:root {
  --bg: #08080f;
  --surface: #12121c;
  --surface-2: #1a1a28;
  --border: #2a2a3a;
  --text: #eaeaf0;
  --muted: #8888a0;
  --accent: #7c5cff;
  --accent-hover: #6a48f0;
  --success: #3dd68c;
  --warning: #f5c542;
  --danger: #ff6b6b;
  --info: #5eb3ff;
  --radius: 12px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.5;
}

.hidden { display: none !important; }

/* ── Login ─────────────────────────────────────────── */
.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  background:
    radial-gradient(ellipse 80% 60% at 50% -10%, rgba(124, 92, 255, 0.15), transparent),
    var(--bg);
}

.login-card {
  width: 100%;
  max-width: 400px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow);
}

.login-logo {
  text-align: center;
  margin-bottom: 1.75rem;
}

.login-logo h1 {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.login-logo p {
  color: var(--muted);
  font-size: 0.85rem;
  margin-top: 0.35rem;
}

.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  font-size: 0.78rem;
  color: var(--muted);
  margin-bottom: 0.35rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.form-group input {
  width: 100%;
  padding: 0.65rem 0.85rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 0.95rem;
  transition: border-color 0.15s;
}

.form-group input:focus {
  outline: none;
  border-color: var(--accent);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.65rem 1.25rem;
  border: none;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s, opacity 0.15s;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  width: 100%;
  margin-top: 0.5rem;
}

.btn-primary:hover:not(:disabled) {
  background: var(--accent-hover);
}

.btn-ghost {
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--border);
}

.btn-ghost:hover {
  color: var(--text);
  border-color: var(--muted);
}

.error-msg {
  color: var(--danger);
  font-size: 0.85rem;
  margin-top: 0.75rem;
  text-align: center;
}

/* ── Dashboard shell ───────────────────────────────── */
.dashboard {
  min-height: 100vh;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1.5rem;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}

.topbar-brand {
  font-weight: 700;
  font-size: 1.05rem;
}

.topbar-brand span {
  color: var(--accent);
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.admin-info {
  font-size: 0.82rem;
  color: var(--muted);
}

.session-badge {
  font-size: 0.72rem;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  background: var(--surface-2);
  color: var(--muted);
}

.main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.5rem;
}

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.page-header h2 {
  font-size: 1.25rem;
  font-weight: 600;
}

.page-header .date {
  color: var(--muted);
  font-size: 0.85rem;
}

/* ── Metric cards ──────────────────────────────────── */
.section-title {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin-bottom: 0.75rem;
  margin-top: 1.5rem;
}

.section-title:first-child { margin-top: 0; }

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 0.85rem;
}

.metric-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.1rem;
  transition: border-color 0.15s;
}

.metric-card:hover {
  border-color: #3a3a50;
}

.metric-card .label {
  font-size: 0.72rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.metric-card .value {
  font-size: 1.75rem;
  font-weight: 700;
  margin-top: 0.3rem;
  line-height: 1.2;
}

.metric-card .sub {
  font-size: 0.75rem;
  color: var(--muted);
  margin-top: 0.25rem;
}

.metric-card.accent .value { color: var(--accent); }
.metric-card.success .value { color: var(--success); }
.metric-card.warning .value { color: var(--warning); }
.metric-card.danger .value { color: var(--danger); }
.metric-card.info .value { color: var(--info); }

.loading-overlay {
  text-align: center;
  padding: 3rem;
  color: var(--muted);
}

.spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  margin: 0 auto 1rem;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.footer-note {
  text-align: center;
  color: var(--muted);
  font-size: 0.75rem;
  margin-top: 2rem;
  padding-bottom: 1rem;
}

@media (max-width: 600px) {
  .topbar { padding: 0.75rem 1rem; }
  .main { padding: 1rem; }
  .metric-card .value { font-size: 1.4rem; }
  .admin-info { display: none; }
}