:root {
  color-scheme: dark;
  --bg: #000000;
  --surface: #0a0a0a;
  --surface-hover: #141414;
  --border: #1f1f1f;
  --border-focus: #333333;
  --text-primary: #ffffff;
  --text-secondary: #a1a1aa;
  --text-muted: #71717a;
  --accent: #ffffff;
  --accent-hover: #e4e4e7;
  --accent-text: #000000;
  --success: #10b981;
  --success-bg: rgba(16, 185, 129, 0.1);
  --warning: #f59e0b;
  --warning-bg: rgba(245, 158, 11, 0.1);
  --danger: #ef4444;
  --danger-bg: rgba(239, 68, 68, 0.1);
}

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

body {
  min-height: 100vh;
  background: var(--bg);
  color: var(--text-primary);
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.hidden {
  display: none !important;
}

.app-shell {
  max-width: 1240px;
  margin: 0 auto;
  padding: 24px;
}

/* Header */
.top-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 28px;
}

.brand-badge {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: #141414;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text-primary);
}

.brand-title h1 {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.brand-title p {
  font-size: 0.72rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.top-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 38px;
  padding: 0 16px;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
  border: none;
}

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

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

.btn-ghost {
  background: var(--surface);
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

.btn-ghost:hover {
  background: var(--surface-hover);
  color: var(--text-primary);
}

.btn-danger {
  background: var(--danger-bg);
  color: var(--danger);
  border: 1px solid rgba(239, 68, 68, 0.2);
}

.btn-danger:hover {
  background: rgba(239, 68, 68, 0.2);
}

.btn-xs {
  height: 28px;
  padding: 0 10px;
  font-size: 0.75rem;
  border-radius: 6px;
}

/* Status Pill */
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 500;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-secondary);
}

/* Auth Section */
.auth-container {
  max-width: 420px;
  margin: 60px auto;
  padding: 32px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  text-align: center;
}

.auth-container h2 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.auth-container p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

/* Forms & Inputs */
.form-grid {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  text-align: left;
}

.field span {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

input[type="text"],
input[type="password"],
select {
  width: 100%;
  height: 40px;
  padding: 0 12px;
  background: #000000;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 0.875rem;
  font-family: inherit;
  outline: none;
  transition: border-color 0.15s ease;
}

input[type="text"]:focus,
input[type="password"]:focus,
select:focus {
  border-color: var(--border-focus);
}

/* Stats Cards Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 28px;
}

.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 18px 20px;
}

.stat-card .label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 6px;
}

.stat-card .value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
}

/* Main Grid Layout */
.main-grid {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 24px;
}

@media (max-width: 960px) {
  .main-grid {
    grid-template-columns: 1fr;
  }
}

.left-col, .right-col {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* Panels */
.card-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.panel-header h2 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* Tables */
.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.825rem;
}

th {
  padding: 10px 12px;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--border);
}

td {
  padding: 12px;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

tr:last-child td {
  border-bottom: none;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.badge-active {
  background: var(--success-bg);
  color: var(--success);
}

.badge-grace {
  background: var(--warning-bg);
  color: var(--warning);
}

.badge-revoked, .badge-expired {
  background: var(--danger-bg);
  color: var(--danger);
}

.key-code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.8rem;
  background: #000000;
  padding: 3px 6px;
  border-radius: 4px;
  border: 1px solid var(--border);
  color: var(--text-primary);
}

/* Flash Message */
.flash {
  padding: 12px 16px;
  border-radius: 8px;
  font-size: 0.85rem;
  margin-bottom: 20px;
}

.flash-success {
  background: var(--success-bg);
  color: var(--success);
  border: 1px solid rgba(16, 185, 129, 0.2);
}

.flash-error {
  background: var(--danger-bg);
  color: var(--danger);
  border: 1px solid rgba(239, 68, 68, 0.2);
}