:root {
  --bg: #0b0c10;
  --bg-alt: #111319;
  --surface: #16181f;
  --border: #262933;
  --text: #f3f3f5;
  --text-muted: #a3a7b3;
  --accent: #ff6a3d;
  --accent-text: #1a0900;
  --radius: 12px;
  --max-width: 1080px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(11, 12, 16, 0.85);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  padding-bottom: 16px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
  font-size: 16px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: none;
  border-radius: 999px;
  padding: 12px 22px;
  font-family: inherit;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.15s ease, opacity 0.15s ease;
}

.btn:active {
  transform: scale(0.97);
}

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

.btn-primary:hover {
  opacity: 0.92;
}

.btn-primary:disabled {
  opacity: 0.6;
  cursor: default;
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
  padding: 10px 20px;
}

.btn-ghost:hover {
  border-color: var(--accent);
}

.btn-spinner {
  display: none;
  width: 14px;
  height: 14px;
  border: 2px solid rgba(26, 9, 0, 0.35);
  border-top-color: var(--accent-text);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

.btn.is-loading .btn-spinner {
  display: inline-block;
}

.btn.is-loading .btn-label {
  opacity: 0.7;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* Hero */
.hero {
  padding: 96px 0 72px;
}

.hero-inner {
  max-width: 640px;
}

.eyebrow {
  color: var(--accent);
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin: 0 0 16px;
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.2rem);
  line-height: 1.1;
  margin: 0 0 20px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.hero-sub {
  color: var(--text-muted);
  font-size: 18px;
  margin: 0 0 32px;
}

/* Waitlist form */
.waitlist-form {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.waitlist-form input[type='email'] {
  flex: 1 1 260px;
  min-width: 0;
  padding: 13px 18px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-family: inherit;
  font-size: 15px;
}

.waitlist-form input[type='email']:focus {
  outline: none;
  border-color: var(--accent);
}

.waitlist-form input[aria-invalid='true'] {
  border-color: #ff5c5c;
}

.form-message {
  margin: 12px 0 0;
  font-size: 14px;
  min-height: 20px;
}

.form-message[data-state='success'] {
  color: #4ade80;
}

.form-message[data-state='error'] {
  color: #ff5c5c;
}

/* Sections */
.section {
  padding: 72px 0;
  border-top: 1px solid var(--border);
}

.section h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  margin: 0 0 40px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.section-alt {
  background: var(--bg-alt);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
}

.card h3 {
  margin: 0 0 10px;
  font-size: 18px;
}

.card p {
  margin: 0;
  color: var(--text-muted);
  font-size: 15px;
}

.waitlist-cta {
  max-width: 560px;
  text-align: left;
}

.waitlist-cta p {
  color: var(--text-muted);
  margin: 0 0 28px;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 28px 24px;
  color: var(--text-muted);
  font-size: 14px;
}

.footer-inner a {
  color: var(--text-muted);
  text-decoration: none;
}

.footer-inner a:hover {
  color: var(--text);
}

@media (max-width: 720px) {
  .grid-3 {
    grid-template-columns: 1fr;
  }

  .hero {
    padding: 64px 0 48px;
  }

  .footer-inner {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }
}