/* 
    Premium Styling for TheBaseOfMathematics
    Color Palette:
    - Primary Web Dark Green: #1a4a47
    - Primary Green light: #256a65
    - Accent Yellow/Gold: #ffd24c
    - White: #ffffff
    - Off-white/Gray: #f8fafc
    - Text Dark: #1e293b
    - Text Light: #64748b
*/

:root {
    --color-primary: #1a4a47;
    --color-primary-light: #256a65;
    --color-primary-dark: #123331;
    --color-accent: #ffd24c;
    --color-accent-hover: #ffc219;
    --color-white: #ffffff;
    --color-background: #f8fafc;
    --color-text-main: #1e293b;
    --color-text-muted: #64748b;
    --color-border: #e2e8f0;
    
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.24);
    --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, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    
    --transition-fast: 0.2s ease;
    --transition-norm: 0.3s ease;
    --transition-slow: 0.5s ease-in-out;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text-main);
    background-color: var(--color-background);
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-text-main);
}

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

ul {
    list-style: none;
}

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

.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 2rem;
}

.text-center {
    text-align: center;
}

/* Typography Utilities */
.subtitle {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.section-header p {
    color: var(--color-text-muted);
    max-width: 600px;
    margin: 0 auto;
    font-size: 1.125rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.625rem 1.25rem;
    border-radius: 6px;
    font-weight: 600;
    font-family: var(--font-body);
    font-size: 0.9375rem;
    cursor: pointer;
    transition: all var(--transition-norm);
    border: 2px solid transparent;
}

.btn-large {
    padding: 0.875rem 1.75rem;
    font-size: 1.0625rem;
    border-radius: 8px;
}

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

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

.btn-outline {
    background-color: transparent;
    border-color: var(--color-border);
    color: var(--color-text-main);
}

.btn-outline:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.btn-outline-white {
    background-color: transparent;
    border-color: var(--color-white);
    color: var(--color-white);
}

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

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

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 1000;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
    transition: padding var(--transition-norm), background-color var(--transition-norm);
    padding: 1rem 0;
}

.navbar.scrolled {
    padding: 0.75rem 0;
    background-color: rgba(255, 255, 255, 1);
    box-shadow: var(--shadow-sm);
}

.nav-container {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 4rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-img {
    height: 55px;
    width: auto;
    object-fit: contain;
    transition: transform var(--transition-norm);
}

.logo:hover .logo-img {
    transform: scale(1.05);
}

.logo-text {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text-main);
    letter-spacing: -0.5px;
    white-space: nowrap;
}

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

.nav-links {
    display: flex;
    gap: 1.5rem;
    align-items: center;
    justify-content: center;
}

.nav-links a {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-text-main);
    position: relative;
    padding: 0.25rem 0;
    letter-spacing: 0.2px;
    white-space: nowrap;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--color-primary);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-primary);
    transition: width var(--transition-norm);
}

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

.nav-actions {
    display: flex;
    gap: 1.25rem;
    align-items: center;
}

.nav-actions .btn {
    padding: 0 1.5rem;
    font-size: 0.9rem;
    height: 46px; /* Uniform height for all header buttons */
    border-radius: 12px;
    letter-spacing: 0.3px;
    gap: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    white-space: nowrap;
    border: 2px solid transparent;
}

.nav-actions .btn-outline {
    border: 2px solid var(--color-border);
    background-color: transparent;
    color: var(--color-text-main);
}

.nav-actions .btn-primary {
    background-color: var(--color-accent);
    color: #123331; /* Better contrast */
    box-shadow: 0 4px 6px rgba(255, 210, 76, 0.2);
}

.nav-actions .btn-primary:hover {
    background-color: var(--color-accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(255, 210, 76, 0.4);
}

.nav-actions .btn-outline:hover {
    background-color: #f8fafc;
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 24px;
    height: 18px;
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: 1001;
}

.menu-toggle span {
    width: 100%;
    height: 2px;
    background-color: var(--color-text-main);
    transition: all 0.3s;
}

/* Slider Section */
.hero-slider {
    position: relative;
    width: 100%;
    height: 55vh;
    min-height: 450px;
    margin-top: 90px; /* Push below fixed taller navbar */
    overflow: hidden;
    background-color: var(--color-primary);
}

.slider-container {
    position: relative;
    width: 100%;
    height: 100%;
}

.slides {
    display: flex;
    width: 100%;
    height: 100%;
    transition: transform 0.8s cubic-bezier(0.645, 0.045, 0.355, 1);
}

.slide {
    position: relative;
    width: 100%;
    height: 100%;
    flex-shrink: 0;
    display: flex;
    align-items: center;
}

.slide-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 1;
}

.slide-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, rgba(18, 51, 49, 0.95) 0%, rgba(18, 51, 49, 0.8) 50%, rgba(26, 74, 71, 0.5) 100%);
    z-index: 2;
}

.slide-content {
    position: relative;
    z-index: 3;
    color: var(--color-white);
    max-width: 800px;
    margin: 0;
    padding-left: 5%;
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
    transition-delay: 0.3s;
}

/* Active Slide Animations */
.slide.active .slide-content {
    opacity: 1;
    transform: translateY(0);
}

.slide.active .slide-bg {
    animation: zoomIn 10s infinite alternate linear;
}

@keyframes zoomIn {
    0% { transform: scale(1); }
    100% { transform: scale(1.1); }
}

.badge {
    display: inline-block;
    padding: 0.35rem 1rem;
    background-color: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 30px;
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 1.5rem;
    backdrop-filter: blur(4px);
}

.slide-content h1 {
    font-size: 2.75rem;
    color: var(--color-white);
    margin-bottom: 1rem;
    text-shadow: 0 4px 8px rgba(0,0,0,0.6); /* Sharper, darker text shadow */
}

.slide-content p {
    font-size: 1.125rem;
    margin-bottom: 1.5rem;
    opacity: 0.95;
    max-width: 600px;
    text-shadow: 0 2px 4px rgba(0,0,0,0.6);
}

.slide-btns {
    display: flex;
    gap: 1rem;
}

/* Slider Controls */
.slider-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    background-color: rgba(255, 255, 255, 0.1);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 10;
    transition: all var(--transition-norm);
    backdrop-filter: blur(4px);
}

.slider-btn:hover {
    background-color: var(--color-accent);
    color: var(--color-primary-dark);
    border-color: var(--color-accent);
}

.prev-btn {
    left: 2rem;
}

.next-btn {
    right: 2rem;
}

.slider-dots {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 0.75rem;
    z-index: 10;
}

.dot {
    width: 12px;
    height: 12px;
    background-color: rgba(255, 255, 255, 0.3);
    border: 2px solid transparent;
    border-radius: 50%;
    cursor: pointer;
    transition: all var(--transition-norm);
}

.dot:hover {
    background-color: rgba(255, 255, 255, 0.6);
}

.dot.active {
    background-color: transparent;
    border-color: var(--color-accent);
    transform: scale(1.2);
}

/* Features Section */
.features-section {
    padding: 3rem 0;
    background-color: var(--color-background);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2.5rem;
}

.feature-card {
    background: var(--color-white);
    padding: 2.5rem 2rem;
    border-radius: 16px;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-norm);
    border: 1px solid var(--color-border);
}

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

.icon-box {
    width: 60px;
    height: 60px;
    background-color: rgba(37, 106, 101, 0.1);
    color: var(--color-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.feature-card p {
    color: var(--color-text-muted);
}

/* CTA Section */
.cta-section {
    background-color: var(--color-primary);
    background-image: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
    padding: 4rem 0;
    text-align: center;
    color: var(--color-white);
}

.cta-content {
    max-width: 800px;
    margin: 0 auto;
}

.cta-content h2 {
    color: var(--color-white);
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.cta-content p {
    font-size: 1.125rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

/* Footer */
.footer {
    background-color: #0f172a;
    color: #cbd5e1;
    padding-top: 5rem;
}

.footer-container {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-logo .logo-img {
    height: 70px;
}

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

.footer-about p {
    margin: 1.5rem 0;
    font-size: 0.9375rem;
    opacity: 0.8;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: rgba(255,255,255,0.05);
    border-radius: 50%;
    color: var(--color-white);
}

.social-links a:hover {
    background-color: var(--color-accent);
    color: var(--color-primary-dark);
}

.footer-links h3, .footer-newsletter h3 {
    color: var(--color-white);
    font-size: 1.125rem;
    margin-bottom: 1.5rem;
}

.footer-links ul li {
    margin-bottom: 0.75rem;
}

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

.footer-newsletter p {
    font-size: 0.9375rem;
    margin-bottom: 1rem;
    opacity: 0.8;
}

.newsletter-form {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.newsletter-form input {
    padding: 0.75rem 1rem;
    border-radius: 6px;
    border: 1px solid rgba(255,255,255,0.1);
    background-color: rgba(255,255,255,0.05);
    color: white;
    font-family: inherit;
    outline: none;
}

.newsletter-form input:focus {
    border-color: var(--color-primary-light);
}

.footer-bottom {
    background-color: #020617;
    padding: 1.5rem 0;
    text-align: center;
    font-size: 0.875rem;
    opacity: 0.7;
}

/* Utility Classes */
.bg-light { background-color: var(--color-background); }
.bg-dark { background-color: var(--color-primary-dark); }
.text-white { color: var(--color-white) !important; }
.text-accent { color: var(--color-accent) !important; }

/* Courses Section */
.courses-section { padding: 2.5rem 0; }
.toppers-section { padding: 3rem 0; }
.course-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 2rem; margin-top: 2rem; }
.course-card { background: var(--color-white); border-radius: 16px; overflow: hidden; box-shadow: var(--shadow-sm); transition: transform var(--transition-norm); border: 1px solid var(--color-border); display: flex; flex-direction: column; }
.course-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); border-color: transparent;}
.course-img { position: relative; height: 220px; width: 100%; }
.course-img img { width: 100%; height: 100%; object-fit: cover; }
.course-badge { position: absolute; top: 1rem; right: 1rem; padding: 0.35rem 0.75rem; border-radius: 20px; font-weight: 700; font-size: 0.8rem; letter-spacing: 0.5px; z-index: 2; box-shadow: 0 2px 5px rgba(0,0,0,0.2); }
.course-badge.free { background-color: #10b981; color: white; border: none; }
.course-badge.paid { background-color: var(--color-accent); color: var(--color-primary-dark); border: none; }
.course-info { padding: 1.5rem; flex-grow: 1; display: flex; flex-direction: column; }
.course-info h3 { font-size: 1.25rem; margin-bottom: 0.5rem; }
.course-info p { color: var(--color-text-muted); font-size: 0.95rem; margin-bottom: 1.25rem; flex-grow: 1; }
.course-meta { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1rem; padding-bottom: 1rem; border-bottom: 1px solid var(--color-border); color: #64748b; font-size: 0.85rem; }
.course-meta span { display: flex; align-items: center; gap: 0.5rem; }
.course-price { font-size: 1.4rem; font-weight: 700; color: var(--color-primary); margin-bottom: 1rem; display: flex; align-items: center; gap: 0.5rem; }
.course-price span { font-size: 0.95rem; color: #94a3b8; text-decoration: line-through; font-weight: 400; }
.btn-block { width: 100%; }

/* Demo Section */
.demo-section { padding: 4rem 0; }
.demo-wrap { display: flex; align-items: center; gap: 4rem; flex-wrap: wrap; }
.demo-content { flex: 1; min-width: 300px; }
.demo-content h2 { margin-bottom: 1rem; font-size: 2.25rem; }
.demo-content p { color: #cbd5e1; font-size: 1.125rem; margin-bottom: 2rem; }
.demo-features { list-style: none; margin-bottom: 2rem; }
.demo-features li { display: flex; align-items: center; gap: 1rem; margin-bottom: 1rem; color: var(--color-white); font-size: 1.05rem; }
.demo-video { flex: 1; min-width: 300px; position: relative; border-radius: 20px; overflow: hidden; box-shadow: 0 20px 40px rgba(0,0,0,0.4); border: 4px solid rgba(255,255,255,0.1); cursor: pointer; }
.demo-video img { width: 100%; display: block; filter: brightness(0.8); transition: filter 0.3s; }
.demo-video:hover img { filter: brightness(0.6); }
.play-btn { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); width: 80px; height: 80px; background-color: var(--color-accent); color: var(--color-primary-dark); border-radius: 50%; display: flex; align-items: center; justify-content: center; transition: all 0.3s; box-shadow: 0 10px 20px rgba(0,0,0,0.3); }
.demo-video:hover .play-btn { transform: translate(-50%, -50%) scale(1.1); background-color: var(--color-accent-hover); }

/* Toppers Section */
.toppers-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 2rem; margin-top: 2.5rem; }
.topper-card { background: var(--color-white); padding: 2.5rem 2rem; border-radius: 16px; text-align: center; box-shadow: var(--shadow-sm); transition: all 0.3s; border: 1px solid var(--color-border); }
.topper-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); border-color: transparent;}
.avatar-circle { width: 80px; height: 80px; border-radius: 50%; background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light)); color: white; display: flex; align-items: center; justify-content: center; font-size: 2rem; font-weight: 700; font-family: var(--font-heading); margin: 0 auto 1.25rem; box-shadow: 0 8px 16px rgba(0,0,0,0.1); }
.topper-card h3 { font-size: 1.25rem; margin-bottom: 0.25rem; color: var(--color-text-main); }
.topper-card .rank { color: var(--color-white); font-weight: 600; margin-bottom: 1rem; font-size: 0.85rem; background: var(--color-primary-dark); padding: 0.35rem 1rem; border-radius: 20px; display: inline-block; letter-spacing: 0.5px;}
.topper-card p { color: var(--color-text-muted); font-style: italic; font-size: 1rem; line-height: 1.6;}

/* Page Header styles */
.page-header { position: relative; width: 100%; height: 380px; background-size: cover; background-position: center; display: flex; flex-direction: column; align-items: center; justify-content: center; margin-top: 90px; border-bottom: 4px solid var(--color-accent); }
.page-header-overlay { position: absolute; inset: 0; background: linear-gradient(135deg, rgba(18,51,49,0.95) 0%, rgba(26,74,71,0.8) 100%); z-index: 1; }
.page-header-content { position: relative; z-index: 2; color: white; text-align: center; max-width: 800px; padding: 0 2rem; }
.breadcrumb { display: flex; align-items: center; justify-content: center; font-size: 0.95rem; color: var(--color-accent); margin-bottom: 1.5rem; font-weight: 600; letter-spacing: 1.5px; text-transform: uppercase; }
.breadcrumb span { color: rgba(255,255,255,0.4); margin: 0 0.75rem; font-weight: 400; }
.breadcrumb a { color: rgba(255,255,255,0.9); }
.breadcrumb a:hover { color: var(--color-white); text-decoration: underline; }
.page-header-content h1 { font-size: 4rem; color: var(--color-accent); margin-bottom: 1rem; text-shadow: 0 4px 12px rgba(0,0,0,0.6); line-height: 1.1; }
.page-header-content p { font-size: 1.25rem; opacity: 0.95; text-shadow: 0 2px 4px rgba(0,0,0,0.3); }

/* All Courses Section Filter */
.all-courses-section { padding: 4rem 0 6rem 0; }
.course-filters { display: flex; justify-content: space-between; align-items: center; background: white; padding: 1rem 1.5rem; border-radius: 12px; box-shadow: var(--shadow-sm); margin-bottom: 3rem; flex-wrap: wrap; gap: 1rem; border: 1px solid var(--color-border); }
.search-bar { display: flex; align-items: center; flex: 1; min-width: 250px; gap: 0.75rem; color: var(--color-text-muted); }
.search-bar input { border: none; outline: none; flex: 1; font-family: inherit; font-size: 1.05rem; padding: 0.5rem 0; color: var(--color-text-main); }
.search-bar input::placeholder { color: #cbd5e1; }
.filter-dropdowns { display: flex; gap: 1rem; flex-wrap: wrap; }
.filter-dropdowns select { padding: 0.75rem 1rem; border: 1px solid var(--color-border); border-radius: 8px; font-family: inherit; font-size: 0.95rem; outline: none; background: white; cursor: pointer; color: var(--color-text-main); box-shadow: 0 1px 2px rgba(0,0,0,0.05); transition: all 0.2s;}
.filter-dropdowns select:hover { border-color: #94a3b8; }
.filter-dropdowns select:focus { border-color: var(--color-primary-light); outline: 2px solid rgba(37,106,101,0.2); }

/* Live Section */
.live-schedule-section { padding: 4rem 0 6rem 0; }
.schedule-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 3rem; flex-wrap: wrap; gap: 1.5rem; }
.schedule-header h2 { font-size: 2.25rem; color: var(--color-text-main); }
.date-selector { display: flex; gap: 0.5rem; flex-wrap: wrap; }

.schedule-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); gap: 2rem; }
.live-card { background: white; border-radius: 16px; box-shadow: var(--shadow-sm); border: 1px solid var(--color-border); overflow: hidden; display: flex; flex-direction: column; transition: all 0.3s; }
.live-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--color-primary-light); }

.live-card.active-live { border-color: #ef4444; box-shadow: 0 4px 12px rgba(239, 68, 68, 0.15); }
.live-status { background: #fee2e2; color: #b91c1c; padding: 0.5rem 1.5rem; font-weight: 700; font-size: 0.85rem; display: flex; align-items: center; gap: 0.5rem; letter-spacing: 1px; }
.live-status.upcoming { background: #f1f5f9; color: var(--color-text-muted); }
.pulse-dot { width: 8px; height: 8px; background-color: #ef4444; border-radius: 50%; box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.7); animation: pulse 1.5s infinite; }

@keyframes pulse {
    0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.7); }
    70% { transform: scale(1); box-shadow: 0 0 0 10px rgba(239, 68, 68, 0); }
    100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(239, 68, 68, 0); }
}

.live-card-body { padding: 1.5rem; flex-grow: 1; border-bottom: 1px solid var(--color-border); }
.live-time { color: var(--color-primary); font-weight: 600; margin-bottom: 0.5rem; font-size: 1.1rem; }
.live-card-body h3 { font-size: 1.35rem; margin-bottom: 0.75rem; color: var(--color-text-main); line-height: 1.3; }
.live-card-body p { color: var(--color-text-muted); margin-bottom: 1rem; font-size: 0.95rem; }
.live-tags { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.live-tags span { background: var(--color-background); padding: 0.25rem 0.75rem; border-radius: 20px; font-size: 0.75rem; font-weight: 600; color: var(--color-text-muted); border: 1px solid var(--color-border); }

.live-card-footer { padding: 1rem 1.5rem; display: flex; justify-content: space-between; align-items: center; background: #f8fafc; }
.viewers { display: flex; align-items: center; gap: 0.5rem; font-size: 0.9rem; color: var(--color-text-muted); font-weight: 600; }

/* Test Section */
.test-section { padding: 4rem 0 6rem 0; }
.test-categories { display: flex; gap: 1rem; margin-bottom: 3rem; overflow-x: auto; padding-bottom: 0.5rem; scrollbar-width: none; }
.test-categories::-webkit-scrollbar { display: none; }
.test-cat-btn { padding: 0.75rem 1.5rem; background: white; border: 1px solid var(--color-border); border-radius: 30px; font-weight: 600; color: var(--color-text-muted); cursor: pointer; white-space: nowrap; transition: all 0.2s ease; }
.test-cat-btn:hover { border-color: var(--color-primary); color: var(--color-primary); }
.test-cat-btn.active { background: var(--color-primary); color: white; border-color: var(--color-primary); box-shadow: 0 4px 10px rgba(26, 74, 71, 0.2); }

.test-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 2rem; }
.test-card { background: white; border-radius: 16px; border: 1px solid var(--color-border); box-shadow: var(--shadow-sm); transition: transform 0.3s, box-shadow 0.3s; overflow: hidden; display: flex; flex-direction: column; }
.test-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); border-color: var(--color-accent); }
.test-card-header { padding: 1.5rem 1.5rem 1rem; border-bottom: 1px dashed var(--color-border); }
.test-badge { display: inline-block; padding: 0.25rem 0.75rem; border-radius: 4px; font-size: 0.75rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 1rem; }
.test-badge.free { background: #dcfce7; color: #166534; }
.test-badge.pro { background: #fef9c3; color: #854d0e; }
.test-card-header h3 { font-size: 1.25rem; color: var(--color-text-main); margin-bottom: 0.5rem; line-height: 1.3; }
.test-card-header p { color: var(--color-text-muted); font-size: 0.95rem; margin-bottom: 0; display: -webkit-box; -webkit-line-clamp: 2; line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

.test-card-meta { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 0.5rem; padding: 1.5rem; flex-grow: 1; }
.meta-item { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 0.5rem; font-size: 0.9rem; color: var(--color-text-main); font-weight: 600; text-align: center; }
.meta-item svg { color: var(--color-text-muted); margin-bottom: 0.25rem; }

.test-card-footer { padding: 1.25rem 1.5rem; background: #f8fafc; border-top: 1px solid var(--color-border); }
.test-card-footer .btn-primary:hover { background: var(--color-primary-dark) !important; color: white !important; }

/* Responsive Design */
@media (max-width: 1200px) {
    .nav-links { gap: 1rem; }
    .nav-actions { gap: 0.5rem; }
    .nav-links a { font-size: 0.9rem; }
}

@media (max-width: 1050px) {
    .nav-container {
        display: flex;
        justify-content: space-between;
        align-items: center;
        width: 100%;
    }

    .nav-links, .nav-actions {
        display: none;
        position: fixed;
        left: 0;
        width: 100%;
        background: var(--color-white);
        z-index: 998;
        padding: 1.5rem 0;
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: 1.25rem;
    }

    .nav-links {
        top: 80px;
    }

    .nav-actions {
        top: 350px; /* Overlap will be handled by flow but for now fixed */
        border-top: 1px solid var(--color-border);
        padding-top: 1.5rem;
        padding-bottom: 2rem;
        box-shadow: 0 15px 25px rgba(0,0,0,0.1);
    }

    .nav-links.active, .nav-actions.active {
        display: flex;
    }

    .nav-links a {
        font-size: 1.1rem;
        width: 100%;
        padding: 0.5rem 0;
    }

    .nav-actions .btn {
        width: 85%;
        max-width: 320px;
    }

    .menu-toggle {
        display: flex;
    }

    .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); }
}

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

@media (max-width: 1024px) {
    .slide-content h1 {
        font-size: 3rem;
    }
    .footer-container {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .slide-content {
        padding-left: 0;
        text-align: center;
        margin: 0 auto;
    }
    
    .slide-overlay {
        background: rgba(18, 51, 49, 0.85); /* Darker robust overlay for centered text */
    }
    
    .slide-content h1 {
        font-size: 2.25rem;
    }
    
    .slide-btns {
        justify-content: center;
        flex-direction: column;
        align-items: center;
        gap: 0.75rem;
    }
    
    .slide-btns .btn {
        width: 100%;
        max-width: 280px;
    }
    
    .prev-btn, .next-btn {
        display: none; /* Hide arrows on mobile, use dots/swipe */
    }
    
    .footer-container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .logo-img {
        height: 48px;
    }
}