/* HandpanGuru Admin Portal — plain CSS, no build step, no framework.
   Deliberately looks like an internal CMS, not the public app
   (HG-022 ticket section 26). */

:root {
  --bg: #f4f5f7;
  --surface: #ffffff;
  --border: #dfe3e8;
  --text: #1f2430;
  --text-muted: #6b7280;
  --primary: #2f5d8a;
  --primary-hover: #244a6e;
  --danger: #b3261e;
  --danger-bg: #fdecea;
  --warn: #8a5a00;
  --warn-bg: #fff6e0;
  --ok: #1b7a3d;
  --ok-bg: #e8f6ec;
  --radius: 6px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.5;
}

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

header.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

header.topbar .brand { font-weight: 600; font-size: 15px; }

nav.main-nav { display: flex; gap: 4px; }
nav.main-nav a {
  padding: 8px 12px;
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--text);
  font-weight: 500;
}
nav.main-nav a.active, nav.main-nav a:hover { background: var(--bg); }

main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px 20px 60px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 16px;
}

h1 { font-size: 20px; margin: 0 0 16px; }
h2 { font-size: 16px; margin: 0 0 12px; }

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 12px;
}
.stat-tile {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  text-align: center;
}
.stat-tile .value { font-size: 26px; font-weight: 700; }
.stat-tile .label { color: var(--text-muted); font-size: 12px; text-transform: uppercase; letter-spacing: .03em; }

.filters { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 16px; }
.filters input, .filters select {
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 14px;
}
.filters input[type="text"] { flex: 1; min-width: 200px; }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { font-size: 12px; text-transform: uppercase; letter-spacing: .03em; color: var(--text-muted); }
tr.clickable { cursor: pointer; }
tr.clickable:hover { background: var(--bg); }

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}
.badge-pending { background: var(--warn-bg); color: var(--warn); }
.badge-approved, .badge-corrected { background: var(--ok-bg); color: var(--ok); }
.badge-rejected, .badge-outdated { background: var(--danger-bg); color: var(--danger); }
.badge-canonical { background: #e6edff; color: #2b3a8f; margin-left: 4px; }

/* Turn review_status badges (HG-027.5.2) — same warn/in-progress/ok
   language as the knowledge-status badges above, not a new palette. */
.badge-unreviewed { background: var(--warn-bg); color: var(--warn); }
.badge-in_progress { background: #e6edff; color: #2b3a8f; }
.badge-resolved_with_entry { background: var(--ok-bg); color: var(--ok); }
.badge-resolved_no_change { background: var(--bg); color: var(--text-muted); }
.badge-ignored { background: var(--danger-bg); color: var(--danger); }

.pagination { display: flex; gap: 8px; align-items: center; margin-top: 12px; }

button, .btn {
  display: inline-block;
  padding: 8px 14px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
  cursor: pointer;
  font-size: 14px;
  color: var(--text);
}
button.primary { background: var(--primary); border-color: var(--primary); color: #fff; }
button.primary:hover { background: var(--primary-hover); }
button.danger { background: var(--danger-bg); border-color: var(--danger); color: var(--danger); }
button:disabled { opacity: .5; cursor: not-allowed; }

label { display: block; font-weight: 600; margin: 12px 0 4px; }
input[type="text"], input[type="email"], input[type="url"], textarea, select {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 14px;
  font-family: inherit;
}
textarea { resize: vertical; min-height: 100px; }
.field-hint { color: var(--text-muted); font-size: 12px; margin-top: 2px; }

.banner { padding: 10px 14px; border-radius: var(--radius); margin-bottom: 16px; font-size: 14px; }
.banner-error { background: var(--danger-bg); color: var(--danger); }
.banner-warn { background: var(--warn-bg); color: var(--warn); }
.banner-ok { background: var(--ok-bg); color: var(--ok); }

.login-shell { max-width: 360px; margin: 80px auto; }

.audit-row { padding: 8px 0; border-bottom: 1px solid var(--border); font-size: 13px; }
.audit-row .meta { color: var(--text-muted); }

@media (max-width: 640px) {
  main { padding: 16px 12px 40px; }
  header.topbar { flex-direction: column; align-items: flex-start; gap: 8px; }
  nav.main-nav { flex-wrap: wrap; }
}