/* ============================================================
   Elly's Color Playground — Styles
   Imports tokens.css; no hardcoded hex values here.
   ============================================================ */

@import './tokens.css';

/* ── Reset ── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  height: 100%;
  overflow: hidden;
}

body {
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  line-height: var(--line-height-relaxed);
  color: var(--color-text-primary);
  background-color: var(--color-bg-default);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

ul, ol {
  list-style: none;
}

button {
  font: inherit;
}

/* ── Skip link ── */
.skip-link {
  position: absolute;
  top: -100%;
  left: 16px;
  z-index: 100;
  padding: 8px 16px;
  background: var(--color-primary-button-fill);
  color: var(--color-primary-button-text);
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  font-weight: 500;
  border-radius: 8px;
  text-decoration: none;
  transition: top 0.15s;
}
.skip-link:focus {
  top: 16px;
}

/* ── Focus ring ── */
:focus-visible {
  outline: 2px solid var(--color-brand-500);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ── Typography helpers ── */
.t-h1 {
  font-family: var(--font-heading);
  font-size: var(--font-size-2xl);
  font-weight: 700;
  line-height: var(--line-height-snug);
  letter-spacing: var(--letter-spacing-tight);
  color: var(--color-text-dark);
}
.t-h2 {
  font-family: var(--font-heading);
  font-size: var(--font-size-lg);
  font-weight: 500;
  line-height: var(--line-height-snug);
  letter-spacing: var(--letter-spacing-normal);
  color: var(--color-text-dark);
}
.t-label-caps {
  font-family: var(--font-body);
  font-size: var(--font-size-xs);
  font-weight: 700;
  line-height: var(--line-height-base);
  letter-spacing: var(--letter-spacing-wider);
  color: var(--color-text-light);
  text-transform: uppercase;
}
.t-label-base {
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  font-weight: 500;
  line-height: var(--line-height-base);
  color: var(--color-text-dark);
}
.t-label-sm {
  font-family: var(--font-body);
  font-size: var(--font-size-xs);
  font-weight: 500;
  line-height: var(--line-height-base);
  color: var(--color-text-primary);
}
.t-body-sm {
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  font-weight: 400;
  line-height: var(--line-height-relaxed);
  color: var(--color-text-primary);
}
.t-body-xs {
  font-family: var(--font-body);
  font-size: var(--font-size-xs);
  font-weight: 400;
  line-height: var(--line-height-relaxed);
  color: var(--color-text-primary);
}

/* ── Screen-reader only ── */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ============================================================
   App layout
   ============================================================ */

.app {
  display: flex;
  flex-direction: column;
  height: 100%;
  background-color: var(--color-bg-default);
}

/* Mobile-only H1 — hidden on desktop */
.mobile-title {
  display: none;
}

/* ── Body: sidebar + main side by side ── */
.app-body {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: row;
}

/* ── Sidebar wrapper ── */
.sidebar-wrapper {
  display: flex;
  flex-direction: column;
  padding: 24px;
  height: 100%;
  overflow-y: auto;
  flex-shrink: 0;
}

.sidebar {
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border-default);
  border-radius: 32px;
  box-shadow: 0 4px 40px 0 rgba(0, 0, 0, 0.04);
  padding: 24px;
  width: 300px;
  display: flex;
  flex-direction: column;
  gap: 32px;
  flex: 1;
}

.sidebar-section {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.sidebar-divider {
  height: 1px;
  background: var(--color-border-default);
  border: none;
  flex-shrink: 0;
}

/* ── Main content ── */
.main {
  flex: 1;
  min-width: 0;
  min-height: 0;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 32px;
  padding: 24px 24px 40px 12px;
  position: relative;
}

/* ============================================================
   Header
   ============================================================ */

.header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  padding: 0 0 12px;
  flex-shrink: 0;
  position: relative;
}

.header__brand {
  display: flex;
  align-items: flex-end;
  gap: 16px;
}

.header__mascot {
  flex-shrink: 0;
  width: 96px;
  height: auto;
  object-fit: contain;
  pointer-events: none;
  user-select: none;
  margin-bottom: -8px;
}

.header__actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ============================================================
   Buttons
   ============================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 40px;
  min-height: 44px;
  padding: 0 16px;
  border-radius: 8px;
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  font-weight: 500;
  line-height: var(--line-height-base);
  white-space: nowrap;
  cursor: pointer;
  border: 1px solid transparent;
  text-decoration: none;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}
.btn:disabled {
  cursor: not-allowed;
}

.btn--primary {
  background: var(--color-primary-button-fill);
  color: var(--color-primary-button-text);
}
.btn--primary:hover:not(:disabled) {
  background: var(--color-primary-button-hover-fill);
}
.btn--primary:disabled {
  background: var(--color-primary-button-disabled-fill);
}

.btn--secondary {
  background: var(--color-secondary-button-fill);
  color: var(--color-secondary-button-text);
  border-color: var(--color-secondary-button-border);
}
.btn--secondary:hover:not(:disabled) {
  background: var(--color-secondary-button-hover-fill);
  border-color: var(--color-secondary-button-hover-border);
}
.btn--secondary:disabled {
  background: var(--color-secondary-button-disabled-fill);
  color: var(--color-secondary-button-disabled-text);
}

/* "Copy hex" success state */
.btn--copied {
  background: var(--color-brand-900);
  color: var(--color-primary-button-text);
  border-color: transparent;
}

/* ============================================================
   Form inputs
   ============================================================ */

.text-input {
  flex: 1;
  height: 40px;
  min-height: 44px;
  padding: 0 12px;
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border-default);
  border-radius: 8px;
  font-family: var(--font-body);
  font-size: var(--font-size-xs);
  font-weight: 400;
  line-height: var(--line-height-relaxed);
  color: var(--color-text-primary);
  min-width: 0;
  transition: border-color 0.15s;
}
.text-input::placeholder {
  color: var(--color-text-light);
}
.text-input:hover {
  border-color: var(--color-neutrals-300);
}
.text-input:focus {
  outline: 2px solid var(--color-brand-500);
  outline-offset: -1px;
  border-color: transparent;
}
.text-input.is-error {
  border-color: var(--color-functional-red-900);
}

.input-error {
  font-family: var(--font-body);
  font-size: var(--font-size-xs);
  font-weight: 400;
  line-height: var(--line-height-relaxed);
  color: var(--color-functional-red-900);
  margin-top: 4px;
  display: none;
}
.input-error.is-visible {
  display: block;
}

/* ============================================================
   Sidebar — palette color list
   ============================================================ */

.color-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.palette-empty {
  font-family: var(--font-body);
  font-size: var(--font-size-xs);
  font-weight: 400;
  color: var(--color-text-light);
  font-style: italic;
}

.color-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
  gap: 8px;
}
.color-item:hover {
  background: var(--color-bg-default);
}
.color-item.is-selected {
  background: var(--color-brand-100);
  border-color: var(--color-brand-500);
}

.color-item__container {
  display: flex;
  align-items: center;
  gap: 16px;
  min-width: 0;
  flex: 1;
}

.color-item__swatch {
  width: 32px;
  height: 32px;
  border-radius: 4px;
  flex-shrink: 0;
}

.color-item__info {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.color-item__name {
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  font-weight: 500;
  line-height: var(--line-height-base);
  color: var(--color-text-dark);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.color-item__hex {
  font-family: var(--font-body);
  font-size: var(--font-size-xs);
  font-weight: 400;
  line-height: var(--line-height-relaxed);
  color: var(--color-text-primary);
  white-space: nowrap;
}

/* Inline name editor */
.color-item__name-input {
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  font-weight: 500;
  line-height: var(--line-height-base);
  color: var(--color-text-dark);
  background: transparent;
  border: none;
  border-bottom: 1.5px solid var(--color-brand-500);
  border-radius: 0;
  padding: 0;
  width: 100%;
  outline: none;
}
.color-item__name-input::selection {
  background: var(--color-brand-100);
}
.icon-btn--edit.is-active {
  background: var(--color-brand-100);
  color: var(--color-brand-500);
}

.color-item__actions {
  display: flex;
  gap: 16px;
  flex-shrink: 0;
}

/* ── Icon buttons (edit / delete) ── */
.icon-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border: none;
  background: transparent;
  border-radius: 4px;
  cursor: pointer;
  color: var(--color-text-light);
  transition: background 0.15s, color 0.15s;
  /* Expand hit area to meet 44px touch target without affecting layout */
  padding: 8px;
  margin: -8px;
  position: relative;
}
.icon-btn:hover {
  background: var(--color-bg-default);
  color: var(--color-text-primary);
}
.icon-btn svg {
  width: 12px;
  height: 12px;
  pointer-events: none;
  flex-shrink: 0;
}
.icon-btn--delete:hover {
  background: var(--color-functional-red-100);
  color: var(--color-functional-red-900);
}

/* ── Section heading row (label + inline action) ── */
.section-heading-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Small button variant — used next to section headings */
.btn--sm {
  height: 28px;
  min-height: 28px;
  padding: 0 10px;
  font-size: var(--font-size-xs);
  border-radius: 6px;
}


/* ── Add color section ── */
.add-color-row {
  display: flex;
  gap: 8px;
  align-items: flex-start;
}

.add-color-inputs {
  display: flex;
  gap: 8px;
  align-items: center;
  flex: 1;
  min-width: 0;
}

/* Native color picker trigger */
.color-picker-btn {
  width: 40px;
  height: 40px;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border-default);
  border-radius: 8px;
  cursor: pointer;
  flex-shrink: 0;
  position: relative;
  overflow: hidden;
  transition: border-color 0.15s;
  padding: 0;
}
.color-picker-btn:hover {
  border-color: var(--color-brand-500);
}
.color-picker-btn svg {
  width: 24px;
  height: 24px;
  pointer-events: none;
  flex-shrink: 0;
}
#picker-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}
/* Native color input overlaid on button */
.color-picker-btn input[type="color"] {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
  border: none;
  padding: 0;
}

/* ============================================================
   Card
   ============================================================ */

.card {
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border-default);
  border-radius: 24px;
  box-shadow: 0 4px 40px 0 rgba(0, 0, 0, 0.04);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 40px;
  flex-shrink: 0;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-title-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

/* ============================================================
   Color editor card
   ============================================================ */

/* Preview row */
.color-preview {
  display: flex;
  align-items: center;
  gap: 16px;
}

.color-preview__swatch {
  width: 64px;
  height: 64px;
  border-radius: 8px;
  flex-shrink: 0;
}

.color-preview__values {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.color-preview__hex {
  font-family: var(--font-heading);
  font-size: var(--font-size-lg);
  font-weight: 500;
  line-height: var(--line-height-snug);
  color: var(--color-text-dark);
}

.color-preview__hsl {
  font-family: var(--font-body);
  font-size: var(--font-size-xs);
  font-weight: 400;
  line-height: var(--line-height-relaxed);
  color: var(--color-text-primary);
}

/* Empty editor state
   NOTE: no display rule here — the [hidden] attribute must be able to
   override the default. Centering is achieved via padding + text-align. */
.editor-empty {
  min-height: 220px;
  padding: 60px 24px;
  text-align: center;
  color: var(--color-text-light);
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  font-weight: 400;
}

/* Spacing between major sections inside the active editor */
#editor-active > * + * {
  margin-top: 40px;
}

/* ── HSL sliders ── */
.hsl-sliders {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.slider-row {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 4px 0;
}

.slider-label {
  font-family: var(--font-body);
  font-size: var(--font-size-xs);
  font-weight: 500;
  line-height: var(--line-height-base);
  color: var(--color-text-primary);
  width: 80px;
  flex-shrink: 0;
}

.slider-track-wrap {
  flex: 1;
  min-width: 0;
  display: flex;
  align-items: center;
}

.slider-value {
  font-family: var(--font-body);
  font-size: var(--font-size-xs);
  font-weight: 500;
  line-height: var(--line-height-base);
  color: var(--color-text-primary);
  width: 36px;
  text-align: right;
  flex-shrink: 0;
}

/* Range inputs — cross-browser */
input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 200px;
  cursor: pointer;
  background: var(--color-neutrals-300); /* fallback */
}
input[type="range"]:focus {
  outline: none;
}
input[type="range"]:focus-visible {
  outline: 2px solid var(--color-brand-500);
  outline-offset: 4px;
  border-radius: 200px;
}

/* Hue — rainbow */
input[type="range"].slider--hue {
  background: linear-gradient(
    to right,
    hsl(0,100%,50%)   0%,
    hsl(60,100%,50%)  17%,
    hsl(120,100%,50%) 33%,
    hsl(180,100%,50%) 50%,
    hsl(240,100%,50%) 67%,
    hsl(300,100%,50%) 83%,
    hsl(360,100%,50%) 100%
  );
}

/* Saturation — gray → vivid (updated via JS CSS vars) */
input[type="range"].slider--saturation {
  background: linear-gradient(
    to right,
    hsl(var(--slider-h, 197), 0%,   var(--slider-l, 31%)),
    hsl(var(--slider-h, 197), 100%, var(--slider-l, 31%))
  );
}

/* Lightness — dark → current hue → light */
input[type="range"].slider--lightness {
  background: linear-gradient(
    to right,
    hsl(var(--slider-h, 197), var(--slider-s, 100%), 5%),
    hsl(var(--slider-h, 197), var(--slider-s, 100%), 50%),
    hsl(var(--slider-h, 197), var(--slider-s, 100%), 95%)
  );
}

/* Webkit track */
input[type="range"]::-webkit-slider-runnable-track {
  height: 6px;
  border-radius: 200px;
}

/* Webkit thumb */
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--color-bg-surface);
  border: 2.5px solid var(--color-brand-500);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
  margin-top: -6px;
  cursor: pointer;
  transition: border-color 0.15s, box-shadow 0.15s;
}
input[type="range"]:hover::-webkit-slider-thumb {
  border-color: var(--color-brand-900);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
}

/* Firefox track */
input[type="range"]::-moz-range-track {
  height: 6px;
  border-radius: 200px;
}

/* Firefox thumb */
input[type="range"]::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--color-bg-surface);
  border: 2.5px solid var(--color-brand-500);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
  cursor: pointer;
  transition: border-color 0.15s;
}
input[type="range"]:hover::-moz-range-thumb {
  border-color: var(--color-brand-900);
}

/* ── Shade strip ── */
.shades-section {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.shade-strip {
  display: flex;
  gap: 8px;
  height: 80px;
}

.shade-item {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  height: 100%;
}

.shade-item__swatch {
  flex: 1;
  min-height: 0;
  width: 100%;
  border-radius: 4px;
}

.shade-item__label {
  font-family: var(--font-body);
  font-size: var(--font-size-xs);
  font-weight: 400;
  line-height: var(--line-height-relaxed);
  color: var(--color-text-primary);
  white-space: nowrap;
}

.shade-item.is-active .shade-item__label {
  font-weight: 700;
  /* color set via JS to match the shade color */
}

/* ============================================================
   Contrast matrix card
   ============================================================ */

/* ── Filter bar ── */
.filter-bar {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.filter-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* Chip = label wrapping hidden checkbox + visual checkbox + text */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 32px;
  min-height: 44px;
  padding: 6px 10px;
  border: 1px solid var(--color-border-default);
  border-radius: 4px;
  background: var(--color-bg-surface);
  cursor: pointer;
  user-select: none;
  transition: border-color 0.15s;
}
.chip:hover {
  border-color: var(--color-neutrals-300);
}

/* Hide native checkbox visually */
.chip__input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
  pointer-events: none;
}

/* Visual checkbox box */
.chip__box {
  width: 14px;
  height: 14px;
  border-radius: 2px;
  border: 0.85px solid var(--color-checkbox-border-unchecked);
  background: var(--color-checkbox-fill-unchecked);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  transition: background 0.15s, border-color 0.15s;
}

.chip__input:checked ~ .chip__box {
  background: var(--color-checkbox-fill-checked);
  border-color: var(--color-checkbox-fill-checked);
}

.chip__checkmark {
  display: none;
  pointer-events: none;
  flex-shrink: 0;
  color: var(--color-checkbox-icon-checked);
}
.chip__checkmark svg {
  display: block;
}
.chip__input:checked ~ .chip__box .chip__checkmark {
  display: block;
}

.chip__label {
  font-family: var(--font-body);
  font-size: var(--font-size-xs);
  font-weight: 500;
  line-height: var(--line-height-base);
  color: var(--color-text-dark);
  white-space: nowrap;
}

.chip__score {
  font-family: var(--font-body);
  font-size: var(--font-size-xs);
  font-weight: 400;
  line-height: var(--line-height-relaxed);
  color: var(--color-text-primary);
  white-space: nowrap;
}

/* ── Matrix ── */
.matrix-scroll {
  overflow-x: auto;
  tabindex: 0; /* applied in HTML */
}

.matrix-table {
  border-collapse: separate;
  border-spacing: 6px;
  table-layout: fixed;
}

/* Corner label cell */
.matrix-corner {
  width: 100px;
  padding-right: 8px;
  padding-bottom: 12px;
  vertical-align: bottom;
  font-family: var(--font-body);
  font-size: var(--font-size-xs);
  font-weight: 500;
  line-height: var(--line-height-base);
  color: var(--color-text-primary);
}
.matrix-corner p {
  white-space: nowrap;
}

/* Column header cell */
.matrix-col-header {
  width: 112px;
  padding-bottom: 12px;
  vertical-align: bottom;
  text-align: center;
}
.matrix-col-header__swatch {
  width: 24px;
  height: 24px;
  border-radius: 4px;
  margin: 0 auto 6px;
}
.matrix-col-header__hex {
  font-family: var(--font-body);
  font-size: var(--font-size-xs);
  font-weight: 400;
  line-height: var(--line-height-relaxed);
  color: var(--color-text-primary);
  white-space: nowrap;
}

/* Row header cell */
.matrix-row-header {
  width: 100px;
  vertical-align: middle;
  padding-right: 0;
}
.matrix-row-header__inner {
  display: flex;
  align-items: center;
  gap: 8px;
}
.matrix-row-header__swatch {
  width: 20px;
  height: 20px;
  border-radius: 4px;
  flex-shrink: 0;
}
.matrix-row-header__hex {
  font-family: var(--font-body);
  font-size: var(--font-size-xs);
  font-weight: 400;
  line-height: var(--line-height-relaxed);
  color: var(--color-text-primary);
  white-space: nowrap;
}

/* Data cell */
.matrix-cell {
  width: 112px;
  height: 80px;
  border-radius: 4px;
  border: 1px solid rgba(26, 26, 28, 0.06);
  padding: 5px;
  vertical-align: top;
  position: relative;
}

/* Diagonal — same colour on itself */
.matrix-cell--diagonal {
  background: var(--color-bg-default);
  border-color: var(--color-border-default);
  text-align: center;
  vertical-align: middle;
}
.matrix-cell--diagonal span {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-border-default);
}

/* "Text" label at top of cell */
.matrix-cell__text {
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  font-weight: 500;
  line-height: var(--line-height-base);
  display: block;
  white-space: nowrap;
}

/* Meta badge pinned to cell bottom */
.matrix-cell__meta {
  position: absolute;
  bottom: 5px;
  left: 5px;
  right: 5px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 4px 5px;
  border-radius: 2px;
  border: 1px solid;
}
.matrix-cell__ratio {
  font-family: var(--font-body);
  font-size: var(--font-size-xs);
  font-weight: 400;
  line-height: var(--line-height-relaxed);
}
.matrix-cell__badge {
  font-family: var(--font-body);
  font-size: var(--font-size-xs);
  font-weight: 500;
  line-height: var(--line-height-base);
}

/* Status colour sets */
.meta--pass {
  background: var(--color-status-pass);
  border-color: var(--color-status-pass-fg);
  color: var(--color-status-pass-fg);
}
.meta--warning {
  background: var(--color-status-warning);
  border-color: var(--color-status-warning-fg);
  color: var(--color-status-warning-fg);
}
.meta--fail {
  background: var(--color-status-fail);
  border-color: var(--color-status-fail-fg);
  color: var(--color-status-fail-fg);
}

/* Filter: hide cells without affecting table structure */
.matrix-cell.is-filtered {
  visibility: hidden;
}

/* Empty states */
.matrix-empty {
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  font-weight: 400;
  color: var(--color-text-light);
  text-align: center;
  padding: 32px 0;
}

/* ============================================================
   Saved palette items
   ============================================================ */

.saved-palettes-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.saved-palette-item {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid transparent;
  cursor: pointer;
  overflow: hidden;
  transition: background 0.15s, border-color 0.15s;
  list-style: none;
}
.saved-palette-item:hover {
  background: var(--color-bg-default);
}
.saved-palette-item.is-active {
  background: var(--color-brand-100);
  border-color: var(--color-brand-500);
}

.saved-palette-item__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.saved-palette-item__name-group {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
  min-width: 0;
  overflow: hidden;
}

.saved-palette__name {
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  font-weight: 500;
  line-height: var(--line-height-base);
  color: var(--color-text-dark);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.saved-palette__name-input {
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  font-weight: 500;
  line-height: var(--line-height-base);
  color: var(--color-text-dark);
  background: transparent;
  border: none;
  border-bottom: 1.5px solid var(--color-brand-500);
  border-radius: 0;
  padding: 0;
  min-width: 0;
  width: 100%;
  outline: none;
}
.saved-palette__name-input::selection {
  background: var(--color-brand-100);
}

.saved-palette-item__swatches {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.saved-palette__swatch {
  width: 20px;
  height: 20px;
  border-radius: 4px;
  flex-shrink: 0;
}

/* ============================================================
   Mobile palette actions row (hidden on desktop)
   ============================================================ */

.palette-actions-mobile {
  display: none;
}

/* ============================================================
   Responsive — mobile (≤ 768px)
   ============================================================ */

@media (max-width: 768px) {
  html, body {
    height: auto;
    overflow: auto;
  }

  /* ── App layout: single column ── */
  .app {
    height: auto;
    overflow: visible;
  }

  .app-body {
    flex-direction: column;
    overflow: visible;
  }

  /* ── Mobile H1 shown, desktop header hidden ── */
  .mobile-title {
    display: block;
    padding: 24px 16px 0;
  }

  .header {
    display: none;
  }

  /* ── Sidebar: full width, no fixed height ── */
  .sidebar-wrapper {
    height: auto;
    overflow: visible;
    padding: 16px 16px 0;
  }

  .sidebar {
    width: 100%;
    border-radius: 24px;
    flex: unset;
    gap: 24px;
  }

  /* ── Main: full width, no fixed height ── */
  .main {
    min-height: unset;
    overflow: visible;
    padding: 16px 16px 40px;
    gap: 16px;
  }

  /* ── Mobile Export + Save palette buttons inside palette section ── */
  .palette-actions-mobile {
    display: flex;
    gap: 8px;
    width: 100%;
  }

  .palette-actions-mobile .btn {
    flex: 1;
  }

  /* ── Cards: full width, smaller radius ── */
  .card {
    border-radius: 16px;
    gap: 24px;
  }

  /* ── Colour items: full width ── */
  .color-item {
    width: 100%;
  }

  /* ── Saved palette items: full width ── */
  .saved-palette-item {
    width: 100%;
  }

  /* ── Matrix: only the scroll region scrolls, card stays full-width ── */
  .matrix-scroll {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    width: 100%;
  }

  /* ── Cell meta: stack ratio + badge vertically on mobile ── */
  .matrix-cell__meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 1px;
    padding: 3px 4px;
  }

  /* ── Filter chips: allow wrapping ── */
  .filter-chips {
    gap: 8px;
  }
}