/* ============================================
   CSS Variables - Easy Theming
   ============================================ */
:root {
    /* Colors - Professional Editorial Palette */
    --color-primary: #0f2942;        /* Deep Navy */
    --color-primary-light: #1a3e5c;
    --color-primary-dark: #081728;
    --color-accent: #d4a574;         /* Warm Gold */
    --color-accent-light: #e6c49a;
    --color-accent-dark: #b8865a;
    
    --color-text-primary: #1a1a1a;
    --color-text-secondary: #4a4a4a;
    --color-text-light: #737373;
    
    --color-bg-primary: #ffffff;
    --color-bg-secondary: #f8f9fa;
    --color-bg-tertiary: #f0f2f5;
    
    --color-border: #e0e4e8;
    --color-border-light: #f0f2f5;
    
    /* Typography */
    --font-display: 'Playfair Display', Georgia, serif;
    --font-body: 'Source Serif 4', Georgia, serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 16px 40px rgba(0, 0, 0, 0.15);
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Breakpoints (for reference) */
    --bp-sm: 640px;
    --bp-md: 768px;
    --bp-lg: 1024px;
    --bp-xl: 1280px;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.7;
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
    overflow-x: hidden;
}

body.menu-open {
    overflow: hidden;
}

/* ============================================
   Typography
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
}

h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
}

h3 {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
}

p {
    margin-bottom: var(--spacing-md);
}

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

a:hover {
    color: var(--color-accent);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ============================================
   Skip Link (Accessibility)
   ============================================ */
.skip-link {
    position: absolute;
    top: -100px;
    left: 0;
    background: var(--color-primary);
    color: white;
    padding: var(--spacing-sm) var(--spacing-md);
    z-index: 10000;
    border-radius: 0 0 var(--radius-md) 0;
}

.skip-link:focus {
    top: 0;
}

/* ============================================
   Container
   ============================================ */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

@media (min-width: 768px) {
    .container {
        padding: 0 var(--spacing-lg);
    }
}

/* ============================================
   Header & Navigation
   ============================================ */
.site-header {
    background: var(--color-bg-primary);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
}

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

.logo {
    font-size: 1.75rem;
    font-family: var(--font-display);
    font-weight: 800;
    color: var(--color-primary);
    text-decoration: none;
    transition: transform var(--transition-base);
}

.logo:hover {
    transform: scale(1.05);
    color: var(--color-primary);
}

.logo-accent {
    color: var(--color-accent);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
    z-index: 1001;
}

.hamburger {
    display: block;
    width: 26px;
    height: 2px;
    background: var(--color-primary);
    position: relative;
    transition: background var(--transition-base);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 26px;
    height: 2px;
    background: var(--color-primary);
    transition: transform var(--transition-base);
}

.hamburger::before {
    top: -8px;
}

.hamburger::after {
    bottom: -8px;
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger {
    background: transparent;
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger::before {
    transform: rotate(45deg) translateY(8px);
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger::after {
    transform: rotate(-45deg) translateY(-8px);
}

/* Navigation */
.main-nav ul {
    list-style: none;
    display: flex;
    gap: var(--spacing-lg);
    align-items: center;
}

.main-nav a {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-text-primary);
    padding: var(--spacing-xs) 0;
    position: relative;
    letter-spacing: 0.3px;
}

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-accent);
    transition: width var(--transition-base);
}

.main-nav a:hover::after,
.main-nav a.active::after {
    width: 100%;
}

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

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: white;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-base);
    margin-top: var(--spacing-sm);
}

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

.dropdown-menu li {
    display: block;
}

.dropdown-menu a {
    display: block;
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--color-text-primary);
    border-bottom: 1px solid var(--color-border-light);
}

.dropdown-menu a::after {
    display: none;
}

.dropdown-menu li:last-child a {
    border-bottom: none;
}

.dropdown-menu a:hover {
    background: var(--color-bg-secondary);
    color: var(--color-accent);
}

/* Mobile Navigation */
@media (max-width: 767px) {
    .mobile-menu-toggle {
        display: block;
    }
    
    .main-nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 320px;
        height: 100vh;
        background: white;
        box-shadow: var(--shadow-xl);
        padding: var(--spacing-3xl) var(--spacing-lg) var(--spacing-xl);
        transition: right var(--transition-base);
        overflow-y: auto;
    }
    
    .main-nav.active {
        right: 0;
    }
    
    .main-nav ul {
        flex-direction: column;
        gap: 0;
        align-items: stretch;
    }
    
    .main-nav a {
        display: block;
        padding: var(--spacing-md) 0;
        border-bottom: 1px solid var(--color-border-light);
        font-size: 1.1rem;
    }
    
    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: none;
        margin-top: 0;
        padding-left: var(--spacing-md);
    }
    
    .dropdown-menu a {
        font-size: 0.95rem;
        padding: var(--spacing-sm) 0;
    }
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    position: relative;
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: white;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    opacity: 0.1;
    pointer-events: none;
}

.bg-pattern {
    position: absolute;
    inset: -50%;
    background-image: 
        linear-gradient(45deg, transparent 48%, var(--color-accent) 49%, var(--color-accent) 51%, transparent 52%),
        linear-gradient(-45deg, transparent 48%, var(--color-accent) 49%, var(--color-accent) 51%, transparent 52%);
    background-size: 40px 40px;
    animation: patternMove 30s linear infinite;
}

@keyframes patternMove {
    0% {
        transform: translate(0, 0);
    }
    100% {
        transform: translate(40px, 40px);
    }
}

.hero-content {
    position: relative;
    z-index: 1;
    display: grid;
    gap: var(--spacing-2xl);
    align-items: center;
}

.hero-title {
    color: white;
    margin-bottom: var(--spacing-md);
    animation: fadeInUp 0.8s ease;
}

.hero-title .highlight {
    color: var(--color-accent-light);
    position: relative;
    display: inline-block;
}

.hero-subtitle {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.9);
    max-width: 600px;
    line-height: 1.8;
    animation: fadeInUp 0.8s ease 0.2s backwards;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    margin-top: var(--spacing-lg);
    animation: fadeInUp 0.8s ease 0.4s backwards;
}

.hero-visual {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-md);
}

.visual-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    text-align: center;
    transition: transform var(--transition-base), background var(--transition-base);
    animation: fadeInUp 0.8s ease backwards;
}

.visual-card:nth-child(1) {
    animation-delay: 0.5s;
}

.visual-card:nth-child(2) {
    animation-delay: 0.6s;
}

.visual-card:nth-child(3) {
    animation-delay: 0.7s;
}

.visual-card:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.15);
}

.visual-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.visual-card h3 {
    color: white;
    font-size: 1.1rem;
    margin-bottom: var(--spacing-xs);
}

.visual-card p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
    margin: 0;
}

@media (min-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-3xl);
    }
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    border-radius: var(--radius-md);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    min-height: 48px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn-primary {
    background: var(--color-accent);
    color: white;
    border-color: var(--color-accent);
}

.btn-primary:hover {
    background: var(--color-accent-dark);
    border-color: var(--color-accent-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: transparent;
    color: white;
    border-color: rgba(255, 255, 255, 0.5);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: white;
}

.btn-large {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1.125rem;
}

/* ============================================
   Section Styles
   ============================================ */
.section-header {
    margin-bottom: var(--spacing-2xl);
}

.section-header.centered {
    text-align: center;
}

.section-title {
    margin-bottom: var(--spacing-sm);
}

.section-subtitle {
    color: var(--color-text-secondary);
    font-size: 1.125rem;
}

.view-all-link {
    color: var(--color-accent);
    font-weight: 600;
    font-size: 1rem;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    transition: gap var(--transition-base);
}

.view-all-link:hover {
    gap: var(--spacing-sm);
}

/* ============================================
   Categories Section
   ============================================ */
.categories-section {
    padding: var(--spacing-3xl) 0;
    background: var(--color-bg-secondary);
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.category-card {
    background: white;
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 2px solid var(--color-border-light);
    transition: all var(--transition-base);
    text-decoration: none;
    display: block;
    opacity: 0;
    transform: translateY(20px);
}

.category-card.animate-in {
    opacity: 1;
    transform: translateY(0);
    animation: fadeInUp 0.6s ease forwards;
}

.category-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.category-icon {
    font-size: 2.5rem;
    display: block;
    margin-bottom: var(--spacing-sm);
}

.category-card h3 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
    font-size: 1.25rem;
}

.category-card p {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    margin: 0;
}

/* ============================================
   Latest Articles Section
   ============================================ */
.latest-articles {
    padding: var(--spacing-3xl) 0;
}

.latest-articles .section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.article-card {
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--color-border);
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
    opacity: 0;
    transform: translateY(20px);
}

.article-card.animate-in {
    opacity: 1;
    transform: translateY(0);
    animation: fadeInUp 0.6s ease forwards;
}

.article-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--color-accent-light);
}

.article-card.featured {
    grid-column: 1 / -1;
}

@media (min-width: 768px) {
    .article-card.featured {
        grid-column: span 2;
        flex-direction: row;
    }
    
    .article-card.featured .article-image {
        flex: 1;
    }
    
    .article-card.featured .article-content {
        flex: 1;
    }
}

.article-image {
    position: relative;
    overflow: hidden;
    background: var(--color-bg-tertiary);
    aspect-ratio: 16 / 9;
}

.article-card.featured .article-image {
    aspect-ratio: 4 / 3;
}

.article-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.article-card:hover .article-image img {
    transform: scale(1.05);
}

.article-badge {
    position: absolute;
    top: var(--spacing-sm);
    left: var(--spacing-sm);
    background: var(--color-accent);
    color: white;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.article-content {
    padding: var(--spacing-md);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.article-category {
    display: inline-block;
    color: var(--color-accent);
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--spacing-xs);
}

.article-title {
    margin-bottom: var(--spacing-sm);
}

.article-title a {
    color: var(--color-primary);
    transition: color var(--transition-fast);
}

.article-title a:hover {
    color: var(--color-accent);
}

.article-excerpt {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
    flex: 1;
}

.article-meta {
    display: flex;
    gap: var(--spacing-md);
    font-size: 0.85rem;
    color: var(--color-text-light);
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--color-border-light);
}

.article-date::before {
    content: '📅 ';
}

.article-author::before {
    content: '✍️ ';
}

.cta-section {
    text-align: center;
    margin-top: var(--spacing-2xl);
}

/* ============================================
   Why Section
   ============================================ */
.why-section {
    padding: var(--spacing-3xl) 0;
    background: var(--color-primary);
    color: white;
}

.why-section .section-title,
.why-section .section-subtitle {
    color: white;
}

.why-section .section-subtitle {
    color: rgba(255, 255, 255, 0.8);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-2xl);
}

.feature-item {
    text-align: center;
    padding: var(--spacing-lg);
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all var(--transition-base);
    opacity: 0;
    transform: translateY(20px);
}

.feature-item.animate-in {
    opacity: 1;
    transform: translateY(0);
    animation: fadeInUp 0.6s ease forwards;
}

.feature-item:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-5px);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    color: var(--color-accent-light);
}

.feature-item h3 {
    color: white;
    margin-bottom: var(--spacing-sm);
}

.feature-item p {
    color: rgba(255, 255, 255, 0.8);
    margin: 0;
}

/* ============================================
   Footer
   ============================================ */
.site-footer {
    background: var(--color-primary-dark);
    color: rgba(255, 255, 255, 0.8);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-column h3,
.footer-column h4 {
    color: white;
    margin-bottom: var(--spacing-md);
}

.footer-description {
    font-size: 0.95rem;
    line-height: 1.6;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--spacing-sm);
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
    transition: all var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-accent-light);
    padding-left: var(--spacing-xs);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
}

/* ============================================
   Animations
   ============================================ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

/* ============================================
   Responsive Adjustments
   ============================================ */
@media (max-width: 767px) {
    :root {
        --spacing-xl: 2rem;
        --spacing-2xl: 3rem;
        --spacing-3xl: 4rem;
    }
    
    .hero {
        padding: var(--spacing-2xl) 0;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .articles-grid {
        grid-template-columns: 1fr;
    }
    
    .article-card.featured {
        flex-direction: column;
    }
}

@media (min-width: 768px) and (max-width: 1023px) {
    .articles-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ============================================
   Print Styles
   ============================================ */
@media print {
    .site-header,
    .hero,
    .categories-section,
    .why-section,
    .site-footer,
    .mobile-menu-toggle,
    .skip-link {
        display: none !important;
    }
}