/* NAI Official Settings UI Styles
 * 1:1 replication of NovelAI official settings interface
 * Extracted from official HTML snapshot */

/* === MAIN CONTAINER === */
.settings-container {
  display: flex;
  height: 100%;
  background: var(--bg-primary, #13152c);
}

/* === SIDEBAR === */
.settings-sidebar {
  width: 200px;
  background: var(--bg-secondary, #1a1b26);
  border-right: 1px solid var(--border-color, #2e3141);
  padding: 16px 0;
  overflow-y: auto;
}

.settings-category {
  padding: 12px 20px;
  cursor: pointer;
  transition: background 0.2s;
  color: var(--text-primary, #ffffff);
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.settings-category:hover {
  background: var(--bg-hover, #252736);
}

.settings-category.active {
  background: var(--bg-active, #2e3141);
  font-weight: 600;
  border-left: 3px solid var(--accent-color, #4a9eff);
}

.settings-category-icon {
  width: 16px;
  height: 16px;
}

/* === CONTENT AREA === */
.settings-content {
  flex: 1;
  padding: 24px;
  overflow-y: auto;
}

.settings-section {
  margin-bottom: 32px;
}

.settings-section-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-primary, #ffffff);
}

.settings-section-description {
  font-size: 14px;
  color: var(--text-secondary, #9ca3af);
  margin-bottom: 16px;
  line-height: 1.5;
}

/* === SETTING ITEMS === */
.settings-section-items {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.settings-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid var(--border-light, #252736);
}

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

.settings-item-label {
  flex: 1;
}

.settings-item-label-text {
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 4px;
  color: var(--text-primary, #ffffff);
}

.settings-item-description {
  font-size: 12px;
  color: var(--text-secondary, #9ca3af);
  line-height: 1.4;
}

.settings-item-control {
  margin-left: 16px;
  flex-shrink: 0;
}

/* === TOGGLE SWITCH === */
.settings-toggle {
  position: relative;
  width: 44px;
  height: 24px;
  background: var(--toggle-bg-off, #374151);
  border-radius: 12px;
  cursor: pointer;
  transition: background 0.2s;
}

.settings-toggle.on {
  background: var(--toggle-bg-on, #4a9eff);
}

.settings-toggle-knob {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 20px;
  height: 20px;
  background: white;
  border-radius: 50%;
  transition: transform 0.2s;
  box-shadow: 0 1px 3px rgba(0,0,0,0.3);
}

.settings-toggle.on .settings-toggle-knob {
  transform: translateX(20px);
}

/* === SELECT DROPDOWN === */
.settings-select {
  min-width: 200px;
  padding: 8px 12px;
  background: var(--input-bg, #13152c);
  border: 1px solid var(--border-color, #2e3141);
  border-radius: 6px;
  color: var(--text-primary, #ffffff);
  font-size: 14px;
  cursor: pointer;
  font-family: inherit;
}

.settings-select:hover {
  border-color: var(--accent-color, #4a9eff);
}

.settings-select:focus {
  outline: none;
  border-color: var(--accent-color, #4a9eff);
  box-shadow: 0 0 0 2px rgba(74, 158, 255, 0.2);
}

/* === INPUT FIELD === */
.settings-input {
  min-width: 300px;
  padding: 8px 12px;
  background: var(--input-bg, #13152c);
  border: 1px solid var(--border-color, #2e3141);
  border-radius: 6px;
  color: var(--text-primary, #ffffff);
  font-size: 14px;
  font-family: inherit;
}

.settings-input:hover {
  border-color: var(--accent-color, #4a9eff);
}

.settings-input:focus {
  outline: none;
  border-color: var(--accent-color, #4a9eff);
  box-shadow: 0 0 0 2px rgba(74, 158, 255, 0.2);
}

.settings-input.invalid {
  border-color: var(--danger-border, #dc2626);
}

.settings-input::placeholder {
  color: var(--text-secondary, #6b7280);
}

/* === READONLY FIELD === */
.settings-readonly {
  font-size: 14px;
  color: var(--text-secondary, #9ca3af);
  font-family: 'Courier New', monospace;
  padding: 4px 0;
}

/* === RESPONSIVE === */
@media (max-width: 768px) {
  .settings-container {
    flex-direction: column;
  }
  
  .settings-sidebar {
    width: 100%;
    border-right: none;
    border-bottom: 1px solid var(--border-color, #2e3141);
    display: flex;
    overflow-x: auto;
    padding: 8px;
  }
  
  .settings-category {
    white-space: nowrap;
    padding: 8px 16px;
  }
  
  .settings-category.active {
    border-left: none;
    border-bottom: 3px solid var(--accent-color, #4a9eff);
  }
  
  .settings-content {
    padding: 16px;
  }
  
  .settings-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
  
  .settings-item-control {
    margin-left: 0;
    width: 100%;
  }
  
  .settings-select,
  .settings-input {
    width: 100%;
    min-width: 0;
  }
}

/* === VIEW ROUTING === */
.settings-page-shell {
  display: flex;
  flex-direction: column;
  flex: 1 1 auto;
  min-width: 0;
  min-height: 0;
}

.settings-page-header {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 56px;
  padding: 10px 16px;
  border-bottom: 1px solid var(--border-color, #2e3141);
  background: var(--bg-secondary, #1a1b26);
}

.settings-page-title {
  margin: 0;
  color: var(--text-primary, #ffffff);
  font-size: 18px;
  font-weight: 600;
}

.settings-back-btn {
  width: 36px;
  height: 36px;
  padding: 0;
  border: 1px solid var(--border-color, #3e4151);
  border-radius: 6px;
  background: var(--button-bg, #2e3141);
  color: var(--text-primary, #ffffff);
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
}

.settings-back-btn:hover {
  border-color: var(--accent-color, #4a9eff);
  background: var(--button-hover, #3a3c4e);
}