/* ===== CSS Variables ===== */
:root {
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-light: #dbeafe;
  --danger: #dc2626;
  --danger-hover: #b91c1c;
  --danger-light: #fee2e2;
  --success: #16a34a;
  --success-light: #dcfce7;
  --warning: #d97706;
  --warning-light: #fef3c7;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  --white: #ffffff;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07), 0 2px 4px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1), 0 4px 6px rgba(0, 0, 0, 0.05);
  --radius: 6px;
  --radius-lg: 8px;
  --sidebar-width: 220px;
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen,
    Ubuntu, Cantarell, 'Helvetica Neue', Arial, sans-serif;
  --transition: 150ms ease;
}

/* ===== Reset ===== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 14px;
}

body {
  font-family: var(--font-family);
  color: var(--gray-800);
  background: var(--gray-50);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--primary);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* ===== Login Page ===== */
.login-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: linear-gradient(135deg, #1e3a5f 0%, #2563eb 100%);
}

.login-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 48px 40px;
  width: 100%;
  max-width: 400px;
  text-align: center;
}

.login-card__logo {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 4px;
}

.login-card__subtitle {
  font-size: 0.875rem;
  color: var(--gray-500);
  margin-bottom: 32px;
}

.login-card__error {
  background: var(--danger-light);
  color: var(--danger);
  padding: 10px 14px;
  border-radius: var(--radius);
  font-size: 0.875rem;
  margin-bottom: 16px;
  display: none;
}

.login-card__error.visible {
  display: block;
}

.login-card__google-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 0;
  margin-top: 8px;
}

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

/* Sidebar */
.sidebar {
  width: var(--sidebar-width);
  background: var(--gray-900);
  color: var(--gray-300);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 100;
  transition: transform var(--transition);
}

.sidebar__header {
  padding: 20px 16px;
  border-bottom: 1px solid var(--gray-700);
}

.sidebar__title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
}

.sidebar__badge {
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--primary);
  background: var(--primary-light);
  padding: 2px 6px;
  border-radius: 3px;
  margin-left: 4px;
  vertical-align: middle;
}

.sidebar__nav {
  flex: 1;
  padding: 12px 0;
  list-style: none;
}

.sidebar__nav-item {
  list-style: none;
}

.sidebar__nav-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  color: var(--gray-400);
  font-size: 0.9rem;
  text-decoration: none;
  transition: background var(--transition), color var(--transition);
  border-left: 3px solid transparent;
}

.sidebar__nav-link:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--white);
  text-decoration: none;
}

.sidebar__nav-link.active {
  background: rgba(255, 255, 255, 0.08);
  color: var(--white);
  border-left-color: var(--primary);
}

.sidebar__nav-icon {
  font-size: 1.1rem;
  width: 20px;
  text-align: center;
}

.sidebar__footer {
  padding: 16px;
  border-top: 1px solid var(--gray-700);
}

.sidebar__user {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.sidebar__avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--primary);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 600;
  flex-shrink: 0;
}

.sidebar__user-info {
  overflow: hidden;
}

.sidebar__user-name {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--white);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar__user-email {
  font-size: 0.7rem;
  color: var(--gray-400);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Main content */
.main {
  margin-left: var(--sidebar-width);
  flex: 1;
  padding: 24px 32px;
  min-width: 0;
}

/* Mobile toggle */
.sidebar-toggle {
  display: none;
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 200;
  background: var(--gray-900);
  color: var(--white);
  border: none;
  border-radius: var(--radius);
  padding: 8px 10px;
  cursor: pointer;
  font-size: 1.2rem;
  line-height: 1;
}

.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  z-index: 90;
}

/* ===== Page Header ===== */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 12px;
}

.page-header__title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--gray-900);
}

.page-header__actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  font-family: inherit;
  line-height: 1.4;
  white-space: nowrap;
}

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

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

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

.btn--outline {
  background: var(--white);
  color: var(--gray-700);
  border-color: var(--gray-300);
}

.btn--outline:hover:not(:disabled) {
  background: var(--gray-50);
  border-color: var(--gray-400);
}

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

.btn--danger:hover:not(:disabled) {
  background: var(--danger-hover);
  border-color: var(--danger-hover);
}

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

.btn--danger-outline:hover:not(:disabled) {
  background: var(--danger-light);
}

.btn--small {
  padding: 4px 10px;
  font-size: 0.8rem;
}

.btn--icon {
  padding: 6px 8px;
}

.btn--logout {
  background: transparent;
  color: var(--gray-400);
  border-color: var(--gray-600);
  width: 100%;
  justify-content: center;
}

.btn--logout:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--white);
  border-color: var(--gray-500);
}

/* ===== Cards ===== */
.card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.card__header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--gray-200);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.card__title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--gray-900);
}

.card__body {
  padding: 20px;
}

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

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

thead th {
  text-align: left;
  padding: 10px 16px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--gray-500);
  background: var(--gray-50);
  border-bottom: 1px solid var(--gray-200);
  white-space: nowrap;
  cursor: default;
  user-select: none;
}

thead th.sortable {
  cursor: pointer;
}

thead th.sortable:hover {
  color: var(--gray-700);
}

thead th .sort-icon {
  margin-left: 4px;
  font-size: 0.65rem;
  opacity: 0.4;
}

thead th.sort-asc .sort-icon,
thead th.sort-desc .sort-icon {
  opacity: 1;
  color: var(--primary);
}

tbody tr {
  border-bottom: 1px solid var(--gray-100);
  transition: background var(--transition);
}

tbody tr:hover {
  background: var(--gray-50);
}

tbody tr:nth-child(even) {
  background: var(--gray-50);
}

tbody tr:nth-child(even):hover {
  background: var(--gray-100);
}

tbody td {
  padding: 10px 16px;
  font-size: 0.875rem;
  color: var(--gray-700);
  white-space: nowrap;
}

tbody td.wrap {
  white-space: normal;
}

.table-empty {
  text-align: center;
  padding: 40px 16px;
  color: var(--gray-400);
  font-size: 0.9rem;
}

/* ===== Badges / Status ===== */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 9999px;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

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

.badge--inactive {
  background: var(--gray-100);
  color: var(--gray-500);
}

.badge--admin {
  background: var(--primary-light);
  color: var(--primary);
}

.badge--member {
  background: var(--gray-100);
  color: var(--gray-600);
}

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

/* ===== Forms ===== */
.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: 4px;
}

.form-control {
  width: 100%;
  padding: 8px 12px;
  font-size: 0.875rem;
  font-family: inherit;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius);
  color: var(--gray-800);
  background: var(--white);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.form-control::placeholder {
  color: var(--gray-400);
}

select.form-control {
  cursor: pointer;
}

.form-row {
  display: flex;
  gap: 12px;
}

.form-row .form-group {
  flex: 1;
}

/* ===== Modal ===== */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: opacity 200ms ease, visibility 200ms ease;
}

.modal-backdrop.open {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 480px;
  max-height: 90vh;
  overflow-y: auto;
  transform: translateY(10px);
  transition: transform 200ms ease;
}

.modal-backdrop.open .modal {
  transform: translateY(0);
}

.modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--gray-200);
}

.modal__title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--gray-900);
}

.modal__close {
  background: none;
  border: none;
  font-size: 1.4rem;
  color: var(--gray-400);
  cursor: pointer;
  padding: 0;
  line-height: 1;
}

.modal__close:hover {
  color: var(--gray-600);
}

.modal__body {
  padding: 20px;
}

.modal__footer {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  padding: 12px 20px;
  border-top: 1px solid var(--gray-200);
}

/* ===== Toast ===== */
.toast-container {
  position: fixed;
  top: 16px;
  right: 16px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  font-size: 0.875rem;
  color: var(--gray-800);
  pointer-events: auto;
  animation: toast-in 250ms ease forwards;
  min-width: 280px;
  max-width: 400px;
}

.toast.removing {
  animation: toast-out 200ms ease forwards;
}

.toast--success {
  border-left: 4px solid var(--success);
}

.toast--error {
  border-left: 4px solid var(--danger);
}

.toast--warning {
  border-left: 4px solid var(--warning);
}

.toast--info {
  border-left: 4px solid var(--primary);
}

.toast__icon {
  font-size: 1.1rem;
  flex-shrink: 0;
}

.toast__message {
  flex: 1;
}

.toast__close {
  background: none;
  border: none;
  color: var(--gray-400);
  cursor: pointer;
  font-size: 1.1rem;
  padding: 0;
  line-height: 1;
  flex-shrink: 0;
}

@keyframes toast-in {
  from {
    opacity: 0;
    transform: translateX(40px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes toast-out {
  from {
    opacity: 1;
    transform: translateX(0);
  }
  to {
    opacity: 0;
    transform: translateX(40px);
  }
}

/* ===== Pagination ===== */
.pagination {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  border-top: 1px solid var(--gray-200);
  font-size: 0.8rem;
  color: var(--gray-500);
}

.pagination__info {
  color: var(--gray-500);
}

.pagination__controls {
  display: flex;
  gap: 4px;
}

.pagination__btn {
  padding: 4px 10px;
  border: 1px solid var(--gray-300);
  background: var(--white);
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 0.8rem;
  color: var(--gray-600);
  transition: all var(--transition);
}

.pagination__btn:hover:not(:disabled) {
  background: var(--gray-50);
  border-color: var(--gray-400);
}

.pagination__btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.pagination__btn.active {
  background: var(--primary);
  color: var(--white);
  border-color: var(--primary);
}

/* ===== Filters bar ===== */
.filters {
  display: flex;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
  align-items: flex-end;
}

.filters .form-group {
  margin-bottom: 0;
  min-width: 160px;
}

/* ===== Detail view ===== */
.detail-section {
  margin-bottom: 24px;
}

.detail-section__title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.detail-grid {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 8px 16px;
  font-size: 0.875rem;
}

.detail-grid dt {
  color: var(--gray-500);
  font-weight: 500;
}

.detail-grid dd {
  color: var(--gray-800);
}

.info-banner {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px 16px;
  background: var(--primary-light);
  border: 1px solid #bfdbfe;
  border-radius: var(--radius);
  font-size: 0.85rem;
  color: var(--primary-hover);
  margin-bottom: 16px;
}

.info-banner__icon {
  font-size: 1.1rem;
  flex-shrink: 0;
  margin-top: 1px;
}

.danger-zone {
  border: 1px solid var(--danger);
  border-radius: var(--radius);
  padding: 16px;
  margin-top: 24px;
}

.danger-zone__title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--danger);
  margin-bottom: 8px;
}

.danger-zone__desc {
  font-size: 0.8rem;
  color: var(--gray-600);
  margin-bottom: 12px;
}

/* ===== Loading spinner ===== */
.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
  color: var(--gray-400);
  gap: 8px;
}

.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--gray-200);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 600ms linear infinite;
}

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

/* ===== Clickable row ===== */
tr.clickable {
  cursor: pointer;
}

/* ===== Back link ===== */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.85rem;
  color: var(--gray-500);
  margin-bottom: 12px;
  cursor: pointer;
  background: none;
  border: none;
  font-family: inherit;
  padding: 0;
}

.back-link:hover {
  color: var(--primary);
}

/* ===== Toggle ===== */
.toggle-group {
  display: inline-flex;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius);
  overflow: hidden;
}

.toggle-group__btn {
  padding: 4px 12px;
  font-size: 0.8rem;
  border: none;
  background: var(--white);
  color: var(--gray-600);
  cursor: pointer;
  font-family: inherit;
  transition: all var(--transition);
}

.toggle-group__btn + .toggle-group__btn {
  border-left: 1px solid var(--gray-300);
}

.toggle-group__btn.active {
  background: var(--primary);
  color: var(--white);
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .sidebar-toggle {
    display: block;
  }

  .sidebar-overlay.visible {
    display: block;
  }

  .main {
    margin-left: 0;
    padding: 16px;
    padding-top: 56px;
  }

  .page-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .filters {
    flex-direction: column;
  }

  .filters .form-group {
    min-width: 100%;
  }

  .form-row {
    flex-direction: column;
  }

  .detail-grid {
    grid-template-columns: 1fr;
  }
}