:root {
    --primary-blue: #007AFF;
    --deep-bg: #0a0a0a;
    --card-bg: #1a1a1a;
    --text-main: #ffffff;
    --text-muted: #888888;
    --accent-gradient: linear-gradient(135deg, #007AFF 0%, #00C6FF 100%);
    --font-stack: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

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

body {
    background-color: var(--deep-bg);
    color: var(--text-main);
    font-family: var(--font-stack);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Typography & Utilities */
h1, h2, h3 { font-weight: 700; letter-spacing: -0.5px; }
a { text-decoration: none; color: inherit; transition: 0.3s; }
.container { max-width: 1200px; margin: 0 auto; padding: 4rem 2rem; }
.section-title { font-size: 2.5rem; text-align: center; margin-bottom: 3rem; background: var(--accent-gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 2rem; }
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 2rem; }

/* Header */
.glass-header {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
}

.logo { font-size: 1.5rem; font-weight: 800; letter-spacing: 2px; }
.nav-links { list-style: none; display: flex; gap: 2rem; }
.nav-links a:hover { color: var(--primary-blue); }

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: radial-gradient(circle at center, #1a1a2e 0%, #000000 100%);
}

.hero h1 { font-size: 5rem; line-height: 1.1; margin-bottom: 1rem; }
.hero p { font-size: 1.5rem; color: var(--text-muted); margin-bottom: 2rem; }

.btn {
    padding: 1rem 2.5rem;
    border-radius: 50px;
    font-weight: 600;
    display: inline-block;
    margin: 0 10px;
}

.primary { background: var(--accent-gradient); color: white; box-shadow: 0 4px 15px rgba(0, 122, 255, 0.3); }
.secondary { border: 1px solid rgba(255,255,255,0.3); background: rgba(255,255,255,0.05); }
.primary:hover { transform: translateY(-2px); box-shadow: 0 8px 25px rgba(0, 122, 255, 0.5); }
.secondary:hover { background: rgba(255,255,255,0.1); }

/* Video */
.video-wrapper {
    position: relative;
    padding-bottom: 56.25%; /* 16:9 */
    height: 0;
    overflow: hidden;
    border-radius: 12px;
    border: 1px solid rgba(255,255,255,0.1);
}
.video-wrapper iframe { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }

/* Cards (Features, Team, Reviews) */
.card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 16px;
    border: 1px solid rgba(255,255,255,0.05);
    transition: 0.3s;
}
.card:hover { transform: translateY(-5px); border-color: var(--primary-blue); }
.card h3 { margin-bottom: 1rem; font-size: 1.25rem; }
.card p { color: var(--text-muted); font-size: 0.95rem; }

/* Versions - Tabs + Plan Cards */
.version-wrapper { width: 100%; }
.version-shell {
    background: rgba(255,255,255,0.02);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 20px;
    padding: 1rem;
}

.version-tabs {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.75rem;
}

.version-tab {
    text-align: left;
    border: 1px solid rgba(255,255,255,0.10);
    background: rgba(255,255,255,0.03);
    border-radius: 16px;
    padding: 1rem 1.25rem;
    cursor: pointer;
    transition: 0.25s;
    color: var(--text-main);
}

.version-tab:hover { border-color: rgba(0, 122, 255, 0.55); background: rgba(0, 122, 255, 0.06); }
.version-tab.active {
    border-color: rgba(0, 122, 255, 0.8);
    box-shadow: 0 10px 40px rgba(0, 122, 255, 0.12);
    background: rgba(0, 122, 255, 0.10);
}

.version-tab-title { display: block; font-weight: 800; letter-spacing: 0.2px; }
.version-tab-sub { display: block; margin-top: 0.25rem; color: var(--text-muted); font-size: 0.95rem; }

.version-panel {
    margin-top: 1rem;
    border-radius: 16px;
    border: 1px solid rgba(255,255,255,0.08);
    background: rgba(0,0,0,0.15);
    padding: 1.25rem;
}

.version-panel-head {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1.25rem;
}

.version-panel-title h3 { margin: 0; font-size: 1.5rem; }
.version-panel-title p { margin-top: 0.35rem; color: var(--text-muted); }

.version-panel-meta { display: flex; gap: 0.5rem; flex-wrap: wrap; justify-content: flex-end; }
.chip {
    padding: 0.35rem 0.7rem;
    border-radius: 999px;
    font-size: 0.85rem;
    border: 1px solid rgba(255,255,255,0.10);
    background: rgba(255,255,255,0.03);
    color: rgba(255,255,255,0.92);
}

.plan-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.plan-card {
    border-radius: 16px;
    border: 1px solid rgba(255,255,255,0.10);
    background: rgba(255,255,255,0.03);
    padding: 1.25rem;
    transition: 0.25s;
}
.plan-card:hover { transform: translateY(-3px); border-color: rgba(255,255,255,0.18); }
.plan-card--premium { border-color: rgba(0, 122, 255, 0.35); background: rgba(0, 122, 255, 0.06); }

.plan-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 1rem; margin-bottom: 1rem; }
.plan-name { font-size: 1.1rem; font-weight: 900; letter-spacing: 0.2px; }
.plan-price { margin-top: 0.25rem; font-size: 1.35rem; font-weight: 900; color: var(--primary-blue); }

.plan-badge {
    padding: 0.35rem 0.65rem;
    border-radius: 10px;
    font-weight: 800;
    font-size: 0.8rem;
    background: rgba(0, 122, 255, 0.18);
    border: 1px solid rgba(0, 122, 255, 0.35);
}

.plan-badge--free {
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.12);
}

.feature-list { padding: 0; margin: 0 0 1rem 0; }
.feature-list li { margin-bottom: 0.5rem; color: var(--text-muted); list-style: none; display: flex; align-items: center; }
.feature-list li::before { content: "✓"; color: var(--primary-blue); margin-right: 10px; }

.plan-actions { display: flex; gap: 0.75rem; flex-wrap: wrap; }

.btn-small {
    padding: 0.75rem 1.1rem;
    border-radius: 12px;
    margin: 0;
    font-size: 0.95rem;
}

/* Team & Reviews Specifics */
.avatar { width: 60px; height: 60px; background: #333; border-radius: 50%; margin-bottom: 1rem; overflow: hidden; display: flex; align-items: center; justify-content: center; }
.avatar-img { width: 100%; height: 100%; object-fit: cover; display: block; }
.review-text { font-style: italic; margin-bottom: 1.5rem; }
.review-author { font-weight: bold; color: var(--primary-blue); }

/* Responsive */
@media (max-width: 768px) {
    .hero h1 { font-size: 3rem; }
    .nav-links { display: none; } /* Simplified for mobile MVP */
    .version-tabs { grid-template-columns: 1fr; }
    .plan-grid { grid-template-columns: 1fr; }
}