/* Tiffin landing page. One accent, muted cyan. Change --accent to reskin. */

:root {
  --bg: #0b0b0c;
  --text: #ededed;
  --muted: #8b9096;
  --accent: #5fb3c7;
  --accent-ink: #06222a;
  --line: #1e2124;
  --focus: #8fd3e2;

  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", "Cascadia Code", "Cascadia Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

main {
  max-width: 640px;
  margin: 0 auto;
  padding: 12vh 24px 16vh;
}

/* Masthead */

.wordmark {
  font-family: var(--mono);
  font-size: 1.9rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--text);
}

.wordmark::before {
  content: "";
  display: inline-block;
  width: 0.5em;
  height: 0.5em;
  margin-right: 0.5em;
  border-radius: 2px;
  background: var(--accent);
  vertical-align: 0.08em;
}

.tagline {
  margin: 1.1rem 0 0;
  font-size: 1.35rem;
  line-height: 1.35;
  font-weight: 500;
  max-width: 32ch;
}

.status {
  margin: 1.4rem 0 0;
  color: var(--muted);
  font-size: 1rem;
  max-width: 52ch;
}

/* Thesis */

.thesis {
  margin-top: 4.5rem;
  border-top: 1px solid var(--line);
}

.block {
  padding: 2.2rem 0;
  border-bottom: 1px solid var(--line);
}

.block h2,
.signup h2 {
  margin: 0 0 0.7rem;
  font-family: var(--mono);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}

.block p {
  margin: 0;
  color: var(--text);
  max-width: 58ch;
}

/* Signup */

.signup {
  margin-top: 4.5rem;
}

.signup-form {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0 0 0.9rem;
}

.signup-form input {
  flex: 1 1 240px;
  min-width: 0;
  padding: 12px 14px;
  background: #101215;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--text);
  font: inherit;
}

.signup-form input::placeholder { color: #5c6166; }

.signup-form input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(95, 179, 199, 0.25);
}

.signup-form button {
  flex: 0 0 auto;
  padding: 12px 22px;
  background: var(--accent);
  color: var(--accent-ink);
  border: 1px solid var(--accent);
  border-radius: 6px;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}

.signup-form button:hover { background: var(--focus); border-color: var(--focus); }

.signup-form button:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

.fine {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.contact {
  margin: 1.6rem 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid rgba(95, 179, 199, 0.4);
}

a:hover { border-bottom-color: var(--accent); }

a:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

/* Accessibility helper */

.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;
}

@media (max-width: 480px) {
  body { font-size: 16px; }
  main { padding: 8vh 20px 12vh; }
  .tagline { font-size: 1.2rem; }
}