@import"https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@500;600;700&family=DM+Sans:wght@400;500;700&family=JetBrains+Mono:wght@400;500&display=swap";.skip-nav{position:absolute;top:-100%;left:0;padding:.75rem 1.5rem;background:var(--primary-color, #f59e0b);color:#fff;font-weight:600;text-decoration:none;z-index:9999;border-radius:0 0 .5rem;transition:top .15s}.skip-nav:focus{top:0}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}:root,[data-theme=light]{--primary-color: #f59e0b;--primary-dark: #d97706;--primary-light: #fef3c7;--primary-gradient: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);--accent-color: #92400e;--accent-light: #fde68a;--accent-dark: #78350f;--bg-color: #fffbf0;--surface-color: #ffffff;--surface-secondary: #fefce8;--surface-hover: #fef9e7;--surface-elevated: #ffffff;--hover-color: #fef9e7;--text-primary: #1c1917;--text-secondary: #57534e;--text-tertiary: #a8a29e;--text-muted: #a8a29e;--text-inverse: #ffffff;--border-color: #e7e5e4;--border-light: #f5f5f4;--border-focus: #f59e0b;--shadow-sm: 0 1px 2px rgba(120, 53, 15, .05);--shadow-md: 0 4px 6px rgba(120, 53, 15, .07);--shadow-lg: 0 10px 25px rgba(120, 53, 15, .1);--shadow-xl: 0 20px 50px rgba(120, 53, 15, .12);--shadow: 0 2px 12px rgba(120, 53, 15, .08);--success-color: #10b981;--success-bg: #ecfdf5;--warning-color: #f59e0b;--warning-bg: #fffbeb;--error-color: #ef4444;--error-bg: #fef2f2;--info-color: #d97706;--info-bg: #fffbeb;--header-bg: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);--header-text: #ffffff;--honey-drip-color: #d97706;--honey-drop-color: #f59e0b;--footer-bg: #292524;--footer-text: #ffffff;--modal-overlay: rgba(0, 0, 0, .5);--modal-bg: #ffffff;--scrollbar-track: transparent;--scrollbar-thumb: #d6d3d1;--scrollbar-thumb-hover: #a8a29e;--input-bg: #ffffff;--input-border: #d6d3d1;--input-focus-border: #f59e0b;--input-focus-shadow: 0 0 0 3px rgba(245, 158, 11, .15);--card-bg: #ffffff;--card-border: #e7e5e4;--card-shadow: 0 2px 8px rgba(120, 53, 15, .08);--card-hover-shadow: 0 8px 25px rgba(120, 53, 15, .14);--bg-atmosphere-1: rgba(245, 158, 11, .16);--bg-atmosphere-2: rgba(217, 119, 6, .08);--font-display: "Plus Jakarta Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;--font-body: "DM Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;--font-mono: "JetBrains Mono", "Cascadia Mono", "Consolas", "Courier New", monospace;--text-xs: .75rem;--text-sm: .875rem;--text-md: 1rem;--text-lg: 1.125rem;--text-xl: 1.5rem;--text-2xl: 2rem;--radius-sm: .5rem;--radius-md: .75rem;--radius-lg: 1rem;--radius-xl: 1.25rem;--space-1: .25rem;--space-2: .5rem;--space-3: .75rem;--space-4: 1rem;--space-5: 1.25rem;--space-6: 1.5rem;--space-8: 2rem;--space-10: 2.5rem;--space-12: 3rem;--motion-fast: .12s;--motion-base: .22s;--motion-normal: .22s;--motion-slow: .34s;--ease-standard: cubic-bezier(.2, 0, 0, 1);--ease-emphasized: cubic-bezier(.2, .8, .2, 1);--ease-smooth: cubic-bezier(.25, .46, .45, .94);--ease-spring: cubic-bezier(.34, 1.56, .64, 1);--focus-ring-color: rgba(245, 158, 11, .32);--focus-ring-offset: 2px;--focus-ring: 0 0 0 3px rgba(245, 158, 11, .32);--space-9: 2.25rem;--space-7: 1.75rem;--space-14: 3.5rem;--space-16: 4rem;--radius-full: 9999px;--radius-2xl: 1.5rem;--text-3xl: 2.5rem;--text-4xl: 3.25rem;--shadow-glass: 0 4px 24px rgba(120, 53, 15, .08), inset 0 1px 0 rgba(255,255,255,.6);--shadow-inset: inset 0 2px 4px rgba(120, 53, 15, .06);--shadow-glow: 0 0 20px rgba(245, 158, 11, .35);--gradient-honey-warm: linear-gradient(135deg, #fef3c7 0%, #fde68a 50%, #f59e0b 100%);--gradient-amber-deep: linear-gradient(135deg, #f59e0b 0%, #b45309 55%, #7c2d12 100%);--gradient-surface: linear-gradient(180deg, rgba(255,255,255,.95) 0%, rgba(255,247,229,.9) 100%);--bg-honeycomb: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='56' height='100'%3E%3Cpath d='M28 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#34d399;--success-bg: rgba(52, 211, 153, .1);--warning-color: #fbbf24;--warning-bg: rgba(251, 191, 36, .1);--error-color: #f87171;--error-bg: rgba(248, 113, 113, .1);--info-color: #fbbf24;--info-bg: rgba(251, 191, 36, .1);--header-bg: linear-gradient(135deg, #92400e 0%, #78350f 100%);--header-text: #fef3c7;--honey-drip-color: #78350f;--honey-drop-color: #92400e;--footer-bg: #0f0c0a;--footer-text: #d6d3d1;--modal-overlay: rgba(0, 0, 0, .7);--modal-bg: #292220;--scrollbar-track: transparent;--scrollbar-thumb: #57534e;--scrollbar-thumb-hover: #78716c;--input-bg: #292220;--input-border: #57534e;--input-focus-border: #fbbf24;--input-focus-shadow: 0 0 0 3px rgba(251, 191, 36, .15);--card-bg: #292220;--card-border: #44403c;--card-shadow: 0 2px 8px rgba(0, 0, 0, .3);--card-hover-shadow: 0 8px 25px rgba(0, 0, 0, .4);--bg-atmosphere-1: rgba(251, 191, 36, .14);--bg-atmosphere-2: rgba(146, 64, 14, .24);--focus-ring-color: rgba(251, 191, 36, .38);--focus-ring: 0 0 0 3px rgba(251, 191, 36, .38);--shadow-glass: 0 4px 24px rgba(0,0,0,.25), inset 0 1px 0 rgba(255,255,255,.06);--shadow-glow: 0 0 20px rgba(251,191,36,.25);--gradient-honey-warm: linear-gradient(135deg, rgba(146,64,14,.4) 0%, rgba(120,53,15,.6) 100%);--gradient-surface: linear-gradient(180deg, rgba(41,34,32,.98) 0%, rgba(35,28,26,.95) 100%)}:root,[data-theme=light]{--amber-50: #fffbeb;--amber-100: #fef3c7;--amber-200: #fde68a;--amber-400: #f59e0b;--amber-600: #d97706;--amber-800: #92400e;--amber-900: #78350f;--accent-sky: #38bdf8;--accent-sky-bg: #e0f2fe;--accent-rose: #fb7185;--accent-rose-bg: #fff1f2;--accent-emerald: #34d399;--accent-emerald-bg: #ecfdf5;--shadow-hex-glow: 0 0 0 4px rgba(245, 158, 11, .18), 0 0 24px rgba(245, 158, 11, .5);--z-base: 1;--z-dropdown: 50;--z-sticky: 100;--z-modal-backdrop: 1000;--z-modal: 1001;--z-toast: 1100;--z-tooltip: 1200;--z-skip-nav: 9999}[data-theme=dark]{--amber-50: rgba(251, 191, 36, .06);--amber-100: rgba(251, 191, 36, .1);--amber-200: rgba(251, 191, 36, .18);--amber-400: #fbbf24;--amber-600: #f59e0b;--amber-800: #fde68a;--amber-900: #fef3c7;--accent-sky: #7dd3fc;--accent-sky-bg: rgba(56, 189, 248, .12);--accent-rose: #fda4af;--accent-rose-bg: rgba(251, 113, 133, .12);--accent-emerald: #6ee7b7;--accent-emerald-bg: rgba(52, 211, 153, .12);--shadow-hex-glow: 0 0 0 4px rgba(251, 191, 36, .25), 0 0 28px rgba(251, 191, 36, .6)}.hex-clip{clip-path:polygon(25% 6.7%,75% 6.7%,100% 50%,75% 93.3%,25% 93.3%,0% 50%);aspect-ratio:1 / .866}.hex-clip--pointy{clip-path:polygon(50% 0%,93.3% 25%,93.3% 75%,50% 100%,6.7% 75%,6.7% 25%);aspect-ratio:.866 / 1}@keyframes hex-fill{0%{width:var(--from, 0%)}to{width:var(--to, 100%)}}.progress-bar--honeycomb{position:relative;height:12px;background:var(--amber-50);border-radius:var(--radius-full);overflow:hidden}.progress-bar--honeycomb .progress-bar__fill{background:var(--bg-honeycomb),linear-gradient(90deg,var(--amber-400) 0%,var(--amber-600) 100%);background-size:14px 25px,auto;animation:hex-fill .6s var(--ease-emphasized) forwards;height:100%}@keyframes pulse-emerald{0%,to{transform:scale(1);box-shadow:0 0 #34d39999}50%{transform:scale(1.05);box-shadow:0 0 0 12px #34d39900}}@keyframes shake-rose{0%,to{transform:translate(0)}20%,60%{transform:translate(-6px)}40%,80%{transform:translate(6px)}}.feedback-correct{animation:pulse-emerald .4s var(--ease-spring)}.feedback-wrong{animation:shake-rose .3s var(--ease-standard)}html{min-height:100%;font-size:16px;overflow-x:hidden;scrollbar-gutter:stable}body{min-height:100vh;overflow-x:hidden;max-width:100vw;position:relative;font-family:var(--font-body);line-height:1.5;letter-spacing:.01em;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:radial-gradient(1200px 560px at -6% -8%,var(--bg-atmosphere-1),transparent 68%),radial-gradient(900px 460px at 104% 0%,var(--bg-atmosphere-2),transparent 72%),var(--bg-color);color:var(--text-primary);transition:background-color var(--motion-slow) var(--ease-standard),color var(--motion-base) var(--ease-standard)}body *,body *:before,body *:after{transition-property:background-color,border-color,color,box-shadow;transition-duration:var(--motion-fast);transition-timing-function:var(--ease-standard)}.btn,.card,.modal-content,.side-menu,[class*=hover],input,textarea,select{transition:all var(--motion-base) var(--ease-standard)}h1,h2,h3,h4,h5,h6{font-family:var(--font-display);line-height:1.2;letter-spacing:-.02em;font-weight:600}p,li,label,input,textarea,select,button{font-size:var(--text-md)}a{color:inherit}:focus-visible{outline:0;box-shadow:0 0 0 3px var(--focus-ring-color);border-radius:var(--radius-sm)}:where(button,a,input,select,textarea,[role=button]){min-height:2.5rem}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--scrollbar-track)}::-webkit-scrollbar-thumb{background:var(--scrollbar-thumb);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--scrollbar-thumb-hover)}::selection{background:var(--primary-color);color:#fff}.bl-shell{width:min(1200px,calc(100% - var(--space-8)));margin-inline:auto}.bl-stack{display:flex;flex-direction:column;gap:var(--space-4)}.bl-cluster{display:flex;flex-wrap:wrap;gap:var(--space-3);align-items:center}.bl-grid{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:var(--space-4)}.bl-card{background:var(--card-bg);border:1px solid var(--card-border);border-radius:var(--radius-lg);box-shadow:var(--card-shadow)}@media(prefers-reduced-motion:reduce){html:focus-within{scroll-behavior:auto}*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}button,a,[role=button]{touch-action:manipulation}input,select,textarea{font-size:max(16px,1em)}img,video,iframe{max-width:100%}pre,code{max-width:100%;overflow-x:auto}body:has(.modal-overlay,.lesson-modal-overlay,.session-invite-overlay,.image-picker-overlay,.student-groups-overlay,.student-management-overlay,.student-onboarding-overlay,.auth-overlay,.overlay-backdrop,.bl-tooltip,.bl-dropdown,[data-overlay-open=true]){overflow:hidden;overscroll-behavior:none}.modal-overlay,.lesson-modal-overlay,.session-invite-overlay,.image-picker-overlay,.student-groups-overlay,.student-management-overlay,.student-onboarding-overlay,.auth-overlay,.overlay-backdrop{overscroll-behavior:contain;max-width:100vw;max-width:100dvw}.modal-content,.lesson-modal{max-width:min(100%,calc(100vw - 32px));max-width:min(100%,calc(100dvw - 32px))}[data-theme=dark] .calendar-container{background:var(--surface-color);box-shadow:var(--shadow)}[data-theme=dark] .calendar-nav h2{color:var(--text-primary)}[data-theme=dark] .nav-btn{background:var(--hover-color);color:var(--text-secondary)}[data-theme=dark] .nav-btn:hover{background:var(--border-color);color:var(--text-primary)}[data-theme=dark] .view-switcher{background:var(--hover-color)}[data-theme=dark] .view-switcher button{color:var(--text-secondary)}[data-theme=dark] .view-switcher button.active{background:var(--surface-color);color:var(--primary-color);box-shadow:var(--shadow)}[data-theme=dark] .calendar-grid{border-color:var(--border-color)}[data-theme=dark] .calendar-day-names{background:var(--hover-color);border-bottom-color:var(--border-color)}[data-theme=dark] .day-name{color:var(--text-secondary)}[data-theme=dark] .calendar-day{border-right-color:var(--border-color);border-bottom-color:var(--border-color)}[data-theme=dark] .calendar-day:hover{background:var(--hover-color)}[data-theme=dark] .calendar-day.empty{background:#ffffff05}[data-theme=dark] .calendar-day.today{background:#f59e0b1a}[data-theme=dark] .calendar-day.selected{background:#f59e0b26;box-shadow:inset 0 0 0 2px var(--primary-color)}[data-theme=dark] .day-number{color:var(--text-primary)}[data-theme=dark] .create-lesson-modal,[data-theme=dark] .lesson-detail-modal{background:var(--surface-color)}[data-theme=dark] .create-lesson-modal h3,[data-theme=dark] .lesson-detail-modal h3{color:var(--text-primary)}[data-theme=dark] .create-lesson-modal label,[data-theme=dark] .lesson-detail-modal label{color:var(--text-secondary)}[data-theme=dark] .create-lesson-modal input,[data-theme=dark] .create-lesson-modal select,[data-theme=dark] .create-lesson-modal textarea{background:var(--input-bg);border-color:var(--input-border);color:var(--text-primary)}[data-theme=dark] .create-lesson-modal input:focus,[data-theme=dark] .create-lesson-modal select:focus,[data-theme=dark] .create-lesson-modal textarea:focus{border-color:var(--primary-color);box-shadow:0 0 0 3px #f59e0b33}[data-theme=dark] .lesson-type-option{background:var(--hover-color);border-color:var(--border-color);color:var(--text-primary)}[data-theme=dark] .lesson-type-option:hover{border-color:var(--primary-color)}[data-theme=dark] .chat-container{background:var(--surface-color);box-shadow:var(--shadow)}[data-theme=dark] .chat-rooms{border-right-color:var(--border-color)}[data-theme=dark] .rooms-header{border-bottom-color:var(--border-color)}[data-theme=dark] .rooms-header h3{color:var(--text-primary)}[data-theme=dark] .rooms-loading,[data-theme=dark] .rooms-empty,[data-theme=dark] .placeholder-content{color:var(--text-muted)}[data-theme=dark] .placeholder-content h3{color:var(--text-secondary)}[data-theme=dark] .room-item{border-bottom-color:var(--border-color)}[data-theme=dark] .room-item:hover{background:var(--hover-color)}[data-theme=dark] .room-item.active{background:#f59e0b26}[data-theme=dark] .room-info h4{color:var(--text-primary)}[data-theme=dark] .last-message{color:var(--text-secondary)}[data-theme=dark] .room-time{color:var(--text-muted)}[data-theme=dark] .chat-header{border-bottom-color:var(--border-color);background:var(--hover-color)}[data-theme=dark] .chat-header-info h3{color:var(--text-primary)}[data-theme=dark] .chat-lesson{color:var(--primary-color)}[data-theme=dark] .message-content{background:var(--hover-color);color:var(--text-primary)}[data-theme=dark] .message.own .message-content{background:var(--primary-color);color:#fff}[data-theme=dark] .message-time{color:var(--text-muted)}[data-theme=dark] .chat-input{border-top-color:var(--border-color);background:var(--surface-color)}[data-theme=dark] .chat-input input{background:var(--input-bg);border-color:var(--input-border);color:var(--text-primary)}[data-theme=dark] .chat-input input::placeholder{color:var(--text-muted)}[data-theme=dark] .homework-container{color:var(--text-primary)}[data-theme=dark] .homework-card,[data-theme=dark] .hw-detail-card,[data-theme=dark] .create-homework-modal{background:var(--surface-color);box-shadow:var(--shadow)}[data-theme=dark] .homework-card h3,[data-theme=dark] .hw-detail-card h3,[data-theme=dark] .create-homework-modal h3{color:var(--text-primary)}[data-theme=dark] .homework-card p,[data-theme=dark] .hw-meta,[data-theme=dark] .hw-detail-card p{color:var(--text-secondary)}[data-theme=dark] .hw-tab-btn{color:var(--text-secondary);border-bottom-color:transparent}[data-theme=dark] .hw-tab-btn:hover{color:var(--text-primary);background:var(--hover-color)}[data-theme=dark] .hw-tab-btn.active{color:var(--primary-color);border-bottom-color:var(--primary-color)}[data-theme=dark] .hw-tabs{border-bottom-color:var(--border-color)}[data-theme=dark] .create-homework-modal label{color:var(--text-secondary)}[data-theme=dark] .create-homework-modal input,[data-theme=dark] .create-homework-modal select,[data-theme=dark] .create-homework-modal textarea{background:var(--input-bg);border-color:var(--input-border);color:var(--text-primary)}[data-theme=dark] .teacher-feedback,[data-theme=dark] .my-submission{background:var(--hover-color)}[data-theme=dark] .teacher-feedback h4,[data-theme=dark] .my-submission h4,[data-theme=dark] .student-submission h4,[data-theme=dark] .check-section h4{color:var(--text-primary)}[data-theme=dark] .teacher-feedback p,[data-theme=dark] .my-submission p{color:var(--text-secondary)}[data-theme=dark] .submission-box{background:#fbbf241a;border-color:#fbbf244d;color:var(--text-primary)}[data-theme=dark] .lesson-creator{background:var(--surface-color);box-shadow:var(--shadow)}[data-theme=dark] .lesson-creator-header{border-bottom-color:var(--border-color)}[data-theme=dark] .lesson-creator-header h2{color:var(--text-primary)}[data-theme=dark] .lesson-creator-tabs{background:var(--hover-color)}[data-theme=dark] .lesson-creator-tabs .tab{color:var(--text-secondary)}[data-theme=dark] .lesson-creator-tabs .tab:hover{background:var(--border-color)}[data-theme=dark] .lesson-creator-tabs .tab.active{background:var(--primary-color);color:#fff}[data-theme=dark] .lesson-creator .form-group label{color:var(--text-secondary)}[data-theme=dark] .lesson-creator .form-group input,[data-theme=dark] .lesson-creator .form-group textarea,[data-theme=dark] .lesson-creator .form-group select{background:var(--input-bg);border-color:var(--input-border);color:var(--text-primary)}[data-theme=dark] .lesson-creator .form-group input:focus,[data-theme=dark] .lesson-creator .form-group textarea:focus,[data-theme=dark] .lesson-creator .form-group select:focus{border-color:var(--primary-color);box-shadow:0 0 0 3px #f59e0b33}[data-theme=dark] .exercise-palette{background:linear-gradient(135deg,#f59e0b1a,#d977061a)}[data-theme=dark] .exercise-palette h4{color:var(--primary-color)}[data-theme=dark] .template-item{background:var(--surface-color)}[data-theme=dark] .template-item:hover{border-color:var(--primary-color);box-shadow:0 4px 12px #f59e0b33}[data-theme=dark] .template-name{color:var(--text-primary)}[data-theme=dark] .exercises-list{background:var(--bg-color)}[data-theme=dark] .exercises-list h4{color:var(--text-primary)}[data-theme=dark] .empty-exercises{border-color:var(--border-color);color:var(--text-muted)}[data-theme=dark] .exercise-card{background:var(--surface-color);border-color:var(--border-color)}[data-theme=dark] .exercise-card h4{color:var(--text-primary)}[data-theme=dark] .sentence-ordering-editor .order-buttons button{background:var(--surface-color);border-color:var(--border-color);color:var(--text-primary)}[data-theme=dark] .lesson-viewer{background:var(--surface-color);box-shadow:var(--shadow)}[data-theme=dark] .lesson-viewer h1,[data-theme=dark] .lesson-viewer h2,[data-theme=dark] .lesson-viewer h3{color:var(--text-primary)}[data-theme=dark] .lesson-viewer p,[data-theme=dark] .lesson-viewer .lesson-meta{color:var(--text-secondary)}[data-theme=dark] .exercise-card-viewer{background:var(--bg-color);border-color:var(--border-color)}[data-theme=dark] .exercise-card-viewer h3{color:var(--text-primary)}[data-theme=dark] .exercise-option{background:var(--surface-color);border-color:var(--border-color);color:var(--text-primary)}[data-theme=dark] .exercise-option:hover{border-color:var(--primary-color);background:#f59e0b1a}[data-theme=dark] .exercise-input,[data-theme=dark] .exercise-textarea{background:var(--input-bg);border-color:var(--input-border);color:var(--text-primary)}[data-theme=dark] .unsupported-type,[data-theme=dark] .media-error{background:#ef44441a;color:#fca5a5}[data-theme=dark] .live-lesson-container{background:var(--bg-color)}[data-theme=dark] .live-lesson-panel,[data-theme=dark] .teacher-sidebar,[data-theme=dark] .student-panel{background:var(--surface-color);box-shadow:var(--shadow)}[data-theme=dark] .live-lesson-panel h2,[data-theme=dark] .live-lesson-panel h3,[data-theme=dark] .teacher-sidebar h3,[data-theme=dark] .student-panel h3,[data-theme=dark] .exercise-meta .exercise-title{color:var(--text-primary)}[data-theme=dark] .exercise-type-badge{background:var(--hover-color);color:var(--text-secondary)}[data-theme=dark] .student-card{background:var(--hover-color);border-color:var(--border-color)}[data-theme=dark] .student-card .student-name{color:var(--text-primary)}[data-theme=dark] .student-answer-row{background:var(--bg-color);border-color:var(--border-color)}[data-theme=dark] .account-settings{background:var(--surface-color);box-shadow:var(--shadow)}[data-theme=dark] .settings-nav button{color:var(--text-secondary);border-left-color:transparent}[data-theme=dark] .settings-nav button:hover{background:var(--hover-color);color:var(--text-primary)}[data-theme=dark] .settings-nav button.active{color:var(--primary-color);border-left-color:var(--primary-color);background:#f59e0b1a}[data-theme=dark] 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.info-label{color:var(--text-secondary)}[data-theme=dark] .admin-panel{color:var(--text-primary)}[data-theme=dark] .admin-tabs button{color:var(--text-secondary)}[data-theme=dark] .admin-tabs button:hover{color:var(--text-primary);background:var(--hover-color)}[data-theme=dark] .admin-tabs button.active{color:var(--primary-color);border-bottom-color:var(--primary-color)}[data-theme=dark] .stat-card{background:var(--surface-color);box-shadow:var(--shadow)}[data-theme=dark] .stat-card h3{color:var(--text-secondary)}[data-theme=dark] .stat-value{color:var(--text-primary)}[data-theme=dark] .users-table,[data-theme=dark] .lessons-table,[data-theme=dark] .pricing-table,[data-theme=dark] .trial-links-table{background:var(--surface-color);box-shadow:var(--shadow)}[data-theme=dark] .users-table th,[data-theme=dark] .lessons-table th,[data-theme=dark] .pricing-table th,[data-theme=dark] .trial-links-table th{background:var(--hover-color);color:var(--text-secondary);border-bottom-color:var(--border-color)}[data-theme=dark] .users-table td,[data-theme=dark] .lessons-table td,[data-theme=dark] .pricing-table td,[data-theme=dark] .trial-links-table td{color:var(--text-primary);border-bottom-color:var(--border-color)}[data-theme=dark] .users-table tr:hover,[data-theme=dark] .lessons-table tr:hover{background:var(--hover-color)}[data-theme=dark] .admin-section-card{background:var(--surface-color);box-shadow:var(--shadow)}[data-theme=dark] .admin-section-card h3{color:var(--text-primary)}[data-theme=dark] .admin-section-card input,[data-theme=dark] .admin-section-card select,[data-theme=dark] .admin-section-card textarea{background:var(--input-bg);border-color:var(--input-border);color:var(--text-primary)}[data-theme=dark] .landing-page{background:var(--bg-color)}[data-theme=dark] .hero{background:linear-gradient(135deg,#1a1040,#0f172a,#1e1b4b)}[data-theme=dark] .hero-content h1{color:var(--text-primary)}[data-theme=dark] .hero-subtitle{color:var(--text-secondary)}[data-theme=dark] .btn-secondary{background:var(--surface-color);color:var(--primary-color);border-color:var(--primary-color)}[data-theme=dark] .btn-secondary:hover{background:var(--primary-color);color:#fff}[data-theme=dark] .features{background:var(--surface-color)}[data-theme=dark] .features h2{color:var(--text-primary)}[data-theme=dark] .feature-card{background:var(--bg-color);border:1px solid var(--border-color)}[data-theme=dark] .feature-card:hover{box-shadow:0 10px 30px #0000004d;border-color:var(--primary-color)}[data-theme=dark] .feature-card h3{color:var(--text-primary)}[data-theme=dark] .feature-card p{color:var(--text-secondary)}[data-theme=dark] .pricing{background:var(--bg-color)}[data-theme=dark] .pricing h2{color:var(--text-primary)}[data-theme=dark] .pricing-card{background:var(--surface-color);border:1px solid var(--border-color);color:var(--text-primary)}[data-theme=dark] .pricing-card:hover{box-shadow:0 15px 40px #0000004d;border-color:var(--primary-color)}[data-theme=dark] .pricing-card.popular{border-color:var(--primary-color)}[data-theme=dark] .pricing-card h3{color:var(--text-primary)}[data-theme=dark] .pricing-card .price .amount{color:var(--primary-color)}[data-theme=dark] .pricing-card .price .currency,[data-theme=dark] .pricing-card .duration,[data-theme=dark] .pricing-card .plan-description{color:var(--text-secondary)}[data-theme=dark] .pricing-card li,[data-theme=dark] .features-list li{color:var(--text-secondary);border-bottom-color:var(--border-color)}[data-theme=dark] .email-modal{background:var(--surface-color)}[data-theme=dark] .email-modal h3{color:var(--text-primary)}[data-theme=dark] .email-modal p{color:var(--text-secondary)}[data-theme=dark] .email-modal .hint{color:var(--text-tertiary)}[data-theme=dark] .email-modal .error-msg{background:var(--error-bg);color:var(--error-color)}[data-theme=dark] .email-modal input{background:var(--input-bg);border-color:var(--input-border);color:var(--text-primary)}[data-theme=dark] .email-modal input:focus{border-color:var(--primary-color)}[data-theme=dark] .register-hint{color:var(--text-secondary)}[data-theme=dark] .register-hint button{color:var(--primary-color)}[data-theme=dark] .cta{background:linear-gradient(135deg,#f59e0b,#d97706)}[data-theme=dark] .cta h2{color:#fff}[data-theme=dark] .cta p{color:#ffffffd9}[data-theme=dark] .no-plans,[data-theme=dark] .loading{color:var(--text-secondary)}[data-theme=dark] .hero-trigger{color:#ffffffb3}[data-theme=dark] .hero-stats{background:#ffffff0d;border-color:#ffffff1a}[data-theme=dark] .stat-number{color:var(--primary-color)}[data-theme=dark] .stat-label{color:#ffffffb3}[data-theme=dark] .landing-page .btn-secondary{background:var(--surface-color);border-color:var(--primary-color);color:var(--primary-color)}[data-theme=dark] .landing-page .btn-secondary:hover{background:var(--primary-color);color:#1a1412}[data-theme=dark] .hero-stat-number{color:var(--primary-color)}[data-theme=dark] .hero-stat-label{color:var(--text-secondary)}[data-theme=dark] .trust-icon{color:var(--primary-color)}[data-theme=dark] .how-it-works{background:var(--surface-color)}[data-theme=dark] .how-it-works h2{color:var(--text-primary)}[data-theme=dark] .how-it-works .section-subtitle{color:var(--text-secondary)}[data-theme=dark] .step-card{background:var(--bg-color);border:1px solid var(--border-color)}[data-theme=dark] .step-card h3{color:var(--text-primary)}[data-theme=dark] .step-card p{color:var(--text-secondary)}[data-theme=dark] .step-connector{background:var(--border-color)}[data-theme=dark] .social-proof{background:var(--bg-color)}[data-theme=dark] .trust-badge{background:var(--surface-color);border-color:var(--border-color);color:var(--text-secondary)}[data-theme=dark] .testimonial-card{background:var(--surface-color);border-color:var(--border-color)}[data-theme=dark] .testimonial-card:hover{border-color:var(--primary-color)}[data-theme=dark] .testimonial-text{color:var(--text-secondary)}[data-theme=dark] .testimonial-name{color:var(--text-primary)}[data-theme=dark] .testimonial-subject{color:var(--text-muted)}[data-theme=dark] .pricing-guarantee{color:var(--text-secondary)}[data-theme=dark] .faq-preview{background:var(--surface-color)}[data-theme=dark] .faq-preview h2{color:var(--text-primary)}[data-theme=dark] .faq-item{border-color:var(--border-color)}[data-theme=dark] .faq-question{color:var(--text-primary)}[data-theme=dark] .faq-question:hover{color:var(--primary-color)}[data-theme=dark] .faq-answer{color:var(--text-secondary)}[data-theme=dark] .faq-chevron{color:var(--text-muted)}[data-theme=dark] .trial-cta{background:var(--bg-color)}[data-theme=dark] .trial-cta-content{background:var(--surface-color);border-color:var(--border-color)}[data-theme=dark] .trial-cta-content h2{color:var(--text-primary)}[data-theme=dark] .trial-cta-content p{color:var(--text-secondary)}[data-theme=dark] .cta-trigger{color:#ffffffb3}[data-theme=dark] .features .section-subtitle{color:var(--text-secondary)}[data-theme=dark] .pricing-page,[data-theme=dark] .pricing-header h1{color:var(--text-primary)}[data-theme=dark] .pricing-header p{color:var(--text-secondary)}[data-theme=dark] .pricing-card-page{background:var(--surface-color);border-color:var(--border-color);box-shadow:var(--shadow)}[data-theme=dark] .pricing-card-page h3{color:var(--text-primary)}[data-theme=dark] .card-features li{color:var(--text-secondary)}[data-theme=dark] .notifications-panel{background:var(--surface-color);border-color:var(--border-color);box-shadow:var(--shadow-lg)}[data-theme=dark] .notifications-header{border-bottom-color:var(--border-color)}[data-theme=dark] .notifications-header h3{color:var(--text-primary)}[data-theme=dark] .notification-item{border-bottom-color:var(--border-color)}[data-theme=dark] .notification-item:hover{background:var(--hover-color)}[data-theme=dark] .notification-item h4{color:var(--text-primary)}[data-theme=dark] .notification-item p{color:var(--text-secondary)}[data-theme=dark] .notification-time,[data-theme=dark] .no-notifications{color:var(--text-muted)}[data-theme=dark] .notification-toast{background:var(--surface-color);border-color:var(--border-color);box-shadow:var(--shadow-lg)}[data-theme=dark] .toast-content h4{color:var(--text-primary)}[data-theme=dark] .toast-content p{color:var(--text-secondary)}[data-theme=dark] .remote-session-manager{background:var(--surface-color);box-shadow:var(--shadow)}[data-theme=dark] .remote-session-manager h2,[data-theme=dark] .remote-session-manager h3{color:var(--text-primary)}[data-theme=dark] .remote-session-manager p{color:var(--text-secondary)}[data-theme=dark] 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.invite-modal{background:var(--surface-color);box-shadow:var(--shadow-lg)}[data-theme=dark] .invite-content h2{color:var(--text-primary)}[data-theme=dark] .invite-content p{color:var(--text-secondary)}[data-theme=dark] .invite-details{background:var(--bg-color)}[data-theme=dark] .invite-details span{color:var(--text-secondary)}[data-theme=dark] .invite-details strong{color:var(--text-primary)}[data-theme=dark] .groups-modal{background:var(--surface-color)}[data-theme=dark] .groups-modal h2{color:var(--text-primary)}[data-theme=dark] .groups-list{border-right-color:var(--border-color)}[data-theme=dark] .group-list-item{border-bottom-color:var(--border-color);color:var(--text-primary)}[data-theme=dark] .group-list-item:hover{background:var(--hover-color)}[data-theme=dark] .group-list-item.active{background:#f59e0b26}[data-theme=dark] .group-detail h3{color:var(--text-primary)}[data-theme=dark] .member-item{background:var(--hover-color)}[data-theme=dark] .member-name{color:var(--text-primary)}[data-theme=dark] .member-email{color:var(--text-secondary)}[data-theme=dark] .groups-modal input{background:var(--input-bg);border-color:var(--input-border);color:var(--text-primary)}[data-theme=dark] .student-management{background:var(--surface-color);box-shadow:var(--shadow)}[data-theme=dark] .students-sidebar{border-right-color:var(--border-color)}[data-theme=dark] .student-list-item{border-bottom-color:var(--border-color)}[data-theme=dark] .student-list-item:hover{background:var(--hover-color)}[data-theme=dark] .student-list-item.active{background:#f59e0b26}[data-theme=dark] .student-list-item h4{color:var(--text-primary)}[data-theme=dark] .student-list-item p{color:var(--text-secondary)}[data-theme=dark] .student-detail h2,[data-theme=dark] .student-detail h3{color:var(--text-primary)}[data-theme=dark] .student-detail p{color:var(--text-secondary)}[data-theme=dark] .student-detail input,[data-theme=dark] .student-detail textarea{background:var(--input-bg);border-color:var(--input-border);color:var(--text-primary)}[data-theme=dark] .notes-view p{color:var(--text-secondary)}[data-theme=dark] .notes-view button{color:var(--primary-color)}[data-theme=dark] .remove-btn{background:#ef44441a;border-color:#ef44444d;color:#fca5a5}[data-theme=dark] .remove-btn:hover{background:#ef444433;border-color:#f87171}[data-theme=dark] .study-materials{background:var(--surface-color);color:var(--text-primary)}[data-theme=dark] .study-materials-card,[data-theme=dark] .flashcard-set,[data-theme=dark] .word-card{background:var(--surface-color);box-shadow:var(--shadow)}[data-theme=dark] .study-materials h2,[data-theme=dark] .study-materials h3{color:var(--text-primary)}[data-theme=dark] .study-materials p{color:var(--text-secondary)}[data-theme=dark] .study-materials input,[data-theme=dark] .study-materials textarea,[data-theme=dark] .study-materials select{background:var(--input-bg);border-color:var(--input-border);color:var(--text-primary)}[data-theme=dark] .study-materials input:focus,[data-theme=dark] .study-materials textarea:focus,[data-theme=dark] .study-materials select:focus{border-color:var(--primary-color);box-shadow:0 0 0 3px #f59e0b33}[data-theme=dark] .material-card{background:var(--bg-color);border-color:var(--border-color)}[data-theme=dark] .material-card:hover{border-color:var(--primary-color);box-shadow:0 4px 12px #f59e0b33}[data-theme=dark] .material-front{color:var(--text-primary)}[data-theme=dark] .material-back{color:var(--text-secondary)}[data-theme=dark] .material-notes{color:var(--text-muted)}[data-theme=dark] .material-category{background:#f59e0b26;color:var(--primary-color)}[data-theme=dark] .material-actions button{background:var(--hover-color);color:var(--text-primary)}[data-theme=dark] .material-actions button:hover{background:var(--border-color)}[data-theme=dark] .material-stats{color:var(--text-muted)}[data-theme=dark] .stat-card{background:var(--bg-color)}[data-theme=dark] .add-form{background:var(--bg-color);border:1px solid var(--border-color)}[data-theme=dark] .tabs{border-bottom-color:var(--border-color)}[data-theme=dark] .tab{color:var(--text-secondary)}[data-theme=dark] .tab:hover{background:var(--hover-color);color:var(--text-primary)}[data-theme=dark] .tab.active{background:var(--primary-color);color:#fff}[data-theme=dark] .search-input{background:var(--input-bg);border-color:var(--input-border);color:var(--text-primary)}[data-theme=dark] .search-input:focus{border-color:var(--primary-color)}[data-theme=dark] .category-select{background:var(--input-bg);border-color:var(--input-border);color:var(--text-primary)}[data-theme=dark] .btn-close{background:var(--hover-color);color:var(--text-primary)}[data-theme=dark] .btn-close:hover{background:var(--border-color)}[data-theme=dark] 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input{background:var(--input-bg);border-color:var(--input-border);color:var(--text-primary)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:var(--font-body);color:var(--text-primary);background:var(--bg-color)}.app{min-height:100vh;display:flex;flex-direction:column}.header{background:var(--header-bg, linear-gradient(135deg, #f59e0b 0%, #d97706 100%));color:var(--header-text, white);padding:.75rem 0;box-shadow:0 2px 8px #78350f26,0 1px 3px #78350f1a;position:sticky;top:0;z-index:100}.header .header-container:before{content:"";position:absolute;top:0;left:-100%;width:60%;height:100%;background:linear-gradient(90deg,transparent 0%,rgba(255,255,255,.04) 30%,rgba(255,255,255,.08) 50%,rgba(255,255,255,.04) 70%,transparent 100%);animation:honeySheen 10s ease-in-out infinite;pointer-events:none}@keyframes honeySheen{0%{left:-100%}to{left:200%}}.header .container{display:flex;justify-content:space-between;align-items:center}.header-container{display:flex;align-items:center;justify-content:space-between;gap:1rem;position:relative}.header-left{display:flex;align-items:center;gap:.75rem}.logo{width:44px;height:44px;background:#fff3;border-radius:10px;display:flex;align-items:center;justify-content:center;transition:transform .3s ease;position:relative}.logo:hover{transform:scale(1.1) rotate(-5deg);background:#ffffff4d}.logo-icon{font-size:1.5rem;animation:beeFloat 3s ease-in-out infinite}@keyframes beeFloat{0%,to{transform:translateY(0) rotate(0)}25%{transform:translateY(-2px) rotate(3deg)}50%{transform:translateY(1px) rotate(-2deg)}75%{transform:translateY(-1px) rotate(1deg)}}.header h1{font-size:1.25rem;font-weight:700;margin:0;text-shadow:0 1px 3px rgba(120,53,15,.2)}.header-right{display:flex;align-items:center;gap:.5rem}.header nav{display:flex;gap:1rem}[data-theme=dark] .header{box-shadow:0 2px 8px #0000004d,0 1px 3px #0003}@media(max-width:600px){.header-container{padding:0 .5rem}.header h1{display:none}.header-left{gap:0}.logo{width:40px;height:40px}.logo-icon{font-size:1.4rem}.header-right{gap:.25rem}}.container{width:min(100% - 2rem,1400px);margin:0 auto;padding:0}.main-content:has(.landing-page){padding:0}.ticket-balance-badge{display:flex;align-items:center;gap:6px;color:#fff;padding:6px 14px;border-radius:20px;cursor:pointer;font-weight:600;font-size:.9rem;transition:transform .2s,box-shadow .2s;box-shadow:0 2px 8px #00000026;white-space:nowrap}.ticket-balance-badge.has-tickets{background:linear-gradient(135deg,#10b981,#059669)}.ticket-balance-badge.no-tickets{background:linear-gradient(135deg,#ef4444,#dc2626)}.ticket-balance-badge:hover{transform:scale(1.05);box-shadow:0 4px 12px #0003}.ticket-expiry-tag{display:inline-flex;align-items:center;gap:2px;padding:1px 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var(--border-color);background:var(--surface-secondary);border-radius:0 0 16px 16px}.section-header h3{margin:0;font-size:1.25rem;color:var(--text-primary)}.header-actions{display:flex;gap:10px}.chapter-modal-large{max-width:680px!important;width:95%!important}.form-row{display:flex;gap:16px;margin-bottom:0}.form-group-half{flex:1;min-width:0}.color-input-row{display:flex;gap:8px;align-items:center}.color-picker{width:48px!important;height:40px!important;padding:2px!important;border-radius:8px!important;cursor:pointer;flex-shrink:0}.color-text{flex:1}.modal-body select{width:100%;padding:12px 16px;border:1px solid var(--input-border);border-radius:8px;font-size:1rem;background:var(--input-bg);color:var(--text-primary);transition:border-color .2s,box-shadow .2s;appearance:auto}.modal-body select:focus{outline:none;border-color:var(--input-focus-border);box-shadow:var(--input-focus-shadow)}.btn-advanced-toggle{background:none;border:1px dashed var(--border-color);border-radius:8px;padding:10px 16px;width:100%;text-align:center;cursor:pointer;color:var(--text-secondary);font-size:.9rem;margin-top:8px;transition:all .2s}.btn-advanced-toggle:hover{border-color:var(--accent-color);color:var(--accent-color);background:var(--surface-hover)}.advanced-settings{margin-top:16px;padding-top:16px;border-top:1px solid var(--border-color)}.banner-preview{margin-top:8px;border-radius:8px;overflow:hidden;max-height:120px}.banner-preview img{width:100%;height:120px;object-fit:cover;border-radius:8px}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible,[role=button]:focus-visible,[tabindex="0"]:focus-visible{outline:none;box-shadow:0 0 0 3px var(--focus-ring-color, rgba(245,158,11,.32));border-radius:var(--radius-sm)}.btn-honey{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;min-height:44px;padding:.72rem 1.5rem;border:1px solid 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.2s}.today-btn:hover{background:#d97706}.view-switcher{display:flex;background:#f0f2f5;border-radius:8px;padding:4px}.view-switcher button{background:transparent;border:none;padding:6px 12px;border-radius:6px;cursor:pointer;color:#666;font-size:14px;transition:all .2s}.view-switcher button.active{background:#fff;color:#f59e0b;box-shadow:0 1px 3px #0000001a}.add-lesson-btn{background:#00b894;color:#fff;border:none;padding:8px 16px;border-radius:8px;cursor:pointer;font-weight:500;transition:background .2s}.add-lesson-btn:hover{background:#00a383}.calendar-grid{border:1px solid #e0e3e8;border-radius:12px;overflow:hidden}.calendar-day-names{display:grid;grid-template-columns:repeat(7,1fr);background:#f8f9fa;border-bottom:1px solid #e0e3e8}.day-name{padding:12px;text-align:center;font-weight:600;color:#666;font-size:14px}.calendar-days{display:grid;grid-template-columns:repeat(7,1fr)}.calendar-day{min-height:100px;border-right:1px solid #e0e3e8;border-bottom:1px solid #e0e3e8;padding:8px;cursor:pointer;transition:background .2s}.calendar-day:nth-child(7n){border-right:none}.calendar-day:hover{background:#f8f9fa}.calendar-day.empty{background:#fafafa;cursor:default}.calendar-day.today{background:#e8f4fd}.calendar-day.today .day-number{background:#f59e0b;color:#fff;border-radius:50%;width:28px;height:28px;display:flex;align-items:center;justify-content:center}.calendar-day.selected{background:#fef3c7;box-shadow:inset 0 0 0 2px #f59e0b}.day-number{font-weight:600;color:#333;margin-bottom:4px;display:inline-block}.day-lessons{display:flex;flex-direction:column;gap:2px}.lesson-pill{padding:2px 6px;border-radius:4px;font-size:11px;cursor:pointer;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;display:flex;align-items:center;gap:4px;transition:transform 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p{margin:0;color:#666;font-size:14px}.upcoming-person{color:#f59e0b!important;font-weight:500}.no-upcoming{color:#999;text-align:center;padding:20px}.calendar-loading{text-align:center;padding:60px;color:#666}.create-lesson-modal-overlay{position:fixed;inset:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:1000;padding:20px}.create-lesson-modal{background:#fff;border-radius:16px;width:100%;max-width:550px;max-height:90vh;overflow-y:auto;box-shadow:0 20px 60px #0000004d}.create-lesson-modal .modal-header{display:flex;justify-content:space-between;align-items:center;padding:20px 24px;border-bottom:1px solid #e0e3e8;position:sticky;top:0;background:#fff;z-index:1}.create-lesson-modal .modal-header h2{margin:0;font-size:1.3rem;color:#1a1a2e}.create-lesson-modal .close-btn{background:none;border:none;font-size:24px;color:#666;cursor:pointer;padding:4px 8px;border-radius:6px;transition:all .2s}.create-lesson-modal .close-btn:hover{background:#f0f2f5;color:#333}.create-lesson-form{padding:24px;display:flex;flex-direction:column;gap:20px}.create-lesson-form .form-group{display:flex;flex-direction:column;gap:8px}.create-lesson-form label{font-size:.9rem;font-weight:600;color:#333}.create-lesson-form input,.create-lesson-form select,.create-lesson-form textarea{padding:12px 14px;border:1px solid #ddd;border-radius:8px;font-size:1rem;transition:border-color .2s,box-shadow .2s}.create-lesson-form input:focus,.create-lesson-form select:focus,.create-lesson-form textarea:focus{outline:none;border-color:#f59e0b;box-shadow:0 0 0 3px #f59e0b1a}.create-lesson-form textarea{resize:vertical;min-height:80px}.lesson-type-selector{display:flex;gap:12px}.lesson-type-selector .type-btn{flex:1;padding:14px 16px;border:2px solid #e0e3e8;background:#fff;border-radius:10px;cursor:pointer;font-size:.95rem;font-weight:500;transition:all .2s;color:#666}.lesson-type-selector 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.submit-btn{flex:2;padding:14px 20px;background:linear-gradient(135deg,#f59e0b,#d97706);color:#fff;border:none;border-radius:10px;cursor:pointer;font-size:1rem;font-weight:600;transition:all .2s}.modal-actions .submit-btn:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 4px 16px #f59e0b66}.modal-actions .submit-btn:disabled{opacity:.6;cursor:not-allowed}@media(max-width:768px){.calendar-header{flex-direction:column;align-items:stretch}.calendar-nav{justify-content:center}.calendar-actions{justify-content:center;flex-wrap:wrap}.calendar-day{min-height:60px;padding:4px}.lesson-pill{font-size:10px}.lesson-time{display:none}.create-lesson-modal{max-height:80vh}.form-row{grid-template-columns:1fr}.lesson-type-selector{flex-direction:column}}.lesson-detail-modal{max-width:540px}.lesson-detail-body{padding:0}.lesson-detail-body h3{font-size:1.25rem;font-weight:700;margin:0 0 .5rem;color:var(--text-primary)}.detail-time,.detail-person,.detail-subject{font-size:.9rem;color:var(--text-secondary);margin:.25rem 0}.detail-actions{display:flex;flex-wrap:wrap;gap:.5rem;margin:1rem 0}.detail-btn{padding:.45rem 1rem;border-radius:var(--radius-md);font-size:.875rem;font-weight:600;cursor:pointer;border:none;transition:opacity var(--motion-fast),transform var(--motion-fast)}.detail-btn:hover{opacity:.88;transform:translateY(-1px)}.detail-btn.primary{background:var(--primary);color:#fff}.detail-btn.secondary{background:var(--bg-secondary);color:var(--text-primary);border:1px solid var(--border-color)}.detail-btn.danger{background:#ef4444;color:#fff}.detail-btn.small{padding:.3rem .7rem;font-size:.8rem}.reschedule-proposals{border-top:1px solid var(--border-color);padding-top:.75rem;margin-top:.75rem}.reschedule-proposals h4{font-size:.95rem;font-weight:700;margin-bottom:.5rem;color:var(--text-primary)}.proposal-item{background:var(--bg-secondary);border:1px solid 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.2s}.toast-join-btn:hover{background:#00a383}.toast-close{background:transparent;border:none;color:#999;font-size:1.5rem;cursor:pointer;padding:0;line-height:1}.toast-close:hover{color:#666}@media(max-width:480px){.notifications-panel{position:fixed;top:60px;left:10px;right:10px;width:auto}.notification-toast{left:12px;right:12px;width:auto;bottom:12px}}.chat-container{display:flex;height:min(600px,80dvh);background:#fff;border-radius:12px;box-shadow:0 2px 12px #00000014;overflow:hidden}.chat-rooms{width:320px;border-right:1px solid #e0e3e8;display:flex;flex-direction:column}.rooms-header{display:flex;align-items:center;justify-content:space-between;padding:16px;border-bottom:1px solid #e0e3e8}.rooms-header h3{margin:0;font-size:1.1rem;color:#1a1a2e}.connected-indicator{width:10px;height:10px;background:#00b894;border-radius:50%;animation:pulse 2s infinite}@keyframes 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4px;word-break:break-word;line-height:1.4}.message-time{font-size:11px;opacity:.7;display:flex;align-items:center;gap:4px;justify-content:flex-end}.message-status{font-size:12px}.message-status.read{color:#00b894}.message.own .message-status{color:#fffc}.message.own .message-status.read{color:#a8f0dc}.typing-indicator{display:flex;align-items:center;gap:8px;padding:8px 12px;color:#666;font-size:13px;align-self:flex-start}.typing-dots{display:flex;gap:4px}.typing-dots span{width:6px;height:6px;background:#999;border-radius:50%;animation:typingBounce 1.4s infinite}.typing-dots span:nth-child(2){animation-delay:.2s}.typing-dots span:nth-child(3){animation-delay:.4s}@keyframes typingBounce{0%,60%,to{transform:translateY(0)}30%{transform:translateY(-4px)}}.chat-input{display:flex;gap:12px;padding:16px;border-top:1px solid #e0e3e8;background:#fff}.chat-input input{flex:1;padding:12px 16px;border:1px solid #e0e3e8;border-radius:24px;font-size:14px;outline:none;transition:border-color .2s}.chat-input input:focus{border-color:#f59e0b}.chat-input button{padding:12px 24px;background:#f59e0b;color:#fff;border:none;border-radius:24px;font-weight:500;cursor:pointer;transition:background .2s,transform .1s}.chat-input button:hover:not(:disabled){background:#d97706}.chat-input button:active:not(:disabled){transform:scale(.98)}.chat-input button:disabled{background:#ccc;cursor:not-allowed}@media(max-width:768px){.chat-container{flex-direction:column;height:100dvh}.chat-rooms{width:100%;height:clamp(120px,30dvh,220px);border-right:none;border-bottom:1px solid #e0e3e8}.message{max-width:90%}}.chat-container{background:var(--surface-primary);border:1px solid var(--border-subtle);border-radius:var(--radius-xl);font-family:var(--font-primary)}.message-bubble{border-radius:var(--radius-lg);font-size:var(--font-size-base);line-height:var(--line-height-relaxed);max-width:75%;padding:var(--spacing-sm) var(--spacing-md);word-break:break-word}.message-bubble.outgoing{background:var(--gradient-honey-warm);color:var(--color-white);border-bottom-right-radius:var(--radius-xs)}.message-bubble.incoming{background:var(--surface-secondary);border:1px solid var(--border-subtle);color:var(--text-primary);border-bottom-left-radius:var(--radius-xs)}.message-timestamp{color:var(--text-muted);font-size:var(--font-size-xs)}.chat-input-area{background:var(--surface-secondary);border-top:1px solid var(--border-subtle);padding:var(--spacing-sm) var(--spacing-md)}.chat-input{background:var(--surface-primary);border:1.5px solid var(--border-subtle);border-radius:var(--radius-full);color:var(--text-primary);font-family:var(--font-primary);padding:var(--spacing-xs) var(--spacing-md);transition:border-color var(--transition-fast)}.chat-input:focus{border-color:var(--color-honey);box-shadow:0 0 0 2px var(--color-honey-light);outline:none}.chat-send-btn{background:var(--gradient-honey-warm);border-radius:var(--radius-full);color:var(--color-white);transition:opacity var(--transition-fast),transform var(--transition-fast)}.chat-send-btn:hover:not(:disabled){opacity:.9;transform:scale(1.05)}.chat-unread-badge{background:var(--color-honey);border-radius:var(--radius-full);color:var(--color-white);font-size:var(--font-size-xs);font-weight:700;min-width:1.25rem;padding:0 var(--spacing-xs);text-align:center}.chat-online-indicator{background:var(--color-success, #22c55e);border:2px solid var(--surface-primary);border-radius:var(--radius-full);height:.75rem;width:.75rem}.message-sender-avatar{width:28px;height:28px;border-radius:50%;background:linear-gradient(135deg,#f59e0b,#fbbf24);display:flex;align-items:center;justify-content:center;flex-shrink:0;overflow:hidden;margin-right:8px;align-self:flex-end}.message-sender-avatar img{width:100%;height:100%;object-fit:cover}.message-sender-avatar span{color:#fff;font-weight:600;font-size:11px}.message.other{display:flex;flex-direction:row}.message.system{align-self:center;max-width:80%}.system-content{background:transparent!important;box-shadow:none!important;text-align:center;padding:4px 12px!important}.chat-system-text{color:#999;font-size:12px}.chat-gif-message{max-width:250px;max-height:200px;border-radius:8px;display:block;cursor:default}.message.own .chat-gif-message{margin-left:auto}.message-edited-tag{font-size:10px;opacity:.6;margin-left:4px;font-style:italic}.edit-form{display:flex;flex-direction:column;gap:6px;width:100%}.edit-form input{padding:6px 10px;border:1px solid #e0e3e8;border-radius:8px;font-size:14px;outline:none;width:100%;background:#fff;color:#333}.edit-form input:focus{border-color:#f59e0b}.edit-actions{display:flex;gap:6px;justify-content:flex-end}.edit-save{padding:4px 12px;background:#f59e0b;color:#fff;border:none;border-radius:6px;font-size:12px;cursor:pointer}.edit-save:hover{background:#d97706}.edit-cancel{padding:4px 8px;background:transparent;border:1px solid #e0e3e8;border-radius:6px;font-size:12px;cursor:pointer;color:#666}.edit-cancel:hover{background:#f0f0f0}.chat-context-menu{position:fixed;background:#fff;border:1px solid #e0e3e8;border-radius:8px;box-shadow:0 4px 16px #0000001f;z-index:999;min-width:140px;overflow:hidden}.chat-context-menu button{display:block;width:100%;padding:10px 16px;border:none;background:none;text-align:left;cursor:pointer;font-size:13px;color:#333;transition:background .15s}.chat-context-menu button:hover{background:#fef3c7}.chat-context-menu button+button{border-top:1px solid #f0f2f5}.gif-picker{border-top:1px solid #e0e3e8;background:#fff;max-height:300px;display:flex;flex-direction:column}.gif-picker-header{display:flex;gap:8px;padding:8px 12px;border-bottom:1px solid #f0f2f5}.gif-search-input{flex:1;padding:8px 12px;border:1px solid #e0e3e8;border-radius:20px;font-size:13px;outline:none}.gif-search-input:focus{border-color:#f59e0b}.gif-close-btn{width:32px;height:32px;border:none;background:#f0f2f5;border-radius:50%;cursor:pointer;font-size:14px;display:flex;align-items:center;justify-content:center;color:#666;flex-shrink:0}.gif-close-btn:hover{background:#e0e3e8}.gif-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(100px,1fr));gap:4px;padding:8px;overflow-y:auto;flex:1}.gif-item{width:100%;height:80px;object-fit:cover;border-radius:4px;cursor:pointer;transition:transform .15s,box-shadow .15s}.gif-item:hover{transform:scale(1.05);box-shadow:0 2px 8px #00000026}.gif-loading,.gif-empty{padding:24px;text-align:center;color:#999;font-size:13px;grid-column:1 / -1}.gif-attribution{text-align:center;font-size:10px;color:#999;padding:4px 0;border-top:1px solid #f0f2f5}.gif-toggle-btn{padding:8px 12px;background:#f0f2f5;border:1px solid #e0e3e8;border-radius:20px;cursor:pointer;font-size:12px;font-weight:700;color:#8b5cf6;transition:background .2s;flex-shrink:0}.gif-toggle-btn:hover{background:#e0e3e8}[data-theme=dark] .chat-context-menu{background:#1a1412;border-color:#44403c}[data-theme=dark] .chat-context-menu button{color:#fef3c7}[data-theme=dark] .chat-context-menu button:hover{background:#f59e0b26}[data-theme=dark] .gif-picker{background:#1a1412;border-color:#44403c}[data-theme=dark] .gif-search-input{background:#292524;border-color:#44403c;color:#fef3c7}[data-theme=dark] .gif-close-btn{background:#292524;color:#d6d3d1}[data-theme=dark] .gif-toggle-btn{background:#292524;border-color:#44403c;color:#a78bfa}[data-theme=dark] .edit-form input{background:#292524;border-color:#44403c;color:#fef3c7}[data-theme=dark] .edit-cancel{border-color:#44403c;color:#d6d3d1}[data-theme=dark] .edit-cancel:hover{background:#292524}.rooms-header-actions{display:flex;align-items:center;gap:8px}.new-chat-btn{width:32px;height:32px;border-radius:50%;border:none;background:#f59e0b;color:#fff;font-size:14px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .2s,transform .15s}.new-chat-btn:hover{background:#d97706;transform:scale(1.05)}.start-chat-btn{margin-top:12px;padding:8px 20px;border:none;border-radius:8px;background:#f59e0b;color:#fff;font-weight:600;font-size:14px;cursor:pointer;transition:background .2s}.start-chat-btn:hover{background:#d97706}.rooms-empty-icon{font-size:3rem;display:block;margin-bottom:8px}.room-avatar{position:relative}.online-dot{position:absolute;bottom:0;right:0;width:12px;height:12px;background:#00b894;border-radius:50%;border:2px solid white}.chat-back-btn{display:none;border:none;background:none;font-size:20px;cursor:pointer;color:#1a1a2e;padding:4px 8px;margin-right:4px}.chat-header-info{display:flex;flex-direction:column;gap:2px}.chat-status{font-size:12px;font-weight:500}.chat-status.online{color:#00b894}.chat-status.offline{color:#999}.chat-lesson-tag{font-size:12px;color:#d97706;font-weight:500}.messages-empty{text-align:center;padding:60px 20px;color:#999}.messages-empty span{font-size:3rem;display:block;margin-bottom:12px}.contact-picker-overlay{position:fixed;inset:0;background:#0006;display:flex;align-items:center;justify-content:center;z-index:1000;animation:fadeIn .15s ease}.contact-picker{background:#fff;border-radius:16px;width:420px;max-width:90vw;max-height:80vh;display:flex;flex-direction:column;box-shadow:0 8px 40px #00000026;animation:slideUp .2s ease;overflow:hidden}@keyframes slideUp{0%{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}.contact-picker-header{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid #e0e3e8}.contact-picker-header h3{margin:0;font-size:1.1rem;color:#1a1a2e}.contact-picker-close{width:32px;height:32px;border-radius:50%;border:1px solid #e0e3e8;background:#fff;color:#666;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:16px;transition:background .2s}.contact-picker-close:hover{background:#f0f2f5}.contact-search-wrap{padding:12px 20px}.contact-search-input{width:100%;padding:10px 14px;border:1px solid #e0e3e8;border-radius:8px;font-size:14px;outline:none;box-sizing:border-box;transition:border-color .2s}.contact-search-input:focus{border-color:#f59e0b}.contact-list{flex:1;overflow-y:auto;max-height:400px}.contact-loading,.contact-empty{padding:40px 20px;text-align:center;color:#999}.contact-hint{font-size:13px;margin-top:8px;color:#bbb}.contact-item{display:flex;align-items:center;padding:12px 20px;gap:12px;cursor:pointer;transition:background .15s}.contact-item:hover{background:#fef3c7}.contact-item.disabled{opacity:.5;pointer-events:none}.contact-avatar{width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,#f59e0b,#fbbf24);display:flex;align-items:center;justify-content:center;flex-shrink:0;position:relative;overflow:visible}.contact-avatar img{width:100%;height:100%;object-fit:cover;border-radius:50%}.contact-avatar span:not(.online-dot){color:#fff;font-weight:600;font-size:13px}.contact-info{flex:1;min-width:0}.contact-info h4{margin:0 0 2px;font-size:14px;color:#1a1a2e;font-weight:600}.contact-role{font-size:12px;color:#888}.contact-existing{font-size:11px;color:#f59e0b;font-weight:600;background:#fef3c7;padding:2px 8px;border-radius:10px;white-space:nowrap}@media(max-width:768px){.chat-container{flex-direction:column;height:100dvh;border-radius:0}.chat-rooms{width:100%;border-right:none;border-bottom:1px solid #e0e3e8}.chat-rooms.hidden-mobile,.chat-window.hidden-mobile{display:none}.chat-back-btn{display:block}}[data-theme=dark] .new-chat-btn{background:#d97706}[data-theme=dark] .new-chat-btn:hover{background:#f59e0b}[data-theme=dark] .start-chat-btn{background:#d97706}[data-theme=dark] .start-chat-btn:hover{background:#f59e0b}[data-theme=dark] .online-dot{border-color:#1a1412}[data-theme=dark] .chat-back-btn{color:#fef3c7}[data-theme=dark] .chat-status.offline{color:#78716c}[data-theme=dark] .contact-picker{background:#1a1412}[data-theme=dark] .contact-picker-header{border-color:#44403c}[data-theme=dark] .contact-picker-header h3{color:#fef3c7}[data-theme=dark] .contact-picker-close{background:#292524;border-color:#44403c;color:#d6d3d1}[data-theme=dark] .contact-picker-close:hover{background:#44403c}[data-theme=dark] .contact-search-input{background:#292524;border-color:#44403c;color:#fef3c7}[data-theme=dark] .contact-item:hover{background:#f59e0b1a}[data-theme=dark] .contact-info h4{color:#fef3c7}[data-theme=dark] .contact-role{color:#a8a29e}[data-theme=dark] .contact-existing{background:#f59e0b26;color:#fbbf24}.student-management-overlay{position:fixed;inset:0;background:#000000b3;display:flex;align-items:center;justify-content:center;z-index:1000}.student-management-modal{background:#fff;border-radius:16px;width:90%;max-width:1000px;max-height:85vh;display:flex;flex-direction:column;overflow:hidden;box-shadow:0 20px 60px #0000004d}.sm-header{display:flex;justify-content:space-between;align-items:center;padding:1.5rem 2rem;background:linear-gradient(135deg,#f59e0b,#d97706);color:#fff}.sm-header h2{margin:0;font-size:1.5rem}.sm-header .close-btn{background:#fff3;border:none;color:#fff;width:36px;height:36px;border-radius:50%;font-size:1.2rem;cursor:pointer;transition:background .2s}.sm-header .close-btn:hover{background:#ffffff4d}.sm-alert{padding:1rem 2rem;font-weight:500}.sm-alert.error{background:#fee2e2;color:#dc2626}.sm-alert.success{background:#dcfce7;color:#16a34a}.sm-content{display:flex;flex:1;overflow:hidden}.students-sidebar{width:320px;background:#f8fafc;border-right:1px solid #e2e8f0;display:flex;flex-direction:column}.sidebar-header{display:flex;justify-content:space-between;align-items:center;padding:1rem;border-bottom:1px solid #e2e8f0}.sidebar-header h3{margin:0;font-size:1rem;color:#475569}.sidebar-header .add-btn{background:#f59e0b;color:#fff;border:none;padding:.5rem 1rem;border-radius:6px;font-size:.85rem;cursor:pointer;transition:background .2s}.sidebar-header .add-btn:hover{background:#f59e0b}.students-list{flex:1;overflow-y:auto;padding:.5rem}.student-item{display:flex;align-items:center;gap:.75rem;width:100%;padding:.75rem;background:#fff;border:1px solid #e2e8f0;border-radius:8px;margin-bottom:.5rem;cursor:pointer;text-align:left;transition:all .2s}.student-item:hover{border-color:#f59e0b;box-shadow:0 2px 8px #f59e0b26}.student-item.selected{border-color:#f59e0b;background:#f0f4ff}.student-avatar{width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,#f59e0b,#d97706);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:600;font-size:.9rem;overflow:hidden;position:relative}.student-avatar img{width:100%;height:100%;object-fit:cover}.online-indicator{position:absolute;bottom:0;right:0;width:12px;height:12px;border-radius:50%;border:2px solid white;transition:background-color .3s}.online-indicator.online{background-color:#22c55e;box-shadow:0 0 6px #22c55e99}.online-indicator.offline{background-color:#9ca3af}.student-avatar.large{width:80px;height:80px;font-size:1.5rem}.student-avatar.large .online-indicator{width:16px;height:16px;border-width:3px}.student-info{flex:1;min-width:0}.student-info .name{display:block;font-weight:600;color:#1e293b;font-size:.95rem}.student-info .email{display:block;color:#64748b;font-size:.8rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.age-badge{padding:.25rem .5rem;border-radius:4px;font-size:.7rem;font-weight:600;text-transform:uppercase}.age-badge.child{background:#dbeafe;color:#1d4ed8}.age-badge.teenager{background:#fef3c7;color:#d97706}.age-badge.adult{background:#dcfce7;color:#16a34a}.no-students{text-align:center;padding:2rem;color:#64748b}.student-details{flex:1;padding:2rem;overflow-y:auto}.no-selection{display:flex;align-items:center;justify-content:center;height:100%;color:#94a3b8;font-size:1.1rem}.add-student-form{max-width:500px}.add-student-form h3{margin:0 0 1.5rem;color:#1e293b}.form-group{margin-bottom:1.25rem}.form-group label{display:block;margin-bottom:.5rem;font-weight:500;color:#334155}.form-group input,.form-group textarea{width:100%;padding:.75rem 1rem;border:1px solid #cbd5e1;border-radius:8px;font-size:1rem;transition:border-color .2s}.form-group small{display:block;margin-top:.25rem;color:#94a3b8;font-size:.8rem}.form-actions{display:flex;gap:1rem;margin-top:1.5rem}.form-actions button{padding:.75rem 1.5rem;border-radius:8px;font-size:1rem;cursor:pointer;transition:all .2s}.form-actions button:first-child{background:#f1f5f9;border:1px solid #e2e8f0;color:#475569}.form-actions button.primary:hover{transform:translateY(-1px);box-shadow:0 4px 12px #f59e0b66}.student-detail-view{max-width:600px}.student-header{display:flex;align-items:center;gap:1.5rem;margin-bottom:2rem;padding-bottom:1.5rem;border-bottom:1px solid #e2e8f0}.student-main-info h3{margin:0 0 .25rem;font-size:1.5rem;color:#1e293b}.student-main-info .email{color:#64748b;margin:.25rem 0 .5rem}.info-section{margin-bottom:1.5rem;padding:1rem;background:#f8fafc;border-radius:8px}.info-section h4{margin:0 0 .75rem;font-size:1rem;color:#475569}.info-section p{margin:.25rem 0;color:#1e293b}.notes-view{display:flex;justify-content:space-between;align-items:flex-start;gap:1rem}.notes-view p{flex:1;color:#64748b}.notes-view button{background:none;border:none;color:#f59e0b;cursor:pointer;padding:.25rem .5rem}.notes-edit textarea{width:100%;padding:.75rem;border:1px solid #cbd5e1;border-radius:8px;margin-bottom:.75rem;font-family:inherit}.notes-actions{display:flex;gap:.5rem;justify-content:flex-end}.notes-actions button{padding:.5rem 1rem;border-radius:6px;font-size:.85rem;cursor:pointer}.notes-actions button:first-child{background:#f1f5f9;border:1px solid #e2e8f0;color:#475569}.notes-actions button.primary{background:#f59e0b;border:none;color:#fff}.danger-zone{margin-top:2rem;padding-top:1.5rem;border-top:1px solid #fecaca}.remove-btn{background:#fef2f2;color:#dc2626;border:1px solid #fecaca;padding:.75rem 1.5rem;border-radius:8px;cursor:pointer;font-size:.9rem;transition:all .2s}.remove-btn:hover{background:#fee2e2;border-color:#f87171}@media(max-width:768px){.sm-content{flex-direction:column}.students-sidebar{width:100%;max-height:200px}.student-header{flex-direction:column;text-align:center}}[data-theme=dark] .student-management-modal{background:var(--surface-color)}[data-theme=dark] .sm-alert.error{background:#f8717126;color:#f87171}[data-theme=dark] .sm-alert.success{background:#34d39926;color:#34d399}[data-theme=dark] .students-sidebar{background:var(--surface-secondary);border-right-color:var(--border-color)}[data-theme=dark] .sidebar-header{border-bottom-color:var(--border-color)}[data-theme=dark] .sidebar-header h3{color:var(--text-secondary)}[data-theme=dark] .student-item{background:var(--card-bg);border-color:var(--card-border)}[data-theme=dark] .student-item:hover{border-color:var(--primary-color);box-shadow:0 2px 8px #fbbf241f}[data-theme=dark] .student-item.selected{border-color:var(--primary-color);background:#fbbf241a}[data-theme=dark] .student-info .name{color:var(--text-primary)}[data-theme=dark] .student-info .email{color:var(--text-tertiary)}[data-theme=dark] .online-indicator{border-color:var(--surface-color)}[data-theme=dark] .age-badge.child{background:#3b82f626;color:#60a5fa}[data-theme=dark] .age-badge.teenager{background:#fbbf2426;color:#fbbf24}[data-theme=dark] .age-badge.adult{background:#34d39926;color:#34d399}[data-theme=dark] .no-students,[data-theme=dark] .no-selection{color:var(--text-tertiary)}[data-theme=dark] .add-student-form h3{color:var(--text-primary)}[data-theme=dark] .form-group label{color:var(--text-secondary)}[data-theme=dark] .form-group input,[data-theme=dark] .form-group textarea{background:var(--input-bg);border-color:var(--input-border);color:var(--text-primary)}[data-theme=dark] .form-group input:focus,[data-theme=dark] .form-group textarea:focus{border-color:var(--input-focus-border);box-shadow:0 0 0 3px #fbbf2426}[data-theme=dark] .form-group small{color:var(--text-tertiary)}[data-theme=dark] .form-actions button:first-child{background:var(--surface-secondary);border-color:var(--border-color);color:var(--text-secondary)}[data-theme=dark] .student-header{border-bottom-color:var(--border-color)}[data-theme=dark] .student-main-info h3{color:var(--text-primary)}[data-theme=dark] .student-main-info .email{color:var(--text-tertiary)}[data-theme=dark] .info-section{background:var(--surface-secondary)}[data-theme=dark] .info-section h4{color:var(--text-secondary)}[data-theme=dark] .info-section p{color:var(--text-primary)}[data-theme=dark] .notes-view p{color:var(--text-tertiary)}[data-theme=dark] .notes-edit textarea{background:var(--input-bg);border-color:var(--input-border);color:var(--text-primary)}[data-theme=dark] .notes-actions button:first-child{background:var(--surface-secondary);border-color:var(--border-color);color:var(--text-secondary)}[data-theme=dark] .danger-zone{border-top-color:#f871714d}[data-theme=dark] .student-management-modal .remove-btn{background:#f871711a;color:#f87171;border-color:#f871714d}[data-theme=dark] .student-management-modal .remove-btn:hover{background:#f8717133;border-color:#f87171}.homework-list{padding:16px}.homework-filters{display:flex;gap:8px;margin-bottom:20px;flex-wrap:wrap}.homework-filters button{padding:8px 16px;border:1px solid #ddd;background:#fff;border-radius:20px;cursor:pointer;font-size:14px;transition:all .2s}.homework-filters button:hover{background:#f5f5f5}.homework-filters button.active{background:#f59e0b;color:#fff;border-color:#f59e0b}.homework-loading,.homework-empty{text-align:center;padding:60px 20px;color:#666}.homework-empty p{font-size:18px}.homework-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:16px}.homework-card{background:#fff;border-radius:12px;padding:16px;box-shadow:0 2px 8px #00000014;cursor:pointer;transition:all .2s;border-left:4px solid transparent}.homework-card:hover{box-shadow:0 4px 16px #0000001f;transform:translateY(-2px)}.homework-card.overdue{border-left-color:#ef4444;background:#fef2f2}.hw-header{display:flex;justify-content:space-between;align-items:flex-start;gap:12px;margin-bottom:8px}.hw-header h3{margin:0;font-size:16px;font-weight:600;color:#1e293b}.status-badge{font-size:11px;padding:4px 8px;border-radius:12px;font-weight:500;white-space:nowrap}.status-badge.blue{background:#dbeafe;color:#1d4ed8}.status-badge.yellow{background:#fef9c3;color:#a16207}.status-badge.green{background:#dcfce7;color:#15803d}.status-badge.orange{background:#fed7aa;color:#c2410c}.status-badge.purple{background:#e9d5ff;color:#7e22ce}.status-badge.gray{background:#e5e7eb;color:#4b5563}.hw-description{color:#64748b;font-size:14px;margin:0 0 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button.primary{background:#f59e0b;color:#fff;border:none}.form-actions button.primary:hover{background:#d97706}.form-actions button:disabled{opacity:.6;cursor:not-allowed}.homework-view-overlay{position:fixed;inset:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:1000;padding:20px}.homework-view-modal{background:#fff;border-radius:16px;width:100%;max-width:800px;max-height:90vh;overflow:hidden;display:flex;flex-direction:column}.homework-view-modal header{display:flex;justify-content:space-between;align-items:flex-start;padding:20px;border-bottom:1px solid #e5e7eb}.homework-view-modal header h2{margin:0 0 4px;font-size:20px;color:#1e293b}.homework-view-modal .lesson-tag{font-size:12px;color:#64748b;background:#f1f5f9;padding:4px 8px;border-radius:6px}.homework-view-modal .close-btn{background:none;border:none;font-size:24px;cursor:pointer;color:#64748b;padding:4px;line-height:1}.homework-view-content{padding:20px;overflow-y:auto}.hw-info-bar{display:flex;gap:16px;flex-wrap:wrap;padding:12px 16px;background:#f8fafc;border-radius:8px;margin-bottom:20px;font-size:14px;color:#475569}.hw-description-box{background:#fff;border:1px solid #e5e7eb;border-radius:8px;padding:16px;margin-bottom:20px}.hw-description-box h4{margin:0 0 8px;font-size:14px;color:#374151}.hw-description-box p{margin:0;color:#64748b;line-height:1.6}.submission-section{margin-top:20px}.submission-section h4{margin:0 0 12px;font-size:14px;color:#374151}.submission-section textarea{width:100%;padding:12px;border:1px solid #d1d5db;border-radius:8px;font-size:14px;resize:vertical;min-height:150px}.submission-section textarea:focus{outline:none;border-color:#f59e0b;box-shadow:0 0 0 3px #f59e0b1a}.submit-btn{margin-top:16px;padding:12px 24px;background:#10b981;color:#fff;border:none;border-radius:8px;font-size:15px;font-weight:500;cursor:pointer;transition:all .2s}.submit-btn:hover{background:#059669}.submit-btn:disabled{opacity:.6;cursor:not-allowed}.submitted-info{margin-top:16px;padding:12px 16px;background:#dcfce7;border-radius:8px;color:#15803d;font-size:14px}.checked-section{text-align:center;padding:20px}.score-display{display:flex;flex-direction:column;align-items:center;margin-bottom:24px}.score-display .score{font-size:48px;font-weight:700;color:#f59e0b}.score-display .score-label{font-size:16px;color:#64748b}.teacher-feedback,.my-submission{text-align:left;background:#f8fafc;border-radius:8px;padding:16px;margin-top:16px}.teacher-feedback h4,.my-submission h4{margin:0 0 8px;font-size:14px;color:#374151}.teacher-feedback p,.my-submission p{margin:0;color:#64748b;white-space:pre-wrap}.check-section{margin-top:20px}.student-submission{margin-bottom:24px}.student-submission h4{margin:0 0 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.2s;width:100%}.check-btn:hover{background:#d97706}.check-btn:disabled{opacity:.6;cursor:not-allowed}.rubric-section{margin-top:20px;padding:16px;background:var(--color-surface, #f8fafc);border:1px solid var(--color-border, #e2e8f0);border-radius:8px}.rubric-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.rubric-header label{font-weight:600;color:var(--color-text-primary, #1c1917)}.add-rubric-btn{padding:6px 14px;background:var(--color-primary, #f59e0b);color:#fff;border:none;border-radius:6px;cursor:pointer;font-size:13px;transition:background .2s}.add-rubric-btn:hover{background:#d97706}.rubric-row{display:grid;grid-template-columns:1fr 1fr 70px 32px;gap:8px;margin-bottom:8px;align-items:center}.rubric-row input{padding:7px 10px;border:1px solid #d1d5db;border-radius:6px;font-size:13px}.remove-rubric-btn{padding:4px 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.form-row,.homework-grid{grid-template-columns:1fr}.hw-info-bar{flex-direction:column;gap:8px}}.auth-overlay{position:fixed;inset:0;z-index:1500;padding:var(--space-4);display:grid;place-items:center;background:#0000008c;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.auth-modal{width:min(760px,96vw);max-height:min(92vh,860px);overflow-y:auto;position:relative;border-radius:var(--radius-lg);border:1px solid var(--border-color);background:var(--surface-color);box-shadow:var(--shadow-xl)}.auth-close{position:absolute;top:var(--space-4);right:var(--space-4);width:36px;height:36px;border:1px solid var(--border-color);border-radius:999px;background:var(--surface-secondary);color:var(--text-secondary);font-size:1rem;cursor:pointer;display:grid;place-items:center;z-index:20;transition:transform var(--motion-fast) var(--ease-smooth),background-color var(--motion-fast) var(--ease-smooth)}.auth-close:hover{transform:rotate(90deg);background:var(--surface-hover)}.auth-tabs{display:flex;border-bottom:1px solid var(--border-color)}.auth-tabs button{flex:1;min-height:56px;border:0;border-bottom:3px solid transparent;background:transparent;color:var(--text-secondary);font-weight:700;cursor:pointer;transition:color var(--motion-fast) var(--ease-smooth),background-color var(--motion-fast) var(--ease-smooth),border-color var(--motion-fast) var(--ease-smooth)}.auth-tabs button:hover{color:var(--text-primary);background:var(--surface-hover)}.auth-tabs button.active{color:var(--text-primary);border-bottom-color:var(--primary)}.auth-alert{margin:var(--space-4) var(--space-6) 0;border-radius:var(--radius-sm);padding:.7rem .9rem;font-size:.92rem}.auth-alert.error{background:#fff1ef;border:1px solid #fec7c0;color:#a42b22}.auth-alert.success{background:#eefcf4;border:1px solid #b8ebcb;color:#10663b}.auth-form{padding:var(--space-6)}.auth-form h2{margin-bottom:var(--space-2);font-family:var(--font-display);color:var(--text-primary)}.auth-form>p{margin-bottom:var(--space-5);color:var(--text-secondary)}.form-section{margin-bottom:var(--space-6);padding-bottom:var(--space-5);border-bottom:1px solid var(--border-light)}.form-section:last-of-type{margin-bottom:0;border-bottom:0;padding-bottom:0}.form-section h3{margin-bottom:var(--space-3);color:var(--text-secondary);font-size:.84rem;text-transform:uppercase;letter-spacing:.08em}.form-group{margin-bottom:var(--space-3)}.form-group:last-child{margin-bottom:0}.form-group label{display:block;margin-bottom:.35rem;color:var(--text-secondary);font-size:.9rem;font-weight:600}.form-group input,.form-group select{width:100%;min-height:46px;border-radius:var(--radius-sm);border:1px solid var(--border-color);padding:.72rem .82rem;background:var(--surface-color);color:var(--text-primary);transition:border-color var(--motion-fast) var(--ease-smooth),box-shadow var(--motion-fast) var(--ease-smooth)}.form-group input:focus,.form-group select:focus{outline:none;border-color:var(--primary);box-shadow:var(--focus-ring)}.form-group input::placeholder{color:var(--text-muted)}.form-row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--space-3)}.password-strength{margin-top:.42rem;display:flex;align-items:center;gap:.45rem}.strength-bar{display:flex;flex:1;gap:3px}.strength-segment{flex:1;height:4px;border-radius:999px}.password-strength span{font-size:.75rem;min-width:96px;text-align:right}.form-terms{margin:var(--space-4) 0}.form-terms label{display:flex;align-items:flex-start;gap:.5rem;color:var(--text-secondary);font-size:.86rem}.form-terms input[type=checkbox]{width:18px;height:18px;margin-top:2px;accent-color:var(--primary)}.form-terms a{color:var(--primary-dark);text-decoration:none;font-weight:600}.form-terms a:hover{text-decoration:underline}.terms-link{background:none;border:none;padding:0;cursor:pointer;color:var(--primary-dark);font-weight:600;font-size:inherit;text-decoration:none}.terms-link:hover{text-decoration:underline}.submit-btn{width:100%;min-height:46px;border-radius:var(--radius-md);border:1px solid rgba(146,64,14,.12);background:linear-gradient(135deg,var(--primary),var(--primary-strong));color:#fff9f1;font-weight:700;cursor:pointer;transition:transform var(--motion-fast) var(--ease-smooth),box-shadow var(--motion-fast) var(--ease-smooth)}.submit-btn:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 16px 26px #92400e3d}.submit-btn:disabled{opacity:.7;cursor:not-allowed}.link-btn{width:100%;margin-top:var(--space-3);background:transparent;border:0;color:var(--primary-dark);font-weight:600;cursor:pointer}.link-btn:hover{text-decoration:underline}.verification-screen{padding:var(--space-9) var(--space-6);text-align:center}.verification-icon{font-size:clamp(2.9rem,8vw,4rem);margin-bottom:var(--space-4)}.verification-screen h2{margin-bottom:var(--space-2);color:var(--text-primary);font-family:var(--font-display)}.verification-screen p{color:var(--text-secondary)}.verification-screen .dev-note{margin-top:var(--space-4);padding:.7rem;border-radius:var(--radius-sm);background:#fff4da;border:1px solid #f6d594;color:#8a530f;font-size:.78rem}.verify-btn{margin-top:var(--space-3);min-height:44px;border-radius:var(--radius-sm);border:0;background:#149252;color:#fff;font-weight:700;padding:.72rem 1.2rem;cursor:pointer}.verify-btn:hover{background:#0f7f47}.register-form{max-height:calc(92vh - 56px);overflow-y:auto}.recaptcha-container{display:flex;justify-content:center;padding:.45rem 0}.honeypot-field{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden;opacity:0}@media(max-width:760px){.auth-overlay{padding:var(--space-2)}.auth-modal{width:100%;max-height:96vh}.auth-form{padding:var(--space-4)}.form-row{grid-template-columns:1fr}}[data-theme=dark] .auth-modal{background:linear-gradient(180deg,#2b2018f2,#1f1812f5),var(--surface);border-color:#c7954b4d}[data-theme=dark] .auth-tabs,[data-theme=dark] .form-section{border-color:#c7954b38}[data-theme=dark] .auth-tabs button,[data-theme=dark] .form-group label,[data-theme=dark] .form-terms label,[data-theme=dark] .verification-screen p{color:#ebdcc8}[data-theme=dark] .form-group input,[data-theme=dark] .form-group select,[data-theme=dark] .auth-close{background:#34271ee0;color:#fff5e8;border-color:#c7954b4d}[data-theme=dark] .auth-form>p{color:var(--text-secondary)}[data-theme=dark] .form-section{border-bottom-color:var(--border-color)}[data-theme=dark] .form-section h3,[data-theme=dark] .form-group label{color:var(--text-secondary)}[data-theme=dark] .form-group input,[data-theme=dark] .form-group select{background:var(--input-bg);border-color:var(--input-border);color:var(--text-primary)}[data-theme=dark] .form-group input:focus,[data-theme=dark] .form-group select:focus{border-color:var(--primary-color);box-shadow:0 0 0 3px #f59e0b33}[data-theme=dark] .form-group input::placeholder{color:var(--text-muted)}[data-theme=dark] .form-terms label{color:var(--text-secondary)}[data-theme=dark] .form-terms a,[data-theme=dark] .link-btn{color:var(--primary-color)}.auth-modal :is(button,input,select,textarea,a):focus-visible{outline:none;box-shadow:var(--focus-ring)}.auth-tabs button.active{color:#6d2e0a}.auth-alert.error,.auth-alert.success{font-weight:600}@media(prefers-reduced-motion:reduce){.auth-overlay *,.auth-overlay *:before,.auth-overlay *:after{animation:none!important;transition-duration:.01ms!important}.auth-close:hover,.submit-btn:hover:not(:disabled){transform:none!important}}[data-theme=dark] .verification-screen h2{color:var(--text-primary)}[data-theme=dark] .verification-screen p{color:var(--text-secondary)}[data-theme=dark] .verification-screen .dev-note{background:#fbbf241a;color:#fcd34d}.auth-container{background:var(--surface-primary);border:1px solid var(--border-subtle);border-radius:var(--radius-xl);box-shadow:var(--shadow-lg)}.auth-input{background:var(--surface-secondary);border:1.5px solid var(--border-subtle);border-radius:var(--radius-md);color:var(--text-primary);font-family:var(--font-primary);transition:border-color var(--transition-fast),box-shadow var(--transition-fast)}.auth-input:focus{border-color:var(--color-honey);box-shadow:0 0 0 3px var(--color-honey-light);outline:none}.auth-button-primary{background:var(--gradient-honey-warm);border-radius:var(--radius-lg);color:var(--color-white);font-family:var(--font-primary);font-weight:600;letter-spacing:.02em;transition:opacity var(--transition-fast),transform var(--transition-fast)}.auth-button-primary:hover:not(:disabled){opacity:.9;transform:translateY(-1px)}.auth-button-primary:disabled{opacity:.5;cursor:not-allowed}.auth-error{background:var(--color-error-bg, rgba(239, 68, 68, .08));border:1px solid var(--color-error, #ef4444);border-radius:var(--radius-md);color:var(--color-error, #ef4444);font-size:var(--font-size-sm)}.auth-success{background:var(--color-success-bg, rgba(34, 197, 94, .08));border:1px solid var(--color-success, #22c55e);border-radius:var(--radius-md);color:var(--color-success, #22c55e);font-size:var(--font-size-sm)}.auth-divider{color:var(--text-muted);font-size:var(--font-size-sm);display:flex;align-items:center;gap:var(--space-3);margin:var(--space-4) 0;text-transform:uppercase;letter-spacing:.05em}.auth-divider:before,.auth-divider:after{content:"";flex:1;height:1px;background:var(--border-subtle)}.auth-link{color:var(--color-honey);font-weight:500;text-decoration:none;transition:color var(--transition-fast)}.auth-link:hover{color:var(--color-honey-dark, #d97706);text-decoration:underline}.auth-google-btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2, .5rem);width:100%;padding:var(--space-3, .75rem) var(--space-4, 1rem);background:var(--surface-primary, #ffffff);border:1.5px solid var(--border-subtle, #d1d5db);border-radius:var(--radius-lg, .5rem);color:var(--text-primary, #111827);font-family:var(--font-primary, inherit);font-size:var(--font-size-base, 1rem);font-weight:500;text-decoration:none;cursor:pointer;transition:background var(--transition-fast, .15s),border-color var(--transition-fast, .15s)}.auth-google-btn:hover{background:var(--surface-hover, #f9fafb);border-color:var(--color-honey, #f59e0b)}.auth-google-btn svg{flex-shrink:0}.availability-picker{-webkit-user-select:none;user-select:none}.av-picker-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:.75rem;font-size:.875rem;color:var(--text-secondary)}.av-slot-count{font-weight:600;color:var(--primary)}.av-clear-btn{background:none;border:1px solid var(--border-color);border-radius:var(--radius-sm);padding:.2rem .6rem;font-size:.8rem;color:var(--text-secondary);cursor:pointer;transition:all var(--motion-fast)}.av-clear-btn:hover{border-color:#ef4444;color:#ef4444}.av-grid-wrapper{overflow-x:auto;overflow-y:auto;max-height:480px;border:1px solid var(--border-color);border-radius:var(--radius-md)}.av-grid{display:grid;grid-template-columns:3.5rem repeat(7,minmax(2.4rem,1fr));gap:2px;padding:.5rem;background:var(--bg-secondary);min-width:360px}.av-day-header{text-align:center;font-size:.75rem;font-weight:700;color:var(--text-secondary);padding:.25rem 0;text-transform:uppercase;letter-spacing:.05em}.av-hour-label{font-size:.7rem;color:var(--text-muted);display:flex;align-items:center;padding-right:.4rem;justify-content:flex-end;white-space:nowrap}.av-cell{height:1.75rem;border-radius:3px;background:var(--bg-primary);border:1px solid var(--border-color);cursor:pointer;transition:background var(--motion-fast),transform var(--motion-fast)}.av-cell:not(.readonly):hover{background:var(--primary-light);border-color:var(--primary);transform:scale(1.05)}.av-cell.selected{background:var(--primary);border-color:var(--primary-dark)}.av-cell.selected:not(.readonly):hover{background:var(--primary-dark)}.av-cell.readonly{cursor:default}.av-cell.selected.readonly{background:var(--primary);opacity:.85}.account-settings-overlay{position:fixed;inset:0;background:#0009;display:flex;align-items:center;justify-content:center;z-index:1500;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.account-settings-modal{background:#fff;border-radius:16px;width:90%;max-width:900px;max-height:90vh;overflow:hidden;box-shadow:0 25px 50px #00000040;display:flex;flex-direction:column}.settings-header{display:flex;justify-content:space-between;align-items:center;padding:20px 24px;border-bottom:1px solid #e5e7eb;background:linear-gradient(135deg,#f59e0b,#d97706);color:#fff}.settings-header h2{margin:0;font-size:1.5rem}.settings-header .close-btn{background:#fff3;border:none;width:36px;height:36px;border-radius:50%;font-size:1.2rem;cursor:pointer;color:#fff;transition:background .2s}.settings-header .close-btn:hover{background:#ffffff4d}.settings-content{display:flex;flex:1;overflow:hidden}.settings-nav{width:220px;border-right:1px solid #e5e7eb;background:#f8fafc;padding:16px 0;display:flex;flex-direction:column;gap:4px}.settings-nav button{display:flex;align-items:center;gap:12px;padding:14px 20px;border:none;background:transparent;text-align:left;cursor:pointer;font-size:.95rem;color:#4b5563;transition:all .2s;border-left:3px solid transparent}.settings-nav button:hover{background:#e5e7eb;color:#1f2937}.settings-nav button.active{background:#fff;color:#f59e0b;border-left-color:#f59e0b;font-weight:600}.settings-nav button.danger{color:#dc2626}.settings-nav button.danger:hover{background:#fee2e2}.settings-nav button.danger.active{color:#dc2626;border-left-color:#dc2626;background:#fee2e2}.settings-main{flex:1;padding:24px;overflow-y:auto}.settings-section h3{margin:0 0 20px;font-size:1.4rem;color:#1f2937}.section-description{color:#6b7280;margin-bottom:20px;line-height:1.5}.section-description.warning{color:#dc2626;font-weight:500}.settings-alert{padding:12px 16px;border-radius:8px;margin-bottom:16px;font-weight:500}.settings-alert.error{background:#fee2e2;color:#dc2626;border:1px solid #fecaca}.settings-alert.success{background:#d1fae5;color:#059669;border:1px solid #a7f3d0}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}.form-group label{display:block;margin-bottom:6px;font-weight:500;color:#374151;font-size:.9rem}.form-group input,.form-group select{width:100%;padding:10px 14px;border:1px solid #d1d5db;border-radius:8px;font-size:1rem;transition:border-color .2s,box-shadow .2s}.form-group input:focus,.form-group select:focus{outline:none;border-color:#f59e0b;box-shadow:0 0 0 3px #f59e0b1a}.form-group input.disabled-input{background:#f3f4f6;color:#6b7280;cursor:not-allowed}.form-group small{color:#6b7280;font-size:.8rem;margin-top:4px;display:block}.save-btn{background:linear-gradient(135deg,#f59e0b,#d97706);color:#fff;border:none;padding:12px 24px;border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;transition:transform .2s,box-shadow .2s}.save-btn:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 4px 12px #f59e0b4d}.save-btn:disabled{opacity:.6;cursor:not-allowed}.verification-warning{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;background:#fef3cd;border:1px solid #ffc107;border-radius:8px;margin-bottom:20px}.verification-warning span{color:#856404;font-weight:500}.verification-warning button{background:#ffc107;color:#856404;border:none;padding:8px 16px;border-radius:6px;cursor:pointer;font-weight:500}.verification-warning button:hover{background:#e0a800}.account-info{margin-top:32px;padding-top:24px;border-top:1px solid #e5e7eb}.account-info h4{margin:0 0 16px;color:#374151}.info-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.info-item .label{font-size:.85rem;color:#6b7280}.info-item .value{font-weight:500;color:#1f2937}.info-item .value.verified{color:#059669}.info-item .value.unverified{color:#dc2626}.security-block{background:#f8fafc;padding:20px;border-radius:12px;margin-bottom:20px;border:1px solid #e5e7eb}.security-block h4{margin:0 0 16px;color:#374151;font-size:1.1rem}.action-btn{background:#4b5563;color:#fff;border:none;padding:10px 20px;border-radius:6px;font-weight:500;cursor:pointer;transition:background .2s}.action-btn:hover:not(:disabled){background:#374151}.action-btn:disabled{opacity:.6;cursor:not-allowed}.password-strength{margin-top:8px;display:flex;align-items:center;gap:12px}.strength-bar{display:flex;gap:4px;flex:1}.strength-segment{height:6px;flex:1;border-radius:3px;background:#e5e7eb;transition:background .3s}.password-requirements{background:#f0fdf4;border:1px solid #86efac;border-radius:8px;padding:16px}.password-requirements h4{margin:0 0 12px;color:#166534;font-size:.95rem}.password-requirements ul{margin:0;padding-left:20px;color:#15803d}.password-requirements li{margin-bottom:4px}.notification-options{display:flex;flex-direction:column;gap:12px;margin-bottom:24px}.notification-toggle{display:flex;align-items:flex-start;gap:16px;padding:16px;background:#f8fafc;border-radius:12px;border:1px solid #e5e7eb;cursor:pointer;transition:border-color .2s}.notification-toggle:hover{border-color:#f59e0b}.notification-toggle input[type=checkbox]{margin-top:4px;width:20px;height:20px;accent-color:#f59e0b}.toggle-content{flex:1}.toggle-label{display:block;font-weight:500;color:#1f2937;margin-bottom:4px}.toggle-desc{font-size:.85rem;color:#6b7280}.danger-zone .danger-block{background:#fef2f2;border:1px solid #fecaca;border-radius:12px;padding:20px}.danger-block h4{color:#dc2626;margin:0 0 12px}.danger-block p{color:#7f1d1d;margin-bottom:16px;line-height:1.5}.delete-btn{background:#dc2626;color:#fff;border:none;padding:12px 24px;border-radius:8px;font-weight:600;cursor:pointer;transition:background .2s}.delete-btn:hover:not(:disabled){background:#b91c1c}.delete-btn:disabled{opacity:.6;cursor:not-allowed}@media(max-width:768px){.account-settings-modal{width:100%;height:100%;max-height:100%;border-radius:0}.settings-content{flex-direction:column}.settings-nav{width:100%;flex-direction:row;overflow-x:auto;border-right:none;border-bottom:1px solid #e5e7eb;padding:8px;gap:8px}.settings-nav button{padding:10px 16px;border-left:none;border-radius:8px;white-space:nowrap}.settings-nav button.active{border-left:none;background:#f59e0b;color:#fff}.form-row,.info-grid{grid-template-columns:1fr}}.home-dashboard{display:flex;flex-direction:column;gap:0;min-height:calc(100vh - 180px);padding:24px 0}.dashboard-sidebar{display:flex;flex-direction:column;gap:20px}.mini-calendar{background:var(--surface-color);border-radius:16px;padding:20px;box-shadow:var(--shadow)}.mini-calendar-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}.mini-calendar-header button{background:none;border:none;font-size:1rem;cursor:pointer;padding:8px;border-radius:8px;color:var(--text-secondary);transition:all .2s}.mini-calendar-header button:hover{background:var(--surface-hover);color:var(--text-primary)}.mini-calendar-header span{font-weight:600;color:var(--text-primary)}.mini-calendar-days-header{display:grid;grid-template-columns:repeat(7,1fr);gap:4px;margin-bottom:8px}.mini-calendar-days-header span{text-align:center;font-size:.75rem;font-weight:600;color:var(--text-tertiary);padding:4px}.mini-calendar-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:4px}.mini-day{aspect-ratio:1;display:flex;flex-direction:column;align-items:center;justify-content:center;border-radius:8px;cursor:pointer;transition:all .2s;position:relative;font-size:.85rem}.mini-day:hover:not(.empty){background:var(--surface-hover)}.mini-day.empty{cursor:default}.mini-day.today{background:linear-gradient(135deg,#f59e0b,#d97706);color:#fff;font-weight:600;box-shadow:0 2px 8px #f59e0b4d;animation:todayPulse 3s ease-in-out infinite}@keyframes todayPulse{0%,to{box-shadow:0 2px 8px #f59e0b4d}50%{box-shadow:0 2px 12px #f59e0b80}}.mini-day.selected:not(.today){background:#fef3c7;color:#92400e;font-weight:600}.mini-day.has-lessons:not(.today):not(.selected){font-weight:500}.day-dots{display:flex;gap:2px;position:absolute;bottom:2px}.day-dots .dot{width:4px;height:4px;border-radius:50%}.mini-day.today .day-dots .dot{background:var(--surface-color)!important}.full-calendar-btn{width:100%;margin-top:16px;padding:12px;background:var(--surface-hover);border:none;border-radius:10px;font-weight:500;color:var(--text-secondary);cursor:pointer;transition:all .2s}.full-calendar-btn:hover{background:var(--border-color);color:var(--text-primary)}.upcoming-panel{background:var(--surface-color);border-radius:16px;padding:20px;box-shadow:var(--shadow)}.upcoming-panel h3{margin:0 0 16px;font-size:1rem;color:var(--text-primary)}.upcoming-panel .no-lessons,.upcoming-panel .loading-lessons{color:var(--text-tertiary);text-align:center;padding:20px 0;font-size:.9rem}.upcoming-list{display:flex;flex-direction:column;gap:12px}.upcoming-item{display:flex;align-items:center;gap:12px;padding:12px;background:var(--surface-secondary);border-radius:10px;cursor:pointer;transition:all .3s cubic-bezier(.4,0,.2,1)}.upcoming-item:hover{background:var(--surface-hover);transform:translate(6px);box-shadow:-3px 0 #f59e0b}.upcoming-date{min-width:44px;text-align:center}.upcoming-date .day{display:block;font-size:1.2rem;font-weight:700;color:var(--text-primary)}.upcoming-date .month{display:block;font-size:.7rem;color:var(--text-secondary);text-transform:uppercase}.upcoming-date .today-label,.upcoming-date .tomorrow-label{display:block;font-size:.75rem;font-weight:600;padding:4px 8px;border-radius:6px}.upcoming-date .today-label{background:#dcfce7;color:#166534}.upcoming-date .tomorrow-label{background:#dbeafe;color:#1e40af}.upcoming-info{flex:1;min-width:0}.upcoming-info .time{display:block;font-size:.75rem;color:var(--text-secondary)}.upcoming-info .title{display:block;font-weight:500;color:var(--text-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.upcoming-info .group-badge{display:inline-block;font-size:.7rem;padding:2px 6px;border-radius:4px;color:#fff;margin-top:4px}.upcoming-info .person{display:block;font-size:.8rem;color:var(--text-secondary);margin-top:2px}.upcoming-item .join-btn{background:#22c55e;color:#fff;border:none;width:32px;height:32px;border-radius:8px;cursor:pointer;transition:transform .2s;display:inline-grid;place-items:center;flex-shrink:0}.upcoming-item .join-btn>svg{display:block}.upcoming-item .join-btn:hover{transform:scale(1.1)}.dashboard-main{display:flex;flex-direction:column;gap:24px}.subjects-section{margin-bottom:8px}.subjects-section .section-header h2{margin:0 0 16px;font-size:1.4rem}.subjects-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px}.subject-banner-card{position:relative;border-radius:16px;overflow:hidden;height:200px;cursor:pointer;transition:transform .3s cubic-bezier(.4,0,.2,1),box-shadow .3s ease;box-shadow:0 4px 16px #0000001f}.subject-banner-card:hover{transform:translateY(-6px) scale(1.02);box-shadow:0 12px 35px #f59e0b33}.subject-banner-card:after{content:"";position:absolute;top:0;left:-100%;width:50%;height:100%;background:linear-gradient(90deg,transparent 0%,rgba(245,158,11,.1) 30%,rgba(255,255,255,.15) 50%,rgba(245,158,11,.1) 70%,transparent 100%);transition:left .6s ease;pointer-events:none;z-index:2}.subject-banner-card:hover:after{left:150%}.subject-banner-card:hover .subject-emoji{animation:emojiPop .5s ease}@keyframes emojiPop{0%{transform:scale(1) rotate(0)}30%{transform:scale(1.3) rotate(-10deg)}60%{transform:scale(1.1) rotate(5deg)}to{transform:scale(1) rotate(0)}}.subject-banner-card.clickable:focus-visible{outline:3px solid #f59e0b;outline-offset:2px}.subject-banner-image{position:absolute;inset:0}.subject-banner-image img{width:100%;height:100%;object-fit:cover}.subject-banner-fallback{display:none;width:100%;height:100%;background:linear-gradient(135deg,var(--subject-color, #f59e0b) 0%,color-mix(in srgb,var(--subject-color, #f59e0b),#000 25%) 100%);align-items:center;justify-content:center}.subject-banner-fallback.visible{display:flex}.subject-banner-icon{font-size:4rem;opacity:.3}.subject-banner-overlay{position:absolute;inset:0;background:linear-gradient(to top,#000000d9,#0006,#0000001a)}.subject-banner-content{position:absolute;inset:0;padding:16px;display:flex;flex-direction:column;justify-content:flex-end;z-index:1;color:#fff}.subject-banner-top{position:absolute;top:12px;left:12px;right:12px;display:flex;justify-content:space-between;align-items:center}.subject-emoji{font-size:1.8rem;filter:drop-shadow(0 2px 4px rgba(0,0,0,.4))}.subject-enrollment-badge{background:#fff3;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);padding:4px 10px;border-radius:12px;font-size:.8rem;font-weight:500}.subject-banner-title{margin:0 0 4px;font-size:1.25rem;font-weight:700;text-shadow:0 2px 8px rgba(0,0,0,.5);line-height:1.3}.subject-banner-desc{margin:0 0 8px;font-size:.85rem;opacity:.85;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.subject-banner-meta{display:flex;gap:12px;font-size:.8rem;opacity:.75}.subject-teacher,.subject-levels{display:flex;align-items:center;gap:4px}.selected-day-section{background:var(--surface-color);border-radius:16px;padding:24px;box-shadow:var(--shadow)}.section-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}.section-header h2{margin:0;font-size:1.25rem;color:var(--text-primary)}.lesson-count{font-size:.9rem;color:var(--text-secondary);background:var(--surface-hover);padding:6px 12px;border-radius:20px}.no-lessons-card{text-align:center;padding:40px;color:var(--text-tertiary)}.no-lessons-card .icon{font-size:3rem;display:block;margin-bottom:12px}.day-lessons-list{display:flex;flex-direction:column;gap:16px}.lesson-card-detailed{display:flex;gap:20px;padding:20px;background:var(--surface-secondary);border-radius:12px;border-left:4px solid #f59e0b;cursor:pointer;transition:all .2s}.lesson-card-detailed:hover{background:var(--surface-hover);transform:translateY(-2px);box-shadow:var(--shadow-md)}.lesson-time-block{min-width:70px;text-align:center;padding:8px;background:var(--surface-color);border-radius:8px}.lesson-time-block .start-time{display:block;font-size:1.1rem;font-weight:700;color:var(--text-primary)}.lesson-time-block .duration{display:block;font-size:.75rem;color:var(--text-secondary)}.lesson-content{flex:1}.lesson-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:8px}.lesson-header h3{margin:0;font-size:1.1rem;color:var(--text-primary)}.status-badge{font-size:.75rem;padding:4px 10px;border-radius:12px;color:#fff;font-weight:500;white-space:nowrap;display:inline-flex;align-items:center;gap:4px;line-height:1}.status-badge>svg{flex-shrink:0}.subject-info{font-size:.9rem;color:var(--text-secondary);margin:0 0 8px}.lesson-participants{margin-bottom:8px}.group-info,.person-info{font-size:.85rem;color:var(--text-secondary)}.lesson-description{font-size:.85rem;color:var(--text-secondary);margin:8px 0 0;line-height:1.4}.lesson-actions{display:flex;flex-direction:column;gap:8px;min-width:140px}.action-btn{padding:10px 16px;border:none;border-radius:8px;font-weight:500;cursor:pointer;transition:all .2s;font-size:.85rem}.action-btn.join{background:linear-gradient(135deg,#22c55e,#16a34a);color:#fff}.action-btn.join:hover{transform:translateY(-2px);box-shadow:0 4px 12px #22c55e4d}.action-btn.details{background:var(--border-color);color:var(--text-secondary)}.action-btn.details:hover{background:#d1d5db}.history-section{background:var(--surface-color);border-radius:16px;box-shadow:var(--shadow);overflow:hidden}.tabs-header{display:flex;border-bottom:1px solid var(--border-color)}.tabs-header button{flex:1;padding:16px;border:none;background:transparent;font-weight:500;color:var(--text-secondary);cursor:pointer;transition:all .2s;border-bottom:2px solid transparent}.tabs-header button:hover{color:var(--text-primary);background:var(--surface-secondary)}.tabs-header button.active{color:#f59e0b;border-bottom-color:#f59e0b}.tab-content{padding:20px;max-height:400px;overflow-y:auto}.history-list,.upcoming-full-list{display:flex;flex-direction:column;gap:12px}.no-history{text-align:center;color:var(--text-tertiary);padding:40px}.history-item,.upcoming-full-item{display:flex;align-items:center;gap:16px;padding:14px;background:var(--surface-secondary);border-radius:10px;cursor:pointer;transition:all .2s}.history-item:hover,.upcoming-full-item:hover{background:var(--surface-hover);transform:translate(6px);box-shadow:-3px 0 #f59e0b}.history-date,.upcoming-full-date{min-width:50px;text-align:center}.history-date .day,.upcoming-full-date .day{display:block;font-size:1.3rem;font-weight:700;color:var(--text-primary)}.history-date .month,.upcoming-full-date .month{display:block;font-size:.7rem;color:var(--text-secondary);text-transform:uppercase}.upcoming-full-date .weekday{display:block;font-size:.7rem;color:var(--text-tertiary);text-transform:uppercase}.history-info,.upcoming-full-info{flex:1;min-width:0}.history-info h4,.upcoming-full-info h4{margin:0;font-size:1rem;color:var(--text-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.history-info p,.upcoming-full-info .bottom-row{margin:4px 0 0;font-size:.85rem;color:var(--text-secondary)}.upcoming-full-info .top-row{display:flex;align-items:center;gap:12px}.upcoming-full-info .time{font-weight:600;color:#f59e0b}.upcoming-full-info .bottom-row{display:flex;gap:12px;flex-wrap:wrap}.upcoming-full-info .subject,.upcoming-full-info .group,.upcoming-full-info .person,.upcoming-full-info .duration{font-size:.8rem}.group-tag,.person-tag{display:inline-block;font-size:.75rem;background:var(--border-color);padding:2px 8px;border-radius:4px;margin-top:4px}.history-summary{opacity:.6}.quick-join{background:#22c55e;color:#fff;border:none;width:36px;height:36px;border-radius:8px;cursor:pointer;transition:transform .2s;display:inline-grid;place-items:center;flex-shrink:0}.quick-join>svg{display:block}.quick-join:hover{transform:scale(1.1)}.lesson-modal-overlay{position:fixed;inset:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:1000;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.lesson-modal{background:var(--surface-color);border-radius:16px;width:90%;max-width:600px;max-height:90vh;overflow:hidden;position:relative;box-shadow:var(--shadow-xl)}.close-modal{position:absolute;top:16px;right:16px;background:#fff3;border:none;width:32px;height:32px;border-radius:50%;cursor:pointer;font-size:1.2rem;color:#fff;z-index:1;transition:background .2s}.close-modal:hover{background:#ffffff4d}.modal-header{background:linear-gradient(135deg,#f59e0b,#d97706);padding:24px;border-left:6px solid}.modal-header h2{margin:0 0 12px;color:#fff;font-size:1.4rem}.modal-header .status-badge{background:#fff3!important}.modal-content{padding:24px;max-height:50vh;overflow-y:auto}.info-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-bottom:24px}.info-item{display:flex;flex-direction:column;gap:4px}.info-item .label{font-size:.8rem;color:var(--text-secondary)}.info-item .value{font-weight:500;color:var(--text-primary)}.person-card{background:var(--surface-secondary);padding:16px;border-radius:12px;margin-bottom:16px}.person-card h4{margin:0 0 12px;font-size:.9rem;color:var(--text-secondary)}.person-details,.group-details{display:flex;flex-direction:column;gap:4px}.person-details .name,.group-details .group-name{font-weight:600;color:var(--text-primary);font-size:1.1rem}.person-details 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