:root {
  color-scheme: light dark;
  --bg: #f5f5f5;
  --card-bg: #fff;
  --text: #1a1a1a;
  --muted: #6b6b6b;
  --border: #ddd;
  --accent: #2563eb;
  --danger: #b91c1c;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #16181d;
    --card-bg: #22252b;
    --text: #e8e8e8;
    --muted: #9a9a9a;
    --border: #383b42;
    --accent: #5b8def;
    --danger: #f87171;
  }
}

* { box-sizing: border-box; }

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

main {
  max-width: 640px;
  margin: 0 auto;
  padding: 12px 16px 60px;
}

.topnav {
  display: flex;
  gap: 4px;
  padding: 10px 12px;
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}

.topnav a {
  padding: 8px 10px;
  color: var(--text);
  text-decoration: none;
  border-radius: 6px;
  font-size: 0.95rem;
}

.topnav a:hover { background: var(--bg); }
.topnav .logout { margin-left: auto; color: var(--muted); }

h1 { font-size: 1.4rem; }
h2 { font-size: 1.1rem; margin-top: 0; }

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 16px;
  margin: 14px 0;
}

.card.centered {
  max-width: 320px;
  margin: 60px auto;
  text-align: center;
}

.day-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 8px;
}

.day-header h1 { margin: 0; }

.nav-arrow {
  font-size: 1.4rem;
  padding: 6px 14px;
  color: var(--text);
  text-decoration: none;
}

.today-badge {
  font-size: 0.7rem;
  background: var(--accent);
  color: #fff;
  padding: 2px 8px;
  border-radius: 999px;
  vertical-align: middle;
}

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

.entry-list { list-style: none; padding: 0; margin: 0; }
.entry-list.compact li { font-size: 0.9rem; padding: 4px 0; }

.entry {
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}
.entry:last-child { border-bottom: none; }

.entry-details {
  white-space: pre-wrap;
  font-family: inherit;
  color: var(--muted);
  margin: 4px 0;
  font-size: 0.9rem;
}

.entry-actions {
  display: flex;
  gap: 14px;
  margin-top: 4px;
}

.entry-actions a, .entry-actions form { display: inline; }

.link-button {
  background: none;
  border: none;
  padding: 0;
  color: var(--danger);
  text-decoration: underline;
  cursor: pointer;
  font-size: 0.95rem;
}

.quick-add-grid {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

details.quick-add {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 4px 12px;
}

details.quick-add summary {
  padding: 10px 0;
  font-weight: 600;
  cursor: pointer;
  font-size: 1.05rem;
}

form label {
  display: block;
  margin: 10px 0 4px;
  font-size: 0.9rem;
  color: var(--muted);
}

input[type="text"], input[type="number"], input[type="date"], input[type="password"], textarea {
  width: 100%;
  padding: 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  color: var(--text);
  font-size: 1rem;
  font-family: inherit;
}

label.checkbox {
  display: flex;
  align-items: center;
  gap: 8px;
}
label.checkbox input { width: auto; }

button[type="submit"], .card form button:not(.link-button) {
  margin-top: 12px;
  padding: 10px 18px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 6px;
  font-size: 1rem;
  cursor: pointer;
}

.history-day { margin-bottom: 12px; }
.history-day:last-child { margin-bottom: 0; }

.error { color: var(--danger); }