/* ==========================================================================
   Component Styles - Buttons, Cards, Forms, Tags, Modals, Tables
   ========================================================================== */

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: var(--font-size-base);
  font-weight: 500;
  font-family: inherit;
  text-decoration: none;
  transition: all var(--transition-base);
  white-space: nowrap;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

.btn:active {
  transform: translateY(0);
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

/* Button variants */
.btn-primary {
  background: var(--gradient-primary);
  color: var(--color-white);
}

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

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

.btn-warning {
  background: var(--color-warning);
  color: var(--color-gray-900);
}

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

.btn-outline {
  background: transparent;
  border: 1px solid var(--color-gray-400);
  color: var(--color-gray-700);
}

.btn-outline:hover {
  background: var(--color-gray-100);
}

/* Button sizes */
.btn-sm {
  padding: 0.4rem 0.8rem;
  font-size: var(--font-size-sm);
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: var(--font-size-lg);
}

.btn-block {
  width: 100%;
}

/* --------------------------------------------------------------------------
   Cards
   -------------------------------------------------------------------------- */
.card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

.card-header {
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--color-gray-400);
  background: var(--color-gray-100);
}

.card-body {
  padding: var(--spacing-xl);
}

.card-footer {
  padding: var(--spacing-lg);
  border-top: 1px solid var(--color-gray-400);
  background: var(--color-gray-100);
}

/* Stat card variant */
.stat-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-base);
}

.stat-card:hover {
  transform: translateY(-2px);
}

.stat-number {
  font-size: var(--font-size-2xl);
  font-weight: bold;
  color: var(--color-primary);
}

.stat-label {
  color: var(--color-gray-600);
  margin-top: var(--spacing-sm);
}

/* Form card variant */
.form-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-md);
  margin-bottom: var(--spacing-xl);
}

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

.form-group label {
  display: block;
  margin-bottom: var(--spacing-sm);
  font-weight: 500;
  color: var(--color-gray-800);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--color-gray-400);
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
  font-family: inherit;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.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 small {
  display: block;
  margin-top: var(--spacing-xs);
  color: var(--color-gray-600);
  font-size: var(--font-size-sm);
}

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

/* Inline edit input */
.edit-input {
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-sm);
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: var(--font-size-base);
  width: 100%;
}

.edit-buttons {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-sm);
}

/* Input mode toggle */
.input-mode-toggle {
  display: flex;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
  background: var(--color-gray-100);
  padding: var(--spacing-xs);
  border-radius: var(--radius-md);
}

.mode-button {
  flex: 1;
  padding: var(--spacing-sm) var(--spacing-md);
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: var(--font-size-base);
  font-weight: 500;
  transition: all var(--transition-base);
  background: transparent;
  color: var(--color-gray-600);
}

.mode-button.active {
  background: var(--color-white);
  color: var(--color-gray-800);
  box-shadow: var(--shadow-sm);
}

/* --------------------------------------------------------------------------
   Tags
   -------------------------------------------------------------------------- */
.tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

.tag {
  background: var(--color-gray-300);
  color: var(--color-gray-700);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 500;
}

/* Tag selector (clickable) */
.tag-selector {
  background: var(--color-gray-100);
  color: var(--color-gray-700);
  padding: 0.4rem 0.8rem;
  border: 1px solid var(--color-gray-400);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.tag-selector:hover {
  background: var(--color-gray-300);
  transform: translateY(-1px);
}

.tag-selector.selected {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

/* Selected tag (removable) */
.selected-tag {
  display: inline-flex;
  align-items: center;
  background: var(--color-primary);
  color: var(--color-white);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 500;
  margin-right: var(--spacing-sm);
  margin-bottom: var(--spacing-xs);
}

.selected-tag button {
  margin-left: var(--spacing-xs);
  background: none;
  border: none;
  color: inherit;
  cursor: pointer;
  font-size: 1rem;
  line-height: 1;
}

/* --------------------------------------------------------------------------
   Tables
   -------------------------------------------------------------------------- */
.table-container {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.table-header {
  background: var(--color-gray-100);
  padding: var(--spacing-md) var(--spacing-lg);
  border-bottom: 1px solid var(--color-gray-400);
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

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

.data-table th,
.data-table td {
  padding: var(--spacing-md) var(--spacing-lg);
  text-align: left;
  border-bottom: 1px solid var(--color-gray-300);
}

.data-table th {
  background: var(--color-gray-100);
  font-weight: 600;
  color: var(--color-gray-700);
}

.data-table tr:hover {
  background: var(--color-gray-100);
}

.data-table .url-cell {
  max-width: 300px;
  word-break: break-all;
}

.data-table .short-url {
  color: var(--color-primary);
  font-weight: 500;
}

.data-table .actions {
  display: flex;
  gap: var(--spacing-sm);
  align-items: center;
}

/* --------------------------------------------------------------------------
   Messages / Alerts
   -------------------------------------------------------------------------- */
.message {
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  margin-top: var(--spacing-md);
}

.message.success {
  background: #d4edda;
  color: #155724;
  border: 1px solid #c3e6cb;
}

.message.error {
  background: #f8d7da;
  color: #721c24;
  border: 1px solid #f5c6cb;
}

.message.warning {
  background: #fff3cd;
  color: #856404;
  border: 1px solid #ffeeba;
}

.message.info {
  background: #d1ecf1;
  color: #0c5460;
  border: 1px solid #bee5eb;
}

/* --------------------------------------------------------------------------
   Toast Notifications
   -------------------------------------------------------------------------- */
.toast {
  position: fixed;
  top: 20px;
  right: 20px;
  background: var(--color-success);
  color: var(--color-white);
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  z-index: 1001;
  box-shadow: var(--shadow-lg);
}

.toast.error {
  background: var(--color-danger);
}

.toast.warning {
  background: var(--color-warning);
  color: var(--color-gray-900);
}

/* --------------------------------------------------------------------------
   Loading States
   -------------------------------------------------------------------------- */
.loading {
  text-align: center;
  padding: var(--spacing-xl);
  color: var(--color-gray-600);
}

.no-data {
  text-align: center;
  padding: 3rem;
  color: var(--color-gray-500);
}

/* --------------------------------------------------------------------------
   URL Selector (for create page)
   -------------------------------------------------------------------------- */
.url-selector {
  max-height: 200px;
  overflow-y: auto;
  border: 1px solid var(--color-gray-400);
  border-radius: var(--radius-md);
  background: var(--color-white);
}

.url-option {
  padding: 0.75rem;
  border-bottom: 1px solid var(--color-gray-300);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.url-option:hover {
  background: var(--color-gray-100);
}

.url-option:last-child {
  border-bottom: none;
}

.url-option.selected {
  background: #e3f2fd;
  border-color: #2196f3;
}

.url-option-title {
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
  color: var(--color-gray-800);
}

.url-option-url {
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
  word-break: break-all;
}

.url-option-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-top: var(--spacing-sm);
}

.url-option-tag {
  background: var(--color-gray-300);
  color: var(--color-gray-700);
  padding: 0.15rem 0.4rem;
  border-radius: 10px;
  font-size: 0.7rem;
  font-weight: 500;
}

/* --------------------------------------------------------------------------
   Preview
   -------------------------------------------------------------------------- */
.preview {
  background: var(--color-gray-100);
  border: 1px solid var(--color-gray-400);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  margin-top: var(--spacing-md);
}

.preview pre {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-all;
}