@import"https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&display=swap";:root{--bg-primary: #0f0f23;--bg-secondary: #1a1a2e;--bg-card: #16213e;--bg-card-hover: #1a2744;--bg-glass: rgba(255, 255, 255, .05);--bg-glass-strong: rgba(255, 255, 255, .08);--bg-surface: #f8fafc;--bg-surface-alt: #f1f5f9;--text-primary: #e2e8f0;--text-secondary: #94a3b8;--text-muted: #64748b;--text-dark: #1e293b;--text-dark-secondary: #475569;--accent: #6366f1;--accent-hover: #818cf8;--accent-glow: rgba(99, 102, 241, .3);--accent-soft: rgba(99, 102, 241, .1);--green: #10b981;--green-soft: rgba(16, 185, 129, .15);--red: #ef4444;--red-soft: rgba(239, 68, 68, .15);--yellow: #f59e0b;--yellow-soft: rgba(245, 158, 11, .15);--blue: #3b82f6;--cyan: #06b6d4;--border: rgba(255, 255, 255, .08);--border-light: #e2e8f0;--radius: 12px;--radius-sm: 8px;--radius-lg: 16px;--radius-xl: 24px;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .12);--shadow: 0 4px 12px rgba(0, 0, 0, .15);--shadow-lg: 0 8px 30px rgba(0, 0, 0, .2);--shadow-glow: 0 0 40px var(--accent-glow);--font: "Inter", -apple-system, BlinkMacSystemFont, sans-serif}[data-theme=dark]{--bg-surface: #111827;--bg-surface-alt: #1f2937;--text-dark: #f1f5f9;--text-dark-secondary: #cbd5e1;--text-muted: #94a3b8;--border-light: #374151;--accent-soft: rgba(99, 102, 241, .2);--shadow-sm: 0 1px 3px rgba(0, 0, 0, .4);--shadow: 0 4px 12px rgba(0, 0, 0, .5);--shadow-lg: 0 8px 30px rgba(0, 0, 0, .6)}[data-theme=dark] body{background:#0f172a;color:#f1f5f9}[data-theme=dark] .app-header{background:#111827;border-bottom-color:#1f2937}[data-theme=dark] .card,[data-theme=dark] .course-card,[data-theme=dark] .timetable-wrapper{background:#1e293b;border-color:#374151}[data-theme=dark] .input,[data-theme=dark] .search-input{background:#1e293b;border-color:#374151;color:#f1f5f9}[data-theme=dark] .search-results{background:#1e293b;border-color:#374151}[data-theme=dark] .search-result-item:hover,[data-theme=dark] .search-result-item.selected{background:#6366f126}[data-theme=dark] .search-result-item{border-bottom-color:#374151}[data-theme=dark] .search-kbd{background:#374151;border-color:#4b5563;color:#94a3b8}[data-theme=dark] .filter-select{background-color:#1e293b;border-color:#374151;color:#cbd5e1}[data-theme=dark] .btn-ghost{color:#cbd5e1;border-color:#374151}[data-theme=dark] .btn-ghost:hover{background:#374151;border-color:#4b5563}[data-theme=dark] .timetable-cell{border-bottom-color:#1f2937;border-right-color:#1a2332}[data-theme=dark] .timetable-time{background:#111827;border-right-color:#374151;color:#94a3b8}[data-theme=dark] .friend-item{border-bottom-color:#1f2937}[data-theme=dark] .friend-item:hover{background:#1f2937}[data-theme=dark] .modal{background:#1e293b}[data-theme=dark] .overlay{background:#000000b3}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font);background:var(--bg-surface);color:var(--text-dark);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow-x:hidden}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--text-muted);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--text-dark-secondary)}.glass{background:var(--bg-glass);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border:1px solid var(--border)}.glass-strong{background:var(--bg-glass-strong);backdrop-filter:blur(30px);-webkit-backdrop-filter:blur(30px);border:1px solid rgba(255,255,255,.12)}.card{background:#fff;border-radius:var(--radius);border:1px solid var(--border-light);box-shadow:var(--shadow-sm)}.card-hover{transition:all .2s ease}.card-hover:hover{box-shadow:var(--shadow);transform:translateY(-1px)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 20px;border-radius:var(--radius-sm);font-weight:600;font-size:14px;border:none;cursor:pointer;transition:all .2s ease;font-family:var(--font);text-decoration:none}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{background:var(--accent-hover);box-shadow:var(--shadow-glow)}.btn-ghost{background:transparent;color:var(--text-dark-secondary);border:1px solid var(--border-light)}.btn-ghost:hover{background:var(--bg-surface-alt);border-color:var(--text-muted)}.btn-danger{background:var(--red-soft);color:var(--red)}.btn-danger:hover{background:var(--red);color:#fff}.btn-success{background:var(--green-soft);color:var(--green)}.btn-success:hover{background:var(--green);color:#fff}.btn-sm{padding:6px 12px;font-size:12px}.btn-lg{padding:14px 28px;font-size:16px;border-radius:var(--radius)}.input{width:100%;padding:10px 14px;border-radius:var(--radius-sm);border:1.5px solid var(--border-light);font-size:14px;font-family:var(--font);color:var(--text-dark);background:#fff;transition:all .2s ease;outline:none}.input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}.input::-moz-placeholder{color:var(--text-muted)}.input::placeholder{color:var(--text-muted)}.select{-webkit-appearance:none;-moz-appearance:none;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%2364748b' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;padding-right:32px}.badge{display:inline-flex;align-items:center;gap:4px;padding:3px 10px;border-radius:100px;font-size:11px;font-weight:600;letter-spacing:.02em}.badge-accent{background:var(--accent-soft);color:var(--accent)}.badge-green{background:var(--green-soft);color:var(--green)}.badge-red{background:var(--red-soft);color:var(--red)}.badge-yellow{background:var(--yellow-soft);color:var(--yellow)}.overlay{position:fixed;inset:0;background:#00000080;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;padding:16px;z-index:50;animation:fadeIn .2s ease}.modal{background:#fff;border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);max-width:600px;width:100%;max-height:90vh;overflow-y:auto;animation:slideUp .3s ease}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}.spinner{width:20px;height:20px;border:2.5px solid var(--border-light);border-top-color:var(--accent);border-radius:50%;animation:spin .6s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.avatar{width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:16px;color:#fff;flex-shrink:0}.avatar-sm{width:32px;height:32px;font-size:13px}.avatar-lg{width:56px;height:56px;font-size:22px}.login-bg{min-height:100vh;background:linear-gradient(135deg,var(--bg-primary) 0%,#1e1b4b 50%,var(--bg-secondary) 100%);display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden}.desktop-meme-container{display:none}.mobile-meme-container{display:block}@media(min-width:1024px){.login-bg.has-meme{gap:60px}.desktop-meme-container{display:block;width:380px;z-index:10}.mobile-meme-container{display:none}}.login-bg:before{content:"";position:absolute;width:600px;height:600px;background:radial-gradient(circle,var(--accent-glow) 0%,transparent 70%);top:-200px;right:-100px;pointer-events:none}.login-bg:after{content:"";position:absolute;width:400px;height:400px;background:radial-gradient(circle,rgba(6,182,212,.15) 0%,transparent 70%);bottom:-100px;left:-50px;pointer-events:none}.login-card{position:relative;z-index:1;max-width:420px;width:100%;padding:48px 40px;border-radius:var(--radius-xl);text-align:center}.app-layout{min-height:100vh;display:flex;flex-direction:column}.app-header{background:#fff;border-bottom:1px solid var(--border-light);padding:12px 24px;display:flex;align-items:center;justify-content:space-between;gap:16px;position:sticky;top:0;z-index:30}.main-panel{flex:1;padding:24px;min-width:0;max-width:1200px;margin:0 auto;width:100%}.timetable-wrapper{background:#fff;border-radius:var(--radius);border:1px solid var(--border-light);box-shadow:var(--shadow-sm);overflow:hidden}.timetable-grid{display:grid;grid-template-columns:64px repeat(5,1fr);position:relative}.timetable-header{background:linear-gradient(135deg,var(--bg-primary),#1e1b4b);color:#fff;padding:12px 8px;font-weight:600;font-size:13px;text-align:center;letter-spacing:.03em}.timetable-time{padding:0 8px;font-size:11px;font-weight:600;color:var(--text-muted);display:flex;align-items:center;justify-content:center;background:var(--bg-surface);border-right:1px solid var(--border-light)}.timetable-cell{height:60px;border-bottom:1px solid #f1f5f9;border-right:1px solid #f8fafc}.course-block{position:absolute;border-radius:8px;padding:4px 8px;display:flex;flex-direction:column;justify-content:center;align-items:center;overflow:hidden;cursor:default;transition:transform .15s ease,box-shadow .15s ease;z-index:10;box-shadow:0 2px 8px #00000026}.course-block:hover{transform:scale(1.02);box-shadow:0 4px 16px #0003;z-index:20}.course-block-name{font-weight:700;font-size:11px;text-align:center;color:#fff;text-shadow:0 1px 2px rgba(0,0,0,.3);line-height:1.2}.course-block-code{font-size:9px;color:#ffffffd9;text-shadow:0 1px 2px rgba(0,0,0,.3);margin-top:1px}.course-block-time{font-size:9px;color:#ffffffbf;margin-top:1px}.search-container{position:relative}.search-input{width:100%;padding:12px 16px 12px 44px;border-radius:var(--radius);border:1.5px solid var(--border-light);font-size:14px;font-family:var(--font);color:var(--text-dark);background:#fff;transition:all .2s ease;outline:none}.search-input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft),var(--shadow)}.search-icon{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:var(--text-muted);font-size:16px;pointer-events:none}.search-kbd{position:absolute;right:12px;top:50%;transform:translateY(-50%);background:var(--bg-surface-alt);color:var(--text-muted);padding:2px 8px;border-radius:4px;font-size:11px;font-weight:600;font-family:var(--font);border:1px solid var(--border-light)}.search-results{position:absolute;top:calc(100% + 4px);left:0;right:0;background:#fff;border:1px solid var(--border-light);border-radius:var(--radius);box-shadow:var(--shadow-lg);max-height:400px;overflow-y:auto;z-index:40;animation:slideUp .15s ease}.search-result-item{padding:12px 16px;cursor:pointer;border-bottom:1px solid #f8fafc;transition:background .1s ease}.search-result-item:hover,.search-result-item.selected{background:var(--accent-soft)}.search-result-item:last-child{border-bottom:none}.filter-bar{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:12px}.filter-select{padding:7px 32px 7px 12px;border-radius:100px;border:1px solid var(--border-light);font-size:12px;font-weight:500;font-family:var(--font);color:var(--text-dark-secondary);background:#fff;cursor:pointer;transition:all .2s;outline:none;-webkit-appearance:none;-moz-appearance:none;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10' fill='%2364748b' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 10px center}.filter-select:focus{border-color:var(--accent);box-shadow:0 0 0 2px var(--accent-soft)}.course-card{padding:16px;border-radius:var(--radius);border:1px solid var(--border-light);background:#fff;transition:all .2s ease;position:relative;overflow:hidden}.course-card:before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px}.course-card:hover{box-shadow:var(--shadow)}.friend-item{display:flex;align-items:center;gap:12px;padding:12px 16px;border-bottom:1px solid #f8fafc;cursor:pointer;transition:background .15s}.friend-item:hover{background:var(--bg-surface)}@media(max-width:768px){.app-header{padding:10px 16px}.main-panel{padding:16px}.timetable-grid{grid-template-columns:48px repeat(5,1fr)}.timetable-header{font-size:11px;padding:8px 4px}.login-card{padding:32px 24px}}