/*
 * CheqSplitter design tokens — Material Design 3 (v3), LIGHT scheme only.
 *
 * Seed color      : #b5482f (brand terracotta)
 * Tone adjustment : Warm earth/terracotta light scheme tones (sand/ivory neutrals)
 * Light scheme only: no companion scheme block, no media queries, no external fonts.
 */

:root {
  /* ---- MD3 color roles (warm light scheme) ---- */
  --md-sys-color-primary: #B5482F;
  --md-sys-color-on-primary: #FFFFFF;
  --md-sys-color-primary-container: #FCE6E0;
  --md-sys-color-on-primary-container: #3D0B02;
  --md-sys-color-secondary: #745B4E;
  --md-sys-color-on-secondary: #FFFFFF;
  --md-sys-color-secondary-container: #F5E8DE;
  --md-sys-color-on-secondary-container: #2A1A12;
  --md-sys-color-tertiary: #6E5D30;
  --md-sys-color-on-tertiary: #FFFFFF;
  --md-sys-color-tertiary-container: #F7EAD0;
  --md-sys-color-on-tertiary-container: #251B03;
  --md-sys-color-error: #BA1A1A;
  --md-sys-color-on-error: #FFFFFF;
  --md-sys-color-error-container: #FFDAD6;
  --md-sys-color-on-error-container: #410002;
  --md-sys-color-background: #FFFCF7;
  --md-sys-color-on-background: #211B16;
  --md-sys-color-surface: #FFFCF7;
  --md-sys-color-on-surface: #211B16;
  --md-sys-color-surface-variant: #EBE2D5;
  --md-sys-color-on-surface-variant: #4D443D;
  --md-sys-color-outline: #8C827A;
  --md-sys-color-outline-variant: #D3C7B9;
  --md-sys-color-surface-dim: #E3DDD3;
  --md-sys-color-surface-bright: #FFFCF7;
  --md-sys-color-surface-container-lowest: #FFFFFF;
  --md-sys-color-surface-container-low: #FFF9F2;
  --md-sys-color-surface-container: #FFF2E3;
  --md-sys-color-surface-container-high: #FFEAD4;
  --md-sys-color-surface-container-highest: #FFE1C4;
  --md-sys-color-inverse-surface: #342E29;
  --md-sys-color-inverse-on-surface: #F7F1EA;
  --md-sys-color-inverse-primary: #FFB4A3;
  --md-sys-color-scrim: #000000;
  --md-sys-color-shadow: #000000;
  /* surface-tint drives tonal elevation; equals primary (#B5482F). */
  --md-sys-color-surface-tint: #B5482F;

  /* ---- MD3 4dp/8dp spacing scale ---- */
  --md-sys-spacing-1: 4px;
  --md-sys-spacing-2: 8px;
  --md-sys-spacing-3: 12px;
  --md-sys-spacing-4: 16px;
  --md-sys-spacing-5: 20px;
  --md-sys-spacing-6: 24px;
  --md-sys-spacing-8: 32px;
  --md-sys-spacing-10: 40px;
  --md-sys-spacing-12: 48px;

  /* ---- MD3 reference typefaces (local system stacks only) ---- */
  --md-ref-typeface-brand: "Georgia", "Times New Roman", serif;
  --md-ref-typeface-plain: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, Inter, sans-serif;

  /* ---- MD3 type scale (15 styles) ---- */
  --md-sys-typescale-display-large-font-family: var(--md-ref-typeface-brand);
  --md-sys-typescale-display-large-font-size: 57px;
  --md-sys-typescale-display-large-line-height: 64px;
  --md-sys-typescale-display-large-font-weight: 400;
  --md-sys-typescale-display-medium-font-family: var(--md-ref-typeface-brand);
  --md-sys-typescale-display-medium-font-size: 45px;
  --md-sys-typescale-display-medium-line-height: 52px;
  --md-sys-typescale-display-medium-font-weight: 400;
  --md-sys-typescale-display-small-font-family: var(--md-ref-typeface-brand);
  --md-sys-typescale-display-small-font-size: 36px;
  --md-sys-typescale-display-small-line-height: 44px;
  --md-sys-typescale-display-small-font-weight: 400;
  --md-sys-typescale-headline-large-font-family: var(--md-ref-typeface-brand);
  --md-sys-typescale-headline-large-font-size: 32px;
  --md-sys-typescale-headline-large-line-height: 40px;
  --md-sys-typescale-headline-large-font-weight: 400;
  --md-sys-typescale-headline-medium-font-family: var(--md-ref-typeface-brand);
  --md-sys-typescale-headline-medium-font-size: 28px;
  --md-sys-typescale-headline-medium-line-height: 36px;
  --md-sys-typescale-headline-medium-font-weight: 400;
  --md-sys-typescale-headline-small-font-family: var(--md-ref-typeface-brand);
  --md-sys-typescale-headline-small-font-size: 24px;
  --md-sys-typescale-headline-small-line-height: 32px;
  --md-sys-typescale-headline-small-font-weight: 400;
  --md-sys-typescale-title-large-font-family: var(--md-ref-typeface-plain);
  --md-sys-typescale-title-large-font-size: 22px;
  --md-sys-typescale-title-large-line-height: 28px;
  --md-sys-typescale-title-large-font-weight: 400;
  --md-sys-typescale-title-medium-font-family: var(--md-ref-typeface-plain);
  --md-sys-typescale-title-medium-font-size: 16px;
  --md-sys-typescale-title-medium-line-height: 24px;
  --md-sys-typescale-title-medium-font-weight: 500;
  --md-sys-typescale-title-small-font-family: var(--md-ref-typeface-plain);
  --md-sys-typescale-title-small-font-size: 14px;
  --md-sys-typescale-title-small-line-height: 20px;
  --md-sys-typescale-title-small-font-weight: 500;
  --md-sys-typescale-body-large-font-family: var(--md-ref-typeface-plain);
  --md-sys-typescale-body-large-font-size: 16px;
  --md-sys-typescale-body-large-line-height: 24px;
  --md-sys-typescale-body-large-font-weight: 400;
  --md-sys-typescale-body-medium-font-family: var(--md-ref-typeface-plain);
  --md-sys-typescale-body-medium-font-size: 14px;
  --md-sys-typescale-body-medium-line-height: 20px;
  --md-sys-typescale-body-medium-font-weight: 400;
  --md-sys-typescale-body-small-font-family: var(--md-ref-typeface-plain);
  --md-sys-typescale-body-small-font-size: 12px;
  --md-sys-typescale-body-small-line-height: 16px;
  --md-sys-typescale-body-small-font-weight: 400;
  --md-sys-typescale-label-large-font-family: var(--md-ref-typeface-plain);
  --md-sys-typescale-label-large-font-size: 14px;
  --md-sys-typescale-label-large-line-height: 20px;
  --md-sys-typescale-label-large-font-weight: 500;
  --md-sys-typescale-label-medium-font-family: var(--md-ref-typeface-plain);
  --md-sys-typescale-label-medium-font-size: 12px;
  --md-sys-typescale-label-medium-line-height: 16px;
  --md-sys-typescale-label-medium-font-weight: 500;
  --md-sys-typescale-label-small-font-family: var(--md-ref-typeface-plain);
  --md-sys-typescale-label-small-font-size: 11px;
  --md-sys-typescale-label-small-line-height: 16px;
  --md-sys-typescale-label-small-font-weight: 500;

  /* ---- MD3 shape corners ---- */
  --md-sys-shape-corner-none: 0px;
  --md-sys-shape-corner-extra-small: 4px;
  --md-sys-shape-corner-small: 8px;
  --md-sys-shape-corner-medium: 12px;
  --md-sys-shape-corner-large: 16px;
  --md-sys-shape-corner-extra-large: 28px;
  --md-sys-shape-corner-full: 9999px;

  /* ---- MD3 elevation (shadows) ---- */
  --md-sys-elevation-level0: none;
  --md-sys-elevation-level1: 0px 1px 2px rgba(60, 40, 20, 0.12), 0px 1px 3px 1px rgba(60, 40, 20, 0.08);
  --md-sys-elevation-level2: 0px 1px 2px rgba(60, 40, 20, 0.14), 0px 2px 6px 2px rgba(60, 40, 20, 0.09);
  --md-sys-elevation-level3: 0px 1px 3px rgba(60, 40, 20, 0.15), 0px 4px 8px 3px rgba(60, 40, 20, 0.10);
  --md-sys-elevation-level4: 0px 2px 3px rgba(60, 40, 20, 0.16), 0px 6px 10px 4px rgba(60, 40, 20, 0.11);
  --md-sys-elevation-level5: 0px 4px 4px rgba(60, 40, 20, 0.18), 0px 8px 12px 6px rgba(60, 40, 20, 0.12);

  /* ---- MD3 state-layer opacity (reference) ---- */
  --md-sys-state-layer-hover: 8%;
  --md-sys-state-layer-focus: 12%;
  --md-sys-state-layer-pressed: 12%;
  --md-sys-state-layer-dragged: 16%;
}

/* ---- Shared MD3 button primitives ---- */
.md3-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--md-sys-spacing-2);
  min-height: 40px;
  padding: 0 var(--md-sys-spacing-6);
  border: 0;
  border-radius: var(--md-sys-shape-corner-full);
  font-family: var(--md-sys-typescale-label-large-font-family);
  font-size: var(--md-sys-typescale-label-large-font-size);
  font-weight: var(--md-sys-typescale-label-large-font-weight);
  line-height: var(--md-sys-typescale-label-large-line-height);
  letter-spacing: 0.01em;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition: background-color 0.15s ease, box-shadow 0.15s ease;
}

.md3-button--filled {
  background: var(--md-sys-color-primary);
  color: var(--md-sys-color-on-primary);
}

.md3-button--filled:hover:not(:disabled) {
  background: color-mix(in srgb, var(--md-sys-color-primary) 92%, var(--md-sys-color-on-primary));
}

.md3-button--tonal {
  background: var(--md-sys-color-secondary-container);
  color: var(--md-sys-color-on-secondary-container);
}

.md3-button--tonal:hover:not(:disabled) {
  background: color-mix(in srgb, var(--md-sys-color-secondary-container) 90%, var(--md-sys-color-on-secondary-container));
}

.md3-button--outlined {
  border: 1px solid var(--md-sys-color-outline);
  background: transparent;
  color: var(--md-sys-color-primary);
}

.md3-button--outlined:hover:not(:disabled) {
  background: color-mix(in srgb, var(--md-sys-color-primary) var(--md-sys-state-layer-hover), transparent);
}

.md3-button--text {
  padding-inline: var(--md-sys-spacing-3);
  background: transparent;
  color: var(--md-sys-color-primary);
}

.md3-button--text:hover:not(:disabled) {
  background: color-mix(in srgb, var(--md-sys-color-primary) var(--md-sys-state-layer-hover), transparent);
}

.md3-button:focus-visible {
  outline: 2px solid var(--md-sys-color-primary);
  outline-offset: 2px;
}

.md3-button:disabled {
  background: color-mix(in srgb, var(--md-sys-color-on-surface) 12%, transparent);
  color: color-mix(in srgb, var(--md-sys-color-on-surface) 38%, transparent);
  opacity: 1;
  cursor: default;
  box-shadow: none;
}

/* ---- Shared MD3 choice-chip and consumer-picker primitives ---- */
.md3-consumer-picker {
  display: flex;
  flex-direction: column;
  gap: var(--md-sys-spacing-2);
}

.md3-consumer-picker__header,
.md3-consumer-picker__title-group,
.md3-consumer-picker__chips {
  display: flex;
  align-items: center;
}

.md3-consumer-picker__header {
  justify-content: space-between;
  gap: var(--md-sys-spacing-3);
}

.md3-consumer-picker__title-group,
.md3-consumer-picker__chips {
  flex-wrap: wrap;
  gap: var(--md-sys-spacing-2);
}

.md3-consumer-picker__title {
  color: var(--md-sys-color-on-surface-variant);
  font-family: var(--md-sys-typescale-body-medium-font-family);
  font-size: var(--md-sys-typescale-body-medium-font-size);
  font-weight: 500;
  line-height: var(--md-sys-typescale-body-medium-line-height);
}

.md3-consumer-picker__badge {
  padding: 2px 8px;
  border-radius: var(--md-sys-shape-corner-full);
  background: var(--md-sys-color-surface-container-high);
  color: var(--md-sys-color-on-surface-variant);
  font-family: var(--md-sys-typescale-label-small-font-family);
  font-size: var(--md-sys-typescale-label-small-font-size);
  font-weight: 600;
  line-height: var(--md-sys-typescale-label-small-line-height);
  white-space: nowrap;
}

.md3-consumer-picker__toggle {
  min-height: 36px;
  padding: 0 12px;
  border: 0;
  border-radius: var(--md-sys-shape-corner-full);
  background: transparent;
  color: var(--md-sys-color-primary);
  font-family: var(--md-sys-typescale-label-medium-font-family);
  font-size: var(--md-sys-typescale-label-medium-font-size);
  font-weight: 600;
  line-height: var(--md-sys-typescale-label-medium-line-height);
  white-space: nowrap;
  transition: background-color 0.15s ease;
}

.md3-consumer-picker__toggle:hover {
  background: color-mix(in srgb, var(--md-sys-color-primary) 8%, transparent);
}

.md3-choice-chip {
  display: inline-flex;
  min-height: 40px;
  align-items: center;
  gap: var(--md-sys-spacing-2);
  padding: 0 14px 0 10px;
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: var(--md-sys-shape-corner-full);
  background: var(--md-sys-color-surface-container-low);
  color: var(--md-sys-color-on-surface-variant);
  font-family: var(--md-sys-typescale-label-large-font-family);
  font-size: var(--md-sys-typescale-label-large-font-size);
  font-weight: 500;
  line-height: var(--md-sys-typescale-label-large-line-height);
  user-select: none;
  white-space: nowrap;
  transition: background-color 0.18s ease, border-color 0.18s ease, color 0.18s ease, transform 0.18s ease;
}

.md3-choice-chip:hover {
  border-color: var(--md-sys-color-outline);
  background: var(--md-sys-color-surface-container-high);
  color: var(--md-sys-color-on-surface);
}

.md3-choice-chip:active {
  transform: scale(0.97);
}

.md3-choice-chip--selected {
  border-color: var(--md-sys-color-primary);
  background: color-mix(in srgb, var(--md-sys-color-primary) 12%, var(--md-sys-color-surface-container-low));
  color: var(--md-sys-color-primary);
  font-weight: 600;
}

.md3-choice-chip--selected:hover {
  background: color-mix(in srgb, var(--md-sys-color-primary) 18%, var(--md-sys-color-surface-container-low));
}

.md3-choice-chip__avatar {
  display: flex;
  width: 22px;
  height: 22px;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--md-sys-color-surface-container-highest);
  color: var(--md-sys-color-on-surface-variant);
  font-size: 11px;
  font-weight: 700;
  transition: background-color 0.18s ease, color 0.18s ease;
}

.md3-choice-chip--selected .md3-choice-chip__avatar {
  background: var(--md-sys-color-primary);
  color: var(--md-sys-color-on-primary);
}

.md3-choice-chip__check-icon {
  animation: md3-chip-check-pop 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

@keyframes md3-chip-check-pop {
  from {
    opacity: 0;
    transform: scale(0) rotate(-45deg);
  }

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

@media (max-width: 480px) {
  .md3-consumer-picker__header {
    align-items: flex-start;
  }
}

/* ---- Base surface (MD3 light scheme) ---- */
html {
  background-color: var(--md-sys-color-surface);
}

body {
  background-color: var(--md-sys-color-surface);
  color: var(--md-sys-color-on-surface);
}