/* ===================================
   MODERN SETTINGS DRAWER SYSTEM
   Unified, integrated settings editing
   =================================== */

.settings-drawer {
  position: fixed;
  right: -100%;
  top: 0;
  height: 100%;
  width: 100%;
  max-width: 500px;
  background: var(--bg-primary);
  border-left: 1px solid var(--border);
  box-shadow: -8px 0 32px rgba(0, 0, 0, 0.12);
  z-index: 900;
  display: flex;
  flex-direction: column;
  transition: right 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  overflow: hidden;
}

.settings-drawer.open {
  right: 0;
}

.settings-drawer-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0);
  z-index: 850;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.settings-drawer-backdrop.visible {
  background: rgba(0, 0, 0, 0.4);
  opacity: 1;
  pointer-events: auto;
}

/* Header */
.settings-drawer-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
}

.settings-drawer-header h2 {
  margin: 0;
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 12px;
}

.settings-drawer-header svg {
  width: 20px;
  height: 20px;
  color: var(--text-secondary);
}

.settings-drawer-close {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  transition: all 0.2s ease;
  font-size: 20px;
  line-height: 1;
}

.settings-drawer-close:hover {
  background: var(--bg-secondary);
  color: var(--text-primary);
}

/* Content */
.settings-drawer-content {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
}

.settings-drawer-content::-webkit-scrollbar {
  width: 6px;
}

.settings-drawer-content::-webkit-scrollbar-track {
  background: transparent;
}

.settings-drawer-content::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}

.settings-drawer-content::-webkit-scrollbar-thumb:hover {
  background: var(--text-secondary);
}

/* Form Groups */
.settings-drawer-form-group {
  margin-bottom: 24px;
}

.settings-drawer-form-group:last-child {
  margin-bottom: 0;
}

.settings-drawer-label {
  display: block;
  margin-bottom: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.settings-drawer-input,
.settings-drawer-select,
.settings-drawer-textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 14px;
  font-family: inherit;
  transition: all 0.2s ease;
}

.settings-drawer-input:focus,
.settings-drawer-select:focus,
.settings-drawer-textarea:focus {
  outline: none;
  border-color: var(--accent);
  background: var(--bg-secondary);
  box-shadow: 0 0 0 3px rgba(var(--accent-rgb), 0.1);
}

.settings-drawer-textarea {
  resize: vertical;
  min-height: 100px;
}

.settings-drawer-hint {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  color: var(--text-secondary);
}

.settings-drawer-hint.error {
  color: #ef4444;
}

/* Inline Toggle */
.settings-drawer-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 0;
}

.settings-drawer-toggle-label {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.settings-drawer-toggle-label strong {
  color: var(--text-primary);
  font-size: 14px;
  font-weight: 500;
}

.settings-drawer-toggle-label small {
  color: var(--text-secondary);
  font-size: 12px;
}

.settings-drawer-toggle input[type="checkbox"] {
  width: 44px;
  height: 24px;
  cursor: pointer;
  accent-color: var(--accent);
}

/* Select Grid */
.settings-drawer-select-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-top: 8px;
}

.settings-drawer-select-item {
  padding: 12px;
  border: 2px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
  text-align: center;
  transition: all 0.2s ease;
  background: var(--bg-secondary);
}

.settings-drawer-select-item:hover {
  border-color: var(--accent);
  background: var(--bg-secondary);
}

.settings-drawer-select-item.active {
  border-color: var(--accent);
  background: rgba(var(--accent-rgb), 0.1);
  color: var(--accent);
  font-weight: 500;
}

.settings-drawer-select-item-icon {
  display: block;
  margin-bottom: 6px;
  font-size: 20px;
}

.settings-drawer-select-item-text {
  font-size: 12px;
  display: block;
}

/* Color Picker */
.settings-drawer-color-group {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-top: 8px;
}

.settings-drawer-color-item {
  width: 100%;
  aspect-ratio: 1;
  border-radius: 12px;
  border: 3px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
  position: relative;
}

.settings-drawer-color-item:hover {
  transform: scale(1.05);
}

.settings-drawer-color-item.active {
  border-color: var(--text-primary);
  box-shadow: 0 0 12px rgba(0, 0, 0, 0.2);
}

/* Preview Section */
.settings-drawer-preview {
  margin: 24px 0;
  padding: 16px;
  background: var(--bg-secondary);
  border-radius: 12px;
  border: 1px solid var(--border);
}

.settings-drawer-preview-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 12px;
}

.settings-drawer-preview-content {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  min-height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
}

/* Footer */
.settings-drawer-footer {
  padding: 20px 24px;
  border-top: 1px solid var(--border);
  display: flex;
  gap: 12px;
  flex-shrink: 0;
  background: var(--bg-secondary);
}

.settings-drawer-footer button {
  flex: 1;
  padding: 10px 16px;
  border: none;
  border-radius: 8px;
  font-weight: 500;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.settings-drawer-footer .btn-primary {
  background: var(--accent);
  color: white;
}

.settings-drawer-footer .btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

.settings-drawer-footer .btn-primary:active {
  transform: translateY(0);
}

.settings-drawer-footer .btn-ghost {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-primary);
}

.settings-drawer-footer .btn-ghost:hover {
  background: var(--bg-primary);
}

/* Loading State */
.settings-drawer.loading .settings-drawer-content::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 24px;
  height: 24px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: translate(-50%, -50%) rotate(360deg); }
}

/* Validation */
.settings-drawer-form-group.error .settings-drawer-input,
.settings-drawer-form-group.error .settings-drawer-select,
.settings-drawer-form-group.error .settings-drawer-textarea {
  border-color: #ef4444;
}

.settings-drawer-form-group.error .settings-drawer-hint {
  color: #ef4444;
}

/* Success State */
.settings-drawer-success {
  padding: 12px 16px;
  background: #ecfdf5;
  border: 1px solid #d1fae5;
  border-radius: 8px;
  color: #065f46;
  font-size: 13px;
  margin-bottom: 16px;
  display: flex;
  gap: 8px;
  align-items: center;
}

.settings-drawer-success svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

/* Responsive */
@media (max-width: 768px) {
  .settings-drawer {
    max-width: 100%;
  }

  .settings-drawer-select-grid {
    grid-template-columns: 1fr;
  }

  .settings-drawer-color-group {
    grid-template-columns: repeat(5, 1fr);
  }

  .settings-drawer-footer {
    flex-direction: column-reverse;
  }

  .settings-drawer-footer button {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .settings-drawer-header,
  .settings-drawer-content,
  .settings-drawer-footer {
    padding: 16px;
  }

  .settings-drawer-color-group {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* Animation entrance */
@keyframes slideInRight {
  from {
    right: -100%;
    opacity: 0;
  }
  to {
    right: 0;
    opacity: 1;
  }
}

.settings-drawer.open {
  animation: slideInRight 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Accessibility */
.settings-drawer:focus-within {
  box-shadow: -8px 0 32px rgba(0, 0, 0, 0.12), inset 0 0 0 2px var(--accent);
}

@media (prefers-reduced-motion: reduce) {
  .settings-drawer,
  .settings-drawer-backdrop,
  .settings-drawer-color-item {
    transition: none;
    animation: none;
  }
}