/* Custom CSS Variables & Tokens */
:root {
    --bg-dark: #0a0f1d;
    --bg-surface: #111827;
    --bg-surface-glass: rgba(17, 24, 39, 0.75);
    --border-color: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(59, 130, 246, 0.4);
    
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    
    --color-primary: #3b82f6; /* Electric Blue */
    --color-primary-hover: #2563eb;
    --color-accent: #f59e0b; /* Amber/Gold */
    --color-accent-hover: #d97706;
    --color-success: #10b981;
    --color-danger: #ef4444;
    
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-glow: 0 0 15px rgba(59, 130, 246, 0.25);
    
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

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

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

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

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}
::-webkit-scrollbar-track {
    background: var(--bg-dark);
}
::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.15);
    border-radius: 5px;
}
::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* Layout Utilities */
.content-container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
}

.max-width-md {
    max-width: 800px;
}

/* Typography styling */
h1, h2, h3, h4 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.25;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

p {
    margin-bottom: 1.2rem;
    color: var(--text-secondary);
    font-size: 1rem;
}

/* Cards Design System */
.card {
    background-color: var(--bg-surface-glass);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 2rem;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
}

.card:hover {
    border-color: var(--border-hover);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

/* Button UI Components */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-family: var(--font-heading);
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    transition: var(--transition-normal);
    font-size: 0.95rem;
}

.btn-primary {
    background-color: var(--color-primary);
    color: #fff;
    box-shadow: 0 4px 14px rgba(59, 130, 246, 0.4);
}

.btn-primary:hover {
    background-color: var(--color-primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.6);
}

.btn-secondary {
    background-color: rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.3);
}

.btn-gold {
    background-color: var(--color-accent);
    color: var(--bg-dark);
    box-shadow: 0 4px 14px rgba(245, 158, 11, 0.4);
}

.btn-gold:hover {
    background-color: var(--color-accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(245, 158, 11, 0.6);
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

.btn-block {
    display: flex;
    width: 100%;
}

/* Header & Navigation Styling */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: rgba(10, 15, 29, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition-normal);
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.5rem;
    gap: 1.5rem;
}

.logo-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-primary);
    font-weight: 800;
}

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

.brand-logo {
    height: 40px;
    width: auto;
    object-fit: contain;
}

.brand-name {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    letter-spacing: -0.5px;
    background: linear-gradient(135deg, #fff, var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.desktop-nav {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.nav-item {
    font-family: var(--font-heading);
    font-weight: 500;
    color: var(--text-secondary);
    padding: 0.5rem 0.25rem;
    position: relative;
}

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

.nav-item.active {
    color: var(--color-accent);
    font-weight: 600;
}

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

.nav-item:hover {
    color: var(--text-primary);
}

/* Search Bar System */
.search-container {
    position: relative;
    max-width: 280px;
    width: 100%;
}

.search-box {
    position: relative;
    display: flex;
    align-items: center;
}

.search-box input {
    width: 100%;
    background-color: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    padding: 0.6rem 2.5rem 0.6rem 2.5rem;
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 0.9rem;
    transition: var(--transition-normal);
}

.search-box input:focus {
    outline: none;
    border-color: var(--color-primary);
    background-color: rgba(255, 255, 255, 0.1);
    box-shadow: 0 0 10px rgba(59, 130, 246, 0.2);
}

.search-icon {
    position: absolute;
    left: 1rem;
    color: var(--text-muted);
    font-size: 0.9rem;
    pointer-events: none;
}

.clear-search-btn {
    position: absolute;
    right: 1rem;
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
}

.clear-search-btn:hover {
    color: var(--text-primary);
}

/* Dynamic Search Results Dropdown */
.search-results-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    width: 320px;
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    max-height: 350px;
    overflow-y: auto;
    z-index: 110;
    padding: 0.5rem;
    animation: fadeIn var(--transition-fast) forwards;
}

.search-result-item {
    display: block;
    padding: 0.75rem;
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

.search-result-item:last-child {
    border-bottom: none;
}

.search-result-item:hover {
    background-color: rgba(255, 255, 255, 0.05);
}

.search-result-title {
    display: block;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 0.15rem;
}

.search-result-meta {
    font-size: 0.75rem;
    color: var(--color-accent);
}

.search-no-results {
    padding: 1rem;
    color: var(--text-muted);
    text-align: center;
    font-size: 0.9rem;
}

/* Mobile Hamburger button */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
}

/* Mobile Nav Drawer */
.mobile-drawer-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.6);
    z-index: 140;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-normal);
}

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

.mobile-drawer {
    position: fixed;
    top: 0;
    right: -300px;
    width: 300px;
    height: 100vh;
    background-color: var(--bg-surface);
    border-left: 1px solid var(--border-color);
    z-index: 150;
    display: flex;
    flex-direction: column;
    padding: 1.5rem;
    transition: right var(--transition-normal);
    box-shadow: var(--shadow-lg);
}

.mobile-drawer.active {
    right: 0;
}

.drawer-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.drawer-brand {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.5rem;
    color: var(--text-primary);
}

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

.mobile-nav {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.mobile-nav-item {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 500;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem;
    border-radius: var(--radius-sm);
}

.mobile-nav-item:hover,
.mobile-nav-item.active {
    color: var(--color-accent);
    background-color: rgba(255, 255, 255, 0.04);
}

.drawer-footer {
    margin-top: auto;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.8rem;
}

/* Page Section Switching Router */
.page-section {
    display: none;
}

.page-section.active-section {
    display: block;
    animation: fadeIn var(--transition-normal) forwards;
}

/* Hero Banner Homepage */
.hero-banner {
    position: relative;
    padding: 8rem 2rem;
    background: linear-gradient(135deg, #091e3a 0%, #2f80ed 100%);
    background-size: cover;
    background-position: center;
    border-bottom: 1px solid var(--border-color);
    text-align: center;
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(10, 15, 29, 0.8);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background-color: rgba(59, 130, 246, 0.2);
    border: 1px solid rgba(59, 130, 246, 0.4);
    color: var(--color-primary);
    padding: 0.4rem 1rem;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    font-family: var(--font-heading);
}

.hero-title {
    font-size: 3rem;
    line-height: 1.15;
    background: linear-gradient(135deg, #fff 40%, var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 1.5rem;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

/* Page Banner Headers */
.page-header-banner {
    position: relative;
    padding: 4rem 2rem;
    border-bottom: 1px solid var(--border-color);
    text-align: center;
}

.secondary-banner { background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 100%); }
.tertiary-banner { background: linear-gradient(135deg, #020617 0%, #111827 100%); }
.materials-banner { background: linear-gradient(135deg, #1e1b4b 0%, #311042 100%); }
.about-banner { background: linear-gradient(135deg, #042f2e 0%, #064e3b 100%); }
.contact-banner { background: linear-gradient(135deg, #3c0712 0%, #580f1d 100%); }

.banner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(10, 15, 29, 0.65);
    z-index: 1;
}

.banner-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    margin: 0 auto;
}

.banner-content h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.banner-content p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 0;
}

/* Homepage Welcome Grid & Video */
.welcome-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

.welcome-video-card {
    display: flex;
    flex-direction: column;
}

.video-wrapper {
    position: relative;
    padding-bottom: 56.25%; /* 16:9 Aspect Ratio */
    height: 0;
    overflow: hidden;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    margin-bottom: 1rem;
}

.video-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.video-caption {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-style: italic;
    margin-bottom: 0;
}

/* Ad strips */
.advertisement-strip {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    background: linear-gradient(90deg, rgba(245, 158, 11, 0.05) 0%, rgba(17, 24, 39, 0.8) 100%);
    border: 1px solid rgba(245, 158, 11, 0.15);
    margin-bottom: 2.5rem;
    position: relative;
}

.advertisement-strip:hover {
    border-color: rgba(245, 158, 11, 0.3);
}

.ad-badge {
    position: absolute;
    top: 0;
    right: 1.5rem;
    background-color: var(--color-accent);
    color: var(--bg-dark);
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    padding: 0.15rem 0.5rem;
    border-radius: 0 0 4px 4px;
    font-family: var(--font-heading);
}

.ad-icon {
    font-size: 2.5rem;
    color: var(--color-accent);
    flex-shrink: 0;
}

.ad-content {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    width: 100%;
}

.ad-content h4 {
    margin-bottom: 0.25rem;
    font-size: 1.1rem;
}

.ad-content p {
    margin-bottom: 0;
    font-size: 0.9rem;
    max-width: 700px;
}

/* Section Header Utilities */
.section-header-compact {
    border-left: 3px solid var(--color-accent);
    padding-left: 1rem;
    margin-bottom: 1.5rem;
}

.section-header-compact h2 {
    font-size: 1.75rem;
    margin-bottom: 0.15rem;
}

.section-header-compact p {
    margin-bottom: 0;
    color: var(--text-muted);
}

/* Facts Grid system */
.facts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

.fact-card {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    height: 100%;
}

.fact-body {
    font-size: 1.05rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 0;
}

/* Homepage Category Feature Cards */
.homepage-features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.feature-column {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.feature-icon-wrapper {
    height: 50px;
    width: 50px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 1.25rem;
}

.secondary-bg { background-color: rgba(59, 130, 246, 0.15); color: var(--color-primary); }
.tertiary-bg { background-color: rgba(243, 244, 246, 0.1); color: var(--text-primary); }
.materials-bg { background-color: rgba(245, 158, 11, 0.15); color: var(--color-accent); }

.feature-column h3 {
    font-size: 1.35rem;
    margin-bottom: 0.75rem;
}

.feature-column p {
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.learn-more-link {
    font-family: var(--font-heading);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-primary);
}

.learn-more-link:hover {
    color: var(--color-accent);
}

.learn-more-link i {
    transition: transform var(--transition-fast);
}

.learn-more-link:hover i {
    transform: translateX(4px);
}

/* Page Layout with Sidebar */
.layout-with-sidebar {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 2rem;
    align-items: start;
}

.section-intro {
    margin-bottom: 2rem;
}

.section-intro p {
    font-size: 1.1rem;
    margin-bottom: 1rem;
}

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

.middle-video-row {
    margin-bottom: 2rem;
}

.video-grid-2 {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 2rem;
    align-items: center;
}

.video-grid-text h3 {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
}

.video-grid-text p {
    margin-bottom: 0;
    font-size: 0.95rem;
}

.video-grid-iframe .video-wrapper {
    margin-bottom: 0;
}

/* Article Cards Grid */
.articles-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.article-card {
    display: flex;
    flex-direction: column;
    overflow: hidden;
    padding: 0; /* Let image span edge */
    height: 100%;
}

.article-img-wrapper {
    position: relative;
    width: 100%;
    height: 180px;
    overflow: hidden;
    border-bottom: 1px solid var(--border-color);
}

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

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

.article-body {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.article-meta {
    font-size: 0.75rem;
    color: var(--color-accent);
    font-weight: 600;
    text-transform: uppercase;
    margin-bottom: 0.5rem;
    letter-spacing: 0.5px;
}

.article-title {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    line-height: 1.3;
}

.article-snippet {
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.article-readmore {
    font-family: var(--font-heading);
    font-weight: 600;
    color: var(--color-primary);
    cursor: pointer;
    align-self: flex-start;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}

.article-readmore i {
    transition: transform var(--transition-fast);
}

.article-card:hover .article-readmore i {
    transform: translateX(4px);
}

/* Sidebar Styling */
.sidebar {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    position: sticky;
    top: 90px;
}

.sidebar-ad-card {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.02) 0%, rgba(17, 24, 39, 0.9) 100%);
    border: 1px solid var(--border-color);
    position: relative;
    display: flex;
    flex-direction: column;
}

.ad-label {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    font-size: 0.6rem;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
}

.sidebar-ad-card h4 {
    font-size: 1.15rem;
    margin-bottom: 0.5rem;
}

.sidebar-ad-card p {
    font-size: 0.85rem;
    margin-bottom: 1rem;
}

.sidebar-ad-image {
    width: 100%;
    height: 140px;
    object-fit: cover;
    border-radius: var(--radius-sm);
    margin-bottom: 1rem;
    border: 1px solid var(--border-color);
}

.sidebar-widget-card h4 {
    font-size: 1.1rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.5rem;
    margin-bottom: 1rem;
}

.widget-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.widget-list li a {
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
}

.widget-list li a:hover {
    color: var(--color-accent);
}

.widget-list li a i {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Materials Guide Styling */
.materials-header h2 {
    font-size: 2rem;
}

.comparison-table-wrapper h3 {
    font-size: 1.4rem;
    margin-bottom: 0.25rem;
}

.table-subtext {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

.table-responsive {
    width: 100%;
    overflow-x: auto;
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 0.95rem;
}

.comparison-table th, 
.comparison-table td {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.comparison-table th {
    font-family: var(--font-heading);
    font-weight: 600;
    color: var(--text-primary);
    background-color: rgba(255, 255, 255, 0.03);
}

.comparison-table tbody tr {
    cursor: pointer;
    transition: var(--transition-fast);
}

.comparison-table tbody tr:hover {
    background-color: rgba(59, 130, 246, 0.05);
}

.comparison-table tbody tr td:first-child {
    font-weight: 600;
    color: var(--color-accent);
}

/* About Page styling */
.about-card {
    text-align: center;
    padding: 3rem;
}

.about-brand-area {
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 2rem;
}

.about-logo {
    height: 120px;
    width: auto;
    margin: 0 auto 1.5rem auto;
}

.about-brand-area h2 {
    font-size: 2.25rem;
    margin-bottom: 0.25rem;
}

.about-brand-area .tagline {
    font-size: 1.1rem;
    color: var(--text-secondary);
}

.about-content-body {
    text-align: left;
    max-width: 650px;
    margin: 0 auto;
}

.about-content-body p {
    font-size: 1.05rem;
    margin-bottom: 1.5rem;
}

/* Contact Page Form styling */
.contact-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 2rem;
    align-items: start;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1.25rem;
}

.form-group label {
    font-family: var(--font-heading);
    font-weight: 500;
    font-size: 0.9rem;
    color: var(--text-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
    background-color: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 0.75rem 1rem;
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 0.95rem;
    transition: var(--transition-normal);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    background-color: rgba(255, 255, 255, 0.08);
    box-shadow: 0 0 12px rgba(59, 130, 246, 0.25);
}

.error-msg {
    font-size: 0.8rem;
    color: var(--color-danger);
    display: none;
}

.form-group.invalid input,
.form-group.invalid select,
.form-group.invalid textarea {
    border-color: var(--color-danger);
    background-color: rgba(239, 68, 68, 0.03);
}

.form-group.invalid .error-msg {
    display: block;
}

.success-banner {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    background-color: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
    border-radius: var(--radius-sm);
    padding: 1.25rem;
    margin-top: 1.5rem;
    animation: fadeIn var(--transition-normal) forwards;
}

.success-icon {
    font-size: 1.5rem;
    color: var(--color-success);
    flex-shrink: 0;
}

.success-banner h4 {
    color: var(--color-success);
    margin-bottom: 0.25rem;
    font-size: 1.05rem;
}

.success-banner p {
    margin-bottom: 0;
    font-size: 0.9rem;
}

/* Email newsletter subscription */
.subscription-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    background: linear-gradient(180deg, rgba(245, 158, 11, 0.02) 0%, rgba(17, 24, 39, 0.9) 100%);
    border: 1px solid rgba(245, 158, 11, 0.1);
}

.subscription-icon-wrapper {
    height: 60px;
    width: 60px;
    border-radius: 50%;
    background-color: rgba(245, 158, 11, 0.15);
    color: var(--color-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
}

.form-group-row {
    display: flex;
    width: 100%;
    gap: 0.5rem;
    margin-top: 1.25rem;
    margin-bottom: 0.5rem;
}

.form-group-row input {
    flex-grow: 1;
    background-color: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 0.75rem 1rem;
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 0.95rem;
    transition: var(--transition-normal);
}

.form-group-row input:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 12px rgba(245, 158, 11, 0.25);
}

#subscribe-form.invalid input {
    border-color: var(--color-danger);
}

#subscribe-form .error-msg {
    margin-top: 0.25rem;
    text-align: left;
    width: 100%;
}

/* Full Screen Article Detail Modal */
.article-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    animation: fadeIn var(--transition-fast) forwards;
}

.modal-container {
    width: 100%;
    max-width: 800px;
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    height: 90vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: relative;
    box-shadow: var(--shadow-lg);
    animation: slideIn var(--transition-normal) forwards;
}

.modal-close {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background-color: rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    height: 40px;
    width: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    cursor: pointer;
    z-index: 10;
    transition: var(--transition-fast);
}

.modal-close:hover {
    background-color: var(--color-danger);
    transform: scale(1.05);
}

.modal-scroll-area {
    flex-grow: 1;
    overflow-y: auto;
}

.modal-hero {
    position: relative;
    width: 100%;
    height: 300px;
    display: flex;
    align-items: flex-end;
    border-bottom: 1px solid var(--border-color);
}

.modal-banner-img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.modal-hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, rgba(10, 15, 29, 0) 30%, rgba(10, 15, 29, 0.95) 100%);
    z-index: 1;
}

.modal-hero-content {
    position: relative;
    z-index: 2;
    padding: 2rem;
    width: 100%;
}

.modal-category-badge {
    display: inline-block;
    background-color: var(--color-accent);
    color: var(--bg-dark);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    margin-bottom: 0.75rem;
    font-family: var(--font-heading);
}

.modal-title {
    font-size: 2.25rem;
    line-height: 1.2;
    margin-bottom: 0;
}

.modal-body-content {
    padding: 2.5rem;
}

.modal-text {
    font-size: 1.05rem;
}

.modal-text h4 {
    font-size: 1.35rem;
    margin-top: 2rem;
    margin-bottom: 0.75rem;
    color: var(--color-accent);
    border-left: 2px solid var(--color-accent);
    padding-left: 0.75rem;
}

.modal-text p {
    font-size: 1.05rem;
    margin-bottom: 1.5rem;
}

.modal-text ul {
    margin-bottom: 1.5rem;
    padding-left: 1.5rem;
}

.modal-text ul li {
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

.modal-divider {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: 2rem 0;
}

.modal-footer-controls {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
}

.share-area {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* Site Footer */
.site-footer {
    background-color: #05070a;
    border-top: 1px solid var(--border-color);
    padding: 4rem 2rem 2rem 2rem;
    margin-top: 4rem;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 2rem;
    padding-bottom: 3rem;
    border-bottom: 1px solid var(--border-color);
}

.footer-brand-name {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    background: linear-gradient(135deg, #fff, var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.footer-brand p {
    font-size: 0.9rem;
    margin-top: 0.5rem;
    color: var(--text-muted);
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-links a {
    color: var(--text-secondary);
    font-family: var(--font-heading);
    font-weight: 500;
    font-size: 0.95rem;
}

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

.footer-bottom {
    max-width: 1200px;
    margin: 0 auto;
    padding-top: 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 0.5rem;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.educational-disclaimer {
    font-style: italic;
    color: var(--text-muted);
    font-size: 0.8rem;
    margin-top: 0.25rem;
}

/* CSS Keyframe Animations */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideIn {
    from { transform: translateY(30px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

/* Responsive Grid Media Queries */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .homepage-features-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 1.5rem;
    }
    
    .layout-with-sidebar {
        grid-template-columns: 1fr;
    }
    
    .sidebar {
        position: static;
        width: 100%;
        margin-top: 2rem;
    }
    
    .sidebar-ad-image {
        max-height: 250px;
    }
}

@media (max-width: 768px) {
    .desktop-nav {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .search-container {
        max-width: 180px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .welcome-grid {
        grid-template-columns: 1fr;
    }
    
    .video-grid-2 {
        grid-template-columns: 1fr;
    }
    
    .articles-grid {
        grid-template-columns: 1fr;
    }
    
    .homepage-features-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-container {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: 1.5rem;
    }
    
    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
        gap: 1rem;
    }
    
    .article-modal-overlay {
        padding: 0.5rem;
    }
    
    .modal-container {
        height: 95vh;
        border-radius: var(--radius-md);
    }
    
    .modal-hero {
        height: 200px;
    }
    
    .modal-title {
        font-size: 1.75rem;
    }
    
    .modal-body-content {
        padding: 1.5rem;
    }
    
    .ad-content {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }
    
    .ad-icon {
        font-size: 2rem;
    }
}