:root {
  --bg: #fafaf9;
  --surface: #ffffff;
  --surface-2: #f5f5f4;
  --border: #e7e5e4;
  --border-strong: #d6d3d1;
  --text: #1c1917;
  --text-muted: #57534e;
  --text-faint: #78716c;
  --accent: #0f172a;
  --accent-hover: #1e293b;
  --good: #166534;
  --good-bg: #f0fdf4;
  --warn: #92400e;
  --warn-bg: #fffbeb;
  --bad: #991b1b;
  --bad-bg: #fef2f2;
  --info: #1e40af;
  --info-bg: #eff6ff;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --shadow: 0 4px 12px rgba(0,0,0,0.04), 0 1px 3px rgba(0,0,0,0.06);
  --radius: 10px;
  --radius-sm: 6px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------- LOGIN ---------- */
.login-shell {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(180deg, #fafaf9 0%, #f5f5f4 100%);
  padding: 24px;
}
.login-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 40px 36px;
  width: 100%;
  max-width: 420px;
  box-shadow: var(--shadow);
}
.login-brand {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 8px;
}
.login-title {
  font-size: 22px;
  font-weight: 600;
  margin: 0 0 4px;
  letter-spacing: -0.01em;
}
.login-sub {
  color: var(--text-muted);
  font-size: 14px;
  margin-bottom: 28px;
}
.login-form label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 6px;
  color: var(--text-muted);
}
.login-form input {
  width: 100%;
  padding: 11px 13px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  font-size: 14px;
  background: var(--surface);
  color: var(--text);
  margin-bottom: 16px;
  font-family: inherit;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.login-form input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(15, 23, 42, 0.08);
}
.login-form button {
  width: 100%;
  padding: 11px;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  margin-top: 4px;
  transition: background 0.15s;
}
.login-form button:hover { background: var(--accent-hover); }
.login-error {
  background: var(--bad-bg);
  color: var(--bad);
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  margin-bottom: 16px;
  border: 1px solid #fecaca;
}
.login-foot {
  margin-top: 24px;
  font-size: 12px;
  color: var(--text-faint);
  text-align: center;
}

/* ---------- LAYOUT ---------- */
.shell {
  display: grid;
  grid-template-columns: 280px 1fr;
  min-height: 100vh;
}
.sidebar {
  background: var(--surface);
  border-right: 1px solid var(--border);
  padding: 24px 18px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}
.sidebar-brand {
  padding: 4px 8px 20px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 16px;
}
.sidebar-brand .label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-faint);
}
.sidebar-brand .title {
  font-size: 16px;
  font-weight: 600;
  margin-top: 4px;
  letter-spacing: -0.01em;
}
.sidebar-brand .sub {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 4px;
}
.nav {
  list-style: none;
  padding: 0;
  margin: 0 0 24px;
}
.nav li { margin-bottom: 2px; }
.nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: 14px;
  font-weight: 500;
  transition: background 0.12s, color 0.12s;
}
.nav a:hover {
  background: var(--surface-2);
  color: var(--text);
  text-decoration: none;
}
.nav a.active {
  background: var(--accent);
  color: white;
}
.nav-num {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.05em;
  opacity: 0.7;
  min-width: 18px;
}
.sidebar-foot {
  position: sticky;
  bottom: 0;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  background: var(--surface);
}
.logout-btn {
  display: block;
  width: 100%;
  padding: 8px 12px;
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  font-size: 13px;
  cursor: pointer;
  text-align: center;
  font-family: inherit;
}
.logout-btn:hover {
  background: var(--surface-2);
  color: var(--text);
}

.main {
  padding: 48px 56px 96px;
  max-width: 980px;
}

/* ---------- SECTION ---------- */
.section { display: none; }
.section.active { display: block; }
.section-eyebrow {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 8px;
}
.section-title {
  font-size: 30px;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 0 0 8px;
}
.section-lede {
  font-size: 17px;
  color: var(--text-muted);
  margin: 0 0 36px;
  max-width: 760px;
  line-height: 1.55;
}

h3 {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 36px 0 12px;
}
h4 {
  font-size: 15px;
  font-weight: 600;
  margin: 24px 0 8px;
  color: var(--text);
}
p { margin: 0 0 14px; max-width: 760px; }
ul, ol { padding-left: 22px; margin: 0 0 16px; max-width: 760px; }
li { margin-bottom: 6px; }
strong { font-weight: 600; }

.divider {
  height: 1px;
  background: var(--border);
  margin: 40px 0;
  border: none;
}

/* ---------- VERDICT BOX ---------- */
.verdict {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 4px solid var(--good);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin-bottom: 28px;
  box-shadow: var(--shadow-sm);
}
.verdict-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--good);
}
.verdict-headline {
  font-size: 20px;
  font-weight: 600;
  margin: 6px 0 6px;
  letter-spacing: -0.01em;
}
.verdict-body {
  font-size: 14px;
  color: var(--text-muted);
  margin: 0;
}

/* ---------- CARDS ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
  margin: 20px 0 24px;
}
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 18px 16px;
  box-shadow: var(--shadow-sm);
}
.card-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-faint);
}
.card-value {
  font-size: 24px;
  font-weight: 600;
  margin: 4px 0;
  letter-spacing: -0.02em;
}
.card-note {
  font-size: 13px;
  color: var(--text-muted);
  margin: 0;
}

/* ---------- TABLES ---------- */
.table-wrap {
  overflow-x: auto;
  margin: 16px 0 28px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
}
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
th, td {
  text-align: left;
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
th {
  background: var(--surface-2);
  font-weight: 600;
  font-size: 13px;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border-strong);
}
tr:last-child td { border-bottom: none; }
tbody tr:hover { background: var(--surface-2); }

/* ---------- BADGES ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  white-space: nowrap;
}
.badge-good { background: var(--good-bg); color: var(--good); }
.badge-warn { background: var(--warn-bg); color: var(--warn); }
.badge-bad { background: var(--bad-bg); color: var(--bad); }
.badge-info { background: var(--info-bg); color: var(--info); }
.badge-muted { background: var(--surface-2); color: var(--text-muted); }

/* ---------- CALLOUTS ---------- */
.callout {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 4px solid var(--info);
  border-radius: var(--radius);
  padding: 16px 18px;
  margin: 18px 0;
}
.callout-warn { border-left-color: var(--warn); }
.callout-bad { border-left-color: var(--bad); }
.callout-good { border-left-color: var(--good); }
.callout-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 4px;
}
.callout p:last-child { margin-bottom: 0; }

/* ---------- KEY-VAL LIST ---------- */
.kv {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 8px 24px;
  padding: 14px 18px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 18px;
}
.kv dt {
  font-weight: 500;
  color: var(--text-muted);
  font-size: 13px;
}
.kv dd { margin: 0; font-size: 14px; }

/* ---------- SCORE BAR ---------- */
.score {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.score-dot {
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--border-strong);
}
.score-dot.on { background: var(--accent); }
.score-dot.on-good { background: var(--good); }
.score-dot.on-warn { background: var(--warn); }
.score-dot.on-bad { background: var(--bad); }

/* ---------- META FOOT ---------- */
.meta-foot {
  margin-top: 64px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  font-size: 12px;
  color: var(--text-faint);
}

/* ---------- RESPONSIVE ---------- */
@media (max-width: 900px) {
  .shell { grid-template-columns: 1fr; }
  .sidebar {
    position: static;
    height: auto;
    border-right: none;
    border-bottom: 1px solid var(--border);
  }
  .sidebar-foot { position: static; }
  .main { padding: 32px 24px 64px; }
  .section-title { font-size: 24px; }
  .kv { grid-template-columns: 1fr; }
  .kv dt { font-weight: 600; color: var(--text); }
}