@import "https://fonts.googleapis.com/css2?family=Noto+Serif+SC:wght@400;600;700;900&family=Noto+Sans+SC:wght@300;400;500;700&display=swap";
*,:before,:after,::backdrop{--tw-border-spacing-x:0;--tw-border-spacing-y:0;--tw-translate-x:0;--tw-translate-y:0;--tw-rotate:0;--tw-skew-x:0;--tw-skew-y:0;--tw-scale-x:1;--tw-scale-y:1;--tw-pan-x: ;--tw-pan-y: ;--tw-pinch-zoom: ;--tw-scroll-snap-strictness:proximity;--tw-gradient-from-position: ;--tw-gradient-via-position: ;--tw-gradient-to-position: ;--tw-ordinal: ;--tw-slashed-zero: ;--tw-numeric-figure: ;--tw-numeric-spacing: ;--tw-numeric-fraction: ;--tw-ring-inset: ;--tw-ring-offset-width:0px;--tw-ring-offset-color:#fff;--tw-ring-color:#3b82f680;--tw-ring-offset-shadow:0 0 #0000;--tw-ring-shadow:0 0 #0000;--tw-shadow:0 0 #0000;--tw-shadow-colored:0 0 #0000;--tw-blur: ;--tw-brightness: ;--tw-contrast: ;--tw-grayscale: ;--tw-hue-rotate: ;--tw-invert: ;--tw-saturate: ;--tw-sepia: ;--tw-drop-shadow: ;--tw-backdrop-blur: ;--tw-backdrop-brightness: ;--tw-backdrop-contrast: ;--tw-backdrop-grayscale: ;--tw-backdrop-hue-rotate: ;--tw-backdrop-invert: ;--tw-backdrop-opacity: ;--tw-backdrop-saturate: ;--tw-backdrop-sepia: ;--tw-contain-size: ;--tw-contain-layout: ;--tw-contain-paint: ;--tw-contain-style: }*,:before,:after{box-sizing:border-box;border:0 solid #e5e7eb}:before,:after{--tw-content:""}html,:host{-webkit-text-size-adjust:100%;tab-size:4;font-feature-settings:normal;font-variation-settings:normal;-webkit-tap-highlight-color:transparent;font-family:ui-sans-serif,system-ui,sans-serif,Apple Color Emoji,Segoe UI Emoji,Segoe UI Symbol,Noto Color Emoji;line-height:1.5}body{line-height:inherit;margin:0}hr{height:0;color:inherit;border-top-width:1px}abbr:where([title]){-webkit-text-decoration:underline dotted;text-decoration:underline dotted}h1,h2,h3,h4,h5,h6{font-size:inherit;font-weight:inherit}a{color:inherit;-webkit-text-decoration:inherit;text-decoration:inherit}b,strong{font-weight:bolder}code,kbd,samp,pre{font-feature-settings:normal;font-variation-settings:normal;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,Courier 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var(--tw-brightness) var(--tw-contrast) var(--tw-grayscale) var(--tw-hue-rotate) var(--tw-invert) var(--tw-saturate) var(--tw-sepia) var(--tw-drop-shadow)}.transition{transition-property:color,background-color,border-color,text-decoration-color,fill,stroke,opacity,box-shadow,transform,filter,-webkit-backdrop-filter,backdrop-filter;transition-duration:.15s;transition-timing-function:cubic-bezier(.4,0,.2,1)}:root{--bg-main:#090c15;--bg-card:#121826d9;--border-color:#ffffff1a;--accent-green:#10b981;--accent-gold:#f59e0b;--text-primary:#f3f4f6;--text-muted:#9ca3af;--foreground:#f3f4f6;--background:#090c15}body{background-color:var(--background);color:var(--foreground);min-height:100vh;font-family:Noto Sans SC,system-ui,sans-serif}:root{--bg-main:#090c15;--bg-card:#121826d9;--border-color:#ffffff1a;--accent-green:#10b981;--accent-gold:#f59e0b;--text-primary:#f3f4f6;--text-muted:#9ca3af}*{box-sizing:border-box;margin:0;padding:0;font-family:Noto Sans SC,system-ui,sans-serif}body{background-color:var(--bg-main);color:var(--text-primary);min-height:100vh}.teacher-header{border-bottom:1px solid var(--border-color);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:#0d111af2;justify-content:space-between;align-items:center;height:70px;padding:0 32px;display:flex}.header-left{align-items:center;gap:16px;display:flex}.teacher-badge{color:#fff;align-items:center;gap:10px;font-family:Noto Serif SC,serif;font-size:1.25rem;font-weight:700;display:flex}.subtitle-tag{color:var(--accent-green);background:#10b9811f;border:1px solid #10b9814d;border-radius:20px;padding:4px 12px;font-size:.85rem}.header-right{gap:12px;display:flex}.btn{cursor:pointer;border:1px solid #0000;border-radius:8px;align-items:center;gap:8px;padding:10px 18px;font-size:.9rem;font-weight:600;transition:all .2s;display:inline-flex}.btn-primary{color:#fff;background:linear-gradient(135deg,#059669,#10b981);box-shadow:0 4px 15px #10b9814d}.btn-gold{color:#fff;background:linear-gradient(135deg,#d97706,#f59e0b);box-shadow:0 4px 15px #f59e0b4d}.btn-secondary{color:var(--text-primary);border-color:var(--border-color);background:#ffffff0f}.btn:hover{transform:translateY(-1px)}.teacher-home-box{max-width:900px;margin:60px auto 0;padding:0 24px}.hero-banner{text-align:center;margin-bottom:36px}.hero-banner h1{background:linear-gradient(90deg,#fff,#6ee7b7);-webkit-text-fill-color:transparent;-webkit-background-clip:text;margin-bottom:12px;font-family:Noto Serif SC,serif;font-size:2.2rem;font-weight:700}.hero-banner p{color:var(--text-muted);font-size:1rem;line-height:1.6}.search-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:16px;padding:32px;box-shadow:0 20px 40px #0006}.input-row{gap:12px;margin-bottom:24px;display:flex}.main-teacher-input{color:#fff;background:#080b14cc;border:2px solid #10b98166;border-radius:12px;outline:none;flex-grow:1;padding:16px 20px;font-size:1.05rem;transition:all .2s}.main-teacher-input:focus{border-color:#10b981;box-shadow:0 0 15px #10b9814d}.btn-sparkle-submit{color:#fff;cursor:pointer;white-space:nowrap;background:linear-gradient(135deg,#059669,#10b981);border:none;border-radius:12px;align-items:center;gap:10px;padding:0 28px;font-size:1.05rem;font-weight:700;display:inline-flex;box-shadow:0 6px 20px #10b98166}.btn-sparkle-submit:hover{transform:translateY(-2px)}.quick-lessons{margin-bottom:24px}.quick-label{color:var(--text-muted);align-items:center;gap:6px;margin-bottom:10px;font-size:.85rem;display:flex}.quick-tags{flex-wrap:wrap;gap:10px;display:flex}.quick-btn{border:1px solid var(--border-color);color:var(--text-primary);cursor:pointer;background:#ffffff0d;border-radius:8px;align-items:center;gap:6px;padding:8px 14px;transition:all .2s;display:flex}.quick-btn:hover{background:#10b98126;border-color:#10b98166}.quick-btn small{color:var(--text-muted);font-size:.75rem}.options-grid{border-top:1px solid var(--border-color);grid-template-columns:1fr 1fr;gap:16px;padding-top:20px;display:grid}.option-item{align-items:center;gap:10px;display:flex}.option-item label{color:var(--text-muted);white-space:nowrap;font-size:.9rem}.option-item select{border:1px solid var(--border-color);color:#fff;background:#ffffff0d;border-radius:8px;outline:none;flex-grow:1;padding:8px 12px}.teacher-workspace{height:calc(100vh - 70px);display:flex}.teacher-sidebar{border-right:1px solid var(--border-color);background:#0c101af2;flex-direction:column;width:300px;display:flex}.tab-buttons{border-bottom:1px solid var(--border-color);flex-direction:column;gap:8px;padding:16px;display:flex}.tab-btn{color:var(--text-muted);cursor:pointer;text-align:left;background:0 0;border:1px solid #0000;border-radius:10px;align-items:center;gap:10px;padding:12px 16px;font-size:.95rem;display:flex}.tab-btn.active{color:#fff;background:#10b98126;border-color:#10b9814d;font-weight:600}.slides-scroll-list{flex-direction:column;flex-grow:1;gap:10px;padding:16px;display:flex;overflow-y:auto}.slide-card-item{border:1px solid var(--border-color);cursor:pointer;background:#ffffff08;border-radius:8px;padding:12px;transition:all .2s}.slide-card-item.selected{border-color:var(--accent-green);background:#10b9811a}.card-top{color:var(--text-muted);justify-content:space-between;margin-bottom:6px;font-size:.75rem;display:flex}.card-title{color:#fff;font-size:.9rem;font-weight:600}.img-badge{color:var(--accent-green);align-items:center;gap:4px;margin-top:6px;font-size:.7rem;display:flex}.teacher-main-view{flex-grow:1;justify-content:center;padding:24px;display:flex;overflow-y:auto}.canvas-wrapper{width:100%;max-width:900px}.real-slide-canvas{aspect-ratio:16/9;background:#0f172a;border-radius:12px;width:100%;margin-bottom:20px;overflow:hidden;box-shadow:0 15px 35px #00000080}.slide-content-box{flex-direction:column;width:100%;height:100%;padding:40px 50px;display:flex}.slide-content-box.theme-green{--preview-accent:#10b981;background-color:#062319}.slide-content-box.theme-purple{--preview-accent:#a855f7;background-color:#1e1b4b}.slide-content-box.theme-orange{--preview-accent:#f97316;background-color:#2a1708}.slide-content-box.theme-gray{--preview-accent:#94a3b8;background-color:#0f172a}.layout-preview-title{text-align:center;flex-direction:column;justify-content:center;align-items:center;height:100%;padding:40px;display:flex}.layout-preview-title h1{color:#fff;margin-bottom:16px;font-family:Noto Serif SC,serif;font-size:2.3rem;font-weight:700}.title-divider{background:var(--preview-accent,#10b981);border-radius:2px;width:120px;height:4px;margin-bottom:20px}.layout-preview-title p{color:#e5e7eb;max-width:80%;font-size:1.15rem;line-height:1.6}.preview-split-grid{flex-grow:1;grid-template-columns:1fr 1fr;gap:20px;display:grid}.split-card-box{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-left:4px solid var(--preview-accent,#10b981);background:#ffffff14;border-radius:8px;padding:20px;font-size:1rem;line-height:1.7}.preview-focus-box{text-align:center;background:#ffffff0d;border-radius:12px;flex-direction:column;flex-grow:1;justify-content:center;align-items:center;padding:30px;display:flex}.big-highlight-text{color:var(--preview-accent,#10b981);margin-bottom:16px;font-family:Noto Serif SC,serif;font-size:2.2rem;font-weight:800}.sub-highlight-desc{color:#e5e7eb;font-size:1.1rem;line-height:1.6}.accent-bar{background:var(--preview-accent,#10b981);border-radius:2px;width:60px;height:4px;margin-bottom:24px}.canvas-body li{align-items:flex-start;gap:12px;font-size:1.1rem;line-height:1.6;display:flex}.canvas-body .dot{background:var(--preview-accent,#10b981);border-radius:50%;flex-shrink:0;width:8px;height:8px;margin-top:10px}.teacher-notes-panel{background:var(--bg-card);border:1px solid var(--border-color);border-radius:12px;padding:16px 20px}.notes-title{color:var(--accent-green);align-items:center;gap:8px;margin-bottom:8px;font-size:.9rem;font-weight:600;display:flex}.notes-content{color:var(--text-primary);font-size:.9rem;line-height:1.6}.syllabus-card,.video-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:16px;width:100%;max-width:800px;padding:32px}.syllabus-card h2,.video-card h2{margin-bottom:6px;font-family:Noto Serif SC,serif;font-size:1.6rem}.syllabus-card .subtitle{color:var(--text-muted);margin-bottom:24px;font-size:.9rem}.syllabus-section{border-bottom:1px solid #ffffff0d;margin-bottom:20px;padding-bottom:16px}.syllabus-section h3{color:var(--accent-green);margin-bottom:8px;font-size:1.05rem}.syllabus-section p{color:var(--text-primary);line-height:1.6}.main-video-player{border-radius:12px;width:100%;margin:16px 0}.teacher-quick-edit{border-left:1px solid var(--border-color);background:#0c101af2;width:280px;padding:20px}.teacher-quick-edit h3{margin-bottom:16px;font-size:.95rem}.edit-group{margin-bottom:16px}.edit-group label{color:var(--text-muted);margin-bottom:6px;font-size:.8rem;display:block}.edit-group input,.edit-group textarea{border:1px solid var(--border-color);color:#fff;background:#ffffff0d;border-radius:6px;width:100%;padding:8px;font-size:.85rem}.toast-floating{color:#fff;z-index:999;background:#10b981e6;border-radius:30px;padding:12px 24px;font-weight:600;position:fixed;bottom:30px;right:30px;box-shadow:0 10px 25px #0000004d}.library-modal-overlay{z-index:1000;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);background:#000000b3;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.library-modal{background:var(--bg-card,#1e293b);border-radius:12px;flex-direction:column;width:90%;max-width:800px;max-height:85vh;display:flex;overflow:hidden;box-shadow:0 20px 40px #00000080}.library-header{border-bottom:1px solid #ffffff1a;justify-content:space-between;align-items:center;padding:20px 24px;display:flex}.library-header h2{align-items:center;gap:10px;margin:0;font-size:1.25rem;display:flex}.library-header .close-btn{color:#fff;cursor:pointer;background:0 0;border:none;font-size:1.5rem}.library-content{flex-grow:1;padding:24px;overflow-y:auto}.empty-state{text-align:center;color:#94a3b8;padding:60px 0;font-size:1.1rem}.lesson-grid{grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px;display:grid}.lesson-card{cursor:pointer;background:#ffffff0d;border:1px solid #ffffff1a;border-radius:8px;justify-content:space-between;align-items:center;padding:16px;transition:all .2s;display:flex}.lesson-card:hover{border-color:var(--accent-green,#10b981);background:#ffffff1a;transform:translateY(-2px)}.lesson-info h3{margin:0 0 6px;font-size:1.1rem;font-weight:600}.lesson-meta{color:#94a3b8;font-size:.85rem}.lesson-actions .delete-btn{color:#ef4444;cursor:pointer;background:#ef44441a;border:1px solid #ef444433;border-radius:6px;justify-content:center;align-items:center;width:32px;height:32px;transition:all .2s;display:flex}.lesson-actions .delete-btn:hover{color:#fff;background:#ef4444}