/* Buttons */
.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.6rem 1.4rem;
    border-radius: 999px;
    /* font-size / letter-spacing: css/typography.css (Body Small spec) */
    text-transform: uppercase;
    border: 1px solid var(--hairline);
    background-color: transparent;
    transition: background-color 180ms ease-out, color 180ms ease-out,
      border-color 180ms ease-out, transform 140ms ease-out;
  }
  
  .button--primary {
    background-color: rgba(255, 255, 255, 0.86);
    color: var(--ink-invert);
    border-color: rgba(255, 255, 255, 0.5);
  }
  
  .button--ghost {
    background-color: transparent;
    color: var(--ink);
  }
  
  .button:disabled {
    opacity: 0.38;
    cursor: default;
  }
  
  .button:not(:disabled):hover {
    transform: translateY(-1px);
    border-color: rgba(255, 255, 255, 0.55);
  }
  
  /* Questionnaire options */
  .option-pill {
    border-radius: 999px;
    padding: 0.45rem 1.2rem;
    /* font: typography.css — Body Small */
    border: 1px solid rgba(255, 255, 255, 0.24);
    background-color: transparent;
    color: var(--ink);
    transition: background-color 160ms ease-out, border-color 160ms ease-out,
      color 160ms ease-out;
  }
  
  .option-pill--selected {
    background-color: rgba(255, 255, 255, 0.86);
    color: var(--ink-invert);
    border-color: rgba(255, 255, 255, 0.55);
  }

  /* Questionnaire image options — 3 per question (one per climate), vertical/portrait rectangle */
  .option-image {
    display: block;
    position: relative;
    flex: 1 1 140px;
    max-width: 200px;
    aspect-ratio: 3 / 4;
    border-radius: 12px;
    overflow: hidden;
    border: 2px solid rgba(255, 255, 255, 0.24);
    background-color: rgba(255, 255, 255, 0.08);
    cursor: pointer;
    box-sizing: border-box;
    transition:
      border-color 180ms ease-out,
      border-width 180ms ease-out,
      box-shadow 180ms ease-out,
      transform 140ms ease-out;
  }

  .option-image:hover {
    border-color: rgba(255, 255, 255, 0.4);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.18);
  }

  /* Selection reads as a thicker stroke (border-width ramps up) */
  .option-image--selected {
    border-width: 5px;
    border-color: rgba(255, 255, 255, 0.92);
    box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.35), 0 10px 28px rgba(0, 0, 0, 0.22);
  }

  .option-image img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: center;
  }

  /* Refinement grid (15 images = 5×3) — fixed viewport budget, no page scroll */
  .refine-grid {
    display: grid;
    width: 100%;
    max-width: none;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    grid-template-rows: repeat(3, minmax(0, 1fr));
    /* Reserve header, section title, meta, progress, prompt gap, footer — compact grid */
    height: clamp(160px, min(calc(100svh - 20.5rem), 38vh), calc(100dvh - 20.5rem));
    max-height: min(calc(100svh - 20.5rem), 38vh);
    gap: clamp(2px, 0.65vw, 5px);
    margin-top: 0;
    margin-left: 0;
    margin-right: 0;
    min-height: 0;
    align-content: stretch;
  }

  /* Make refinement selection clearer than normal question options */
  .refine-grid .option-image {
    opacity: 0.92;
    border-width: 2px;
    max-width: none;
    width: 100%;
    height: 100%;
    min-height: 0;
    aspect-ratio: unset;
    padding: 0;
    overflow: hidden;
    /* Letterboxing from object-fit: contain */
    background: rgba(255, 255, 255, 0.06);
  }

  .refine-grid .option-image img {
    object-fit: contain;
    object-position: center;
  }

  .refine-grid .option-image--selected {
    border-width: 4px;
    border-color: rgba(255, 255, 255, 0.92);
    box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.35), 0 6px 16px rgba(0, 0, 0, 0.2);
    opacity: 1;
  }

  /* Very narrow: still 5×3 inside same height budget */
  @media (max-width: 380px) {
    .refine-grid {
      gap: 2px;
      height: clamp(140px, min(calc(100svh - 19.5rem), 36vh), calc(100dvh - 19.5rem));
      max-height: min(calc(100svh - 19.5rem), 36vh);
    }

    .refine-grid .option-image {
      border-radius: 8px;
    }
  }

  /* Subtle motion */
  .section {
    transition: opacity 260ms ease-out, transform 260ms ease-out;
  }
  
  .section--entering {
    opacity: 0;
    transform: translateY(8px);
  }
  .section--visible {
    opacity: 1;
    transform: translateY(0);
  }
  
  /* Tiny motion for processing indicator */
  @keyframes pulse-ring {
    0% {
      transform: scale(0.96);
      border-color: rgba(255, 255, 255, 0.35);
    }
    50% {
      transform: scale(1.04);
      border-color: rgba(255, 255, 255, 0.7);
    }
    100% {
      transform: scale(0.96);
      border-color: rgba(255, 255, 255, 0.35);
    }
  }
  
  .processing-indicator {
    animation: pulse-ring 1400ms ease-in-out infinite;
  }
  
  /* Results palette swatches (3×2 grid, full width of data breakdown, height proportionate) */
  .results-palette__swatch {
    position: relative;
    width: 100%;
    aspect-ratio: 1;
    min-height: 0;
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.22);
    transition: opacity 160ms ease;
  }

  /* Slightly smaller, quieter treatment for the expected environmental palette swatches */
  .results-palette.results-palette--environment .results-palette__swatch {
    border-radius: 8px;
    opacity: 0.9;
  }

  .results-palette__swatch:hover {
    opacity: 0.8;
  }

  .results-palette__swatch-hex {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.65rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: #fff;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.6);
    opacity: 0;
    transition: opacity 160ms ease;
    pointer-events: none;
  }

  .results-palette__swatch:hover .results-palette__swatch-hex {
    opacity: 1;
  }