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.2s}.fc-btn-next{background:var(--accent-color);color:#fff}.fc-btn-next:hover{background:var(--accent-hover)}.fc-btn-next:disabled{opacity:.4;cursor:default}.fc-btn-end{background:var(--text-secondary);color:var(--secondary-bg)}.fc-btn-end:hover{background:var(--text-primary)}.fc-btn-reset{background:transparent;color:var(--text-secondary);border:1px solid var(--border-color);padding-inline:1rem;flex-shrink:0}.fc-btn-reset:hover{color:var(--text-primary);border-color:var(--text-secondary);background:color-mix(in srgb,var(--secondary-bg) 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h2{font-size:1.2rem;color:var(--accent-color)}.shortcut-settings-btn{background:none;border:none;color:var(--text-secondary);cursor:pointer;border-radius:4px;padding:.35rem .5rem;font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.02em;transition:all .2s}.shortcut-settings-btn:hover{color:var(--text-primary);background:#0000000f}[data-theme=dark] .shortcut-settings-btn:hover{background:#ffffff14}.shortcut-settings-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:var(--overlay-bg);z-index:3000;display:none;align-items:center;justify-content:center;padding:1rem}.shortcut-settings-overlay.visible{display:flex}.shortcut-settings-panel{width:min(420px,100%);background:var(--secondary-bg);border:1px solid var(--border-color);border-radius:14px;box-shadow:var(--shadow-md);overflow:hidden}.shortcut-settings-header{padding:1rem 1.25rem;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--border-color);background:var(--tertiary-bg)}.shortcut-settings-header h2{font-size:1.1rem;color:var(--accent-color)}.shortcut-settings-row{padding:1.25rem;display:flex;align-items:center;justify-content:space-between;gap:1rem}.shortcut-settings-row p{margin-top:.35rem;color:var(--text-secondary);font-family:monospace}.shortcut-capture-hint{min-height:1.5rem;padding:0 1.25rem 1.25rem;color:var(--accent-color);font-size:.9rem}.command-palette-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:var(--overlay-bg);z-index:3200;display:none;align-items:flex-start;justify-content:center;padding:12vh 1rem 1rem}.command-palette-overlay.visible{display:flex}.command-palette{width:min(560px,100%);background:var(--secondary-bg);border:1px solid var(--border-color);border-radius:14px;overflow:hidden;box-shadow:var(--shadow-md)}.command-palette-input{width:100%;padding:1rem 1.1rem;border:none;border-bottom:1px solid var(--border-color);background:var(--secondary-bg);color:var(--text-primary);font-size:1rem;outline:none}.command-palette-list{max-height:340px;overflow-y:auto;padding:.4rem}.command-palette-item{width:100%;border:none;border-radius:8px;background:transparent;color:var(--text-primary);cursor:pointer;padding:.75rem .9rem;text-align:left;font-size:.95rem}.command-palette-item:hover,.command-palette-item.active{background:color-mix(in srgb,var(--accent-color) 12%,transparent);color:var(--accent-color)}.storage-info-active{color:var(--accent-color)!important;font-weight:600}.app-error{background:color-mix(in srgb,var(--error) 10%,var(--secondary-bg));border:1px solid color-mix(in srgb,var(--error) 35%,var(--border-color));border-radius:12px;color:var(--text-primary);margin:2rem 0;padding:1.25rem}.app-error strong{color:var(--error)}.filter-section{border-bottom:1px solid var(--border-color);background:color-mix(in srgb,var(--accent-color) 5%,transparent)}.filter-header{padding:1rem 1.5rem;cursor:pointer;display:flex;align-items:center;gap:.5rem;font-weight:600;color:var(--accent-color);transition:background .2s}.filter-header:hover{background:color-mix(in srgb,var(--accent-color) 10%,transparent)}.filter-icon{font-size:.8rem;transition:transform .2s;display:inline-block}.filter-section.collapsed .filter-icon{transform:rotate(-90deg)}.filter-content{padding:1rem 1.5rem;border-top:1px solid var(--border-color);overflow:hidden;transition:max-height .3s ease;max-height:500px}.filter-section.collapsed .filter-content{max-height:0;padding:0 1.5rem;border-top:none}.filter-actions{display:flex;gap:.5rem;margin-bottom:1rem}.filter-actions button{flex:1;padding:.4rem;background:var(--border-color);border:1px solid var(--border-color);color:var(--text-primary);border-radius:4px;cursor:pointer;font-size:.85rem;transition:all .2s}.filter-actions button:hover{background:var(--accent-color);border-color:var(--accent-color)}.filter-list{max-height:200px;overflow-y:auto;margin-bottom:1rem;padding-right:.5rem}.filter-item{display:flex;align-items:center;gap:.5rem;padding:.4rem 0;cursor:pointer;font-size:.9rem}.filter-item input[type=checkbox]{accent-color:var(--accent-color);width:1rem;height:1rem;cursor:pointer}.filter-item label{cursor:pointer;flex:1;color:var(--text-secondary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.filter-item:hover label{color:var(--text-primary)}.apply-filter-btn{width:100%;padding:.6rem;background:var(--accent-color);color:#fff;border:none;border-radius:6px;cursor:pointer;font-weight:600;transition:background .2s}.apply-filter-btn:hover{background:var(--accent-hover)}.quiz-set-selector{border-bottom:1px solid var(--border-color);background:color-mix(in srgb,var(--accent-color) 5%,transparent)}.quiz-set-selector.collapsed .quiz-set-list{max-height:0;padding:0 1.5rem;border-top:none}.quiz-set-selector.collapsed #quiz-set-icon{transform:rotate(-90deg)}.quiz-set-selector-header{padding:1rem 1.5rem;cursor:pointer;display:flex;align-items:center;gap:.5rem;font-weight:600;color:var(--accent-color);transition:background .2s}.quiz-set-selector-header:hover{background:color-mix(in srgb,var(--accent-color) 10%,transparent)}.quiz-set-list{padding:1rem 1.5rem;border-top:1px solid var(--border-color);overflow:hidden;transition:max-height .3s ease;max-height:500px;display:flex;flex-direction:column;gap:.5rem}.quiz-set-btn{padding:.75rem 1rem;background:var(--secondary-bg);border:1px solid var(--border-color);border-radius:6px;color:var(--text-primary);cursor:pointer;font-size:.9rem;font-weight:500;text-align:left;transition:all .2s;width:100%}.quiz-set-btn:hover{background:color-mix(in srgb,var(--accent-color) 15%,transparent);border-color:var(--accent-color)}.quiz-set-btn.active{background:var(--accent-color);border-color:var(--accent-color);color:#fff;font-weight:600}.theme-toggle{background:none;border:none;cursor:pointer;padding:.3rem;border-radius:4px;transition:all .2s;color:var(--text-secondary);width:36px;height:36px;display:flex;align-items:center;justify-content:center}.theme-toggle img{width:24px;height:24px;opacity:.7;transition:opacity .2s,filter .2s;filter:brightness(0) opacity(.6)}.theme-toggle img[data-theme-icon=sun]{width:28px;height:28px}[data-theme=dark] .theme-toggle img{filter:brightness(0) invert(1) opacity(.7)}.theme-toggle:hover img{opacity:1}.theme-toggle:hover{color:var(--text-primary);background:#0000000f}[data-theme=dark] .theme-toggle:hover{background:#ffffff14}.filter-list::-webkit-scrollbar{width:6px}