:root {
  --bg: #f4f5f7;
  --surface: #ffffff;
  --text: #1c2430;
  --muted: #5d6877;
  --line: #dde1e7;
  --accent: #0b5cad;
  --accent-soft: #e6f0fa;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12161c;
    --surface: #1a2029;
    --text: #e6e9ee;
    --muted: #9aa4b2;
    --line: #2a323d;
    --accent: #5aa2ec;
    --accent-soft: #1c2b3c;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
}
.wrap { max-width: 1040px; margin: 0 auto; padding: 0 16px; }
.top { background: var(--surface); border-bottom: 1px solid var(--line); padding: 40px 0 32px; }
.brand {
  display: inline-block; font-weight: 700; font-size: 13px; letter-spacing: .08em;
  color: var(--accent); background: var(--accent-soft); padding: 2px 8px; border-radius: 4px;
}
h1 { margin: 12px 0 4px; font-size: 32px; line-height: 1.2; }
.sub { margin: 0; color: var(--muted); }
.section { font-size: 14px; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); margin: 32px 0 12px; }
.grid {
  list-style: none; margin: 0; padding: 0;
  display: grid; gap: 16px; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
}
.tile {
  display: flex; flex-direction: column; gap: 6px; height: 100%;
  padding: 20px; border-radius: 10px; background: var(--surface);
  border: 1px solid var(--line); color: inherit; text-decoration: none;
}
.tile .name { font-weight: 600; font-size: 18px; }
.tile .desc { color: var(--muted); font-size: 14px; flex: 1; }
.tile.active { border-color: var(--accent); }
.tile.active:hover, .tile.active:focus-visible { background: var(--accent-soft); outline: none; }
.tile .go { color: var(--accent); font-weight: 600; font-size: 14px; }
.tile.soon { opacity: .6; }
.tile .tag { font-size: 12px; color: var(--muted); }
.foot { color: var(--muted); font-size: 13px; padding-top: 40px; padding-bottom: 32px; }

/* Navigation */
.nav { background: var(--surface); border-bottom: 1px solid var(--line); }
.nav .wrap { display: flex; align-items: center; gap: 16px; min-height: 52px; flex-wrap: wrap; }
.nav a { color: var(--text); text-decoration: none; font-size: 14px; }
.nav a:hover, .nav a.current { color: var(--accent); }
.nav .spacer { flex: 1; }
.nav .user { color: var(--muted); font-size: 14px; }
.nav form { margin: 0; }
.link-button {
  background: none; border: 0; padding: 0; font: inherit; font-size: 14px;
  color: var(--accent); cursor: pointer;
}
.top.small { padding: 28px 0 24px; }
a.back { color: var(--accent); }

/* Formulare */
.card {
  max-width: 400px; margin: 48px auto; padding: 28px;
  background: var(--surface); border: 1px solid var(--line); border-radius: 10px;
}
.card h1 { font-size: 24px; margin-top: 8px; }
.field { display: flex; flex-direction: column; gap: 4px; margin: 16px 0; }
.field label { font-size: 14px; color: var(--muted); }
.field input {
  font: inherit; padding: 8px 10px; border-radius: 6px;
  border: 1px solid var(--line); background: var(--bg); color: var(--text);
}
.field input:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
.button {
  font: inherit; font-weight: 600; padding: 9px 16px; border-radius: 6px; border: 0;
  background: var(--accent); color: #fff; cursor: pointer; width: 100%;
}
.errors { color: #c0392b; font-size: 14px; margin: 12px 0 0; padding: 0; list-style: none; }
@media (prefers-color-scheme: dark) { .errors { color: #ff8a80; } }