/* ========================================
   iNews Hong Kong - Stylesheet
   Modern, Clean, SEO-Friendly News Web App
   ======================================== */

/* CSS Variables */
:root {
    /* Colors - Light Mode */
    --primary: #e63946;
    --primary-dark: #c1121f;
    --secondary: #1d3557;
    --accent: #457b9d;
    --background: #ffffff;
    --background-alt: #f8f9fa;
    --surface: #ffffff;
    --surface-hover: #f1f3f4;
    --text-primary: #1a1a2e;
    --text-secondary: #4a4a68;
    --text-muted: #6c757d;
    --border: #e9ecef;
    --border-light: #f1f3f4;
    --shadow: rgba(0, 0, 0, 0.08);
    --shadow-lg: rgba(0, 0, 0, 0.12);

    /* Category Colors */
    --local: #2a9d8f;
    --finance: #e76f51;
    --entertainment: #9b5de5;
    --tech: #00b4d8;
    --lifestyle: #f4a261;
    --sports: #06d6a0;

    /* Stock Colors */
    --stock-up: #10b981;
    --stock-down: #ef4444;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;

    /* Typography */
    --font-family: 'Noto Sans TC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;

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

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

    /* Z-index */
    --z-sticky: 100;
    --z-modal: 200;
    --z-toast: 300;
}

/* Dark Mode */
[data-theme="dark"] {
    --background: #0f0f1a;
    --background-alt: #1a1a2e;
    --surface: #16213e;
    --surface-hover: #1f2b4d;
    --text-primary: #f8f9fa;
    --text-secondary: #b8c1cc;
    --text-muted: #8892a0;
    --border: #2d3748;
    --border-light: #374151;
    --shadow: rgba(0, 0, 0, 0.3);
    --shadow-lg: rgba(0, 0, 0, 0.4);
}

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

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

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--background);
    transition: background-color var(--transition-base), color var(--transition-base);
}

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

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

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

ul, ol {
    list-style: none;
}

/* Container */
.container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

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

/* ========================================
   Header
   ======================================== */
.header {
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    background-color: var(--surface);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 1px 3px var(--shadow);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
    gap: var(--space-md);
}

/* Logo */
.logo, .footer-logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-weight: 700;
    font-size: var(--font-size-xl);
}

.logo-icon {
    font-size: 1.75rem;
}

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

.logo-hk {
    color: var(--primary);
}

/* Navigation */
.nav {
    display: none;
}

@media (min-width: 1024px) {
    .nav {
        display: block;
    }
}

.nav-list {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.nav-link {
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    font-weight: 500;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.nav-link:hover {
    color: var(--primary);
    background-color: var(--surface-hover);
}

.nav-link.active {
    color: var(--primary);
    background-color: rgba(230, 57, 70, 0.1);
}

/* Header Actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.search-btn, .theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.search-btn:hover, .theme-toggle:hover {
    background-color: var(--surface-hover);
    color: var(--primary);
}

.theme-toggle .sun-icon {
    display: none;
}

[data-theme="dark"] .theme-toggle .sun-icon {
    display: block;
}

[data-theme="dark"] .theme-toggle .moon-icon {
    display: none;
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    padding: 10px;
    border-radius: var(--radius-md);
}

@media (min-width: 1024px) {
    .menu-toggle {
        display: none;
    }
}

.menu-toggle span {
    display: block;
    width: 20px;
    height: 2px;
    background-color: var(--text-primary);
    transition: all var(--transition-fast);
}

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

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

.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Search Modal */
.search-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    padding: var(--space-md);
    background-color: var(--surface);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 4px 12px var(--shadow-lg);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: var(--z-modal);
}

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

.search-modal-content {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    max-width: 800px;
    margin: 0 auto;
}

.search-input {
    flex: 1;
    padding: var(--space-md) var(--space-lg);
    font-size: var(--font-size-lg);
    border: 2px solid var(--border);
    border-radius: var(--radius-lg);
    background-color: var(--background);
    color: var(--text-primary);
    transition: border-color var(--transition-fast);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary);
}

.search-input::placeholder {
    color: var(--text-muted);
}

.search-close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.search-close:hover {
    background-color: var(--surface-hover);
    color: var(--primary);
}

/* Mobile Navigation */
.nav.mobile-open {
    display: block;
    position: fixed;
    top: 65px;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--surface);
    padding: var(--space-lg);
    z-index: var(--z-modal);
    animation: slideIn var(--transition-base) ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.nav.mobile-open .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-xs);
}

.nav.mobile-open .nav-link {
    padding: var(--space-md);
    font-size: var(--font-size-lg);
}

/* ========================================
   Breaking News Ticker
   ======================================== */
.ticker {
    background: linear-gradient(90deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    overflow: hidden;
}

.ticker-content {
    display: flex;
    align-items: center;
    height: 40px;
    gap: var(--space-md);
}

.ticker-label {
    flex-shrink: 0;
    padding: var(--space-xs) var(--space-sm);
    background-color: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.ticker-wrapper {
    flex: 1;
    overflow: hidden;
    position: relative;
}

.ticker-track {
    display: flex;
    gap: var(--space-3xl);
    white-space: nowrap;
    animation: ticker 30s linear infinite;
}

.ticker-item {
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.ticker-item::before {
    content: '•';
    margin-right: var(--space-md);
    opacity: 0.6;
}

@keyframes ticker {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(-50%);
    }
}

.ticker:hover .ticker-track {
    animation-play-state: paused;
}

/* ========================================
   Main Content
   ======================================== */
.main {
    padding: var(--space-xl) 0;
}

/* Hero Section */
.hero {
    display: grid;
    gap: var(--space-lg);
    margin-bottom: var(--space-3xl);
}

@media (min-width: 1024px) {
    .hero {
        grid-template-columns: 2fr 1fr;
    }
}

.hero-main {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    cursor: pointer;
    transition: transform var(--transition-base);
}

.hero-main:hover {
    transform: translateY(-4px);
}

.hero-image {
    position: relative;
    aspect-ratio: 16/9;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-image.gradient-bg {
    background: linear-gradient(135deg, var(--secondary) 0%, #0d253f 100%);
}

.hero-image.gradient-finance {
    background: linear-gradient(135deg, #e76f51 0%, #c1121f 100%);
}

.hero-image.gradient-tech {
    background: linear-gradient(135deg, #00b4d8 0%, #0077b6 100%);
}

.hero-image.gradient-local {
    background: linear-gradient(135deg, #2a9d8f 0%, #1a5f52 100%);
}

.hero-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-icon {
    font-size: 6rem;
    opacity: 0.3;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.hero-icon svg {
    width: 120px;
    height: 120px;
    stroke: white;
    opacity: 0.25;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.85) 0%, rgba(0, 0, 0, 0.2) 60%, transparent 100%);
}

.hero-content {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--space-xl);
    color: white;
}

.hero-content h1 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: var(--space-sm);
}

@media (min-width: 768px) {
    .hero-content h1 {
        font-size: var(--font-size-3xl);
    }
}

.hero-content p {
    font-size: var(--font-size-base);
    opacity: 0.9;
    margin-bottom: var(--space-md);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-meta {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    font-size: var(--font-size-sm);
    opacity: 0.8;
}

.article-meta time::before {
    content: '📅';
    margin-right: var(--space-xs);
}

.read-time::before {
    content: '⏱️';
    margin-right: var(--space-xs);
}

/* Category Tags */
.category-tag {
    display: inline-block;
    padding: var(--space-xs) var(--space-sm);
    background-color: var(--primary);
    color: white;
    font-size: var(--font-size-xs);
    font-weight: 600;
    border-radius: var(--radius-sm);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.tag-local { background-color: var(--local); }
.tag-finance { background-color: var(--finance); }
.tag-entertainment { background-color: var(--entertainment); }
.tag-tech { background-color: var(--tech); }
.tag-lifestyle { background-color: var(--lifestyle); }
.tag-sports { background-color: var(--sports); }

/* Hero Side Cards */
.hero-side {
    display: grid;
    gap: var(--space-lg);
}

.hero-card {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    cursor: pointer;
    transition: transform var(--transition-base);
}

.hero-card:hover {
    transform: translateY(-4px);
}

.hero-card-bg {
    width: 100%;
    height: 180px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.hero-card-bg.gradient-finance {
    background: linear-gradient(135deg, #e76f51 0%, #c1121f 100%);
}

.hero-card-bg.gradient-tech {
    background: linear-gradient(135deg, #00b4d8 0%, #0077b6 100%);
}

.hero-card-bg.gradient-local {
    background: linear-gradient(135deg, #2a9d8f 0%, #1a5f52 100%);
}

.hero-card-bg svg {
    width: 64px;
    height: 64px;
    stroke: white;
    opacity: 0.3;
}

.hero-card img {
    width: 100%;
    height: 180px;
    object-fit: cover;
}

.hero-card-content {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--space-md);
    background: linear-gradient(to top, rgba(0, 0, 0, 0.85) 0%, rgba(0, 0, 0, 0.4) 70%, transparent 100%);
    color: white;
}

.hero-card-content h2 {
    font-size: var(--font-size-base);
    font-weight: 600;
    line-height: 1.4;
    margin-top: var(--space-sm);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.hero-card-content time {
    font-size: var(--font-size-xs);
    opacity: 0.8;
}

/* ========================================
   News Section
   ======================================== */
.news-section {
    margin-bottom: var(--space-3xl);
}

.section-header {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
    padding-bottom: var(--space-md);
    border-bottom: 2px solid var(--border);
}

.section-title {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--text-primary);
}

.section-title svg {
    color: var(--primary);
}

.view-all {
    font-weight: 500;
    color: var(--primary);
    transition: color var(--transition-fast);
}

.view-all:hover {
    color: var(--primary-dark);
}

/* Filter Tabs */
.filter-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
}

.filter-tab {
    padding: var(--space-sm) var(--space-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
    background-color: var(--surface-hover);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.filter-tab:hover {
    color: var(--primary);
    background-color: rgba(230, 57, 70, 0.1);
}

.filter-tab.active {
    color: white;
    background-color: var(--primary);
}

/* News Grid */
.news-grid {
    display: grid;
    gap: var(--space-lg);
}

@media (min-width: 640px) {
    .news-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .news-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 1280px) {
    .news-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* News Card */
.news-card {
    background-color: var(--surface);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border);
    transition: all var(--transition-base);
    cursor: pointer;
}

.news-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px var(--shadow-lg);
    border-color: var(--primary);
}

.news-card-image {
    position: relative;
    aspect-ratio: 16/10;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.news-card-image.gradient-finance {
    background: linear-gradient(135deg, #e76f51 0%, #c1121f 100%);
}

.news-card-image.gradient-tech {
    background: linear-gradient(135deg, #00b4d8 0%, #0077b6 100%);
}

.news-card-image.gradient-local {
    background: linear-gradient(135deg, #2a9d8f 0%, #1a5f52 100%);
}

.news-card-image svg {
    width: 48px;
    height: 48px;
    stroke: white;
    opacity: 0.4;
    transition: transform var(--transition-slow), opacity var(--transition-slow);
}

.news-card:hover .news-card-image svg {
    transform: scale(1.1);
    opacity: 0.5;
}

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

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

.news-card-content {
    padding: var(--space-md);
}

.news-card-content .category-tag {
    margin-bottom: var(--space-sm);
}

.news-card-content h3 {
    font-size: var(--font-size-base);
    font-weight: 600;
    line-height: 1.5;
    margin-bottom: var(--space-sm);
    color: var(--text-primary);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-card-content p {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: var(--space-sm);
}

.news-card-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

/* Load More Button */
.load-more {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    width: 100%;
    max-width: 300px;
    margin: var(--space-xl) auto 0;
    padding: var(--space-md) var(--space-xl);
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--primary);
    background-color: transparent;
    border: 2px solid var(--primary);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
}

.load-more:hover {
    color: white;
    background-color: var(--primary);
}

.load-more:active {
    transform: scale(0.98);
}

/* ========================================
   Two Column Layout
   ======================================== */
.two-column {
    display: grid;
    gap: var(--space-xl);
    margin-bottom: var(--space-3xl);
}

@media (min-width: 1024px) {
    .two-column {
        grid-template-columns: 2fr 1fr;
    }
}

/* Popular Section */
.popular-section {
    background-color: var(--surface);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    border: 1px solid var(--border);
}

.popular-section .section-title {
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-md);
    border-bottom: 2px solid var(--border);
}

.popular-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.popular-item {
    display: flex;
    gap: var(--space-md);
    padding: var(--space-md);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

.popular-item:hover {
    background-color: var(--surface-hover);
}

.popular-rank {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    font-size: var(--font-size-sm);
    font-weight: 700;
    border-radius: var(--radius-md);
}

.popular-item:nth-child(1) .popular-rank {
    background: linear-gradient(135deg, #ffd700 0%, #ffb347 100%);
    color: #1a1a2e;
}

.popular-item:nth-child(2) .popular-rank {
    background: linear-gradient(135deg, #c0c0c0 0%, #a8a8a8 100%);
    color: #1a1a2e;
}

.popular-item:nth-child(3) .popular-rank {
    background: linear-gradient(135deg, #cd7f32 0%, #b8860b 100%);
    color: white;
}

.popular-content {
    flex: 1;
    min-width: 0;
}

.popular-content h4 {
    font-size: var(--font-size-base);
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: var(--space-xs);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.popular-meta {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

.popular-views::before {
    content: '👁️';
    margin-right: var(--space-xs);
}

/* ========================================
   Sidebar Widgets
   ======================================== */
.sidebar {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.widget {
    background-color: var(--surface);
    border-radius: var(--radius-xl);
    padding: var(--space-lg);
    border: 1px solid var(--border);
}

.widget-title {
    font-size: var(--font-size-lg);
    font-weight: 700;
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-sm);
    border-bottom: 2px solid var(--primary);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.widget-title svg {
    color: var(--primary);
}

/* Latest News Widget */
.latest-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.latest-item {
    display: block;
    padding: var(--space-sm);
    border-radius: var(--radius-md);
    background-color: var(--background-alt);
    text-decoration: none;
    color: var(--text);
    transition: all var(--transition-fast);
    border-left: 3px solid transparent;
}

.latest-item:hover {
    background-color: var(--primary-light);
    border-left-color: var(--primary);
    transform: translateX(4px);
}

.latest-item-title {
    font-size: var(--font-size-sm);
    font-weight: 500;
    line-height: 1.4;
    margin-bottom: var(--space-xs);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.latest-item-meta {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

.latest-item-category {
    color: var(--primary);
    font-weight: 600;
}

/* Weather Widget */
.weather-content {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.weather-main {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.weather-icon {
    font-size: 3rem;
    line-height: 1;
}

.weather-temp {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--primary);
}

.weather-details {
    flex: 1;
}

.weather-desc {
    font-weight: 600;
    margin-bottom: var(--space-xs);
}

.weather-humidity, .weather-location {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

/* Stock Widget */
.stock-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.stock-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-sm);
    border-radius: var(--radius-md);
    background-color: var(--background-alt);
}

.stock-name {
    font-weight: 500;
    font-size: var(--font-size-sm);
}

.stock-value {
    font-weight: 600;
}

.stock-change {
    font-size: var(--font-size-sm);
    font-weight: 600;
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
}

.stock-value.up, .stock-change.up {
    color: var(--stock-up);
}

.stock-change.up {
    background-color: rgba(16, 185, 129, 0.1);
}

.stock-value.down, .stock-change.down {
    color: var(--stock-down);
}

.stock-change.down {
    background-color: rgba(239, 68, 68, 0.1);
}

/* Newsletter Widget */
.newsletter-desc {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
}

.newsletter-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.newsletter-input {
    padding: var(--space-md);
    font-size: var(--font-size-base);
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    background-color: var(--background);
    color: var(--text-primary);
    transition: border-color var(--transition-fast);
}

.newsletter-input:focus {
    outline: none;
    border-color: var(--primary);
}

.newsletter-input::placeholder {
    color: var(--text-muted);
}

.newsletter-btn {
    padding: var(--space-md);
    font-size: var(--font-size-base);
    font-weight: 600;
    color: white;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.newsletter-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(230, 57, 70, 0.4);
}

/* ========================================
   Category Section
   ======================================== */
.category-section {
    margin-bottom: var(--space-3xl);
}

.category-grid {
    display: grid;
    gap: var(--space-lg);
}

@media (min-width: 640px) {
    .category-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .category-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* ========================================
   SEO Section
   ======================================== */
.seo-section {
    background-color: var(--background-alt);
    padding: var(--space-3xl) 0;
    border-top: 1px solid var(--border);
}

.seo-content {
    max-width: 900px;
}

.seo-content h2 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--space-lg);
    color: var(--text-primary);
}

.seo-content h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-top: var(--space-xl);
    margin-bottom: var(--space-md);
    color: var(--text-primary);
}

.seo-content p {
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
    line-height: 1.8;
}

.seo-content ul {
    margin-bottom: var(--space-md);
    padding-left: var(--space-lg);
}

.seo-content li {
    color: var(--text-secondary);
    margin-bottom: var(--space-sm);
    line-height: 1.8;
    list-style-type: disc;
}

.seo-content strong {
    color: var(--text-primary);
}

/* ========================================
   Footer
   ======================================== */
.footer {
    background-color: var(--surface);
    border-top: 1px solid var(--border);
    padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-grid {
    display: grid;
    gap: var(--space-xl);
    margin-bottom: var(--space-xl);
}

@media (min-width: 640px) {
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .footer-grid {
        grid-template-columns: 2fr 1fr 1fr 1fr;
    }
}

.footer-brand {
    max-width: 300px;
}

.footer-logo {
    margin-bottom: var(--space-md);
}

.footer-desc {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
    line-height: 1.7;
}

.social-links {
    display: flex;
    gap: var(--space-sm);
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: var(--surface-hover);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.social-link:hover {
    background-color: var(--primary);
    color: white;
}

.footer-links h4 {
    font-size: var(--font-size-base);
    font-weight: 600;
    margin-bottom: var(--space-md);
    color: var(--text-primary);
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.footer-links a {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    padding-top: var(--space-xl);
    border-top: 1px solid var(--border);
    text-align: center;
}

.footer-bottom p {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    margin-bottom: var(--space-xs);
}

/* ========================================
   Back to Top Button
   ======================================== */
.back-to-top {
    position: fixed;
    bottom: var(--space-xl);
    right: var(--space-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    border-radius: var(--radius-full);
    box-shadow: 0 4px 12px rgba(230, 57, 70, 0.4);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-base);
    z-index: var(--z-sticky);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: 0 6px 20px rgba(230, 57, 70, 0.5);
}

/* ========================================
   Toast Notification
   ======================================== */
.toast {
    position: fixed;
    bottom: var(--space-xl);
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    padding: var(--space-md) var(--space-xl);
    background-color: var(--secondary);
    color: white;
    border-radius: var(--radius-lg);
    box-shadow: 0 4px 20px var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: var(--z-toast);
}

.toast.visible {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
    visibility: visible;
}

/* ========================================
   Animations
   ======================================== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.news-card {
    animation: fadeIn var(--transition-base) ease;
}

/* Skeleton Loading */
.skeleton {
    background: linear-gradient(90deg, var(--surface-hover) 25%, var(--border) 50%, var(--surface-hover) 75%);
    background-size: 200% 100%;
    animation: skeleton 1.5s infinite;
    border-radius: var(--radius-md);
}

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

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

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

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

    .ticker-track {
        animation: none;
    }
}

/* Print Styles */
@media print {
    .header, .ticker, .sidebar, .back-to-top, .footer {
        display: none;
    }

    .main {
        padding: 0;
    }

    .news-card {
        break-inside: avoid;
    }
}