/* resonant4music.ai — Dark theme */

:root {
    --bg: #0a0a0f;
    --bg-card: #12121a;
    --bg-hover: #1a1a28;
    --text: #e8e8f0;
    --text-dim: #8888a0;
    --accent: #6c5ce7;
    --accent-glow: rgba(108, 92, 231, 0.3);
    --accent2: #00cec9;
    --border: #2a2a3a;
    --radius: 12px;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
}

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

html { scroll-behavior: smooth; }

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

a { color: var(--accent2); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---- Layout ---- */

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ---- Nav ---- */

nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    background: rgba(10, 10, 15, 0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    padding: 16px 0;
}

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

.logo {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

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

nav ul {
    list-style: none;
    display: flex;
    gap: 32px;
}

nav ul a {
    color: var(--text-dim);
    font-size: 0.9rem;
    transition: color 0.2s;
}

nav ul a:hover { color: var(--text); text-decoration: none; }

/* ---- Hero ---- */

.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 120px 24px 80px;
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    top: 20%; left: 50%;
    transform: translate(-50%, -50%);
    width: 600px; height: 600px;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
    pointer-events: none;
}

.hero h1 {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin-bottom: 24px;
    position: relative;
}

.hero h1 em {
    font-style: normal;
    background: linear-gradient(135deg, var(--accent), var(--accent2));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-dim);
    max-width: 600px;
    margin-bottom: 40px;
    position: relative;
}

/* ---- Buttons ---- */

.btn {
    display: inline-block;
    padding: 14px 32px;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-primary {
    background: var(--accent);
    color: #fff;
}

.btn-primary:hover {
    background: #7c6cf7;
    box-shadow: 0 0 30px var(--accent-glow);
    text-decoration: none;
}

.btn-secondary {
    background: transparent;
    color: var(--text);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    border-color: var(--accent);
    text-decoration: none;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    position: relative;
}

/* ---- Sections ---- */

section {
    padding: 100px 0;
}

section h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

section .subtitle {
    color: var(--text-dim);
    font-size: 1.1rem;
    margin-bottom: 48px;
    max-width: 600px;
}

/* ---- Feature Grid ---- */

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    transition: all 0.2s;
}

.feature-card:hover {
    border-color: var(--accent);
    background: var(--bg-hover);
}

.feature-card .icon {
    font-size: 2rem;
    margin-bottom: 16px;
}

.feature-card h3 {
    font-size: 1.2rem;
    margin-bottom: 8px;
}

.feature-card p {
    color: var(--text-dim);
    font-size: 0.95rem;
}

/* ---- API Preview ---- */

.code-block {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    overflow-x: auto;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    line-height: 1.7;
    color: var(--text-dim);
}

.code-block .keyword { color: var(--accent); }
.code-block .string { color: var(--accent2); }
.code-block .comment { color: #555570; }

/* ---- Waitlist ---- */

.waitlist {
    text-align: center;
    padding: 100px 0;
}

.waitlist-form {
    display: flex;
    gap: 12px;
    max-width: 480px;
    margin: 0 auto;
}

.waitlist-form input {
    flex: 1;
    padding: 14px 20px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--bg-card);
    color: var(--text);
    font-size: 1rem;
    font-family: var(--font);
    outline: none;
    transition: border-color 0.2s;
}

.waitlist-form input:focus {
    border-color: var(--accent);
}

.waitlist-form input::placeholder {
    color: var(--text-dim);
}

.waitlist-msg {
    margin-top: 16px;
    font-size: 0.9rem;
    color: var(--accent2);
    min-height: 1.5em;
}

/* ---- Footer ---- */

footer {
    border-top: 1px solid var(--border);
    padding: 40px 0;
    text-align: center;
    color: var(--text-dim);
    font-size: 0.85rem;
}

/* ---- Responsive ---- */

@media (max-width: 640px) {
    .hero-buttons { flex-direction: column; }
    .waitlist-form { flex-direction: column; }
    nav ul { gap: 16px; }
}