[data-theme=dark],:root{--bg-primary: #0D0D0D;--bg-surface: #161616;--bg-elevated: #1F1F1F;--bg-subtle: #2A2A2A;--bg-secondary: #161616;--bg-card: #161616;--bg-card-hover:#1F1F1F;--bg-input: #1A1A1A;--text-primary: #F5F5F5;--text-secondary: #A3A3A3;--text-muted: #525252;--text-on-red: #FFFFFF;--border-default: #2A2A2A;--border-strong: #3A3A3A;--border: #2A2A2A;--border-hover: #3A3A3A;--border-red: rgba(200,16,46,.4);--border-red-soft:rgba(200,16,46,.2);--mod-vocab: #0F1E3D;--mod-grammar: #140E26;--mod-listening: #071A1A;--mod-speaking: #180B24;--mod-writing: #1A1A1A;--mod-selt: #1A0A00;--streak-bg: #1A1400;--streak-text: #F5F5F5;--streak-sub: #525252;--nav-bg: #0D0D0D;--nav-border: #1F1F1F;--nav-inactive: #525252;--input-bg: #1A1A1A;--input-border: #2A2A2A;--skeleton-base: #1F1F1F;--skeleton-shine: #2A2A2A;--card-mod-text: #F5F5F5}[data-theme=light]{--bg-primary: #F4F4F4;--bg-surface: #FFFFFF;--bg-elevated: #FFFFFF;--bg-subtle: #E5E7EB;--bg-secondary: #FFFFFF;--bg-card: 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rgba(200,16,46,.3);--shadow-red-lg: 0 8px 32px rgba(200,16,46,.5);--shadow-gold: 0 4px 16px rgba(245,166,35,.25);--glow-red: 0 0 24px rgba(200,16,46,.25);--font-sans: "Inter", system-ui, -apple-system, sans-serif;--font-display: "Plus Jakarta Sans", "Inter", system-ui, sans-serif;--font-mono: "JetBrains Mono", "Courier New", monospace;--transition: .2s ease;--transition-slow: .4s ease;--transition-spring:.3s cubic-bezier(.34,1.56,.64,1)}html.theme-transitioning *,html.theme-transitioning *:before,html.theme-transitioning *:after{transition:background-color .25s ease,color .2s ease,border-color .2s 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var(--transition);cursor:pointer;border:none;white-space:nowrap;position:relative;overflow:hidden;font-family:var(--font-sans)}.btn-primary{background:var(--grad-red);color:#fff;box-shadow:var(--shadow-red)}.btn-primary:hover{background:var(--grad-red-hover);box-shadow:var(--shadow-red-lg);transform:translateY(-2px)}.btn-primary:active{transform:translateY(0)}.btn-secondary{background:var(--bg-elevated);color:var(--text-primary);border:1px solid var(--border-strong)}.btn-secondary:hover{background:var(--bg-subtle);transform:translateY(-1px)}.btn-ghost{background:transparent;color:var(--text-secondary)}.btn-ghost:hover{color:var(--text-primary);background:var(--bg-elevated)}.btn-success{background:linear-gradient(135deg,#16a34a,#22c55e);color:#fff;box-shadow:0 4px 16px #22c55e4d}.btn-danger{background:linear-gradient(135deg,#b91c1c,#ef4444);color:#fff}.btn-sm{padding:8px 16px;font-size:.85rem}.btn-lg{padding:16px 32px;font-size:1.05rem;border-radius:var(--r-lg)}.btn-full,.w-full.btn{width:100%}.btn:disabled{opacity:.45;cursor:not-allowed;transform:none!important;box-shadow:none!important}.card{background:var(--bg-surface);border:1px solid var(--border-default);border-radius:var(--r-lg);padding:var(--space-5);transition:all var(--transition)}.card:hover{border-color:var(--border-strong);box-shadow:var(--shadow-md)}.card-clickable{cursor:pointer}.card-clickable:hover{border-color:var(--border-red-soft)}.card-elevated{background:var(--bg-elevated)}.card-glass{background:#16162acc;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border:1px solid rgba(255,255,255,.09)}.card-vocab{background:var(--mod-vocab)}.card-grammar{background:var(--mod-grammar)}.card-listening{background:var(--mod-listening)}.card-speaking{background:var(--mod-speaking)}.card-writing{background:var(--mod-writing)}.card-selt{background:var(--mod-selt)}.voice-card-active{border:2px solid var(--red)!important;background:#c8102e0f!important}.input{width:100%;padding:var(--space-3) var(--space-4);background:var(--input-bg);border:1px solid var(--input-border);border-radius:var(--r-md);color:var(--text-primary);font-size:1rem;transition:all var(--transition);outline:none}.input:focus{border-color:var(--red);box-shadow:0 0 0 3px var(--red-glow);background:var(--bg-elevated)}.input::placeholder{color:var(--text-muted)}.input-label{display:block;font-size:.8rem;font-weight:600;color:var(--text-secondary);margin-bottom:var(--space-2);text-transform:uppercase;letter-spacing:.06em}textarea.input{resize:vertical;min-height:120px}.badge{display:inline-flex;align-items:center;gap:4px;padding:3px 10px;border-radius:var(--r-full);font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em}.badge-red{background:#c8102e2e;color:#e8334a;border:1px solid rgba(200,16,46,.35)}.badge-green{background:#22c55e1f;color:#22c55e;border:1px solid rgba(34,197,94,.3)}.badge-amber{background:#f59e0b1f;color:#f59e0b;border:1px solid rgba(245,158,11,.3)}.badge-blue{background:#3b82f61f;color:#3b82f6;border:1px solid rgba(59,130,246,.3)}.badge-purple{background:#8b5cf61f;color:#8b5cf6;border:1px solid rgba(139,92,246,.3)}.badge-teal{background:#14b8a61f;color:#14b8a6;border:1px solid rgba(20,184,166,.3)}.badge-orange{background:#f973161f;color:#f97316;border:1px solid rgba(249,115,22,.3)}.badge-gray{background:#ffffff12;color:var(--text-secondary);border:1px solid var(--border-default)}.badge-a1{background:#3b82f626;color:#60a5fa;border:1px solid rgba(59,130,246,.3)}.badge-a2{background:#22c55e26;color:#4ade80;border:1px solid rgba(34,197,94,.3)}.badge-b1{background:#8b5cf626;color:#a78bfa;border:1px solid rgba(139,92,246,.3)}.badge-b2{background:#f9731626;color:#fb923c;border:1px solid rgba(249,115,22,.3)}.badge-c1{background:#f59e0b26;color:#fcd34d;border:1px solid rgba(245,158,11,.3)}.level-BEGINNER{color:#95a5a6}.level-ELEMENTARY{color:var(--blue)}.level-PRE_INTERMEDIATE{color:var(--green)}.level-INTERMEDIATE{color:var(--amber)}.level-UPPER_INTERMEDIATE{color:var(--purple)}.bg-level-BEGINNER{background:#95a5a626;border-color:#95a5a659}.bg-level-ELEMENTARY{background:#3b82f61f;border-color:#3b82f64d}.bg-level-PRE_INTERMEDIATE{background:#22c55e1f;border-color:#22c55e4d}.bg-level-INTERMEDIATE{background:#f59e0b1f;border-color:#f59e0b4d}.bg-level-UPPER_INTERMEDIATE{background:#8b5cf61f;border-color:#8b5cf64d}.progress-bar{height:8px;background:var(--bg-subtle);border-radius:var(--r-full);overflow:hidden}.progress-bar-sm{height:4px}.progress-bar-lg{height:12px}.progress-fill{height:100%;border-radius:var(--r-full);transition:width .8s cubic-bezier(.4,0,.2,1);position:relative}.progress-fill:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:linear-gradient(90deg,transparent 0%,rgba(255,255,255,.2) 50%,transparent 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var(--transition);font-size:.6rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;cursor:pointer;border:none;background:none;font-family:var(--font-sans);position:relative}.nav-item:after{content:"";position:absolute;bottom:2px;left:50%;transform:translate(-50%);width:4px;height:4px;border-radius:50%;background:var(--red);opacity:0;transition:opacity var(--transition)}.nav-item.active{color:var(--red)}.nav-item.active:after{opacity:1}.nav-item.active .nav-icon{filter:drop-shadow(0 0 6px rgba(200,16,46,.5))}.nav-item:hover:not(.active){color:var(--text-secondary)}.nav-icon{font-size:1.4rem;line-height:1;transition:transform var(--transition-spring)}.nav-item:active .nav-icon{transform:scale(.88)}.section-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--space-4)}.section-title{font-size:.72rem;font-weight:700;color:var(--text-muted);text-transform:uppercase;letter-spacing:.1em}.divider{height:1px;background:var(--border-default);margin:var(--space-4) 0}.stat-card{background:var(--bg-surface);border:1px solid var(--border-default);border-radius:var(--r-lg);padding:var(--space-4);display:flex;flex-direction:column;gap:var(--space-2);transition:all var(--transition);position:relative;overflow:hidden}.stat-card:before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:var(--grad-red);opacity:0;transition:opacity var(--transition)}.stat-card:hover{border-color:var(--border-strong);box-shadow:var(--shadow-md);transform:translateY(-2px)}.stat-card:hover:before{opacity:1}.stat-value{font-size:1.6rem;font-weight:800;line-height:1}.stat-label{font-size:.72rem;color:var(--text-muted);font-weight:600;text-transform:uppercase;letter-spacing:.05em}.spinner{width:36px;height:36px;border:3px solid rgba(255,255,255,.08);border-top-color:var(--red);border-radius:50%;animation:spin .8s linear infinite}.loading-center{display:flex;align-items:center;justify-content:center;min-height:200px}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000c;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);z-index:1000;display:flex;align-items:center;justify-content:center;padding:var(--space-4);animation:scaleIn .2s ease}.modal-box{background:var(--bg-surface);border:1px solid var(--border-strong);border-radius:var(--r-2xl);width:100%;max-width:440px;max-height:90vh;overflow-y:auto;padding:var(--space-8);box-shadow:0 24px 80px #000c;animation:checkBounce .4s cubic-bezier(.34,1.56,.64,1)}.xp-toast{position:fixed;left:50%;pointer-events:none;z-index:9999;animation:xpFloat 2s ease-out forwards}.xp-toast-inner{display:inline-flex;align-items:center;gap:6px;background:linear-gradient(135deg,#1a1a2ef2,#16162afa);border:1px solid rgba(245,158,11,.4);border-radius:var(--r-full);padding:8px 18px;font-weight:800;color:var(--amber);font-size:1rem;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);box-shadow:0 4px 24px #00000080,0 0 20px #f59e0b33;white-space:nowrap}.feedback-correct{border-color:var(--success)!important;background:var(--green-light)!important}.feedback-incorrect{border-color:var(--error)!important;background:var(--red-err-light)!important;animation:shakeX .5s ease}.check-bounce{animation:checkBounce .45s cubic-bezier(.34,1.56,.64,1)}.flame-icon{display:inline-block;animation:flamePulse 1.5s ease-in-out infinite}.mod-badge-vocab{background:#3b82f633;color:#60a5fa}.mod-badge-grammar{background:#6366f133;color:#a78bfa}.mod-badge-listening{background:#14b8a633;color:#2dd4bf}.mod-badge-speaking{background:#a855f733;color:#c084fc}.mod-badge-selt{background:#f9731633;color:#fb923c}.admin-layout{display:flex;min-height:100vh}.admin-sidebar{width:240px;background:var(--bg-surface);border-right:1px solid var(--border-default);padding:var(--space-6);display:flex;flex-direction:column;gap:var(--space-2);flex-shrink:0}.admin-main{flex:1;padding:var(--space-8);overflow-y:auto;background:var(--bg-primary)}.admin-nav-item{display:flex;align-items:center;gap:var(--space-3);padding:var(--space-3) var(--space-4);border-radius:var(--r-md);color:var(--text-secondary);font-weight:500;cursor:pointer;transition:all var(--transition);border:none;background:none;font-family:var(--font-sans);width:100%;text-align:left;font-size:.9rem}.admin-nav-item:hover{background:var(--bg-elevated);color:var(--text-primary)}.admin-nav-item.active{background:#c8102e14;color:var(--red);font-weight:700;border-left:3px solid var(--red)}.confetti-piece{position:absolute;width:8px;height:8px;border-radius:2px;animation:confettiFall linear forwards}