/* Styles used only by the Generative Patterns experiment page. */
.pattern-page { min-height: 100vh; }
.pattern-main { width: min(1100px, calc(100% - 40px)); margin: 0 auto; padding: 42px 0 70px; }
.pattern-back { display: inline-block; margin-bottom: 34px; color: var(--accent-teal, #63f0d0); text-decoration: none; font-size: .9rem; }
.pattern-back:hover, .pattern-back:focus-visible { text-decoration: underline; }
.pattern-intro { max-width: 760px; margin-bottom: 34px; }
.pattern-intro h1 { margin: 10px 0 14px; font-size: clamp(2.4rem, 7vw, 4.5rem); line-height: 1.05; }
.pattern-intro > p:last-child { max-width: 680px; color: var(--text-muted, #a8a8b8); line-height: 1.8; }
.pattern-workspace { padding: clamp(18px, 3vw, 30px); border: 1px solid rgba(167,139,250,.25); border-radius: 18px; background: rgba(255,255,255,.025); box-shadow: 0 20px 70px rgba(0,0,0,.15); }
.pattern-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-bottom: 24px; }
.pattern-toolbar h2 { margin: 8px 0 0; font-size: 1.25rem; }
.pattern-actions { display: flex; flex-wrap: wrap; gap: 10px; }
.pattern-button { border: 1px solid rgba(99,240,208,.45); border-radius: 9px; padding: 11px 15px; color: var(--text-main, #f1f0f7); background: rgba(99,240,208,.06); font: inherit; font-size: .9rem; cursor: pointer; transition: background-color .2s ease, transform .2s ease; }
.pattern-button:hover { background: rgba(99,240,208,.14); transform: translateY(-1px); }
.pattern-button:focus-visible, .pattern-control input:focus-visible, .pattern-control select:focus-visible { outline: 2px solid #63f0d0; outline-offset: 3px; }
.pattern-button-primary { color: #101117; background: #63f0d0; font-weight: 700; }
.pattern-button-primary:hover { background: #8af5df; }
.pattern-controls { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; margin-bottom: 24px; }
.pattern-control { display: flex; flex-direction: column; gap: 10px; min-width: 0; color: var(--text-muted, #a8a8b8); font-size: .85rem; }
.pattern-control select { width: 100%; min-height: 38px; padding: 8px 10px; border: 1px solid rgba(167,139,250,.35); border-radius: 7px; color: var(--text-main, #f1f0f7); background: #171821; font: inherit; }
.pattern-control select option { color: #f1f0f7; background: #171821; }
.pattern-colour-input { display: flex; align-items: center; gap: 10px; }
.pattern-colour-input input[type=color] { width: 42px; height: 36px; padding: 3px; border: 1px solid rgba(255,255,255,.2); border-radius: 7px; background: transparent; cursor: pointer; }
.pattern-colour-input output, .pattern-range-control output { color: var(--text-main, #f1f0f7); font-family: monospace; }
.pattern-range-control > span { display: flex; justify-content: space-between; gap: 12px; }
.pattern-range-control input { width: 100%; accent-color: #63f0d0; cursor: pointer; }
.pattern-canvas-frame { overflow: hidden; border: 1px solid rgba(255,255,255,.1); border-radius: 12px; background: #101117; }
.pattern-canvas-stack { position: relative; width: 100%; aspect-ratio: 10 / 7; }
#pattern-canvas, #animation-canvas { position: absolute; inset: 0; display: block; width: 100%; height: 100%; }
#pattern-canvas { z-index: 1; }
#animation-canvas { z-index: 2; pointer-events: none; }
.animation-mode-control { max-width: 440px; margin: -4px 0 22px; }
.pattern-button:disabled { opacity: .45; cursor: not-allowed; transform: none; }
.pattern-status { min-height: 1.5em; margin: 14px 0 0; color: var(--text-muted, #a8a8b8); font-size: .85rem; }
.pattern-footnote { margin: 24px 0 0; color: var(--text-muted, #a8a8b8); text-align: center; font-size: .85rem; }
.pattern-footer { padding: 0 20px 28px; color: var(--text-muted, #a8a8b8); text-align: center; font-size: .85rem; }
@media (max-width:760px) { .pattern-toolbar { align-items:flex-start; flex-direction:column; } .pattern-controls { grid-template-columns:1fr 1fr; } }
@media (max-width:480px) { .pattern-main { width:calc(100% - 24px); padding-top:26px; } .pattern-controls { grid-template-columns:1fr; } .pattern-actions { width:100%; } .pattern-button { flex:1; } }
@media (prefers-reduced-motion:reduce) { .pattern-button { transition:none; } }


/* Seed controls and the local favourite collection. */
.seed-control { grid-column: 1 / -1; }
.seed-control small { color: var(--muted, #a5a6b5); font-size: 0.8em; font-weight: 400; }
.seed-input-row { display: flex; gap: 0.6rem; align-items: center; }
.seed-input-row input { min-width: 0; width: 100%; padding: 0.72rem 0.85rem; color: var(--text, #f4f4f8); background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.16); border-radius: 0.65rem; font: inherit; }
.pattern-favourites { margin-top: 1.5rem; padding: 1.25rem; border: 1px solid rgba(255,255,255,0.1); border-radius: 1rem; background: rgba(255,255,255,0.025); }
.favourites-heading { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.favourites-heading h2 { margin: 0.15rem 0 0; }
.favourites-help, .empty-favourites { color: var(--muted, #a5a6b5); font-size: 0.9rem; }
.favourites-list { display: grid; gap: 0.7rem; }
.favourite-card { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 0.9rem; border-radius: 0.75rem; background: rgba(255,255,255,0.035); border: 1px solid rgba(255,255,255,0.07); }
.favourite-details h3 { margin: 0; font-size: 1rem; }
.favourite-details p { margin: 0.3rem 0; color: var(--muted, #a5a6b5); font-size: 0.82rem; }
.favourite-colours { display: flex; gap: 0.35rem; }
.favourite-colours span { display: inline-block; width: 1rem; height: 1rem; border-radius: 50%; border: 1px solid rgba(255,255,255,0.25); }
.favourite-actions { display: flex; flex-wrap: wrap; gap: 0.45rem; }
.favourite-remove { opacity: 0.8; }
@media (max-width: 600px) { .favourites-heading, .favourite-card { align-items: flex-start; flex-direction: column; } .seed-input-row { align-items: stretch; flex-direction: column; } .seed-input-row .pattern-button { width: 100%; } }


/* Keep the artwork close to the controls; the collection sits below it. */
.pattern-favourites { margin-top: 1.1rem; }
.pattern-workspace { display: flex; flex-direction: column; }
.pattern-toolbar { flex-wrap: wrap; }
.pattern-actions { max-width: 100%; }
#generate-button { position: relative; z-index: 3; }


/* v4.2: let the artwork and its controls share the first screen on desktop. */
.pattern-main { padding-top: 22px; }
.pattern-back { margin-bottom: 18px; }
.pattern-intro { margin-bottom: 20px; }
.pattern-intro h1 { margin: 6px 0 10px; }
.pattern-intro > p:last-child { line-height: 1.55; }
.pattern-workspace { padding: clamp(14px, 2vw, 22px); }
.pattern-toolbar { align-items: center; margin-bottom: 18px; gap: 14px; }
.pattern-toolbar h2 { margin-top: 4px; }
.pattern-actions { gap: 7px; }
.pattern-button { padding: 9px 11px; font-size: .84rem; }
.pattern-stage { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(280px, 1fr); gap: 20px; align-items: start; }
.pattern-canvas-column { min-width: 0; }
.pattern-settings-column { min-width: 0; }
.pattern-controls { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px 12px; margin-bottom: 0; }
.pattern-control { gap: 7px; font-size: .82rem; }
.pattern-control select { min-height: 36px; padding: 7px 8px; font-size: .82rem; }
.pattern-colour-input input[type=color] { width: 38px; height: 34px; }
.pattern-range-control > span { align-items: baseline; }
.seed-control { grid-column: 1 / -1; }
.seed-input-row { gap: 7px; }
.seed-input-row input { padding: 0.6rem 0.7rem; }
.seed-input-row .pattern-button { white-space: nowrap; }
.animation-mode-control { max-width: none; margin: 0; }
.pattern-status { margin-top: 12px; }
.pattern-favourites { margin-top: 1rem; }
#generate-button { position: relative; z-index: 3; }

@media (max-width: 900px) {
  .pattern-toolbar { align-items: flex-start; flex-direction: column; }
  .pattern-stage { grid-template-columns: minmax(0, 1fr); }
  .pattern-settings-column { order: 2; }
  .pattern-canvas-column { order: 1; }
  .pattern-controls { grid-template-columns: repeat(3, minmax(0, 1fr)); margin-top: 16px; }
  .seed-control { grid-column: 1 / -1; }
}
@media (max-width: 600px) {
  .pattern-main { width: calc(100% - 24px); padding-top: 20px; }
  .pattern-controls { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .pattern-actions { width: 100%; }
  .pattern-actions .pattern-button { flex: 1 1 auto; }
}
@media (max-width: 420px) {
  .pattern-controls { grid-template-columns: minmax(0, 1fr); }
  .seed-control { grid-column: auto; }
  .seed-input-row { align-items: stretch; flex-direction: column; }
  .seed-input-row .pattern-button { width: 100%; }
  .favourites-heading, .favourite-card { align-items: flex-start; flex-direction: column; }
}


/* v4.3: make the description optional so the artwork appears sooner. */
.pattern-main { padding-top: 14px; }
.pattern-back { margin-bottom: 12px; }
.pattern-intro { margin-bottom: 14px; }
.pattern-intro h1 { font-size: clamp(2.1rem, 5.5vw, 3.7rem); margin: 4px 0 8px; }
.pattern-description { margin-top: 8px; color: var(--text-muted, #a8a8b8); font-size: .88rem; }
.pattern-description summary { display: inline-flex; align-items: center; gap: 8px; width: fit-content; color: var(--accent-teal, #63f0d0); cursor: pointer; list-style: none; }
.pattern-description summary::-webkit-details-marker { display: none; }
.pattern-description summary::before { content: "+"; display: inline-grid; place-items: center; width: 1.2rem; height: 1.2rem; border: 1px solid currentColor; border-radius: 50%; font-size: .9rem; line-height: 1; }
.pattern-description[open] summary::before { content: "−"; }
.pattern-description summary:focus-visible { outline: 2px solid #63f0d0; outline-offset: 4px; border-radius: 3px; }
.pattern-description p { max-width: 680px; margin: 8px 0 0; line-height: 1.55; }
.pattern-toolbar { margin-bottom: 12px; }
.pattern-workspace { padding: clamp(12px, 1.6vw, 18px); }
@media (max-width: 900px) { .pattern-intro { margin-bottom: 12px; } .pattern-stage { gap: 12px; } }