/*
================================================================================
FILE: assets/css/styles.css
================================================================================
DEVELOPER DOCUMENTATION:
LINES 1-50: Core Typography & Google Font Imports. Imports premium Inter & Geist Mono fonts.
LINES 51-100: CSS Variables & Design Tokens (Color Palette, Spacing, Transitions, Shadows).
LINES 101-160: Global Reset, Base Styles, and Scrollbar Customization.
LINES 161-240: Typography Styles (Headings, Paragraphs, Accents, and Lists).
LINES 241-350: Sticky Floating Navbar, Logo Typography, & Interactive Hamburger Menu.
LINES 351-480: Hero Section, Featured Story Cards, and Masonry Layout Systems.
LINES 481-600: Article Page Styles (Sticky TOC, Floating Share, Progress Bar, Typography).
LINES 601-700: Search Overlay UI, Category Cards, and Form Input Elements.
LINES 701-800: Footer Layout, Subsidiaries Highlight, & Micro-animations.
================================================================================
*/

/* --- Google Fonts Import --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:ital,opsz,wght@0,14..32,100..900;1,14..32,100..900&family=Geist+Mono:wght@100..900&display=swap');

/* --- CSS Variables & Design Tokens --- */
:root {
    /* Color Palette (Strict Black, White, and Curated Grayscale) */
    --color-black: #000000;
    --color-white: #ffffff;
    --color-gray-950: #0a0a0a;
    --color-gray-900: #121212;
    --color-gray-800: #1a1a1a;
    --color-gray-700: #2d2d2d;
    --color-gray-600: #4a4a4a;
    --color-gray-500: #737373;
    --color-gray-400: #a3a3a3;
    --color-gray-300: #d4d4d4;
    --color-gray-200: #e5e5e5;
    --color-gray-100: #f5f5f5;
    --color-gray-50: #fafafa;

    /* Semantic Mappings */
    --bg-primary: var(--color-white);
    --bg-secondary: var(--color-gray-50);
    --bg-tertiary: var(--color-gray-100);
    --text-primary: var(--color-black);
    --text-secondary: var(--color-gray-600);
    --text-muted: var(--color-gray-400);
    --border-color: var(--color-gray-200);
    --border-focus: var(--color-black);

    /* Fonts */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-mono: 'Geist Mono', monospace;

    /* Spacing System (Luxurious Editorial Whitespace) */
    --space-xs: 0.5rem;   /* 8px */
    --space-sm: 1rem;     /* 16px */
    --space-md: 1.5rem;   /* 24px */
    --space-lg: 2.5rem;   /* 40px */
    --space-xl: 4rem;     /* 64px */
    --space-xxl: 6.5rem;  /* 104px */
    --max-width: 1400px;
    --article-width: 760px;

    /* Transitions & Animations */
    --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-slow: 0.8s cubic-bezier(0.16, 1, 0.3, 1);

    /* Shadows & Effects */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.06);
    --glass-bg: rgba(255, 255, 255, 0.75);
    --glass-blur: 24px;
}

/* --- Global 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-sans);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Custom Selection Highlight */
::selection {
    background-color: var(--color-black);
    color: var(--color-white);
}

/* Scrollbar Styles */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
    background: var(--color-gray-300);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--color-gray-500);
}

/* Common Layout Containers */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-md);
    position: relative;
}

/* Reading container for left-aligned, width-restricted text blocks */
.reading-container {
    max-width: var(--article-width); /* 760px */
    margin-left: 0;
    margin-right: auto;
}

/* --- Typography System --- */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.15;
    color: var(--text-primary);
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
}

h2 {
    font-size: clamp(1.8rem, 3.5vw, 2.5rem);
    margin-bottom: var(--space-md);
}

h3 {
    font-size: clamp(1.4rem, 2.5vw, 1.75rem);
}

p {
    font-size: 1.05rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

.text-meta {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
}

.text-lead {
    font-size: 1.25rem;
    font-weight: 400;
    color: var(--text-secondary);
    line-height: 1.6;
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.8rem 1.8rem;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border: 1px solid var(--color-black);
    background-color: var(--color-black);
    color: var(--color-white);
    cursor: pointer;
    transition: var(--transition-smooth);
}

.btn:hover {
    background-color: var(--color-white);
    color: var(--color-black);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-black);
}

.btn-secondary:hover {
    background-color: var(--color-black);
    color: var(--color-white);
}

/* --- Sticky Floating Navbar --- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    background-color: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    transition: padding var(--transition-smooth), background var(--transition-smooth);
    padding: var(--space-md) 0;
}

.navbar.scrolled {
    padding: var(--space-xs) 0;
    box-shadow: var(--shadow-sm);
    background-color: rgba(255, 255, 255, 0.9);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* Brand Logo Layout */
.brand {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.brand-img {
    height: 72px;
    max-height: 72px;
    object-fit: contain;
    transition: var(--transition-smooth);
}

.navbar.scrolled .brand-img {
    height: 50px;
    max-height: 50px;
}

.brand-text {
    font-family: var(--font-sans);
    font-weight: 800;
    font-size: 1.3rem;
    letter-spacing: -0.04em;
    text-transform: uppercase;
    display: flex;
    align-items: center;
    color: var(--color-black);
}

.brand-text span {
    font-weight: 300;
    color: var(--color-gray-500);
    margin-left: 4px;
}

/* Navigation Links */
.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    list-style: none;
}

.nav-link {
    font-family: var(--font-sans);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    position: relative;
    padding: 0.5rem 0;
}

.nav-link:hover, .nav-link.active {
    color: var(--color-black);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background-color: var(--color-black);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform var(--transition-smooth);
}

.nav-link:hover::after, .nav-link.active::after {
    transform: scaleX(1);
    transform-origin: left;
}

/* Search Trigger Button */
.search-trigger {
    background: none;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem;
    color: var(--text-primary);
    transition: var(--transition-fast);
}

.search-trigger:hover {
    transform: scale(1.05);
}

/* Hamburger Menu Toggle */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 110;
}

.menu-toggle span {
    width: 24px;
    height: 2px;
    background-color: var(--color-black);
    transition: var(--transition-smooth);
}

/* --- Hero Section --- */
.hero {
    padding-top: calc(var(--space-xxl) + 2rem);
    padding-bottom: var(--space-xl);
    border-bottom: 1px solid var(--border-color);
}

.hero-meta {
    margin-bottom: var(--space-sm);
}

.hero-title {
    margin-bottom: var(--space-md);
    animation: fadeInUp var(--transition-slow);
}

.hero-desc {
    max-width: 680px;
    margin-bottom: var(--space-lg);
}

/* --- Featured Stories Grid --- */
.section-featured {
    padding: var(--space-xl) 0;
}

.featured-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--space-lg);
    margin-top: var(--space-md);
}

/* Cards & Editorial Cards */
.story-card {
    display: flex;
    flex-direction: column;
    border: 1px solid var(--border-color);
    background-color: var(--bg-primary);
    transition: transform var(--transition-smooth), border var(--transition-smooth), box-shadow var(--transition-smooth);
    position: relative;
    overflow: hidden;
    height: 100%;
}

.story-card:hover {
    transform: translateY(-4px);
    border-color: var(--color-black);
    box-shadow: var(--shadow-md);
}

.story-img-container {
    width: 100%;
    aspect-ratio: 16/9;
    overflow: hidden;
    background-color: var(--color-gray-100);
}

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

.story-card:hover .story-img {
    transform: scale(1.03);
}

.story-content {
    padding: var(--space-md);
    display: flex;
    flex-direction: column;
    flex-grow: 1;
    gap: var(--space-sm);
}

.story-category {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    color: var(--color-black);
    text-transform: uppercase;
}

.story-title {
    font-size: 1.4rem;
    font-weight: 700;
    line-height: 1.25;
}

.story-desc {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.story-footer {
    margin-top: auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--border-color);
    padding-top: var(--space-sm);
}

.story-date {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
}

.story-readtime {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Featured Large Layout Variation */
.story-card.large {
    grid-column: span 1;
}

.story-card.large .story-img-container {
    aspect-ratio: 21/9;
}

.story-card.large .story-title {
    font-size: 1.8rem;
}

/* --- Masonry/Grid Updates --- */
.section-latest {
    padding: var(--space-xl) 0;
    border-top: 1px solid var(--border-color);
}

.latest-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
}

/* --- Quick Categories --- */
.section-categories {
    padding: var(--space-xl) 0;
    border-top: 1px solid var(--border-color);
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--space-sm);
}

.cat-card {
    border: 1px solid var(--border-color);
    padding: var(--space-md);
    text-align: left;
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
    transition: var(--transition-smooth);
}

.cat-card:hover {
    border-color: var(--color-black);
    background-color: var(--color-gray-50);
}

.cat-card-title {
    font-size: 1.15rem;
    font-weight: 700;
}

.cat-card-desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* --- Investor & Subsidiary Highlights --- */
.section-highlights {
    padding: var(--space-xl) 0;
    border-top: 1px solid var(--border-color);
}

.highlights-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
}

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

.highlight-item {
    border-left: 2px solid var(--color-black);
    padding-left: var(--space-md);
    padding-bottom: var(--space-sm);
}

.highlight-item-meta {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: var(--space-xs);
}

.highlight-item-title {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.highlight-item-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* --- Article Details / Post System --- */
.article-header {
    padding-top: calc(var(--space-xxl) + 2rem);
    padding-bottom: var(--space-lg);
    border-bottom: 1px solid var(--border-color);
}

.article-category-label {
    font-family: var(--font-mono);
    font-weight: 600;
    color: var(--color-black);
    text-transform: uppercase;
    font-size: 0.8rem;
    margin-bottom: var(--space-sm);
    display: block;
}

.article-title {
    font-size: clamp(2rem, 4.5vw, 3.5rem);
    line-height: 1.1;
    margin-bottom: var(--space-sm);
    letter-spacing: -0.04em;
}

.article-subtitle {
    font-size: clamp(1.15rem, 2.5vw, 1.4rem);
    color: var(--text-secondary);
    line-height: 1.4;
    margin-bottom: var(--space-md);
    font-weight: 400;
}

.article-meta-group {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-md);
    padding-top: var(--space-sm);
    border-top: 1px solid var(--border-color);
}

.article-author-info {
    display: flex;
    align-items: center;
    gap: 8px;
}

.article-author-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background-color: var(--color-black);
    color: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: bold;
}

.article-author-name {
    font-size: 0.9rem;
    font-weight: 600;
}

/* Reading Progress Indicators */
.progress-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background-color: rgba(0, 0, 0, 0.05);
    z-index: 101;
}

.progress-bar {
    height: 100%;
    width: 0%;
    background-color: var(--color-black);
    transition: width 0.1s ease-out;
}

/* Article Body Grid layout */
.article-layout {
    display: grid;
    grid-template-columns: 200px 1fr 200px;
    gap: var(--space-lg);
    margin: var(--space-lg) auto var(--space-xl) auto;
    max-width: var(--max-width);
    padding: 0 var(--space-md);
}

/* Sidebar Elements (TOC, Share) */
.article-sidebar-left {
    grid-column: 1;
    position: sticky;
    top: 120px;
    height: fit-content;
}

.article-sidebar-right {
    grid-column: 3;
    position: sticky;
    top: 120px;
    height: fit-content;
}

.article-toc-title, .share-title {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: var(--space-sm);
    letter-spacing: 0.05em;
}

.article-toc-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.article-toc-link {
    font-size: 0.85rem;
    color: var(--text-secondary);
    display: block;
    line-height: 1.3;
}

.article-toc-link:hover, .article-toc-link.active {
    color: var(--color-black);
    font-weight: 600;
}

/* Floating/Sticky Share buttons */
.share-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.share-btn {
    border: 1px solid var(--border-color);
    background: none;
    color: var(--text-primary);
    padding: 0.6rem;
    cursor: pointer;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: var(--transition-smooth);
}

.share-btn:hover {
    border-color: var(--color-black);
    background-color: var(--color-gray-50);
}

/* Central Article Reader content area */
.article-body-wrapper {
    grid-column: 2;
    max-width: var(--article-width);
    margin: 0 auto;
}

.article-featured-media {
    width: 100%;
    margin-bottom: var(--space-lg);
    border: 1px solid var(--border-color);
}

.article-featured-media img {
    width: 100%;
    height: auto;
    display: block;
    aspect-ratio: 16/9;
    object-fit: cover;
}

.article-body-content {
    font-size: 1.15rem;
    line-height: 1.8;
    color: var(--text-primary);
}

.article-body-content p {
    font-size: 1.15rem;
    margin-bottom: var(--space-md);
    color: var(--color-gray-900);
}

.article-body-content h2, .article-body-content h3 {
    margin-top: var(--space-lg);
    margin-bottom: var(--space-sm);
    scroll-margin-top: 100px;
}

.article-body-content h2 {
    font-size: 1.6rem;
}

.article-body-content blockquote {
    border-left: 4px solid var(--color-black);
    padding-left: var(--space-md);
    margin: var(--space-md) 0;
    font-style: italic;
    color: var(--text-secondary);
}

.article-body-content ul, .article-body-content ol {
    margin-left: var(--space-md);
    margin-bottom: var(--space-md);
}

.article-body-content li {
    margin-bottom: 6px;
    color: var(--color-gray-900);
}

.article-tags {
    margin-top: var(--space-lg);
    padding-top: var(--space-md);
    border-top: 1px solid var(--border-color);
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
}

.article-tag {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    padding: 0.25rem 0.6rem;
    background-color: var(--color-gray-50);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
}

/* Related articles section */
.section-related {
    padding: var(--space-xl) 0;
    border-top: 1px solid var(--border-color);
    background-color: var(--color-gray-50);
}

/* --- Search System Overlay UI --- */
.search-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.98);
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-smooth);
    display: flex;
    justify-content: center;
    padding-top: 10vh;
}

.search-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.search-container {
    width: 100%;
    max-width: var(--article-width);
    padding: 0 var(--space-md);
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.search-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 2px solid var(--color-black);
    padding-bottom: var(--space-xs);
}

.search-input {
    width: 100%;
    border: none;
    outline: none;
    font-family: var(--font-sans);
    font-size: 2rem;
    font-weight: 700;
    background: transparent;
    letter-spacing: -0.03em;
}

.search-close {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.5rem;
    color: var(--text-primary);
    padding: var(--space-xs);
}

.search-results {
    max-height: 60vh;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    padding-right: var(--space-xs);
}

.search-result-item {
    padding-bottom: var(--space-sm);
    border-bottom: 1px solid var(--border-color);
    transition: transform var(--transition-fast);
}

.search-result-item:hover {
    transform: translateX(4px);
}

.search-result-category {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
}

.search-result-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin: 4px 0;
}

.search-result-excerpt {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* --- Footer Layout --- */
.footer {
    background-color: var(--color-black);
    color: var(--color-white);
    padding: var(--space-xl) 0;
    margin-top: var(--space-xxl);
}

.footer-top {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.footer-brand-desc {
    color: var(--color-gray-400);
    font-size: 0.95rem;
    max-width: 320px;
    margin-top: var(--space-sm);
}

.footer-col-title {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    text-transform: uppercase;
    color: var(--color-gray-400);
    margin-bottom: var(--space-md);
    letter-spacing: 0.05em;
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.footer-link {
    font-size: 0.9rem;
    color: var(--color-gray-300);
    transition: var(--transition-fast);
}

.footer-link:hover {
    color: var(--color-white);
}

.footer-bottom {
    border-top: 1px solid var(--color-gray-800);
    padding-top: var(--space-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-md);
}

.footer-copy {
    font-size: 0.8rem;
    color: var(--color-gray-500);
}

.footer-extra {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--color-gray-500);
}

/* --- Animations & Keyframes --- */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.reveal-element {
    opacity: 0;
    transform: translateY(15px);
    transition: opacity var(--transition-smooth), transform var(--transition-smooth);
}

.reveal-element.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* --- Corporate B2B Form Styles --- */
.contact-form {
    max-width: 600px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

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

.form-group label {
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-primary);
}

.form-control {
    width: 100%;
    padding: var(--space-sm);
    border: 1px solid var(--border-color);
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    transition: var(--transition-fast);
    border-radius: 0;
}

.form-control:focus {
    outline: none;
    border-color: var(--border-focus);
    background-color: var(--bg-primary);
}

textarea.form-control {
    min-height: 120px;
    resize: vertical;
}

/* --- Mobile Experience Media Queries --- */
@media (max-width: 1250px) and (min-width: 769px) {
    .nav-menu {
        gap: 0.75rem;
    }
    .nav-link {
        font-size: 0.78rem;
    }
    .brand-img {
        height: 52px;
        max-height: 52px;
    }
}

@media (max-width: 1024px) {
    .article-layout {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }
    
    .article-sidebar-left {
        grid-column: 1;
        position: static;
        margin-bottom: var(--space-md);
        border-bottom: 1px solid var(--border-color);
        padding-bottom: var(--space-md);
    }
    
    .article-sidebar-right {
        grid-column: 1;
        position: static;
        margin-top: var(--space-md);
        border-top: 1px solid var(--border-color);
        padding-top: var(--space-md);
    }
 
    .share-buttons {
        flex-direction: row;
        flex-wrap: wrap;
    }

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

@media (max-width: 768px) {
    :root {
        --space-xl: 2.5rem;
        --space-xxl: 4rem;
    }

    .navbar {
        padding: var(--space-sm) 0;
    }

    /* Menu Toggle Activation */
    .menu-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 320px;
        height: 100vh;
        background-color: var(--color-white);
        flex-direction: column;
        justify-content: flex-start;
        align-items: flex-start;
        padding: calc(var(--space-xl) + 1.5rem) var(--space-md) var(--space-md) var(--space-md);
        gap: 0.5rem;
        box-shadow: -10px 0 30px rgba(0, 0, 0, 0.05);
        transition: right var(--transition-smooth);
        z-index: 105;
        overflow-y: auto;
    }

    .nav-menu.active {
        right: 0;
    }

    .menu-toggle.active span:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

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

    .menu-toggle.active span:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .brand-img {
        height: 54px;
        max-height: 54px;
    }

    .navbar.scrolled .brand-img {
        height: 43px;
        max-height: 43px;
    }

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

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

    .footer-top {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }
    
    .search-input {
        font-size: 1.5rem;
    }

    /* Hero layout and spacing adjustments on tablets */
    .hero {
        padding: 8rem 0 3.5rem 0;
    }
    
    .hero-title {
        font-size: clamp(2rem, 6vw, 3rem);
    }
    
    .hero-title br {
        display: none;
    }

    .hero div[style*="display:flex"],
    .hero div[style*="display: flex"] {
        flex-direction: column !important;
        width: 100%;
        gap: var(--space-xs) !important;
    }

    .hero .btn {
        width: 100%;
        text-align: center;
    }
}

/* --- Mobile Phone Media Queries (<480px) --- */
@media (max-width: 480px) {
    .brand-img {
        height: 45px;
        max-height: 45px;
    }

    .navbar.scrolled .brand-img {
        height: 36px;
        max-height: 36px;
    }

    .brand-text {
        font-size: 1.1rem;
    }

    .search-overlay {
        padding-top: 6vh;
    }

    .search-input {
        font-size: 1.2rem;
    }

    .footer-brand-desc {
        font-size: 0.85rem;
    }
}