:root{--font-heading: "Outfit", sans-serif;--font-body: "Inter", sans-serif;--bg-color: #080914;--bg-gradient: radial-gradient(circle at 50% 0%, #151632 0%, #080914 100%);--panel-bg: rgba(17, 18, 36, .7);--panel-hover: rgba(26, 28, 54, .85);--border-color: rgba(255, 255, 255, .07);--border-glow: rgba(99, 102, 241, .2);--text-primary: #f3f4f6;--text-secondary: #9ca3af;--text-muted: #6b7280;--primary: #6366f1;--primary-glow: rgba(99, 102, 241, .4);--primary-hover: #4f46e5;--success: #10b981;--success-glow: rgba(16, 185, 129, .2);--warning: #f59e0b;--warning-glow: rgba(245, 158, 11, .2);--danger: #ef4444;--danger-glow: rgba(239, 68, 68, .2);--card-shadow: 0 8px 32px 0 rgba(0, 0, 0, .37);--glow-shadow: 0 0 20px rgba(99, 102, 241, .15);--font-size-base: 16px;--border-radius: 16px;--border-radius-sm: 8px}[data-theme=light]{--bg-color: #f1f5f9;--bg-gradient: linear-gradient(135deg, #e2e8f0 0%, #f1f5f9 100%);--panel-bg: rgba(255, 255, 255, .85);--panel-hover: rgba(255, 255, 255, .95);--border-color: rgba(0, 0, 0, .08);--border-glow: rgba(79, 70, 229, .1);--text-primary: #0f172a;--text-secondary: #475569;--text-muted: #94a3b8;--primary: #4f46e5;--primary-glow: rgba(79, 70, 229, .2);--primary-hover: #3730a3;--success: #059669;--success-glow: rgba(5, 150, 105, .15);--warning: #d97706;--warning-glow: rgba(217, 119, 6, .15);--danger: #dc2626;--danger-glow: rgba(220, 38, 38, .15);--card-shadow: 0 8px 32px 0 rgba(148, 163, 184, .18);--glow-shadow: 0 0 20px rgba(79, 70, 229, .08)}*{box-sizing:border-box;margin:0;padding:0;-webkit-font-smoothing:antialiased}body{font-family:var(--font-body);background:var(--bg-color);background-image:var(--bg-gradient);color:var(--text-primary);min-height:100vh;overflow-x:hidden;transition:background .3s ease,color .3s ease}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}.app-container{display:flex;flex-direction:column;min-height:100vh;max-width:1200px;margin:0 auto;padding:20px}.glass-panel{background:var(--panel-bg);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid var(--border-color);border-radius:var(--border-radius);box-shadow:var(--card-shadow);padding:24px;transition:border-color .3s ease,box-shadow .3s ease,background .3s ease}.glass-panel:hover{border-color:#6366f126}.app-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px;padding:16px 24px}.logo-section{display:flex;align-items:center;gap:10px}.logo-section svg{color:var(--primary);filter:drop-shadow(0 0 8px var(--primary))}.brand-name{font-family:var(--font-heading);font-size:1.5rem;font-weight:800;letter-spacing:-.5px;background:linear-gradient(135deg,var(--text-primary) 30%,var(--primary) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.navigation-tabs{display:flex;gap:8px}.nav-tab-btn{background:transparent;border:1px solid transparent;color:var(--text-secondary);font-family:var(--font-heading);font-size:.95rem;font-weight:600;padding:10px 18px;border-radius:30px;cursor:pointer;display:flex;align-items:center;gap:8px;transition:all .25s cubic-bezier(.4,0,.2,1)}.nav-tab-btn:hover{background:#ffffff0a;color:var(--text-primary)}.nav-tab-btn.active{background:var(--primary);color:#fff;box-shadow:var(--glow-shadow);transform:translateY(-1px)}.dashboard-grid{display:grid;grid-template-columns:2fr 1fr;gap:24px;margin-bottom:24px}@media (max-width: 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#f43f5e}.stat-num{font-family:var(--font-heading);font-size:2.2rem;font-weight:800;margin-top:8px;color:var(--text-primary)}.stat-label{font-size:.85rem;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.5px;margin-top:4px}.circular-progress-wrap{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:30px 10px;text-align:center}.circular-chart{width:160px;height:160px;filter:drop-shadow(0 0 10px rgba(99,102,241,.2))}.circle-bg{fill:none;stroke:#ffffff0a;stroke-width:2.8}.circle-bar{fill:none;stroke:var(--primary);stroke-width:2.8;stroke-linecap:round;transition:stroke-dasharray .8s ease}.progress-text{font-family:var(--font-heading);font-size:.55rem;font-weight:800;fill:var(--text-primary);text-anchor:middle}.recommendation-panel{display:flex;flex-direction:column;gap:16px}.rec-item{display:flex;align-items:center;justify-content:space-between;padding:16px;background:#ffffff05;border:1px solid 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#ef444440}.btn.danger:hover{background:#dc2626;box-shadow:0 6px 16px #ef444459}.btn.success{background:var(--success);box-shadow:0 4px 12px #10b98140}.btn.success:hover{background:#059669}.study-screen-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}.study-mode-selector{display:flex;background:#0003;padding:4px;border-radius:40px;border:1px solid var(--border-color)}.mode-btn{background:transparent;border:none;color:var(--text-secondary);font-family:var(--font-heading);font-weight:600;font-size:.85rem;padding:8px 16px;border-radius:30px;cursor:pointer;transition:all .2s ease}.mode-btn.active{background:var(--panel-bg);color:var(--text-primary);box-shadow:0 2px 8px #0003}.progress-bar-container{width:100%;height:6px;background:#ffffff0a;border-radius:3px;margin-bottom:24px;position:relative;overflow:hidden}.progress-bar-fill{height:100%;background:linear-gradient(90deg,var(--primary) 0%,var(--success) 100%);transition:width .3s 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ease;position:relative;overflow:hidden}.choice-btn:hover{background:#ffffff0f;border-color:var(--primary);transform:translateY(-1px)}.choice-btn.correct{background:#10b98126!important;border-color:var(--success)!important;color:#fff}.choice-btn.incorrect{background:#ef444426!important;border-color:var(--danger)!important;animation:shake .4s ease}.typing-input-wrap{display:flex;flex-direction:column;gap:16px;width:100%;max-width:400px;margin-top:20px}.typing-field{width:100%;background:#0003;border:1px solid var(--border-color);color:var(--text-primary);padding:16px;border-radius:var(--border-radius-sm);font-size:1.25rem;font-weight:600;text-align:center;font-family:var(--font-heading);letter-spacing:.5px;outline:none;transition:border-color .2s ease,box-shadow .2s ease}.typing-field:focus{border-color:var(--primary);box-shadow:0 0 10px #6366f126}.typing-field.shake{animation:shake .4s 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var(--border-color);border-radius:var(--border-radius);overflow:hidden;background:#00000026}.word-row-wrap{padding:14px 20px;border-bottom:1px solid var(--border-color);display:flex;align-items:center;justify-content:space-between;gap:16px;transition:background .2s ease}.word-row-wrap:hover{background:#ffffff05}.word-row-info{display:flex;flex-direction:column;gap:4px;flex:1;min-width:0}.word-row-header{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.word-row-name{font-family:var(--font-heading);font-weight:700;font-size:1.15rem;color:var(--text-primary)}.word-row-pos{font-size:.75rem;font-style:italic;color:var(--primary);background:var(--primary-glow);padding:2px 8px;border-radius:10px}.word-row-domain{font-size:.7rem;background:#ffffff0d;border:1px solid var(--border-color);padding:2px 6px;border-radius:4px;color:var(--text-secondary)}.word-row-translation{font-size:.9rem;color:var(--text-secondary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.word-row-example{font-size:.8rem;color:var(--text-muted);font-style:italic;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.word-row-actions{display:flex;align-items:center;gap:8px;flex-shrink:0}.star-btn{background:transparent;border:none;color:var(--text-muted);font-size:1.25rem;cursor:pointer;transition:transform .2s ease,color .2s ease;width:32px;height:32px;display:flex;align-items:center;justify-content:center;border-radius:50%}.star-btn:hover{transform:scale(1.15);background:#f59e0b0d}.star-btn.starred{color:#fbbf24;filter:drop-shadow(0 0 4px rgba(251,191,36,.4))}.status-badge-explorer{font-size:.7rem;text-transform:uppercase;font-weight:600;padding:3px 8px;border-radius:12px}.status-badge-explorer.new{color:var(--text-muted);background:#ffffff0a}.status-badge-explorer.learning{color:var(--warning);background:var(--warning-glow)}.status-badge-explorer.mastered{color:var(--success);background:var(--success-glow)}.settings-list{display:flex;flex-direction:column;gap:20px}.settings-group{display:flex;flex-direction:column;gap:8px;border-bottom:1px solid var(--border-color);padding-bottom:20px}.settings-group:last-child{border-bottom:none;padding-bottom:0}.settings-label{font-family:var(--font-heading);font-weight:600;font-size:1.05rem}.settings-desc{font-size:.85rem;color:var(--text-secondary);margin-bottom:8px}.settings-control-row{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.range-slider{flex:1;min-width:200px;accent-color:var(--primary);cursor:pointer}@keyframes pulse{0%,to{opacity:.5;transform:scale(1)}50%{opacity:.9;transform:scale(1.02)}}@keyframes shake{0%,to{transform:translate(0)}20%,60%{transform:translate(-6px)}40%,80%{transform:translate(6px)}}@keyframes spin{to{transform:rotate(360deg)}}.spinner{border:3px solid rgba(255,255,255,.05);border-top-color:var(--primary);border-radius:50%;width:48px;height:48px;animation:spin .8s linear infinite}.center-spinner{display:flex;justify-content:center;align-items:center;min-height:300px}.danger-zone{border:1px solid rgba(239,68,68,.2);background:#ef444408;padding:20px;border-radius:var(--border-radius);margin-top:20px}.danger-zone h4{font-family:var(--font-heading);color:var(--danger);margin-bottom:6px}.danger-zone p{font-size:.85rem;color:var(--text-secondary);margin-bottom:14px}.empty-state-wrap{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:60px 20px;gap:16px}.empty-state-wrap svg{color:var(--text-muted)}.empty-state-title{font-family:var(--font-heading);font-size:1.4rem;font-weight:700}.empty-state-desc{font-size:.95rem;color:var(--text-secondary);max-width:400px}