/* Standalone stylesheet for /controller-stand/ - same isolation
   discipline as /restroom-signs/style.css (own file, not
   shared/imported), same token values chosen to match the main site by
   eye. */

:root {
  --color-bg: #f7f7f5;
  --color-surface: #ffffff;
  --color-border: #cfcfcb;
  --color-text-primary: #0a0a0a;
  --color-text-secondary: #555555;
  --color-text-tertiary: #737373;
  --color-accent: #A6685A;
  --color-success: #1f9d55;
  --color-error: #c9432f;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #17181a;
    --color-surface: #1e2022;
    --color-border: #35383b;
    --color-text-primary: #ece9e4;
    --color-text-secondary: #a6a49f;
    --color-text-tertiary: #79776f;
    --color-accent: #D9A090;
    --color-success: #4bcf8a;
    --color-error: #e2776a;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text-primary);
  font-family: var(--font-sans);
  line-height: 1.55;
}

.masthead {
  max-width: 560px;
  margin: 0 auto;
  padding: 40px 24px 28px;
}

.wordmark {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-text-secondary);
  text-decoration: none;
  margin-bottom: 24px;
}

.kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  font-weight: 600;
  margin: 0 0 10px;
}

.masthead h1 {
  font-size: clamp(1.7rem, 4.5vw, 2.3rem);
  margin: 0 0 12px;
  letter-spacing: -0.01em;
}

.dek {
  color: var(--color-text-secondary);
  font-size: 1rem;
  margin: 0;
}

main {
  max-width: 560px;
  margin: 0 auto;
  padding: 0 24px 40px;
}

.panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 22px 24px;
  margin-bottom: 20px;
}

.field-row {
  margin-bottom: 18px;
}

.field-row[hidden] { display: none; }

.field-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-text-secondary);
  margin-bottom: 6px;
}

select,
input[type="text"],
input[type="email"] {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-bg);
  color: var(--color-text-primary);
  font-family: var(--font-sans);
  font-size: 15px;
}

.engraved-note {
  font-size: 12.5px;
  color: var(--color-text-tertiary);
  margin: 6px 0 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 11px 18px;
  border-radius: 8px;
  border: 1px solid transparent;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
}

.btn:disabled { opacity: 0.45; cursor: not-allowed; }

.btn-primary {
  background: var(--color-text-primary);
  color: var(--color-bg);
}

.btn-block { width: 100%; }

.feedback-text {
  min-height: 16px;
  margin: 8px 0 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--color-text-secondary);
}

.feedback-text.error { color: var(--color-error); }
.feedback-text.success { color: var(--color-success); }
.feedback-text[hidden] { display: none; }

.result-summary {
  font-family: var(--font-mono);
  font-size: 13.5px;
  color: var(--color-text-secondary);
  margin: 0 0 6px;
}

.model-viewer-el {
  width: 100%;
  height: 260px;
  --poster-color: transparent;
  display: block;
  margin-bottom: 4px;
  border-radius: 8px;
  background: var(--color-bg);
}

.info-panel p {
  font-size: 13.5px;
  color: var(--color-text-secondary);
  margin: 0;
}

.site-foot {
  max-width: 560px;
  margin: 0 auto;
  padding: 24px 24px 56px;
  border-top: 1px solid var(--color-border);
  font-size: 12.5px;
  color: var(--color-text-tertiary);
}

.site-foot a { color: var(--color-text-secondary); }

/* Pencil box page: swatch rows + two-column selects. */
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.swatch-row { display: flex; flex-wrap: wrap; gap: 8px; }
.swatch {
  display: inline-flex; align-items: center; gap: 8px; padding: 6px 10px 6px 6px; border: 1px solid var(--color-border);
  border-radius: 999px; background: var(--color-bg); font: inherit; font-size: 13px; color: var(--color-text-primary); cursor: pointer;
}
.swatch-dot { width: 18px; height: 18px; border-radius: 50%; border: 1px solid rgba(0,0,0,0.15); }
.swatch[aria-checked="true"] { border-color: var(--color-text-primary); box-shadow: 0 0 0 1px var(--color-text-primary); }
.mode-row { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; }
.mode-option {
  padding: 10px 12px; border: 1px solid var(--color-border); border-radius: 10px; background: var(--color-bg);
  font: inherit; font-weight: 600; text-align: center; color: var(--color-text-primary); cursor: pointer;
}
.mode-option[aria-checked="true"] { border-color: var(--color-text-primary); box-shadow: 0 0 0 1px var(--color-text-primary); }
.spec-line { font-family: var(--font-mono); font-size: 12px; color: var(--color-text-secondary); margin: 8px 0 0; }
@media (max-width: 640px) { .two-col, .mode-row { grid-template-columns: 1fr; } }

/* Checkout panel heading (same as chess/style.css). */
.panel-title {
  font-size: 1.05rem;
  margin: 0 0 8px;
  letter-spacing: -0.01em;
}

.panel-subtitle {
  color: var(--color-text-secondary);
  font-size: 13.5px;
  margin: 0 0 18px;
}
.size-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; }
.size-option { display: flex; flex-direction: column; gap: 2px; padding: 10px 12px; border: 1px solid var(--color-border); border-radius: 10px; background: var(--color-surface); color: inherit; cursor: pointer; text-align: left; font: inherit; }
.size-option[aria-checked="true"] { border-color: var(--color-text-primary); box-shadow: 0 0 0 1px var(--color-text-primary); }
.size-option .size-name { font-weight: 700; font-size: 14px; }
.size-option .size-blurb { font-size: 12px; color: var(--color-text-secondary); }
.size-option .size-price { font-family: var(--font-mono, ui-monospace, monospace); font-size: 12.5px; }
.qty-row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.qty-row input[type="number"] { width: 90px; }
.qty-tiers { font-size: 12.5px; color: var(--color-text-secondary); }
.qty-total { font-family: var(--font-mono, ui-monospace, monospace); font-size: 13px; }
@media (max-width: 640px) { .size-grid { grid-template-columns: 1fr; } }

/* the periodic table as the picker: 18 columns, the two rows below; each cell its element's category colour */
.pt-grid { display: grid; grid-template-columns: repeat(18, minmax(0, 1fr)); gap: 2px; margin: 4px 0 6px; width: 100%; min-width: 0; }
.field-row:has(.pt-grid) { min-width: 0; }
.pt-cell { aspect-ratio: 1 / 1; min-width: 0; width: 100%; padding: 0; border: 1px solid transparent; border-radius: 3px; background: var(--pt, #ddd); color: #1c1c1e; font: inherit; font-size: 8px; letter-spacing: -.02em; font-weight: 700; line-height: 1; cursor: pointer; display: flex; align-items: center; justify-content: center; overflow: hidden; }
.pt-cell[aria-checked="true"] { border-color: var(--color-text-primary); box-shadow: 0 0 0 2px var(--color-text-primary); z-index: 1; }
.pt-cell:hover, .pt-cell:focus-visible { filter: brightness(1.08); }
.pt-gap { grid-column: span 1; }
.pt-legend { display: flex; flex-wrap: wrap; gap: 6px 12px; margin: 0 0 4px; font-size: 11.5px; color: var(--color-text-secondary); }
.pt-legend i { display: inline-block; width: 10px; height: 10px; border-radius: 2px; margin-right: 4px; vertical-align: -1px; }
.pt-picked { margin: 0 0 6px; font-size: 14px; }
.pt-picked b { font-size: 16px; }
@media (min-width: 720px) { .pt-cell { font-size: 12px; border-radius: 4px; } .pt-grid { gap: 3px; } }