/* ========================================
   减脂食谱生成器 - 全局样式 v3
   Apple Liquid Glass 液态玻璃主题
   ======================================== */

/* ---------- CSS Variables (Light) ---------- */
:root {
    /* Primary - 翡翠绿 */
    --primary: #34d399;
    --primary-hover: #10b981;
    --primary-light: rgba(52, 211, 153, 0.12);
    --primary-50: rgba(52, 211, 153, 0.06);
    --primary-dark: #059669;
    --primary-glow: rgba(52, 211, 153, 0.35);

    /* Accent - 珊瑚橙 */
    --accent: #fb923c;
    --accent-hover: #f97316;
    --accent-light: rgba(251, 146, 60, 0.12);
    --accent-dark: #ea580c;
    --accent-glow: rgba(251, 146, 60, 0.35);

    /* Semantic Colors */
    --success: #34d399;
    --warning: #fbbf24;
    --danger: #f87171;
    --info: #60a5fa;

    /* Glass System */
    --glass-bg: rgba(255, 255, 255, 0.55);
    --glass-bg-solid: rgba(255, 255, 255, 0.72);
    --glass-border: rgba(255, 255, 255, 0.65);
    --glass-highlight: rgba(255, 255, 255, 0.9);
    --glass-inset: inset 0 4px 20px rgba(255, 255, 255, 0.35);
    --glass-shadow: 0 8px 32px rgba(31, 38, 135, 0.1), 0 2px 8px rgba(0, 0, 0, 0.04);
    --glass-shadow-hover: 0 12px 40px rgba(31, 38, 135, 0.15), 0 4px 12px rgba(0, 0, 0, 0.06);
    --glass-blur: blur(16px) saturate(180%);
    --glass-blur-light: blur(8px) saturate(150%);

    /* Surface */
    --bg: #eef2f7;
    --bg-gradient: linear-gradient(135deg, #dfe9f3 0%, #e8f0e8 30%, #f5efe6 60%, #e8edf5 100%);
    --bg-hover: rgba(0, 0, 0, 0.03);
    --card: rgba(255, 255, 255, 0.5);
    --card-hover: rgba(255, 255, 255, 0.65);
    --border: rgba(0, 0, 0, 0.06);
    --border-light: rgba(0, 0, 0, 0.03);

    /* Text */
    --text: #1a2332;
    --text-secondary: #5a6b7f;
    --text-muted: #8b99a8;
    --text-inverse: #ffffff;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.1);

    /* Radius - 液态玻璃偏大圆角 */
    --radius-sm: 8px;
    --radius: 12px;
    --radius-lg: 18px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;

    /* Transition - 苹果风格弹性 */
    --transition: all 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --transition-slow: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --transition-bounce: all 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);

    /* Navbar */
    --navbar-bg: rgba(255, 255, 255, 0.6);
    --navbar-border: rgba(255, 255, 255, 0.5);

    /* Meal type colors */
    --meal-breakfast: #f59e0b;
    --meal-breakfast-bg: rgba(245, 158, 11, 0.1);
    --meal-lunch: #10b981;
    --meal-lunch-bg: rgba(16, 185, 129, 0.1);
    --meal-dinner: #6366f1;
    --meal-dinner-bg: rgba(99, 102, 241, 0.1);

    /* Nutrition colors */
    --protein-color: #3b82f6;
    --fat-color: #f59e0b;
    --carbs-color: #10b981;

    /* Glass Colors (for cards/hero) */
    --glass-emerald: linear-gradient(135deg, rgba(52, 211, 153, 0.15), rgba(16, 185, 129, 0.08));
    --glass-coral: linear-gradient(135deg, rgba(251, 146, 60, 0.12), rgba(249, 115, 22, 0.06));
    --glass-indigo: linear-gradient(135deg, rgba(99, 102, 241, 0.12), rgba(139, 92, 246, 0.06));
    --glass-amber: linear-gradient(135deg, rgba(245, 158, 11, 0.12), rgba(251, 191, 36, 0.06));
}

/* ---------- Dark Mode (Liquid Glass) ---------- */
[data-theme="dark"] {
    --primary: #6ee7b7;
    --primary-hover: #34d399;
    --primary-light: rgba(110, 231, 183, 0.12);
    --primary-50: rgba(110, 231, 183, 0.06);
    --primary-dark: #a7f3d0;
    --primary-glow: rgba(110, 231, 183, 0.25);

    --accent: #fdba74;
    --accent-hover: #fb923c;
    --accent-light: rgba(253, 186, 116, 0.12);
    --accent-dark: #fed7aa;
    --accent-glow: rgba(253, 186, 116, 0.25);

    --success: #6ee7b7;
    --warning: #fcd34d;
    --danger: #fca5a5;
    --info: #93c5fd;

    --glass-bg: rgba(30, 41, 59, 0.55);
    --glass-bg-solid: rgba(30, 41, 59, 0.72);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-highlight: rgba(255, 255, 255, 0.05);
    --glass-inset: inset 0 4px 20px rgba(255, 255, 255, 0.05);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.3), 0 2px 8px rgba(0, 0, 0, 0.2);
    --glass-shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.4), 0 4px 12px rgba(0, 0, 0, 0.25);

    --bg: #0c1222;
    --bg-gradient: linear-gradient(135deg, #0c1222 0%, #0f1a2e 30%, #131c1e 60%, #0e1325 100%);
    --bg-hover: rgba(255, 255, 255, 0.04);
    --card: rgba(30, 41, 59, 0.5);
    --card-hover: rgba(30, 41, 59, 0.65);
    --border: rgba(255, 255, 255, 0.06);
    --border-light: rgba(255, 255, 255, 0.03);

    --text: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --text-inverse: #0f172a;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.2);
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.35);

    --navbar-bg: rgba(15, 23, 42, 0.65);
    --navbar-border: rgba(255, 255, 255, 0.06);

    --meal-breakfast: #fbbf24;
    --meal-breakfast-bg: rgba(251, 191, 36, 0.1);
    --meal-lunch: #6ee7b7;
    --meal-lunch-bg: rgba(110, 231, 183, 0.1);
    --meal-dinner: #a5b4fc;
    --meal-dinner-bg: rgba(165, 180, 252, 0.1);

    --glass-emerald: linear-gradient(135deg, rgba(110, 231, 183, 0.08), rgba(52, 211, 153, 0.04));
    --glass-coral: linear-gradient(135deg, rgba(253, 186, 116, 0.08), rgba(251, 146, 60, 0.04));
    --glass-indigo: linear-gradient(135deg, rgba(165, 180, 252, 0.08), rgba(139, 92, 246, 0.04));
    --glass-amber: linear-gradient(135deg, rgba(253, 186, 116, 0.08), rgba(251, 191, 36, 0.04));
}

/* ---------- Reset ---------- */
*, *::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: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    background: var(--bg-gradient);
    background-attachment: fixed;
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
    transition: background-color 0.4s, color 0.3s;
    position: relative;
    overflow-x: hidden;
}
/* Liquid Glass 背景装饰光斑 */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        radial-gradient(circle at 15% 25%, rgba(52, 211, 153, 0.12) 0%, transparent 50%),
        radial-gradient(circle at 85% 15%, rgba(99, 102, 241, 0.1) 0%, transparent 45%),
        radial-gradient(circle at 50% 75%, rgba(251, 146, 60, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 75% 60%, rgba(56, 189, 248, 0.08) 0%, transparent 40%);
    pointer-events: none;
    z-index: 0;
}
[data-theme="dark"] body::before {
    background-image:
        radial-gradient(circle at 15% 25%, rgba(52, 211, 153, 0.06) 0%, transparent 50%),
        radial-gradient(circle at 85% 15%, rgba(99, 102, 241, 0.06) 0%, transparent 45%),
        radial-gradient(circle at 50% 75%, rgba(251, 146, 60, 0.04) 0%, transparent 50%),
        radial-gradient(circle at 75% 60%, rgba(56, 189, 248, 0.04) 0%, transparent 40%);
}
.container, header, footer {
    position: relative;
    z-index: 1;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: var(--transition);
}
a:hover { color: var(--primary-hover); }

/* ---------- Header / Navbar ---------- */
.navbar {
    background: var(--navbar-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--glass-border);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: var(--transition);
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.15);
}
.navbar .container {
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}
.navbar .logo {
    font-size: 20px;
    font-weight: 800;
    color: var(--text);
    text-decoration: none;
    letter-spacing: -0.3px;
    display: flex;
    align-items: center;
    gap: 2px;
}
.navbar .logo span {
    color: var(--primary);
}
.navbar nav {
    display: flex;
    align-items: center;
    gap: 4px;
}
.navbar nav a {
    padding: 6px 14px;
    border-radius: var(--radius-full);
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
    white-space: nowrap;
}
.navbar nav a:hover {
    color: var(--text);
    background: var(--bg-hover);
}
.navbar nav a.active {
    color: var(--primary);
    background: var(--primary-light);
    font-weight: 600;
}

/* Dark mode toggle */
.theme-toggle {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    border: 1px solid var(--glass-border);
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur-light);
    -webkit-backdrop-filter: var(--glass-blur-light);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    transition: var(--transition-bounce);
    flex-shrink: 0;
}
.theme-toggle:hover {
    background: var(--primary-light);
    border-color: var(--primary);
    transform: rotate(20deg) scale(1.1);
}

/* ---------- Container ---------- */
.container {
    max-width: 1120px;
    margin: 0 auto;
    padding: var(--space-lg);
}

/* ---------- Cards ---------- */
.card {
    background: var(--glass-bg-solid);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-radius: var(--radius-lg);
    box-shadow: var(--glass-shadow);
    padding: var(--space-lg);
    margin-bottom: var(--space-md);
    border: 1px solid var(--glass-border);
    transition: var(--transition-slow);
    position: relative;
    overflow: hidden;
}
/* 卡片顶部光泽线 */
.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--glass-highlight), transparent);
    pointer-events: none;
}
.card:hover {
    box-shadow: var(--glass-shadow-hover);
    transform: translateY(-1px);
}
.card-title {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-md);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 8px;
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 22px;
    border: none;
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: var(--transition-bounce);
    white-space: nowrap;
    line-height: 1.4;
    position: relative;
    overflow: hidden;
}
.btn:active { transform: scale(0.96); }
.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-hover));
    color: var(--text-inverse);
    box-shadow: 0 2px 12px var(--primary-glow);
}
.btn-primary:hover {
    box-shadow: 0 4px 20px var(--primary-glow);
    color: var(--text-inverse);
    text-decoration: none;
    filter: brightness(1.05);
}
.btn-accent {
    background: linear-gradient(135deg, var(--accent), var(--accent-hover));
    color: #fff;
    box-shadow: 0 2px 12px var(--accent-glow);
}
.btn-accent:hover {
    background: linear-gradient(135deg, var(--accent-hover), var(--accent-dark));
    box-shadow: 0 4px 20px var(--accent-glow);
    color: #fff;
    text-decoration: none;
    filter: brightness(1.05);
}
.btn-outline {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur-light);
    -webkit-backdrop-filter: var(--glass-blur-light);
    border: 1px solid var(--glass-border);
    color: var(--text-secondary);
}
.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-light);
    box-shadow: 0 2px 12px var(--primary-glow);
    text-decoration: none;
}
.btn-danger {
    background: var(--danger);
    color: #fff;
}
.btn-danger:hover {
    background: #dc2626;
    color: #fff;
    text-decoration: none;
}
.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    padding: 8px 14px;
}
.btn-ghost:hover {
    background: var(--bg-hover);
    color: var(--text);
    text-decoration: none;
}
.btn-sm { padding: 6px 14px; font-size: 13px; border-radius: var(--radius-sm); }
.btn-lg { padding: 14px 32px; font-size: 16px; border-radius: var(--radius); }
.btn-xl { padding: 16px 40px; font-size: 17px; border-radius: var(--radius-lg); }
.btn:disabled {
    opacity: 0.45;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

/* ---------- Day Selector ---------- */
.day-selector {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-md);
    margin: var(--space-lg) 0;
}
.day-btn {
    position: relative;
    padding: 24px 16px 20px;
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur-light);
    -webkit-backdrop-filter: var(--glass-blur-light);
    cursor: pointer;
    text-align: center;
    transition: var(--transition-bounce);
    overflow: hidden;
}
.day-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: transparent;
    transition: var(--transition);
}
.day-btn:hover {
    border-color: var(--primary);
    transform: translateY(-3px);
    box-shadow: 0 8px 24px var(--primary-glow);
}
.day-btn:hover::before {
    background: linear-gradient(90deg, var(--primary), var(--primary-hover));
}
.day-btn.selected {
    border-color: var(--primary);
    background: var(--primary-light);
    box-shadow: 0 4px 16px var(--primary-glow);
}
.day-btn.selected::before {
    background: linear-gradient(90deg, var(--primary), var(--primary-hover));
}
.day-btn.disabled {
    opacity: 0.4;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}
.day-btn .num {
    font-size: 32px;
    font-weight: 800;
    color: var(--primary-dark);
    line-height: 1;
}
.day-btn .label {
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 6px;
    font-weight: 500;
}
.day-btn .tag {
    display: inline-block;
    font-size: 11px;
    padding: 2px 8px;
    border-radius: var(--radius-full);
    margin-top: 8px;
    font-weight: 600;
}
.day-btn .tag.free {
    background: var(--primary-light);
    color: var(--primary-dark);
}
.day-btn .tag.paid {
    background: var(--accent-light);
    color: var(--accent-dark);
}

/* ---------- Goal Selector ---------- */
.goal-selector {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: var(--space-md);
    margin: var(--space-md) 0;
}
.goal-btn {
    padding: 18px 14px;
    border: 2px solid var(--border);
    border-radius: var(--radius);
    background: var(--card);
    cursor: pointer;
    text-align: center;
    transition: var(--transition);
}
.goal-btn:hover { border-color: var(--primary); transform: translateY(-1px); }
.goal-btn.selected {
    border-color: var(--primary);
    background: var(--primary-light);
    box-shadow: var(--shadow-md);
}
.goal-btn .icon { font-size: 26px; }
.goal-btn .name { font-size: 14px; font-weight: 600; margin-top: 8px; }
.goal-btn .desc { font-size: 12px; color: var(--text-muted); margin-top: 4px; }

/* ---------- Tag Selector ---------- */
.tag-list {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
    margin: var(--space-md) 0;
}
.tag-btn {
    padding: 8px 18px;
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-full);
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur-light);
    -webkit-backdrop-filter: var(--glass-blur-light);
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    transition: var(--transition-bounce);
    color: var(--text-secondary);
    user-select: none;
}
.tag-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-light);
}
.tag-btn.selected {
    background: linear-gradient(135deg, var(--primary), var(--primary-hover));
    color: #fff;
    border-color: transparent;
    box-shadow: 0 2px 12px var(--primary-glow);
    transform: scale(1.03);
}

/* ---------- Forms ---------- */
.form-group {
    margin-bottom: var(--space-md);
}
.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--text);
}
.form-input {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    font-size: 14px;
    transition: var(--transition);
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur-light);
    -webkit-backdrop-filter: var(--glass-blur-light);
    color: var(--text);
}
.form-input::placeholder {
    color: var(--text-muted);
}
.form-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-light), 0 2px 8px var(--primary-glow);
}
select.form-input {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%2394a3b8' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
    cursor: pointer;
}

/* ---------- Calorie Info ---------- */
.calorie-bar {
    background: var(--bg);
    border-radius: var(--radius);
    padding: var(--space-lg);
    margin: var(--space-md) 0;
    border: 1px solid var(--border-light);
}
.calorie-bar .row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-sm);
    padding: var(--space-xs) 0;
}
.calorie-bar .row:last-child { margin-bottom: 0; }
.calorie-bar .label { font-size: 14px; color: var(--text-secondary); }
.calorie-bar .value { font-size: 15px; font-weight: 600; color: var(--text); }
.calorie-bar .total {
    font-size: 24px;
    font-weight: 800;
    color: var(--primary);
}
.calorie-progress {
    height: 8px;
    background: var(--border);
    border-radius: var(--radius-full);
    margin-top: var(--space-sm);
    overflow: hidden;
}
.calorie-progress .fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), #4ade80);
    border-radius: var(--radius-full);
    transition: width 0.4s ease;
}

/* ---------- Calorie stat cards ---------- */
.calorie-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
    margin: var(--space-md) 0;
}
.calorie-stat {
    text-align: center;
    padding: var(--space-lg) var(--space-md);
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur-light);
    -webkit-backdrop-filter: var(--glass-blur-light);
    border-radius: var(--radius);
    border: 1px solid var(--glass-border);
}
.calorie-stat .stat-value {
    font-size: 28px;
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
}
.calorie-stat .stat-label {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 6px;
    font-weight: 500;
}
.calorie-stat .stat-unit {
    font-size: 14px;
    font-weight: 400;
    color: var(--text-secondary);
}

/* ---------- Meal Plan Result ---------- */
.day-tabs {
    display: flex;
    gap: 4px;
    overflow-x: auto;
    padding-bottom: var(--space-sm);
    margin-bottom: var(--space-lg);
    border-bottom: 1px solid var(--border);
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}
.day-tabs::-webkit-scrollbar { display: none; }
.day-tab {
    padding: 10px 22px;
    border: none;
    background: transparent;
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    white-space: nowrap;
    border-radius: var(--radius) var(--radius) 0 0;
    transition: var(--transition);
    color: var(--text-secondary);
}
.day-tab:hover { background: var(--bg-hover); color: var(--text); }
.day-tab.active {
    background: linear-gradient(135deg, var(--primary), var(--primary-hover));
    color: #fff;
    font-weight: 600;
    box-shadow: 0 2px 8px var(--primary-glow);
}

.meal-card {
    background: var(--glass-bg-solid);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-radius: var(--radius-lg);
    box-shadow: var(--glass-shadow);
    padding: var(--space-lg);
    margin-bottom: var(--space-md);
    border: 1px solid var(--glass-border);
    border-left: 3px solid var(--primary);
    transition: var(--transition-slow);
    position: relative;
    overflow: hidden;
}
.meal-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--glass-highlight), transparent);
    pointer-events: none;
}
.meal-card:hover {
    box-shadow: var(--glass-shadow-hover);
    transform: translateY(-1px);
}
.meal-card.lunch { border-left-color: var(--meal-lunch); }
.meal-card.dinner { border-left-color: var(--meal-dinner); }
.meal-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--space-md);
}
.meal-type {
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--text-muted);
    letter-spacing: 1px;
}
.meal-name {
    font-size: 18px;
    font-weight: 700;
    margin-top: 4px;
}
.calorie-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 14px;
    background: var(--accent-light);
    color: var(--accent);
    border-radius: var(--radius-full);
    font-size: 13px;
    font-weight: 700;
    flex-shrink: 0;
}
.meal-nutrition {
    display: flex;
    gap: var(--space-lg);
    margin: var(--space-md) 0;
    font-size: 13px;
    color: var(--text-secondary);
}
.meal-section {
    margin-top: var(--space-md);
}
.meal-section h4 {
    font-size: 13px;
    font-weight: 700;
    color: var(--text-muted);
    margin-bottom: var(--space-sm);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.ingredient-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}
.ingredient-item {
    padding: 5px 14px;
    background: var(--bg);
    border-radius: var(--radius-full);
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 500;
}
.step-list {
    counter-reset: step;
}
.step-item {
    display: flex;
    gap: var(--space-md);
    padding: var(--space-sm) 0;
    border-bottom: 1px solid var(--border-light);
    font-size: 14px;
    line-height: 1.7;
    color: var(--text-secondary);
}
.step-item:last-child { border-bottom: none; }
.step-num {
    counter-increment: step;
    width: 26px;
    height: 26px;
    background: var(--primary-light);
    color: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 700;
    flex-shrink: 0;
    margin-top: 2px;
}

/* ---------- Shopping List ---------- */
.shopping-list {
    background: var(--bg);
    border-radius: var(--radius);
    padding: var(--space-lg);
}
.shopping-item {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px dashed var(--border);
    font-size: 14px;
}
.shopping-item:last-child { border-bottom: none; }

/* ---------- Flash Messages ---------- */
.flash {
    padding: 12px var(--space-lg);
    border-radius: var(--radius);
    margin-bottom: var(--space-lg);
    font-size: 14px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
    animation: flashIn 0.3s ease;
}
@keyframes flashIn {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
}
.flash.success { background: #dcfce7; color: #166534; border: 1px solid #bbf7d0; }
.flash.error { background: #fef2f2; color: #991b1b; border: 1px solid #fecaca; }
.flash.info { background: #dbeafe; color: #1e40af; border: 1px solid #bfdbfe; }

[data-theme="dark"] .flash.success { background: #052e16; color: #86efac; border-color: #166534; }
[data-theme="dark"] .flash.error { background: #450a0a; color: #fca5a5; border-color: #991b1b; }
[data-theme="dark"] .flash.info { background: #172554; color: #93c5fd; border-color: #1e40af; }

/* ---------- Stats Cards (Admin) ---------- */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}
.stat-card {
    background: var(--glass-bg-solid);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-radius: var(--radius-lg);
    box-shadow: var(--glass-shadow);
    padding: var(--space-lg);
    text-align: center;
    border: 1px solid var(--glass-border);
    transition: var(--transition-bounce);
}
.stat-card:hover { box-shadow: var(--glass-shadow-hover); transform: translateY(-2px); }
.stat-card .num {
    font-size: 30px;
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
}
.stat-card .label {
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 8px;
    font-weight: 500;
}

/* ---------- Tables ---------- */
.table-wrap {
    overflow-x: auto;
    border-radius: var(--radius);
    border: 1px solid var(--border);
}
table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}
th, td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}
th {
    background: var(--bg);
    font-weight: 600;
    font-size: 12px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
tr:last-child td { border-bottom: none; }
tr:hover td { background: var(--bg-hover); }

/* ---------- Badges ---------- */
.badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: var(--radius-full);
    font-size: 12px;
    font-weight: 600;
}
.badge-free { background: var(--primary-light); color: var(--primary-dark); }
.badge-paid { background: var(--accent-light); color: var(--accent-dark); }
.badge-admin { background: #fef2f2; color: #dc2626; }
.badge-pending { background: var(--bg-hover); color: var(--text-secondary); }
.badge-success { background: var(--primary-light); color: var(--primary-dark); }

[data-theme="dark"] .badge-admin { background: #450a0a; color: #fca5a5; }

/* ---------- Premium Badge ---------- */
.premium-badge {
    background: var(--accent);
    color: #fff;
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.5px;
}

/* ---------- Auth Pages ---------- */
.auth-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: calc(100vh - 64px);
    padding: var(--space-lg);
}
.auth-card {
    width: 100%;
    max-width: 420px;
    padding: var(--space-xl);
    background: var(--glass-bg-solid);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-radius: var(--radius-xl);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
}
.auth-card h2 {
    text-align: center;
    margin-bottom: var(--space-lg);
    font-size: 24px;
    font-weight: 800;
    color: var(--text);
}
.auth-footer {
    text-align: center;
    margin-top: var(--space-lg);
    font-size: 13px;
    color: var(--text-muted);
}
.auth-footer a { color: var(--primary); font-weight: 600; }

/* ---------- Admin Sidebar ---------- */
.admin-layout {
    display: flex;
    min-height: calc(100vh - 64px);
}
.admin-sidebar {
    width: 230px;
    background: var(--glass-bg-solid);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-right: 1px solid var(--glass-border);
    padding: var(--space-lg) 0;
    flex-shrink: 0;
}
.admin-sidebar a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 11px var(--space-lg);
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
    margin: 2px var(--space-sm);
    border-radius: var(--radius);
}
.admin-sidebar a:hover {
    background: var(--bg-hover);
    color: var(--text);
}
.admin-sidebar a.active {
    background: var(--primary-light);
    color: var(--primary);
    font-weight: 600;
}
.admin-content {
    flex: 1;
    padding: var(--space-xl);
    overflow-y: auto;
}

/* ---------- Admin Glass Components ---------- */
.admin-page-title {
    font-size: 22px;
    font-weight: 800;
    margin-bottom: var(--space-lg);
    display: flex;
    align-items: center;
    gap: 10px;
}
.admin-stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}
.admin-stat-card {
    background: var(--glass-bg-solid);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-radius: var(--radius-lg);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    padding: 20px;
    position: relative;
    overflow: hidden;
    transition: var(--transition-bounce);
}
.admin-stat-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--glass-highlight), transparent);
    pointer-events: none;
}
.admin-stat-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--glass-shadow-hover);
}
.admin-stat-card .stat-icon {
    font-size: 24px;
    margin-bottom: 8px;
    display: block;
}
.admin-stat-card .stat-num {
    font-size: 28px;
    font-weight: 800;
    line-height: 1;
    margin-bottom: 4px;
}
.admin-stat-card .stat-label {
    font-size: 13px;
    color: var(--text-muted);
    font-weight: 500;
}
.admin-stat-card.accent .stat-num { color: var(--accent); }
.admin-stat-card.primary .stat-num { color: var(--primary); }
.admin-stat-card.indigo .stat-num { color: #818cf8; }

.admin-table-wrap {
    background: var(--glass-bg-solid);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-radius: var(--radius-lg);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    overflow: hidden;
    margin-bottom: var(--space-md);
    position: relative;
}
.admin-table-wrap::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--glass-highlight), transparent);
    pointer-events: none;
    z-index: 1;
}
.admin-table-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-light);
    font-size: 15px;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 8px;
}
.admin-table-wrap table {
    width: 100%;
    border-collapse: collapse;
}
.admin-table-wrap th {
    padding: 10px 16px;
    text-align: left;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    background: var(--bg);
    border-bottom: 1px solid var(--border-light);
}
.admin-table-wrap td {
    padding: 12px 16px;
    font-size: 14px;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-light);
}
.admin-table-wrap tr:last-child td { border-bottom: none; }
.admin-table-wrap tr:hover td { background: var(--bg-hover); }

.admin-form-section {
    background: var(--glass-bg-solid);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-radius: var(--radius-lg);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    overflow: hidden;
    margin-bottom: var(--space-md);
    position: relative;
}
.admin-form-section::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--glass-highlight), transparent);
    pointer-events: none;
}
.admin-form-section .section-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-light);
    font-size: 15px;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 8px;
}
.admin-form-section .section-body { padding: 20px; }

.admin-flash {
    padding: 10px 16px;
    border-radius: var(--radius);
    font-size: 13px;
    margin-bottom: var(--space-md);
    animation: fadeIn 0.3s ease;
}
.admin-flash.error {
    background: rgba(239,68,68,0.1);
    border: 1px solid rgba(239,68,68,0.3);
    color: #ef4444;
}
.admin-flash.success {
    background: rgba(52,211,153,0.1);
    border: 1px solid rgba(52,211,153,0.3);
    color: var(--primary);
}

@media (max-width: 768px) {
    .admin-stats-grid { grid-template-columns: repeat(2, 1fr); }
    .admin-layout { flex-direction: column; }
    .admin-sidebar {
        width: 100%;
        flex-direction: row;
        overflow-x: auto;
        display: flex;
        gap: 0;
        padding: var(--space-sm);
        border-right: none;
        border-bottom: 1px solid var(--glass-border);
    }
    .admin-sidebar::-webkit-scrollbar { display: none; }
    .admin-sidebar a { padding: 10px var(--space-md); white-space: nowrap; margin: 0; }
    .admin-content { padding: var(--space-md); }
}
@media (max-width: 480px) {
    .admin-stats-grid { grid-template-columns: 1fr; }
}

/* ---------- Recipe Grid (recipes.php) ---------- */
.recipe-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--space-md);
}
.recipe-card {
    background: var(--glass-bg-solid);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-radius: var(--radius-lg);
    overflow: hidden;
    cursor: pointer;
    border: 1px solid var(--glass-border);
    transition: var(--transition-bounce);
    position: relative;
    box-shadow: var(--glass-shadow);
}
.recipe-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--glass-highlight), transparent);
    pointer-events: none;
    z-index: 2;
}
.recipe-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--glass-shadow-hover);
}
.recipe-card-header {
    padding: 24px 20px;
    text-align: center;
    background: var(--glass-emerald);
}
.recipe-card-header.breakfast {
    background: var(--glass-amber);
}
.recipe-card-header.lunch {
    background: var(--glass-emerald);
}
.recipe-card-header.dinner {
    background: var(--glass-indigo);
}
.recipe-card-header .type-label {
    font-size: 11px;
    color: var(--text-muted);
    margin-bottom: 4px;
    font-weight: 500;
}
.recipe-card-header .name {
    font-size: 17px;
    font-weight: 700;
    color: var(--text);
}
.recipe-card-body {
    padding: var(--space-md);
}
.recipe-card-body .cal {
    font-size: 22px;
    font-weight: 800;
    color: var(--accent);
}
.recipe-card-body .cal small {
    font-size: 12px;
    font-weight: 400;
    color: var(--text-muted);
}
.recipe-card-body .nutrients {
    display: flex;
    gap: var(--space-md);
    margin-top: var(--space-sm);
    font-size: 12px;
    color: var(--text-muted);
}
.recipe-card-body .tags {
    display: flex;
    gap: 4px;
    flex-wrap: wrap;
    margin-top: var(--space-sm);
}
.recipe-card-body .tag {
    background: var(--bg);
    padding: 3px 10px;
    border-radius: var(--radius-full);
    font-size: 11px;
    color: var(--text-secondary);
    font-weight: 500;
}

/* ---------- Filter Section ---------- */
.filter-section {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    align-items: center;
}
.filter-section input,
.filter-section select {
    padding: 8px 14px;
    border: 1.5px solid var(--border);
    border-radius: var(--radius);
    font-size: 13px;
    background: var(--card);
    color: var(--text);
    transition: var(--transition);
}
.filter-section input:focus,
.filter-section select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.1);
}
.filter-section input[type="text"] { width: 180px; }
.filter-section input[type="number"] { width: 100px; }

/* ---------- Type Tabs ---------- */
.type-tabs {
    display: flex;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
}
.type-tab {
    padding: 8px 22px;
    border-radius: var(--radius-full);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur-light);
    -webkit-backdrop-filter: var(--glass-blur-light);
    border: 1px solid var(--glass-border);
    transition: var(--transition);
    color: var(--text-secondary);
    user-select: none;
}
.type-tab:hover { border-color: var(--primary); color: var(--primary); }
.type-tab.active {
    background: linear-gradient(135deg, var(--primary), var(--primary-hover));
    color: #fff;
    border-color: transparent;
    box-shadow: 0 2px 8px var(--primary-glow);
}

/* ---------- Recipe Detail ---------- */
.recipe-hero {
    padding: 36px var(--space-lg);
    text-align: center;
    border-radius: var(--radius-xl);
    margin-bottom: var(--space-lg);
    background: var(--glass-emerald);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
}
.recipe-hero.breakfast { background: var(--glass-amber); }
.recipe-hero.lunch { background: var(--glass-emerald); }
.recipe-hero.dinner { background: var(--glass-indigo); }
.recipe-hero .name { font-size: 26px; font-weight: 800; margin: 10px 0 6px; color: var(--text); }
.recipe-hero .meta { font-size: 13px; color: var(--text-secondary); }
.cal-big { font-size: 44px; font-weight: 800; color: var(--accent); }
.cal-big small { font-size: 16px; font-weight: 400; color: var(--text-muted); }
.nutrition-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
    margin-top: var(--space-lg);
}
.nut-card {
    background: var(--bg);
    padding: var(--space-md);
    border-radius: var(--radius);
    text-align: center;
    border: 1px solid var(--border-light);
}
.nut-card .val { font-size: 24px; font-weight: 800; }
.nut-card .label { font-size: 12px; color: var(--text-muted); margin-top: 2px; font-weight: 500; }
.nut-card.protein .val { color: var(--protein-color); }
.nut-card.fat .val { color: var(--fat-color); }
.nut-card.carbs .val { color: var(--carbs-color); }
.detail-section { margin-top: var(--space-xl); }
.detail-section h3 { margin-bottom: var(--space-md); font-size: 18px; font-weight: 700; }
.ingredient-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-sm);
}
.ingredient-item {
    display: flex;
    justify-content: space-between;
    padding: 10px 14px;
    background: var(--bg);
    border-radius: var(--radius-sm);
    font-size: 14px;
}
.ingredient-item .name { font-weight: 600; color: var(--text); }
.ingredient-item .amount { color: var(--text-muted); }

/* ---------- Hero Section ---------- */
.hero-section {
    text-align: center;
    padding: var(--space-2xl) var(--space-lg);
    background: var(--glass-emerald);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-radius: var(--radius-xl);
    margin-bottom: var(--space-lg);
    position: relative;
    overflow: hidden;
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
}
.hero-section::before {
    content: '';
    position: absolute;
    top: -30%;
    right: -15%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(52, 211, 153, 0.2), transparent 70%);
    border-radius: 50%;
    animation: floatBlob 8s ease-in-out infinite;
}
.hero-section::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 250px;
    height: 250px;
    background: radial-gradient(circle, rgba(56, 189, 248, 0.12), transparent 70%);
    border-radius: 50%;
    animation: floatBlob 10s ease-in-out infinite reverse;
}
@keyframes floatBlob {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(20px, -15px) scale(1.05); }
    66% { transform: translate(-10px, 10px) scale(0.95); }
}
.hero-section h1 {
    font-size: 34px;
    font-weight: 800;
    margin-bottom: 10px;
    position: relative;
    z-index: 1;
    background: linear-gradient(135deg, var(--primary-dark), var(--primary), var(--primary-hover));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero-section .subtitle {
    font-size: 16px;
    color: var(--text-secondary);
    max-width: 480px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

[data-theme="dark"] .hero-section {
    background: var(--glass-emerald);
}
[data-theme="dark"] .hero-section h1 {
    background: linear-gradient(135deg, var(--primary), var(--primary-hover), #34d399);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ---------- Notice Bar ---------- */
.notice-bar {
    padding: 12px var(--space-lg);
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur-light);
    -webkit-backdrop-filter: var(--glass-blur-light);
    border: 1px solid var(--glass-border);
    border-left: 3px solid var(--accent);
    border-radius: var(--radius);
    margin-bottom: var(--space-md);
    font-size: 13px;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 8px;
}

[data-theme="dark"] .notice-bar {
    background: var(--glass-bg);
    color: var(--text-secondary);
}

/* ---------- Quota Info ---------- */
.quota-info {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
    padding: var(--space-md);
    background: var(--bg);
    border-radius: var(--radius);
    border: 1px solid var(--border-light);
    display: flex;
    align-items: center;
    gap: 8px;
}
.quota-info strong {
    color: var(--text);
}

/* ---------- Feature Cards (首页底部) ---------- */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
    margin-top: var(--space-xl);
}
.feature-card {
    text-align: center;
    padding: var(--space-xl) var(--space-md);
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-radius: var(--radius-lg);
    border: 1px solid var(--glass-border);
    transition: var(--transition-bounce);
    position: relative;
    overflow: hidden;
    box-shadow: var(--glass-shadow);
}
.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--glass-highlight), transparent);
    pointer-events: none;
}
.feature-card:hover {
    box-shadow: var(--glass-shadow-hover);
    transform: translateY(-4px);
}
.feature-card .feature-icon {
    font-size: 32px;
    margin-bottom: var(--space-md);
    display: block;
}
.feature-card .feature-title {
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 6px;
    color: var(--text);
}
.feature-card .feature-desc {
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.6;
}

/* 4列特性网格 */
.features-grid-4 {
    grid-template-columns: repeat(4, 1fr);
}
@media (max-width: 768px) {
    .features-grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
    .features-grid-4 { grid-template-columns: 1fr; }
}

/* AI 特性卡片 */
.feature-card-ai {
    border-color: var(--accent);
    background: linear-gradient(135deg, var(--glass-bg), rgba(251, 146, 60, 0.08));
}
.feature-card-ai:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 32px rgba(251, 146, 60, 0.15), var(--glass-shadow);
}
.feature-badge {
    display: inline-block;
    margin-top: 10px;
    padding: 3px 12px;
    background: linear-gradient(135deg, var(--accent), #f97316);
    color: #fff;
    font-size: 11px;
    font-weight: 700;
    border-radius: var(--radius-full);
    letter-spacing: 0.5px;
}

/* AI 增强模式开关 */
.ai-mode-toggle,
.ai-mode-locked {
    margin-top: 4px;
}
.ai-toggle-card {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 16px;
    background: var(--bg);
    border-radius: var(--radius);
    border: 1px solid var(--border-light);
}
.ai-toggle-title {
    font-size: 14px;
    font-weight: 700;
    color: var(--text);
}
.ai-toggle-desc {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 2px;
    line-height: 1.5;
}
.ai-locked-icon {
    font-size: 22px;
    flex-shrink: 0;
}

/* Toggle Switch */
.ai-switch {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 24px;
    flex-shrink: 0;
}
.ai-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}
.ai-switch-slider {
    position: absolute;
    cursor: pointer;
    top: 0; left: 0; right: 0; bottom: 0;
    background: var(--border);
    border-radius: 24px;
    transition: 0.3s;
}
.ai-switch-slider::before {
    content: '';
    position: absolute;
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background: #fff;
    border-radius: 50%;
    transition: 0.3s;
}
.ai-switch input:checked + .ai-switch-slider {
    background: var(--accent);
}
.ai-switch input:checked + .ai-switch-slider::before {
    transform: translateX(20px);
}

/* 响应式：AI卡片 */
@media (max-width: 768px) {
    .ai-toggle-card {
        flex-wrap: wrap;
    }
}

/* ---------- Steps Section ---------- */
.steps-section {
    margin-bottom: 20px;
}
.steps-card {
    background: var(--glass-bg-solid);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-radius: var(--radius-xl);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    padding: 20px 24px;
    position: relative;
    overflow: hidden;
}
.steps-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--glass-highlight), transparent);
    pointer-events: none;
}
.steps-title {
    font-size: 13px;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 14px;
    text-align: center;
}
.steps-list {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}
.step-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    background: var(--bg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
    font-size: 13px;
    color: var(--text-secondary);
    white-space: nowrap;
}
.step-item .step-icon {
    font-size: 20px;
}
.step-item strong {
    color: var(--text);
}
.step-arrow {
    color: var(--text-muted);
    font-size: 16px;
    opacity: 0.5;
}

@media (max-width: 768px) {
    .steps-list {
        flex-direction: column;
        gap: 8px;
    }
    .step-arrow {
        transform: rotate(90deg);
        font-size: 14px;
    }
    .step-item {
        width: 100%;
        justify-content: center;
    }
}

/* ---------- Result Summary ---------- */
.result-summary {
    text-align: center;
    padding: var(--space-xl);
}
.result-summary .summary-label {
    font-size: 14px;
    color: var(--text-secondary);
}
.result-summary .summary-value {
    font-size: 36px;
    font-weight: 800;
    color: var(--primary);
    margin: var(--space-sm) 0;
    line-height: 1;
}
.result-summary .summary-value small {
    font-size: 16px;
    font-weight: 400;
    color: var(--text-muted);
}
.result-actions {
    margin-top: var(--space-lg);
    display: flex;
    gap: var(--space-sm);
    justify-content: center;
    flex-wrap: wrap;
}

/* ---------- Day Total ---------- */
.day-total {
    text-align: center;
    padding: 12px var(--space-lg);
    background: var(--bg);
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    border: 1px solid var(--border-light);
}
.day-total strong {
    color: var(--accent);
}

/* ---------- Checkout Plans ---------- */
.plan-card {
    text-align: center;
    cursor: pointer;
    border: 1px solid var(--glass-border);
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    transition: var(--transition-bounce);
    position: relative;
    overflow: hidden;
}
.plan-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--glass-highlight), transparent);
    pointer-events: none;
}
.plan-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--glass-shadow-hover);
}
.plan-card.selected-monthly {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-light), 0 8px 24px var(--primary-glow);
}
.plan-card.selected-yearly {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-light), 0 8px 24px var(--accent-glow);
}
.plan-card .plan-label {
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 500;
}
.plan-card .plan-price {
    font-size: 32px;
    font-weight: 800;
    margin: 10px 0;
}
.plan-card .plan-desc {
    font-size: 13px;
    color: var(--text-muted);
}
.plan-card .plan-badge {
    position: absolute;
    top: -1px;
    right: -1px;
    background: var(--accent);
    color: #fff;
    padding: 3px 14px;
    border-radius: 0 var(--radius) 0 var(--radius-lg);
    font-size: 11px;
    font-weight: 700;
}

/* ---------- QR Payment ---------- */
.qr-container {
    text-align: center;
    padding: var(--space-lg);
    max-width: 440px;
    margin: var(--space-xl) auto;
}
.qr-box {
    width: 240px;
    height: 240px;
    margin: var(--space-lg) auto;
    border: 2px solid var(--border);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--card);
    position: relative;
}
.qr-box img { max-width: 210px; max-height: 210px; border-radius: var(--radius-sm); }
.qr-link {
    font-size: 11px;
    color: var(--text-muted);
    word-break: break-all;
    max-width: 320px;
    margin: 12px auto 0;
    padding: var(--space-sm) var(--space-md);
    background: var(--bg);
    border-radius: var(--radius-sm);
}
.qr-status { margin-top: var(--space-lg); font-size: 14px; color: var(--text-secondary); }
.qr-status.checking { color: var(--primary); }
.qr-status.success { color: var(--success); font-weight: 600; }
.btn-back { margin-top: var(--space-lg); }
.timer { font-size: 13px; color: var(--text-muted); margin-top: var(--space-sm); }

/* ---------- Print Styles ---------- */
@media print {
    .navbar, .no-print { display: none !important; }
    body { background: #fff; color: #333; }
    .card { box-shadow: none; border: 1px solid #ddd; }
    .container { padding: 0; max-width: 100%; }
    [data-theme="dark"] { color: #333; }
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
    .navbar .container { padding: 0 var(--space-md); height: 56px; }
    .navbar nav { gap: 0; }
    .navbar nav a { padding: 6px 10px; font-size: 13px; }
    .container { padding: var(--space-md); }

    .hero-section { padding: var(--space-xl) var(--space-md); }
    .hero-section h1 { font-size: 24px; }
    .hero-section .subtitle { font-size: 14px; }

    .day-selector { grid-template-columns: repeat(2, 1fr); gap: var(--space-sm); }
    .day-btn { padding: 18px 12px 14px; }
    .day-btn .num { font-size: 26px; }

    .goal-selector { grid-template-columns: repeat(2, 1fr); gap: var(--space-sm); }

    .calorie-stats { grid-template-columns: repeat(3, 1fr); gap: var(--space-sm); }
    .calorie-stat { padding: var(--space-md) var(--space-sm); }
    .calorie-stat .stat-value { font-size: 22px; }

    .features-grid { grid-template-columns: 1fr; gap: var(--space-md); }

    .recipe-grid { grid-template-columns: repeat(2, 1fr); gap: var(--space-sm); }
    .recipe-card-header { padding: 18px 14px; }

    .admin-layout { flex-direction: column; }
    .admin-sidebar {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid var(--border);
        display: flex;
        overflow-x: auto;
        padding: var(--space-sm);
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
    }
    .admin-sidebar::-webkit-scrollbar { display: none; }
    .admin-sidebar a { padding: 10px var(--space-md); white-space: nowrap; margin: 0; }
    .admin-content { padding: var(--space-md); }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }

    .ingredient-grid { grid-template-columns: 1fr; }
    .nutrition-grid { grid-template-columns: repeat(3, 1fr); gap: var(--space-sm); }

    .result-summary .summary-value { font-size: 28px; }

    .filter-section input[type="text"] { width: 100%; }
}

@media (max-width: 480px) {
    .recipe-grid { grid-template-columns: 1fr; }
    .day-selector { grid-template-columns: 1fr 1fr; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .calorie-stats { grid-template-columns: 1fr; }
}

/* ---------- Utility ---------- */
.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }
.text-secondary { color: var(--text-secondary); }
.text-primary { color: var(--primary); }
.text-accent { color: var(--accent); }
.text-danger { color: var(--danger); }
.text-bold { font-weight: 700; }

.mt-1 { margin-top: var(--space-sm); }
.mt-2 { margin-top: var(--space-md); }
.mt-3 { margin-top: var(--space-lg); }
.mt-4 { margin-top: var(--space-xl); }
.mb-1 { margin-bottom: var(--space-sm); }
.mb-2 { margin-bottom: var(--space-md); }
.mb-3 { margin-bottom: var(--space-lg); }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: var(--space-sm); }
.gap-2 { gap: var(--space-md); }
.gap-3 { gap: var(--space-lg); }
.flex-between { display: flex; justify-content: space-between; align-items: center; }

.w-full { width: 100%; }
.hidden { display: none; }

/* ---------- Animations ---------- */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}
@keyframes slideUp {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}
.animate-fadeIn { animation: fadeIn 0.4s ease; }
.animate-slideUp { animation: slideUp 0.4s ease; }

/* Button Spinner */
.btn-spinner {
    display: inline-block;
    width: 18px;
    height: 18px;
    border: 2.5px solid rgba(255,255,255,0.3);
    border-top-color: #fff;
    border-radius: 50%;
    vertical-align: middle;
    margin-right: 8px;
    animation: btnSpin 0.6s linear infinite;
}
@keyframes btnSpin {
    to { transform: rotate(360deg); }
}