@import "https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&display=swap";:root{--bg-primary:#0a0a0a;--bg-surface:#1a1a2e;--bg-surface-hover:#232340;--bg-card:#1a1a2ecc;--primary:#1ed760;--primary-dim:#1ed76026;--primary-glow:#1ed76066;--accent:#a855f7;--accent-dim:#a855f726;--danger:#e22134;--danger-dim:#e2213426;--warning:#ff6b35;--text-primary:#f0f0f0;--text-secondary:#8b8b9e;--text-dim:#5a5a6e;--border:#ffffff0f;--radius:16px;--radius-sm:10px;--radius-full:999px}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-primary);color:var(--text-primary);-webkit-font-smoothing:antialiased;min-height:100dvh;font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif}#root{flex-direction:column;max-width:480px;min-height:100dvh;margin:0 auto;padding:20px 16px 40px;display:flex}h1{letter-spacing:-.02em;font-size:2rem;font-weight:900}h2{letter-spacing:-.01em;font-size:1.4rem;font-weight:700}h3{color:var(--text-secondary);text-transform:uppercase;letter-spacing:.05em;font-size:.9rem;font-weight:600}p{color:var(--text-secondary);line-height:1.5}.subtitle{color:var(--text-dim);margin-top:4px;font-size:1rem}.btn{background:var(--bg-surface);color:var(--text-primary);border:1px solid var(--border);border-radius:var(--radius-full);cursor:pointer;-webkit-tap-highlight-color:transparent;justify-content:center;align-items:center;gap:10px;width:100%;padding:16px 28px;font-family:inherit;font-size:1.05rem;font-weight:700;transition:all .2s;display:flex}.btn:active{transform:scale(.97)}.btn-primary{background:linear-gradient(135deg, var(--primary), #17b04e);color:#000;box-shadow:0 4px 20px var(--primary-dim);border:none}.btn-primary:active{box-shadow:0 2px 10px var(--primary-dim)}.btn-large{margin-bottom:28px;padding:20px 32px;font-size:1.15rem}.btn-danger{color:var(--danger);background:0 0;border:1px solid #e221344d}.icon-btn{color:var(--text-secondary);cursor:pointer;background:0 0;border:none;border-radius:50%;align-items:center;padding:8px;transition:color .2s;display:flex}.icon-btn:active{color:var(--text-primary)}.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);margin-bottom:12px;padding:18px}.alert-banner{background:var(--danger-dim);color:#ff8a8a;border-radius:var(--radius-sm);cursor:pointer;border:1px solid #e2213433;margin-bottom:20px;padding:14px 18px;font-size:.85rem;font-weight:500}.dashboard-header{justify-content:space-between;align-items:flex-start;margin-bottom:24px;display:flex}.stat-grid{grid-template-columns:1fr 1fr 1fr;gap:12px;margin-bottom:24px;display:grid}.stat-item{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);text-align:center;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);flex-direction:column;align-items:center;gap:6px;padding:16px 12px;display:flex}.stat-item .value{color:var(--text-primary);font-size:1.8rem;font-weight:900}.stat-item .label{color:var(--text-dim);text-transform:uppercase;letter-spacing:.05em;font-size:.75rem;font-weight:600}.section-title{color:var(--text-primary);margin-bottom:14px;font-size:1.1rem;font-weight:700}.topic-list{flex-direction:column;gap:10px;display:flex}.topic-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);cursor:pointer;text-align:left;width:100%;color:inherit;-webkit-tap-highlight-color:transparent;align-items:center;gap:14px;padding:16px 18px;font-family:inherit;transition:all .2s;display:flex}.topic-card:active{background:var(--bg-surface-hover);transform:scale(.98)}.topic-info{flex-direction:column;flex:1;gap:8px;display:flex}.topic-name{font-size:1rem;font-weight:700}.topic-count{color:var(--text-dim);font-size:.8rem;font-weight:500}.topic-arrow{color:var(--text-dim);flex-shrink:0}.progress-bar-bg{background:#ffffff0f;border-radius:4px;width:100%;height:4px;overflow:hidden}.progress-bar-fill{background:linear-gradient(90deg, var(--primary), var(--accent));border-radius:4px;min-width:0;height:100%;transition:width .5s}.driving-container{flex-direction:column;flex-grow:1;justify-content:space-between;min-height:calc(100dvh - 40px);display:flex}.driving-header{text-align:center;padding-top:10px}.session-meta{justify-content:center;gap:8px;margin-bottom:12px;display:flex}.difficulty-badge{border-radius:var(--radius-full);text-transform:uppercase;letter-spacing:.05em;padding:4px 14px;font-size:.75rem;font-weight:700}.difficulty-badge.easy{background:var(--primary-dim);color:var(--primary)}.difficulty-badge.medium{background:var(--accent-dim);color:var(--accent)}.difficulty-badge.hard{background:var(--danger-dim);color:var(--danger)}.difficulty-badge.small{padding:2px 10px;font-size:.65rem}.topic-badge{border-radius:var(--radius-full);color:var(--text-secondary);background:#ffffff0f;padding:4px 14px;font-size:.75rem;font-weight:600}.question-title{margin-bottom:8px;font-size:1.6rem;font-weight:800}.timer{color:var(--primary);font-variant-numeric:tabular-nums;margin:4px 0;font-size:2rem;font-weight:900}.voice-status{color:var(--text-dim);margin-top:4px;font-size:.9rem}.mic-button-container{flex-grow:1;justify-content:center;align-items:center;padding:20px 0;display:flex}.mic-button{background:linear-gradient(135deg, var(--primary), #17b04e);cursor:pointer;color:#000;-webkit-tap-highlight-color:transparent;border:none;border-radius:50%;justify-content:center;align-items:center;width:180px;height:180px;transition:all .3s;display:flex}.mic-button:disabled{opacity:.5;cursor:not-allowed}.mic-button.listening{background:linear-gradient(135deg,#ff6b35,#e22134);animation:1.5s infinite pulse;box-shadow:0 0 0 16px #ff6b3533,0 0 0 32px #ff6b3514}.mic-button.speaking{background:linear-gradient(135deg,#fff,#e0e0e0);animation:2s infinite pulse;box-shadow:0 0 0 16px #ffffff1a}.mic-button.solved{background:linear-gradient(135deg, var(--accent), #7c3aed);box-shadow:0 0 0 16px #a855f733}@keyframes pulse{0%{transform:scale(1)}50%{transform:scale(1.04)}to{transform:scale(1)}}.transcript-display{text-align:center;min-height:40px;color:var(--text-dim);padding:0 20px;font-size:.9rem;font-style:italic}.controls{grid-template-columns:1fr 1fr 1fr 1fr;gap:10px;padding-bottom:10px;display:grid}.control-btn{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);color:var(--text-secondary);text-transform:uppercase;letter-spacing:.05em;cursor:pointer;-webkit-tap-highlight-color:transparent;flex-direction:column;align-items:center;gap:6px;padding:14px 8px;font-family:inherit;font-size:.7rem;font-weight:600;transition:all .2s;display:flex}.control-btn:active{background:var(--bg-surface-hover);transform:scale(.95)}.control-btn.danger{color:var(--danger);border-color:#e2213433}.review-page{padding-top:10px}.review-page h1{margin-bottom:4px}.review-stats{grid-template-columns:1fr 1fr 1fr;gap:12px;margin:24px 0;display:grid}.review-stat{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);text-align:center;padding:16px}.review-stat .value{font-size:1.6rem;font-weight:900}.review-stat .label{color:var(--text-dim);text-transform:uppercase;letter-spacing:.05em;margin-top:4px;font-size:.7rem;font-weight:600}.review-section{margin-bottom:12px}.section-label{margin-bottom:12px;font-size:.8rem}.section-label.success{color:var(--primary)}.section-label.danger{color:var(--danger)}.review-item{border-bottom:1px solid var(--border);align-items:center;gap:10px;padding:10px 0;font-size:.9rem;font-weight:500;display:flex}.review-item:last-child{border-bottom:none}.review-meta{color:var(--text-dim);white-space:nowrap;margin-left:auto;font-size:.75rem}input[type=text],input[type=password]{background:var(--bg-surface);border:1px solid var(--border);width:100%;color:var(--text-primary);border-radius:var(--radius-sm);margin-top:12px;padding:16px;font-family:inherit;font-size:1rem}input[type=text]:focus,input[type=password]:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-dim);outline:none}