/* Hallmark · genre: modern-minimal(dark product showcase) · macrostructure: Marquee Hero(product stage) · theme: custom dark (user-directed: Apple製品ページ参照) · enrichment: interactive-3D-matching-viewer (Three.js — user-manipulable, wallpaper-mapped, detail-view presets) · nav: localbar(sticky pill) · footer: Ft2 inline
 * tone: premium-quiet · audience: ケース購入前に手持ち待ち受けとの相性をディテールまで確かめたい消費者 · use: 待ち受けアップ→ケース試着→ディテール確認→注文
 * Hallmark · pre-emit critique: P4 H5 E4 S4 R4 V5 · contrast: pass (40–41) · slop: pass (42–45) · mobile: pass (34, 49, 50–57)
 * DNA-source: user-supplied reference screenshots (structure only — dark stage, centered product 3D, left detail chips, sticky product bar)
 */
@import url("tokens.css");

*, *::before, *::after { box-sizing: border-box; }
html { overflow-x: clip; scroll-behavior: smooth; }
body {
  margin: 0;
  overflow-x: clip;
  background: var(--color-paper);
  color: var(--color-ink-2);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

h1, h2, h3 {
  font-family: var(--font-display);
  font-style: normal;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.14;
  color: var(--color-ink);
  overflow-wrap: anywhere;
  min-width: 0;
  margin: 0;
}
p { margin: 0; }
a { color: var(--color-ink); text-decoration: none; }
a:focus-visible, button:focus-visible, [tabindex]:focus-visible, input:focus-visible, select:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
  border-radius: 8px;
}
img { max-width: 100%; }

.visually-hidden {
  position: absolute; width: 1px; height: 1px;
  clip-path: inset(50%); overflow: hidden; white-space: nowrap;
}
[hidden] { display: none !important; }

/* ---------- shell ---------- */
.section {
  max-width: var(--shell-text);
  margin-inline: auto;
  padding: var(--space-2xl) var(--page-gutter);
}

/* ---------- local product bar (sticky pill) ---------- */
.localbar-wrap {
  position: sticky; top: 0;
  z-index: var(--z-sticky-nav);
  padding: var(--space-sm) var(--page-gutter);
  background: linear-gradient(oklch(12% 0.010 260 / 0.92), oklch(12% 0.010 260 / 0));
  pointer-events: none;
}
.localbar {
  pointer-events: auto;
  max-width: var(--shell-text);
  margin-inline: auto;
  display: flex; align-items: center; gap: var(--space-md);
  background: oklch(21% 0.014 260 / 0.82);
  backdrop-filter: blur(14px);
  border: 1px solid var(--color-rule);
  border-radius: var(--radius-pill);
  padding: 0.5rem 0.6rem 0.5rem 1.25rem;
}
.localbar__name {
  font-weight: 700; color: var(--color-ink);
  white-space: nowrap;
}
.localbar__actions { margin-left: auto; display: flex; gap: var(--space-xs); align-items: center; }

/* ---------- buttons (flat premium pills) ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5em;
  min-height: 44px;
  padding: 0.55rem 1.3rem;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  line-height: 1.3;
  white-space: nowrap;
  border: 1px solid var(--color-rule);
  border-radius: var(--radius-pill);
  color: var(--color-ink);
  background: var(--color-panel-2);
  cursor: pointer;
  transition: background-color var(--dur-micro) var(--ease-out), transform var(--dur-micro) var(--ease-out);
}
.btn:hover { background: var(--color-panel-3); }
.btn:active { transform: scale(0.98); }
.btn[disabled] { opacity: 0.55; cursor: not-allowed; pointer-events: none; }
.btn--primary {
  background: var(--color-accent);
  border-color: transparent;
  color: var(--color-accent-ink);
}
.btn--primary:hover { background: var(--color-accent-hover); }
.btn--sm { min-height: 38px; padding: 0.35rem 1.0rem; }
.btn--lg { min-height: 50px; padding: 0.7rem 1.7rem; font-size: var(--text-base); }

/* ---------- showcase ---------- */
.showcase {
  max-width: var(--shell);
  margin-inline: auto;
  padding: var(--space-lg) var(--page-gutter) var(--space-2xl);
}
.showcase__head { max-width: var(--shell-text); margin-inline: auto; padding-block: var(--space-lg) var(--space-xl); }
.showcase__title {
  font-size: var(--text-display);
  font-weight: 800;
  letter-spacing: -0.03em;
}
.showcase__lede {
  margin-top: var(--space-md);
  max-width: 40em;
  color: var(--color-ink-3);
  font-size: var(--text-md);
  line-height: 1.6;
}

/* the stage — a giant dark rounded panel, product centered */
.stage {
  position: relative;
  background:
    radial-gradient(90% 70% at 50% 30%, oklch(22% 0.015 260 / 0.9), transparent 70%),
    var(--color-panel);
  border: 1px solid var(--color-rule);
  border-radius: var(--radius-stage);
  overflow: hidden;
}
.stage__view {
  position: relative;
  height: min(78dvh, 56rem);
  min-height: 30rem;
}
.stage__view canvas {
  position: absolute; inset: 0;
  display: block; width: 100%; height: 100%;
  touch-action: none;
  cursor: grab;
}
.stage__view canvas:active { cursor: grabbing; }
.stage__hint {
  position: absolute; bottom: var(--space-md); left: 50%;
  translate: -50% 0;
  font-size: var(--text-sm);
  color: var(--color-ink-3);
  pointer-events: none;
  white-space: nowrap;
}
.stage__casename {
  position: absolute; top: var(--space-lg); left: 50%;
  translate: -50% 0;
  font-size: var(--text-sm);
  color: var(--color-ink-3);
  pointer-events: none;
  white-space: nowrap;
}
.stage__casename b { color: var(--color-ink); font-weight: 700; }
.stage__fallback {
  position: absolute; inset: 0;
  display: grid; place-content: center; gap: var(--space-sm);
  text-align: center; padding: var(--space-xl);
}

/* detail chips (left column, Apple-style) */
.stage__ui {
  position: absolute;
  left: clamp(0.75rem, 2.5vw, 2.5rem);
  top: 50%;
  translate: 0 -50%;
  display: grid;
  gap: var(--space-xs);
  z-index: var(--z-raised);
  width: min(21rem, 44vw);
}
.dchip {
  justify-self: start;
  display: inline-flex; align-items: center; gap: 0.6em;
  min-height: 44px;
  padding: 0.5rem 1.15rem;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  white-space: nowrap;
  color: var(--color-ink);
  background: oklch(24% 0.014 260 / 0.85);
  backdrop-filter: blur(10px);
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: background-color var(--dur-micro) var(--ease-out), transform var(--dur-micro) var(--ease-out);
}
.dchip:hover { background: var(--color-panel-3); }
.dchip:active { transform: scale(0.98); }
.dchip[aria-pressed="true"], .dchip[aria-expanded="true"] { border-color: var(--color-ink-3); }
.dchip__plus {
  display: inline-grid; place-content: center;
  width: 1.35em; height: 1.35em;
  border: 1.5px solid var(--color-ink-3);
  border-radius: 50%;
  font-weight: 600; font-size: 0.9em; line-height: 1;
  color: var(--color-ink-2);
}
.dchip__swatch {
  width: 1.15em; height: 1.15em; border-radius: 50%;
  background: var(--swatch, var(--color-panel-3));
  border: 1px solid var(--color-rule);
}

/* expanding detail panel */
.dpanel {
  position: relative;
  background: oklch(24% 0.014 260 / 0.92);
  backdrop-filter: blur(14px);
  border: 1px solid var(--color-rule);
  border-radius: var(--radius-card);
  padding: var(--space-lg);
  display: grid; gap: var(--space-md);
  animation: dpanel-in var(--dur-short) var(--ease-out);
}
@keyframes dpanel-in {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: none; }
}
.dpanel__label { font-size: var(--text-sm); color: var(--color-ink-2); line-height: 1.55; }
.dpanel__label b { color: var(--color-ink); }
.dpanel__close {
  position: absolute; top: 0.6rem; right: 0.6rem;
  width: 32px; height: 32px;
  display: grid; place-content: center;
  border: 0; border-radius: 50%;
  background: var(--color-panel-3);
  color: var(--color-ink);
  font-size: 1rem; line-height: 1;
  cursor: pointer;
}
.dpanel__close:hover { background: oklch(32% 0.016 260); }

/* case swatch dots */
.swatches { display: flex; flex-wrap: wrap; gap: var(--space-xs); }
.swatch {
  width: 34px; height: 34px;
  border-radius: 50%;
  border: 2px solid transparent;
  padding: 2px;
  background: transparent;
  cursor: pointer;
}
.swatch > span {
  display: block; width: 100%; height: 100%;
  border-radius: 50%;
  background: var(--swatch);
  border: 1px solid var(--color-rule);
}
.swatch[aria-pressed="true"] { border-color: var(--color-focus); }
.swatch:hover > span { filter: brightness(1.15); }

/* wallpaper sample chips */
.samples { display: flex; gap: var(--space-xs); align-items: center; flex-wrap: wrap; }
.chip {
  width: 44px; height: 44px;
  border-radius: 12px;
  border: 2px solid var(--color-rule);
  padding: 0; cursor: pointer;
  background-size: cover; background-position: center;
  transition: border-color var(--dur-micro), transform var(--dur-micro) var(--ease-out);
}
.chip:hover { transform: translateY(-2px); }
.chip[aria-pressed="true"] { border-color: var(--color-focus); }

/* model pills inside panel */
.pill-row { display: flex; flex-wrap: wrap; gap: var(--space-xs); }
.pill {
  min-height: 40px;
  padding: 0.4rem 1rem;
  font-family: var(--font-body); font-size: var(--text-sm); font-weight: 600;
  white-space: nowrap;
  color: var(--color-ink);
  background: var(--color-panel-2);
  border: 1px solid var(--color-rule);
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: background-color var(--dur-micro), border-color var(--dur-micro);
}
.pill:hover { background: var(--color-panel-3); }
.pill[aria-pressed="true"] { border-color: var(--color-focus); background: var(--color-accent-soft); }
.pill[disabled] { opacity: 0.55; cursor: not-allowed; pointer-events: none; }

/* mobile: chips drop below the stage view */
@media (max-width: 56rem) {
  .stage__view { height: min(62dvh, 34rem); min-height: 22rem; }
  .stage__ui {
    position: static;
    translate: none;
    width: auto;
    padding: var(--space-md);
  }
  .dchip { backdrop-filter: none; background: var(--color-panel-2); }
  .dpanel { backdrop-filter: none; background: var(--color-panel-2); }
}

/* ---------- catalog ---------- */
.section--catalog { max-width: var(--shell); }
.section--catalog h2, .section h2 { font-size: var(--text-2xl); letter-spacing: -0.02em; }
.catalog-lede { margin-top: var(--space-sm); max-width: 36em; color: var(--color-ink-3); }
.catalog {
  margin-top: var(--space-xl);
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: var(--space-md);
}
.case-card {
  display: grid; justify-items: center; gap: var(--space-2xs);
  padding: var(--space-lg) var(--space-sm);
  font-family: var(--font-body);
  background: var(--color-panel);
  border: 1px solid var(--color-rule);
  border-radius: var(--radius-card);
  cursor: pointer;
  transition: background-color var(--dur-short) var(--ease-out), transform var(--dur-short) var(--ease-out), border-color var(--dur-micro);
}
@media (hover: hover) {
  .case-card:hover { background: var(--color-panel-2); transform: translateY(-3px); }
}
.case-card:active { transform: translateY(0); }
.case-card[aria-pressed="true"] { border-color: var(--color-focus); }
.case-card img { border-radius: 10px; }
.case-card__name { margin-top: var(--space-xs); font-weight: 700; font-size: var(--text-sm); color: var(--color-ink); }
.case-card__price { font-size: var(--text-sm); color: var(--color-ink-3); font-variant-numeric: tabular-nums; }
.catalog-note { margin-top: var(--space-lg); font-size: var(--text-sm); color: var(--color-ink-3); }

/* ---------- steps ---------- */
.steps {
  list-style: none; padding: 0;
  margin: var(--space-xl) 0 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-md);
}
.steps li {
  background: var(--color-panel);
  border: 1px solid var(--color-rule);
  border-radius: var(--radius-card);
  padding: var(--space-lg);
}
.steps .stage-num {
  font-size: var(--text-xl);
  font-weight: 800;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  color: var(--color-ink-3);
}
.steps h3 { margin-top: var(--space-xs); font-size: var(--text-md); }
.steps p { margin-top: var(--space-xs); font-size: var(--text-sm); color: var(--color-ink-2); }
@media (max-width: 48rem) {
  .steps { grid-template-columns: minmax(0, 1fr); }
}

/* ---------- order ---------- */
.order-head p { margin-top: var(--space-sm); max-width: 38em; color: var(--color-ink-3); }
.order-grid {
  margin-top: var(--space-xl);
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: var(--space-lg);
  align-items: start;
}
.order-preview {
  background: var(--color-panel);
  border: 1px solid var(--color-rule);
  border-radius: var(--radius-card);
  padding: var(--space-lg);
  display: grid; gap: var(--space-sm);
}
.order-preview img {
  width: 100%; border-radius: 14px;
  background: var(--color-panel-2);
  aspect-ratio: 4 / 3.4; object-fit: cover;
}
.order-preview dl { margin: 0; display: grid; gap: var(--space-2xs); font-size: var(--text-sm); }
.order-preview .row { display: flex; justify-content: space-between; gap: var(--space-sm); }
.order-preview dt { color: var(--color-ink-3); }
.order-preview dd { margin: 0; font-weight: 600; color: var(--color-ink); }

.order-form {
  background: var(--color-panel);
  border: 1px solid var(--color-rule);
  border-radius: var(--radius-card);
  padding: var(--space-xl);
  display: grid; gap: var(--space-lg);
}
.field { display: grid; gap: 0.3rem; }
.field label { font-weight: 600; font-size: var(--text-sm); color: var(--color-ink); }
.field .input {
  height: 48px;
  padding: 0 0.9rem;
  font: inherit;
  color: var(--color-ink);
  background: var(--color-panel-2);
  border: 1px solid var(--color-rule);
  border-radius: var(--radius-input);
  outline: 2px solid transparent;
  outline-offset: 1px;
  transition: background-color var(--dur-micro);
}
.field .input:hover { background: var(--color-panel-3); }
.field .input:focus-visible { outline: 2px solid var(--color-focus); }
.field .input[aria-invalid="true"] { border-color: var(--color-error); }
.field .input[disabled] { opacity: 0.55; cursor: not-allowed; }
.field select.input { appearance: auto; }
.field .help {
  min-height: 1lh;
  font-size: var(--text-sm);
  color: var(--color-ink-3);
}
.field .help.is-error { color: var(--color-error); }
.form-row { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1fr); gap: var(--space-md); }
.qty-row { display: flex; align-items: center; gap: var(--space-sm); }
.qty-row .input { width: 6em; text-align: center; }
.order-form .demo-note { font-size: var(--text-sm); color: var(--color-ink-3); }
.order-form .submit-row { display: flex; align-items: center; gap: var(--space-md); flex-wrap: wrap; }

.order-done {
  background: var(--color-panel);
  border: 1px solid var(--color-mint-deep);
  border-radius: var(--radius-card);
  padding: var(--space-xl);
  display: grid; gap: var(--space-sm);
}
.order-done h3 { font-size: var(--text-lg); }
.order-done .order-no {
  font-variant-numeric: tabular-nums;
  color: var(--color-mint-deep);
  font-weight: 600;
}

@media (max-width: 56rem) {
  .form-row { grid-template-columns: minmax(0, 1fr); }
  .order-grid { grid-template-columns: minmax(0, 1fr); }
}

/* ---------- faq ---------- */
.section--faq { max-width: 46rem; }
.section--faq h2 { font-size: var(--text-xl); }
.faq { margin-top: var(--space-lg); display: grid; gap: var(--space-sm); }
.faq details {
  background: var(--color-panel);
  border: 1px solid var(--color-rule);
  border-radius: 16px;
  padding: var(--space-md) var(--space-lg);
}
.faq summary {
  cursor: pointer;
  font-weight: 700;
  color: var(--color-ink);
  list-style: none;
  display: flex; justify-content: space-between; gap: var(--space-sm); align-items: baseline;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-weight: 600; color: var(--color-ink-3); }
.faq details[open] summary::after { content: "−"; }
.faq details p { margin-top: var(--space-sm); font-size: var(--text-sm); color: var(--color-ink-2); }

/* ---------- footer (Ft2 inline) ---------- */
.foot {
  max-width: var(--shell-text);
  margin-inline: auto;
  padding: var(--space-xl) var(--page-gutter) var(--space-2xl);
  border-top: 1px solid var(--color-rule);
  display: flex; justify-content: space-between; gap: var(--space-md); flex-wrap: wrap;
  font-size: var(--text-sm); color: var(--color-ink-3);
}

/* ---------- star-burst (success moment) ---------- */
.star-burst {
  position: fixed;
  width: 26px; height: 26px;
  z-index: var(--z-toast);
  background:
    linear-gradient(90deg, transparent 46%, var(--color-focus) 46% 54%, transparent 54%),
    linear-gradient(0deg,  transparent 46%, var(--color-focus) 46% 54%, transparent 54%);
  animation: star-burst 420ms ease-out forwards;
  pointer-events: none;
}
@keyframes star-burst {
  0%   { transform: scale(0) rotate(0deg);    opacity: 1; }
  60%  { transform: scale(1.2) rotate(35deg); opacity: 0.9; }
  100% { transform: scale(1.5) rotate(45deg); opacity: 0; }
}

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 150ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 150ms !important;
  }
  .star-burst { display: none; }
}