/* 中小学带量食谱系统 - 共享样式 (2025 Modern Design) */

:root {
    /* 主题色 */
    --primary: #2563eb;
    --primary-light: #3b82f6;
    --primary-dark: #1d4ed8;
    --secondary: #10b981;
    --accent: #f59e0b;
    --danger: #ef4444;
    --warning: #f97316;
    --info: #06b6d4;

    /* 中性色 */
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;

    /* 功能色 */
    --success: #22c55e;
    --error: #ef4444;
    --warning-yellow: #eab308;

    /* 渐变系统 */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-accent: linear-gradient(135deg, #3b82f6, #06b6d4);
    --gradient-success: linear-gradient(135deg, #22c55e, #10b981);
    --gradient-warm: linear-gradient(135deg, #f59e0b, #ef4444);
    --gradient-surface: linear-gradient(135deg, #f9fafb 0%, #f3f4f6 100%);

    /* 玻璃拟态 */
    --glass-bg: rgba(255, 255, 255, 0.72);
    --glass-border: rgba(255, 255, 255, 0.18);
    --glass-blur: blur(20px) saturate(180%);

    /* 阴影 - 升级为多层柔和阴影 */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.04);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.06), 0 1px 2px -1px rgb(0 0 0 / 0.06);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.07), 0 2px 4px -2px rgb(0 0 0 / 0.05);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.08), 0 4px 6px -4px rgb(0 0 0 / 0.04);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.08), 0 8px 10px -6px rgb(0 0 0 / 0.04);
    --shadow-soft: 0 4px 24px rgba(0,0,0,0.06);
    --shadow-card: 0 8px 32px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.04);
    --shadow-float: 0 16px 48px rgba(0,0,0,0.12);

    /* 圆角 */
    --radius-sm: 4px;
    --radius: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    /* 字体 */
    --font-sans: "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

    /* 动画 */
    --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
    --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== Reset & Base ===== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    font-size: 14px;
    line-height: 1.6;
    color: var(--gray-800);
    background-color: var(--gray-50);
}

img, picture, video, svg {
    max-width: 100%;
    height: auto;
    display: block;
}

input, button, textarea, select {
    font: inherit;
}

a { color: inherit; }

/* ===== 布局 ===== */
.layout {
    display: flex;
    min-height: 100vh;
}

/* ===== 侧边栏 ===== */
.sidebar {
    width: 260px;
    background: rgba(17, 24, 39, 0.96);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    backdrop-filter: blur(20px) saturate(180%);
    color: white;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
    z-index: 100;
    border-right: 1px solid rgba(255,255,255,0.06);
}

.sidebar-header {
    padding: 20px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient-accent);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.logo-text {
    font-size: 16px;
    font-weight: 700;
    line-height: 1.3;
}

.logo-subtext {
    font-size: 12px;
    color: var(--gray-400);
}

.sidebar-nav {
    padding: 16px 12px;
}

.nav-section {
    margin-bottom: 24px;
}

.nav-section-title {
    font-size: 11px;
    text-transform: uppercase;
    color: var(--gray-500);
    padding: 0 12px;
    margin-bottom: 8px;
    letter-spacing: 0.5px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border-radius: var(--radius);
    color: var(--gray-300);
    text-decoration: none;
    transition: all 0.2s var(--ease-smooth);
    cursor: pointer;
    margin-bottom: 4px;
    position: relative;
}

.nav-item:hover {
    background: rgba(255,255,255,0.06);
    color: white;
}

.nav-item.active {
    background: linear-gradient(135deg, rgba(37,99,235,0.9), rgba(59,130,246,0.7));
    color: white;
    box-shadow: 0 4px 12px rgba(37,99,235,0.3);
}

.nav-item-icon {
    width: 20px;
    text-align: center;
}

.nav-item-badge {
    margin-left: auto;
    background: var(--danger);
    color: white;
    font-size: 11px;
    padding: 2px 6px;
    border-radius: var(--radius-full);
}

/* ===== 主内容区 ===== */
.main-content {
    flex: 1;
    margin-left: 260px;
    min-height: 100vh;
}

/* ===== 顶部导航 ===== */
.top-header {
    height: 64px;
    background: rgba(255, 255, 255, 0.8);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    position: sticky;
    top: 0;
    z-index: 50;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--gray-500);
    font-size: 14px;
}

.breadcrumb a {
    color: var(--gray-600);
    text-decoration: none;
    transition: color 0.2s;
}

.breadcrumb a:hover { color: var(--primary); }

.breadcrumb-separator { color: var(--gray-400); }

.header-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.header-btn {
    width: 36px;
    height: 36px;
    border-radius: var(--radius);
    border: none;
    background: var(--gray-100);
    color: var(--gray-600);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    position: relative;
}

.header-btn:hover { background: var(--gray-200); }

.header-btn-badge {
    position: absolute;
    top: -2px;
    right: -2px;
    width: 8px;
    height: 8px;
    background: var(--danger);
    border-radius: 50%;
}

.user-menu {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 6px 12px;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all 0.2s;
}

.user-menu:hover { background: var(--gray-100); }

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    font-size: 13px;
}

.user-info { line-height: 1.3; }
.user-name { font-weight: 500; font-size: 13px; }
.user-role { font-size: 11px; color: var(--gray-500); }

/* ===== 页面内容 ===== */
.page-content { padding: 24px; }

.page-header { margin-bottom: 24px; }

.page-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 8px;
}

.page-subtitle {
    color: var(--gray-500);
    font-size: 14px;
}

.page-actions {
    display: flex;
    gap: 12px;
    margin-top: 16px;
}

/* ===== 卡片 ===== */
.card {
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-soft);
    border: 1px solid rgba(0,0,0,0.04);
    transition: transform 0.3s var(--ease-bounce), box-shadow 0.3s var(--ease-smooth);
}

.card:hover {
    box-shadow: var(--shadow-card);
    transform: translateY(-2px);
}

.card-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--gray-900);
}

.card-subtitle {
    font-size: 13px;
    color: var(--gray-500);
    margin-top: 4px;
}

.card-body { padding: 20px; }

.card-footer {
    padding: 12px 20px;
    border-top: 1px solid var(--gray-200);
    background: var(--gray-50);
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

/* 玻璃卡片 */
.glass-card {
    background: var(--glass-bg);
    -webkit-backdrop-filter: var(--glass-blur);
    backdrop-filter: var(--glass-blur);
    border-radius: var(--radius-xl);
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow-soft);
}

.glass-dark {
    background: rgba(30, 41, 59, 0.75);
    -webkit-backdrop-filter: var(--glass-blur);
    backdrop-filter: var(--glass-blur);
    border: 1px solid rgba(255,255,255,0.08);
}

/* ===== 统计卡片 ===== */
.stat-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: 20px;
    box-shadow: var(--shadow-soft);
    border: 1px solid rgba(0,0,0,0.04);
    display: flex;
    align-items: flex-start;
    gap: 16px;
    transition: transform 0.3s var(--ease-bounce), box-shadow 0.3s var(--ease-smooth);
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-card);
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    flex-shrink: 0;
}

.stat-icon.blue { background: linear-gradient(135deg, #dbeafe, #bfdbfe); }
.stat-icon.green { background: linear-gradient(135deg, #d1fae5, #a7f3d0); }
.stat-icon.orange { background: linear-gradient(135deg, #ffedd5, #fed7aa); }
.stat-icon.red { background: linear-gradient(135deg, #fee2e2, #fecaca); }
.stat-icon.purple { background: linear-gradient(135deg, #f3e8ff, #e9d5ff); }
.stat-icon.cyan { background: linear-gradient(135deg, #cffafe, #a5f3fc); }

.stat-content { flex: 1; }

.stat-label {
    font-size: 13px;
    color: var(--gray-500);
    margin-bottom: 4px;
}

.stat-value {
    font-size: 28px;
    font-weight: 800;
    color: var(--gray-900);
    line-height: 1.2;
}

.stat-change {
    font-size: 12px;
    margin-top: 4px;
    display: flex;
    align-items: center;
    gap: 4px;
    font-weight: 500;
}

.stat-change.up { color: var(--success); }
.stat-change.down { color: var(--danger); }

/* ===== 按钮 ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s var(--ease-smooth);
    border: none;
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.btn:active { transform: scale(0.97); }

.btn-primary {
    background: var(--primary);
    color: white;
    box-shadow: 0 2px 8px rgba(37,99,235,0.25);
}

.btn-primary:hover {
    background: var(--primary-dark);
    box-shadow: 0 4px 16px rgba(37,99,235,0.35);
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--gray-100);
    color: var(--gray-700);
    border: 1px solid var(--gray-300);
}

.btn-secondary:hover { background: var(--gray-200); }

.btn-success {
    background: var(--success);
    color: white;
    box-shadow: 0 2px 8px rgba(34,197,94,0.25);
}

.btn-success:hover {
    box-shadow: 0 4px 16px rgba(34,197,94,0.35);
    transform: translateY(-1px);
}

.btn-danger {
    background: var(--danger);
    color: white;
    box-shadow: 0 2px 8px rgba(239,68,68,0.25);
}

.btn-danger:hover {
    box-shadow: 0 4px 16px rgba(239,68,68,0.35);
    transform: translateY(-1px);
}

.btn-ghost {
    background: transparent;
    color: var(--gray-600);
}

.btn-ghost:hover { background: var(--gray-100); }

.btn-sm { padding: 6px 12px; font-size: 13px; }
.btn-lg { padding: 12px 24px; font-size: 15px; }
.btn-icon { width: 36px; height: 36px; padding: 0; }

/* ===== 表格 ===== */
.table-container { overflow-x: auto; }

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

.data-table th,
.data-table td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--gray-200);
}

.data-table th {
    font-weight: 600;
    color: var(--gray-600);
    background: var(--gray-50);
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.data-table tbody tr {
    transition: background 0.15s ease;
}

.data-table tbody tr:hover { background: rgba(37, 99, 235, 0.03); }

.data-table .actions {
    display: flex;
    gap: 8px;
}

/* ===== 标签 ===== */
.tag {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    border-radius: var(--radius-full);
    font-size: 12px;
    font-weight: 500;
}

.tag-blue { background: #dbeafe; color: #1e40af; }
.tag-green { background: #d1fae5; color: #065f46; }
.tag-orange { background: #ffedd5; color: #92400e; }
.tag-red { background: #fee2e2; color: #991b1b; }
.tag-purple { background: #f3e8ff; color: #6b21a8; }
.tag-gray { background: var(--gray-100); color: var(--gray-600); }

/* ===== 表单 ===== */
.form-group { margin-bottom: 16px; }

.form-label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--gray-700);
    margin-bottom: 6px;
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    font-size: 14px;
    transition: all 0.2s var(--ease-smooth);
    background: white;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-textarea {
    resize: vertical;
    min-height: 80px;
}

/* ===== 搜索框 ===== */
.search-box { position: relative; }

.search-box input {
    padding-left: 36px;
    width: 280px;
}

.search-box-icon {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray-400);
}

/* ===== 网格布局 ===== */
.grid {
    display: grid;
    gap: 20px;
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-5 { grid-template-columns: repeat(5, 1fr); }
.grid-6 { grid-template-columns: repeat(6, 1fr); }

/* ===== 预警级别 ===== */
.alert-level-1 {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.alert-level-2 {
    background: #fef3c7;
    color: #92400e;
    border: 1px solid #fde68a;
}

.alert-level-3 {
    background: #d1fae5;
    color: #065f46;
    border: 1px solid #a7f3d0;
}

/* ===== 进度条 ===== */
.progress-bar {
    height: 8px;
    background: var(--gray-200);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    border-radius: var(--radius-full);
    transition: width 0.6s var(--ease-bounce);
}

.progress-fill.blue { background: linear-gradient(90deg, #3b82f6, #60a5fa); }
.progress-fill.green { background: linear-gradient(90deg, #22c55e, #4ade80); }
.progress-fill.orange { background: linear-gradient(90deg, #f59e0b, #fbbf24); }
.progress-fill.red { background: linear-gradient(90deg, #ef4444, #f87171); }

/* ===== 营养标签 ===== */
.nutrition-tag {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    font-size: 11px;
    font-weight: 500;
}

.nutrition-tag.energy { background: #fef3c7; color: #92400e; }
.nutrition-tag.protein { background: #dbeafe; color: #1e40af; }
.nutrition-tag.fat { background: #fee2e2; color: #991b1b; }
.nutrition-tag.carbs { background: #d1fae5; color: #065f46; }

/* ===== 菜品卡片 ===== */
.dish-card {
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-soft);
    border: 1px solid rgba(0,0,0,0.04);
    transition: all 0.3s var(--ease-bounce);
}

.dish-card:hover {
    box-shadow: var(--shadow-card);
    transform: translateY(-4px);
}

.dish-image {
    width: 100%;
    height: 160px;
    object-fit: cover;
    background: var(--gray-100);
}

.dish-content { padding: 16px; }

.dish-name {
    font-weight: 600;
    font-size: 15px;
    color: var(--gray-900);
    margin-bottom: 8px;
}

.dish-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 12px;
}

.dish-nutrition {
    display: flex;
    gap: 12px;
    font-size: 12px;
    color: var(--gray-500);
}

.dish-nutrition-item {
    display: flex;
    align-items: center;
    gap: 4px;
}

/* ===== 日历样式 ===== */
.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 8px;
}

.calendar-header {
    text-align: center;
    padding: 12px;
    font-weight: 600;
    color: var(--gray-600);
    font-size: 13px;
}

.calendar-day {
    min-height: 120px;
    background: white;
    border-radius: var(--radius);
    padding: 12px;
    border: 1px solid var(--gray-200);
    transition: all 0.2s ease;
}

.calendar-day:hover {
    border-color: var(--primary-light);
    box-shadow: 0 2px 8px rgba(37,99,235,0.1);
}

.calendar-day-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.calendar-day-number {
    font-weight: 600;
    color: var(--gray-700);
}

.calendar-day.today .calendar-day-number {
    background: var(--primary);
    color: white;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
}

/* ===== 模态框 ===== */
.modal-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.4);
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal {
    background: white;
    border-radius: var(--radius-xl);
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow: hidden;
    box-shadow: var(--shadow-float);
}

.modal-header {
    padding: 20px;
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-title { font-size: 18px; font-weight: 700; }

.modal-close {
    width: 32px;
    height: 32px;
    border-radius: var(--radius);
    border: none;
    background: var(--gray-100);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.modal-close:hover { background: var(--gray-200); }

.modal-body {
    padding: 20px;
    overflow-y: auto;
    max-height: 60vh;
}

.modal-footer {
    padding: 16px 20px;
    border-top: 1px solid var(--gray-200);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

/* ===== 分页 ===== */
.pagination {
    display: flex;
    align-items: center;
    gap: 8px;
}

.page-btn {
    min-width: 32px;
    height: 32px;
    padding: 0 8px;
    border: 1px solid var(--gray-300);
    background: white;
    border-radius: var(--radius);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    transition: all 0.2s;
}

.page-btn:hover { background: var(--gray-100); }

.page-btn.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
    box-shadow: 0 2px 8px rgba(37,99,235,0.25);
}

.page-btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* ===== 空状态 ===== */
.empty-state { text-align: center; padding: 60px 20px; }
.empty-icon { font-size: 64px; margin-bottom: 16px; opacity: 0.5; }
.empty-title { font-size: 18px; font-weight: 600; color: var(--gray-700); margin-bottom: 8px; }
.empty-desc { color: var(--gray-500); margin-bottom: 20px; }

/* ===== 工具类 ===== */
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-col { display: flex; flex-direction: column; }
.gap-8 { gap: 8px; }
.gap-12 { gap: 12px; }
.gap-16 { gap: 16px; }
.gap-20 { gap: 20px; }
.mb-8 { margin-bottom: 8px; }
.mb-12 { margin-bottom: 12px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.text-sm { font-size: 13px; }
.text-xs { font-size: 12px; }
.font-bold { font-weight: 700; }
.text-muted { color: var(--gray-500); }
.text-center { text-align: center; }

/* ===== 响应式 ===== */
@media (max-width: 1280px) {
    .grid-4 { grid-template-columns: repeat(3, 1fr); }
    .grid-5 { grid-template-columns: repeat(3, 1fr); }
    .grid-6 { grid-template-columns: repeat(4, 1fr); }
}

@media (max-width: 1024px) {
    .sidebar { width: 200px; }
    .main-content { margin-left: 200px; }
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .sidebar { transform: translateX(-100%); }
    .main-content { margin-left: 0; }
    .grid-2, .grid-3, .grid-4, .grid-5, .grid-6 { grid-template-columns: 1fr; }
}

@media (max-width: 320px) {
    body { font-size: 13px; }
    .page-content { padding: 12px; }
}

@media (min-width: 1920px) {
    .page-content { max-width: 1600px; margin: 0 auto; }
}

/* ===== 动画 ===== */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes floatUp {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

@keyframes pulseSoft {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.animate-fadeIn { animation: fadeIn 0.3s ease; }
.animate-slideUp { animation: slideUp 0.4s var(--ease-bounce); }
.animate-floatUp { animation: floatUp 0.5s var(--ease-bounce); }

/* 错落入场 */
.stagger > * { animation: floatUp 0.4s var(--ease-bounce) both; }
.stagger > *:nth-child(1) { animation-delay: 0.05s; }
.stagger > *:nth-child(2) { animation-delay: 0.1s; }
.stagger > *:nth-child(3) { animation-delay: 0.15s; }
.stagger > *:nth-child(4) { animation-delay: 0.2s; }
.stagger > *:nth-child(5) { animation-delay: 0.25s; }
.stagger > *:nth-child(6) { animation-delay: 0.3s; }

/* 骨架屏 */
.skeleton {
    background: linear-gradient(90deg, var(--gray-200) 25%, var(--gray-100) 50%, var(--gray-200) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--radius);
}

/* ===== 滚动条 ===== */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--gray-300); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--gray-400); }

/* ===== 聚焦可见性 ===== */
:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* 屏幕阅读器 */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}