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

:root {
  --bg: #ffffff;
  --bg-2: #f8f9fa;
  --bg-3: #e9ecef;
  --text: #212529;
  --text-2: #495057;
  --text-3: #868e96;
  --border: #dee2e6;
  --accent: #228be6;
  --accent-hover: #1c7ed6;
  --danger: #e03131;
  --danger-hover: #c92a2a;
  --warning: #f08c00;
  --success: #2f9e44;
  --radius: 6px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  background: var(--bg-2);
  color: var(--text);
  line-height: 1.5;
  font-size: 14px;
}

/* Login */
.login-body {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
}

.login-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  width: 360px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.login-card h1 {
  font-size: 1.25rem;
  margin-bottom: 1.5rem;
  text-align: center;
}

/* App Layout */
.app {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: 200px;
  background: var(--bg);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 0.5rem 0;
  flex-shrink: 0;
}

.sidebar-brand {
  font-weight: 700;
  font-size: 1rem;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 0.5rem;
}

.nav-link {
  display: block;
  padding: 0.5rem 1rem;
  color: var(--text-2);
  text-decoration: none;
  font-size: 0.875rem;
  transition: background 0.15s;
}

.nav-link:hover {
  background: var(--bg-3);
  color: var(--text);
}

.nav-spacer { flex: 1; }

.nav-user {
  padding: 0.5rem 1rem;
  font-size: 0.75rem;
  color: var(--text-3);
  border-top: 1px solid var(--border);
  margin-top: 0.5rem;
}

.nav-logout {
  color: var(--text-3);
  font-size: 0.75rem;
}

.content {
  flex: 1;
  padding: 1.5rem 2rem;
  max-width: 1200px;
  overflow-y: auto;
}

/* Page Header */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}

.page-header h1 {
  font-size: 1.5rem;
  font-weight: 600;
}

.header-actions {
  display: flex;
  gap: 0.5rem;
}

/* Cards */
.card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  margin-bottom: 1rem;
}

.card h2, .card h3 {
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  color: var(--text);
}

.card-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1rem;
}

/* Stats */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.stat-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  text-align: center;
}

.stat-card.stat-warning { border-color: var(--warning); }
.stat-card.stat-danger { border-color: var(--danger); }

.stat-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
}

.stat-card.stat-warning .stat-value { color: var(--warning); }
.stat-card.stat-danger .stat-value { color: var(--danger); }

.stat-label {
  font-size: 0.75rem;
  color: var(--text-3);
  margin-top: 0.25rem;
}

/* Detail */
.detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1rem;
}

.detail-list {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.25rem 1rem;
  font-size: 0.875rem;
}

.detail-list dt {
  color: var(--text-3);
  font-weight: 500;
}

.detail-list dd {
  color: var(--text);
}

/* Tables */
.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.table th {
  text-align: left;
  padding: 0.5rem 0.75rem;
  border-bottom: 2px solid var(--border);
  color: var(--text-3);
  font-weight: 600;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.table td {
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid var(--border);
}

.table a {
  color: var(--accent);
  text-decoration: none;
}

.table a:hover {
  text-decoration: underline;
}

.details-cell {
  max-width: 300px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.details-cell code {
  font-size: 0.75rem;
  color: var(--text-3);
}

/* Badges */
.badge {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  border-radius: 3px;
  font-size: 0.75rem;
  font-weight: 500;
}

.badge-success { background: #d3f9d8; color: #2b8a3e; }
.badge-warning { background: #fff3bf; color: #e67700; }
.badge-danger, .badge-duplicate_detected, .badge-license_revoked, .badge-rejected_revoked, .badge-rejected_expired { background: #ffe3e3; color: #c92a2a; }
.badge-muted { background: var(--bg-3); color: var(--text-3); }
.badge-validated, .badge-license_generated, .badge-license_renewed { background: #d0ebff; color: #1864ab; }

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

.form-group label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-2);
  margin-bottom: 0.25rem;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="password"],
.form-group input[type="number"],
.form-group input[type="date"],
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.875rem;
  background: var(--bg);
  color: var(--text);
  outline: none;
  transition: border-color 0.15s;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--accent);
}

.form-actions {
  display: flex;
  gap: 0.5rem;
  margin-top: 1.5rem;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  font-size: 0.875rem;
}

.checkbox-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 0.5rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.875rem;
  font-weight: 500;
  background: var(--bg);
  color: var(--text);
  cursor: pointer;
  text-decoration: none;
  transition: background 0.15s;
}

.btn:hover { background: var(--bg-3); }

.btn-primary {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}

.btn-primary:hover { background: var(--accent-hover); }

.btn-danger {
  background: var(--danger);
  color: white;
  border-color: var(--danger);
}

.btn-danger:hover { background: var(--danger-hover); }

.btn-sm {
  padding: 0.25rem 0.5rem;
  font-size: 0.75rem;
}

.btn-block {
  width: 100%;
  justify-content: center;
}

/* Alerts */
.alert {
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  margin-bottom: 1rem;
  font-size: 0.875rem;
}

.alert-error {
  background: #ffe3e3;
  color: #c92a2a;
  border: 1px solid #ffc9c9;
}

/* Key display */
.key-display {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
}

.key-blob {
  flex: 1;
  font-family: 'SF Mono', 'Fira Code', monospace;
  font-size: 0.75rem;
  background: var(--bg-2);
  padding: 0.75rem;
  border-radius: var(--radius);
  word-break: break-all;
  line-height: 1.6;
}

/* Utility */
.text-muted { color: var(--text-3); font-size: 0.875rem; }

@media (max-width: 768px) {
  .detail-grid, .card-row {
    grid-template-columns: 1fr;
  }
  .sidebar { width: 160px; }
}