/* ===== CSS Variables ===== */
:root {
    /* Colors */
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #8b5cf6;
    --accent: #06b6d4;

    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-light: #94a3b8;

    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-dark: #0f172a;
    --bg-card: #ffffff;

    --border-color: #e2e8f0;
    --border-light: #f1f5f9;

    --success: #10b981;
    --error: #ef4444;
    --warning: #f59e0b;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --gradient-hero: linear-gradient(135deg, #1e293b 0%, #334155 50%, #1e293b 100%);
    --gradient-text: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #06b6d4 100%);

    /* Shadows */
    --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, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.3);

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Space Grotesk', var(--font-primary);

    /* Spacing */
    --section-padding: 100px;
    --container-max: 1200px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;

    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 30px;
    --radius-full: 9999px;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

ul {
    list-style: none;
}

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

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

input,
textarea,
select {
    font-family: inherit;
    font-size: inherit;
}

/* ===== Container ===== */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}

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

.gradient-text {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-badge {
    display: inline-block;
    padding: 8px 16px;
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary);
    font-size: 14px;
    font-weight: 600;
    border-radius: var(--radius-full);
    margin-bottom: 16px;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px;
}

.section-title {
    font-size: clamp(32px, 5vw, 48px);
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    font-size: 15px;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    white-space: nowrap;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-md), 0 4px 14px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), 0 6px 20px rgba(99, 102, 241, 0.5);
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

.btn-outline:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-2px);
}

.btn-lg {
    padding: 16px 32px;
    font-size: 16px;
}

.btn-sm {
    padding: 8px 16px;
    font-size: 14px;
}

.btn-block {
    width: 100%;
}

.btn-nav {
    padding: 10px 20px;
}

/* ===== Navigation ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-light);
    transition: all var(--transition-base);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.logo-img {
    height: 36px;
    width: auto;
    object-fit: contain;
}

/* Footer logo - light version for dark background */
.footer-brand .logo-img {
    height: 40px;
}

.logo-text {
    font-family: var(--font-display);
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

.logo-i {
    position: relative;
    display: inline-block;
}

.logo-i::after {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 5px;
    height: 5px;
    background: #ef4444;
    border-radius: 50%;
}

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

.logo-tagline {
    font-size: 11px;
    color: var(--text-secondary);
    font-weight: 500;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    font-size: 15px;
    font-weight: 500;
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

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

.nav-links a.btn-primary {
    color: white;
}

.nav-links a.btn-primary:hover {
    color: white;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 6px;
    padding: 10px;
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: 1001;
}

.mobile-menu-btn span {
    display: block;
    width: 26px;
    height: 3px;
    background: var(--text-primary);
    border-radius: 3px;
    transition: all 0.3s ease;
}

/* ===== Hero Section ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: var(--gradient-hero);
    z-index: -2;
}

.hero-bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 80%, rgba(99, 102, 241, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(139, 92, 246, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(6, 182, 212, 0.2) 0%, transparent 40%);
    z-index: -1;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-badge {
    display: inline-block;
    padding: 10px 20px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.4), rgba(139, 92, 246, 0.4));
    color: #ffffff;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.5px;
    border-radius: var(--radius-full);
    border: 1px solid rgba(139, 92, 246, 0.6);
    margin-bottom: 24px;
    backdrop-filter: blur(10px);
}

.hero-title {
    font-size: clamp(40px, 6vw, 60px);
    color: white;
    margin-bottom: 24px;
    line-height: 1.1;
}

.hero-subtitle {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 40px;
    max-width: 520px;
}

.hero-cta {
    display: flex;
    gap: 16px;
    margin-bottom: 60px;
    flex-wrap: wrap;
}

.hero-cta .btn-outline {
    border-color: rgba(255, 255, 255, 0.3);
    color: white;
}

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

.hero-highlights {
    display: flex;
    gap: 32px;
    flex-wrap: wrap;
}

.highlight {
    display: flex;
    align-items: center;
    gap: 10px;
    color: rgba(255, 255, 255, 0.9);
    font-size: 15px;
    font-weight: 500;
}

.highlight svg {
    width: 22px;
    height: 22px;
    color: var(--primary-light);
}

/* Code Window */
.hero-visual {
    display: flex;
    justify-content: center;
}

.code-window {
    background: rgba(15, 23, 42, 0.9);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    overflow: hidden;
    box-shadow: var(--shadow-xl), var(--shadow-glow);
    width: 100%;
    max-width: 480px;
}

.code-header {
    display: flex;
    gap: 8px;
    padding: 16px 20px;
    background: rgba(0, 0, 0, 0.3);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.dot.red { background: #ff5f57; }
.dot.yellow { background: #febc2e; }
.dot.green { background: #28c840; }

.code-body {
    padding: 24px;
}

.code-body pre {
    margin: 0;
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 14px;
    line-height: 1.8;
}

.code-body code {
    color: #e2e8f0;
}

.keyword { color: #c792ea; }
.variable { color: #82aaff; }
.property { color: #f78c6c; }
.string { color: #c3e88d; }
.boolean { color: #ff9cac; }
.function { color: #82aaff; }

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    color: rgba(255, 255, 255, 0.5);
    font-size: 13px;
    animation: bounce 2s infinite;
}

.scroll-arrow {
    width: 24px;
    height: 24px;
    border-right: 2px solid currentColor;
    border-bottom: 2px solid currentColor;
    transform: rotate(45deg);
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(-10px); }
    60% { transform: translateX(-50%) translateY(-5px); }
}

/* ===== About Section ===== */
.about {
    padding: var(--section-padding) 0;
    background: var(--bg-secondary);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-lead {
    font-size: 20px;
    color: var(--text-primary);
    margin-bottom: 20px;
    font-weight: 500;
}

.about-content p {
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.about-features {
    display: flex;
    flex-direction: column;
    gap: 24px;
    margin-top: 40px;
}

.feature {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.feature-icon {
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.feature-icon svg {
    width: 24px;
    height: 24px;
    color: white;
}

.feature h3 {
    font-size: 16px;
    margin-bottom: 4px;
}

.feature p {
    font-size: 14px;
    color: var(--text-secondary);
    margin: 0;
}

/* About Image */
.about-image {
    display: flex;
    justify-content: center;
}

.image-card {
    position: relative;
    width: 100%;
    max-width: 400px;
}

.mentor-illustration {
    position: relative;
    padding: 40px;
}

.mentor-circle {
    width: 280px;
    height: 280px;
    margin: 0 auto;
}

.mentor-svg {
    width: 100%;
    height: 100%;
}

.floating-badge {
    position: absolute;
    padding: 10px 18px;
    background: white;
    border-radius: var(--radius-full);
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    box-shadow: var(--shadow-lg);
    animation: float 3s ease-in-out infinite;
}

.badge-1 {
    top: 20%;
    left: 0;
    animation-delay: 0s;
}

.badge-2 {
    top: 10%;
    right: 0;
    animation-delay: 1s;
}

.badge-3 {
    bottom: 20%;
    left: 10%;
    animation-delay: 2s;
}

.badge-4 {
    bottom: 10%;
    right: 5%;
    animation-delay: 1.5s;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

/* ===== Programs Section ===== */
.programs {
    padding: var(--section-padding) 0;
}

.programs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.program-card {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: all var(--transition-base);
    cursor: pointer;
}

.program-link {
    position: absolute;
    inset: 0;
    z-index: 1;
}

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

.program-card.featured {
    border: 2px solid var(--primary);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.05) 0%, rgba(139, 92, 246, 0.05) 100%);
}

.program-badge {
    position: absolute;
    top: -12px;
    right: 24px;
    padding: 6px 14px;
    background: var(--gradient-primary);
    color: white;
    font-size: 12px;
    font-weight: 600;
    border-radius: var(--radius-full);
}

.program-icon {
    width: 56px;
    height: 56px;
    background: rgba(99, 102, 241, 0.1);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.program-icon svg {
    width: 28px;
    height: 28px;
    color: var(--primary);
}

.program-title {
    font-size: 20px;
    margin-bottom: 12px;
}

.program-desc {
    font-size: 15px;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.program-skills {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 24px;
}

.program-skills li {
    padding: 6px 12px;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    font-size: 13px;
    color: var(--text-secondary);
}

.program-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 20px;
    border-top: 1px solid var(--border-light);
    position: relative;
    z-index: 2;
}

.program-duration {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 500;
}

.program-duration svg {
    width: 16px;
    height: 16px;
    stroke: var(--primary);
    flex-shrink: 0;
}

.program-footer .btn {
    position: relative;
    z-index: 2;
}

/* ===== Why Us Section ===== */
.why-us {
    padding: var(--section-padding) 0;
    background: var(--bg-secondary);
}

.comparison-grid {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 40px;
    align-items: center;
    margin-bottom: 60px;
}

.comparison-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-md);
}

.comparison-card h3 {
    font-size: 22px;
    margin-bottom: 24px;
    text-align: center;
}

.comparison-card ul {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.comparison-card li {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 15px;
    color: var(--text-secondary);
}

.icon-x {
    color: var(--error);
    font-weight: bold;
}

.icon-check {
    color: var(--success);
    font-weight: bold;
}

.comparison-card.traditional {
    opacity: 0.8;
}

.comparison-card.codiin {
    border: 2px solid var(--primary);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.03) 0%, rgba(139, 92, 246, 0.03) 100%);
}

.vs-badge {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    color: white;
    font-weight: 700;
    font-size: 16px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.benefit-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.benefit-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.benefit-number {
    font-family: var(--font-display);
    font-size: 48px;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 16px;
}

.benefit-card h3 {
    font-size: 18px;
    margin-bottom: 12px;
}

.benefit-card p {
    font-size: 14px;
    color: var(--text-secondary);
}

/* ===== Contact Section ===== */
.contact {
    padding: var(--section-padding) 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: start;
}

.contact-info .section-title {
    text-align: left;
}

.contact-info > p {
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 24px;
    font-style: normal;
}

.contact-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.contact-icon {
    width: 48px;
    height: 48px;
    background: rgba(99, 102, 241, 0.1);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-icon svg {
    width: 22px;
    height: 22px;
    color: var(--primary);
}

.contact-item h3 {
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: 4px;
}

.contact-item p {
    font-size: 16px;
    color: var(--text-primary);
}

.contact-item a:hover {
    color: var(--primary);
}

.social-links {
    display: flex;
    gap: 12px;
    margin-top: 40px;
}

.social-link {
    width: 44px;
    height: 44px;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
}

.social-link svg {
    width: 20px;
    height: 20px;
    color: var(--text-secondary);
}

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

.social-link:hover svg {
    color: white;
}

/* Contact Form */
.contact-form-container {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-lg);
}

.contact-form h3 {
    font-size: 24px;
    margin-bottom: 32px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.form-group .required {
    color: var(--error);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 15px;
    color: var(--text-primary);
    background: var(--bg-primary);
    transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-light);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

/* ===== Register Section ===== */
.register {
    padding: var(--section-padding) 0;
    background: var(--bg-dark);
    position: relative;
    overflow: hidden;
}

.register::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 50%, rgba(99, 102, 241, 0.2) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(139, 92, 246, 0.2) 0%, transparent 50%);
}

.register-wrapper {
    position: relative;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.register-content .section-badge {
    background: rgba(255, 255, 255, 0.1);
    color: var(--primary-light);
}

.register-content .section-title {
    color: white;
    text-align: left;
}

.register-content > p {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 32px;
}

.register-benefits {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.register-benefits li {
    display: flex;
    align-items: center;
    gap: 12px;
    color: rgba(255, 255, 255, 0.9);
    font-size: 16px;
}

.register-benefits svg {
    width: 20px;
    height: 20px;
    color: var(--success);
}

.register-form-container {
    background: white;
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-xl);
}

.register-form .form-note {
    font-size: 13px;
    color: var(--text-light);
    text-align: center;
    margin-top: 16px;
}

/* ===== Footer ===== */
.footer {
    background: var(--bg-dark);
    padding: 80px 0 40px;
    color: rgba(255, 255, 255, 0.8);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 60px;
    margin-bottom: 60px;
}

.footer-brand p {
    margin: 20px 0;
    font-size: 15px;
    opacity: 0.8;
}

.footer-company {
    margin-bottom: 12px;
    font-size: 15px;
    color: rgba(255, 255, 255, 0.9);
}

.footer-location {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
}

.footer-location svg {
    width: 18px;
    height: 18px;
}

.footer-links h4,
.footer-contact h4 {
    color: white;
    font-size: 16px;
    margin-bottom: 24px;
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    font-size: 14px;
    opacity: 0.8;
    transition: all var(--transition-fast);
}

.footer-links a:hover {
    opacity: 1;
    color: var(--primary-light);
}

.footer-contact p {
    margin-bottom: 12px;
}

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

.footer-social {
    display: flex;
    gap: 12px;
    margin-top: 20px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
}

.footer-social svg {
    width: 18px;
    height: 18px;
}

.footer-social a:hover {
    background: var(--primary);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 14px;
    opacity: 0.7;
}

.footer-legal {
    display: flex;
    gap: 24px;
}

.footer-legal a:hover {
    color: white;
}

/* ===== Modal ===== */
.modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: white;
    border-radius: var(--radius-lg);
    padding: 48px;
    text-align: center;
    max-width: 400px;
    width: 100%;
    transform: scale(0.9);
    transition: transform var(--transition-base);
}

.modal.active .modal-content {
    transform: scale(1);
}

.modal-icon {
    width: 72px;
    height: 72px;
    background: rgba(16, 185, 129, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
}

.modal-icon svg {
    width: 36px;
    height: 36px;
    color: var(--success);
}

.modal-content h3 {
    font-size: 24px;
    margin-bottom: 12px;
}

.modal-content p {
    color: var(--text-secondary);
    margin-bottom: 32px;
}

/* ===== Responsive Design ===== */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-cta {
        justify-content: center;
    }

    .hero-highlights {
        justify-content: center;
    }

    .hero-visual {
        display: none;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .about-image {
        order: -1;
    }

    .comparison-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .vs-badge {
        width: 50px;
        height: 50px;
        font-size: 14px;
        justify-self: center;
    }

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

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .register-wrapper {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 60px;
    }

    .navbar .container {
        height: 64px;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
        flex-direction: column;
        padding: 90px 0 40px;
        gap: 0;
        box-shadow: -10px 0 40px rgba(0, 0, 0, 0.15);
        transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        z-index: 1000;
        overflow-y: auto;
    }

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

    .nav-links a {
        display: block;
        padding: 18px 28px;
        font-size: 16px;
        font-weight: 500;
        color: var(--text-primary);
        border-radius: 0;
        transition: all 0.2s ease;
        border-left: 4px solid transparent;
    }

    .nav-links a:hover,
    .nav-links a:focus {
        background: rgba(99, 102, 241, 0.08);
        color: var(--primary);
        border-left-color: var(--primary);
    }

    .nav-links a:active {
        background: rgba(99, 102, 241, 0.15);
    }

    .nav-links .btn-primary {
        margin: 20px 20px 0;
        text-align: center;
        padding: 16px 24px !important;
        background: var(--gradient-primary);
        color: white !important;
        border-radius: 12px;
        border-left: none !important;
    }

    .nav-links .btn-primary:hover {
        background: var(--gradient-primary);
        box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
        border-left: none !important;
    }

    /* Hide nav-cta button on mobile - it's outside the mobile menu */
    .nav-cta {
        display: none;
    }

    /* Mobile menu overlay */
    .nav-links::before {
        content: '';
        position: fixed;
        top: 0;
        left: -100vw;
        width: 100vw;
        height: 100vh;
        background: rgba(0, 0, 0, 0.5);
        opacity: 0;
        transition: opacity 0.3s ease;
        pointer-events: none;
    }

    .nav-links.active::before {
        opacity: 1;
        pointer-events: auto;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .mobile-menu-btn.active span:nth-child(1) {
        transform: rotate(45deg) translate(6px, 6px);
    }

    .mobile-menu-btn.active span:nth-child(2) {
        opacity: 0;
        transform: translateX(10px);
    }

    .mobile-menu-btn.active span:nth-child(3) {
        transform: rotate(-45deg) translate(6px, -6px);
    }

    .hero-title {
        font-size: 36px;
    }

    .hero-highlights {
        flex-direction: column;
        gap: 16px;
        align-items: flex-start;
        width: 100%;
        max-width: 200px;
        margin: 0 auto;
    }

    .highlight {
        width: 100%;
    }

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

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

    .form-row {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }

    .scroll-indicator {
        display: none;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .section-title {
        font-size: 28px;
    }

    .hero {
        padding: 100px 0 60px;
    }

    .hero-title {
        font-size: 30px;
    }

    .btn-lg {
        padding: 14px 24px;
        font-size: 15px;
    }

    .program-card {
        padding: 24px;
    }

    .contact-form-container,
    .register-form-container {
        padding: 24px;
    }
}

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

/* ===== Program Detail Pages ===== */

/* Program Hero */
.program-hero {
    position: relative;
    padding: 140px 0 80px;
    overflow: hidden;
}

.program-hero-bg {
    position: absolute;
    inset: 0;
    background: var(--gradient-hero);
    z-index: -2;
}

.program-hero-bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 30% 70%, rgba(99, 102, 241, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 70% 30%, rgba(139, 92, 246, 0.3) 0%, transparent 50%);
    z-index: -1;
}

.program-hero-content {
    max-width: 700px;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
    margin-bottom: 24px;
    transition: color var(--transition-fast);
}

.back-link:hover {
    color: white;
}

.back-link svg {
    width: 18px;
    height: 18px;
}

.program-hero-badge {
    display: inline-block;
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.1);
    color: var(--primary-light);
    font-size: 14px;
    font-weight: 600;
    border-radius: var(--radius-full);
    border: 1px solid rgba(255, 255, 255, 0.1);
    margin-bottom: 20px;
}

.program-hero-badge.trending {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.3), rgba(139, 92, 246, 0.3));
    border-color: rgba(139, 92, 246, 0.5);
}

.program-hero h1 {
    font-size: clamp(40px, 6vw, 56px);
    color: white;
    margin-bottom: 20px;
    line-height: 1.1;
}

.program-hero-desc {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 32px;
    line-height: 1.7;
}

.program-hero-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 24px;
    margin-bottom: 32px;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 8px;
    color: rgba(255, 255, 255, 0.9);
    font-size: 15px;
}

.meta-item svg {
    width: 20px;
    height: 20px;
    color: var(--primary-light);
}

.program-hero-cta {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.program-hero-cta .btn-outline {
    border-color: rgba(255, 255, 255, 0.3);
    color: white;
}

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

/* Program Overview */
.program-overview {
    padding: var(--section-padding) 0;
}

.overview-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 60px;
    align-items: start;
}

.overview-content h2 {
    font-size: 32px;
    margin-bottom: 20px;
}

.overview-content > p {
    color: var(--text-secondary);
    font-size: 16px;
    line-height: 1.7;
    margin-bottom: 32px;
}

.learning-outcomes {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.outcome {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 15px;
    color: var(--text-primary);
}

.outcome svg {
    width: 20px;
    height: 20px;
    color: var(--success);
    flex-shrink: 0;
    margin-top: 2px;
}

.sidebar-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: 32px;
    border: 1px solid var(--border-light);
}

.sidebar-card h3 {
    font-size: 20px;
    margin-bottom: 24px;
}

.highlights-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.highlights-list li strong {
    display: block;
    font-size: 15px;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.highlights-list li p {
    font-size: 14px;
    color: var(--text-secondary);
    margin: 0;
}

/* Program Curriculum */
.program-curriculum {
    padding: var(--section-padding) 0;
    background: var(--bg-secondary);
}

.curriculum-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.curriculum-module {
    background: white;
    border-radius: var(--radius-lg);
    padding: 28px;
    border: 1px solid var(--border-color);
    transition: all var(--transition-base);
}

.curriculum-module:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.module-header {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 20px;
}

.module-number {
    font-family: var(--font-display);
    font-size: 28px;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.module-header h3 {
    font-size: 18px;
    line-height: 1.3;
}

.module-topics {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.module-topics li {
    font-size: 14px;
    color: var(--text-secondary);
    padding-left: 16px;
    position: relative;
}

.module-topics li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    width: 6px;
    height: 6px;
    background: var(--primary);
    border-radius: 50%;
}

/* Program Projects */
.program-projects {
    padding: var(--section-padding) 0;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: all var(--transition-base);
}

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

.project-icon {
    width: 56px;
    height: 56px;
    background: rgba(99, 102, 241, 0.1);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.project-icon svg {
    width: 28px;
    height: 28px;
    color: var(--primary);
}

.project-card h3 {
    font-size: 20px;
    margin-bottom: 12px;
}

.project-card > p {
    font-size: 15px;
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.6;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.project-tech span {
    padding: 6px 12px;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Program Audience */
.program-audience {
    padding: var(--section-padding) 0;
    background: var(--bg-secondary);
}

.audience-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 60px;
    align-items: start;
}

.audience-content h2 {
    font-size: 32px;
    margin-bottom: 32px;
}

.audience-list {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.audience-item {
    display: flex;
    gap: 16px;
}

.audience-icon {
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.audience-icon svg {
    width: 24px;
    height: 24px;
    color: white;
}

.audience-item h3 {
    font-size: 18px;
    margin-bottom: 6px;
}

.audience-item p {
    font-size: 14px;
    color: var(--text-secondary);
    margin: 0;
}

.prereq-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: 32px;
    border: 1px solid var(--border-color);
}

.prereq-card h3 {
    font-size: 20px;
    margin-bottom: 20px;
}

.prereq-card ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 20px;
}

.prereq-card li {
    font-size: 15px;
    color: var(--text-secondary);
    padding-left: 24px;
    position: relative;
}

.prereq-card li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success);
    font-weight: bold;
}

.prereq-note {
    font-size: 14px;
    color: var(--primary);
    background: rgba(99, 102, 241, 0.1);
    padding: 12px 16px;
    border-radius: var(--radius-md);
    margin: 0;
}

/* Program CTA */
.program-cta {
    padding: var(--section-padding) 0;
    background: var(--bg-dark);
    position: relative;
}

.program-cta::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 30% 50%, rgba(99, 102, 241, 0.2) 0%, transparent 50%),
        radial-gradient(circle at 70% 50%, rgba(139, 92, 246, 0.2) 0%, transparent 50%);
}

.cta-content {
    position: relative;
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.cta-content h2 {
    font-size: clamp(28px, 4vw, 40px);
    color: white;
    margin-bottom: 16px;
}

.cta-content p {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 32px;
}

.cta-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.cta-buttons .btn-outline {
    border-color: rgba(255, 255, 255, 0.3);
    color: white;
}

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

/* Program Page Responsive */
@media (max-width: 1024px) {
    .overview-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

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

    .audience-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .program-hero {
        padding: 120px 0 60px;
    }

    .program-hero h1 {
        font-size: 32px;
    }

    .program-hero-meta {
        flex-direction: column;
        gap: 12px;
    }

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

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

@media (max-width: 480px) {
    .program-hero h1 {
        font-size: 28px;
    }

    .sidebar-card,
    .prereq-card {
        padding: 24px;
    }

    .curriculum-module {
        padding: 20px;
    }
}

/* ===== Enhanced Program Page Styles ===== */

/* Why Learn Section */
.why-learn {
    padding: var(--section-padding) 0;
    background: var(--bg-secondary);
}

.why-learn-grid,
.why-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 48px;
}

.why-card {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 32px;
    border: 1px solid var(--border-color);
    transition: var(--transition-base);
}

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

.why-icon {
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.why-icon svg {
    width: 24px;
    height: 24px;
    stroke: white;
}

.why-card h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.why-card p {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 15px;
}

.industry-stats,
.why-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    background: var(--gradient-primary);
    border-radius: 16px;
    padding: 40px;
}

.stat-item {
    text-align: center;
    color: white;
}

.stat-number {
    display: block;
    font-family: var(--font-display);
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 14px;
    opacity: 0.9;
}

/* Career Section */
.career-section {
    padding: var(--section-padding) 0;
    background: var(--bg-primary);
}

.career-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.career-card {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 28px;
    border: 1px solid var(--border-color);
    transition: var(--transition-base);
}

.career-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.career-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
    flex-shrink: 0;
}

.career-icon svg {
    width: 24px;
    height: 24px;
    stroke: var(--primary);
}

.career-card h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.career-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 16px;
    flex-wrap: wrap;
    gap: 12px;
}

.career-header h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
}

.salary-badge,
.demand-badge {
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    color: white;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.career-card > p {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 16px;
}

.career-skills {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.career-skills span {
    background: var(--bg-secondary);
    color: var(--text-secondary);
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 500;
}

/* Tech Deep Dive Section */
.tech-deep-dive {
    padding: var(--section-padding) 0;
    background: var(--bg-secondary);
}

.tech-categories {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.tech-category h3 {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 24px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--primary);
    display: inline-block;
}

.tech-items {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.tech-item {
    display: flex;
    gap: 16px;
    background: var(--bg-card);
    border-radius: 12px;
    padding: 20px;
    border: 1px solid var(--border-color);
    transition: var(--transition-base);
}

.tech-item:hover {
    border-color: var(--primary-light);
    box-shadow: var(--shadow-md);
}

.tech-logo {
    font-size: 32px;
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.tech-info h4 {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.tech-info p {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.6;
}

.companies-using {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 40px;
    text-align: center;
    border: 1px solid var(--border-color);
}

.companies-using h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.companies-intro {
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.company-logos {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
}

.company-name {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
    font-size: 18px;
    padding: 8px 20px;
    border: 2px solid var(--primary-light);
    border-radius: 8px;
}

/* Detailed Projects Section */
.projects-detailed {
    padding: var(--section-padding) 0;
    background: var(--bg-primary);
}

.projects-detailed-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.project-detailed-card {
    display: flex;
    flex-direction: column;
    background: var(--bg-card);
    border-radius: 16px;
    padding: 28px;
    border: 1px solid var(--border-color);
    transition: var(--transition-base);
}

.project-detailed-card:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 16px;
}

.project-detailed-card .project-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.project-detailed-card .project-icon svg {
    width: 24px;
    height: 24px;
    stroke: var(--primary);
}

.project-badge {
    background: var(--gradient-primary);
    color: white;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.project-detailed-card h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 10px;
}

.project-detailed-card > p {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 16px;
}

.project-number {
    font-family: var(--font-display);
    font-size: 48px;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    flex-shrink: 0;
    line-height: 1;
}

.project-content {
    flex: 1;
}

.project-content h3 {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.project-desc {
    color: var(--text-secondary);
    font-size: 16px;
    line-height: 1.7;
    margin-bottom: 20px;
}

.project-features h4,
.project-learnings h4 {
    font-size: 14px;
    font-weight: 700;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 12px;
}

.project-features ul {
    list-style: none;
    padding: 0;
    margin: 0 0 20px 0;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
}

.project-features li {
    color: var(--text-secondary);
    font-size: 14px;
    padding-left: 20px;
    position: relative;
}

.project-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success);
    font-weight: 700;
}

.project-learnings {
    margin-bottom: 20px;
}

.project-learnings p {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.6;
    background: var(--bg-secondary);
    padding: 12px 16px;
    border-radius: 8px;
    border-left: 3px solid var(--primary);
}

.project-detailed-card .project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.project-detailed-card .project-tech span {
    background: var(--gradient-primary);
    color: white;
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
}

/* Skills Section */
.skills-section {
    padding: var(--section-padding) 0;
    background: var(--bg-primary);
}

.skills-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
}

.skills-category,
.skill-category {
    margin-bottom: 32px;
}

.skills-category h3,
.skill-category h3 {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 24px;
}

.skill-items {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.skill-item {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.skill-name {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
}

.skill-bars {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* For structure: .skill-bar > .skill-info + .skill-progress (data-analytics style) */
.skill-bars .skill-bar {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.skill-bars .skill-bar .skill-progress {
    height: 10px;
    background: var(--bg-secondary);
    border-radius: 5px;
    overflow: hidden;
    position: relative;
}

.skill-bars .skill-bar .skill-progress::after {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: var(--progress, 0%);
    background: var(--gradient-primary);
    border-radius: 5px;
    transition: width 1s ease-out;
}

/* For structure: .skill-bar > .skill-progress (full-stack-python style) */
.skill-items .skill-bar {
    height: 10px;
    background: var(--bg-secondary);
    border-radius: 5px;
    overflow: hidden;
    position: relative;
}

.skill-items .skill-bar .skill-progress {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: 5px;
    transition: width 1s ease-out;
}

.skill-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.skill-info span:first-child {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
}

.skill-info span:last-child {
    font-size: 13px;
    color: var(--text-secondary);
}

.skill-progress {
    height: 10px;
    background: var(--bg-secondary);
    border-radius: 5px;
    overflow: hidden;
    position: relative;
}

.skill-progress::after {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: var(--progress, 0%);
    background: var(--gradient-primary);
    border-radius: 5px;
    transition: width 1s ease-out;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.skill-tag {
    background: var(--bg-secondary);
    color: var(--text-secondary);
    padding: 10px 18px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    border: 1px solid var(--border-color);
    transition: var(--transition-base);
}

.skill-tag:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

/* FAQ Section */
.faq-section {
    padding: var(--section-padding) 0;
    background: var(--bg-secondary);
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.faq-item {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 24px;
    border: 1px solid var(--border-color);
    transition: var(--transition-base);
}

.faq-item:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--primary-light);
}

.faq-question {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
    line-height: 1.4;
}

.faq-answer {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.7;
}

/* Responsive - Enhanced Sections */
@media (max-width: 1024px) {
    .why-learn-grid,
    .why-cards {
        grid-template-columns: repeat(2, 1fr);
    }

    .industry-stats,
    .why-stats {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .tech-items {
        grid-template-columns: 1fr;
    }

    .projects-detailed-grid {
        grid-template-columns: 1fr;
    }

    .project-features ul {
        grid-template-columns: 1fr;
    }

    .skills-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .why-learn-grid,
    .why-cards {
        grid-template-columns: 1fr;
    }

    .industry-stats,
    .why-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
        padding: 24px;
    }

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

    .stat-number {
        font-size: 28px;
    }

    .stat-label {
        font-size: 12px;
    }

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

    .skills-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .tech-items {
        grid-template-columns: 1fr;
    }

    .projects-detailed-grid {
        grid-template-columns: 1fr;
    }

    .project-detailed-card {
        padding: 24px;
    }

    .project-features ul {
        grid-template-columns: 1fr;
    }

    .project-number {
        font-size: 36px;
    }

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

    .company-logos {
        gap: 12px;
    }

    .company-name {
        font-size: 14px;
        padding: 6px 14px;
    }
}

@media (max-width: 480px) {
    .why-card {
        padding: 20px;
    }

    .why-icon {
        width: 40px;
        height: 40px;
    }

    .why-icon svg {
        width: 20px;
        height: 20px;
    }

    .why-card h3 {
        font-size: 18px;
    }

    .industry-stats,
    .why-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
        padding: 20px;
    }

    .stat-number {
        font-size: 24px;
    }

    .stat-label {
        font-size: 11px;
    }

    .career-card {
        padding: 20px;
    }

    .career-icon {
        width: 40px;
        height: 40px;
    }

    .career-icon svg {
        width: 20px;
        height: 20px;
    }

    .tech-item {
        padding: 16px;
    }

    .tech-item h4 {
        font-size: 15px;
    }

    .tech-item p {
        font-size: 13px;
    }

    .project-detailed-card {
        padding: 20px;
    }

    .project-detailed-card h3 {
        font-size: 18px;
    }

    .project-header {
        flex-wrap: wrap;
        gap: 12px;
    }

    .project-badge {
        font-size: 11px;
        padding: 4px 10px;
    }

    .skill-tags {
        gap: 8px;
    }

    .skill-tag {
        padding: 8px 14px;
        font-size: 13px;
    }

    .faq-item {
        padding: 20px;
    }

    .faq-item h3 {
        font-size: 16px;
    }

    .faq-item p {
        font-size: 14px;
    }
}

/* WhatsApp Floating Button */
.whatsapp-float {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 60px;
    height: 60px;
    background: #25D366;
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(37, 211, 102, 0.4);
    z-index: 1000;
    transition: all 0.3s ease;
}

.whatsapp-float:hover {
    background: #128C7E;
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(37, 211, 102, 0.5);
}

.whatsapp-float svg {
    width: 32px;
    height: 32px;
    fill: #fff;
}

@media (max-width: 768px) {
    .whatsapp-float {
        bottom: 16px;
        right: 16px;
        width: 54px;
        height: 54px;
    }

    .whatsapp-float svg {
        width: 28px;
        height: 28px;
    }
}

/* ===== Legal Pages (Privacy Policy & Terms of Service) ===== */
.legal-content {
    padding: 60px 0 100px;
    background: var(--bg-secondary);
}

.legal-content .container {
    max-width: 900px;
}

.legal-section {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 32px 40px;
    margin-bottom: 24px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
}

.legal-section h2 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--primary);
}

.legal-section h3 {
    font-family: var(--font-display);
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 24px 0 12px;
}

.legal-section p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 16px;
}

.legal-section ul {
    margin: 16px 0;
    padding-left: 24px;
}

.legal-section ul li {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 8px;
    position: relative;
}

.legal-section ul li::marker {
    color: var(--primary);
}

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

.legal-section a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

.legal-section .contact-list {
    list-style: none;
    padding-left: 0;
}

.legal-section .contact-list li {
    padding: 8px 0;
}

@media (max-width: 768px) {
    .legal-content {
        padding: 40px 0 60px;
    }

    .legal-section {
        padding: 24px 20px;
        margin-bottom: 16px;
    }

    .legal-section h2 {
        font-size: 1.25rem;
    }

    .legal-section h3 {
        font-size: 1.05rem;
    }
}

/* ===== Article Pages ===== */
.article-hero {
    background: linear-gradient(135deg, #1e1b4b 0%, #312e81 50%, #4338ca 100%);
    padding: 140px 0 70px;
    color: #fff;
    position: relative;
    overflow: hidden;
}

.article-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.5;
}

.article-hero::after {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.15) 0%, transparent 70%);
    pointer-events: none;
}

.article-hero .container {
    position: relative;
    z-index: 1;
}

.article-breadcrumb {
    margin-bottom: 24px;
    font-size: 0.9rem;
}

.article-breadcrumb a,
.article-breadcrumb span {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.article-breadcrumb a:hover {
    color: #fff;
}

.article-breadcrumb span:last-child {
    color: #a5b4fc;
    font-weight: 500;
}

.article-hero h1 {
    font-family: var(--font-display);
    font-size: clamp(2.25rem, 5vw, 3.5rem);
    font-weight: 800;
    margin-bottom: 20px;
    line-height: 1.15;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    background: linear-gradient(135deg, #fff 0%, #e0e7ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.article-subtitle {
    font-size: 1.35rem;
    color: rgba(255, 255, 255, 0.9);
    max-width: 700px;
    line-height: 1.6;
}

.article-meta {
    margin-top: 28px;
    display: flex;
    gap: 24px;
    font-size: 0.9rem;
}

.article-meta span {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: rgba(255, 255, 255, 0.85);
    background: rgba(255, 255, 255, 0.1);
    padding: 8px 16px;
    border-radius: 20px;
    backdrop-filter: blur(4px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    font-weight: 500;
}

.article-meta span::before {
    content: '';
    width: 6px;
    height: 6px;
    background: #a5b4fc;
    border-radius: 50%;
}

.article-content {
    padding: 60px 0 100px;
    background: var(--bg-secondary);
}

.article-body {
    max-width: 820px;
    margin: 0 auto;
}

.article-section {
    background: var(--bg-card);
    border-radius: 20px;
    padding: 36px 44px;
    margin-bottom: 28px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
    border: 1px solid var(--border-light);
    transition: all var(--transition-base);
    position: relative;
}

.article-section::before {
    content: '';
    position: absolute;
    left: 0;
    top: 20px;
    bottom: 20px;
    width: 4px;
    background: var(--gradient-primary);
    border-radius: 0 4px 4px 0;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.article-section:hover {
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
    transform: translateX(4px);
}

.article-section:hover::before {
    opacity: 1;
}

.article-section h2 {
    font-family: var(--font-display);
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 24px;
    padding-bottom: 14px;
    border-bottom: 3px solid var(--primary);
    display: inline-block;
}

.article-section h3 {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 32px 0 14px;
    padding-left: 16px;
    border-left: 4px solid var(--primary-light);
}

.article-section h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 24px 0 10px;
}

.article-section p {
    color: var(--text-secondary);
    line-height: 1.85;
    margin-bottom: 18px;
    font-size: 1.05rem;
}

.article-section ul, .article-section ol {
    margin: 18px 0;
    padding-left: 28px;
}

.article-section li {
    color: var(--text-secondary);
    line-height: 1.85;
    margin-bottom: 10px;
    font-size: 1.02rem;
}

.article-section li strong {
    color: var(--text-primary);
}

.article-section a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.article-section a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

/* Code blocks in articles */
.code-block {
    background: #1e293b;
    border-radius: 12px;
    padding: 20px;
    margin: 20px 0;
    overflow-x: auto;
}

.code-block pre {
    margin: 0;
}

.code-block code {
    font-family: 'Fira Code', 'Monaco', 'Consolas', monospace;
    font-size: 0.875rem;
    color: #e2e8f0;
    line-height: 1.6;
}

/* Highlight box */
.highlight-box {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(139, 92, 246, 0.1));
    border-left: 4px solid var(--primary);
    border-radius: 0 12px 12px 0;
    padding: 20px 24px;
    margin: 24px 0;
}

.highlight-box h4 {
    color: var(--primary);
    margin: 0 0 12px 0;
}

.highlight-box p, .highlight-box ol, .highlight-box li {
    margin-bottom: 8px;
}

/* Use cases grid in articles */
.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin: 24px 0;
}

.use-case-card {
    background: var(--bg-secondary);
    border-radius: 12px;
    padding: 20px;
    border: 1px solid var(--border-light);
}

.use-case-card h4 {
    color: var(--primary);
    margin: 0 0 8px 0;
    font-size: 1rem;
}

.use-case-card p {
    font-size: 0.9rem;
    margin: 0;
}

/* Comparison grid for articles (chunking strategies, etc.) */
.article-section .comparison-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin: 24px 0;
}

.article-section .comparison-card {
    background: var(--bg-secondary);
    border-radius: 12px;
    padding: 20px;
    border: 1px solid var(--border-light);
    box-shadow: none;
}

.article-section .comparison-card h4 {
    color: var(--primary);
    margin: 0 0 8px 0;
    font-size: 1rem;
}

.article-section .comparison-card p {
    font-size: 0.9rem;
    margin: 0 0 10px 0;
    color: var(--text-secondary);
}

.article-section .comparison-card code {
    display: inline-block;
    background: var(--bg-dark);
    color: #e2e8f0;
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 0.8rem;
    font-family: 'Fira Code', 'Monaco', 'Consolas', monospace;
}

/* Comparison table */
.comparison-table {
    width: 100%;
    border-collapse: collapse;
    margin: 24px 0;
    font-size: 0.9rem;
}

.comparison-table th,
.comparison-table td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border-light);
}

.comparison-table th {
    background: var(--bg-secondary);
    font-weight: 600;
    color: var(--text-primary);
}

.comparison-table td {
    color: var(--text-secondary);
}

.comparison-table tr:hover td {
    background: var(--bg-secondary);
}

/* DB comparison cards */
.db-comparison {
    display: grid;
    gap: 24px;
    margin: 24px 0;
}

.db-card {
    background: var(--bg-secondary);
    border-radius: 12px;
    padding: 24px;
    border: 1px solid var(--border-light);
}

.db-card h3 {
    margin: 0 0 8px 0;
    display: inline;
}

.db-type {
    background: var(--primary);
    color: #fff;
    font-size: 0.75rem;
    padding: 4px 10px;
    border-radius: 12px;
    margin-left: 12px;
    vertical-align: middle;
}

.db-card > p {
    margin: 12px 0;
}

.db-best-for {
    background: rgba(99, 102, 241, 0.1);
    padding: 12px 16px;
    border-radius: 8px;
    margin: 16px 0;
    font-size: 0.9rem;
}

.db-card .code-block {
    margin-top: 16px;
}

/* Principles grid */
.principles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 16px;
    margin: 24px 0;
}

.principle-card {
    background: var(--bg-secondary);
    border-radius: 12px;
    padding: 20px;
    border: 1px solid var(--border-light);
}

.principle-card h4 {
    color: var(--text-primary);
    margin: 0 0 12px 0;
}

.principle-card .bad {
    color: var(--error);
    font-size: 0.9rem;
}

.principle-card .good {
    color: var(--success);
    font-size: 0.9rem;
}

/* Related articles */
.related-articles {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin-top: 20px;
}

.related-article-card {
    background: var(--bg-secondary);
    border-radius: 12px;
    padding: 20px;
    border: 1px solid var(--border-light);
    text-decoration: none;
    transition: all var(--transition-fast);
}

.related-article-card:hover {
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.related-article-card h4 {
    color: var(--primary);
    margin: 0 0 8px 0;
    font-size: 1rem;
}

.related-article-card p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin: 0;
}

/* Article CTA */
.article-cta {
    background: var(--gradient-primary);
    color: #fff;
    text-align: center;
}

.article-cta h2 {
    color: #fff;
    border-bottom-color: rgba(255,255,255,0.3);
}

.article-cta p {
    color: rgba(255,255,255,0.9);
    max-width: 600px;
    margin: 0 auto 24px;
}

.article-cta .btn-primary {
    background: #fff;
    color: var(--primary);
}

.article-cta .btn-primary:hover {
    background: rgba(255,255,255,0.9);
}

/* Tech link in course pages */
.tech-link {
    color: var(--primary);
    text-decoration: none;
    border-bottom: 1px dashed var(--primary);
    transition: all var(--transition-fast);
}

.tech-link:hover {
    color: var(--primary-dark);
    border-bottom-style: solid;
}

/* Responsive article styles */
@media (max-width: 768px) {
    .article-hero {
        padding: 110px 0 45px;
    }

    .article-hero h1 {
        font-size: 1.85rem;
        line-height: 1.2;
        -webkit-text-fill-color: #fff;
        background: none;
    }

    .article-breadcrumb {
        font-size: 0.8rem;
        margin-bottom: 18px;
    }

    .article-subtitle {
        font-size: 1.05rem;
        line-height: 1.5;
    }

    .article-meta {
        flex-direction: row;
        flex-wrap: wrap;
        gap: 10px;
        margin-top: 20px;
    }

    .article-meta span {
        padding: 6px 12px;
        font-size: 0.8rem;
    }

    .article-content {
        padding: 32px 0 50px;
    }

    .article-body {
        padding: 0 4px;
    }

    .article-section {
        padding: 24px 20px;
        margin-bottom: 16px;
        border-radius: 16px;
    }

    .article-section:hover {
        transform: none;
    }

    .article-section::before {
        display: none;
    }

    .article-section h2 {
        font-size: 1.3rem;
        margin-bottom: 18px;
        padding-bottom: 12px;
    }

    .article-section h3 {
        font-size: 1.1rem;
        margin: 24px 0 12px;
        padding-left: 12px;
    }

    .article-section h4 {
        font-size: 1rem;
        margin: 18px 0 8px;
    }

    .article-section p {
        font-size: 1rem;
        line-height: 1.75;
        margin-bottom: 14px;
    }

    .article-section li {
        font-size: 0.95rem;
        line-height: 1.7;
    }

    .code-block {
        padding: 16px;
        margin: 16px -20px;
        border-radius: 0;
    }

    .code-block code {
        font-size: 0.8rem;
    }

    .highlight-box {
        padding: 16px 18px;
        margin: 18px 0;
    }

    .highlight-box h4 {
        font-size: 1rem;
    }

    .use-cases-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .use-case-card {
        padding: 16px;
    }

    .article-section .comparison-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .article-section .comparison-card {
        padding: 16px;
    }

    .principles-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .principle-card {
        padding: 16px;
    }

    .db-comparison {
        gap: 16px;
    }

    .db-card {
        padding: 18px;
    }

    .comparison-table {
        font-size: 0.8rem;
        display: block;
        overflow-x: auto;
    }

    .comparison-table th,
    .comparison-table td {
        padding: 8px 10px;
        white-space: nowrap;
    }

    .related-articles {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .related-article-card {
        padding: 16px;
    }

    .article-cta {
        padding: 40px 20px;
    }

    .article-cta h2 {
        font-size: 1.4rem;
    }

    .article-cta p {
        font-size: 0.95rem;
    }
}