:root{--bg-base:#0b0f19;--bg-surface:#161c2d99;--bg-card:#1e293bb3;--border-color:#ffffff14;--border-focus:#3b82f666;--text-primary:#f3f4f6;--text-secondary:#9ca3af;--color-primary:#3b82f6;--color-primary-hover:#2563eb;--color-success:#10b981;--color-success-hover:#059669;--color-danger:#ef4444;--color-danger-hover:#dc2626;--color-accent:#8b5cf6;--shadow-lg:0 10px 25px -5px #0000004d, 0 8px 10px -6px #0000004d;--shadow-glow:0 0 20px #3b82f626}*{box-sizing:border-box;margin:0;padding:0}body{background:radial-gradient(circle at 50% 0%, #1e1b4b 0%, var(--bg-base) 60%);color:var(--text-primary);-webkit-font-smoothing:antialiased;flex-direction:column;min-height:100vh;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;display:flex;overflow-x:hidden}header{border-bottom:1px solid var(--border-color);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);z-index:100;background:#0b0f19cc;justify-content:space-between;align-items:center;padding:.75rem 1.25rem;display:flex;position:sticky;top:0}.logo{background:linear-gradient(135deg, #60a5fa, var(--color-accent));-webkit-text-fill-color:transparent;letter-spacing:-.5px;-webkit-background-clip:text;align-items:center;gap:.5rem;font-family:Outfit,sans-serif;font-size:1.4rem;font-weight:800;display:flex}.logo:before{content:"⚡";-webkit-text-fill-color:initial;font-size:1.5rem}main{flex-direction:column;flex:1;gap:2rem;width:100%;max-width:1200px;margin:0 auto;padding:2rem 1.5rem;display:flex}.glass{background:var(--bg-surface);border:1px solid var(--border-color);-webkit-backdrop-filter:blur(16px);box-shadow:var(--shadow-lg);border-radius:16px}.btn{cursor:pointer;color:#fff;white-space:nowrap;border:none;border-radius:10px;justify-content:center;align-items:center;gap:.5rem;padding:.75rem 1.25rem;font-size:.9rem;font-weight:600;transition:all .2s cubic-bezier(.4,0,.2,1);display:inline-flex}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:linear-gradient(135deg, 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h2{margin-bottom:.5rem;font-family:Outfit,sans-serif;font-size:1.5rem}.import-header p{color:var(--text-secondary);font-size:.9rem}.drop-zone{border:2px dashed var(--border-color);cursor:pointer;background:#ffffff05;border-radius:12px;flex-direction:column;align-items:center;gap:1rem;padding:3rem 1rem;transition:all .25s;display:flex}.drop-zone.dragover{border-color:var(--color-primary);box-shadow:var(--shadow-glow);background:#3b82f614}.drop-zone svg{width:48px;height:48px;color:var(--text-secondary);transition:color .25s}.drop-zone:hover svg{color:var(--color-primary)}.file-inputs{display:none}.decks-card{flex-direction:column;gap:1.5rem;padding:2.5rem;display:flex}.decks-header h2{font-family:Outfit,sans-serif;font-size:1.5rem}.deck-list{flex-direction:column;gap:1rem;max-height:350px;padding-right:.5rem;display:flex;overflow-y:auto}.deck-item{border:1px solid var(--border-color);background:#ffffff08;border-radius:12px;justify-content:space-between;align-items:center;padding:1rem 1.25rem;transition:all .2s;display:flex}.deck-item:hover{background:#ffffff0d;border-color:#ffffff26}.deck-info{text-align:left;flex-direction:column;gap:.25rem;min-width:0;display:flex}.deck-name{white-space:nowrap;text-overflow:ellipsis;width:100%;font-size:1rem;font-weight:600;overflow:hidden}.deck-meta{color:var(--text-secondary);gap:.75rem;font-size:.8rem;display:flex}.deck-meta span{align-items:center;gap:.25rem;display:flex}.deck-actions{gap:.5rem;display:flex}.empty-state{text-align:center;color:var(--text-secondary);flex-direction:column;align-items:center;gap:1rem;padding:3rem 1rem;font-size:.95rem;display:flex}.practice-lobby{flex-direction:column;gap:1rem;width:100%;max-width:600px;margin:0 auto;padding:1.5rem;display:flex}.practice-lobby h2{background:linear-gradient(135deg, #60a5fa, var(--color-accent));-webkit-text-fill-color:transparent;text-align:center;-webkit-background-clip:text;margin-bottom:.15rem;font-family:Outfit,sans-serif;font-size:1.5rem}.practice-lobby .deck-subtitle{color:var(--text-secondary);text-align:center;margin-bottom:.75rem;font-size:.85rem}.mode-selector{flex-direction:column;gap:.5rem;display:flex}.mode-label{color:var(--text-secondary);text-transform:uppercase;letter-spacing:.5px;text-align:left;margin-bottom:.25rem;font-size:.8rem;font-weight:600}.mode-btn{text-align:left;border:1px solid var(--border-color);width:100%;color:var(--text-secondary);cursor:pointer;background:#ffffff08;border-radius:8px;padding:.5rem .75rem;font-weight:500;transition:all .2s}.mode-btn:hover{background:#ffffff0f}.mode-btn.active{border-color:var(--color-primary);color:var(--text-primary);background:#3b82f61a;box-shadow:0 0 15px #3b82f61a}.session-settings{flex-direction:column;gap:.75rem;margin-top:.5rem;display:flex}.settings-select{border:1px solid var(--border-color);width:100%;color:var(--text-primary);cursor:pointer;background:#0f172a99;border-radius:8px;outline:none;padding:.5rem .75rem;font-size:.9rem}.settings-select:focus{border-color:var(--color-primary)}.practice-active{flex-direction:column;gap:1.5rem;width:100%;display:flex}.active-header{border:1px solid var(--border-color);background:#ffffff05;border-radius:12px;justify-content:space-between;align-items:center;padding:.4rem 1rem;display:flex}.active-mode-title{color:var(--color-accent);font-family:Outfit,sans-serif;font-size:1.1rem;font-weight:600}.active-stats{color:var(--text-secondary);gap:1.5rem;font-size:.9rem;display:flex}.active-stats b{color:var(--text-primary)}.workspace{flex-direction:column;gap:1.5rem;display:flex}.card-container{flex-direction:column;justify-content:space-between;min-height:380px;padding:2.5rem;display:flex;position:relative}.card-top{color:var(--text-secondary);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:.75rem;margin-bottom:1.5rem;font-size:.8rem;display:flex}.card-progress{white-space:nowrap}.blank-filled{color:var(--color-success);border-bottom:2px solid var(--color-success);margin:0 .25rem;padding:0 .15rem;font-weight:700}.card-category{text-transform:uppercase;letter-spacing:1px;color:var(--color-accent);font-weight:600}.timer-container{width:36px;height:36px;position:relative}.timer-svg{transform:rotate(-90deg)}.timer-bg{fill:none;stroke:#ffffff1a;stroke-width:3px}.timer-progress{fill:none;stroke:var(--color-primary);stroke-width:3px;stroke-linecap:round;stroke-dasharray:100;stroke-dashoffset:0;transition:stroke-dashoffset .1s linear,stroke 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#f59e0b33;border-radius:20px;align-items:center;gap:.5rem;padding:.4rem .8rem;font-size:.85rem;font-weight:600;display:flex}.active-speed-control{border:1px solid var(--border-color);background:#ffffff05;border-radius:12px;align-items:center;gap:1.5rem;padding:1rem 1.5rem;display:flex}.active-speed-control span{color:var(--text-secondary);text-transform:uppercase;font-size:.85rem;font-weight:600}.active-speed-control b{color:var(--text-primary)}.speed-slider{-webkit-appearance:none;background:#ffffff1a;border-radius:3px;outline:none;flex:1;max-width:250px;height:6px}.speed-slider::-webkit-slider-thumb{-webkit-appearance:none;background:var(--color-primary);cursor:pointer;border-radius:50%;width:18px;height:18px;transition:transform 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.75rem}.logo{font-size:1.2rem}.active-speed-control{flex-direction:column;align-items:stretch;gap:.75rem}.active-speed-control .speed-slider{width:100%;max-width:100%}.active-speed-control button{width:100%}.self-eval-buttons .btn{flex:1;width:100%!important}main{padding:1.5rem 1rem}.drop-zone{padding:2rem 1rem;font-size:.9rem}.import-card .btn,.decks-card .btn{white-space:normal;word-break:break-word}}@media (width<=576px){.nav-btn-text,.practice-btn-text{display:none}}@media (width<=480px){.deck-item{flex-direction:column;align-items:stretch;gap:.75rem;padding:1rem}.deck-info{text-align:center}.deck-meta,.deck-actions{justify-content:center}.deck-actions .btn{flex:1}}