/* ==========================================================================
   OMNI COLOR — TOOL STYLESHEET
   File: assets/css/tools.css
   Purpose: Tool-specific UI — color picker, palette, gradient, contrast,
            mixer, blindness simulator, image picker, shades, harmony,
            CSS tools, developer toolkit, random generator
   Author: Omni Color
   Version: 1.0.0
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. TOOL SHELL
   -------------------------------------------------------------------------- */
.tool-page {
  padding-block: var(--space-8) var(--space-16);
}

.tool-page__header {
  max-width: var(--container-wide);
  margin-inline: auto;
  padding-inline: var(--space-4);
  margin-bottom: var(--space-8);
}

@media (min-width: 40rem) {
  .tool-page__header { padding-inline: var(--space-6); }
}

@media (min-width: 64rem) {
  .tool-page__header { padding-inline: var(--space-8); }
}

.tool-shell {
  max-width: var(--container-wide);
  margin-inline: auto;
  padding-inline: var(--space-4);
}

@media (min-width: 40rem) {
  .tool-shell { padding-inline: var(--space-6); }
}

@media (min-width: 64rem) {
  .tool-shell { padding-inline: var(--space-8); }
}

.tool-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  align-items: start;
}

@media (min-width: 64rem) {
  .tool-grid {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
    gap: var(--space-8);
  }
  .tool-grid--even {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }
  .tool-grid--reverse {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr);
  }
  .tool-grid--sidebar {
    grid-template-columns: 20rem minmax(0, 1fr);
  }
}

.tool-panel {
  background-color: var(--surface-raised);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: var(--space-5);
  box-shadow: var(--shadow-xs);
}

@media (min-width: 48rem) {
  .tool-panel {
    padding: var(--space-6);
  }
}

.tool-panel--flat {
  box-shadow: none;
}

.tool-panel__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--border-subtle);
}

.tool-panel__title {
  font-size: var(--fs-base);
  font-weight: var(--fw-semibold);
  color: var(--text-primary);
  line-height: 1.3;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.tool-panel__title svg {
  width: 1.125rem;
  height: 1.125rem;
  color: var(--brand-primary);
}

.tool-panel__subtitle {
  font-size: var(--fs-xs);
  color: var(--text-tertiary);
  margin-top: 2px;
}

.tool-panel__body {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.tool-panel__footer {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-5);
  padding-top: var(--space-4);
  border-top: 1px solid var(--border-subtle);
}

/* --------------------------------------------------------------------------
   2. COLOR PICKER — MAIN
   -------------------------------------------------------------------------- */
.picker {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

/* Preview swatch */
.picker__preview {
  position: relative;
  width: 100%;
  height: 10rem;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.06);
  background-color: var(--surface-muted);
}

.picker__preview-fill {
  position: absolute;
  inset: 0;
  transition: background-color var(--duration-fast) var(--ease-out);
}

.picker__preview-info {
  position: absolute;
  inset: auto 0 0 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: linear-gradient(to top, rgba(0, 0, 0, 0.35), transparent);
  color: #ffffff;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.picker__preview-hex {
  font-weight: var(--fw-semibold);
  font-size: var(--fs-sm);
}

.picker__preview-actions {
  display: flex;
  gap: var(--space-1);
}

.picker__preview-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.75rem;
  height: 1.75rem;
  border-radius: var(--radius-sm);
  background-color: rgba(255, 255, 255, 0.2);
  color: #ffffff;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  transition: background-color var(--duration-fast) var(--ease-out);
}

.picker__preview-action:hover {
  background-color: rgba(255, 255, 255, 0.35);
}

.picker__preview-action svg {
  width: 0.875rem;
  height: 0.875rem;
}

.picker__preview-action.is-active {
  background-color: rgba(255, 255, 255, 0.85);
  color: var(--neutral-900);
}

/* Saturation / Value area */
.picker__sv {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 10;
  border-radius: var(--radius-lg);
  cursor: crosshair;
  touch-action: none;
  user-select: none;
  overflow: hidden;
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.06);
}

@media (min-width: 48rem) {
  .picker__sv {
    aspect-ratio: 2 / 1;
    min-height: 12rem;
  }
}

.picker__sv-base {
  position: absolute;
  inset: 0;
  background: currentColor;
}

.picker__sv-white {
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, #ffffff, rgba(255, 255, 255, 0));
}

.picker__sv-black {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, #000000, rgba(0, 0, 0, 0));
}

.picker__sv-cursor {
  position: absolute;
  width: 1.125rem;
  height: 1.125rem;
  border-radius: 50%;
  border: 2px solid #ffffff;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.35), 0 2px 6px rgba(0, 0, 0, 0.3);
  transform: translate(-50%, -50%);
  pointer-events: none;
  transition: transform var(--duration-instant) linear;
}

/* Hue slider */
.picker__hue {
  position: relative;
  width: 100%;
  height: 1.5rem;
  border-radius: var(--radius-full);
  cursor: pointer;
  touch-action: none;
  user-select: none;
  background: linear-gradient(
    to right,
    #ff0000 0%,
    #ffff00 16.666%,
    #00ff00 33.333%,
    #00ffff 50%,
    #0000ff 66.666%,
    #ff00ff 83.333%,
    #ff0000 100%
  );
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.08);
}

.picker__hue-cursor {
  position: absolute;
  top: 50%;
  width: 1.25rem;
  height: 1.25rem;
  border-radius: 50%;
  border: 2px solid #ffffff;
  background-color: transparent;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.35), 0 2px 6px rgba(0, 0, 0, 0.3);
  transform: translate(-50%, -50%);
  pointer-events: none;
}

/* Alpha slider */
.picker__alpha {
  position: relative;
  width: 100%;
  height: 1.5rem;
  border-radius: var(--radius-full);
  cursor: pointer;
  touch-action: none;
  user-select: none;
  overflow: hidden;
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.08);
}

.picker__alpha-bg {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background-image:
    linear-gradient(45deg, #d1d5db 25%, transparent 25%),
    linear-gradient(-45deg, #d1d5db 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, #d1d5db 75%),
    linear-gradient(-45deg, transparent 75%, #d1d5db 75%);
  background-size: 12px 12px;
  background-position: 0 0, 0 6px, 6px -6px, -6px 0px;
  background-color: #f3f4f6;
}

.picker__alpha-fill {
  position: absolute;
  inset: 0;
  border-radius: inherit;
}

.picker__alpha-cursor {
  position: absolute;
  top: 50%;
  width: 1.25rem;
  height: 1.25rem;
  border-radius: 50%;
  border: 2px solid #ffffff;
  background-color: transparent;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.35), 0 2px 6px rgba(0, 0, 0, 0.3);
  transform: translate(-50%, -50%);
  pointer-events: none;
}

/* Mode tabs */
.picker__modes {
  display: flex;
  gap: var(--space-1);
  padding: 3px;
  background-color: var(--surface-muted);
  border-radius: var(--radius-lg);
  overflow-x: auto;
  scrollbar-width: none;
}

.picker__modes::-webkit-scrollbar { display: none; }

.picker__mode {
  flex: 1 0 auto;
  padding: var(--space-2) var(--space-3);
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  color: var(--text-secondary);
  background-color: transparent;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  white-space: nowrap;
  transition: background-color var(--duration-fast) var(--ease-out),
    color var(--duration-fast) var(--ease-out),
    box-shadow var(--duration-fast) var(--ease-out);
  text-transform: uppercase;
  letter-spacing: var(--ls-wide);
}

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

.picker__mode[aria-selected="true"] {
  color: var(--text-primary);
  background-color: var(--surface-raised);
  box-shadow: var(--shadow-xs);
}

/* Numeric fields row */
.picker__fields {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(5rem, 1fr));
  gap: var(--space-3);
}

/* Color swatch grid — recent / favorites */
.picker__history {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.picker__history-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: var(--ls-wide);
}

.picker__history-label button {
  font-size: var(--fs-xs);
  color: var(--text-tertiary);
  text-transform: none;
  letter-spacing: 0;
  font-weight: var(--fw-medium);
}

.picker__history-label button:hover {
  color: var(--danger-600);
}

.picker__swatches {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.picker__swatch-mini {
  width: 1.75rem;
  height: 1.75rem;
  border-radius: var(--radius-md);
  border: 1px solid rgba(0, 0, 0, 0.08);
  cursor: pointer;
  transition: transform var(--duration-fast) var(--ease-out),
    box-shadow var(--duration-fast) var(--ease-out);
  flex-shrink: 0;
}

.picker__swatch-mini:hover {
  transform: scale(1.1);
  box-shadow: 0 0 0 2px var(--brand-primary);
}

.picker__swatch-mini:focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px var(--brand-primary);
}

/* Picker actions */
.picker__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.picker__actions .btn {
  flex: 1 1 auto;
  min-width: 6rem;
}

/* --------------------------------------------------------------------------
   3. COLOR CONVERTER — OUTPUT GRID
   -------------------------------------------------------------------------- */
.converter-output {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
}

@media (min-width: 48rem) {
  .converter-output {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.conv-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background-color: var(--surface-sunken);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  transition: border-color var(--duration-fast) var(--ease-out);
}

.conv-row:hover {
  border-color: var(--border-default);
}

.conv-row__info {
  min-width: 0;
  flex: 1;
}

.conv-row__label {
  display: block;
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  text-transform: uppercase;
  letter-spacing: var(--ls-wide);
  color: var(--text-tertiary);
  margin-bottom: 2px;
}

.conv-row__value {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--text-primary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  cursor: pointer;
  transition: color var(--duration-fast) var(--ease-out);
}

.conv-row__value:hover {
  color: var(--brand-primary);
}

/* --------------------------------------------------------------------------
   4. PALETTE GENERATOR
   -------------------------------------------------------------------------- */
.palette {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(3.5rem, 1fr));
  gap: var(--space-2);
  width: 100%;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.palette--lg {
  grid-template-columns: repeat(auto-fit, minmax(5rem, 1fr));
  gap: var(--space-3);
}

.palette__item {
  position: relative;
  aspect-ratio: 3 / 4;
  background-color: var(--surface-muted);
  cursor: pointer;
  transition: transform var(--duration-fast) var(--ease-out);
  overflow: hidden;
  border-radius: var(--radius-lg);
}

.palette__item:hover {
  transform: scale(1.02);
}

.palette__fill {
  position: absolute;
  inset: 0;
}

.palette__info {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: var(--space-2);
  background: linear-gradient(to top, rgba(0, 0, 0, 0.4), transparent);
  color: #ffffff;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-weight: var(--fw-semibold);
  text-align: center;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity var(--duration-fast) var(--ease-out),
    transform var(--duration-fast) var(--ease-out);
}

.palette__item:hover .palette__info,
.palette__item:focus-within .palette__info {
  opacity: 1;
  transform: translateY(0);
}

.palette__lock {
  position: absolute;
  top: var(--space-2);
  right: var(--space-2);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.75rem;
  height: 1.75rem;
  border-radius: var(--radius-md);
  background-color: rgba(255, 255, 255, 0.85);
  color: var(--neutral-800);
  opacity: 0;
  transition: opacity var(--duration-fast) var(--ease-out),
    background-color var(--duration-fast) var(--ease-out);
  backdrop-filter: blur(6px);
}

.palette__item:hover .palette__lock,
.palette__item:focus-within .palette__lock {
  opacity: 1;
}

.palette__lock.is-locked {
  opacity: 1;
  background-color: var(--brand-primary);
  color: #ffffff;
}

.palette__lock svg {
  width: 0.875rem;
  height: 0.875rem;
}

/* Palette controls */
.palette-controls {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.palette-controls__row {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

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

/* --------------------------------------------------------------------------
   5. SHADES GENERATOR
   -------------------------------------------------------------------------- */
.shades {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  width: 100%;
}

.shade-row {
  display: grid;
  grid-template-columns: 3rem minmax(0, 1fr) auto;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2);
  background-color: var(--surface-sunken);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
}

.shade-row__step {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  color: var(--text-tertiary);
  text-align: center;
}

.shade-row__swatch {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  font-weight: var(--fw-medium);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  min-height: 2.5rem;
  cursor: pointer;
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.08);
  transition: transform var(--duration-fast) var(--ease-out);
}

.shade-row__swatch:hover {
  transform: translateX(2px);
}

.shade-row__actions {
  display: flex;
  gap: 2px;
}

/* --------------------------------------------------------------------------
   6. GRADIENT GENERATOR
   -------------------------------------------------------------------------- */
.gradient-preview {
  position: relative;
  width: 100%;
  height: 12rem;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.06), var(--shadow-sm);
}

@media (min-width: 48rem) {
  .gradient-preview {
    height: 16rem;
  }
}

.gradient-preview__fill {
  position: absolute;
  inset: 0;
}

.gradient-preview__checker {
  position: absolute;
  inset: 0;
  z-index: -1;
}

/* Stops editor */
.gradient-stops {
  position: relative;
  height: 2.5rem;
  margin-top: var(--space-2);
  border-radius: var(--radius-md);
  cursor: crosshair;
  user-select: none;
}

.gradient-stops__bar {
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 1rem;
  transform: translateY(-50%);
  border-radius: var(--radius-full);
  overflow: hidden;
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.08);
  background-color: var(--surface-muted);
}

.gradient-stops__fill {
  position: absolute;
  inset: 0;
}

.gradient-stop {
  position: absolute;
  top: 50%;
  width: 1.25rem;
  height: 1.25rem;
  margin-left: -0.625rem;
  margin-top: -0.625rem;
  border-radius: 50%;
  background-color: var(--surface-base);
  border: 3px solid var(--surface-base);
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.2), 0 2px 6px rgba(0, 0, 0, 0.2);
  cursor: grab;
  transition: transform var(--duration-fast) var(--ease-out);
}

.gradient-stop:active {
  cursor: grabbing;
  transform: scale(1.15);
}

.gradient-stop.is-active {
  box-shadow: 0 0 0 2px var(--brand-primary), 0 2px 6px rgba(0, 0, 0, 0.25);
}

.gradient-stop__inner {
  position: absolute;
  inset: 2px;
  border-radius: 50%;
}

/* Stops list */
.gradient-stops-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-top: var(--space-3);
}

.gradient-stop-row {
  display: grid;
  grid-template-columns: 2rem minmax(0, 1fr) 4.5rem 2rem;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2);
  background-color: var(--surface-sunken);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
}

.gradient-stop-row__color {
  width: 2rem;
  height: 2rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.08);
}

.gradient-stop-row__input {
  height: 2rem;
  padding-inline: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  text-transform: uppercase;
  background-color: var(--surface-base);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  width: 100%;
}

.gradient-stop-row__pos {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.gradient-stop-row__pos input {
  width: 3rem;
  height: 2rem;
  padding-inline: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  text-align: right;
  background-color: var(--surface-base);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
}

.gradient-stop-row__pos span {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--text-tertiary);
}

/* Type tabs */
.gradient-types {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-1);
  padding: 3px;
  background-color: var(--surface-muted);
  border-radius: var(--radius-lg);
}

.gradient-types__btn {
  padding: var(--space-2);
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  color: var(--text-secondary);
  background: transparent;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: var(--ls-wide);
  transition: background-color var(--duration-fast) var(--ease-out),
    color var(--duration-fast) var(--ease-out);
}

.gradient-types__btn[aria-selected="true"] {
  background-color: var(--surface-raised);
  color: var(--text-primary);
  box-shadow: var(--shadow-xs);
}

/* Preset grid */
.gradient-presets {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(6rem, 1fr));
  gap: var(--space-2);
}

.gradient-preset {
  position: relative;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
  border: 1px solid var(--border-subtle);
  transition: transform var(--duration-fast) var(--ease-out),
    box-shadow var(--duration-fast) var(--ease-out);
}

.gradient-preset:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.gradient-preset__label {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 4px var(--space-2);
  background: linear-gradient(to top, rgba(0, 0, 0, 0.5), transparent);
  color: #ffffff;
  font-size: 0.6875rem;
  font-weight: var(--fw-semibold);
  text-align: center;
  text-transform: capitalize;
}

/* --------------------------------------------------------------------------
   7. CONTRAST CHECKER
   -------------------------------------------------------------------------- */
.contrast-preview {
  padding: var(--space-6);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-subtle);
  text-align: center;
  transition: background-color var(--duration-fast) var(--ease-out),
    color var(--duration-fast) var(--ease-out);
}

.contrast-preview__sample-large {
  font-size: 1.75rem;
  font-weight: var(--fw-bold);
  line-height: var(--lh-tight);
  margin-bottom: var(--space-3);
}

.contrast-preview__sample-body {
  font-size: var(--fs-base);
  line-height: var(--lh-relaxed);
  margin-bottom: var(--space-3);
}

.contrast-preview__sample-small {
  font-size: var(--fs-sm);
  line-height: var(--lh-normal);
}

/* Contrast score panel */
.contrast-score {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-5);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-subtle);
  text-align: center;
  background-color: var(--surface-sunken);
}

.contrast-score__ratio {
  font-size: clamp(2rem, 4vw + 1rem, 3rem);
  font-weight: var(--fw-extrabold);
  font-family: var(--font-mono);
  letter-spacing: var(--ls-tight);
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.contrast-score__label {
  font-size: var(--fs-sm);
  color: var(--text-secondary);
}

.contrast-score__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
}

.contrast-score--pass .contrast-score__ratio { color: var(--success-600); }
.contrast-score--pass .contrast-score__badge {
  background-color: var(--success-100);
  color: var(--success-700);
}

.contrast-score--fail .contrast-score__ratio { color: var(--danger-600); }
.contrast-score--fail .contrast-score__badge {
  background-color: var(--danger-100);
  color: var(--danger-700);
}

/* Result list */
.contrast-results {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.contrast-result {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-3) var(--space-4);
  background-color: var(--surface-raised);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
}

.contrast-result__info {
  min-width: 0;
}

.contrast-result__title {
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--text-primary);
  line-height: 1.3;
}

.contrast-result__desc {
  font-size: var(--fs-xs);
  color: var(--text-tertiary);
  margin-top: 2px;
}

.contrast-result__status {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  flex-shrink: 0;
}

.contrast-result--pass .contrast-result__status {
  background-color: var(--success-100);
  color: var(--success-700);
}

.contrast-result--fail .contrast-result__status {
  background-color: var(--danger-100);
  color: var(--danger-700);
}

.contrast-result--pass .contrast-result__status::before {
  content: "✓";
  font-weight: var(--fw-bold);
}

.contrast-result--fail .contrast-result__status::before {
  content: "×";
  font-weight: var(--fw-bold);
  font-size: 0.875rem;
}

/* --------------------------------------------------------------------------
   8. COLOR MIXER
   -------------------------------------------------------------------------- */
.mixer {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: var(--space-4);
}

@media (max-width: 47.99rem) {
  .mixer {
    grid-template-columns: 1fr;
    justify-items: center;
  }
}

.mixer__side {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
  width: 100%;
}

.mixer__swatch {
  width: 100%;
  aspect-ratio: 1 / 1;
  max-width: 8rem;
  border-radius: var(--radius-xl);
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.08), var(--shadow-md);
  transition: background-color var(--duration-fast) var(--ease-out);
}

.mixer__plus {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  background-color: var(--surface-muted);
  color: var(--text-secondary);
  flex-shrink: 0;
}

.mixer__plus svg {
  width: 1rem;
  height: 1rem;
}

.mixer__result {
  width: 100%;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-xl);
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.08), var(--shadow-md);
  transition: background-color var(--duration-fast) var(--ease-out);
}

/* --------------------------------------------------------------------------
   9. COLOR BLINDNESS SIMULATOR
   -------------------------------------------------------------------------- */
.blindness-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(11rem, 1fr));
  gap: var(--space-4);
}

.blindness-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-3);
  background-color: var(--surface-raised);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  transition: border-color var(--duration-fast) var(--ease-out),
    box-shadow var(--duration-fast) var(--ease-out);
}

.blindness-card.is-active {
  border-color: var(--brand-primary);
  box-shadow: 0 0 0 2px var(--brand-primary-soft);
}

.blindness-card__preview {
  width: 100%;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.06);
}

.blindness-card__label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: var(--ls-wide);
}

.blindness-card__desc {
  font-size: var(--fs-xs);
  color: var(--text-tertiary);
  line-height: 1.4;
}

/* --------------------------------------------------------------------------
   10. IMAGE COLOR PICKER
   -------------------------------------------------------------------------- */
.image-drop {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  padding: var(--space-10) var(--space-6);
  border: 2px dashed var(--border-default);
  border-radius: var(--radius-xl);
  background-color: var(--surface-sunken);
  cursor: pointer;
  text-align: center;
  transition: border-color var(--duration-fast) var(--ease-out),
    background-color var(--duration-fast) var(--ease-out);
}

.image-drop:hover,
.image-drop.is-dragover {
  border-color: var(--brand-primary);
  background-color: var(--brand-primary-soft);
}

.image-drop__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3.5rem;
  height: 3.5rem;
  border-radius: 50%;
  background-color: var(--surface-raised);
  color: var(--brand-primary);
  box-shadow: var(--shadow-xs);
}

.image-drop__icon svg {
  width: 1.75rem;
  height: 1.75rem;
}

.image-drop__title {
  font-size: var(--fs-base);
  font-weight: var(--fw-semibold);
  color: var(--text-primary);
}

.image-drop__text {
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  max-width: 22rem;
  line-height: var(--lh-relaxed);
}

.image-drop__hint {
  font-size: var(--fs-xs);
  color: var(--text-tertiary);
  margin-top: var(--space-2);
}

/* Image canvas area */
.image-stage {
  position: relative;
  width: 100%;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background-color: var(--surface-muted);
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.06);
}

.image-stage canvas {
  display: block;
  width: 100%;
  height: auto;
  cursor: crosshair;
}

.image-stage__loupe {
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
  width: 6rem;
  height: 6rem;
  border-radius: 50%;
  border: 3px solid var(--surface-base);
  box-shadow: var(--shadow-lg);
  pointer-events: none;
  display: none;
  background-size: 600% 600%;
  background-repeat: no-repeat;
}

/* Extracted palette */
.extracted-palette {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(5rem, 1fr));
  gap: var(--space-2);
}

/* --------------------------------------------------------------------------
   11. HARMONY TOOL
   -------------------------------------------------------------------------- */
.harmony-wheel {
  position: relative;
  width: 100%;
  aspect-ratio: 1 / 1;
  max-width: 24rem;
  margin-inline: auto;
  border-radius: 50%;
  background: conic-gradient(
    #ff0000 0deg,
    #ffff00 60deg,
    #00ff00 120deg,
    #00ffff 180deg,
    #0000ff 240deg,
    #ff00ff 300deg,
    #ff0000 360deg
  );
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.08), var(--shadow-md);
}

.harmony-wheel__center {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 40%;
  height: 40%;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  background-color: var(--surface-base);
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.08);
}

.harmony-wheel__dot {
  position: absolute;
  width: 1.5rem;
  height: 1.5rem;
  border-radius: 50%;
  border: 3px solid #ffffff;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.25), var(--shadow-md);
  transform: translate(-50%, -50%);
  transition: transform var(--duration-fast) var(--ease-out);
}

/* Harmony result swatches */
.harmony-swatches {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(6rem, 1fr));
  gap: var(--space-3);
}

.harmony-swatch {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.harmony-swatch__color {
  width: 100%;
  aspect-ratio: 1 / 1;
  border-radius: var(--radius-lg);
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.08);
  cursor: pointer;
  transition: transform var(--duration-fast) var(--ease-out);
}

.harmony-swatch__color:hover {
  transform: scale(1.03);
}

.harmony-swatch__label {
  text-align: center;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-secondary);
}

/* --------------------------------------------------------------------------
   12. RANDOM GENERATOR
   -------------------------------------------------------------------------- */
.random-display {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-8) var(--space-5);
  border-radius: var(--radius-xl);
  text-align: center;
  transition: background-color var(--duration-fast) var(--ease-out);
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.06);
}

.random-display__hex {
  font-family: var(--font-mono);
  font-size: clamp(1.75rem, 4vw + 1rem, 3rem);
  font-weight: var(--fw-extrabold);
  letter-spacing: 0.02em;
  text-transform: uppercase;
  line-height: 1;
}

.random-display__rgb {
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  opacity: 0.85;
}

/* --------------------------------------------------------------------------
   13. CSS TOOLS — CODE OUTPUT
   -------------------------------------------------------------------------- */
.css-output {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.css-output__preview {
  padding: var(--space-6);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  text-align: center;
  font-weight: var(--fw-semibold);
  transition: background-color var(--duration-fast) var(--ease-out),
    color var(--duration-fast) var(--ease-out);
}

.css-output__code {
  position: relative;
  background-color: var(--surface-code);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.css-output__code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  border-bottom: 1px solid var(--border-subtle);
  background-color: var(--surface-sunken);
}

.css-output__code-lang {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: var(--ls-wide);
}

.css-output__code pre {
  margin: 0;
  padding: var(--space-4);
  background: transparent;
  border: none;
  border-radius: 0;
  font-size: var(--fs-sm);
  line-height: var(--lh-relaxed);
  overflow-x: auto;
}

/* --------------------------------------------------------------------------
   14. DEVELOPER TOOLKIT — GRID
   -------------------------------------------------------------------------- */
.dev-toolkit {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
}

@media (min-width: 48rem) {
  .dev-toolkit {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 64rem) {
  .dev-toolkit {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* --------------------------------------------------------------------------
   15. TOKEN / VARIABLE LIST
   -------------------------------------------------------------------------- */
.token-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
}

.token-row {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  background-color: var(--surface-sunken);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
}

.token-row__swatch {
  flex-shrink: 0;
  width: 1.25rem;
  height: 1.25rem;
  border-radius: var(--radius-xs);
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.1);
}

.token-row__name {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--text-primary);
}

.token-row__value {
  color: var(--text-tertiary);
  font-size: var(--fs-xs);
  text-transform: uppercase;
}

/* --------------------------------------------------------------------------
   16. SHARE / URL BAR
   -------------------------------------------------------------------------- */
.share-bar {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2);
  background-color: var(--surface-sunken);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
}

.share-bar__input {
  flex: 1;
  min-width: 0;
  padding: var(--space-2) var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--text-secondary);
  background: transparent;
  border: none;
  outline: none;
  text-overflow: ellipsis;
}

/* --------------------------------------------------------------------------
   17. RESPONSIVE
   -------------------------------------------------------------------------- */
@media (max-width: 47.99rem) {
  .tool-panel {
    padding: var(--space-4);
  }

  .picker__preview {
    height: 8rem;
  }

  .gradient-preview {
    height: 10rem;
  }

  .harmony-wheel {
    max-width: 18rem;
  }
}

/* --------------------------------------------------------------------------
   END OF FILE
   -------------------------------------------------------------------------- */