:root {
  --brand-900: #012f59;
  --brand-800: #023d72;
  --brand-700: #035696;
  --brand-650: #024a84;

  --success-600: #27ae60;
  --success-700: #229954;
  --danger-600: #e74c3c;
  --danger-700: #c0392b;

  --white: #ffffff;
  --text-900: #1f2937;
  --text-800: #2d3748;
  --text-700: #4a5568;
  --text-600: #6b7280;
  --muted: rgba(0, 0, 0, 0.55);

  --surface: #ffffff;
  --surface-50: #f8f9fa;
  --surface-100: #f1f3f5;
  --border-200: #e2e8f0;
  --border-300: #d9dee7;

  --danger-bg: #fee2e2;
  --danger-border: #fca5a5;

  --shadow-sm: 0 2px 6px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 6px 16px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 10px 28px rgba(0, 0, 0, 0.18);

  --r-sm: 6px;
  --r-md: 8px;
  --r-lg: 12px;

  --p-2: 8px;
  --p-3: 12px;
  --p-4: 16px;
  --p-5: 20px;
}

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

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background: #f3f4f6;
  color: var(--text-900);
  min-height: 100vh;
  padding: 0;
}

.container {
  width: min(90rem, 100%);
  margin: 0 auto;
  padding: 18px 20px 40px;
}

.header {
  background: var(--surface);
  border-radius: var(--r-lg);
  padding: 16px 20px;
  margin-bottom: 20px;
  border: 1px solid var(--border-200);
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.header-left,
.header-right,
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header-text {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.header-text h1 {
  font-size: 22px;
  color: var(--brand-800);
  margin: 0;
}

.header-text p {
  color: var(--text-600);
  font-size: 13px;
  margin: 0;
}

.logo-badge {
  background: var(--surface);
  border-radius: 10px;
  padding: 6px 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-200);
  box-shadow: none;
}

.logo-badge img {
  height: 36px;
  width: auto;
  display: block;
}

.btn {
  appearance: none;
  border: 0;
  border-radius: var(--r-md);
  cursor: pointer;
  font-size: 14px;
  line-height: 1;
  padding: 10px 18px;
  transition: background 0.2s, color 0.2s, transform 0.2s, box-shadow 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--brand-800);
  color: var(--white);
  box-shadow: var(--shadow-sm);
}

.nav-btn {
  appearance: none;
  border: 0;
  border-radius: var(--r-md);
  cursor: pointer;
  font-size: 14px;
  line-height: 1;
  padding: 10px 18px;
  transition: background 0.2s, color 0.2s, transform 0.2s, box-shadow 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--brand-800);
  color: var(--white);
  box-shadow: var(--shadow-sm);
}

.nav-btn:hover {
  background: var(--brand-900);
  transform: translateY(-1px);
}

.nav-btn.secondary {
  background: var(--brand-700);
}

.nav-btn.secondary:hover {
  background: var(--brand-650);
}

.nav-btn.danger {
  background: var(--danger-600);
}

.nav-btn.danger:hover {
  background: var(--danger-700);
}

.btn:hover {
  background: var(--brand-900);
  transform: translateY(-1px);
}

.btn-ghost,
.btn.secondary,
.btn.secondary:hover {
  background: var(--brand-700);
  color: var(--white);
}

.btn-ghost:hover,
.btn.secondary:hover {
  background: var(--brand-650);
}

.btn-success {
  background: var(--success-600);
  color: var(--white);
}

.btn-success:hover {
  background: var(--success-700);
}

.btn-danger {
  background: var(--danger-600);
  color: var(--white);
}

.btn-danger:hover {
  background: var(--danger-700);
}

.btn-rollback {
  background: var(--danger-600);
  color: var(--white);
}

.btn-rollback:hover {
  background: var(--danger-700);
}

.btn-view {
  background: var(--brand-700);
  color: var(--white);
}

.btn-view:hover {
  background: var(--brand-650);
}

.btn:disabled,
.btn[disabled] {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.nav-buttons,
.toolbar,
.action-buttons {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.login-section {
  background: var(--surface);
  border-radius: var(--r-lg);
  padding: 36px;
  text-align: center;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-200);
  max-width: 460px;
  margin: 40px auto;
}

.login-form {
  max-width: 320px;
  margin: 0 auto;
}

.form-group {
  margin-bottom: 14px;
  text-align: left;
}

label {
  display: block;
  margin-bottom: 6px;
  font-weight: 600;
  color: var(--text-700);
  font-size: 13px;
}

input[type="text"],
input[type="password"],
input[type="email"],
input[type="number"],
input[type="search"],
select,
textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border-300);
  border-radius: var(--r-sm);
  font-size: 14px;
  background: var(--surface);
  color: var(--text-900);
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: color-mix(in srgb, var(--brand-800) 40%, var(--border-200));
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--brand-800) 12%, transparent);
}

textarea {
  min-height: 140px;
  resize: vertical;
  font-family: "Courier New", monospace;
}

.card {
  background: var(--surface);
  border-radius: var(--r-lg);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-200);
  margin-bottom: 20px;
}

.panel,
.admin-panel,
.staff-panel {
  display: block;
}

.status-message,
.banner {
  padding: 10px 12px;
  margin: 10px 0;
  border-radius: var(--r-sm);
  display: none;
  font-size: 13px;
  border: 1px solid transparent;
  background: var(--surface-50);
  color: var(--text-700);
}

.status-success,
.banner.success {
  background: color-mix(in srgb, var(--success-600) 18%, var(--white));
  color: var(--success-600);
  border-color: color-mix(in srgb, var(--success-600) 35%, var(--white));
}

.status-error,
.banner.error {
  background: var(--danger-bg);
  color: var(--danger-600);
  border-color: var(--danger-border);
}

.meta,
.helper-text,
.muted {
  color: var(--text-600);
  font-size: 12px;
}

.table-wrapper {
  width: 100%;
  overflow: auto;
}

.table-wrapper table {
  width: 100%;
  border-collapse: collapse;
}

.table-wrapper thead {
  background: var(--surface-50);
}

.table-wrapper th {
  padding: 12px;
  text-align: left;
  font-weight: 600;
  border-bottom: 2px solid var(--border-300);
  font-size: 14px;
}

.table-wrapper td {
  padding: 12px;
  border-bottom: 1px solid var(--border-200);
  font-size: 14px;
  vertical-align: top;
}

.table-wrapper tbody tr:hover {
  background: var(--surface-50);
}

.filters {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  margin: 16px 0;
  padding: 12px;
  background: var(--surface-50);
  border-radius: var(--r-sm);
  border: 1px solid var(--border-200);
}

.search-bar {
  display: flex;
  gap: 10px;
  margin-bottom: 16px;
}

.search-input {
  flex: 1;
  padding: 10px 12px;
  border: 1px solid var(--border-300);
  border-radius: var(--r-sm);
}

.search-btn {
  background: var(--brand-700);
  color: var(--white);
}

.grid,
.grid-2,
.form-row {
  display: grid;
  gap: 14px;
}

.grid {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-2,
.form-row {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.divider {
  height: 1px;
  background: var(--border-200);
  margin: 12px 0;
}

.modal {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  z-index: 1200;
  padding: var(--p-5);
}

.modal.show {
  display: block;
}

.modal-content,
.modal-card {
  background: var(--surface);
  margin: 40px auto;
  padding: 24px;
  width: min(900px, 100%);
  max-height: 85vh;
  overflow-y: auto;
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-200);
  position: relative;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: transparent;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--p-3);
  gap: 10px;
}

.modal-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-900);
}

.modal-actions,
.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 16px;
}

.icon-button,
.modal-close,
.close-btn {
  background: transparent;
  border: 1px solid var(--border-200);
  border-radius: var(--r-sm);
  padding: 6px 10px;
  cursor: pointer;
  color: var(--text-600);
}

.icon-button:hover,
.modal-close:hover,
.close-btn:hover {
  color: var(--text-900);
  background: var(--surface-100);
}

.auth-spinner {
  width: 44px;
  height: 44px;
  border: 4px solid var(--border-200);
  border-top-color: var(--brand-800);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto;
}

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

@media (max-width: 900px) {
  .header {
    flex-direction: column;
    align-items: flex-start;
  }

  .header-actions,
  .header-right {
    width: 100%;
    justify-content: flex-start;
  }

  .login-section {
    margin: 20px auto;
    padding: 28px;
  }
}