/* Reset and Base Styles - AI / Trending Theme */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #0ea5e9;
    --primary-deep: #0284c7;
    --secondary-color: #6366f1;
    --accent-color: #22d3ee;
    --ai-blue: #38bdf8;
    --ai-cyan: #22d3ee;
    --ai-violet: #818cf8;
    --text-color: #0f172a;
    --text-muted: #475569;
    --text-light: #64748b;
    --bg-color: #ffffff;
    --bg-light: #f8fafc;
    --bg-slate: #f1f5f9;
    --surface: rgba(255, 255, 255, 0.8);
    --surface-border: rgba(148, 163, 184, 0.2);
    --bg-gradient: linear-gradient(135deg, #0ea5e9 0%, #6366f1 50%, #22d3ee 100%);
    --bg-mesh: radial-gradient(ellipse 80% 50% at 50% -20%, rgba(14, 165, 233, 0.25), transparent),
               radial-gradient(ellipse 60% 40% at 100% 50%, rgba(99, 102, 241, 0.15), transparent),
               radial-gradient(ellipse 50% 30% at 0% 80%, rgba(34, 211, 238, 0.2), transparent);
    --border-color: #e2e8f0;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.05), 0 4px 20px rgba(14, 165, 233, 0.08);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.06), 0 4px 24px rgba(14, 165, 233, 0.12);
    --shadow-glow: 0 0 40px rgba(34, 211, 238, 0.25);
    --glow: 0 0 24px rgba(34, 211, 238, 0.4);
    --radius-sm: 10px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    --radius-full: 9999px;
    --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header & Navigation - Glass */
.header {
    background: var(--surface);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 var(--surface-border);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--surface-border);
}

.navbar {
    padding: 0.875rem 0;
}

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

.nav-brand a {
    text-decoration: none;
    color: var(--text-color);
}

.nav-brand h1 {
    font-size: 1.35rem;
    font-weight: 800;
    margin-bottom: 0;
    letter-spacing: -0.02em;
    background: var(--bg-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-brand .subtitle {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 0.25rem;
    align-items: center;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-muted);
    font-weight: 500;
    font-size: 0.9375rem;
    padding: 0.5rem 0.875rem;
    border-radius: var(--radius-full);
    transition: var(--transition);
    position: relative;
}

.nav-menu a:hover,
.nav-menu a[aria-current="page"] {
    color: var(--primary-color);
    background: rgba(14, 165, 233, 0.08);
}

.nav-menu a[aria-current="page"] {
    color: var(--primary-deep);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    gap: 5px;
}

.nav-toggle span {
    width: 22px;
    height: 2px;
    background-color: var(--text-color);
    border-radius: 2px;
    transition: var(--transition);
}

/* Hero Section - Mesh + Grid AI theme */
.hero {
    background: linear-gradient(180deg, #0c4a6e 0%, #0e7490 35%, #6366f1 100%);
    color: white;
    padding: 5.5rem 0 6rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--bg-mesh);
    pointer-events: none;
    z-index: 0;
}

.hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image: linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
                      linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    pointer-events: none;
    z-index: 0;
}

.ai-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 1;
}

.ai-particles::before,
.ai-particles::after {
    content: '';
    position: absolute;
    width: 280px;
    height: 280px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(34, 211, 238, 0.2) 0%, transparent 70%);
    animation: float 18s ease-in-out infinite;
}

.ai-particles::before {
    top: 5%;
    left: 15%;
    animation-delay: 0s;
}

.ai-particles::after {
    top: 55%;
    right: 10%;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(129, 140, 248, 0.2) 0%, transparent 70%);
    animation-delay: -6s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); opacity: 0.6; }
    33% { transform: translate(30px, -40px) scale(1.1); opacity: 0.8; }
    66% { transform: translate(-20px, 20px) scale(0.95); opacity: 0.5; }
}

.hero-content {
    max-width: 880px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.12);
    backdrop-filter: blur(12px);
    padding: 0.5rem 1.25rem;
    border-radius: var(--radius-full);
    margin-bottom: 1.5rem;
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    border: 1px solid rgba(255, 255, 255, 0.2);
    animation: fadeInUp 0.8s ease both;
}

.pulse-dot {
    width: 6px;
    height: 6px;
    background: #34d399;
    border-radius: 50%;
    box-shadow: 0 0 12px #34d399;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.6; transform: scale(1.3); }
}

.hero-title {
    font-size: clamp(2.25rem, 5vw, 3.5rem);
    font-weight: 800;
    margin-bottom: 1.25rem;
    line-height: 1.15;
    letter-spacing: -0.03em;
    animation: fadeInUp 0.8s ease 0.1s both;
}

.gradient-text {
    background: linear-gradient(135deg, #fff 0%, #a5f3fc 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(1.05rem, 2vw, 1.25rem);
    margin-bottom: 2.25rem;
    opacity: 0.92;
    line-height: 1.6;
    max-width: 640px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 2.5rem;
    margin: 2.5rem 0;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.35s both;
}

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

.stat-number {
    font-size: clamp(2.25rem, 4vw, 3rem);
    font-weight: 800;
    color: #a5f3fc;
    margin-bottom: 0.25rem;
    letter-spacing: -0.02em;
    text-shadow: 0 0 24px rgba(165, 243, 252, 0.4);
}

.stat-label {
    font-size: 0.75rem;
    opacity: 0.88;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.hero-cta {
    display: flex;
    gap: 0.875rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 1.25rem;
    animation: fadeInUp 0.8s ease 0.5s both;
}

.hero-note {
    font-size: 0.8125rem;
    opacity: 0.85;
    animation: fadeInUp 0.8s ease 0.6s both;
}

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

/* Buttons - Pill + Gradient */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 1.75rem;
    border-radius: var(--radius-full);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9375rem;
    transition: var(--transition);
    border: 2px solid transparent;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(255,255,255,0.2) 0%, transparent 50%);
    opacity: 0;
    transition: var(--transition);
    pointer-events: none;
}

.btn:hover::before {
    opacity: 1;
}

.btn-primary {
    background: white;
    color: var(--primary-deep);
    z-index: 1;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.12);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.15);
    color: white;
    border-color: rgba(255, 255, 255, 0.4);
    z-index: 1;
}

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

.btn-glow {
    box-shadow: 0 0 28px rgba(34, 211, 238, 0.45);
    animation: glow-pulse 2.5s ease-in-out infinite;
}

@keyframes glow-pulse {
    0%, 100% { box-shadow: 0 0 28px rgba(34, 211, 238, 0.45); }
    50% { box-shadow: 0 0 36px rgba(34, 211, 238, 0.6); }
}

.btn-large {
    padding: 1rem 2.25rem;
    font-size: 1rem;
}

/* Section Styles */
section {
    padding: 4.5rem 0;
    position: relative;
}

.section-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 800;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--text-color);
    position: relative;
    letter-spacing: -0.02em;
}

.section-subtitle {
    font-size: 1.25rem;
    font-weight: 700;
    margin-top: 2rem;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -12px;
    left: 50%;
    transform: translateX(-50%);
    width: 48px;
    height: 4px;
    background: var(--bg-gradient);
    border-radius: var(--radius-full);
}

/* Answer-first (AEO) - Card style */
.answer-first {
    padding: 2.25rem 0;
    background: var(--bg-slate);
}
.answer-first-text {
    font-size: 1.0625rem;
    line-height: 1.75;
    color: var(--text-color);
    text-align: center;
    max-width: 720px;
    margin: 0 auto;
}
.answer-first-text a {
    color: var(--primary-color);
    font-weight: 600;
    text-decoration: underline;
    text-underline-offset: 3px;
}

/* How to choose - Steps */
.how-to-section {
    padding: 3rem 0;
    background: white;
}
.how-to-steps {
    max-width: 600px;
    margin: 0 auto;
    padding-left: 1.5rem;
    line-height: 2;
    font-size: 1rem;
    color: var(--text-muted);
}
.how-to-steps li {
    margin-bottom: 1rem;
}
.how-to-steps a {
    color: var(--primary-color);
    font-weight: 600;
}

/* Key facts (GEO) */
.key-facts {
    padding: 3rem 0;
    background: var(--bg-light);
}
.facts-list {
    list-style: none;
    max-width: 680px;
    margin: 0 auto;
}
.facts-list li {
    padding: 1rem 0;
    border-bottom: 1px solid var(--border-color);
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-muted);
}
.facts-list li:last-child {
    border-bottom: none;
}
.facts-list a {
    color: var(--primary-color);
    font-weight: 600;
}

/* Where to enroll */
.enroll-block {
    padding: 2rem 0;
    background: var(--bg-slate);
}
.enroll-statement {
    text-align: center;
    font-size: 1.0625rem;
    color: var(--text-color);
}
.enroll-statement a {
    color: var(--primary-color);
    font-weight: 600;
}

/* FAQ Section - Cards */
.faq-section {
    padding: 4rem 0;
    background: var(--bg-light);
}
.faq-list {
    max-width: 720px;
    margin: 0 auto;
}
.faq-item {
    margin-bottom: 1rem;
    padding: 1.5rem 1.75rem;
    background: white;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}
.faq-item:hover {
    border-color: rgba(14, 165, 233, 0.3);
    box-shadow: 0 4px 20px rgba(14, 165, 233, 0.08);
}
.faq-item h3 {
    font-size: 1.0625rem;
    margin-bottom: 0.5rem;
    color: var(--text-color);
    font-weight: 700;
}
.faq-item p {
    color: var(--text-muted);
    line-height: 1.65;
    margin: 0;
    font-size: 0.9375rem;
}

/* Features Section - Bento-style cards */
.features {
    background: linear-gradient(180deg, var(--bg-light) 0%, white 100%);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.25rem;
}

.feature-card {
    background: white;
    padding: 2rem 1.75rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    text-align: center;
    transition: var(--transition);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--bg-gradient);
    opacity: 0;
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(14, 165, 233, 0.25);
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1.25rem;
    display: inline-block;
    animation: float-icon 4s ease-in-out infinite;
}

.ai-icon {
    filter: drop-shadow(0 4px 12px rgba(14, 165, 233, 0.2));
}

@keyframes float-icon {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-6px); }
}

.feature-card h3 {
    font-size: 1.2rem;
    margin-bottom: 0.75rem;
    color: var(--text-color);
    font-weight: 700;
    letter-spacing: -0.01em;
}

.feature-card p {
    color: var(--text-muted);
    line-height: 1.65;
    font-size: 0.9375rem;
}

/* Courses Preview Section */
.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.course-card {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.75rem;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.course-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: var(--bg-gradient);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.course-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--bg-gradient);
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition);
}

.course-card:hover::before {
    transform: scaleX(1);
}

.course-card:hover {
    border-color: rgba(14, 165, 233, 0.35);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.course-card h3 {
    font-size: 1.2rem;
    margin-bottom: 0.75rem;
    color: var(--text-color);
    font-weight: 700;
}

.course-card p {
    color: var(--text-muted);
    margin-bottom: 1.25rem;
    line-height: 1.6;
    font-size: 0.9375rem;
}

.course-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9375rem;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
}

.course-link:hover {
    gap: 0.625rem;
    color: var(--primary-deep);
}

/* VSA Section */
.vsa-section {
    background: linear-gradient(135deg, var(--bg-light) 0%, #e0f2fe 100%);
    padding: 4.5rem 0;
}

.vsa-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.vsa-text h2 {
    font-size: clamp(1.5rem, 3vw, 2.25rem);
    font-weight: 800;
    margin-bottom: 1.25rem;
    color: var(--text-color);
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.vsa-text p {
    font-size: 1rem;
    color: var(--text-muted);
    margin-bottom: 1.75rem;
    line-height: 1.7;
}

.vsa-features {
    list-style: none;
    margin-bottom: 2rem;
}

.vsa-features li {
    padding: 0.625rem 0;
    font-size: 0.9375rem;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border-color);
}

.vsa-features li:last-child {
    border-bottom: none;
}

.vsa-visual {
    position: relative;
    height: 400px;
}

.ai-visualization {
    width: 100%;
    height: 100%;
    position: relative;
    background: linear-gradient(135deg, #0e7490 0%, #6366f1 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    box-shadow: var(--shadow-glow);
}

.neural-network {
    position: relative;
    width: 300px;
    height: 300px;
}

.node {
    position: absolute;
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    border: 3px solid var(--ai-cyan);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.5);
    animation: node-pulse 2s infinite;
}

.node:nth-child(1) {
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    animation-delay: 0s;
}

.node:nth-child(2) {
    top: 30%;
    left: 10%;
    animation-delay: 0.3s;
}

.node:nth-child(3) {
    top: 30%;
    right: 10%;
    animation-delay: 0.6s;
}

.node:nth-child(4) {
    bottom: 30%;
    left: 10%;
    animation-delay: 0.9s;
}

.node:nth-child(5) {
    bottom: 30%;
    right: 10%;
    animation-delay: 1.2s;
}

.node:nth-child(6) {
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    animation-delay: 1.5s;
}

@keyframes node-pulse {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 0 20px rgba(0, 212, 255, 0.5);
    }
    50% {
        transform: scale(1.1);
        box-shadow: 0 0 30px rgba(0, 212, 255, 0.8);
    }
}

/* CTA Section */
.cta-section {
    background: linear-gradient(180deg, #0c4a6e 0%, #0e7490 50%, #6366f1 100%);
    color: white;
    text-align: center;
    padding: 4.5rem 0;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
                      linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
    background-size: 48px 48px;
    pointer-events: none;
}

.cta-section h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    margin-bottom: 1rem;
    font-weight: 800;
    letter-spacing: -0.02em;
}

.cta-section p {
    font-size: clamp(1rem, 2vw, 1.2rem);
    margin-bottom: 2.5rem;
    opacity: 0.95;
}

/* Sticky CTA Bar - Pill style */
.sticky-cta-bar {
    position: fixed;
    bottom: 1rem;
    left: 50%;
    transform: translateX(-50%) translateY(120%);
    width: calc(100% - 2rem);
    max-width: 480px;
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(16px);
    color: white;
    padding: 0.75rem 1.25rem;
    z-index: 999;
    border-radius: var(--radius-full);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}
.sticky-cta-bar.visible {
    transform: translateX(-50%) translateY(0);
}
.sticky-cta-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}
.sticky-cta-text {
    font-weight: 600;
    font-size: 0.9375rem;
}
.sticky-cta-bar .btn {
    padding: 0.5rem 1.25rem;
    font-size: 0.875rem;
    flex-shrink: 0;
}

/* Exit-intent modal */
.exit-intent-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(4px);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}
.exit-intent-overlay.visible {
    opacity: 1;
    visibility: visible;
}
.exit-intent-content {
    background: white;
    padding: 2rem;
    border-radius: var(--radius-lg);
    max-width: 380px;
    position: relative;
    text-align: center;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
}
.exit-intent-close {
    position: absolute;
    top: 0.75rem;
    right: 1rem;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-muted);
    line-height: 1;
    transition: var(--transition);
}
.exit-intent-close:hover {
    color: var(--text-color);
}
.exit-intent-content h3 {
    margin-bottom: 0.75rem;
    font-size: 1.25rem;
    font-weight: 700;
}
.exit-intent-content p {
    margin-bottom: 1.5rem;
    color: var(--text-muted);
    font-size: 0.9375rem;
}

/* Footer - Dark slate */
.footer {
    background: linear-gradient(180deg, #0f172a 0%, #020617 100%);
    color: white;
    padding: 4rem 0 1.5rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 2.5rem;
    margin-bottom: 2.5rem;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 1.25rem;
    color: #a5f3fc;
    font-size: 0.9375rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.footer-section ul {
    list-style: none;
}

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

.footer-section a {
    color: rgba(255, 255, 255, 0.75);
    text-decoration: none;
    transition: var(--transition);
    font-size: 0.9375rem;
}

.footer-section a:hover {
    color: #a5f3fc;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.7);
}

/* Responsive Design */
@media (max-width: 968px) {
    .vsa-content {
        grid-template-columns: 1fr;
    }
    
    .vsa-visual {
        height: 300px;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: var(--shadow);
        padding: 2rem 0;
    }

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

    .nav-toggle {
        display: flex;
    }

    .hero-title {
        font-size: 2.25rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .features-grid,
    .courses-grid {
        grid-template-columns: 1fr;
    }

    .hero-cta {
        flex-direction: column;
    }

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

    .hero-stats {
        gap: 2rem;
    }

    .stat-number {
        font-size: 2.5rem;
    }

    .vsa-text h2 {
        font-size: 2rem;
    }

    .sticky-cta-bar {
        width: calc(100% - 1rem);
        max-width: none;
        padding: 0.625rem 1rem;
    }
    .sticky-cta-inner {
        flex-direction: column;
        gap: 0.5rem;
    }
    .sticky-cta-text {
        font-size: 0.875rem;
    }
}

/* Accessibility */
:focus-visible {
    outline: 3px solid var(--primary-color);
    outline-offset: 3px;
    border-radius: 4px;
}

/* Page Hero - AI theme */
.page-hero {
    background: linear-gradient(180deg, #0c4a6e 0%, #0e7490 50%, #6366f1 100%);
    color: white;
    padding: 3.5rem 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image: linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
                      linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
    background-size: 48px 48px;
    pointer-events: none;
}

.page-hero h1 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 800;
    margin-bottom: 0.75rem;
    letter-spacing: -0.02em;
}

.page-hero p {
    font-size: 1rem;
    opacity: 0.9;
}

/* Courses Detailed */
.courses-detailed {
    padding: 5rem 0;
}
.courses-intro {
    max-width: 720px;
    margin: 0 auto 2.5rem;
    font-size: 0.9375rem;
    color: var(--text-muted);
    line-height: 1.7;
}
.courses-intro a {
    color: var(--primary-color);
    font-weight: 600;
}

.course-detail-card {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2.25rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.course-detail-card:hover {
    border-color: rgba(14, 165, 233, 0.3);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.course-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.course-header h2 {
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-color);
}

.course-duration {
    background: var(--bg-gradient);
    color: white;
    padding: 0.5rem 1.5rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.875rem;
}

.course-description {
    font-size: 1.125rem;
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 2rem;
}

.course-topics {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 15px;
    margin-bottom: 2rem;
}

.course-topics h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.course-topics ul {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 0.75rem;
}

.course-topics li {
    padding: 0.5rem 0;
    color: var(--text-color);
    position: relative;
    padding-left: 1.5rem;
}

.course-topics li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

/* Blog Listing */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2.5rem;
    padding: 3rem 0;
}

.blog-card {
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.blog-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(14, 165, 233, 0.3);
}

.blog-card-image {
    width: 100%;
    height: 180px;
    background: linear-gradient(135deg, #0e7490 0%, #6366f1 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
}

.blog-card-content {
    padding: 1.5rem 1.75rem;
}

.blog-card-meta {
    display: flex;
    gap: 0.75rem;
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-bottom: 0.75rem;
}

.blog-card h3 {
    font-size: 1.2rem;
    margin-bottom: 0.75rem;
    color: var(--text-color);
    font-weight: 700;
}

.blog-card p {
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: 1.25rem;
    font-size: 0.9375rem;
}

.blog-card a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9375rem;
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    transition: var(--transition);
}

.blog-card a:hover {
    gap: 0.625rem;
    color: var(--primary-deep);
}

/* Blog Post */
.blog-post {
    max-width: 800px;
    margin: 0 auto;
    padding: 3rem 0;
}

.blog-post-header {
    text-align: center;
    margin-bottom: 3rem;
}

.blog-post-header h1 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.blog-post-meta {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    color: var(--text-light);
    margin-bottom: 2rem;
}

.blog-post-content {
    font-size: 1.125rem;
    line-height: 1.9;
    color: var(--text-color);
}

.blog-post-content h2 {
    font-size: 2rem;
    margin: 2.5rem 0 1.5rem;
    color: var(--text-color);
    font-weight: 700;
}

.blog-post-content h3 {
    font-size: 1.5rem;
    margin: 2rem 0 1rem;
    color: var(--text-color);
    font-weight: 700;
}

.blog-post-content p {
    margin-bottom: 1.5rem;
}

.blog-post-content ul,
.blog-post-content ol {
    margin: 1.5rem 0;
    padding-left: 2rem;
}

.blog-post-content li {
    margin-bottom: 0.75rem;
}

.blog-post-content a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
}

.blog-post-content a:hover {
    text-decoration: underline;
}

/* Contact Form */
.contact-section {
    padding: 5rem 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-info h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    color: var(--text-color);
}

.contact-info p {
    font-size: 1.125rem;
    color: var(--text-light);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.contact-details {
    list-style: none;
}

.contact-details li {
    padding: 1rem 0;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 1rem;
}

.contact-details li:last-child {
    border-bottom: none;
}

.contact-form {
    background: white;
    padding: 2.25rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.375rem;
    font-weight: 600;
    font-size: 0.9375rem;
    color: var(--text-color);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 0.9375rem;
    transition: var(--transition);
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.15);
}

.form-group textarea {
    resize: vertical;
    min-height: 140px;
}
.form-disclaimer {
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
    line-height: 1.5;
}

/* About Page */
.about-section {
    padding: 5rem 0;
}

.about-content {
    max-width: 900px;
    margin: 0 auto;
}

.about-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    color: var(--text-color);
}

.about-content p {
    font-size: 1.125rem;
    line-height: 1.9;
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin: 3rem 0;
}

.about-stat {
    text-align: center;
    padding: 2rem;
    background: var(--bg-light);
    border-radius: 15px;
}

.about-stat-number {
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.about-stat-label {
    font-size: 1.125rem;
    color: var(--text-color);
    font-weight: 600;
}

/* Print Styles */
@media print {
    .header,
    .footer,
    .btn,
    .ai-particles,
    .vsa-visual {
        display: none;
    }
}

@media (max-width: 768px) {
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .blog-grid {
        grid-template-columns: 1fr;
    }
    
    .blog-post-header h1 {
        font-size: 2rem;
    }
    
    .course-header {
        flex-direction: column;
        align-items: flex-start;
    }
}