/* ============================================================
 * File: css/components.css
 * Module: Global UI Components
 * Purpose: Buttons, inputs, textareas, selects, cards, tabs,
 *          toasts, badges, tooltips, empty states, alerts.
 * Depends on: variables.css, themes.css
 * Notes:
 *   Tool-specific styles live in css/tools/*.css.
 *   Shared tool patterns live in css/tools/_shared.css.
 * ============================================================ */

/* ------------------------------------------------------------
 * 1. BUTTONS
 * ------------------------------------------------------------ */

.dt-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);

  height: var(--control-height-md);
  padding: 0 var(--space-3);

  font-family: var(--font-sans);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  line-height: 1;

  border-radius: var(--radius-md);
  border: var(--border-thin) solid transparent;

  background-color: transparent;
  color: var(--color-text);

  cursor: pointer;
  user-select: none;
  white-space: nowrap;

  transition: background-color var(--duration-fast) var(--ease-standard),
    border-color var(--duration-fast) var(--ease-standard),
    color var(--duration-fast) var(--ease-standard),
    box-shadow var(--duration-fast) var(--ease-standard),
    transform var(--duration-fast) var(--ease-standard);
}

.dt-btn:active:not(:disabled) {
  transform: translateY(1px);
}

.dt-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

/* Sizes */
.dt-btn--sm {
  height: var(--control-height-sm);
  padding: 0 var(--space-2);
  font-size: var(--fs-xs);
}

.dt-btn--lg {
  height: var(--control-height-lg);
  padding: 0 var(--space-4);
  font-size: var(--fs-md);
}

/* Primary */
.dt-btn--primary {
  background-color: var(--color-accent);
  color: var(--color-on-accent);
  box-shadow: var(--shadow-xs);
}

.dt-btn--primary:hover:not(:disabled) {
  background-color: var(--color-accent-hover);
}

.dt-btn--primary:active:not(:disabled) {
  background-color: var(--color-accent-active);
}

/* Secondary */
.dt-btn--secondary {
  background-color: var(--color-surface);
  border-color: var(--color-border);
  color: var(--color-text);
}

.dt-btn--secondary:hover:not(:disabled) {
  background-color: var(--color-hover);
  border-color: var(--color-border-strong);
}

/* Ghost */
.dt-btn--ghost {
  background-color: transparent;
  color: var(--color-text-muted);
}

.dt-btn--ghost:hover:not(:disabled) {
  background-color: var(--color-hover);
  color: var(--color-text);
}

/* Danger */
.dt-btn--danger {
  background-color: var(--color-danger-soft);
  color: var(--color-danger);
}

.dt-btn--danger:hover:not(:disabled) {
  background-color: var(--color-danger);
  color: #fff;
}

/* Icon-only */
.dt-btn--icon {
  width: var(--control-height-md);
  padding: 0;
}

.dt-btn--icon.dt-btn--sm {
  width: var(--control-height-sm);
}

.dt-btn--icon.dt-btn--lg {
  width: var(--control-height-lg);
}

/* Full-width */
.dt-btn--block {
  width: 100%;
}

/* Group */
.dt-btn-group {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
}

/* Anchor rendered as a button — reset link styles */
a.dt-btn {
  text-decoration: none;
}

a.dt-btn:hover {
  text-decoration: none;
}

a.dt-btn--primary,
a.dt-btn--primary:hover {
  color: var(--color-on-accent);
}

a.dt-btn--secondary,
a.dt-btn--secondary:hover {
  color: var(--color-text);
}

a.dt-btn--ghost,
a.dt-btn--ghost:hover {
  color: var(--color-text-muted);
}

a.dt-btn--ghost:hover {
  color: var(--color-text);
}

/* ------------------------------------------------------------
 * 2. INPUTS & TEXTAREAS & SELECTS
 * ------------------------------------------------------------ */

.dt-input,
.dt-textarea,
.dt-select {
  width: 100%;
  display: block;

  font-family: var(--font-sans);
  font-size: var(--fs-sm);
  line-height: var(--lh-snug);
  color: var(--color-text);

  background-color: var(--color-input-bg);
  border: var(--border-thin) solid var(--color-border);
  border-radius: var(--radius-md);

  height: var(--control-height-md);

  transition: border-color var(--duration-fast) var(--ease-standard),
    box-shadow var(--duration-fast) var(--ease-standard),
    background-color var(--duration-fast) var(--ease-standard);
}

.dt-input,
.dt-textarea {
  padding: var(--space-2) var(--space-3);
}

.dt-textarea {
  height: auto;
  min-height: 120px;
  padding: var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  line-height: var(--lh-snug);
  resize: vertical;
  white-space: pre;
  overflow: auto;
  tab-size: 2;
}

.dt-select {
  appearance: none;
  -webkit-appearance: none;
  width: 100%;
  height: var(--control-height-md);

  padding: 0 var(--space-6) 0 var(--space-3);

  line-height: 1;
  display: block;

  background-image:
    linear-gradient(45deg, transparent 50%, currentColor 50%),
    linear-gradient(135deg, currentColor 50%, transparent 50%);
  background-position:
    calc(100% - 14px) calc(50% + 1px),
    calc(100% - 9px) calc(50% + 1px);
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;

  text-overflow: ellipsis;
  white-space: nowrap;
  overflow: hidden;
}

.dt-select--sm {
  height: var(--control-height-sm);
  padding: 0 var(--space-5) 0 var(--space-2);
  font-size: var(--fs-xs);
  background-position:
    calc(100% - 12px) calc(50% + 1px),
    calc(100% - 8px) calc(50% + 1px);
}

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

.dt-input:focus,
.dt-textarea:focus,
.dt-select:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-focus-ring);
}

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

.dt-input--error,
.dt-textarea--error {
  border-color: var(--color-danger);
}

.dt-input--error:focus,
.dt-textarea--error:focus {
  box-shadow: 0 0 0 3px var(--color-danger-soft);
}

/* Textarea size variants */
.dt-textarea--lg {
  min-height: 200px;
}

.dt-textarea--xl {
  min-height: 260px;
}

/* ------------------------------------------------------------
 * 3. FORM FIELD WRAPPER
 * ------------------------------------------------------------ */

.dt-field {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.dt-label {
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  color: var(--color-text-muted);
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
}

.dt-help {
  font-size: var(--fs-xs);
  color: var(--color-text-subtle);
  line-height: var(--lh-snug);
}

.dt-error {
  font-size: var(--fs-xs);
  color: var(--color-danger);
  line-height: var(--lh-snug);
}

/* ------------------------------------------------------------
 * 4. CARDS
 * ------------------------------------------------------------ */

.dt-card {
  background-color: var(--color-surface);
  border: var(--border-thin) solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  transition: border-color var(--duration-fast) var(--ease-standard),
    background-color var(--duration-fast) var(--ease-standard),
    box-shadow var(--duration-fast) var(--ease-standard);
}

.dt-card--interactive {
  cursor: pointer;
}

.dt-card--interactive:hover {
  border-color: var(--color-border-strong);
  background-color: var(--color-hover);
  box-shadow: var(--shadow-sm);
}

.dt-card--interactive:active {
  transform: translateY(1px);
}

/* ------------------------------------------------------------
 * 5. TABS
 * ------------------------------------------------------------ */

.dt-tabs {
  display: flex;
  gap: var(--space-1);
  align-items: center;
}

.dt-tab {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);

  padding: var(--space-1) var(--space-3);
  height: 28px;

  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  color: var(--color-text-muted);

  border-radius: var(--radius-full);
  border: var(--border-thin) solid var(--color-border);
  background-color: var(--color-surface);
  cursor: pointer;
  white-space: nowrap;

  transition: background-color var(--duration-fast) var(--ease-standard),
    color var(--duration-fast) var(--ease-standard),
    border-color var(--duration-fast) var(--ease-standard),
    box-shadow var(--duration-fast) var(--ease-standard);
}

.dt-tab:hover {
  background-color: var(--color-hover);
  color: var(--color-text);
  border-color: var(--color-border-strong);
}

/* SELECTED — solid accent, high contrast in both themes */
.dt-tab[aria-selected='true'] {
  background-color: var(--color-accent);
  color: var(--color-on-accent);
  border-color: var(--color-accent);
  box-shadow: 0 1px 3px rgba(79, 70, 229, 0.35);
}

.dt-tab[aria-selected='true']:hover {
  background-color: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  color: var(--color-on-accent);
}

/* ------------------------------------------------------------
 * 6. BADGES
 * ------------------------------------------------------------ */

.dt-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);

  padding: 2px var(--space-2);
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  line-height: 1.4;

  border-radius: var(--radius-full);
  background-color: var(--color-surface-2);
  color: var(--color-text-muted);
}

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

.dt-badge--success {
  background-color: var(--color-success-soft);
  color: var(--color-success);
}

.dt-badge--warning {
  background-color: var(--color-warning-soft);
  color: var(--color-warning);
}

.dt-badge--danger {
  background-color: var(--color-danger-soft);
  color: var(--color-danger);
}

.dt-badge--info {
  background-color: var(--color-info-soft);
  color: var(--color-info);
}

/* ------------------------------------------------------------
 * 7. TOASTS
 * ------------------------------------------------------------ */

.dt-toasts {
  position: fixed;
  left: 50%;
  bottom: var(--space-5);
  transform: translateX(-50%);

  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);

  width: max-content;
  max-width: calc(100% - var(--space-8));

  z-index: var(--z-toast);
  pointer-events: none;
}

.dt-toast {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);

  padding: var(--space-2) var(--space-4);

  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  line-height: var(--lh-snug);
  letter-spacing: var(--ls-normal);
  color: #ffffff;

  border-radius: var(--radius-full);
  border: none;
  box-shadow:
    0 6px 16px rgba(0, 0, 0, 0.22),
    0 2px 6px rgba(0, 0, 0, 0.14);

  pointer-events: auto;
  cursor: pointer;

  animation: dt-toast-in var(--duration-base) var(--ease-out);

  max-width: 360px;
}

.dt-toast--out {
  animation: dt-toast-out var(--duration-fast) var(--ease-in) forwards;
}

.dt-toast--info {
  background: linear-gradient(180deg, #3b82f6 0%, #2563eb 100%);
}

.dt-toast--success {
  background: linear-gradient(180deg, #10b981 0%, #059669 100%);
}

.dt-toast--error {
  background: linear-gradient(180deg, #ef4444 0%, #dc2626 100%);
}

.dt-toast__dot {
  width: 8px;
  height: 8px;
  flex: 0 0 auto;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.95);
  box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.18);
}

@keyframes dt-toast-in {
  from {
    opacity: 0;
    transform: translateY(10px) scale(0.96);
  }

  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes dt-toast-out {
  from {
    opacity: 1;
    transform: translateY(0) scale(1);
  }

  to {
    opacity: 0;
    transform: translateY(6px) scale(0.96);
  }
}

/* ------------------------------------------------------------
 * 8. TOOLTIP
 * ------------------------------------------------------------ */

.dt-tip {
  position: relative;
}

.dt-tip::after {
  content: attr(data-tip);
  position: absolute;
  left: 50%;
  bottom: calc(100% + 6px);
  transform: translateX(-50%);

  padding: 4px var(--space-2);
  font-size: var(--fs-xs);
  white-space: nowrap;

  background-color: var(--color-elevated);
  color: var(--color-text);
  border: var(--border-thin) solid var(--color-border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);

  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-fast) var(--ease-standard);
  z-index: var(--z-dropdown);
}

.dt-tip:hover::after {
  opacity: 1;
}

/* ------------------------------------------------------------
 * 9. EMPTY STATE
 * ------------------------------------------------------------ */

.dt-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-8) var(--space-4);
  text-align: center;
  color: var(--color-text-subtle);
}

.dt-empty__icon {
  color: var(--color-text-subtle);
  opacity: 0.7;
}

.dt-empty__title {
  font-size: var(--fs-md);
  font-weight: var(--fw-semibold);
  color: var(--color-text-muted);
}

.dt-empty__text {
  font-size: var(--fs-sm);
}

/* ------------------------------------------------------------
 * 10. DIVIDER
 * ------------------------------------------------------------ */

.dt-divider {
  height: 1px;
  background-color: var(--color-border);
  border: none;
  margin: var(--space-3) 0;
}

/* ------------------------------------------------------------
 * 11. ICON
 * ------------------------------------------------------------ */

.dt-icon {
  width: var(--icon-size-md);
  height: var(--icon-size-md);
  flex: 0 0 auto;
  display: inline-block;
  color: currentColor;
}

.dt-icon--sm {
  width: var(--icon-size-sm);
  height: var(--icon-size-sm);
}

.dt-icon--lg {
  width: var(--icon-size-lg);
  height: var(--icon-size-lg);
}

.dt-icon--xl {
  width: var(--icon-size-xl);
  height: var(--icon-size-xl);
}

/* ------------------------------------------------------------
 * 12. ALERTS — inline feedback (error, success, info, warning)
 * ------------------------------------------------------------ */

.dt-alert {
  display: flex;
  flex-direction: column;
  gap: 2px;

  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  border: var(--border-thin) solid transparent;

  font-size: var(--fs-xs);
  line-height: var(--lh-snug);
}

.dt-alert--error {
  background-color: var(--color-danger-soft);
  color: var(--color-danger);
  border-color: rgba(180, 35, 24, 0.18);
}

.dt-alert--success {
  background-color: var(--color-success-soft);
  color: var(--color-success);
}

.dt-alert--warning {
  background-color: var(--color-warning-soft);
  color: var(--color-warning);
}

.dt-alert--info {
  background-color: var(--color-info-soft);
  color: var(--color-info);
}

/* ------------------------------------------------------------
 * 13. KEYBOARD HINTS
 * ------------------------------------------------------------ */

.dt-kbd {
  display: inline-block;
  padding: 1px 5px;

  font-family: var(--font-mono);
  font-size: 10px;
  line-height: 1.5;
  color: var(--color-text-muted);

  background-color: var(--color-surface-2);
  border: var(--border-thin) solid var(--color-border);
  border-bottom-width: 2px;
  border-radius: var(--radius-xs);
}

.dt-hint {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: var(--fs-xs);
  color: var(--color-text-subtle);
}


/* ------------------------------------------------------------
 * 14. PANEL-NESTED FIELDS — small variant when inside a panel head
 * ------------------------------------------------------------ */

.dt-panel .dt-input,
.dt-panel .dt-select {
  height: 30px;
  font-size: var(--fs-xs);
}

.dt-panel .dt-textarea {
  border: none;
  border-radius: 0;
}

.dt-panel .dt-textarea:focus {
  box-shadow: none;
}



/* ------------------------------------------------------------
 * 14. TOOL CARD STAR (favorites)
 * ------------------------------------------------------------ */

.dt-tool-card-wrap {
  position: relative;
  display: flex;
}

.dt-tool-card-wrap .dt-tool-card {
  flex: 1 1 auto;
  min-width: 0;
  width: 100%;
}

.dt-tool-card__star {
  position: absolute;
  top: 6px;
  right: 6px;

  display: inline-flex;
  align-items: center;
  justify-content: center;

  width: 26px;
  height: 26px;
  padding: 0;

  background-color: transparent;
  border: none;
  border-radius: var(--radius-sm);

  color: var(--color-text-subtle);
  cursor: pointer;

  opacity: 0;
  transition: opacity var(--duration-fast) var(--ease-standard),
    background-color var(--duration-fast) var(--ease-standard),
    color var(--duration-fast) var(--ease-standard),
    transform var(--duration-fast) var(--ease-standard);
}

.dt-tool-card-wrap:hover .dt-tool-card__star,
.dt-tool-card__star:focus-visible {
  opacity: 1;
}

.dt-tool-card__star:hover {
  background-color: var(--color-surface);
  color: var(--color-warning);
  transform: scale(1.05);
}

.dt-tool-card__star--on {
  opacity: 1;
  color: #f59e0b;
}

.dt-tool-card__star--on:hover {
  color: #d97706;
}


/* ------------------------------------------------------------
 * 15. COMMAND PALETTE (Ctrl+K)
 * ------------------------------------------------------------ */

.dt-palette {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);

  display: flex;
  align-items: flex-start;
  justify-content: center;

  padding-top: 12vh;

  background-color: var(--color-overlay);
  backdrop-filter: blur(3px);
  -webkit-backdrop-filter: blur(3px);

  opacity: 0;
  transition: opacity var(--duration-base) var(--ease-standard);
}

.dt-palette[hidden] {
  display: none;
}

.dt-palette.dt-palette--open {
  opacity: 1;
}

/* Panel */
.dt-palette__panel {
  width: min(560px, calc(100% - 32px));
  max-height: 70vh;

  display: flex;
  flex-direction: column;

  background-color: var(--color-elevated);
  border: var(--border-thin) solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);

  overflow: hidden;

  transform: translateY(-8px) scale(0.98);
  transition: transform var(--duration-base) var(--ease-out);
}

.dt-palette--open .dt-palette__panel {
  transform: translateY(0) scale(1);
}

/* Input row */
.dt-palette__input-row {
  display: flex;
  align-items: center;
  gap: 10px;

  padding: 14px 16px;
  border-bottom: var(--border-thin) solid var(--color-border);
  background-color: var(--color-elevated);
}

.dt-palette__search-icon {
  width: 18px;
  height: 18px;
  color: var(--color-text-subtle);
  flex: 0 0 auto;
}

.dt-palette__input {
  flex: 1 1 auto;
  min-width: 0;

  background: transparent;
  border: none;
  outline: none;
  padding: 0;

  font-family: var(--font-sans);
  font-size: var(--fs-lg);
  font-weight: var(--fw-medium);
  color: var(--color-text);
  line-height: 1.2;
}

.dt-palette__input::placeholder {
  color: var(--color-text-subtle);
  font-weight: var(--fw-regular);
}

/* Results list */
.dt-palette__list {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;

  padding: 6px;
}

/* Item */
.dt-palette__item {
  display: flex;
  align-items: center;
  gap: 12px;

  padding: 10px 12px;
  border-radius: var(--radius-md);

  cursor: pointer;
  transition: background-color var(--duration-fast) var(--ease-standard);
}

.dt-palette__item:hover {
  background-color: var(--color-hover);
}

.dt-palette__item--selected {
  background-color: var(--color-accent-soft);
}

.dt-palette__item--selected .dt-palette__item-name {
  color: var(--color-accent);
}

/* Icon */
.dt-palette__item-icon {
  flex: 0 0 auto;

  display: inline-flex;
  align-items: center;
  justify-content: center;

  width: 32px;
  height: 32px;
  border-radius: var(--radius-md);

  background-color: var(--color-surface-2);
  color: var(--color-text-muted);
}

.dt-palette__item--selected .dt-palette__item-icon {
  background-color: var(--color-accent);
  color: #ffffff;
}

.dt-palette__item-icon svg {
  width: 16px;
  height: 16px;
}

/* Text */
.dt-palette__item-main {
  flex: 1 1 auto;
  min-width: 0;

  display: flex;
  flex-direction: column;
  gap: 2px;
}

.dt-palette__item-name {
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--color-text);
  line-height: var(--lh-tight);

  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.dt-palette__item-desc {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  line-height: var(--lh-snug);

  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Category meta */
.dt-palette__item-meta {
  flex: 0 0 auto;
}

.dt-palette__item-cat {
  display: inline-block;
  padding: 2px 8px;

  font-size: 10px;
  font-weight: var(--fw-semibold);
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;

  border-radius: var(--radius-full);
  background-color: var(--color-surface-2);
  color: var(--color-text-muted);
}

.dt-palette__item--selected .dt-palette__item-cat {
  background-color: rgba(255, 255, 255, 0.25);
  color: var(--color-accent);
}

/* Star (favorite indicator) */
.dt-palette__item--fav .dt-palette__item-name::after {
  content: ' ★';
  color: #f59e0b;
  font-size: 11px;
  margin-left: 2px;
}

/* Empty state */
.dt-palette__empty {
  padding: 40px 16px;
  text-align: center;
}

.dt-palette__empty-title {
  font-size: var(--fs-md);
  font-weight: var(--fw-semibold);
  color: var(--color-text-muted);
  margin-bottom: 4px;
}

.dt-palette__empty-hint {
  font-size: var(--fs-sm);
  color: var(--color-text-subtle);
}

/* Header search shortcut hint */
.dt-palette-hint {
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);

  padding: 1px 6px;

  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: var(--fw-semibold);
  letter-spacing: 0.02em;
  color: var(--color-text-subtle);

  background-color: var(--color-surface-2);
  border: var(--border-thin) solid var(--color-border);
  border-radius: var(--radius-sm);

  pointer-events: none;
  user-select: none;
}

/* Give the top bar search padding-right so text doesn't collide with the hint */
.dt-topbar__search .dt-input {
  padding-right: 48px;
}



/* ------------------------------------------------------------
 * 16. SETTINGS MENU
 * ------------------------------------------------------------ */

.dt-settings {
  position: fixed;
  z-index: var(--z-dropdown);

  width: 280px;

  background-color: var(--color-elevated);
  border: var(--border-thin) solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;

  opacity: 0;
  transform: translateY(-6px) scale(0.98);
  transition: opacity var(--duration-fast) var(--ease-standard),
              transform var(--duration-fast) var(--ease-out);
}

.dt-settings[hidden] { display: none; }

.dt-settings.dt-settings--open {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.dt-settings__head {
  padding: 10px 14px;
  border-bottom: var(--border-thin) solid var(--color-border);
  background-color: var(--color-bg-subtle);
}

.dt-settings__title {
  font-size: 10px;
  font-weight: var(--fw-bold);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.dt-settings__body {
  padding: 8px;
}

.dt-settings__row {
  display: flex;
  align-items: flex-start;
  gap: 10px;

  padding: 8px 10px;
  border-radius: var(--radius-md);

  cursor: pointer;
  user-select: none;
  transition: background-color var(--duration-fast) var(--ease-standard);
}

.dt-settings__row:hover {
  background-color: var(--color-hover);
}

.dt-settings__row input[type="checkbox"] {
  margin: 2px 0 0 0;
  accent-color: var(--color-accent);
  flex: 0 0 auto;
}

.dt-settings__row-main {
  flex: 1 1 auto;
  min-width: 0;
}

.dt-settings__row-label {
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--color-text);
  line-height: var(--lh-snug);
}

.dt-settings__row-hint {
  font-size: var(--fs-xs);
  color: var(--color-text-subtle);
  line-height: var(--lh-snug);
  margin-top: 2px;
}

.dt-settings__divider {
  height: 1px;
  margin: 8px 6px;
  background-color: var(--color-border);
}


/* ------------------------------------------------------------
 * 17. SETTINGS BADGE ("Recommended" etc.)
 * ------------------------------------------------------------ */

.dt-settings__row-label-wrap {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.dt-settings__row-badge {
  display: inline-block;
  padding: 1px 6px;

  font-size: 9px;
  font-weight: var(--fw-bold);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  line-height: 1.4;

  color: var(--color-success);
  background-color: var(--color-success-soft);
  border-radius: var(--radius-full);
}




/* ------------------------------------------------------------
 * 18. CONFIRM DIALOG (custom, replaces window.confirm)
 * ------------------------------------------------------------ */

.dt-confirm {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);

  display: flex;
  align-items: center;
  justify-content: center;

  padding: var(--space-4);

  background-color: var(--color-overlay);
  backdrop-filter: blur(3px);
  -webkit-backdrop-filter: blur(3px);

  opacity: 0;
  transition: opacity var(--duration-base) var(--ease-standard);
}

.dt-confirm[hidden] { display: none; }

.dt-confirm.dt-confirm--open { opacity: 1; }

.dt-confirm__panel {
  width: min(420px, 100%);

  background-color: var(--color-elevated);
  border: var(--border-thin) solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;

  transform: translateY(-6px) scale(0.98);
  transition: transform var(--duration-base) var(--ease-out);

  outline: none;
}

.dt-confirm--open .dt-confirm__panel {
  transform: translateY(0) scale(1);
}

.dt-confirm__body {
  display: flex;
  gap: 14px;
  padding: 20px 20px 16px;
}

.dt-confirm__icon {
  flex: 0 0 auto;

  display: inline-flex;
  align-items: center;
  justify-content: center;

  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
}

.dt-confirm__icon svg {
  width: 22px;
  height: 22px;
}

.dt-confirm__icon--danger {
  background-color: var(--color-danger-soft);
  color: var(--color-danger);
}

.dt-confirm__icon--info {
  background-color: var(--color-info-soft);
  color: var(--color-info);
}

.dt-confirm__text {
  flex: 1 1 auto;
  min-width: 0;
}

.dt-confirm__title {
  font-size: var(--fs-md);
  font-weight: var(--fw-bold);
  color: var(--color-text);
  line-height: var(--lh-tight);
  margin-bottom: 4px;
}

.dt-confirm__message {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  line-height: var(--lh-normal);
}

.dt-confirm__actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;

  padding: 12px 16px;
  background-color: var(--color-bg-subtle);
  border-top: var(--border-thin) solid var(--color-border);
}

/* ------------------------------------------------------------
 * 19. DANGER SOLID BUTTON (for confirm dialog confirm action)
 * ------------------------------------------------------------ */

.dt-btn--danger-solid {
  background-color: var(--color-danger);
  color: #ffffff;
  border-color: var(--color-danger);
}

.dt-btn--danger-solid:hover:not(:disabled) {
  background-color: #991b1b;
  border-color: #991b1b;
}

/* ------------------------------------------------------------
 * 20. TOAST ACTION BUTTON (Undo)
 * ------------------------------------------------------------ */

.dt-toast__action {
  display: inline-flex;
  align-items: center;

  margin-left: 6px;
  padding: 2px 10px;

  background-color: rgba(255, 255, 255, 0.18);
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: var(--radius-full);

  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: var(--fw-bold);
  letter-spacing: 0.02em;
  color: #ffffff;

  cursor: pointer;
  transition: background-color var(--duration-fast) var(--ease-standard),
              border-color var(--duration-fast) var(--ease-standard);
}

.dt-toast__action:hover {
  background-color: rgba(255, 255, 255, 0.3);
  border-color: rgba(255, 255, 255, 0.5);
}

.dt-toast__action:active {
  background-color: rgba(255, 255, 255, 0.4);
}

/* ------------------------------------------------------------
 * 21. HELP OVERLAY (keyboard shortcuts)
 * ------------------------------------------------------------ */

.dt-help {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);

  display: flex;
  align-items: center;
  justify-content: center;

  padding: var(--space-4);

  background-color: var(--color-overlay);
  backdrop-filter: blur(3px);
  -webkit-backdrop-filter: blur(3px);

  opacity: 0;
  transition: opacity var(--duration-base) var(--ease-standard);
}

.dt-help[hidden] { display: none; }
.dt-help.dt-help--open { opacity: 1; }

/* Panel */
.dt-help__panel {
  width: min(520px, 100%);
  max-height: 82vh;

  display: flex;
  flex-direction: column;

  background-color: var(--color-elevated);
  border: var(--border-thin) solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;

  transform: translateY(-6px) scale(0.98);
  transition: transform var(--duration-base) var(--ease-out);

  outline: none;
}

.dt-help--open .dt-help__panel {
  transform: translateY(0) scale(1);
}

/* Header */
.dt-help__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);

  padding: 12px 16px;
  border-bottom: var(--border-thin) solid var(--color-border);
  background-color: var(--color-bg-subtle);
}

.dt-help__title {
  font-size: var(--fs-md);
  font-weight: var(--fw-bold);
  color: var(--color-text);
  letter-spacing: var(--ls-tight);
}

/* Body */
.dt-help__body {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;

  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* Group */
.dt-help__group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.dt-help__group-label {
  font-size: 10px;
  font-weight: var(--fw-bold);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-subtle);
}

.dt-help__group-body {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

/* Row */
.dt-help__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;

  padding: 6px 8px;
  border-radius: var(--radius-md);

  transition: background-color var(--duration-fast) var(--ease-standard);
}

.dt-help__row:hover {
  background-color: var(--color-hover);
}

/* Keys */
.dt-help__keys {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 3px;
}

.dt-help__plus {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--color-text-subtle);
  margin: 0 1px;
}

/* Action */
.dt-help__action {
  flex: 1 1 auto;
  min-width: 0;
  text-align: right;

  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  line-height: var(--lh-snug);
}

/* Footer */
.dt-help__foot {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;

  padding: 10px 16px;
  border-top: var(--border-thin) solid var(--color-border);
  background-color: var(--color-bg-subtle);

  font-size: var(--fs-xs);
  color: var(--color-text-subtle);
}

.dt-help__foot-text {
  font-size: var(--fs-xs);
}


/* ------------------------------------------------------------
 * SAFETY NET — [hidden] must always win, and hidden modals must
 * never intercept clicks. Prevents "everything is blocked" bugs.
 * ------------------------------------------------------------ */

[hidden] {
  display: none !important;
}

/* Invisible modals should never eat clicks */
.dt-palette:not(.dt-palette--open),
.dt-help:not(.dt-help--open),
.dt-confirm:not(.dt-confirm--open),
.dt-settings:not(.dt-settings--open) {
  pointer-events: none !important;
}



/* ------------------------------------------------------------
 * 22. WELCOME OVERLAY (first run only)
 * ------------------------------------------------------------ */

.dt-welcome {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);

  display: flex;
  align-items: center;
  justify-content: center;

  padding: var(--space-4);

  background-color: var(--color-overlay);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);

  opacity: 0;
  transition: opacity var(--duration-base) var(--ease-standard);
}

.dt-welcome.dt-welcome--open { opacity: 1; }

/* Panel */
.dt-welcome__panel {
  width: min(500px, 100%);
  max-height: 90vh;

  display: flex;
  flex-direction: column;

  padding: 24px;

  background-color: var(--color-elevated);
  border: var(--border-thin) solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  overflow-y: auto;

  transform: translateY(-8px) scale(0.98);
  transition: transform var(--duration-base) var(--ease-out);

  outline: none;
}

.dt-welcome--open .dt-welcome__panel {
  transform: translateY(0) scale(1);
}

/* Hero */
.dt-welcome__hero {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 20px;
}

.dt-welcome__hero-icon {
  flex: 0 0 auto;

  display: inline-flex;
  align-items: center;
  justify-content: center;

  width: 48px;
  height: 48px;
  border-radius: var(--radius-lg);

  color: var(--color-accent);
  background: linear-gradient(135deg, var(--color-accent-soft), rgba(99, 102, 241, 0.24));
}

.dt-welcome__hero-icon svg {
  width: 24px;
  height: 24px;
}

.dt-welcome__hero-text {
  flex: 1 1 auto;
  min-width: 0;
}

.dt-welcome__title {
  font-size: var(--fs-xl);
  font-weight: var(--fw-bold);
  letter-spacing: var(--ls-tight);
  line-height: var(--lh-tight);
  color: var(--color-text);
  margin-bottom: 4px;
}

.dt-welcome__subtitle {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  line-height: var(--lh-snug);
}

/* Feature list */
.dt-welcome__features {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 20px;
}

.dt-welcome__feature {
  display: flex;
  align-items: flex-start;
  gap: 12px;

  padding: 10px 12px;
  border-radius: var(--radius-md);
  background-color: var(--color-bg-subtle);
}

.dt-welcome__feature-icon {
  flex: 0 0 auto;

  display: inline-flex;
  align-items: center;
  justify-content: center;

  width: 26px;
  height: 26px;
  border-radius: var(--radius-sm);

  font-size: 14px;
  color: var(--color-accent);
  background-color: var(--color-surface);
  border: var(--border-thin) solid var(--color-border);
}

.dt-welcome__feature-text {
  flex: 1 1 auto;
  min-width: 0;
}

.dt-welcome__feature-title {
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--color-text);
  line-height: var(--lh-snug);
  margin-bottom: 1px;
}

.dt-welcome__feature-desc {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  line-height: var(--lh-snug);
}

/* Theme picker */
.dt-welcome__theme-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;

  padding: 12px 0;
  margin-bottom: 16px;
  border-top: var(--border-thin) solid var(--color-border);
}

.dt-welcome__theme-label-text {
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--color-text);
}

.dt-welcome__theme-options {
  display: flex;
  gap: 8px;
}

.dt-welcome__theme-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;

  padding: 6px;
  border: var(--border-thin) solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-surface);

  cursor: pointer;
  transition: border-color var(--duration-fast) var(--ease-standard),
              background-color var(--duration-fast) var(--ease-standard),
              transform var(--duration-fast) var(--ease-standard);
}

.dt-welcome__theme-btn:hover {
  border-color: var(--color-border-strong);
  transform: translateY(-1px);
}

.dt-welcome__theme-btn--on {
  border-color: var(--color-accent);
  background-color: var(--color-accent-soft);
}

.dt-welcome__theme-swatch {
  width: 32px;
  height: 20px;
  border-radius: var(--radius-sm);
  border: var(--border-thin) solid var(--color-border);
}

.dt-welcome__theme-swatch--light {
  background: linear-gradient(135deg, #ffffff 50%, #e4e7ec 50%);
}

.dt-welcome__theme-swatch--dark {
  background: linear-gradient(135deg, #09090b 50%, #232329 50%);
}

.dt-welcome__theme-label {
  font-size: 10px;
  font-weight: var(--fw-semibold);
  letter-spacing: 0.02em;
  color: var(--color-text-muted);
}

.dt-welcome__theme-btn--on .dt-welcome__theme-label {
  color: var(--color-accent);
}

/* Actions */
.dt-welcome__actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  padding-top: 8px;
}

@media (max-width: 480px) {
  .dt-welcome__panel {
    padding: 20px;
  }
  .dt-welcome__theme-row {
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
  }
  .dt-welcome__actions .dt-btn {
    width: 100%;
  }
}
/* ------------------------------------------------------------
 * Settings: theme segmented control (v2)
 * ------------------------------------------------------------ */

.dt-settings__theme {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-1) 0;
}

.dt-settings__seg {
  display: flex;
  gap: 2px;
  padding: 2px;
  background-color: var(--color-surface-2);
  border: var(--border-thin) solid var(--color-border);
  border-radius: var(--radius-md);
}

.dt-settings__seg-btn {
  flex: 1 1 0;
  height: 26px;
  font-family: var(--font-sans);
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  color: var(--color-text-muted);
  background: none;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.dt-settings__seg-btn:hover {
  color: var(--color-text);
}

.dt-settings__seg-btn--on {
  color: var(--color-accent);
  background-color: var(--color-surface);
  box-shadow: var(--shadow-xs);
}