/* ============================================================
   AI Getaway — App Components
   Buttons, Cards, Inputs, Tables, Modals, etc.
   ============================================================ */

/* --- Buttons --------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.625rem 1.25rem;
  font-size: var(--text-sm);
  font-weight: 500;
  line-height: 1;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  transition: all var(--duration-fast) var(--ease-out);
  white-space: nowrap;
  user-select: none;
  position: relative;
  overflow: hidden;
}

.btn:active {
  transform: scale(0.97);
}

.btn-primary {
  background: var(--accent-blue);
  color: #fff;
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 0 rgba(59, 130, 246, 0);
}

.btn-primary:hover {
  background: var(--accent-blue-hover);
  border-color: var(--accent-blue-hover);
  box-shadow: 0 0 20px rgba(59, 130, 246, 0.25);
  transform: translateY(-1px);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-primary);
  border-color: var(--border-default);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--border-hover);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
}

.btn-danger {
  background: var(--accent-red);
  color: #fff;
  border-color: var(--accent-red);
}

.btn-danger:hover {
  background: var(--accent-red-hover);
  border-color: var(--accent-red-hover);
  box-shadow: 0 0 20px rgba(239, 68, 68, 0.25);
}

.btn-soft {
  background: var(--accent-blue-soft);
  color: var(--accent-blue);
  border-color: transparent;
}

.btn-soft:hover {
  background: rgba(59, 130, 246, 0.18);
}

.btn-sm {
  padding: 0.375rem 0.75rem;
  font-size: var(--text-xs);
  border-radius: var(--radius-sm);
}

.btn-lg {
  padding: 0.75rem 1.5rem;
  font-size: var(--text-base);
  border-radius: var(--radius-lg);
}

.btn-xl {
  padding: 0.875rem 2rem;
  font-size: var(--text-md);
  border-radius: var(--radius-xl);
}

.btn-full {
  width: 100%;
}

.btn:disabled,
.btn.loading {
  opacity: 0.5;
  pointer-events: none;
}

.btn.loading .btn-text { visibility: hidden; }
.btn.loading .btn-spinner { display: block; }

.btn-spinner {
  display: none;
  position: absolute;
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

/* Ripple effect */
.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle, rgba(255,255,255,0.2) 10%, transparent 10%);
  background-position: center;
  background-repeat: no-repeat;
  opacity: 0;
  transition: opacity 0.3s;
}

.btn:active::after {
  opacity: 1;
  transition: opacity 0s;
}

/* --- Cards ----------------------------------------------- */
.card {
  background: var(--bg-sub);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  transition: all var(--duration-normal) var(--ease-out);
}

.card-glass {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--glass-shadow);
}

.card-hover:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.card-gradient {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.06), rgba(139, 92, 246, 0.06));
  border: 1px solid rgba(59, 130, 246, 0.12);
}

.card-padded {
  padding: var(--space-6);
}

.card-sm {
  padding: var(--space-4);
}

/* Stat Cards */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-4);
}

.stat-card {
  padding: var(--space-5) var(--space-6);
}

.stat-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-3);
}

.stat-card-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-blue);
  background: var(--accent-blue-soft);
}

.stat-card-icon.emerald {
  color: var(--accent-emerald);
  background: var(--accent-emerald-soft);
}

.stat-card-icon.amber {
  color: var(--accent-amber);
  background: var(--accent-amber-soft);
}

.stat-card-icon.violet {
  color: var(--accent-violet);
  background: rgba(139, 92, 246, 0.1);
}

.stat-card-icon.cyan {
  color: var(--accent-cyan);
  background: rgba(6, 182, 212, 0.1);
}

.stat-value {
  font-size: var(--text-3xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1;
  margin-bottom: var(--space-1);
}

.stat-label {
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

.stat-trend {
  font-size: var(--text-xs);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 2px 8px;
  border-radius: var(--radius-full);
}

.stat-trend-up {
  color: var(--accent-emerald);
  background: var(--accent-emerald-soft);
}

.stat-trend-down {
  color: var(--accent-red);
  background: var(--accent-red-soft);
}

.stat-sub {
  font-size: var(--text-xs);
  color: var(--text-secondary);
  margin-top: var(--space-2);
}

.stat-sparkline {
  margin-top: var(--space-3);
  height: 40px;
}

/* --- Inputs ---------------------------------------------- */
.input-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  margin-bottom: var(--space-4);
}

.input-group label {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
}

.input,
.textarea,
.select {
  width: 100%;
  padding: 0.625rem 0.875rem;
  font-size: var(--text-sm);
  color: var(--text-primary);
  background: var(--bg-base);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  transition: all var(--duration-fast) var(--ease-out);
  outline: none;
}

.input::placeholder,
.textarea::placeholder {
  color: var(--text-muted);
}

.input:hover,
.textarea:hover,
.select:hover {
  border-color: var(--border-hover);
}

.input:focus,
.textarea:focus,
.select:focus {
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.input-error {
  border-color: var(--accent-red) !important;
  box-shadow: 0 0 0 3px var(--accent-red-soft) !important;
}

.input-error-message {
  font-size: var(--text-xs);
  color: var(--accent-red);
  min-height: 1.25em;
}

.textarea {
  min-height: 100px;
  resize: vertical;
  line-height: 1.5;
}

.select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 16 16' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M4 6l4 4 4-4' stroke='%2394a3b8' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  background-size: 16px;
  padding-right: 2.5rem;
}

/* Input with icon */
.input-icon-wrapper {
  position: relative;
}

.input-icon-wrapper .input {
  padding-left: 2.5rem;
}

.input-icon {
  position: absolute;
  left: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  height: 16px;
  color: var(--text-muted);
  pointer-events: none;
}

/* Password toggle */
.input-password-wrapper {
  position: relative;
}

.password-toggle {
  position: absolute;
  right: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: var(--text-xs);
  color: var(--text-muted);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  transition: color var(--duration-fast);
}

.password-toggle:hover {
  color: var(--text-secondary);
}

/* Search input */
.search-input {
  position: relative;
}

.search-input .input {
  padding-left: 2.5rem;
}

.search-input-icon {
  position: absolute;
  left: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  height: 16px;
  color: var(--text-muted);
  pointer-events: none;
}

/* --- Checkbox / Toggle ----------------------------------- */
.checkbox-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--text-secondary);
  cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
  appearance: none;
  width: 16px;
  height: 16px;
  border: 1px solid var(--border-hover);
  border-radius: var(--radius-sm);
  background: var(--bg-base);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
  position: relative;
  flex-shrink: 0;
}

.checkbox-label input[type="checkbox"]:checked {
  background: var(--accent-blue);
  border-color: var(--accent-blue);
}

.checkbox-label input[type="checkbox"]:checked::after {
  content: '';
  position: absolute;
  left: 4px;
  top: 1px;
  width: 5px;
  height: 9px;
  border: solid #fff;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

/* --- Checkbox List (Key Selector) ---------------------------- */
.checkbox-list {
  max-height: 220px;
  overflow-y: auto;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  background: var(--bg-base);
  padding: var(--space-1);
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.checkbox-list-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--duration-fast);
}

.checkbox-list-item:hover {
  background: var(--bg-hover);
}

.checkbox-list-item input[type="checkbox"] {
  appearance: none;
  position: relative;
  width: 14px;
  height: 14px;
  border: 1px solid var(--border-hover);
  border-radius: 3px;
  background: var(--bg-base);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
  flex-shrink: 0;
}

.checkbox-list-item input[type="checkbox"]:checked {
  background: var(--accent-blue);
  border-color: var(--accent-blue);
}

.checkbox-list-item input[type="checkbox"]:checked::after {
  content: '';
  position: absolute;
  left: 3px;
  top: 1px;
  width: 4px;
  height: 7px;
  border: solid #fff;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.checkbox-list-alias {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-primary);
  flex-shrink: 0;
  max-width: 120px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.checkbox-list-url {
  font-size: var(--text-xs);
  color: var(--text-muted);
  font-family: var(--font-mono);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1;
  min-width: 0;
}

.toggle {
  position: relative;
  width: 44px;
  height: 24px;
  flex-shrink: 0;
}

.toggle input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-slider {
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-full);
  transition: all var(--duration-fast) var(--ease-out);
  cursor: pointer;
}

.toggle-slider::before {
  content: '';
  position: absolute;
  width: 18px;
  height: 18px;
  left: 3px;
  bottom: 3px;
  background: #fff;
  border-radius: 50%;
  transition: transform var(--duration-fast) var(--ease-out);
}

.toggle input:checked + .toggle-slider {
  background: var(--accent-blue);
}

.toggle input:checked + .toggle-slider::before {
  transform: translateX(20px);
}

/* --- Badges ---------------------------------------------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 2px 10px;
  font-size: var(--text-xs);
  font-weight: 500;
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.badge-blue {
  color: var(--accent-blue);
  background: var(--accent-blue-soft);
}

.badge-emerald {
  color: var(--accent-emerald);
  background: var(--accent-emerald-soft);
}

.badge-amber {
  color: var(--accent-amber);
  background: var(--accent-amber-soft);
}

.badge-red {
  color: var(--accent-red);
  background: var(--accent-red-soft);
}

.badge-violet {
  color: var(--accent-violet);
  background: rgba(139, 92, 246, 0.1);
}

.badge-cyan {
  color: var(--accent-cyan);
  background: rgba(6, 182, 212, 0.1);
}

.badge-rose {
  color: var(--accent-rose);
  background: rgba(244, 63, 94, 0.1);
}

.badge-ghost {
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.05);
}

/* --- Filter Tabs ----------------------------------------- */
.filter-tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--border-default);
  margin-bottom: var(--space-6);
}

.filter-tab {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-muted);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  cursor: pointer;
  transition: color var(--transition-fast), border-color var(--transition-fast);
  border-radius: 0;
}

.filter-tab:hover {
  color: var(--text-primary);
}

.filter-tab.active {
  color: var(--text-primary);
  border-bottom-color: var(--accent-blue);
}

/* --- Tables ---------------------------------------------- */
.table-container {
  overflow-x: auto;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
}

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

.table th {
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  text-align: left;
  background: var(--bg-base);
  border-bottom: 1px solid var(--border-default);
  white-space: nowrap;
}

.table td {
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-sm);
  border-bottom: 1px solid var(--border-subtle);
  white-space: nowrap;
}

.table tbody tr {
  transition: background var(--duration-fast);
}

.table tbody tr:hover {
  background: var(--bg-hover);
}

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

.table-sortable th {
  cursor: pointer;
  user-select: none;
}

.table-sortable th:hover {
  color: var(--text-secondary);
}

.table-cell-mono {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
}

/* --- Modals ---------------------------------------------- */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  animation: fadeIn var(--duration-fast) var(--ease-out);
}

.modal {
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  width: 90%;
  max-width: 520px;
  max-height: 85vh;
  overflow-y: auto;
  animation: scaleIn var(--duration-normal) var(--ease-out);
}

.modal-lg {
  max-width: 640px;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-6) var(--space-6) 0;
}

.modal-header h3 {
  font-size: var(--text-lg);
  font-weight: 600;
}

.modal-close {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  color: var(--text-muted);
  transition: all var(--duration-fast);
}

.modal-close:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-primary);
}

.modal-body {
  padding: var(--space-6);
}

.modal-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-3);
  padding: 0 var(--space-6) var(--space-6);
}

/* --- Toast Container ------------------------------------- */
.toast-container {
  position: fixed;
  top: var(--space-4);
  right: var(--space-4);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  pointer-events: auto;
  min-width: 300px;
  max-width: 420px;
  animation: slideInRight var(--duration-normal) var(--ease-out);
}

.toast-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.toast-success .toast-icon { color: var(--accent-emerald); }
.toast-error .toast-icon { color: var(--accent-red); }
.toast-warning .toast-icon { color: var(--accent-amber); }
.toast-info .toast-icon { color: var(--accent-blue); }

.toast-content {
  flex: 1;
  min-width: 0;
}

.toast-title {
  font-size: var(--text-sm);
  font-weight: 600;
}

.toast-message {
  font-size: var(--text-xs);
  color: var(--text-secondary);
}

.toast-close {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  transition: all var(--duration-fast);
}

.toast-close:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-primary);
}

.toast-exit {
  animation: slideOutRight var(--duration-normal) var(--ease-out) forwards;
}

/* --- Tabs ------------------------------------------------ */
.tabs {
  display: flex;
  gap: var(--space-1);
  padding: var(--space-1);
  background: var(--bg-base);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-default);
  width: fit-content;
}

.tab {
  padding: 0.5rem 1rem;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  transition: all var(--duration-fast) var(--ease-out);
  cursor: pointer;
  white-space: nowrap;
}

.tab:hover {
  color: var(--text-primary);
}

.tab-active {
  background: var(--bg-elevated);
  color: var(--text-primary);
  box-shadow: var(--shadow-sm);
}

/* --- Skeleton Loaders ------------------------------------ */
.skeleton {
  background: var(--bg-hover);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.skeleton-text {
  height: 14px;
  border-radius: var(--radius-sm);
}

.skeleton-heading {
  height: 24px;
  width: 60%;
  border-radius: var(--radius-sm);
}

.skeleton-circle {
  border-radius: 50%;
}

.skeleton-block {
  height: 200px;
}

/* --- Pagination ------------------------------------------ */
.pagination {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.page-btn {
  padding: 0.375rem 0.625rem;
  font-size: var(--text-sm);
  color: var(--text-secondary);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  transition: all var(--duration-fast);
  min-width: 36px;
  text-align: center;
}

.page-btn:hover {
  border-color: var(--border-hover);
  color: var(--text-primary);
}

.page-active {
  background: var(--accent-blue-soft);
  border-color: var(--accent-blue);
  color: var(--accent-blue);
}

/* --- Filter Chips ---------------------------------------- */
.filter-chips {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.filter-chip {
  padding: 0.375rem 0.875rem;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--bg-sub);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-full);
  transition: all var(--duration-fast);
  cursor: pointer;
}

.filter-chip:hover {
  border-color: var(--border-hover);
  color: var(--text-primary);
}

.filter-chip-active {
  background: var(--accent-blue-soft);
  border-color: var(--accent-blue);
  color: var(--accent-blue);
}

/* --- Tag Badge ------------------------------------------- */
.tag-badge {
  display: inline-flex;
  align-items: center;
  padding: 1px 8px;
  font-size: 10px;
  font-weight: 500;
  border-radius: var(--radius-full);
  white-space: nowrap;
  line-height: 1.5;
}

/* --- Tag Input Component --------------------------------- */
.tag-input-wrapper {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  padding: var(--space-1);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  background: var(--bg-base);
  min-height: 40px;
  align-items: center;
  cursor: text;
}

.tag-input-wrapper:focus-within {
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.tag-chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 2px 8px;
  font-size: var(--text-xs);
  font-weight: 500;
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.tag-chip-remove {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  font-size: 12px;
  line-height: 1;
  opacity: 0.6;
  transition: opacity var(--duration-fast);
  cursor: pointer;
  background: none;
  border: none;
  color: inherit;
  padding: 0;
}

.tag-chip-remove:hover {
  opacity: 1;
  background: rgba(0, 0, 0, 0.12);
}

.tag-input-field {
  flex: 1;
  min-width: 80px;
  border: none;
  outline: none;
  background: transparent;
  color: var(--text-primary);
  font-size: var(--text-sm);
  padding: 2px 4px;
}

.tag-input-field::placeholder {
  color: var(--text-muted);
}

.tag-dropdown {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  right: 0;
  max-height: 200px;
  overflow-y: auto;
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  z-index: var(--z-dropdown, 100);
  padding: var(--space-1);
}

.tag-dropdown-item {
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-sm);
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--duration-fast);
}

.tag-dropdown-item:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.tag-dropdown-item.create {
  color: var(--accent-blue);
  font-style: italic;
}

/* --- Empty State ----------------------------------------- */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-16) var(--space-6);
  text-align: center;
}

.empty-state-icon {
  width: 64px;
  height: 64px;
  color: var(--text-muted);
  margin-bottom: var(--space-4);
  opacity: 0.5;
}

.empty-state-title {
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-2);
}

.empty-state-text {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  max-width: 360px;
  margin-bottom: var(--space-6);
}

/* --- Error State ----------------------------------------- */
.error-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-12) var(--space-6);
  text-align: center;
}

.error-state-icon {
  width: 48px;
  height: 48px;
  color: var(--accent-red);
  margin-bottom: var(--space-4);
  opacity: 0.7;
}

.error-state-title {
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-2);
}

.error-state-text {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin-bottom: var(--space-6);
}

/* --- Dropdown Menu --------------------------------------- */
.dropdown {
  position: relative;
  display: inline-block;
}

.dropdown-menu {
  position: absolute;
  top: calc(100% + 4px);
  right: 0;
  min-width: 200px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--space-1);
  z-index: var(--z-header);
  animation: scaleIn var(--duration-fast) var(--ease-out);
  transform-origin: top right;
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  transition: all var(--duration-fast);
  cursor: pointer;
  width: 100%;
  text-align: left;
}

.dropdown-item:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
}

.dropdown-item-danger:hover {
  background: var(--accent-red-soft);
  color: var(--accent-red);
}

.dropdown-divider {
  height: 1px;
  background: var(--border-default);
  margin: var(--space-1) 0;
}

/* --- Code Block ------------------------------------------ */
.code-block {
  background: #0d0d1a;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.code-block-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-2) var(--space-4);
  background: rgba(255, 255, 255, 0.02);
  border-bottom: 1px solid var(--border-subtle);
}

.code-block-lang {
  font-size: var(--text-xs);
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.code-block-copy {
  font-size: var(--text-xs);
  color: var(--text-muted);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast);
}

.code-block-copy:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-secondary);
}

.code-block pre {
  padding: var(--space-4);
  overflow-x: auto;
  font-size: var(--text-xs);
  line-height: 1.7;
  color: var(--text-secondary);
}

/* --- Tooltip --------------------------------------------- */
[data-tooltip] {
  position: relative;
}

[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%);
  padding: 4px 10px;
  font-size: var(--text-xs);
  font-family: var(--font-sans);
  font-weight: 500;
  color: var(--text-primary);
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--duration-fast);
  z-index: var(--z-tooltip);
}

[data-tooltip]:hover::after {
  opacity: 1;
}

/* --- Avatar ---------------------------------------------- */
.avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-sm);
  font-weight: 600;
  color: #fff;
  flex-shrink: 0;
}

.avatar-sm { width: 24px; height: 24px; font-size: var(--text-xs); }
.avatar-lg { width: 40px; height: 40px; font-size: var(--text-md); }

/* --- Status Dot ------------------------------------------ */
.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.status-online { background: var(--accent-emerald); }
.status-offline { background: var(--accent-red); }
.status-warning { background: var(--accent-amber); }

.status-pulse {
  animation: statusPulse 2s infinite;
}

/* --- Progress Bar ---------------------------------------- */
.progress-bar {
  height: 4px;
  background: var(--bg-hover);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  border-radius: var(--radius-full);
  transition: width var(--duration-slow) var(--ease-out);
}

.progress-bar-fill.blue { background: var(--accent-blue); }
.progress-bar-fill.emerald { background: var(--accent-emerald); }
.progress-bar-fill.amber { background: var(--accent-amber); }

/* --- Dividers -------------------------------------------- */
.divider {
  height: 1px;
  background: var(--border-default);
  margin: var(--space-6) 0;
}

/* --- Section Header -------------------------------------- */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-6);
}

.section-title {
  font-size: var(--text-lg);
  font-weight: 600;
}

.section-subtitle {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin-top: var(--space-1);
}

/* ============================================================
   LAYOUTS
   ============================================================ */

/* --- Public Layout ---------------------------------------- */
.public-layout {
  min-height: 100vh;
}

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

/* --- Sidebar ---------------------------------------------- */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--sidebar-width);
  background: var(--bg-sub);
  border-right: 1px solid var(--border-default);
  display: flex;
  flex-direction: column;
  z-index: var(--z-sidebar);
  transition: width var(--duration-normal) var(--ease-out);
  overflow: hidden;
}

.sidebar-header {
  padding: var(--space-4) var(--space-4) var(--space-2);
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2);
  border-radius: var(--radius-lg);
  transition: background var(--duration-fast);
  text-decoration: none;
  color: inherit;
}

.sidebar-logo:hover {
  background: rgba(255, 255, 255, 0.04);
}

.sidebar-logo-text {
  font-size: var(--text-md);
  font-weight: 700;
  letter-spacing: -0.01em;
}

.sidebar-nav {
  flex: 1;
  padding: var(--space-2) var(--space-3);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  overflow-y: auto;
}

.sidebar-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  transition: all var(--duration-fast) var(--ease-out);
  text-decoration: none;
  position: relative;
}

.sidebar-item svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.sidebar-item:hover {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-primary);
}

.sidebar-item[data-active].active,
.sidebar-item.active {
  background: var(--accent-blue-soft);
  color: var(--accent-blue);
}

.sidebar-footer {
  padding: var(--space-3);
  border-top: 1px solid var(--border-default);
}

.sidebar-user {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2);
  border-radius: var(--radius-lg);
  transition: background var(--duration-fast);
}

.sidebar-user:hover {
  background: rgba(255, 255, 255, 0.04);
}

.sidebar-user-info {
  flex: 1;
  min-width: 0;
}

.sidebar-user-name {
  line-height: 1.2;
}

.sidebar-user-role {
  line-height: 1.2;
  text-transform: capitalize;
}

.sidebar-logout {
  padding: var(--space-1);
  border-radius: var(--radius-md);
  color: var(--text-muted);
  transition: all var(--duration-fast);
  flex-shrink: 0;
}

.sidebar-logout:hover {
  background: var(--accent-red-soft);
  color: var(--accent-red);
}

.sidebar-logout svg {
  width: 18px;
  height: 18px;
}

/* --- Main Content ----------------------------------------- */
.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  min-height: 100vh;
  transition: margin-left var(--duration-normal) var(--ease-out);
}

.page-content {
  max-width: 1600px;
  padding: var(--space-8);
}

/* --- Auth Pages (Login/Register) -------------------------- */
.auth-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
  background:
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(59, 130, 246, 0.08), transparent),
    radial-gradient(ellipse 60% 40% at 80% 80%, rgba(139, 92, 246, 0.06), transparent),
    var(--bg-base);
}

.auth-card {
  width: 100%;
  max-width: 420px;
  padding: var(--space-8);
}

.auth-header {
  text-align: center;
  margin-bottom: var(--space-8);
}

.auth-logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-violet));
  border-radius: var(--radius-lg);
  color: #fff;
  font-size: var(--text-xl);
  font-weight: 700;
  margin-bottom: var(--space-4);
}

.auth-header h1 {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-2);
}

.auth-form {
  margin-bottom: var(--space-6);
}

.auth-options {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-6);
}

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

.password-strength {
  display: flex;
  gap: 4px;
  margin-top: var(--space-1);
}

.password-strength-segment {
  height: 3px;
  flex: 1;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.06);
  transition: background var(--duration-fast);
}

.password-strength-segment.weak { background: var(--accent-red); }
.password-strength-segment.fair { background: var(--accent-amber); }
.password-strength-segment.good { background: var(--accent-emerald); }

/* --- Landing Page ----------------------------------------- */
.landing-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: var(--space-4) var(--space-8);
  transition: all var(--duration-normal);
}

.landing-nav.scrolled {
  background: rgba(10, 10, 15, 0.8);
  border-bottom: 1px solid var(--border-default);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.landing-nav-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.landing-nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-lg);
  font-weight: 700;
  letter-spacing: -0.01em;
}

.landing-nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.landing-nav-link {
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  transition: all var(--duration-fast);
}

.landing-nav-link:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.04);
}

.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
  padding: var(--space-16) var(--space-6);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(59, 130, 246, 0.08), transparent),
    radial-gradient(ellipse 60% 40% at 80% 100%, rgba(139, 92, 246, 0.06), transparent),
    radial-gradient(ellipse 50% 30% at 20% 80%, rgba(6, 182, 212, 0.04), transparent);
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 4px 14px;
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--accent-blue);
  background: var(--accent-blue-soft);
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-8);
  animation: slideUp var(--duration-slow) var(--ease-out);
}

.hero-badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-blue);
  animation: pulse 2s infinite;
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: var(--space-6);
}

.hero-subtitle {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  max-width: 520px;
  margin: 0 auto var(--space-10);
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.features-section {
  max-width: 1280px;
  margin: 0 auto;
  padding: var(--space-20) var(--space-8);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
  margin-top: var(--space-10);
}

.feature-card {
  padding: var(--space-6);
  border-radius: var(--radius-xl);
}

.feature-card-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-4);
}

.feature-card-title {
  font-size: var(--text-md);
  font-weight: 600;
  margin-bottom: var(--space-2);
}

.feature-card-text {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.6;
}

.pricing-section {
  max-width: 1280px;
  margin: 0 auto;
  padding: var(--space-20) var(--space-8);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  margin-top: var(--space-10);
}

.pricing-card {
  padding: var(--space-8);
  border-radius: var(--radius-xl);
  position: relative;
}

.pricing-card-featured {
  border-color: var(--accent-blue);
  box-shadow: var(--shadow-glow-blue);
}

.pricing-card-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  padding: 4px 14px;
  font-size: var(--text-xs);
  font-weight: 600;
  color: #fff;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-violet));
  border-radius: var(--radius-full);
}

.pricing-name {
  font-size: var(--text-md);
  font-weight: 600;
  margin-bottom: var(--space-2);
}

.pricing-price {
  font-size: var(--text-4xl);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-1);
}

.pricing-period {
  font-size: var(--text-sm);
  color: var(--text-muted);
  margin-bottom: var(--space-6);
}

.pricing-features {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-bottom: var(--space-8);
}

.pricing-feature {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

.pricing-feature svg {
  width: 16px;
  height: 16px;
  color: var(--accent-emerald);
  flex-shrink: 0;
}

.cta-section {
  text-align: center;
  padding: var(--space-20) var(--space-8);
  background:
    radial-gradient(ellipse 60% 60% at 50% 50%, rgba(59, 130, 246, 0.06), transparent);
}

.footer {
  border-top: 1px solid var(--border-default);
  padding: var(--space-12) var(--space-8);
}

.footer-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer-copy {
  font-size: var(--text-sm);
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  gap: var(--space-6);
}

.footer-links a {
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

.footer-links a:hover {
  color: var(--text-primary);
}

/* --- Chart Styles ----------------------------------------- */
.chart-svg {
  display: block;
  width: 100%;
}

.chart-label {
  font-family: var(--font-sans);
  font-size: 11px;
  fill: var(--text-muted);
  user-select: none;
}

.chart-line {
  transition: opacity var(--duration-fast);
}

.chart-dot {
  transition: r var(--duration-fast);
}

.chart-dot:hover {
  r: 5;
}

.chart-bar {
  transition: opacity var(--duration-fast), fill var(--duration-fast);
}

.chart-bar:hover {
  opacity: 0.8;
}

.chart-bar-group:hover .chart-bar {
  opacity: 0.8;
}

.chart-donut-segment {
  transition: opacity var(--duration-fast);
  cursor: pointer;
}

.chart-donut-segment:hover {
  opacity: 0.85;
}

.chart-center-value {
  font-size: 20px;
  font-weight: 700;
  fill: var(--text-primary);
  font-family: var(--font-sans);
}

.chart-center-label {
  font-size: 11px;
  fill: var(--text-muted);
  font-family: var(--font-sans);
}

.chart-donut-wrapper {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
}

.chart-legend {
  min-width: 140px;
}

.chart-legend-item {
  padding: 2px 0;
}

.chart-sparkline {
  display: block;
}

/* --- Slider (Range Input) --------------------------------- */
input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  background: var(--bg-hover);
  border-radius: var(--radius-full);
  outline: none;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent-blue);
  border: 2px solid var(--bg-base);
  cursor: pointer;
  box-shadow: var(--shadow-md);
  transition: transform var(--duration-fast);
}

input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.15);
}

/* --- Model Card (Admin) ----------------------------------- */
.model-card {
  padding: var(--space-5);
  border-radius: var(--radius-lg);
}

.model-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-4);
}

.model-card-name {
  font-size: var(--text-md);
  font-weight: 600;
}

.model-card-provider {
  margin-top: var(--space-1);
}

.model-card-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.model-card-stat {
  padding: var(--space-3);
  background: var(--bg-base);
  border-radius: var(--radius-md);
}

.model-card-stat-label {
  font-size: var(--text-xs);
  color: var(--text-muted);
  margin-bottom: var(--space-1);
}

.model-card-stat-value {
  font-size: var(--text-md);
  font-weight: 600;
  font-family: var(--font-mono);
}

/* --- Page Header ------------------------------------------ */
.page-header {
  margin-bottom: var(--space-8);
}

.page-title {
  font-size: var(--text-2xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-1);
}

.page-description {
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

/* --- Responsive: Tablet (≤1024px) ------------------------- */
@media (max-width: 1024px) {
  /* Sidebar collapse */
  .sidebar {
    width: var(--sidebar-collapsed);
  }
  .sidebar-logo-text,
  .sidebar-item span,
  .sidebar-user-info,
  .sidebar-user .avatar {
    display: none;
  }
  .sidebar-item {
    justify-content: center;
    padding: var(--space-3);
  }
  .sidebar-nav {
    padding: var(--space-2);
  }
  .main-content {
    margin-left: var(--sidebar-collapsed);
  }

  /* Landing */
  .features-grid,
  .pricing-grid {
    grid-template-columns: 1fr;
  }

  /* Stat cards: 2 per row */
  .stat-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Admin model cards */
  .admin-models-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* --- Responsive: Mobile (≤768px) -------------------------- */
@media (max-width: 768px) {
  /* === Sidebar & Layout === */
  .sidebar {
    display: none;
  }
  .main-content {
    margin-left: 0;
  }
  .page-content {
    padding: var(--space-3);
  }

  /* === Page headers === */
  .page-header,
  .section-header {
    flex-direction: column;
    gap: var(--space-3);
    align-items: flex-start;
  }
  .section-header .btn,
  .section-header .tabs {
    align-self: flex-start;
  }

  /* === Stat cards: full width === */
  .stat-grid {
    grid-template-columns: 1fr;
  }

  /* === Tables: horizontal scroll === */
  .table-container {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
  .table {
    min-width: 600px;
  }

  /* === Tabs: scrollable === */
  .tabs {
    overflow-x: auto;
    flex-wrap: nowrap;
    -webkit-overflow-scrolling: touch;
  }

  /* === Two-column content layouts → stack === */
  .stack-on-mobile {
    grid-template-columns: 1fr !important;
  }
  [style*="grid-template-columns:1fr 320px"],
  [style*="grid-template-columns: 1fr 320px"],
  [style*="grid-template-columns:1fr 1fr"],
  [style*="grid-template-columns: 1fr 1fr"] {
    grid-template-columns: 1fr !important;
  }

  /* === Landing page === */
  .hero-title {
    font-size: 2.25rem;
  }
  .hero-actions {
    flex-direction: column;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .landing-nav-links {
    display: none;
  }
  .features-grid,
  .pricing-grid {
    grid-template-columns: 1fr;
  }
  .cta-section {
    padding: var(--space-10) var(--space-4);
  }
  .footer-inner {
    flex-direction: column;
    gap: var(--space-3);
    text-align: center;
  }
  .footer-links {
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--space-2);
  }

  /* === Auth pages === */
  .auth-card {
    padding: var(--space-6);
  }
  .auth-page {
    padding: var(--space-4);
  }

  /* === Dashboard === */
  .billing-balance-card {
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-5);
  }
  .billing-balance-left {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-3);
  }
  .billing-balance-value {
    font-size: var(--text-3xl);
  }

  /* === Admin cards: full width === */
  .admin-models-grid {
    grid-template-columns: 1fr;
  }
  .am-stats {
    grid-template-columns: repeat(3, 1fr);
  }
  .am-actions {
    flex-wrap: wrap;
    gap: var(--space-1);
  }

  /* === Models browse page === */
  #models-grid {
    grid-template-columns: 1fr !important;
  }

  /* === Usage page filter bar === */
  #models-filter-bar {
    overflow-x: auto;
    flex-wrap: nowrap;
    -webkit-overflow-scrolling: touch;
    padding-bottom: var(--space-1);
  }

  /* === Settings === */
  .settings-layout {
    max-width: 100%;
  }
  .settings-card {
    padding: var(--space-4);
  }
  .settings-toggle-row {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
  }

  /* === Modals: full-width, bottom sheet === */
  .modal-container {
    padding: var(--space-3);
    align-items: flex-end;
  }
  .modal {
    max-width: 100%;
    margin: 0;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    max-height: 85vh;
  }

  /* === Forms: single-column grids === */
  [style*="grid-template-columns:1fr 1fr"],
  [style*="grid-template-columns: 1fr 1fr"],
  [style*="grid-template-columns:1fr 1fr 1fr"],
  [style*="grid-template-columns: 1fr 1fr 1fr"] {
    grid-template-columns: 1fr !important;
  }

  /* === Keys page === */
  .keys-header {
    flex-wrap: wrap;
  }

  /* === Playground === */
  .playground-output-toolbar {
    flex-wrap: wrap;
    gap: var(--space-2);
  }

  /* === Pagination === */
  .pagination {
    flex-wrap: wrap;
    gap: var(--space-1);
  }

  /* === Search/filter inputs === */
  .search-input .input {
    width: 160px;
  }

  /* === Toasts: full width on mobile === */
  .toast-container {
    left: var(--space-3);
    right: var(--space-3);
  }
  .toast {
    width: 100%;
  }

  /* === Modal footer: wrap on small screens === */
  .modal-footer {
    flex-wrap: wrap;
    gap: var(--space-2);
    padding: 0 var(--space-4) var(--space-4);
  }

  /* === Modal header === */
  .modal-header {
    padding: var(--space-4) var(--space-4) 0;
  }

  /* === Charts: reduce height === */
  [id^="chart-"] {
    min-height: 180px !important;
  }
}

/* ============================================================
   Billing Page
   ============================================================ */

.billing-balance-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-8);
  background: linear-gradient(135deg, rgba(59,130,246,0.08), rgba(139,92,246,0.08));
  border: 1px solid rgba(59,130,246,0.12);
  border-radius: var(--radius-xl);
  gap: var(--space-6);
}

.billing-balance-left {
  display: flex;
  align-items: center;
  gap: var(--space-5);
}

.billing-balance-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-violet));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  flex-shrink: 0;
}

.billing-balance-value {
  font-size: var(--text-5xl);
  font-weight: 800;
  letter-spacing: -0.03em;
  font-family: var(--font-mono);
}

.billing-gift-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  padding: var(--space-5) var(--space-6);
  background: var(--bg-sub);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
}

.billing-gift-left {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-shrink: 0;
}

.billing-gift-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--accent-emerald-soft);
  color: var(--accent-emerald);
  display: flex;
  align-items: center;
  justify-content: center;
}

.billing-gift-input-wrap {
  display: flex;
  gap: var(--space-3);
  align-items: center;
}

.billing-gift-input-wrap .input {
  width: 260px;
  font-size: var(--text-sm);
  padding: 0.5rem 0.75rem;
}

/* Packages Grid */
.billing-packages {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
}

.billing-package-card {
  position: relative;
  text-align: center;
  padding: var(--space-6);
  background: var(--bg-sub);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-out);
}

.billing-package-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.billing-package-featured {
  border-color: rgba(59,130,246,0.25);
  background: linear-gradient(180deg, rgba(59,130,246,0.06), rgba(139,92,246,0.03));
  box-shadow: var(--shadow-glow-blue);
}

.billing-package-badge {
  position: absolute;
  top: -10px;
  left: 50%;
  transform: translateX(-50%);
  padding: 2px 12px;
  font-size: var(--text-xs);
  font-weight: 600;
  color: #fff;
  background: linear-gradient(135deg, var(--accent-emerald), #059669);
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.billing-package-icon {
  width: 44px;
  height: 44px;
  margin: 0 auto var(--space-3);
  border-radius: var(--radius-md);
  background: rgba(255,255,255,0.05);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-blue);
}

.billing-package-featured .billing-package-icon {
  color: var(--accent-violet);
}

.billing-package-amount {
  font-size: var(--text-2xl);
  font-weight: 700;
  margin-bottom: var(--space-1);
  font-family: var(--font-mono);
}

.billing-package-label {
  font-size: var(--text-sm);
  font-weight: 600;
  margin-bottom: var(--space-1);
}

.billing-package-desc {
  font-size: var(--text-xs);
  color: var(--text-muted);
}

/* Modal package buttons */
.billing-modal-pkg {
  display: flex !important;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
}

@media (max-width: 1024px) {
  .billing-packages {
    grid-template-columns: repeat(2, 1fr);
  }
  .billing-balance-card {
    flex-direction: column;
    align-items: flex-start;
  }
  .billing-gift-card {
    flex-direction: column;
    align-items: flex-start;
  }
  .billing-gift-input-wrap {
    width: 100%;
  }
  .billing-gift-input-wrap .input {
    flex: 1;
  }
}

@media (max-width: 768px) {
  .billing-packages {
    grid-template-columns: 1fr;
  }
  .billing-balance-value {
    font-size: var(--text-3xl);
  }
}

/* ============================================================
   Settings Page
   ============================================================ */

.settings-layout {
  max-width: 680px;
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.settings-card {
  padding: var(--space-6);
}

.settings-card-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
}

.settings-card-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background: var(--accent-blue-soft);
  color: var(--accent-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.settings-card-icon.danger {
  background: var(--accent-red-soft);
  color: var(--accent-red);
}

.settings-card-title {
  font-size: var(--text-lg);
  font-weight: 600;
}

.settings-avatar {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-violet));
  color: #fff;
  font-size: var(--text-xl);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.settings-toggles {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.settings-toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--border-subtle);
}

.settings-toggle-row:last-child {
  border-bottom: none;
}

.settings-toggle-info {
  flex: 1;
  min-width: 0;
  padding-right: var(--space-4);
}

.settings-danger-card {
  border-color: rgba(239,68,68,0.2);
}

@media (max-width: 768px) {
  .settings-layout {
    max-width: 100%;
  }
}

/* ============================================================
   Admin Model Cards
   ============================================================ */

.admin-models-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: var(--space-4);
}

.admin-model-card {
  background: var(--bg-sub);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  transition: all var(--duration-normal) var(--ease-out);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.admin-model-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-md);
}

/* header row */
.am-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
}

.am-head-left {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  min-width: 0;
  flex-wrap: wrap;
}

.am-name {
  font-weight: 700;
  font-size: var(--text-sm);
  color: var(--text-primary);
}

.am-id {
  font-size: var(--text-xs);
  color: var(--text-muted);
  font-family: var(--font-mono);
}

/* meta row (tags, key count) */
.am-meta {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  flex-wrap: wrap;
}

.admin-card-meta-item {
  font-size: var(--text-xs);
  color: var(--text-muted);
  margin-right: var(--space-1);
}

/* stats grid */
.am-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(80px, 1fr));
  gap: var(--space-2);
  padding: var(--space-3) 0;
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.am-stat {
  text-align: center;
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  background: var(--bg-base);
}

.am-stat-label {
  font-size: var(--text-xs);
  color: var(--text-muted);
  margin-bottom: 2px;
}

.am-stat-value {
  font-size: var(--text-sm);
  font-weight: 600;
  font-family: var(--font-mono);
  color: var(--text-primary);
}

.am-stat-accent .am-stat-value {
  color: var(--accent-emerald);
}

.am-stat-online .am-stat-value { color: var(--accent-emerald); }
.am-stat-warning .am-stat-value { color: var(--accent-amber); }
.am-stat-offline .am-stat-value { color: var(--accent-red); }

/* actions */
.am-actions {
  display: flex;
  gap: var(--space-1);
}

/* --- Model Browse Card (User-facing) ----------------------- */
.model-browse-card {
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-default);
  background: var(--bg-sub);
  transition: border-color var(--duration-normal) var(--ease-out),
              box-shadow var(--duration-normal) var(--ease-out);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.model-browse-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-sm);
}

/* header row */
.mb-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
}

.mb-head-left {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  min-width: 0;
}

.mb-name {
  font-weight: 700;
  font-size: var(--text-sm);
  color: var(--text-primary);
}

.mb-head-status {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-shrink: 0;
  font-size: var(--text-xs);
}

/* description */
.mb-desc {
  font-size: var(--text-xs);
  color: var(--text-secondary);
  line-height: 1.5;
  margin: 0;
}

/* tags */
.mb-tags {
  display: flex;
  gap: var(--space-1);
  flex-wrap: wrap;
}

/* price row — three equal columns, divider-separated */
.mb-prices {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: var(--space-3);
  padding: var(--space-3) 0;
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

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

.mb-price-label {
  display: block;
  font-size: var(--text-xs);
  color: var(--text-muted);
  margin-bottom: 2px;
}

.mb-price-value {
  font-size: var(--text-sm);
  font-weight: 600;
  font-family: var(--font-mono);
  color: var(--text-primary);
}

.mb-price-value i {
  font-style: normal;
  font-weight: 400;
  font-size: var(--text-xs);
  color: var(--text-muted);
}

.mb-price-accent .mb-price-value {
  color: var(--accent-emerald);
}

/* meta row — inline muted items */
.mb-metas {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
  font-size: var(--text-xs);
}

.mb-meta {
  color: var(--text-secondary);
  font-family: var(--font-mono);
}

.mb-meta-label {
  color: var(--text-muted);
  font-family: inherit;
}

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

/* --- Announcement --------------------------------------- */
.announcement-empty {
  text-align: center;
  padding: var(--space-8) var(--space-4);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
}

.announcement-empty-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, rgba(59,130,246,0.08), rgba(139,92,246,0.08));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  margin-bottom: var(--space-2);
}

.announcement-empty-title {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
}

.announcement-empty-sub {
  font-size: var(--text-xs);
  color: var(--text-muted);
}

.announcement-time {
  font-size: var(--text-xs);
  color: var(--text-muted);
  white-space: nowrap;
  flex-shrink: 0;
  padding-top: 2px;
}