:root{--card-bg: var(--s-surface);--card-border: var(--s-border);--card-shadow: rgba(0, 0, 0, .1);--text-primary: var(--s-text);--text-secondary: var(--s-text-muted);--primary-color: var(--s-accent);--success-color: #28a745;--danger-color: #dc3545;--warning-color: #ffc107;--info-color: #17a2b8;--spacing-xs: 4px;--spacing-sm: 8px;--spacing-md: 16px;--spacing-lg: 24px;--spacing-xl: 32px;--font-size-sm: 14px;--font-size-md: 16px;--font-size-lg: 18px;--font-size-xl: 20px;--mobile: 480px;--tablet: 768px;--desktop: 1024px;--wide: 1440px;--z-base: 1;--z-dropdown: 10;--z-overlay: 100;--z-modal: 1000}[data-theme=dark]{--card-bg: var(--s-surface);--card-border: var(--s-border);--card-shadow: rgba(0, 0, 0, .4);--text-primary: var(--s-text);--text-secondary: var(--s-text-muted);--primary-color: var(--s-accent)}.card-container{display:flex;flex-direction:column;height:100%;width:100%;background:var(--card-bg);color:var(--text-primary);position:relative;overflow:hidden;container-type:inline-size}.card-container.editing-mode{background:var(--s-surface);display:flex;flex-direction:column;overflow:hidden}.card-container .card-header{display:grid;grid-template-columns:auto 1fr auto 1fr auto;align-items:center;gap:var(--spacing-sm);padding:var(--spacing-md);background:var(--card-bg);border-bottom:1px solid var(--card-border);z-index:var(--z-dropdown);flex-shrink:0}.card-container .header-section{display:flex;align-items:center;justify-content:center}.card-container .header-left{justify-content:flex-start}.card-container .header-left-mid{justify-content:flex-start;gap:var(--spacing-xs)}.card-container .header-center{justify-content:center}.card-container .header-right-mid,.card-container .header-right{justify-content:flex-end}.card-container .close-button{width:40px;height:40px;display:flex;align-items:center;justify-content:center;background:transparent;border:1px solid var(--card-border);border-radius:50%;cursor:pointer;font-size:20px;line-height:1;color:var(--text-secondary);transition:all .2s;flex-shrink:0}.card-container .close-button:hover{background:var(--s-tint-danger-bg);border-color:var(--s-tint-danger-fg);color:var(--s-tint-danger-fg)}.card-container .close-button:active{transform:scale(.95)}.card-container .progress{font-size:var(--font-size-sm);color:var(--text-secondary);font-weight:500;white-space:nowrap}.card-container .flip-button{display:flex;align-items:center;gap:var(--spacing-sm);padding:var(--spacing-sm) var(--spacing-md);background:var(--primary-color);color:var(--s-accent-text);border:none;border-radius:24px;cursor:pointer;font-size:var(--font-size-sm);font-weight:600;transition:all .3s ease;box-shadow:0 2px 8px var(--card-shadow);white-space:nowrap;flex-shrink:0}.card-container .flip-button:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 4px 12px var(--card-shadow)}.card-container .flip-button:disabled{opacity:.5;cursor:not-allowed}.card-container .flip-button.editing{background:var(--warning-color)}.card-container .side-indicator{text-transform:uppercase;letter-spacing:.5px}.card-container .flip-icon{fill:currentColor;transition:transform .3s ease;flex-shrink:0}.card-container .flip-button:hover .flip-icon{transform:rotate(180deg)}.card-container .action-toggle{width:40px;height:40px;display:flex;align-items:center;justify-content:center;background:transparent;border:1px solid var(--card-border);border-radius:50%;cursor:pointer;transition:all .2s;flex-shrink:0}.card-container .action-toggle:hover{background:var(--card-border)}.card-container .action-toggle svg{fill:var(--text-secondary)}.card-container .action-menu{position:absolute;top:70px;inset-inline-end:var(--spacing-md);background:var(--card-bg);border:1px solid var(--card-border);border-radius:8px;box-shadow:0 4px 16px var(--card-shadow);padding:var(--spacing-sm);z-index:var(--z-dropdown);min-width:150px;animation:slideDown .2s ease}@keyframes slideDown{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.card-container .action-menu button{display:flex;align-items:center;gap:var(--spacing-sm);width:100%;padding:var(--spacing-sm) var(--spacing-md);background:transparent;border:none;border-radius:4px;cursor:pointer;font-size:var(--font-size-sm);text-align:left;transition:background .2s}.card-container .action-menu button:hover{background:var(--s-surface-2)}.card-container .card-main{display:block;overflow:hidden;padding:var(--spacing-md);background:var(--card-bg);min-height:0;flex:1}.card-container .card-main.editing-main{background:var(--s-surface);overflow-y:auto!important;overflow-x:hidden;-webkit-overflow-scrolling:touch;display:block}.card-container .media-zone{display:flex;align-items:center;justify-content:center;margin-bottom:12px;overflow:visible}.card-container .media-zone.media-zone-stacked{flex-direction:column;gap:8px;width:100%}.card-container .quick-confirm-btn{display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border:1px solid var(--s-success-border, var(--s-border));border-radius:8px;background:var(--s-surface-2);color:var(--s-success-text, var(--s-text));font-size:13px;font-weight:600;cursor:pointer;transition:background .15s ease,transform .15s ease}.card-container .quick-confirm-btn:hover{background:var(--s-tint-success-bg, var(--s-tint-neutral-bg));transform:translateY(-1px)}.card-container .quick-save-confirmed{display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border-radius:8px;background:var(--s-tint-success-bg, var(--s-tint-neutral-bg));color:var(--s-success-text, var(--s-text));font-size:13px;font-weight:600}.card-container .content-zone{flex:1;overflow-y:auto;overflow-x:hidden;margin-top:var(--spacing-md);min-height:0;-webkit-overflow-scrolling:touch}.card-container .content-zone.editing-content{display:block;overflow:visible;margin-top:0}.card-container .card-text{font-size:var(--font-size-lg);line-height:1.6;padding:var(--spacing-md);background:var(--s-surface-2);border-radius:8px;min-height:150px;overflow-y:auto;overflow-x:hidden;-webkit-overflow-scrolling:touch}.card-container .card-text em{color:var(--text-secondary)}.card-container .empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;padding:var(--spacing-xl);text-align:center}.card-container .empty-state p{color:var(--text-secondary);margin-bottom:var(--spacing-lg)}.card-container .card-footer{padding:var(--spacing-md);background:var(--card-bg);border-top:1px solid var(--card-border);z-index:var(--z-base);flex-shrink:0}.card-container .show-answer-btn{width:100%;padding:var(--spacing-md) var(--spacing-lg);background:var(--primary-color);color:var(--s-accent-text);border:none;border-radius:12px;font-size:var(--font-size-lg);font-weight:600;cursor:pointer;transition:all .3s;box-shadow:0 4px 16px var(--card-shadow)}.card-container .show-answer-btn:hover{background:var(--s-accent-hover);transform:translateY(-2px);box-shadow:0 6px 20px var(--card-shadow)}.card-container .rating-buttons{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--spacing-sm)}.card-container .rate-btn{display:flex;flex-direction:column;align-items:center;gap:var(--spacing-xs);padding:var(--spacing-md) var(--spacing-sm);border:none;border-radius:8px;color:#fff;cursor:pointer;transition:all .2s;font-weight:600}.card-container .rate-btn:hover{transform:translateY(-2px);box-shadow:0 4px 12px var(--card-shadow)}.card-container .rate-btn span{font-size:var(--font-size-md)}.card-container .rate-btn small{font-size:var(--font-size-sm);opacity:.9;font-weight:400}.card-container .rate-again{background:var(--danger-color)}.card-container .rate-hard{background:#fd7e14}.card-container .rate-good{background:var(--success-color)}.card-container .rate-easy{background:var(--info-color)}.card-container .nav-buttons{display:flex;gap:var(--spacing-md);justify-content:center}.card-container .nav-buttons button{flex:1;max-width:200px;padding:var(--spacing-md);background:var(--primary-color);color:var(--s-accent-text);border:none;border-radius:8px;font-size:var(--font-size-md);cursor:pointer;transition:all .2s}.card-container .nav-buttons button:hover:not(:disabled){background:var(--s-accent-hover)}.card-container .nav-buttons button:disabled{opacity:.5;cursor:not-allowed}.card-container .primary-button{padding:var(--spacing-md) var(--spacing-xl);background:var(--primary-color);color:var(--s-accent-text);border:none;border-radius:8px;font-size:var(--font-size-md);font-weight:600;cursor:pointer;transition:all .2s}.card-container .primary-button:hover{background:var(--s-accent-hover);transform:translateY(-1px)}.backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:var(--z-overlay)}@media(max-width:768px){.card-container{background:var(--s-surface)}.card-container.editing-mode{background:var(--s-surface);display:flex;flex-direction:column;overflow:hidden;height:100%}.card-container.editing-mode .card-header{flex-shrink:0;position:relative;z-index:10}.card-container .card-main{background:var(--s-surface);padding:8px}.card-container .card-main.editing-main{flex:1;overflow-y:auto!important;overflow-x:hidden;-webkit-overflow-scrolling:touch;padding:8px;min-height:0;display:block}.card-container .card-header{padding:8px;gap:4px;flex-shrink:0}.card-container .close-button,.card-container .action-toggle{width:36px;height:36px;font-size:18px}.card-container .flip-button{padding:6px 12px;font-size:13px}.card-container .card-text{font-size:16px;padding:12px;min-height:100px}.card-container .media-zone{min-height:auto;overflow:visible;display:flex;justify-content:center;align-items:center;margin-bottom:12px}.card-container .rating-buttons{grid-template-columns:repeat(2,1fr)}}@media(max-width:480px){.card-container .card-header{padding:6px;gap:3px}.card-container .close-button,.card-container .action-toggle{width:32px;height:32px;font-size:16px}.card-container .flip-button{padding:5px 10px;font-size:12px;gap:3px}.card-container .flip-icon{width:14px;height:14px}.card-container .card-main{padding:6px}.card-container .card-text{font-size:15px;padding:10px;min-height:80px}.card-container .card-footer{padding:8px}.card-container .rating-buttons{grid-template-columns:repeat(2,1fr);gap:6px}.card-container .rate-btn{padding:10px 6px}.card-container .rate-btn span{font-size:14px}.card-container .rate-btn small{font-size:11px}}@media(hover:none){.card-container .flip-button,.card-container .action-toggle,.card-container .close-button,.card-container .rate-btn,.card-container button{-webkit-tap-highlight-color:transparent;touch-action:manipulation}.card-container .rate-btn{min-height:60px}.card-container .card-text,.card-container .content-zone,.card-container .card-main.editing-main{touch-action:pan-y;-webkit-overflow-scrolling:touch}}@container (max-width: 768px){.card-container .card-header{padding:var(--spacing-sm);gap:var(--spacing-xs)}.card-container .close-button,.card-container .action-toggle{width:36px;height:36px;font-size:18px}.card-container .flip-button{padding:var(--spacing-xs) var(--spacing-sm);font-size:var(--font-size-sm)}.card-container .flip-icon{width:16px;height:16px}.card-container .card-main{padding:var(--spacing-sm)}.card-container .card-text{font-size:var(--font-size-md);padding:var(--spacing-sm);min-height:100px}.card-container .rating-buttons{grid-template-columns:repeat(2,1fr)}.card-container .rate-btn,.card-container .card-footer{padding:var(--spacing-sm)}}@container (max-width: 480px){.card-container .progress,.card-container .side-indicator{font-size:12px}.card-container .flip-button{padding:6px 10px;gap:4px}.card-container .close-button,.card-container .action-toggle{width:32px;height:32px;font-size:16px}.card-container .show-answer-btn{font-size:var(--font-size-md);padding:var(--spacing-sm) var(--spacing-md)}.card-container .media-zone{min-height:60px}.card-container .content-zone{margin-top:var(--spacing-sm)}}.flip-animation{animation:flipCard .3s ease-in-out}@keyframes flipCard{0%{transform:rotateY(0)}50%{transform:rotateY(90deg);opacity:.5}to{transform:rotateY(0)}}@media print{.card-container .card-header,.card-container .card-footer,.card-container .action-toggle,.card-container .close-button,.card-container .action-menu{display:none}.card-container{box-shadow:none;border:1px solid #000}}@media(prefers-reduced-motion:reduce){.card-container,.card-container *{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}@media(prefers-contrast:high){.card-container,.card-container .flip-button,.card-container .close-button,.card-container .action-toggle,.card-container .rate-btn,.card-container button{border:2px solid}}.card-header.svelte-1t7wnrm{display:grid;grid-template-columns:32px 1fr auto 1fr 32px;align-items:center;padding:6px 10px;background:var(--s-surface);border-bottom:1px solid var(--s-border);gap:8px;min-height:40px;flex-shrink:0}.header-section.svelte-1t7wnrm{display:flex;align-items:center;justify-content:center}.header-left.svelte-1t7wnrm{justify-content:flex-start}.header-left-mid.svelte-1t7wnrm{justify-content:flex-start;gap:4px}.header-center.svelte-1t7wnrm{justify-content:center}.header-right-mid.svelte-1t7wnrm,.header-right.svelte-1t7wnrm{justify-content:flex-end}.close-button.svelte-1t7wnrm{width:32px;height:32px;display:flex;align-items:center;justify-content:center;background:transparent;border:1px solid var(--s-border);border-radius:8px;cursor:pointer;font-size:16px;color:var(--s-text-muted);transition:all .15s;flex-shrink:0}.close-button.svelte-1t7wnrm:hover{background:var(--s-tint-danger-bg);border-color:var(--s-tint-danger-fg);color:var(--s-tint-danger-fg)}.progress.svelte-1t7wnrm{font-size:12px;color:var(--s-text-muted);font-weight:500}.nav-bar.svelte-1t7wnrm{display:grid;grid-template-columns:repeat(2,1fr);gap:8px;width:100%;box-sizing:border-box}.nav-button.svelte-1t7wnrm{display:flex;align-items:center;justify-content:center;gap:6px;height:52px;border:none;border-radius:10px;background:linear-gradient(135deg,#6b7280,#4b5563);color:#fff;cursor:pointer;font-size:13px;font-weight:600;transition:all .2s;-webkit-tap-highlight-color:transparent;touch-action:manipulation;user-select:none;-webkit-user-select:none}.nav-button.svelte-1t7wnrm:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 2px 8px #0003}.nav-button.svelte-1t7wnrm:active:not(:disabled){transform:translateY(0)}.nav-button.svelte-1t7wnrm:disabled{opacity:.4;cursor:not-allowed}.flip-button.svelte-1t7wnrm{display:flex;align-items:center;gap:4px;padding:4px 12px;background:var(--s-accent);color:var(--s-accent-text);border:none;border-radius:16px;cursor:pointer;font-size:12px;font-weight:600;text-transform:uppercase;transition:all .2s}.flip-button.svelte-1t7wnrm:hover:not(:disabled){background:var(--s-accent-hover);transform:scale(1.02)}.flip-button.svelte-1t7wnrm:disabled{opacity:.5;cursor:not-allowed}.flip-button.editing.svelte-1t7wnrm{background:#f59e0b;color:#fff}.side-indicator.svelte-1t7wnrm{font-size:11px;letter-spacing:.5px}.flip-icon.svelte-1t7wnrm{width:14px;height:14px;fill:currentColor}.card-actions.svelte-1t7wnrm{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:8px 12px;background:var(--s-surface);border-bottom:1px solid 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var(--s-accent);outline-offset:2px}.action-btn.svelte-1t7wnrm:disabled{cursor:default}.action-btn-media.svelte-1t7wnrm:not(:disabled):hover,.action-btn-edit.svelte-1t7wnrm:not(:disabled):hover{background:var(--s-tint-neutral-bg);border-color:var(--s-accent);color:var(--s-accent)}.action-btn-delete.svelte-1t7wnrm:not(:disabled):hover{background:var(--s-tint-danger-bg);border-color:var(--s-tint-danger-fg);color:var(--s-tint-danger-fg)}.action-spinner.svelte-1t7wnrm{width:20px;height:20px;border:2px solid var(--s-border);border-top-color:var(--s-accent);border-radius:50%;animation:svelte-1t7wnrm-action-spin .7s linear infinite}@keyframes svelte-1t7wnrm-action-spin{to{transform:rotate(360deg)}}.deck-name.svelte-1t7wnrm{font-size:14px;font-weight:700;color:var(--s-text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:180px}.editing-label.svelte-1t7wnrm{color:var(--s-tint-warning-fg);font-weight:600;font-size:14px}.unsaved-label.svelte-1t7wnrm{color:var(--s-tint-danger-fg);font-weight:500;font-size:14px;animation:svelte-1t7wnrm-pulse 2s infinite}.card-container.svelte-1t7wnrm{display:flex;flex-direction:column;height:100%;overflow:hidden;background:var(--s-surface)}.card-main.svelte-1t7wnrm{flex:1;display:flex;flex-direction:column;overflow:hidden;min-height:0;padding:12px}.media-zone.svelte-1t7wnrm{flex-shrink:0;display:flex;justify-content:center;align-items:center;margin-bottom:8px}.content-zone.svelte-1t7wnrm{flex:1;min-height:0;overflow-y:auto;overflow-x:hidden;-webkit-overflow-scrolling:touch}.card-text.svelte-1t7wnrm{font-size:16px;line-height:1.6;padding:16px;background:var(--s-surface-2);border-radius:8px;min-height:100px;overflow-y:auto;overflow-x:hidden;-webkit-overflow-scrolling:touch;max-height:100%;word-wrap:break-word;overflow-wrap:break-word;color:var(--s-text)}.card-text.svelte-1t7wnrm>em:only-child{color:var(--s-text-subtle);font-style:italic}.card-footer.svelte-1t7wnrm{flex-shrink:0;padding:8px 12px;background:var(--s-surface);border-top:1px solid 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