:root {
    --bg-primary: #030712;
    --bg-card: #0f172a;
    --bg-card-hover: #1e293b;
    --border-color: #1e293b;
    --border-accent: #3b82f6;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent-blue: #3b82f6;
    --accent-indigo: #6366f1;
    --accent-emerald: #10b981;
    --accent-rose: #f43f5e;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.mono {
    font-family: 'JetBrains Mono', monospace;
}

/* Header & Nav */
header {
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: blur(12px);
    background: rgba(3, 7, 18, 0.85);
    border-bottom: 1px solid var(--border-color);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
    font-weight: 900;
    letter-spacing: -0.025em;
    color: #fff;
    text-decoration: none;
}

.logo-badge {
    width: 2rem;
    height: 2rem;
    background: var(--accent-blue);
    border-radius: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 900;
    font-size: 0.875rem;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
    list-style: none;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    transition: color 0.2s;
}

.nav-links a:hover {
    color: #fff;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: 0.75rem;
    text-decoration: none;
    transition: all 0.2s;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--accent-blue);
    color: #fff;
    box-shadow: 0 10px 25px -5px rgba(59, 130, 246, 0.4);
}

.btn-primary:hover {
    background: #2563eb;
    transform: translateY(-1px);
}

.btn-secondary {
    background: #1e293b;
    color: var(--text-primary);
    border: 1px solid #334155;
}

.btn-secondary:hover {
    background: #334155;
}

/* Hero Section */
.hero {
    max-width: 1200px;
    margin: 0 auto;
    padding: 5rem 1.5rem 4rem;
    text-align: center;
}

.hero-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.375rem 1rem;
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.3);
    border-radius: 9999px;
    color: #93c5fd;
    font-size: 0.8125rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 900;
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin-bottom: 1.25rem;
}

.hero-gradient {
    background: linear-gradient(135deg, #60a5fa 0%, #a5b4fc 50%, #ffffff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto 2.5rem;
}

.hero-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 4rem;
}

/* Interactive Demo HUD */
.demo-card {
    background: var(--bg-card);
    border: 2px solid #3b82f688;
    border-radius: 1.5rem;
    padding: 2rem;
    text-align: left;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.6);
    margin-bottom: 5rem;
}

.demo-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 1.5rem;
}

.score-strip {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 2rem;
    align-items: center;
    background: var(--bg-primary);
    padding: 1.5rem;
    border-radius: 1rem;
    border: 1px solid var(--border-color);
    margin-bottom: 1.5rem;
}

.interactive-box {
    margin-top: 1.5rem;
}

.stat-input-field {
    width: 100%;
    padding: 1rem 1.25rem;
    background: var(--bg-primary);
    border: 2px solid var(--accent-blue);
    border-radius: 0.75rem;
    color: #fff;
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.125rem;
    outline: none;
}

/* Features Grid */
.section-title {
    text-align: center;
    margin-bottom: 3.5rem;
}

.section-title h2 {
    font-size: 2.25rem;
    font-weight: 800;
    margin-bottom: 0.75rem;
}

.section-title p {
    color: var(--text-secondary);
}

.features-grid {
    max-width: 1200px;
    margin: 0 auto 6rem;
    padding: 0 1.5rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.feature-box {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 1.25rem;
    padding: 2rem;
    transition: transform 0.2s, border-color 0.2s;
}

.feature-box:hover {
    transform: translateY(-4px);
    border-color: #3b82f6;
}

.feature-icon {
    width: 3rem;
    height: 3rem;
    border-radius: 0.75rem;
    background: rgba(59, 130, 246, 0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-blue);
    margin-bottom: 1.25rem;
}

.feature-box h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.feature-box p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
}

/* Pricing Grid */
.pricing-grid {
    max-width: 1200px;
    margin: 0 auto 6rem;
    padding: 0 1.5rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.pricing-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 1.5rem;
    padding: 2.5rem 2rem;
    display: flex;
    flex-col;
    justify-content: space-between;
}

.pricing-card.featured {
    border-color: var(--accent-blue);
    background: linear-gradient(180deg, #1e293b 0%, #0f172a 100%);
}

.price {
    font-size: 3rem;
    font-weight: 900;
    margin: 1.5rem 0;
}

.price span {
    font-size: 1rem;
    font-weight: 400;
    color: var(--text-secondary);
}

/* Footer */
footer {
    border-top: 1px solid var(--border-color);
    padding: 4rem 1.5rem 2rem;
    background: var(--bg-primary);
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-col h4 {
    font-size: 0.875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
    color: #fff;
}

.footer-col ul {
    list-style: none;
    space-y: 0.5rem;
}

.footer-col ul li {
    margin-bottom: 0.5rem;
}

.footer-col a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color 0.2s;
}

.footer-col a:hover {
    color: #fff;
}

.footer-bottom {
    max-width: 1200px;
    margin: 0 auto;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    font-size: 0.8125rem;
    color: var(--text-secondary);
}