/* ==========================================================================
   DESIGN / design.css — page-private styles for /design/
   Governs: swatch wall, three lenses, type stack, rule list, motion demo.
   Constitution: opacity + transform only, <= 260ms, reduced-motion silent.
   ========================================================================== */

/* ---------- Philosophy: laws & lenses ---------- */
.design-laws {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 32px;
  margin-top: 32px;
}
.design-law {
  border-top: 1px solid #d8d2c8;
  padding-top: 20px;
}
.design-law b {
  display: block;
  font-family: "Galok Floane", Georgia, serif;
  font-size: 1.35rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.design-law p {
  margin-top: 10px;
  color: #3d3832;
  font-size: 0.98rem;
  line-height: 1.62;
}
.design-lenses {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  margin-top: 36px;
}
.design-lens {
  border: 1px solid #d8d2c8;
  padding: 28px 24px;
  background: #fffaf2;
  position: relative;
  transition: transform 220ms cubic-bezier(0.2, 0.8, 0.2, 1);
}
.design-lens:hover { transform: translateY(-2px); }
.design-lens h3 {
  margin-top: 14px;
  font-family: "Galok Floane", Georgia, serif;
  font-size: 1.25rem;
  font-weight: 600;
}
.design-lens p {
  margin-top: 8px;
  color: #3d3832;
  font-size: 0.95rem;
  line-height: 1.6;
}
.design-lens small {
  display: block;
  margin-top: 16px;
  font-family: "Galok Gambetta", system-ui, sans-serif;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: #77736b;
}
.design-lens-mark {
  display: inline-block;
  font-family: "Galok Glyph Display", "STKaiti", serif;
  font-size: 3.1rem;
  line-height: 1;
  color: #9e2a2b;
  -webkit-text-stroke: 0.2px;
}
.design-plate {
  margin-top: 36px;
}
.design-plate img {
  width: 100%;
  height: auto;
  display: block;
  border: 1px solid #d8d2c8;
}
.design-plate-side {
  float: right;
  width: min(420px, 46%);
  margin-left: 32px;
  margin-bottom: 12px;
}
.design-plate-wide { max-width: 360px; }
.design-note {
  clear: both;
  margin-top: 24px;
  font-size: 0.85rem;
  color: #77736b;
}

/* ---------- Palette: grouped swatch wall ---------- */
.design-palette { margin-top: 36px; }
.design-palette-group { margin-top: 28px; }
.design-palette-group:first-child { margin-top: 0; }
.design-palette-grouplabel {
  grid-column: 1 / -1;
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 12px 0;
  border-top: 1px solid #d8d2c8;
  font-family: "Galok Gambetta", system-ui, sans-serif;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  color: #77736b;
}
.design-palette-grouplabel:first-of-type { border-top: none; }
.design-grouplabel-num {
  font-family: "Galok Floane", Georgia, serif;
  font-size: 1.05rem;
  color: #9e2a2b;
  letter-spacing: 0;
}
.design-swatchwall, /* legacy class kept for JS compatibility */
.design-palette {
  display: flex;
  flex-direction: column;
}
.design-palette-group {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}
.design-swatch {
  position: relative;
  border: 1px solid #d8d2c8;
  padding: 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 176px;
  text-align: left;
  background: var(--sw);
  cursor: pointer;
  transition: transform 220ms cubic-bezier(0.2, 0.8, 0.2, 1), box-shadow 220ms cubic-bezier(0.2, 0.8, 0.2, 1);
}
.design-swatch:hover { transform: translateY(-3px); box-shadow: 0 6px 0 rgba(23, 23, 23, 0.14); }
.design-swatch:active { transform: translateY(-1px); }
.design-swatch b,
.design-swatch span,
.design-swatch small {
  display: block;
}
.design-swatch-head { }
.design-swatch-name {
  font-family: "Galok Gambetta", system-ui, sans-serif;
  font-size: 0.84rem;
  font-weight: 600;
  letter-spacing: 0.16em;
}
.design-swatch-role {
  display: block;
  margin-top: 6px;
  font-family: "Galok Gambetta", system-ui, sans-serif;
  font-size: 0.66rem;
  letter-spacing: 0.05em;
  line-height: 1.5;
  opacity: 0.75;
}
.design-swatch-chips {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: 18px;
}
.design-swatch-hex,
.design-swatch-rgb {
  font-family: "Galok Gambetta", "Source Code Pro", system-ui, monospace;
  font-size: 0.76rem;
  letter-spacing: 0.08em;
}
.design-swatch-copy {
  font-family: "Galok Gambetta", system-ui, sans-serif;
  font-size: 0.58rem;
  letter-spacing: 0.14em;
  opacity: 0.55;
  margin-left: auto;
}
.design-swatch.is-copied .design-swatch-copy { opacity: 1; }
.design-swatch.is-copied {
  outline: 2px solid currentColor;
  outline-offset: -4px;
}
/* large colored corner glyph keeps each card legible at a glance */
.design-swatch-cn {
  position: absolute;
  right: 14px;
  bottom: 12px;
  font-family: "Galok HK Ming", "Source Han Serif HK", serif;
  font-size: 2.6rem;
  line-height: 1;
  opacity: 0.9;
}
/* contrast: light text on dark/hue cards */
.design-swatch[data-role="ink"],
.design-swatch[data-role="signal"],
.design-swatch[data-role="frame"],
.design-swatch[data-role="scene"],
.design-swatch[data-role="green"] { color: #f7f4ef; }
.design-swatch[data-role="paper"],
.design-swatch[data-role="muted"],
.design-swatch[data-role="line"] { color: #171717; }
.design-swatch[data-role="paper"] .design-swatch-name,
.design-swatch[data-role="muted"] .design-swatch-name,
.design-swatch[data-role="line"] .design-swatch-name { color: #171717; }
/* hairline on light cards keeps borders legible against paper */
.design-swatch[data-role="line"] { border: 1px solid #b5ad9f; }

/* ---------- Type stack ---------- */
.design-typestack {
  margin-top: 32px;
}
.design-type-row {
  display: grid;
  grid-template-columns: 40px 240px 1fr;
  gap: 24px;
  align-items: baseline;
  padding: 26px 0;
  border-top: 1px solid #d8d2c8;
}
.design-type-row:last-child { border-bottom: 1px solid #d8d2c8; }
.design-type-num {
  font-family: "Galok Glyph Display", "STKaiti", serif;
  font-size: 1.6rem;
  color: #9e2a2b;
}
.design-type-spec b {
  font-family: "Galok Floane", Georgia, serif;
  font-size: 1.15rem;
}
.design-type-spec small {
  display: block;
  margin-top: 4px;
  font-family: "Galok Gambetta", system-ui, sans-serif;
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  color: #77736b;
}
.design-type-sample {
  font-size: 1.9rem;
  line-height: 1.3;
}
.font-floane { font-family: "Galok Floane", Georgia, serif; font-weight: 600; }
.font-gambetta { font-family: "Galok Gambetta", system-ui, sans-serif; letter-spacing: 0.04em; font-size: 1.2rem; }
.font-ming { font-family: "Galok HK Ming", "Source Han Serif HK", serif; font-weight: 400; font-size: 1.45rem; }
.font-seal { font-family: "Galok Glyph Display", "STKaiti", serif; font-size: 2.6rem; letter-spacing: 0.3em; color: #9e2a2b; }

/* ---------- Grid & rules ---------- */
.design-rules {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 24px;
  margin-top: 32px;
}
.design-rule {
  border-top: 1px solid #d8d2c8;
  padding-top: 16px;
}
.design-rule b {
  display: block;
  font-family: "Galok Floane", Georgia, serif;
  font-size: 1.4rem;
  font-weight: 600;
}
.design-rule p {
  margin-top: 8px;
  font-size: 0.85rem;
  line-height: 1.55;
  color: #3d3832;
}

/* ---------- Motion ---------- */
.design-section {
  padding-top: clamp(56px, 6vw, 100px);
  padding-bottom: clamp(56px, 6vw, 100px);
}
.design-motion {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px;
  margin-top: 32px;
  align-items: start;
}
.design-motion-rule {
  border-top: 1px solid #d8d2c8;
  padding-top: 16px;
}
.design-motion-rule b {
  display: block;
  font-family: "Galok Floane", Georgia, serif;
  font-size: 1.05rem;
}
.design-motion-rule p {
  margin-top: 8px;
  font-size: 0.85rem;
  line-height: 1.55;
  color: #3d3832;
}
.design-motion-demo {
  grid-column: span 4;
  margin-top: 16px;
  position: relative;
  height: 64px;
  border: 1px solid #d8d2c8;
  display: flex;
  align-items: center;
  padding-left: 12px;
  cursor: pointer;
}
.motion-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: #9e2a2b;
  position: relative;
  left: 0;
  transition: transform 240ms cubic-bezier(0.2, 0.8, 0.2, 1);
}
.motion-path {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 56px;
  color: #d8d2c8;
}
.design-motion-demo small {
  position: absolute;
  right: 12px;
  font-family: "Galok Gambetta", system-ui, sans-serif;
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  color: #77736b;
}
.design-motion-demo.is-flying .motion-dot {
  transform: translate(calc(100cqw - 40px), -26px);
  opacity: 0.95;
}
.design-motion-demo { container-type: inline-size; }

/* ---------- Assets ---------- */
.design-assets {
  margin-top: 32px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 40px;
}
.design-assets div {
  border-top: 1px solid #d8d2c8;
  padding: 18px 0;
}
.design-assets dt {
  font-family: "Galok Floane", Georgia, serif;
  font-size: 1.05rem;
}
.design-assets dd {
  margin-top: 6px;
  font-size: 0.9rem;
  color: #3d3832;
  line-height: 1.55;
}
.design-gallery {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 32px;
}
.design-gallery figure { margin: 0; }
.design-gallery img {
  width: 100%;
  height: auto;
  display: block;
  border: 1px solid #d8d2c8;
}

/* ---------- Toast ---------- */
.design-toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(14px);
  background: #171717;
  color: #f7f4ef;
  font-family: "Galok Gambetta", system-ui, sans-serif;
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  padding: 10px 18px;
  border-radius: 2px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 220ms cubic-bezier(0.2, 0.8, 0.2, 1), transform 220ms cubic-bezier(0.2, 0.8, 0.2, 1);
  z-index: 60;
}
.design-toast.is-visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ---------- Growth: the drawn film (video) ---------- */
.growth-plate--film {
  margin-top: 36px;
  border: 1px solid #d8d2c8;
  background: #f7f4ef;
  overflow: hidden;
  padding: 0;
  width: 100%;
  max-width: 100%;
}
.growth-plate--film > * {
  display: block;
  width: 100%;
}
.growth-film {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  min-width: 0;
  background: #f7f4ef;
}
.growth-plate--film { max-width: 100%; }
@media (prefers-reduced-motion: reduce) {
  .growth-film { animation: none; }
}
.growth-figcaption {
  margin-top: 12px;
  font-family: "Galok Gambetta", system-ui, sans-serif;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: #77736b;
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .design-laws,
  .design-lenses { grid-template-columns: 1fr; gap: 20px; }
  .design-palette-group { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .design-swatch { min-height: 150px; }
  .design-rules,
  .design-motion { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .design-type-row { grid-template-columns: 36px 1fr; }
  .design-type-row .design-type-spec { grid-column: 1 / -1; }
  .design-type-sample { font-size: 1.5rem; }
  .design-gallery { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .design-plate-side { float: none; width: 100%; margin: 32px 0 0; }
  .growth-plate--film { margin-top: 28px; }
}
@media (max-width: 620px) {
  .design-palette-group { grid-template-columns: 1fr; }
  .design-swatch { min-height: 128px; padding: 16px; }
  .design-swatch-cn { font-size: 2rem; right: 10px; bottom: 8px; }
  .design-type-row { grid-template-columns: 1fr; gap: 8px; }
  .design-assets { grid-template-columns: 1fr; }
  .design-gallery { grid-template-columns: 1fr; }
  .design-rules,
  .design-motion { grid-template-columns: 1fr; }
  .design-motion-demo { grid-column: 1; }
  .design-type-sample { font-size: 1.3rem; }
  .font-seal { font-size: 2rem; }
}

@media (prefers-reduced-motion: reduce) {
  .design-lens,
  .design-swatch,
  .design-toast,
  .motion-dot { transition: none; }
  .design-motion-demo.is-flying .motion-dot {
    transition: none;
    transform: translate(calc(100cqw - 40px), -26px);
  }
}