:root {
    --bg-dark: #0f172a;
    --bg-card: #1e293b;
    --accent: #10b981;
    --accent-hover: #059669;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --font-heading: 'DM Sans', sans-serif;
    --font-body: 'Inter', sans-serif;
}

body {
    margin: 0;
    padding: 0;
    background: linear-gradient(135deg, #0a1628, #0f2027 70%, #0b3d2e);
    background-attachment: fixed;
    color: var(--text-main);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding-left: 24px;
    padding-right: 24px;
}

/* Premium Background Orbs */
.bg-orbs-container {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    overflow: hidden;
    z-index: -1;
    pointer-events: none;
}

.bg-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(140px);
    opacity: 0.55;
}

.orb-1 { top: -10%; left: -10%; width: 50vw; height: 50vw; background: rgba(16, 185, 129, 0.12); }
.orb-2 { top: 40%; right: -10%; width: 40vw; height: 40vw; background: rgba(59, 130, 246, 0.10); }
.orb-3 { bottom: -20%; left: 20%; width: 60vw; height: 60vw; background: rgba(16, 185, 129, 0.08); }

/* Navbar */
.landing-nav {
    position: fixed;
    top: 20px;
    left: 0;
    right: 0;
    width: 100%;
    z-index: 1000;
    background: transparent;
    border: none;
    padding: 0 24px;
    box-sizing: border-box;
}

.nav-container {
    max-width: 1150px;
    margin: 0 auto;
    background: linear-gradient(135deg, rgba(10, 22, 40, 0.75), rgba(15, 32, 39, 0.85));
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-bottom: 1px solid rgba(16, 185, 129, 0.2);
    border-radius: 50px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 64px;
    padding: 0 24px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--text-main);
}

.brand-text {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
}

.brand-text .accent {
    color: var(--accent);
}

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

.nav-links a {
    color: var(--text-main);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

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

.btn {
    display: inline-block;
    padding: 0 24px;
    height: 46px;
    border-radius: 10px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn-primary {
    background-color: var(--accent);
    color: white;
    border: none;
}

.btn-primary:hover {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(16, 185, 129, 0.25);
}

.btn-outline {
    background-color: transparent;
    color: var(--text-main);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

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

.btn-login {
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--accent);
    border: 1px solid rgba(16, 185, 129, 0.2);
    height: 38px;
    border-radius: 50px;
    padding: 0 20px;
}

.btn-login:hover {
    background-color: rgba(16, 185, 129, 0.2);
    transform: translateY(-1px);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    flex-direction: column;
    gap: 6px;
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background-color: var(--text-main);
    transition: 0.3s;
}

.mobile-nav {
    display: none;
    flex-direction: column;
    background: var(--bg-card);
    padding: 20px;
    gap: 16px;
}

.mobile-nav.active {
    display: flex;
}

@media (max-width: 768px) {
    .nav-links { display: none; }
    .mobile-menu-btn { display: flex; }
}

/* Sections */
section {
    padding: 0;
}

.hero-section {
    padding-top: 220px;
    padding-bottom: 80px;
}

.stats-section {
    padding-top: 80px;
    padding-bottom: 80px;
}

.partners-section {
    padding-top: 60px;
    padding-bottom: 40px;
}

.why-academyos-section {
    padding-top: 80px;
    padding-bottom: 80px;
}

.features-section {
    padding-top: 80px;
    padding-bottom: 80px;
}

.how-it-works-section {
    padding-top: 80px;
    padding-bottom: 80px;
}

.screenshots-section {
    padding-top: 80px;
    padding-bottom: 80px;
}

.pricing-section {
    padding-top: 80px;
    padding-bottom: 80px;
}

.faq-section {
    padding-top: 80px;
    padding-bottom: 80px;
}

.section-title {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 16px;
}

.section-subtitle {
    text-align: center;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 60px;
    font-size: 1.1rem;
}

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

.hero-glass-card {
    background: rgba(255, 255, 255, 0.02);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 24px;
    padding: 48px 40px;
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.2), inset 0 0 40px rgba(255, 255, 255, 0.02);
}

.hero-content h1 {
    font-family: var(--font-heading);
    font-size: 3.2rem;
    line-height: 1.2;
    margin-bottom: 24px;
}

.hero-content p {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: 40px;
}

.hero-buttons {
    display: flex;
    gap: 20px;
}

.hero-visual {
    perspective: 1000px;
}

.hero-mockup {
    box-shadow: 0 30px 60px -12px rgba(0, 0, 0, 0.6), 0 0 60px rgba(16, 185, 129, 0.2);
    transform: rotateY(-8deg) rotateX(4deg) scale(1.02);
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    border-radius: 12px;
}

.hero-mockup:hover {
    transform: rotateY(0deg) rotateX(0deg) scale(1.05);
}

@media (max-width: 992px) {
    .hero-section {
        padding-top: 160px;
        padding-bottom: 50px;
    }
    .hero {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .hero-buttons {
        justify-content: center;
    }
}

/* Section Eyebrow */
.section-eyebrow {
    color: var(--accent);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    font-size: 0.85rem;
    display: block;
    margin-bottom: 12px;
    text-align: center;
}

/* Marquee Styles */
.marquee-container {
    width: 100%;
    overflow: hidden;
    position: relative;
    padding: 20px 0;
    margin-top: 20px;
    mask-image: linear-gradient(to right, transparent, black 15%, black 85%, transparent);
    -webkit-mask-image: linear-gradient(to right, transparent, black 15%, black 85%, transparent);
}

.marquee-content {
    display: inline-flex;
    gap: 24px;
    padding-left: 24px;
    animation: marquee 30s linear infinite;
}

.marquee-content:hover {
    animation-play-state: paused;
}

@keyframes marquee {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* Dynamic Content Grids */
.features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 24px; }
.why-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 32px; }
.screenshots-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 32px; }
.pricing-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 24px; margin-bottom: 48px; }
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 24px; }

/* Premium Glass Cards Base */
.feature-card, .why-card, .step-card, .screenshot-card, .pricing-card, .faq-item, .partner-card, .stat-item {
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.06);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    overflow: hidden;
}

.feature-card::before, .why-card::before, .pricing-card::before, .partner-card::before, .stat-item::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.05) 0%, transparent 100%);
    z-index: 0;
    pointer-events: none;
}
.feature-card > *, .why-card > *, .pricing-card > *, .partner-card > *, .stat-item > * { position: relative; z-index: 1; }

.pricing-card { padding: 32px; text-align: center; }
.pricing-card:hover, .why-card:hover, .feature-card:hover, .partner-card:hover, .stat-item:hover, .step-card:hover { 
    transform: translateY(-6px); 
    border-color: rgba(16, 185, 129, 0.3);
    box-shadow: 0 12px 40px rgba(16, 185, 129, 0.15);
}

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

.why-card { padding: 32px; display: flex; flex-direction: column; align-items: flex-start; text-align: left; transition: transform 0.3s, border-color 0.3s; }
.why-card:hover { border-color: var(--accent); }
.why-card h3 { margin: 16px 0 8px 0; font-family: var(--font-heading); font-size: 1.25rem; }
.why-card p { margin: 0; color: var(--text-muted); line-height: 1.5; }

.feature-card { padding: 24px; display: flex; align-items: center; gap: 16px; transition: transform 0.3s, border-color 0.3s; }
.feature-card:hover { border-color: var(--accent); }
.feature-icon { width: 48px; height: 48px; background: rgba(16, 185, 129, 0.1); color: var(--accent); border-radius: 8px; display: flex; align-items: center; justify-content: center; font-size: 1.5rem; }
.feature-card h4 { margin: 0; font-family: var(--font-heading); font-size: 1.1rem; }

.steps-container { display: flex; flex-direction: column; gap: 24px; max-width: 800px; margin: 0 auto; }
.step-card { display: flex; align-items: center; gap: 24px; padding: 24px 32px; }
.step-number { width: 40px; height: 40px; background: var(--accent); color: white; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; font-size: 1.2rem; flex-shrink: 0; }
.step-card h4 { margin: 0; font-family: var(--font-heading); font-size: 1.25rem; }

.screenshot-card { background: transparent; transition: transform 0.3s; }
.screenshot-card:hover { transform: translateY(-5px); }
.screenshot-card h4 { margin: 16px 0 0; text-align: center; font-family: var(--font-heading); }
.screenshot-browser {
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid rgba(255,255,255,0.1);
    background: rgba(30, 41, 59, 0.4);
    backdrop-filter: blur(12px);
}
.browser-header {
    background: rgba(15, 23, 42, 0.8);
    padding: 10px 16px;
    display: flex;
    gap: 8px;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}
.browser-header .dot { width: 12px; height: 12px; border-radius: 50%; }
.dot.red { background: #ef4444; }
.dot.yellow { background: #eab308; }
.dot.green { background: #22c55e; }
.screenshot-placeholder {
    width: 100%;
    aspect-ratio: 16/9;
    background: linear-gradient(135deg, rgba(30,41,59,0.5), rgba(15,23,42,0.8));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-weight: 500;
}

.pricing-card h3 { margin-top: 0; color: var(--accent); font-family: var(--font-heading); }
.pricing-card .price { font-size: 2rem; font-weight: 700; margin: 16px 0; }
.pricing-card.popular {
    border-color: rgba(16, 185, 129, 0.5);
    box-shadow: 0 0 30px rgba(16, 185, 129, 0.15);
    transform: scale(1.05);
    z-index: 2;
}
.pricing-card.popular:hover { transform: scale(1.05) translateY(-5px); }
.popular-badge {
    position: absolute;
    top: 0; right: 0;
    background: var(--accent);
    color: white;
    padding: 4px 12px;
    font-size: 0.75rem;
    font-weight: bold;
    border-bottom-left-radius: 12px;
}

/* Stats & Partners */
.stat-item { padding: 24px 20px; text-align: center; }
.stat-item h4 { font-family: var(--font-heading); font-size: 2.5rem; color: var(--accent); margin: 0 0 8px 0; text-shadow: 0 0 15px rgba(16, 185, 129, 0.3); }
.stat-item p { margin: 0; color: var(--text-muted); font-weight: 500; text-transform: uppercase; letter-spacing: 1px; font-size: 0.85rem; }
.partner-card { min-width: 250px; padding: 24px 32px; text-align: center; display: flex; align-items: center; justify-content: center; gap: 16px; white-space: nowrap; }
.partner-logo-placeholder { width: 40px; height: 40px; border-radius: 8px; background: rgba(255,255,255,0.1); flex-shrink: 0; }
.partner-card h3 { margin: 0; color: rgba(255,255,255,0.8); font-family: var(--font-heading); }

.faq-container { max-width: 800px; margin: 0 auto; }
.faq-item { margin-bottom: 16px; overflow: hidden; }
.faq-question { padding: 20px; cursor: pointer; font-weight: 600; display: flex; justify-content: space-between; align-items: center; user-select: none; }
.faq-answer { padding: 0 20px 20px; color: var(--text-muted); display: none; }
.faq-item.active .faq-answer { display: block; }

.cta-section { background: transparent; text-align: center; padding-top: 70px; padding-bottom: 70px; border-top: 1px solid rgba(255, 255, 255, 0.05); }
.cta-buttons { display: flex; justify-content: center; gap: 16px; margin-top: 32px; }

footer { background: transparent; padding-top: 70px; padding-bottom: 40px; border-top: 1px solid rgba(255, 255, 255, 0.05); }
.footer-content { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 40px; margin-bottom: 40px; }
.footer-brand h2 { margin: 0 0 16px; font-family: var(--font-heading); }
.footer-links { display: flex; gap: 32px; }
.footer-links a { color: var(--text-muted); text-decoration: none; transition: color 0.3s; }
.footer-links a:hover { color: var(--accent); }
.footer-bottom { text-align: center; color: var(--text-muted); padding-top: 30px; border-top: 1px solid rgba(255, 255, 255, 0.05); }