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

:root {
    --primary: #00D4FF;
    --primary-dark: #0099BB;
    --dark: #0A0A0F;
    --dark-2: #111118;
    --glass: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --text: #FFFFFF;
    --text-muted: rgba(255, 255, 255, 0.6);
}

body {
    font-family: 'Segoe UI', system-ui, sans-serif;
    background: var(--dark);
    color: var(--text);
    overflow-x: hidden;
}

/* VIDEO BACKGROUND */
.video-container {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    z-index: -1;
}

#bg-video {
    width: 100%; height: 100%;
    object-fit: cover;
    object-position: center center;
}

.overlay {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: linear-gradient(135deg,
        rgba(10,10,15,0.85) 0%,
        rgba(0,212,255,0.1) 50%,
        rgba(10,10,15,0.90) 100%
    );
}

/* NAVIGATION */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 16px 60px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 100;
    background: rgba(10,10,15,0.3);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
}

.logo {
    font-size: 22px;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: 1px;
}

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

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s;
}

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

/* Hamburger */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 4px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: all 0.3s;
}

/* BUTTONS */
.btn-primary {
    background: var(--primary);
    color: #000;
    padding: 10px 24px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 14px;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
    display: inline-block;
}

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

.btn-primary.large {
    padding: 16px 36px;
    font-size: 16px;
    border-radius: 10px;
}

.btn-outline {
    border: 1px solid var(--glass-border);
    color: var(--text);
    padding: 10px 24px;
    border-radius: 8px;
    text-decoration: none;
    font-size: 14px;
    transition: all 0.3s;
    background: transparent;
    cursor: pointer;
}

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

.btn-ghost {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 16px;
    padding: 16px 36px;
    border-radius: 10px;
    border: 1px solid var(--glass-border);
    transition: all 0.3s;
}

.btn-ghost:hover {
    color: var(--text);
    border-color: var(--text-muted);
}

/* HERO */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 60px 60px;
}

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

.badge {
    display: inline-block;
    background: rgba(0,212,255,0.1);
    border: 1px solid rgba(0,212,255,0.3);
    color: var(--primary);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 24px;
}

.hero-content h1 {
    font-size: 64px;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
    background: linear-gradient(135deg, #fff 0%, var(--primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-content p {
    font-size: 18px;
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 40px;
    max-width: 560px;
}

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

.hero-stats {
    display: flex;
    align-items: center;
    gap: 32px;
    padding: 24px 32px;
    background: var(--glass);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    backdrop-filter: blur(10px);
    width: fit-content;
    flex-wrap: wrap;
}

.stat { display: flex; flex-direction: column; gap: 4px; }
.stat-number { font-size: 28px; font-weight: 800; color: var(--primary); }
.stat-label { font-size: 12px; color: var(--text-muted); max-width: 120px; line-height: 1.4; }
.divider-v { width: 1px; height: 40px; background: var(--glass-border); }

/* FEATURES */
.features {
    padding: 100px 60px;
    background: rgba(10,10,15,0.7);
    backdrop-filter: blur(10px);
}

.features h2 {
    font-size: 42px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 60px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    max-width: 1200px;
    margin: 0 auto;
}

.feature-card {
    background: var(--glass);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 32px 24px;
    transition: all 0.3s;
}

.feature-card:hover {
    border-color: var(--primary);
    transform: translateY(-4px);
    background: rgba(0,212,255,0.05);
}

.feature-icon { font-size: 36px; margin-bottom: 16px; }
.feature-card h3 { font-size: 18px; font-weight: 600; margin-bottom: 12px; }
.feature-card p { font-size: 14px; color: var(--text-muted); line-height: 1.6; }

/* CTA */
.cta {
    padding: 100px 60px;
    text-align: center;
    background: linear-gradient(135deg, rgba(0,212,255,0.05), rgba(10,10,15,0.9));
}

.cta h2 { font-size: 42px; font-weight: 700; margin-bottom: 16px; }
.cta p { font-size: 18px; color: var(--text-muted); margin-bottom: 40px; }

/* FOOTER */
footer {
    padding: 32px 60px;
    border-top: 1px solid var(--glass-border);
    background: rgba(10,10,15,0.9);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-muted);
    font-size: 14px;
    flex-wrap: wrap;
    gap: 12px;
}

/* ═══════════════════════════════════════════════════════════
   RESPONSIVE — MOBILE FIRST
═══════════════════════════════════════════════════════════ */

@media (max-width: 1024px) {
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    nav { padding: 16px 24px; }
    .hero { padding: 100px 24px 60px; }
    .features, .cta { padding: 80px 24px; }
    footer { padding: 24px; }
}

@media (max-width: 768px) {
    /* Nav */
    nav { padding: 14px 20px; }
    .nav-toggle { display: flex; }
    .nav-links {
        display: none;
        position: fixed;
        top: 60px; left: 0;
        width: 100%;
        background: rgba(10,10,15,0.97);
        flex-direction: column;
        padding: 24px 20px;
        gap: 16px;
        border-bottom: 1px solid var(--glass-border);
        z-index: 99;
    }
    .nav-links.open { display: flex; }
    .nav-links a { font-size: 16px; padding: 8px 0; }

    /* Hero */
    .hero { padding: 90px 20px 48px; }
    .hero-content h1 { font-size: 36px; }
    .hero-content p { font-size: 15px; }
    .hero-buttons { flex-direction: column; gap: 12px; }
    .hero-buttons a, .hero-buttons button { width: 100%; text-align: center; }
    .hero-stats { flex-direction: column; gap: 16px; padding: 20px; }
    .divider-v { width: 100%; height: 1px; }

    /* Features */
    .features { padding: 60px 20px; }
    .features h2 { font-size: 28px; margin-bottom: 32px; }
    .features-grid { grid-template-columns: 1fr; gap: 16px; }

    /* CTA */
    .cta { padding: 60px 20px; }
    .cta h2 { font-size: 28px; }
    .cta p { font-size: 15px; }

    footer { padding: 20px; }
    .footer-content { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
    .hero-content h1 { font-size: 30px; }
    .badge { font-size: 11px; }
    .btn-primary.large, .btn-ghost { padding: 14px 24px; font-size: 15px; }
}