:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --fg: #1a1a1a;
  --muted: #6b7280;
  --border: #e2e2e2;
  --accent: #2563eb;
  --danger: #b91c1c;
  --ok: #15803d;
  --card-bg: #f9fafb;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14161a;
    --fg: #e6e6e6;
    --muted: #9aa1ac;
    --border: #2a2d33;
    --accent: #6ea8fe;
    --card-bg: #1c1f24;
  }
}

* { box-sizing: border-box; }

body {
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--fg);
  margin: 0;
  line-height: 1.4;
}

header.topbar {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 0.75rem 1.25rem;
  border-bottom: 1px solid var(--border);
}

header.topbar a {
  color: var(--fg);
  text-decoration: none;
  font-weight: 500;
}

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

header.topbar .brand { font-weight: 700; margin-right: 1rem; }

main {
  max-width: 960px;
  margin: 0 auto;
  padding: 1.25rem;
}

h1, h2, h3 { line-height: 1.2; }

.flash-error {
  border: 1px solid var(--danger);
  color: var(--danger);
  background: color-mix(in srgb, var(--danger) 10%, transparent);
  border-radius: 8px;
  padding: 0.6rem 0.9rem;
  margin-bottom: 1rem;
}

.dashboard {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.stat {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.75rem;
  background: var(--card-bg);
}

.stat .value { font-size: 1.4rem; font-weight: 700; }
.stat .label { color: var(--muted); font-size: 0.85rem; }

.day-card {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.9rem 1rem;
  margin-bottom: 0.9rem;
  background: var(--card-bg);
}

.day-card.unavailable { opacity: 0.6; }

.day-card .day-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.day-card .day-header h3 { margin: 0; }

.day-stats { color: var(--muted); font-size: 0.9rem; }
.day-stats .over { color: var(--danger); font-weight: 600; }

ul.block-list { list-style: none; padding: 0; margin: 0.5rem 0; }

ul.block-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0;
  border-top: 1px solid var(--border);
  flex-wrap: wrap;
}

.badge {
  display: inline-block;
  font-size: 0.75rem;
  padding: 0.1rem 0.45rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--muted);
}

.badge.locked { color: var(--accent); border-color: var(--accent); }

form.inline { display: inline; }

form.availability-form {
  display: flex;
  gap: 0.4rem;
  align-items: center;
  margin-top: 0.5rem;
  flex-wrap: wrap;
}

input, select, textarea {
  font: inherit;
  padding: 0.35rem 0.5rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  color: var(--fg);
}

button, .button {
  font: inherit;
  padding: 0.35rem 0.8rem;
  border-radius: 6px;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #fff;
  cursor: pointer;
}

button.secondary {
  background: transparent;
  color: var(--fg);
  border-color: var(--border);
}

button.danger { background: var(--danger); border-color: var(--danger); }

.card {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem;
  margin-bottom: 1rem;
  background: var(--card-bg);
}

table { border-collapse: collapse; width: 100%; }
th, td { text-align: left; padding: 0.4rem 0.5rem; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; font-size: 0.85rem; }

a.task-link { color: var(--fg); text-decoration: none; font-weight: 500; }
a.task-link:hover { color: var(--accent); }

.muted { color: var(--muted); }

.field-row { display: flex; gap: 0.75rem; flex-wrap: wrap; margin-bottom: 0.6rem; }
.field-row label { display: flex; flex-direction: column; gap: 0.2rem; font-size: 0.85rem; color: var(--muted); }

nav.tabs { display: flex; gap: 1rem; margin-bottom: 1rem; border-bottom: 1px solid var(--border); }
nav.tabs a { padding: 0.4rem 0; color: var(--muted); text-decoration: none; }
nav.tabs a.active { color: var(--fg); border-bottom: 2px solid var(--accent); }