/* =========================================================
   Kangaroo Island — product page (extends styles.css)
   ========================================================= */

/* ---------- hero ---------- */
.k-hero {
  position: relative; min-height: 100svh; display: flex; align-items: flex-end;
  padding: 140px 0 80px; overflow: hidden; isolation: isolate; background: #000;
}
.k-hero-media { position: absolute; inset: 0; z-index: -1; }
.k-hero-bg {
  width: 100%; height: 100%; object-fit: cover; object-position: 50% 45%;
  transform: scale(1.08); animation: k-drift 18s ease-in-out infinite alternate;
}
.k-hero-media::after {
  content: ""; position: absolute; inset: 0;
  background:
    linear-gradient(0deg, var(--bg) 2%, rgba(6,16,36,.55) 40%, rgba(6,16,36,0) 70%),
    radial-gradient(60% 45% at 50% 55%, rgba(70,140,255,.14), transparent 70%);
}
@keyframes k-drift { to { transform: scale(1.16) translateY(-1.5%); } }
.k-title {
  margin: 0; font-weight: 600; line-height: .9; letter-spacing: .06em;
  font-size: clamp(3.2rem, 11vw, 9.5rem); font-family: "Space Grotesk", sans-serif;
}
.k-title span {
  background: linear-gradient(100deg, #fff 0%, var(--steel) 40%, var(--laser-2) 75%, var(--laser) 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.k-lead { max-width: 580px; font-size: clamp(1.1rem, 1.8vw, 1.4rem); color: #d5e0ef; margin: 26px 0 30px; }
.k-chips { list-style: none; padding: 0; margin: 0 0 34px; display: flex; flex-wrap: wrap; gap: 10px; }
.k-chips li {
  display: flex; align-items: baseline; gap: 8px; padding: 10px 16px; border-radius: 12px;
  border: 1px solid var(--line-2); background: rgba(6,16,36,.55); backdrop-filter: blur(8px);
}
.k-chips strong { font-size: 1.35rem; font-weight: 600; color: var(--laser-2); }
.k-chips span { color: var(--muted); font-size: .9rem; }
.play { font-size: .8em; color: var(--laser-2); }

/* ---------- fold viewer ---------- */
.fold-viewer { position: relative; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line-2); aspect-ratio: 16 / 9; background: #cfd8de; }
.fold-img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: opacity .9s var(--ease), transform 1.2s var(--ease); }
.fold-viewer[data-state="open"] .fold-closed { opacity: 0; transform: scale(1.03); }
.fold-viewer[data-state="closed"] .fold-open { opacity: 0; transform: scale(.98); }
.fold-switch {
  position: absolute; left: 50%; bottom: 18px; transform: translateX(-50%);
  display: flex; padding: 4px; border-radius: 999px; background: rgba(6,16,36,.8); backdrop-filter: blur(8px); border: 1px solid var(--line-2);
}
.fold-switch button {
  min-width: 96px; height: 40px; border: 0; border-radius: 999px; background: transparent; color: var(--muted);
  font-family: var(--mono); font-size: .8rem; letter-spacing: .14em; text-transform: uppercase; cursor: pointer; transition: all .25s;
}
.fold-switch button[aria-pressed="true"] { background: var(--laser); color: #0a0a0a; }

/* ---------- modules ---------- */
.module-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.module { display: flex; flex-direction: column; }
.module-img { aspect-ratio: 4 / 3; overflow: hidden; background: #cdd6dd; }
.module-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 1s var(--ease); }
.module:hover .module-img img { transform: scale(1.05); }
.module-body { padding: 20px 22px 24px; }
.module-body h3 { margin: 8px 0 12px; font-size: 1.22rem; font-weight: 600; }
.ticks { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; color: var(--muted); font-size: .94rem; }
.ticks li { padding-left: 18px; position: relative; }
.ticks li::before { content: ""; position: absolute; left: 0; top: .62em; width: 8px; height: 2px; background: var(--laser); }

/* ---------- sequence viewer ---------- */
.seq-tabs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 22px; }
.seq-tabs button { padding: 10px 16px; border-radius: 999px; border: 1px solid var(--line-2); background: transparent; color: var(--muted); font-family: var(--mono); font-size: .78rem; letter-spacing: .06em; cursor: pointer; transition: all .25s; }
.seq-tabs button[aria-selected="true"] { background: var(--text); color: #000; border-color: var(--text); }
.seq { display: grid; grid-template-columns: 1.6fr 1fr; gap: 28px; align-items: center; }
.seq-stage { position: relative; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line-2); aspect-ratio: 16 / 10; background: #cdd6dd; }
.seq-img { width: 100%; height: 100%; object-fit: cover; transition: opacity .35s; }
.seq-img.fading { opacity: 0; }
.seq-count { position: absolute; left: 14px; top: 14px; padding: 6px 10px; border-radius: 8px; background: rgba(6,16,36,.75); font-size: .72rem; letter-spacing: .16em; }
.seq-title { font-size: 1.7rem; margin: 0 0 10px; font-weight: 600; letter-spacing: -.01em; }
.seq-text { color: var(--muted); margin: 0 0 22px; min-height: 4.8em; }
.seq-dots { display: flex; gap: 8px; margin-bottom: 22px; }
.seq-dots button { width: 34px; height: 6px; border-radius: 3px; border: 0; background: var(--line-2); cursor: pointer; padding: 0; }
.seq-dots button[aria-current="step"] { background: var(--laser); box-shadow: 0 0 10px var(--laser); }
.seq-nav { display: flex; gap: 10px; }

/* ---------- film ---------- */
.film { border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line-2); background: #000; aspect-ratio: 16 / 9; }
.film video { width: 100%; height: 100%; display: block; background: #000; }

/* ---------- materials ---------- */
.mat-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0; border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.mat { padding: 28px 26px 30px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.mat h3 { margin: 12px 0 8px; font-size: 1.2rem; font-weight: 600; }
.mat p { margin: 0; color: var(--muted); font-size: .95rem; }
.mat .code { color: var(--laser-2); }

/* ---------- builder ---------- */
.builder { display: grid; grid-template-columns: 1.5fr 1fr; gap: 22px; align-items: start; }
.builder-steps { display: grid; gap: 16px; }
.step-box { margin: 0; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px 22px 24px; background: rgba(13,33,66,.4); }
.step-box legend { padding: 0 8px; font-weight: 600; font-size: 1.05rem; }
.step-box legend .mono { display: inline-grid; place-items: center; width: 26px; height: 26px; border-radius: 50%; background: var(--laser); color: #000; font-size: .78rem; margin-right: 4px; }
.opt-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; margin-top: 6px; }
.opt { position: relative; display: grid; gap: 8px; cursor: pointer; font-size: .9rem; }
.opt input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.opt img { aspect-ratio: 4 / 3; width: 100%; object-fit: cover; border-radius: 10px; border: 2px solid var(--line-2); opacity: .45; filter: grayscale(.6); transition: all .25s; }
.opt input:checked + img { opacity: 1; filter: none; border-color: var(--laser); box-shadow: 0 0 0 3px rgba(255,90,31,.2); }
.opt input:focus-visible + img { outline: 2px solid var(--laser); outline-offset: 3px; }
.opt::after { content: "✓"; position: absolute; right: 8px; top: 8px; width: 24px; height: 24px; border-radius: 50%; display: grid; place-items: center; font-size: .8rem; background: var(--laser); color: #000; opacity: 0; transform: scale(.6); transition: all .25s; }
.opt:has(input:checked)::after { opacity: 1; transform: none; }
.pill-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 6px; }
.pill-opt { display: inline-flex; align-items: center; gap: 10px; min-height: 44px; padding: 8px 16px 8px 10px; border-radius: 999px; border: 1px solid var(--line-2); cursor: pointer; font-size: .92rem; transition: all .2s; }
.pill-opt input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.pill-opt:has(input:checked) { border-color: var(--laser); background: rgba(255,90,31,.1); }
.pill-opt:has(input:focus-visible) { outline: 2px solid var(--laser); outline-offset: 2px; }
.pill-opt:not(:has(.sw)) { padding-left: 16px; }
.sw { width: 26px; height: 26px; border-radius: 50%; border: 1px solid rgba(255,255,255,.3); flex: none; }
.sw-concrete { background: linear-gradient(135deg, #d9dfe2, #aeb8bd 60%, #c9d0d4); }
.sw-other { background: conic-gradient(#ff5a1f, #e8b04a, #46e0ff, #3d5a86, #ff5a1f); }
.ral-input { margin-top: 12px; width: 220px; padding: 12px 14px; border-radius: 10px; border: 1px solid var(--line-2); background: rgba(3,10,24,.55); color: var(--text); font: inherit; }
.summary { position: sticky; top: 96px; padding: 24px; display: grid; gap: 14px; }
.sum-preview { border-radius: 10px; overflow: hidden; aspect-ratio: 16 / 9; background: #cdd6dd; }
.sum-preview img { width: 100%; height: 100%; object-fit: cover; transition: opacity .3s; }
.sum-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; font-size: .92rem; }
.sum-list li { display: flex; justify-content: space-between; gap: 12px; padding-bottom: 6px; border-bottom: 1px dashed var(--line-2); }
.sum-list li span:first-child { color: var(--muted); }
.sum-list li span:last-child { text-align: right; }

/* ---------- social ---------- */
.social-box { display: grid; grid-template-columns: 1.4fr 1fr; gap: 30px; align-items: center; padding: clamp(28px, 5vw, 56px); }
.social-box p:not(.eyebrow) { color: var(--muted); margin: 0; }
.social-actions { display: grid; gap: 12px; justify-items: start; }
.btn-fb { background: #1877f2; border-color: #1877f2; color: #fff; font-weight: 600; }
.btn-fb:hover { background: #3b8cff; border-color: #3b8cff; }
.btn-fb svg { width: 20px; height: 20px; }

/* ---------- maker ---------- */
.maker { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(30px, 5vw, 70px); align-items: center; }
.maker p:not(.eyebrow) { color: #b9c9df; }
.maker-img { border-radius: var(--radius); border: 1px solid var(--line-2); width: 100%; }

/* ---------- responsive ---------- */
@media (max-width: 1080px) {
  .module-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .builder { grid-template-columns: 1fr; }
  .summary { position: static; }
}
@media (max-width: 860px) {
  .seq, .social-box, .maker { grid-template-columns: 1fr; }
  .mat-grid { grid-template-columns: 1fr 1fr; }
  .opt-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 560px) {
  .module-grid, .mat-grid { grid-template-columns: 1fr; }
  .k-hero { padding-bottom: 50px; }
  .k-chips li { padding: 8px 12px; }
  .fold-viewer { aspect-ratio: 4 / 3; }
  .fold-switch button { min-width: 84px; }
  .seq-nav .btn { flex: 1; }
}
@media (prefers-reduced-motion: reduce) { .k-hero-bg { animation: none; transform: none; } }