/* Colours and type in one place. Ask your AI helper to change these to your own. */
:root {
  --accent: #2f5d8a;
  --paper: #f6f6f4;
  --surface: #ffffff;
  --ink: #1b1e20;
  --muted: #58636b;
  --line: #d5d9da;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --accent: #8ab4dc;
    --paper: #14181b;
    --surface: #1f262b;
    --ink: #e8ecee;
    --muted: #a3aeb5;
    --line: #34424b;
  }
}

*, *::before, *::after { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 1.0625rem/1.55 var(--sans);
}

h1, h2 {
  font-weight: 600;
  line-height: 1.2;
  margin: 0 0 0.5rem;
}
h1 { font-size: clamp(1.75rem, 5vw, 2.4rem); }
h2 { font-size: 1.35rem; }

a { color: inherit; text-decoration-color: var(--accent); text-underline-offset: 0.2em; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }

.page {
  max-width: 38rem;
  margin: 0 auto;
  padding: 3rem 1.25rem;
}
.quiet { color: var(--muted); font-size: 0.95rem; }

/* Forms */
form { display: grid; gap: 0.75rem; }
fieldset { border: 0; margin: 0; padding: 0; }
legend { padding: 0; margin-bottom: 0.5rem; }
input[type="text"], input[type="email"], input[type="number"], select, textarea {
  width: 100%;
  font: inherit;
  color: inherit;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 0.6rem 0.75rem;
}
button {
  justify-self: start;
  font: inherit;
  font-weight: 600;
  color: var(--paper);
  background: var(--accent);
  border: 0;
  border-radius: 4px;
  padding: 0.7rem 1.25rem;
  cursor: pointer;
}
button:disabled { opacity: 0.6; cursor: default; }