:root {
    --bg-dark: #0a0a0c;
    --acc-primary: #6366f1;
    --acc-secondary: #a855f7;
    --text-main: #f8fafc;
    --text-dim: #94a3b8;
    --glass: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.08);
}

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

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, .logo {
    font-family: 'Outfit', sans-serif;
}

/* ── Navigation ───────────────────────────────────────────────────────────── */
header {
    padding: 2rem 5%;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    background: linear-gradient(to bottom, rgba(10, 10, 12, 0.9), transparent);
    backdrop-filter: blur(10px);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
}

.logo {
    font-size: 1.8rem;
    font-weight: 800;
    letter-spacing: -1px;
}

.logo span {
    color: var(--acc-primary);
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

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

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

/* ── Hero Section ──────────────────────────────────────────────────────────── */
.hero {
    padding: 10rem 5% 5rem;
    display: flex;
    gap: 4rem;
    align-items: center;
    min-height: 100vh;
    max-width: 1400px;
    margin: 0 auto;
}

.hero-content {
    flex: 1;
}

.hero-visual {
    flex: 1.2;
    position: relative;
    display: flex;
    justify-content: center;
}

h1 {
    font-size: 4.5rem;
    line-height: 1.1;
    margin-bottom: 2rem;
    font-weight: 800;
}

.gradient-text {
    background: linear-gradient(135deg, #fff 30%, var(--acc-primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-dim);
    max-width: 500px;
    margin-bottom: 3rem;
}

.hero-actions {
    display: flex;
    gap: 1.5rem;
}

.main-visual {
    width: 100%;
    max-width: 800px;
    border-radius: 24px;
    box-shadow: 0 40px 100px rgba(0,0,0,0.8);
    border: 1px solid var(--glass-border);
    position: relative;
    z-index: 2;
}

.glow-sphere {
    position: absolute;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.15), transparent 70%);
    filter: blur(40px);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 1;
}

/* ── Buttons ───────────────────────────────────────────────────────────────── */
.btn-primary, .btn-primary-large {
    background: var(--acc-primary);
    color: white;
    padding: 0.8rem 1.8rem;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 600;
    transition: transform 0.3s, box-shadow 0.3s;
}

.btn-primary-large {
    padding: 1.2rem 2.5rem;
    font-size: 1.1rem;
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover, .btn-primary-large:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 40px rgba(99, 102, 241, 0.4);
}

.btn-outline {
    border: 1px solid var(--glass-border);
    color: var(--text-main);
    padding: 1.2rem 2.5rem;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 600;
    backdrop-filter: blur(10px);
    background: var(--glass);
    transition: background 0.3s;
}

.btn-outline:hover {
    background: rgba(255,255,255,0.08);
}

/* ── Features ─────────────────────────────────────────────────────────────── */
.features {
    padding: 8rem 5%;
    max-width: 1400px;
    margin: 0 auto;
    text-align: center;
}

.section-tag {
    color: var(--acc-primary);
    text-transform: uppercase;
    font-size: 0.9rem;
    font-weight: 700;
    letter-spacing: 2px;
    margin-bottom: 1rem;
}

h2 {
    font-size: 3rem;
    margin-bottom: 4rem;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.feature-card {
    background: var(--glass);
    border: 1px solid var(--glass-border);
    padding: 3rem 2rem;
    border-radius: 24px;
    text-align: left;
    transition: border 0.3s;
}

.feature-card:hover {
    border-color: var(--acc-primary);
}

.feature-card .icon {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.feature-card h3 {
    margin-bottom: 1rem;
}

.feature-card p {
    color: var(--text-dim);
}

/* ── Footer ───────────────────────────────────────────────────────────────── */
footer {
    padding: 5rem 5%;
    text-align: center;
    border-top: 1px solid var(--glass-border);
    color: var(--text-dim);
}

/* ── Responsive ───────────────────────────────────────────────────────────── */
@media (max-width: 1024px) {
    .hero {
        flex-direction: column;
        text-align: center;
        padding-top: 8rem;
    }
    .hero-content {
        margin-bottom: 4rem;
    }
    h1 {
        font-size: 3.5rem;
    }
    .feature-grid {
        grid-template-columns: 1fr;
    }
}