:root {
  color-scheme: light dark;
  --bg: #0d1117;
  --panel: #161b22;
  --text: #e6edf3;
  --muted: #9da7b3;
  --accent: #ffb347;
  --accent-contrast: #1b1200;
  --border: #30363d;
  --danger: #ff7b72;
  --ok: #3fb950;
  font-family:
    system-ui,
    -apple-system,
    "Segoe UI",
    Roboto,
    "Helvetica Neue",
    Arial,
    sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  min-height: 100dvh;
  background: radial-gradient(circle at top, #1b2533 0%, var(--bg) 55%);
  color: var(--text);
  line-height: 1.6;
}

a {
  color: var(--accent);
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  padding: 0.75rem 1rem;
  background: var(--accent);
  color: var(--accent-contrast);
  z-index: 10;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
}

.site-header,
main,
.site-footer {
  width: min(100% - 2rem, 960px);
  margin-inline: auto;
}

.site-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.25rem 0;
}

.brand {
  font-weight: 800;
  font-size: 1.35rem;
  letter-spacing: 0.02em;
  color: var(--text);
  text-decoration: none;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
}

.site-nav a {
  color: var(--muted);
  text-decoration: none;
  padding: 0.4rem 0;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--text);
}

.lang-switch {
  display: inline-flex;
  border: 1px solid var(--border);
  border-radius: 999px;
  overflow: hidden;
}

.lang-switch button {
  min-width: 44px;
  min-height: 44px;
  padding: 0.4rem 0.75rem;
  background: transparent;
  color: var(--muted);
  border: 0;
  font: inherit;
  cursor: pointer;
}

.lang-switch button[aria-pressed="true"] {
  background: var(--accent);
  color: var(--accent-contrast);
  font-weight: 700;
}

.banner {
  width: min(100% - 2rem, 960px);
  margin: 0.5rem auto 0;
  padding: 0.9rem 1rem;
  border-radius: 0.75rem;
  border: 1px solid var(--border);
  background: var(--panel);
}

.banner.ok {
  border-color: var(--ok);
}

.banner.error {
  border-color: var(--danger);
}

.hero {
  padding: 2.5rem 0 1.5rem;
}

.eyebrow {
  margin: 0 0 0.5rem;
  color: var(--accent);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.8rem;
}

h1 {
  margin: 0;
  font-size: clamp(2rem, 6vw, 3.5rem);
  line-height: 1.1;
}

h2 {
  margin-top: 0;
}

.lead {
  max-width: 46rem;
  color: var(--muted);
  font-size: 1.1rem;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: clamp(1.25rem, 4vw, 2rem);
  margin: 1.25rem 0;
}

.waitlist-form label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
}

.form-row {
  display: flex;
  gap: 0.75rem;
}

.form-row input {
  flex: 1 1 auto;
  min-width: 0;
  min-height: 48px;
  padding: 0.75rem 1rem;
  border-radius: 0.6rem;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font: inherit;
}

.form-row button {
  min-height: 48px;
  padding: 0.75rem 1.25rem;
  border-radius: 0.6rem;
  border: 0;
  background: var(--accent);
  color: var(--accent-contrast);
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

.form-row button:disabled {
  opacity: 0.6;
  cursor: default;
}

.hint {
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 0;
}

.form-message {
  margin: 0.75rem 0 0;
  min-height: 1.5rem;
}

.form-message.ok {
  color: var(--ok);
}

.form-message.error {
  color: var(--danger);
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 2rem 0 3rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.footer-links {
  display: flex;
  gap: 1rem;
}

@media (max-width: 640px) {
  .form-row {
    flex-direction: column;
  }

  .form-row button {
    width: 100%;
  }

  .site-nav {
    gap: 0.75rem;
  }

  .site-footer {
    flex-direction: column;
  }
}