:root {
  --bg: #e6ebee;
  --surface: #ffffff;
  --ink: #1c2a33;
  --muted: #5a6b76;
  --line: #cfd8de;
  --accent: #0d6d73;
  --accent-ink: #ffffff;
  --danger: #b3261e;
  --key-shadow: #b9c5cc;
  --radius: 14px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141b20;
    --surface: #1e282f;
    --ink: #e3e9ed;
    --muted: #93a3ad;
    --line: #2f3c45;
    --accent: #4fb2b4;
    --accent-ink: #0d1a1d;
    --danger: #f2a49e;
    --key-shadow: #0b1014;
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.5 "Bricolage Grotesque", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  min-height: 100vh;
}
.wrap { max-width: 1080px; margin: 0 auto; padding: 48px 24px 64px; }
h1 { font-size: clamp(2rem, 5vw, 3rem); line-height: 1.05; letter-spacing: -0.02em; margin: 0; font-weight: 700; }
a { color: var(--accent); }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }

button, .btn {
  font: inherit; cursor: pointer; border-radius: 10px; border: 1px solid var(--line);
  background: var(--surface); color: var(--ink); padding: 9px 16px; text-decoration: none;
  display: inline-flex; align-items: center; gap: 6px;
}
button.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); font-weight: 600; }
button.danger { color: var(--danger); }
button:disabled { opacity: .5; cursor: default; }

input {
  font: inherit; color: var(--ink); background: var(--surface);
  border: 1px solid var(--line); border-radius: 8px; padding: 9px 11px; width: 100%; min-width: 0;
}
input:focus { outline: 2px solid var(--accent); outline-offset: 0; border-color: var(--accent); }
.muted { color: var(--muted); }