/* ==========================================================================
   NUTRITION HUB - Professional Design System
   ========================================================================== */

/* ==========================================================================
   1. Design Tokens & Variables
   ========================================================================== */
:root {
    /* Colors */
    --color-primary: #338BFF;
    --color-primary-light: #51BCFE;
    --color-primary-dark: #2671DB;

    --color-text-primary: #2c3e50;
    --color-text-secondary: #5a6c7d;
    --color-text-light: #7f8c8d;
    --color-text-inverse: #ffffff;

    --color-bg-primary: #ffffff;
    --color-bg-secondary: #f8f9fa;
    --color-bg-tertiary: #f5f5f5;

    --color-border: #e1e4e8;
    --color-border-light: #f0f0f0;

    --color-success: #27ae60;
    --color-warning: #f39c12;
    --color-danger: #e74c3c;
    --color-info: #3498db;

    /* Typography Scale - Using Perfect Fourth (1.333) */
    --font-size-xs: 0.75rem;     /* 12px */
    --font-size-sm: 0.875rem;    /* 14px */
    --font-size-base: 1rem;      /* 16px */
    --font-size-lg: 1.125rem;    /* 18px */
    --font-size-xl: 1.5rem;      /* 24px */
    --font-size-2xl: 2rem;       /* 32px */
    --font-size-3xl: 2.5rem;     /* 40px */
    --font-size-4xl: 3rem;       /* 48px */

    /* Font Weights */
    --font-weight-light: 300;
    --font-weight-regular: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    /* Line Heights */
    --line-height-tight: 1.25;
    --line-height-base: 1.6;
    --line-height-relaxed: 1.8;

    /* Spacing Scale - Using Base 8 */
    --space-xs: 0.25rem;   /* 4px */
    --space-sm: 0.5rem;    /* 8px */
    --space-md: 1rem;      /* 16px */
    --space-lg: 1.5rem;    /* 24px */
    --space-xl: 2rem;      /* 32px */
    --space-2xl: 3rem;     /* 48px */
    --space-3xl: 4rem;     /* 64px */
    --space-4xl: 6rem;     /* 96px */

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

    /* Shadows */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 16px 32px rgba(0, 0, 0, 0.15);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;

    /* Container */
    --container-max-width: 1200px;
    --container-padding: var(--space-lg);
}

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

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: 'Noto Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-regular);
    line-height: var(--line-height-base);
    color: var(--color-text-primary);
    background-color: var(--color-bg-tertiary);
}

/* ==========================================================================
   3. Typography
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-tight);
    color: var(--color-text-primary);
    margin-top: 0;
    margin-bottom: var(--space-md);
}

h1 {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--space-lg);
}

h2 {
    font-size: var(--font-size-xl);
    margin-top: var(--space-2xl);
    margin-bottom: var(--space-lg);
}

h3 {
    font-size: var(--font-size-l);
    margin-top: var(--space-xl);
    margin-bottom: var(--space-md);
    font-weight: bold;
}

h4 {
    font-size: var(--font-size-lg);
    margin-top: var(--space-lg);
    margin-bottom: var(--space-md);
}

p {
    margin-bottom: var(--space-md);
    line-height: var(--line-height-relaxed);
}

p:last-child {
    margin-bottom: 0;
}

a {
    color: var(--color-info);
    text-decoration: none;
    transition: color var(--transition-base);
}

a:hover {
    color: var(--color-primary-dark);
    text-decoration: underline;
}

/* ==========================================================================
   4. Layout Components
   ========================================================================== */

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

/* Main Content Area */
.main {
    min-height: calc(100vh - 200px);
    padding: var(--space-xl) 0;
}

/* Content Box */
.content {
    background: var(--color-bg-primary);
    border-radius: var(--radius-md);
    padding: var(--space-2xl);
    margin: var(--space-md) 0;
    box-shadow: var(--shadow-sm);
}

.content p.subtitle {
    display: none;
}

/* Section */
.section {
    margin: var(--space-3xl) 0;
}

.section:first-child {
    margin-top: 0;
}

.section:last-child {
    margin-bottom: 0;
}

.section h2 {
    border-bottom: 2px solid var(--color-primary);
    padding-bottom: var(--space-md);
    margin-bottom: var(--space-xl);
}

/* ==========================================================================
   5. Header & Navigation
   ========================================================================== */
.header {
    background: var(--color-bg-primary);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-md) 0;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    text-decoration: none;
}

.logo-img {
    height: 32px;
    width: auto;
}

.logo-text {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
}

/* Desktop Navigation */
.nav-desktop {
    display: flex;
    gap: var(--space-sm);
    align-items: center;
}

.nav-desktop a {
    padding: var(--space-sm) var(--space-md);
    color: var(--color-text-secondary);
    font-weight: var(--font-weight-medium);
    border-radius: var(--radius-sm);
    transition: all var(--transition-base);
    font-size: 0.85rem;
}

.nav-desktop a:hover {
    color: var(--color-text-primary);
    background: var(--color-bg-secondary);
    text-decoration: none;
}

/* Dropdown Menu */
.dropdown {
    position: relative;
}

.dropdown-toggle {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition-base);
    font-size: 0.85rem;
}

.dropdown-toggle:hover {
    background: var(--color-bg-secondary);
    border-color: var(--color-text-secondary);
}

.dropdown-arrow {
    font-size: var(--font-size-xs);
    transition: transform var(--transition-base);
}

.dropdown.active .dropdown-arrow {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: calc(100% + var(--space-sm));
    right: 0;
    min-width: 240px;
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all var(--transition-base);
}

.dropdown.active .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu a {
    display: block;
    padding: var(--space-sm) var(--space-md);
    color: var(--color-text-secondary);
    transition: all var(--transition-base);
}

.dropdown-menu a:not(:last-child) {
    border-bottom: 1px solid var(--color-border-light);
}

.dropdown-menu a:hover {
    background: var(--color-bg-secondary);
    color: var(--color-text-primary);
    padding-left: var(--space-lg);
}

/* Mobile Navigation and Hamburger */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 4px;
    padding: var(--space-sm);
    background: transparent;
    border: 1px solid transparent;
    cursor: pointer;
    z-index: 1001;
    position: relative;
    min-width: 44px;
    min-height: 44px;
}

.hamburger span {
    display: block;
    width: 25px;
    height: 3px;
    background: var(--color-text-primary);
    border-radius: 2px;
    transition: all 0.3s;
}

.hamburger:hover {
    background: var(--color-bg-secondary);
    border-radius: var(--radius-sm);
}

.hamburger:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

.nav-mobile {
    display: none;
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background: var(--color-bg-primary);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
    max-height: calc(100vh - 60px);
    overflow-y: auto;
    z-index: 999;
}

.nav-mobile.active {
    display: block;
}

.nav-mobile a {
    display: block;
    padding: var(--space-md);
    color: var(--color-text-secondary);
    border-bottom: 1px solid var(--color-border-light);
    transition: all var(--transition-base);
}

.nav-mobile a:hover {
    background: var(--color-bg-secondary);
    color: var(--color-text-primary);
    text-decoration: none;
}

/* Mobile Navigation Toggle */
.nav-mobile-toggle {
    display: none;
    padding: var(--space-sm);
    background: none;
    border: none;
    font-size: var(--font-size-xl);
    color: var(--color-text-primary);
    cursor: pointer;
}

/* ==========================================================================
   6. Hero Section
   ========================================================================== */
.hero {
    background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-primary) 100%);
    color: var(--color-text-inverse);
    padding: var(--space-3xl) 0;
    text-align: center;
}

.hero h1 {
    font-size: var(--font-size-2xl);
    color: var(--color-text-inverse);
    margin-bottom: var(--space-md);
}

.hero p {
    font-size: var(--font-size-lg);
    opacity: 0.95;
    margin-bottom: var(--space-xl);
}

/* Hero Stats */
.stats {
    display: flex;
    gap: var(--space-2xl);
    justify-content: center;
    margin-top: var(--space-2xl);
}

.stat {
    text-align: center;
}

.stat-number {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-inverse);
    margin-bottom: var(--space-xs);
}

.stat-label {
    font-size: var(--font-size-base);
    opacity: 0.9;
    color: var(--color-text-inverse);
}

/* Search Box */
.search-box {
    display: flex;
    gap: var(--space-md);
    max-width: 600px;
    margin: var(--space-xl) auto 0;
}

.search-input {
    flex: 1;
    padding: var(--space-md) var(--space-lg);
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    font-family: inherit;
}

.search-button {
    padding: var(--space-md) var(--space-xl);
    background: var(--color-primary-dark);
    color: var(--color-text-inverse);
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
    transition: background var(--transition-base);
}

.search-button:hover {
    background: var(--color-text-primary);
}

/* ==========================================================================
   7. Cards & Grids
   ========================================================================== */

/* Category Grid */
.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: var(--space-lg);
    margin: var(--space-xl) 0;
}

.category-card {
    background: var(--color-bg-primary);
    border-radius: var(--radius-md);
    padding: var(--space-xl);
    text-align: center;
    text-decoration: none;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.category-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    text-decoration: none;
}

.category-icon {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--space-md);
}

.category-card h3 {
    color: var(--color-text-primary);
    margin-bottom: var(--space-sm);
}

.category-card p {
    color: var(--color-text-light);
    font-size: var(--font-size-sm);
    margin: 0;
}

.category-name {
    color: var(--color-text-primary);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-sm);
    text-decoration: none;
}

.category-count {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    text-decoration: none;
}

/* Items Grid */
.items-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--space-lg);
    margin: var(--space-l) 0;
}

.item-card {
    background: var(--color-bg-primary);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    text-decoration: none;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
    position: relative;
}

.item-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    text-decoration: none;
}

.item-card h3 {
    color: var(--color-text-primary);
    margin-bottom: var(--space-sm);
    margin-top: 0;
}

.item-card p {
    font-size: 0.85rem;
    line-height: 1.2;
    display: none;
}

.item-category {
    color: var(--color-text-light);
    font-size: var(--font-size-sm);
    margin-bottom: var(--space-sm);
}

.item-type {
    display: inline-block;
    padding: var(--space-xs) var(--space-sm);
    background: var(--color-bg-secondary);
    color: var(--color-text-secondary);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
}

.item-code {
    color: var(--color-text-light);
    font-size: var(--font-size-sm);
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-lg);
    margin: var(--space-xl) 0;
}

.stat-card {
    background: var(--color-bg-primary);
    padding: var(--space-lg);
    border-radius: var(--radius-md);
    text-align: center;
    box-shadow: var(--shadow-sm);
}

.stat-card h3 {
    font-size: var(--font-size-2xl);
    color: var(--color-primary);
    margin-bottom: var(--space-sm);
}

.stat-card p {
    color: var(--color-text-secondary);
    margin: 0;
}

/* ==========================================================================
   8. Nutrition Components
   ========================================================================== */

/* Macros Grid */
.macros, .nutrition-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: var(--space-md);
    margin: var(--space-xl) 0;
}

.macro-card, .nutrition-card {
    background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-primary) 100%);
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    text-align: center;
    color: var(--color-text-inverse);
    transition: all var(--transition-base);
}

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

.macro-value {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--space-xs);
}

.macro-unit {
    font-size: var(--font-size-sm);
    opacity: 0.9;
}

.macro-label {
    font-size: var(--font-size-sm);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    opacity: 0.95;
    margin-top: var(--space-xs);
}

/* Nutrition Table */
.nutrition-table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--space-xl) 0;
    overflow: hidden;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.nutrition-table thead {
    background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-primary) 100%);
    color: var(--color-text-inverse);
}

.nutrition-table th,
.nutrition-table td {
    padding: var(--space-md);
    text-align: left;
}

.nutrition-table th {
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    font-size: var(--font-size-sm);
    letter-spacing: 0.5px;
}

.nutrition-table tbody tr {
    background: var(--color-bg-primary);
    transition: background var(--transition-base);
}

.nutrition-table tbody tr:nth-child(even) {
    background: var(--color-bg-secondary);
}

.nutrition-table tbody tr:hover {
    background: #e3f2fd;
}

.nutrition-table td:last-child {
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
}

/* Nutrition Card Alternative */
.nutrition-card {
    background: var(--color-bg-primary);
    padding: var(--space-lg);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.nutrition-card h3 {
    color: var(--color-primary);
    margin-bottom: var(--space-md);
}

.nutrition-card table {
    width: 100%;
}

.nutrition-card td {
    padding: var(--space-sm) 0;
    border-bottom: 1px solid var(--color-border-light);
}

.nutrition-card td:last-child {
    text-align: right;
    font-weight: var(--font-weight-medium);
}

/* ==========================================================================
   9. Detail Page Components
   ========================================================================== */

/* Breadcrumb */
.breadcrumb {
    margin-top: var(--space-md);
    padding: var(--space-md) 0;
    color: var(--color-text-light);
    font-size: var(--font-size-sm);
}

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

.breadcrumb a:hover {
    text-decoration: underline;
}

/* Detail Header */
.detail-header {
    margin-bottom: var(--space-xl);
}

.detail-header h1 {
    margin-bottom: var(--space-md);
}

.detail-meta {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.badge {
    display: inline-block;
    padding: var(--space-xs) var(--space-md);
    background: var(--color-bg-secondary);
    color: var(--color-text-secondary);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
}

/* Detail Content */
.detail-content {
    margin: var(--space-xl) 0;
}

.description-section,
.nutrition-section,
.usage-section,
.health-section {
    margin: var(--space-2xl) 0;
}

.serving-info {
    color: var(--color-text-light);
    font-size: var(--font-size-sm);
    margin-bottom: var(--space-md);
}

.dish-list {
    margin-left: var(--space-lg);
    list-style-type: disc;
}

.dish-list li {
    margin-bottom: var(--space-sm);
    line-height: var(--line-height-relaxed);
}

/* ==========================================================================
   10. Footer
   ========================================================================== */
.footer {
    background: var(--color-text-primary);
    color: var(--color-text-inverse);
    padding: var(--space-2xl) 0;
    margin-top: var(--space-3xl);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-xl);
    margin-bottom: var(--space-xl);
}

.footer-section h4 {
    color: var(--color-text-inverse);
    margin-bottom: var(--space-md);
}

.footer-section p {
    opacity: 0.9;
    line-height: var(--line-height-relaxed);
}

.footer-section ul {
    list-style: none;
}

.footer-section li {
    margin-bottom: var(--space-sm);
}

.footer-section a {
    color: var(--color-text-inverse);
    opacity: 0.9;
    transition: opacity var(--transition-base);
}

.footer-section a:hover {
    opacity: 1;
    text-decoration: underline;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--space-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0.9;
}

/* ==========================================================================
   11. Utility Classes
   ========================================================================== */

/* Text Utilities */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-primary { color: var(--color-primary); }
.text-secondary { color: var(--color-text-secondary); }
.text-light { color: var(--color-text-light); }

/* Spacing Utilities */
.mt-0 { margin-top: 0; }
.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-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--space-sm); }
.mb-2 { margin-bottom: var(--space-md); }
.mb-3 { margin-bottom: var(--space-lg); }
.mb-4 { margin-bottom: var(--space-xl); }

.pt-0 { padding-top: 0; }
.pt-1 { padding-top: var(--space-sm); }
.pt-2 { padding-top: var(--space-md); }
.pt-3 { padding-top: var(--space-lg); }
.pt-4 { padding-top: var(--space-xl); }

.pb-0 { padding-bottom: 0; }
.pb-1 { padding-bottom: var(--space-sm); }
.pb-2 { padding-bottom: var(--space-md); }
.pb-3 { padding-bottom: var(--space-lg); }
.pb-4 { padding-bottom: var(--space-xl); }

/* Display Utilities */
.d-none { display: none; }
.d-block { display: block; }
.d-inline-block { display: inline-block; }
.d-flex { display: flex; }
.d-grid { display: grid; }

/* ==========================================================================
   12. Responsive Design
   ========================================================================== */

/* Tablet - 768px to 991px */
@media (max-width: 991px) {
    :root {
        --container-padding: var(--space-md);
    }

    .nav-desktop {
        display: none;
    }

    .hamburger {
        display: flex;
    }

    .nav-mobile-toggle {
        display: block;
    }

    .hero h1 {
        font-size: var(--font-size-3xl);
    }

    .category-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    }

    .items-grid {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Mobile - 480px to 767px */
@media (max-width: 767px) {
    .hero {
        padding: var(--space-2xl) 0;
    }

    .hero h1 {
        font-size: var(--font-size-2xl);
    }

    .hero p {
        font-size: var(--font-size-base);
        margin-bottom: 0;
    }

    .stats {
        gap: var(--space-xl);
    }

    .stat-number {
        font-size: var(--font-size-2xl);
    }

    .stat-label {
        font-size: var(--font-size-sm);
    }

    .search-box {
        flex-direction: column;
    }

    .search-input,
    .search-button {
        width: 100%;
    }

    .content {
        padding: var(--space-lg);
    }

    .category-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-md);
    }

    .items-grid {
        grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    }

    .macros,
    .nutrition-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }

    h1 {
        font-size: var(--font-size-2xl);
    }

    h2 {
        font-size: var(--font-size-xl);
    }

    h3 {
        font-size: var(--font-size-lg);
    }
}

/* Small Mobile - below 480px */
@media (max-width: 479px) {
    :root {
        --container-padding: var(--space-sm);
    }

    .logo-img {
        width: 120px;
        height: auto;
    }

    .logo-text {
        font-size: var(--font-size-base);
    }

    .category-grid {
        /* grid-template-columns: 1fr; */
    }

    .macros,
    .nutrition-grid {
        grid-template-columns: 1fr;
    }

    .nutrition-table {
        font-size: var(--font-size-sm);
    }

    .nutrition-table th,
    .nutrition-table td {
        padding: var(--space-sm);
    }
}

/* ==========================================================================
   13. Animations
   ========================================================================== */

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}

/* Loading Spinner */
.loading {
    display: inline-block;
    width: 24px;
    height: 24px;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* ==========================================================================
   14. Accessibility
   ========================================================================== */

/* Focus Styles */
:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Skip to Content Link */
.skip-to-content {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-primary);
    color: var(--color-text-inverse);
    padding: var(--space-sm) var(--space-md);
    text-decoration: none;
    z-index: 9999;
}

.skip-to-content:focus {
    top: 0;
}

/* Screen Reader Only */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    :root {
        --color-border: #000;
        --shadow-sm: 0 0 0 1px #000;
        --shadow-md: 0 0 0 2px #000;
    }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Dark Mode Support (Optional) */
@media (prefers-color-scheme: dark) {
    /* Add dark mode variables here if needed */
}

/* ==========================================================================
   15. Print Styles
   ========================================================================== */

@media print {
    .header,
    .footer,
    .nav-mobile-toggle,
    .search-box,
    .dropdown {
        display: none;
    }

    .content {
        box-shadow: none;
        padding: 0;
    }

    a {
        color: inherit;
        text-decoration: none;
    }

    .nutrition-table {
        box-shadow: none;
    }
}