:root {
  --fg: #1a1a1a;
  --muted: #6b7280;
  --border: #e5e7eb;
  --accent: #1f6feb;
  --bg: #ffffff;
  --bg-soft: #f9fafb;
  --danger: #b42318;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--fg);
  background: var(--bg);
  line-height: 1.5;
}

.container { max-width: 960px; margin: 0 auto; padding: 1.5rem; }

.admin-nav {
  display: flex;
  gap: 1rem;
  align-items: center;
  padding: 0.75rem 1.5rem;
  border-bottom: 1px solid var(--border);
  background: var(--bg-soft);
}
.admin-nav a { color: var(--fg); text-decoration: none; font-weight: 500; }
.admin-nav a:hover { color: var(--accent); }
.admin-nav .spacer { flex: 1; }

h1 { font-size: 1.5rem; margin: 0 0 1rem; }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 0.5rem 0.75rem; border-bottom: 1px solid var(--border); }
th { font-size: 0.8rem; text-transform: uppercase; color: var(--muted); letter-spacing: 0.03em; }

label { display: block; font-weight: 500; margin: 0.75rem 0 0.25rem; }
input, select, textarea {
  width: 100%;
  padding: 0.5rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  font: inherit;
}
textarea { min-height: 6rem; }

.btn {
  display: inline-block;
  padding: 0.5rem 1rem;
  border: 1px solid var(--accent);
  border-radius: 6px;
  background: var(--accent);
  color: #fff;
  font: inherit;
  cursor: pointer;
  text-decoration: none;
}
.btn.secondary { background: #fff; color: var(--fg); border-color: var(--border); }
.btn.danger { background: var(--danger); border-color: var(--danger); }

.field-error { color: var(--danger); font-size: 0.85rem; margin-top: 0.25rem; }
.flash { padding: 0.75rem 1rem; border-radius: 6px; margin-bottom: 1rem; }
.flash.error { background: #fef3f2; color: var(--danger); }
.flash.success { background: #ecfdf3; color: #027a48; }

.card { border: 1px solid var(--border); border-radius: 8px; padding: 1.5rem; max-width: 420px; margin: 3rem auto; }
.muted { color: var(--muted); font-size: 0.9rem; }
code { background: var(--bg-soft); padding: 0.1rem 0.3rem; border-radius: 4px; }