:root {
  --bg: #ffffff;
  --fg: #16181d;
  --muted: #5b6270;
  --accent: #4f46e5;
  --accent-fg: #ffffff;
  --border: #e6e7eb;
  --field-bg: #f7f7f9;
  --success: #157a4a;
  --error: #b3261e;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115;
    --fg: #edeef1;
    --muted: #9aa1ac;
    --accent: #8280ff;
    --accent-fg: #0f1115;
    --border: #2a2d34;
    --field-bg: #1a1c22;
    --success: #4ade95;
    --error: #ff8a80;
  }
}

* { box-sizing: border-box; }

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

body {
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 24px;
}

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

/* Header */

.site-header {
  border-bottom: 1px solid var(--border);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.wordmark {
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
}

.site-header nav a {
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--fg);
}

.site-header nav a:hover { color: var(--accent); }

/* Hero */

.hero {
  padding: 96px 0 88px;
  text-align: center;
}

.hero h1 {
  font-size: clamp(2.25rem, 5vw, 3.25rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0 0 24px;
}

.hero .blurb {
  font-size: 1.15rem;
  color: var(--muted);
  max-width: 620px;
  margin: 0 auto 40px;
}

.cta {
  display: inline-block;
  background: var(--accent);
  color: var(--accent-fg);
  text-decoration: none;
  font-weight: 600;
  padding: 14px 32px;
  border-radius: 8px;
  transition: opacity 0.15s ease;
}

.cta:hover { opacity: 0.88; }

/* Contact */

.contact {
  padding: 72px 0 96px;
  border-top: 1px solid var(--border);
}

.contact h2 {
  font-size: 1.75rem;
  font-weight: 700;
  margin: 0 0 8px;
  text-align: center;
}

.contact-sub {
  color: var(--muted);
  text-align: center;
  margin: 0 0 40px;
}

form {
  max-width: 480px;
  margin: 0 auto;
}

.field {
  margin-bottom: 20px;
}

label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 6px;
}

input, textarea {
  width: 100%;
  background: var(--field-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 14px;
  font-size: 1rem;
  font-family: inherit;
  color: var(--fg);
}

input:focus, textarea:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

textarea { resize: vertical; }

button[type="submit"] {
  width: 100%;
  background: var(--accent);
  color: var(--accent-fg);
  border: none;
  border-radius: 8px;
  padding: 14px;
  font-size: 1rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: opacity 0.15s ease;
}

button[type="submit"]:hover { opacity: 0.88; }
button[type="submit"]:disabled { opacity: 0.6; cursor: not-allowed; }

#form-status {
  min-height: 1.2em;
  margin: 14px 0 0;
  font-size: 0.9rem;
  text-align: center;
}

#form-status[data-state="success"] { color: var(--success); }
#form-status[data-state="error"] { color: var(--error); }

/* Footer */

.site-footer {
  border-top: 1px solid var(--border);
  padding: 28px 0;
}

.site-footer .wrap {
  color: var(--muted);
  font-size: 0.875rem;
  text-align: center;
}