*,*:before,*:after{box-sizing:border-box}:root{--color-bg: #ffffff;--color-surface: #f5f5f5;--color-card-bg: #ffffff;--color-card-shadow: rgba(0,0,0,.12);--color-accent: #16a34a;--color-accent-light: #dcfce7;--color-correct: #16a34a;--color-incorrect: #dc2626;--color-string: #374151;--color-fret: #9ca3af;--color-nut: #546e7a;--color-inlay: #d1d5db;--color-dot-label: #ffffff;--color-text-primary: #111827;--color-text-secondary:#6b7280;--radius-card: 12px;--radius-button: 8px;--transition-flip: .45s ease}[data-theme=dark]{--color-bg: #0f172a;--color-surface: #1e293b;--color-card-bg: #1e293b;--color-card-shadow: rgba(0,0,0,.4);--color-text-primary: #f1f5f9;--color-text-secondary:#94a3b8;--color-fret: #475569;--color-nut: #e2e8f0;--color-inlay: 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var(--color-incorrect)}.flashcard__flip-btn{margin-top:8px}.flashcard__buttons{display:flex;gap:12px;flex-wrap:wrap;justify-content:center;margin-top:8px}.btn{padding:10px 22px;border-radius:var(--radius-button);font-size:.9rem;font-weight:600;border:none;cursor:pointer;transition:opacity .15s}.btn:active{opacity:.75}.btn--primary{background:var(--color-accent);color:#fff}.btn--secondary{background:var(--color-surface);color:var(--color-text-primary);border:1px solid var(--color-fret)}.btn--easy{background:#dcfce7;color:#166534}.btn--gotit{background:var(--color-accent);color:#fff}.btn--missed{background:#fee2e2;color:#991b1b}.note-lookup{display:flex;flex-direction:column;gap:20px;max-width:900px;margin:0 auto;padding:16px}.note-lookup__title{font-size:1.25rem;font-weight:700;color:var(--color-text-primary);margin:0}.note-lookup__grid{display:grid;grid-template-columns:repeat(6,1fr);gap:8px}@media(max-width:480px){.note-lookup__grid{grid-template-columns:repeat(4,1fr)}}.note-lookup__btn{padding:10px 6px;border-radius:var(--radius-button);border:1.5px solid var(--color-fret);background:var(--color-surface);color:var(--color-text-primary);font-weight:700;font-size:.95rem;cursor:pointer;transition:background .15s,color .15s}.note-lookup__btn:hover{border-color:var(--color-accent)}.note-lookup__table{width:100%;border-collapse:collapse;font-size:.9rem}.note-lookup__table th,.note-lookup__table td{padding:8px 12px;text-align:left;border-bottom:1px solid var(--color-fret);color:var(--color-text-primary)}.note-lookup__table th{color:var(--color-text-secondary);font-weight:600}.note-lookup__row--dim 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8px;color:var(--color-text-primary)}.stats__list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:6px;font-size:.875rem;color:var(--color-text-primary)}.btn--danger{padding:10px 22px;border-radius:var(--radius-button);font-size:.9rem;font-weight:600;border:none;cursor:pointer;background:#fee2e2;color:#991b1b;align-self:flex-start}.btn--danger:disabled{opacity:.5;cursor:not-allowed}.settings-panel{position:fixed;top:0;right:0;width:min(380px,100vw);height:100dvh;background:var(--color-card-bg);box-shadow:-4px 0 24px #00000026;display:flex;flex-direction:column;z-index:200;overflow-y:auto}.settings-panel__header{display:flex;align-items:center;justify-content:space-between;padding:20px 24px 12px;border-bottom:1px solid var(--color-fret)}.settings-panel__header h2{font-size:1.1rem;font-weight:700;margin:0;color:var(--color-text-primary)}.settings-panel__close{background:none;border:none;font-size:1.1rem;cursor:pointer;color:var(--color-text-secondary);padding:4px 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10px;border-radius:2px;width:fit-content;z-index:2}.speed-card__title{font-size:1.4rem;font-weight:900;color:#f33;text-shadow:0 0 8px rgba(255,50,50,.5),2px 2px 0 #330000;margin:4px 0 0;letter-spacing:.08em;text-transform:uppercase;z-index:2}.speed-card__desc{font-size:.72rem;color:#0c5;text-shadow:0 0 4px rgba(0,204,85,.3);line-height:1.5;margin:0;z-index:2}.speed-card__meta{font-size:.65rem;color:#666;z-index:2}.speed-card__cta{font-size:.85rem;font-weight:700;color:#ff0;text-shadow:0 0 6px rgba(255,255,0,.4);margin-top:auto;z-index:2;letter-spacing:.1em;text-transform:uppercase;animation:speed-card-blink 1.2s step-end infinite}@keyframes speed-card-blink{0%,80%{opacity:1}81%,to{opacity:0}}@media(prefers-reduced-motion:reduce){.speed-card__cta{animation:none}}.speed-card__horizon{position:absolute;bottom:100px;left:0;right:0;height:2px;background:linear-gradient(90deg,transparent,#00ff66,transparent);box-shadow:0 0 8px 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24px;display:flex;flex-direction:column;gap:24px}.deck-manager__section{display:flex;flex-direction:column;gap:10px}.deck-manager__section-title{font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:var(--color-text-secondary);margin:0}.deck-item{display:flex;align-items:center;gap:12px;padding:14px 16px;background:var(--color-surface);border:1.5px solid transparent;border-radius:var(--radius-button);cursor:pointer;text-align:left;font-family:inherit;transition:border-color .15s,background .15s;width:100%}.deck-item:hover{border-color:var(--color-accent);background:var(--color-accent-light)}.deck-item--custom{cursor:default;flex-wrap:wrap}.deck-item__info{flex:1;min-width:0}.deck-item__title{font-size:.9rem;font-weight:600;color:var(--color-text-primary);margin:0}.deck-item__desc{font-size:.78rem;color:var(--color-text-secondary);margin:2px 0 0}.deck-item__count{font-size:.78rem;font-weight:600;color:var(--color-text-secondary);white-space:nowrap}.deck-item__actions{display:flex;gap:6px;width:100%;padding-top:8px}.deck-manager__create-btn{width:100%}.btn--small{padding:6px 12px;font-size:.78rem}.btn--danger{background:#fee2e2;color:#991b1b;border:none}.deck-creator{display:flex;flex-direction:column;gap:20px}.deck-creator__title{font-size:1rem;font-weight:700;margin:0;color:var(--color-text-primary)}.deck-creator__field{display:flex;flex-direction:column;gap:8px}.deck-creator__input{padding:10px 14px;border:1.5px solid var(--color-fret);border-radius:var(--radius-button);font-size:.9rem;font-family:inherit;background:var(--color-surface);color:var(--color-text-primary);transition:border-color .15s}.deck-creator__input:focus{outline:none;border-color:var(--color-accent)}.deck-creator__board{border-radius:var(--radius-card);overflow:hidden;border:1.5px solid var(--color-fret)}.deck-creator__actions{display:flex;gap:10px;justify-content:flex-end}.deck-creator__actions .btn:disabled{opacity:.4;cursor:not-allowed}.app{display:flex;flex-direction:column;min-height:100dvh}.app-header{display:flex;align-items:center;gap:16px;padding:0 24px;height:56px;background:var(--color-surface);border-bottom:1px solid var(--color-fret);position:sticky;top:0;z-index:100}.app-header__brand{font-size:1rem;font-weight:700;color:var(--color-accent);white-space:nowrap}.app-header__nav{display:flex;gap:4px;flex:1}.app-header__tab{padding:6px 14px;border:none;background:none;border-radius:var(--radius-button);font-size:.875rem;font-weight:500;color:var(--color-text-secondary);cursor:pointer;transition:background .15s,color 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auto}.quiz-view__loading{color:var(--color-text-secondary)}.quiz-view__deck-badge{display:flex;align-items:center;gap:10px;align-self:flex-start;padding:6px 12px;background:var(--color-accent-light);border-radius:var(--radius-button);font-size:.82rem}.quiz-view__deck-name{font-weight:600;color:var(--color-accent)}.quiz-view__deck-clear{background:none;border:none;font-size:.78rem;color:var(--color-text-secondary);cursor:pointer;padding:2px 4px;font-family:inherit}.quiz-view__deck-clear:hover{color:var(--color-text-primary)}.quiz-view__progress{font-size:.875rem;color:var(--color-text-secondary);align-self:flex-end}.quiz-view__done{text-align:center;padding:40px 20px;display:flex;flex-direction:column;align-items:center;gap:12px}.quiz-view__done h2{font-size:1.5rem;margin:0}.quiz-view__empty{text-align:center;padding:40px 20px;display:flex;flex-direction:column;align-items:center;gap:12px}.quiz-view__empty h2{font-size:1.5rem;margin:0}.quiz-view__empty p{color:var(--color-text-secondary);margin:0}.quiz-view__gate{text-align:center;padding:60px 20px;display:flex;flex-direction:column;align-items:center;gap:14px;max-width:480px;margin:0 auto}.quiz-view__gate h2{font-size:1.5rem;margin:0}.quiz-view__gate p{color:var(--color-text-secondary);margin:0}.quiz-view__error{text-align:center;padding:40px 20px;display:flex;flex-direction:column;align-items:center;gap:12px}.quiz-view__error h2{font-size:1.5rem;margin:0;color:var(--color-danger, #c22)}.quiz-view__error p{color:var(--color-text-secondary);margin:0;max-width:420px}.quiz-view__nav{display:flex;gap:16px;justify-content:center;width:100%;margin-top:32px}.quiz-nav-btn{display:inline-flex;align-items:center;gap:6px;padding:10px 20px;border:none;border-radius:var(--radius-button);background:transparent;color:var(--color-text-secondary);font-size:.9rem;font-weight:600;font-family:inherit;cursor:pointer;transition:color .15s,background .15s}.quiz-nav-btn:hover:not(:disabled){color:var(--color-text-primary);background:var(--color-surface)}.quiz-nav-btn:disabled{opacity:.3;cursor:not-allowed}.quiz-nav-btn__arrow{font-size:1.2rem;font-weight:300;line-height:1}.app-bottom-nav{display:none;position:fixed;bottom:0;left:0;right:0;height:60px;background:var(--color-card-bg);border-top:1px solid var(--color-fret);z-index:100}@media(max-width:640px){.app-header__nav{display:none}.app-bottom-nav{display:flex}.app-main{padding-bottom:68px}}.app-bottom-nav__tab{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;background:none;border:none;cursor:pointer;color:var(--color-text-secondary);font-size:.7rem;padding:6px 0;transition:color .15s}.app-bottom-nav__tab--active{color:var(--color-accent)}.app-bottom-nav__icon{font-size:1.15rem}.app-bottom-nav__label{font-size:.65rem}.settings-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0000004d;z-index:199}.version-badge{position:fixed;bottom:8px;right:12px;font-size:.7rem;color:var(--color-text-secondary);background:var(--color-surface);border-radius:4px;padding:2px 6px;z-index:300;pointer-events:none;opacity:.75}