:root {
    /* 调色板 - Zinc */
    --zinc-950: #09090b;
    --zinc-900: #18181b;
    --zinc-800: #27272a;
    --zinc-700: #3f3f46;
    --zinc-600: #52525b;
    --zinc-500: #71717a;
    --zinc-400: #a1a1aa;
    --zinc-300: #d4d4d8;
    --zinc-200: #e4e4e7;
    --zinc-100: #f4f4f5;
    --white: #ffffff;
    
    /* 品牌色 */
    --indigo-600: #4f46e5;
    --indigo-500: #6366f1;
    --purple-600: #9333ea;
    --purple-500: #a855f7;
    
    /* 状态色 */
    --red-500: #ef4444;
    --green-500: #22c55e;
    --orange-400: #fb923c;
    --blue-500: #3b82f6;
    
    /* 语义化变量 */
    --bg-page: var(--zinc-950);
    --bg-panel: var(--zinc-900);
    --bg-panel-transparent: rgba(24, 24, 27, 0.95);
    --bg-viewer: #101012;
    --bg-input: var(--zinc-950);
    --bg-element: var(--zinc-800);
    --bg-overlay: rgba(0, 0, 0, 0.7);
    
    --border-color: var(--zinc-800);
    
    --text-main: var(--zinc-200);
    --text-muted: var(--zinc-500);
    --text-placeholder: var(--zinc-600);
    --text-accent: var(--indigo-500);
    
    --shadow-color: rgba(0, 0, 0, 0.25);
    --logo-bg: linear-gradient(to bottom right, var(--indigo-500), var(--purple-600));
}

/* 浅色模式覆盖 */
[data-theme="light"] {
    --bg-page: var(--white);
    --bg-panel: var(--zinc-100);
    --bg-panel-transparent: rgba(255, 255, 255, 0.95);
    --bg-viewer: var(--zinc-200);
    --bg-input: var(--white);
    --bg-element: var(--zinc-200);
    --bg-overlay: rgba(255, 255, 255, 0.85);
    
    --border-color: var(--zinc-300);
    
    --text-main: var(--zinc-900);
    --text-muted: var(--zinc-500);
    --text-placeholder: var(--zinc-400);
    --text-accent: var(--indigo-600);
    
    --shadow-color: rgba(0, 0, 0, 0.1);
}

* {
    box-sizing: border-box;
    transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease;
}

body {
    background-color: var(--bg-page);
    color: var(--text-main);
    font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    margin: 0;
    height: 100vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* --- 工具类 --- */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-1 { flex: 1; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-2 { gap: 0.5rem; }
.gap-4 { gap: 1rem; }
.w-full { width: 100%; }
.h-full { height: 100%; }
.hidden { display: none !important; }
.relative { position: relative; }
.absolute { position: absolute; }
.inset-0 { top: 0; right: 0; bottom: 0; left: 0; }
.cursor-pointer { cursor: pointer; }
.overflow-hidden { overflow: hidden; }
.overflow-y-auto { overflow-y: auto; }
.text-xs { font-size: 0.75rem; }
.text-sm { font-size: 0.875rem; }
.font-bold { font-weight: 700; }
.font-medium { font-weight: 500; }

/* 滚动条 */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* --- 组件 --- */

/* 顶部导航 */
.app-header {
    height: 64px;
    padding: 0 1.5rem;
    border-bottom: 1px solid var(--border-color);
    background-color: var(--bg-page);
    flex-shrink: 0;
    z-index: 40;
}

.logo-box {
    background: var(--logo-bg);
    padding: 0.5rem;
    border-radius: 0.5rem;
    box-shadow: 0 4px 6px -1px var(--shadow-color);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    color: white;
}

.btn-header {
    padding: 0.5rem;
    color: var(--text-muted);
    border-radius: 0.5rem;
    background: transparent;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.btn-header:hover { color: var(--text-main); background-color: var(--bg-element); }

/* 输入框 */
.input-field, .select-field, .textarea-field {
    width: 100%;
    background-color: var(--bg-input);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    border-radius: 0.5rem;
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
    outline: none;
}
.input-field:focus, .select-field:focus, .textarea-field:focus {
    border-color: var(--text-accent);
    box-shadow: 0 0 0 1px var(--text-accent);
}
.textarea-field { height: 8rem; resize: none; }
.input-field:disabled { opacity: 0.7; cursor: not-allowed; }

/* 按钮 */
.btn-primary {
    background-color: var(--indigo-600);
    color: white;
    border: none;
    border-radius: 0.5rem;
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
}
.btn-primary:hover { background-color: var(--indigo-500); }

.btn-generate {
    width: 100%;
    padding: 0.75rem;
    border-radius: 0.75rem;
    font-weight: 600;
    background: linear-gradient(to right, var(--indigo-600), var(--purple-600));
    color: white;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    box-shadow: 0 4px 6px -1px var(--shadow-color);
}
.btn-generate:hover:not(:disabled) { filter: brightness(1.1); }
.btn-generate:disabled { opacity: 0.7; cursor: not-allowed; filter: grayscale(0.5); }

.btn-chip {
    font-size: 0.75rem;
    padding: 0.25rem 0.75rem;
    background-color: var(--bg-element);
    color: var(--text-muted);
    border-radius: 9999px;
    border: 1px solid var(--border-color);
    cursor: pointer;
}
.btn-chip:hover { border-color: var(--text-accent); color: var(--text-main); }

/* 标签页 */
.tab-group {
    background-color: var(--bg-input);
    padding: 0.25rem;
    border-radius: 0.75rem;
    display: flex;
    border: 1px solid var(--border-color);
}
.tab-btn {
    flex: 1;
    padding: 0.5rem;
    font-size: 0.875rem;
    border-radius: 0.5rem;
    border: none;
    cursor: pointer;
    background: transparent;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}
.tab-btn.active {
    background-color: var(--bg-element);
    color: var(--text-main);
    box-shadow: 0 1px 2px 0 var(--shadow-color);
}
[data-theme="light"] .tab-btn.active { background-color: var(--white); border: 1px solid var(--zinc-300); }

.tab-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    text-decoration: line-through;
}

/* 布局 */
.main-grid {
    display: grid;
    grid-template-columns: 20rem 1fr;
    height: calc(100vh - 64px);
    overflow: hidden;
}
@media (max-width: 768px) { .main-grid { grid-template-columns: 1fr; } }

.sidebar {
    background-color: var(--bg-panel-transparent);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
}

.viewer-area {
    background-color: var(--bg-viewer);
    position: relative;
    display: flex;
    flex-direction: column;
    height: 100%;
}

/* 任务列表 */
.task-list-container {
    flex: 1;
    overflow-y: auto;
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-input);
}

.task-item {
    padding: 0.75rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
    transition: background-color 0.2s;
    position: relative;
}
.task-item:hover { background-color: var(--bg-element); }
.task-item.active { background-color: var(--bg-element); border-left: 3px solid var(--text-accent); }

.task-icon {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 0.375rem;
    background-color: var(--bg-element);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-size: 1rem;
    flex-shrink: 0;
    overflow: hidden; /* Added to clip image */
}

.task-thumbnail {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.task-info { flex: 1; min-width: 0; }
.task-title { font-size: 0.875rem; color: var(--text-main); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; font-weight: 500; }
.task-meta { font-size: 0.75rem; color: var(--text-muted); display: flex; justify-content: space-between; margin-top: 0.125rem; }

.status-badge {
    width: 0.5rem; height: 0.5rem; border-radius: 50%; display: inline-block;
}
.status-running { background-color: var(--blue-500); box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2); animation: pulse 1.5s infinite; }
.status-success { background-color: var(--green-500); }
.status-failed { background-color: var(--red-500); }
.status-queued { background-color: var(--orange-400); }

/* 删除按钮 */
.btn-delete-task {
    opacity: 0;
    background: transparent;
    border: none;
    color: var(--text-muted);
    padding: 0.5rem;
    border-radius: 0.25rem;
    cursor: pointer;
    transition: all 0.2s;
    position: absolute;
    right: 0.5rem;
    top: 50%;
    transform: translateY(-50%);
}
.task-item:hover .btn-delete-task { opacity: 1; background-color: var(--bg-input); }
.btn-delete-task:hover { color: var(--red-500); background-color: rgba(239, 68, 68, 0.1); }

/* 消息通知 (Toast) */
.toast-container {
    position: fixed;
    top: 5rem;
    right: 1.5rem;
    z-index: 50;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    pointer-events: none;
}
.toast {
    pointer-events: auto;
    background-color: var(--bg-panel);
    border: 1px solid var(--border-color);
    padding: 0.75rem 1rem;
    border-radius: 0.5rem;
    box-shadow: 0 10px 15px -3px var(--shadow-color);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    min-width: 18rem;
    animation: slideIn 0.3s ease-out;
    color: var(--text-main);
}
@keyframes slideIn {
    from { opacity: 0; transform: translateX(20px); }
    to { opacity: 1; transform: translateX(0); }
}
.toast-icon { font-size: 1.125rem; }
.toast-success .toast-icon { color: var(--green-500); }
.toast-error .toast-icon { color: var(--red-500); }
.toast-info .toast-icon { color: var(--blue-500); }

/* 其他 UI 组件 */
.status-pill {
    background-color: var(--bg-panel-transparent);
    backdrop-filter: blur(4px);
    padding: 0.375rem 0.75rem;
    border-radius: 0.5rem;
    border: 1px solid var(--border-color);
    color: var(--text-muted);
}

.progress-bar-mini {
    height: 2px;
    width: 100%;
    background-color: var(--bg-element);
    margin-top: 4px;
    border-radius: 1px;
    overflow: hidden;
}
.progress-fill {
    height: 100%;
    background-color: var(--indigo-600);
    transition: width 0.3s;
}

/* 工具栏 */
.viewer-toolbar {
    position: absolute;
    bottom: 1.5rem;
    right: 1.5rem;
    display: flex;
    gap: 0.75rem;
    z-index: 50; /* 确保高 z-index */
    background-color: var(--bg-panel-transparent);
    padding: 0.5rem;
    border-radius: 0.5rem;
    border: 1px solid var(--border-color);
    backdrop-filter: blur(8px);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.btn-toolbar {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    border-radius: 0.375rem;
    border: 1px solid var(--border-color);
    background-color: var(--bg-element);
    color: var(--text-main);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.2s;
}
.btn-toolbar:hover {
    background-color: var(--indigo-600);
    color: white;
    border-color: var(--indigo-600);
}

/* 渲染模式切换器 */
.render-mode-switch {
    display: flex;
    background-color: var(--bg-element);
    border-radius: 0.375rem;
    overflow: hidden;
    border: 1px solid var(--border-color);
}
.render-mode-btn {
    padding: 0.375rem 0.75rem;
    font-size: 0.75rem;
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    border-right: 1px solid var(--border-color);
}
.render-mode-btn:last-child { border-right: none; }
.render-mode-btn.active {
    background-color: var(--indigo-600);
    color: white;
}

.app-header { z-index: 40; } 
.top-bar-overlay { z-index: 40; } /* 保持顶部栏在上层 */