/* RevenueAgent.ai Branding - Multi-Tier Design System */

:root {
    --primary: #1e293b;
    --secondary: #64748b;
    --accent-teal: #64ffda;
    --accent-cyan: #00b4d8;
    --accent-red: #ff6b6b;
    --bg-light: #f8fafc;
    --card-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.3);
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', system-ui, -apple-system, sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-light);
    color: var(--primary);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* Typography Overrides */
h1, h2, h3 { font-family: var(--font-heading); color: var(--primary); letter-spacing: -0.02em; }

/* Sticky Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--glass-border);
    z-index: 1000;
    padding: 16px 0;
}

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

.nav-logo {
    font-weight: 700;
    font-size: 1.25rem;
    color: #111;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 8px;
}

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

.nav-links a {
    text-decoration: none;
    color: var(--secondary);
    font-weight: 500;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

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

.btn-launch {
    background: #111;
    color: #fff !important;
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 0.85rem !important;
    transition: transform 0.3s ease, box-shadow 0.3s ease !important;
}

.btn-launch:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

/* Hero Section */
.hero {
    padding: 160px 0 100px;
    text-align: center;
    background: radial-gradient(circle at 50% -20%, rgba(100, 255, 218, 0.05), transparent 70%);
}

.hero-tag {
    display: inline-block;
    background: rgba(100, 255, 218, 0.1);
    color: #2db496;
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.7rem;
    padding: 4px 12px;
    border-radius: 20px;
    margin-bottom: 24px;
    letter-spacing: 1px;
}

.hero h1 {
    font-size: 4rem;
    line-height: 1.1;
    margin-bottom: 24px;
    background: linear-gradient(135deg, #111 0%, #444 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 1.25rem;
    color: var(--secondary);
    max-width: 650px;
    margin: 0 auto 40px;
}

/* Visualization Cards */
.promo-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-top: 60px;
}

.promo-card {
    background: var(--card-bg);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    overflow: hidden;
    transition: transform 0.4s ease;
    box-shadow: 0 20px 40px rgba(0,0,0,0.05);
}

.promo-card:hover { transform: translateY(-8px); }

.promo-img {
    width: 100%;
    height: 300px;
    object-fit: cover;
}

.promo-info { padding: 32px; }
.promo-info h3 { margin-bottom: 12px; font-size: 1.5rem; }
.promo-info p { font-size: 0.95rem; color: var(--secondary); }

/* How It Works Section */
.how-it-works {
    padding: 100px 0;
    background: #fff;
}

.section-label {
    text-align: center;
    text-transform: uppercase;
    color: var(--accent-teal);
    letter-spacing: 2px;
    font-size: 0.8rem;
    font-weight: 800;
    margin-bottom: 12px;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 60px;
}

.how-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 48px;
}

.step-card {
    text-align: left;
    position: relative;
}

.step-icon {
    width: 48px;
    height: 48px;
    background: #111;
    color: #fff;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    margin-bottom: 24px;
}

.step-card h4 { margin-bottom: 12px; }
.step-card p { font-size: 0.9rem; color: var(--secondary); }

/* Feature Pillars */
.pillars {
    padding: 100px 0;
}

.pillar-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.pillar-item {
    background: white;
    padding: 40px;
    border-radius: 20px;
    border: 1px solid rgba(0,0,0,0.05);
    transition: border-color 0.3s ease;
}

.pillar-item:hover {
    border-color: var(--accent-teal);
}

.pillar-item h4 { margin-bottom: 16px; font-size: 1.25rem; display: flex; align-items: center; gap: 8px; }
.pillar-item p { font-size: 0.9rem; color: var(--secondary); margin-bottom: 16px; }

.pillar-list {
    list-style: none;
    font-size: 0.85rem;
    color: var(--primary);
}

.pillar-list li {
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.pillar-list li::before {
    content: "→";
    color: var(--accent-teal);
    font-weight: 800;
}

/* Footer & CTA */
.final-cta {
    padding: 120px 0;
    background: #000;
    color: #fff;
    text-align: center;
}

.final-cta h2 { color: #fff; font-size: 3rem; margin-bottom: 24px; }
.final-cta p { max-width: 600px; margin: 0 auto 40px; opacity: 0.7; }

.btn-primary-large {
    padding: 16px 40px;
    background: var(--accent-teal);
    color: #000;
    text-decoration: none;
    font-weight: 700;
    border-radius: 50px;
    display: inline-block;
    transition: transform 0.3s ease;
}

.btn-primary-large:hover { transform: scale(1.05); }

footer {
    padding: 60px 0;
    text-align: center;
    font-size: 0.8rem;
    color: var(--secondary);
    border-top: 1px solid rgba(0,0,0,0.05);
}

@media (max-width: 900px) {
    .hero h1 { font-size: 2.5rem; }
    .promo-grid, .how-grid, .pillar-grid { grid-template-columns: 1fr; }
}