/* PRISM Admin Dashboard – Shared styling */

:root {
  --color-primary: #667eea;
  --color-primary-dark: #5568d3;
  --color-success: #28a745;
  --color-warning: #ffc107;
  --color-danger: #dc3545;
  --color-info: #17a2b8;
  --color-light: #f8f9fa;
  --color-dark: #1a1a1a;
  --color-border: #ddd;
  --color-text: #333;
  --color-text-muted: #666;
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --radius: 6px;
  --shadow: 0 2px 8px rgba(0,0,0,0.1);
  --shadow-lg: 0 20px 60px rgba(0,0,0,0.3);
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
}

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

/* Layout: Sidebar + Content */
.admin-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  min-height: 100vh;
}

.admin-sidebar {
  background: var(--color-dark);
  color: white;
  padding: var(--spacing-lg);
  border-right: 1px solid var(--color-border);
  position: fixed;
  width: 240px;
  height: 100vh;
  overflow-y: auto;
  z-index: 100;
}

.admin-sidebar h2 {
  margin: 0 0 var(--spacing-lg) 0;
  font-size: 18px;
  font-weight: 600;
}

.admin-sidebar nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.admin-sidebar nav li {
  margin-bottom: var(--spacing-sm);
}

.admin-sidebar nav a {
  display: block;
  padding: var(--spacing-sm) var(--spacing-md);
  color: rgba(255,255,255,0.8);
  text-decoration: none;
  border-radius: var(--radius);
  transition: all 0.2s;
  font-size: 13px;
}

.admin-sidebar nav a:hover {
  background: rgba(255,255,255,0.1);
  color: white;
}

.admin-sidebar nav a.active {
  background: var(--color-primary);
  color: white;
  font-weight: 500;
}

.admin-topbar {
  background: white;
  border-bottom: 1px solid var(--color-border);
  padding: var(--spacing-md) var(--spacing-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  grid-column: 2;
}

.admin-topbar-title {
  margin: 0;
  font-size: 18px;
  font-weight: 600;
}

.admin-topbar-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  font-size: 13px;
}

.admin-topbar-email {
  color: var(--color-text-muted);
}

.admin-main {
  grid-column: 2;
  padding: var(--spacing-xl);
  background: #fafafa;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  margin-top: 0;
  margin-bottom: var(--spacing-md);
  font-weight: 600;
  line-height: 1.3;
}

h1 { font-size: 28px; }
h2 { font-size: 22px; }
h3 { font-size: 18px; }
h4 { font-size: 16px; }

p {
  margin: 0 0 var(--spacing-md) 0;
}

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

a:hover {
  text-decoration: underline;
}

/* Buttons */
button, .btn {
  padding: var(--spacing-sm) var(--spacing-md);
  border: none;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  display: inline-block;
  text-align: center;
  text-decoration: none;
}

button:disabled, .btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

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

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

.btn-secondary {
  background: #e9ecef;
  color: var(--color-text);
}

.btn-secondary:hover {
  background: #dee2e6;
}

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

.btn-danger:hover {
  background: #c82333;
}

.btn-small {
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: 12px;
}

.btn-icon {
  padding: var(--spacing-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* Forms */
.form-group {
  margin-bottom: var(--spacing-md);
}

.form-group label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: 500;
  font-size: 13px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: var(--spacing-sm);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 14px;
  font-family: inherit;
  transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

.form-error {
  color: var(--color-danger);
  font-size: 12px;
  margin-top: var(--spacing-xs);
}

/* Tables */
table {
  width: 100%;
  border-collapse: collapse;
  background: white;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

thead {
  background: #f8f9fa;
  border-bottom: 2px solid var(--color-border);
}

th {
  padding: var(--spacing-md);
  text-align: left;
  font-weight: 600;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--color-text-muted);
}

td {
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--color-border);
}

tbody tr:hover {
  background: #fafafa;
}

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

/* Cards and containers */
.card {
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
  box-shadow: var(--shadow);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-md);
  border-bottom: 1px solid var(--color-border);
  padding-bottom: var(--spacing-md);
}

.card-header h3 {
  margin: 0;
}

/* Alerts and status messages */
.alert {
  padding: var(--spacing-md);
  border-radius: var(--radius);
  margin-bottom: var(--spacing-lg);
  border-left: 4px solid;
}

.alert-success {
  background: #d4edda;
  border-color: var(--color-success);
  color: #155724;
}

.alert-danger {
  background: #f8d7da;
  border-color: var(--color-danger);
  color: #721c24;
}

.alert-warning {
  background: #fff3cd;
  border-color: var(--color-warning);
  color: #856404;
}

.alert-info {
  background: #d1ecf1;
  border-color: var(--color-info);
  color: #0c5460;
}

/* Badges */
.badge {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: 12px;
  font-size: 12px;
  font-weight: 500;
  background: #e9ecef;
  color: var(--color-text);
}

.badge-primary {
  background: rgba(102, 126, 234, 0.2);
  color: var(--color-primary);
}

.badge-success {
  background: rgba(40, 167, 69, 0.2);
  color: var(--color-success);
}

.badge-danger {
  background: rgba(220, 53, 69, 0.2);
  color: var(--color-danger);
}

.badge-warning {
  background: rgba(255, 193, 7, 0.2);
  color: #856404;
}

/* Modals/Dialogs */
dialog {
  border: none;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  max-width: 500px;
  width: 90%;
  padding: 0;
}

dialog::backdrop {
  background: rgba(0,0,0,0.5);
}

dialog > div {
  padding: var(--spacing-lg);
}

dialog .dialog-header {
  margin-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--color-border);
  padding-bottom: var(--spacing-md);
}

dialog .dialog-header h2 {
  margin: 0;
}

dialog .dialog-footer {
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--color-border);
  display: flex;
  gap: var(--spacing-md);
  justify-content: flex-end;
}

/* Utility classes */
.hidden {
  display: none;
}

.inline {
  display: inline;
}

.flex {
  display: flex;
  gap: var(--spacing-md);
}

.flex-between {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }

.text-muted {
  color: var(--color-text-muted);
}

.text-small {
  font-size: 12px;
}

.text-center {
  text-align: center;
}

.truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Spinners */
.spinner {
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 2px solid rgba(102, 126, 234, 0.3);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

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

/* Responsive */
@media (max-width: 768px) {
  .admin-layout {
    grid-template-columns: 1fr;
  }

  .admin-sidebar {
    position: relative;
    width: 100%;
    height: auto;
    border-right: none;
    border-bottom: 1px solid var(--color-border);
  }

  .admin-topbar {
    grid-column: 1;
  }

  .admin-main {
    grid-column: 1;
    padding: var(--spacing-lg);
  }

  .admin-sidebar nav ul {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
  }

  .admin-sidebar nav li {
    margin-bottom: 0;
  }

  table {
    font-size: 12px;
  }

  th, td {
    padding: var(--spacing-sm);
  }

  dialog {
    width: 95%;
    max-width: none;
  }
}