:root {
  color-scheme: light dark;
  --fg: #10182B;
  --bg: #ffffff;
  --muted: #565F7A;
  --accent: #10297B;
  --gold: #96730A;
  --border: #dddddd;
  --danger: #b3261e;
}

@media (prefers-color-scheme: dark) {
  :root {
    --fg: #E9ECF7;
    --bg: #10182F;
    --muted: #9AA3C4;
    --accent: #8DA0F5;
    --gold: #E3BB55;
    --border: #33363b;
    --danger: #ff6b64;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  color: var(--fg);
  background: var(--bg);
  line-height: 1.6;
}

.site-header {
  border-bottom: 2px solid var(--gold);
  padding: 1rem 1.5rem;
}

.site-nav { display: flex; align-items: center; gap: 1.5rem; flex-wrap: wrap; }
.site-nav .brand { color: var(--fg); text-decoration: none; font-weight: 700; }

.site-main {
  max-width: 900px;
  margin: 0 auto;
  padding: 1.5rem;
}

a { color: var(--accent); }

.site-tabs { display: flex; gap: 0.5rem; flex-wrap: wrap; margin-bottom: 1.5rem; }
.site-tab {
  padding: 0.4rem 0.85rem;
  border: 1px solid var(--border);
  border-radius: 100px;
  text-decoration: none;
  color: var(--muted);
  font-size: 0.9rem;
}
.site-tab-active { background: var(--accent); color: #fff; border-color: var(--accent); }

.post-meta { color: var(--muted); font-size: 0.9rem; margin-top: -0.5rem; }

.pager { display: flex; justify-content: space-between; margin-top: 2rem; }

.stack-form { display: flex; flex-direction: column; gap: 1rem; max-width: 360px; }
.stack-form label { display: flex; flex-direction: column; gap: 0.35rem; font-weight: 600; }
.stack-form input[type="text"],
.stack-form input[type="password"] {
  font: inherit;
  padding: 0.5rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--bg);
  color: var(--fg);
}

button, .link-button {
  font: inherit;
  padding: 0.5rem 1rem;
  border-radius: 4px;
  border: 1px solid var(--border);
  background: var(--accent);
  color: #fff;
  cursor: pointer;
  width: fit-content;
}

.link-button { background: none; color: var(--accent); border: none; padding: 0; text-decoration: underline; }

.inline-form { display: inline-block; margin: 0; }

.admin-table { width: 100%; border-collapse: collapse; margin-top: 1.5rem; }
.admin-table th, .admin-table td {
  text-align: left;
  padding: 0.5rem;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
.admin-table th { color: var(--muted); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.03em; }

.table-scroll { overflow-x: auto; }

.chart-container { position: relative; width: 100%; height: 260px; margin-top: 1rem; }

.alert { color: var(--danger); font-weight: 600; }
.empty { color: var(--muted); }
code { background: rgba(128,128,128,0.15); padding: 0.1rem 0.3rem; border-radius: 3px; }