/* css/demo_page.css — Morphology Lab のデモ解説ページ（draped_dress.html / underground_flood.html …）
   記事部分は common.css の research article スタイル（.article-* / .section-header）をそのまま使い、
   ここではデモの表示枠と、操作表・参考文献・関連デモなどの追加要素だけを定義する。 */

/* --- デモの表示枠 --- */
.demo-stage {
  position: relative;
  height: clamp(420px, 72vh, 760px);
  margin-top: 2rem;
  border-radius: var(--radius);
  overflow: hidden;
  background: #0b0c0e;
  box-shadow: 0 10px 40px rgba(0, 0, 0, .18);
}
.demo-stage iframe {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  border: 0; display: block;
}
.demo-loader {
  position: absolute; inset: 0;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 1rem;
  background: #0b0c0e center / cover no-repeat;
  color: rgba(255, 255, 255, .82);
  font-size: .85rem; letter-spacing: .02em;
  transition: opacity .6s ease, visibility .6s;
  pointer-events: none;
}
.demo-loader::before {            /* サムネイルを暗く敷く */
  content: ""; position: absolute; inset: 0;
  background: rgba(8, 9, 11, .62);
}
.demo-loader > * { position: relative; }
.demo-loader.is-hidden { opacity: 0; visibility: hidden; }
.demo-spinner {
  width: 28px; height: 28px; border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, .25); border-top-color: #fff;
  animation: demo-spin 1s linear infinite;
}
@keyframes demo-spin { to { transform: rotate(360deg); } }

.demo-caption {
  display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: .5rem 1.5rem;
  margin-top: .75rem;
  font-size: .8rem; line-height: 1.7;
  color: var(--c-text-3);
}
.demo-caption a { color: var(--c-accent); text-decoration: none; white-space: nowrap; }
.demo-caption a:hover { text-decoration: underline; }

/* --- 操作表 --- */
.demo-keys {
  width: 100%; max-width: var(--w-narrow);
  border-collapse: collapse;
  font-size: .92rem; line-height: 1.7;
  margin: .5rem 0 1.5rem;
}
.demo-keys th, .demo-keys td {
  text-align: left; vertical-align: top;
  padding: .7rem .75rem;
  border-bottom: 1px solid color-mix(in oklab, var(--c-text) 10%, transparent);
}
.demo-keys th { width: 34%; font-weight: 600; color: var(--c-text); white-space: nowrap; }
.demo-keys td { color: var(--c-text-2); }
.demo-keys tr.demo-keys-group th {
  padding-top: 1.4rem;
  font-size: .72rem; letter-spacing: .12em; text-transform: uppercase;
  color: var(--c-text-3); border-bottom: 0;
}
kbd {
  display: inline-block; min-width: 1.6em;
  padding: .05em .45em; margin: 0 .1em;
  font: 600 .78rem/1.5 ui-monospace, SFMono-Regular, Menlo, monospace; text-align: center;
  color: var(--c-text);
  background: var(--c-surface);
  border: 1px solid color-mix(in oklab, var(--c-text) 18%, transparent);
  border-bottom-width: 2px; border-radius: 5px;
}

/* --- 本文の補助 --- */
.article-body h3 {
  font-size: 1.05rem; font-weight: 700;
  margin: 2rem 0 .75rem;
  color: var(--c-text);
}
.article-body ul.demo-list, .article-body ol.demo-list {
  margin: 0 0 1.25rem 1.25rem;
  color: var(--c-text-2); line-height: 1.9;
}
.article-body .demo-list li { margin-bottom: .4rem; }
.demo-note {
  max-width: var(--w-narrow);
  margin: 1.5rem 0;
  padding: 1rem 1.25rem;
  border-left: 3px solid var(--c-accent);
  background: var(--c-accent-soft);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-size: .9rem; line-height: 1.9; color: var(--c-text-2);
}
.demo-specs {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 1px; max-width: var(--w-narrow);
  margin: 1rem 0 1.5rem;
  background: color-mix(in oklab, var(--c-text) 10%, transparent);
  border: 1px solid color-mix(in oklab, var(--c-text) 10%, transparent);
  border-radius: var(--radius); overflow: hidden;
}
.demo-specs div { background: var(--c-surface); padding: .9rem 1rem; }
.demo-specs dt { font-size: .72rem; letter-spacing: .08em; color: var(--c-text-3); }
.demo-specs dd { margin: .2rem 0 0; font-size: .95rem; font-weight: 600; color: var(--c-text); }

/* --- 参考文献 --- */
.demo-refs {
  max-width: var(--w-narrow);
  margin: .5rem 0 0 1.25rem;
  font-size: .85rem; line-height: 1.8; color: var(--c-text-2);
}
.demo-refs li { margin-bottom: .6rem; }
.demo-refs i { font-style: italic; }

/* --- 関連デモ --- */
.demo-related {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1.25rem; margin-top: 1rem;
}
.demo-related a {
  display: block; text-decoration: none; color: inherit;
  background: var(--c-surface);
  border-radius: var(--radius); overflow: hidden;
  border: 1px solid color-mix(in oklab, var(--c-text) 8%, transparent);
  transition: transform .25s ease, box-shadow .25s ease;
}
.demo-related a:hover { transform: translateY(-3px); box-shadow: 0 8px 24px rgba(0, 0, 0, .12); }
.demo-related img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; display: block; background: #0b0c0e; }
.demo-related span { display: block; padding: .8rem 1rem 1rem; font-size: .9rem; font-weight: 600; line-height: 1.5; }
.demo-related small { display: block; margin-top: .2rem; font-weight: 400; font-size: .78rem; color: var(--c-text-3); }

@media (max-width: 640px) {
  .demo-stage { height: 68vh; min-height: 380px; margin-left: -1.25rem; margin-right: -1.25rem; border-radius: 0; }
  .demo-specs { grid-template-columns: repeat(2, 1fr); }
  .demo-keys th { width: auto; white-space: normal; }
  .demo-keys th, .demo-keys td { display: block; padding: .3rem 0; border: 0; }
  .demo-keys tr { display: block; padding: .6rem 0; border-bottom: 1px solid color-mix(in oklab, var(--c-text) 10%, transparent); }
}