/* ===== テーマ。見る人の多くが女性なので、黒は使わずポップで明るい配色にする ===== */
:root {
  --bg: #fff6f9;
  --dot: #ffd9e6;
  --surface: #ffffff;
  --surface-2: #fdeef3;
  --line: #f6d5e0;
  --ink: #45294a;
  --muted: #8f7291;
  --accent: #ff4f8b;
  --accent-ink: #ffffff;
  --accent-soft: #ffe3ee;
  --accent-deep: #d62f6c;
  --body: #fbe7ee;
  --muscle: #f3cfdb;
  --shadow: 0 2px 0 rgb(214 47 108 / 0.08), 0 10px 28px rgb(214 47 108 / 0.1);
  --pop: 0 3px 0 var(--line);
  --hero-bg: linear-gradient(135deg, #fff0f6 0%, #f3ecff 50%, #e6fbf5 100%);
  --marker: #ffe36e;

  --font-display: 'Fredoka', 'M PLUS Rounded 1c', sans-serif;
  --font-round: 'M PLUS Rounded 1c', 'Noto Sans JP', sans-serif;
  --font-body: 'Inter', 'M PLUS Rounded 1c', 'Noto Sans JP', system-ui, sans-serif;
  --gutter: clamp(16px, 4vw, 48px);
  --radius: 20px;
  color-scheme: light;
}
/* ダークは切り替えボタンを押したときだけ（端末の設定では切り替えない）。黒ではなく濃い紫 */
:root[data-theme='dark'] {
  --bg: #2a1d3a;
  --dot: #34254a;
  --surface: #36274b;
  --surface-2: #42315a;
  --line: #54406f;
  --ink: #fbeefe;
  --muted: #c8b2d4;
  --accent: #ff6b9e;
  --accent-ink: #2a1d3a;
  --accent-soft: #5a2f58;
  --accent-deep: #ffb3cf;
  --body: #463560;
  --muscle: #6a5388;
  --shadow: none;
  --pop: 0 3px 0 #1f1530;
  --hero-bg: linear-gradient(135deg, #42284f 0%, #33295a 50%, #23384a 100%);
  --marker: #8a6a1f;
  color-scheme: dark;
}

/* 部位ごとの色（ボタン・人体図・タグ・選んでいるときのアクセント） */
[data-part='face'] { --pc: #ff7eb3; }
[data-part='chest'] { --pc: #ff8a5c; }
[data-part='back'] { --pc: #4cb8ff; }
[data-part='shoulders'] { --pc: #ffc53d; }
[data-part='arms'] { --pc: #2ec4a0; }
[data-part='abs'] { --pc: #a58bff; }
[data-part='legs'] { --pc: #7fd35a; }
[data-part='glutes'] { --pc: #e657a8; }
[data-part='fullbody'] { --pc: #ffa94d; }
[data-part='all'] { --pc: var(--accent); }

*,
*::before,
*::after { box-sizing: border-box; }

body {
  margin: 0;
  /* 水玉の背景 */
  background: radial-gradient(var(--dot) 1.6px, transparent 1.8px) 0 0 / 22px 22px, var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; }
button, select, input { font: inherit; color: inherit; }
button { cursor: pointer; }
a { color: inherit; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* ===== ヘッダー ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px var(--gutter);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-bottom: 2px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; min-width: 0; }
.brand-mark {
  flex: none;
  width: 34px;
  height: 34px;
  border-radius: 12px;
  transform: rotate(-8deg);
  box-shadow: 0 3px 0 var(--accent-deep);
  background: var(--accent) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 32 32'%3E%3Cpath fill='%23fff' d='M6 13h3v-3h3v12H9v-3H6zm20 0h-3v-3h-3v12h3v-3h3zM12 14.5h8v3h-8z'/%3E%3C/svg%3E") center / 100% no-repeat;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.15; min-width: 0; }
.brand-title { font-family: var(--font-display); font-weight: 700; font-size: 1.45rem; letter-spacing: 0.02em; color: var(--accent); }
.brand-sub { font-family: var(--font-round); font-weight: 700; font-size: 0.72rem; color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.header-right { display: flex; align-items: center; gap: 12px; }
.header-stats { margin: 0; font-size: 0.8rem; color: var(--muted); text-align: right; }
.header-stats strong { color: var(--ink); font-weight: 700; }
.icon-btn {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 2px solid var(--line);
  background: var(--surface);
  box-shadow: var(--pop);
  color: var(--accent);
}
.icon-btn:hover { border-color: var(--accent); }

main { padding: 0 var(--gutter) 64px; max-width: 1440px; margin: 0 auto; }

/* ===== 表示切り替え ===== */
.view-tabs { display: flex; gap: 6px; margin: 16px 0 14px; overflow-x: auto; scrollbar-width: none; }
.view-tabs::-webkit-scrollbar { display: none; }
.view-tab {
  flex: none;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border: 2px solid var(--line);
  border-radius: 99px;
  background: var(--surface);
  box-shadow: var(--pop);
  color: var(--muted);
  font-family: var(--font-round);
  font-weight: 800;
}
.view-tab:hover { color: var(--ink); border-color: var(--accent); }
.view-tab[aria-selected='true'] { color: var(--accent-ink); background: var(--accent); border-color: var(--accent); box-shadow: 0 3px 0 var(--accent-deep); }
.view-tab[aria-selected='true'] .view-tab-count { background: rgb(255 255 255 / 0.3); color: inherit; }
.view-tab-count { font-size: 0.72rem; font-weight: 600; padding: 1px 7px; border-radius: 99px; background: var(--surface-2); color: var(--muted); }

/* ===== 人体図と部位 ===== */
.hero {
  display: grid;
  grid-template-columns: minmax(240px, 380px) 1fr;
  gap: clamp(16px, 3vw, 40px);
  align-items: center;
  padding: clamp(16px, 2.5vw, 28px);
  border-radius: var(--radius);
  background: var(--hero-bg);
  border: 2px solid var(--line);
  box-shadow: var(--shadow);
}
.bodymap { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.bodymap-figure { margin: 0; text-align: center; }
.bodymap-figure svg { width: 100%; height: auto; max-height: 340px; overflow: visible; }
.bodymap-figure figcaption { font-size: 0.72rem; color: var(--muted); letter-spacing: 0.1em; }
.bodymap .body { fill: var(--body); }
.bodymap .muscle { fill: var(--muscle); cursor: pointer; transition: fill 0.15s; stroke: var(--surface); stroke-width: 1.2; }
/* なぞったとき・選んだときは部位の色に */
.bodymap .muscle.is-hover { fill: color-mix(in srgb, var(--pc) 55%, var(--muscle)); }
.bodymap .muscle.is-selected { fill: var(--pc); }
.bodymap .abs-lines { fill: none; stroke: var(--surface); stroke-width: 1.2; pointer-events: none; }

.hero-side { display: flex; flex-direction: column; gap: 18px; min-width: 0; }
.hero-kicker { display: inline-block; align-self: flex-start; margin: 0; padding: 2px 12px; border-radius: 99px; background: var(--pc, var(--accent)); color: #3a2140; font-family: var(--font-display); font-size: 0.8rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; transform: rotate(-2deg); }
.hero-title { margin: 2px 0 8px; display: flex; flex-direction: column; line-height: 1.05; }
.hero-en { align-self: flex-start; font-family: var(--font-display); font-weight: 700; font-size: clamp(2.4rem, 5.5vw, 4rem); letter-spacing: 0.01em; color: color-mix(in srgb, var(--pc, var(--accent)) 78%, var(--ink)); text-shadow: 3px 3px 0 var(--surface); }
.hero-ja { align-self: flex-start; font-family: var(--font-round); font-size: clamp(1.05rem, 2vw, 1.3rem); font-weight: 800; margin-top: 6px; padding: 0 4px; background: linear-gradient(transparent 60%, var(--marker) 60%); }
.hero-desc { margin: 0; color: var(--muted); font-size: 0.92rem; max-width: 60ch; }
.muscles { display: flex; flex-wrap: wrap; gap: 6px; margin: 0 0 8px; padding: 0; list-style: none; }
.muscles li { font-size: 0.78rem; font-weight: 700; padding: 2px 10px; border-radius: 99px; background: var(--surface); border: 2px solid var(--pc, var(--accent)); color: var(--ink); }

.part-list { display: flex; flex-wrap: wrap; gap: 12px 20px; }
.part-group-label { margin: 0 0 4px; font-family: var(--font-round); font-size: 0.72rem; font-weight: 800; letter-spacing: 0.1em; color: var(--muted); }
.part-group-btns { display: flex; flex-wrap: wrap; gap: 6px; }
.part-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px 7px 10px;
  border-radius: 99px;
  border: 2px solid var(--line);
  background: var(--surface);
  box-shadow: var(--pop);
  font-family: var(--font-round);
  font-weight: 800;
  font-size: 0.95rem;
  transition: transform 0.12s, box-shadow 0.12s;
}
/* 部位の色の丸 */
.part-btn::before { content: ''; width: 12px; height: 12px; border-radius: 50%; background: var(--pc); }
.part-btn:hover:not(:disabled) { border-color: var(--pc); transform: translateY(-2px); }
.part-btn:active:not(:disabled) { transform: translateY(1px); box-shadow: none; }
.part-btn[aria-pressed='true'] { background: var(--pc); border-color: var(--pc); color: #3a2140; box-shadow: 0 3px 0 color-mix(in srgb, var(--pc) 70%, #000); }
.part-btn[aria-pressed='true']::before { background: #fff; box-shadow: 0 0 0 2px rgb(58 33 64 / 0.25); }
.part-btn:disabled { opacity: 0.4; cursor: default; }
.part-btn .count { font-size: 0.72rem; font-weight: 600; opacity: 0.7; }

/* ===== 横スクロール ===== */
.scroller { position: relative; }
.scroller > nav { overflow-x: auto; scrollbar-width: none; }
.scroller > nav::-webkit-scrollbar { display: none; }
.scroll-btn {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 44px;
  border: 0;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.15s;
}
.scroll-prev { left: 0; background: linear-gradient(90deg, var(--bg) 40%, transparent); }
.scroll-next { right: 0; background: linear-gradient(270deg, var(--bg) 40%, transparent); }
.scroll-btn::before { content: ''; display: block; width: 9px; height: 9px; margin: auto; border: solid var(--ink); border-width: 0 2px 2px 0; }
.scroll-prev::before { transform: rotate(135deg); }
.scroll-next::before { transform: rotate(-45deg); }
.scroller.can-prev .scroll-prev,
.scroller.can-next .scroll-next { opacity: 1; pointer-events: auto; }

/* ===== チャンネル ===== */
.channel-row { margin-top: 16px; }
.row-label { margin: 0 0 6px; font-size: 0.75rem; font-weight: 700; color: var(--muted); }
.channel-chips { display: flex; gap: 6px; padding-bottom: 2px; }
.channel-chips .chip { flex: none; }

/* ===== 種類（器具） ===== */
.equip-tabs { display: flex; gap: 8px; margin: 16px 0 4px; padding-bottom: 2px; }
.equip-tab {
  flex: 1 0 150px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
  padding: 10px 16px;
  border-radius: 16px;
  border: 2px solid var(--line);
  background: var(--surface);
  box-shadow: var(--pop);
  text-align: left;
  transition: transform 0.12s;
}
.equip-tab:hover:not(:disabled) { border-color: var(--accent); transform: translateY(-2px); }
.equip-tab[aria-selected='true'] { border-color: var(--accent); background: var(--accent-soft); box-shadow: 0 3px 0 var(--accent); }
.equip-tab:disabled { opacity: 0.4; cursor: default; }
.equip-name { font-family: var(--font-round); font-weight: 800; font-size: 1.02rem; }
.equip-sub { font-size: 0.72rem; color: var(--muted); white-space: nowrap; }

/* ===== 絞り込み ===== */
.toolbar { display: flex; flex-direction: column; gap: 10px; margin: 14px 0 8px; }
.toolbar-row { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: 99px;
  border: 2px solid var(--line);
  background: var(--surface);
  font-size: 0.85rem;
  font-weight: 700;
}
.chip:hover { border-color: var(--accent); }
.chip[aria-pressed='true'] { background: var(--marker); border-color: var(--marker); color: #45294a; }
.chip-count { font-size: 0.72rem; opacity: 0.65; }
.segmented { display: inline-flex; border: 2px solid var(--line); border-radius: 99px; background: var(--surface); padding: 2px; overflow-x: auto; max-width: 100%; }
.segmented button { flex: none; border: 0; background: none; padding: 4px 12px; border-radius: 99px; font-size: 0.82rem; font-weight: 600; color: var(--muted); }
.segmented button[aria-pressed='true'] { background: var(--accent); color: var(--accent-ink); }
.segmented-sm button { font-size: 0.75rem; padding: 3px 10px; }
.select select {
  appearance: none;
  border: 2px solid var(--line);
  border-radius: 99px;
  background: var(--surface) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' fill='none' stroke='%23888' stroke-width='1.5'/%3E%3C/svg%3E") right 12px center / 10px no-repeat;
  padding: 5px 32px 5px 14px;
  font-size: 0.82rem;
  font-weight: 600;
}
.search {
  flex: 1 1 220px;
  min-width: 0;
  padding: 6px 14px;
  border-radius: 99px;
  border: 2px solid var(--line);
  background: var(--surface);
  font-size: 0.88rem;
}
.search:focus { border-color: var(--accent); outline: none; }

.result-row { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 8px; margin: 10px 0 12px; }
.result-count { margin: 0; font-size: 0.88rem; color: var(--muted); }
.result-count strong { color: var(--ink); font-size: 1.1rem; }

/* ===== 動画カード ===== */
.video-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 18px 16px; }
.video-card {
  display: flex;
  flex-direction: column;
  padding: 0;
  border: 0;
  background: none;
  text-align: left;
  min-width: 0;
}
.thumb { position: relative; aspect-ratio: 16 / 9; border-radius: 16px; overflow: hidden; background: var(--surface-2); border: 3px solid var(--surface); box-shadow: var(--shadow); transition: transform 0.2s; }
.video-card:hover .thumb { transform: translateY(-3px) rotate(-0.6deg); }
.thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.25s; }
.video-card:hover .thumb img { transform: scale(1.04); }
.badge {
  display: inline-block;
  padding: 1px 6px;
  border-radius: 99px;
  background: rgb(69 41 74 / 0.8);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  line-height: 1.5;
}
.badge-duration { position: absolute; right: 6px; bottom: 6px; }
.thumb-badges { position: absolute; left: 6px; top: 6px; display: flex; gap: 4px; }
.badge-short { background: var(--accent); }
.card-body { padding: 10px 2px 0; min-width: 0; }
.card-title {
  margin: 0;
  font-size: 0.92rem;
  font-weight: 700;
  line-height: 1.45;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.video-card:hover .card-title { color: var(--accent); }
.card-meta { display: flex; flex-wrap: wrap; gap: 0 10px; margin: 4px 0 0; font-size: 0.78rem; color: var(--muted); }
.card-channel { font-weight: 600; max-width: 100%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.card-tags { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 6px; }
.tag { font-size: 0.7rem; font-weight: 700; padding: 1px 8px; border-radius: 99px; background: var(--surface-2); color: var(--muted); }
.tag-part { background: color-mix(in srgb, var(--pc) 22%, var(--surface)); color: var(--ink); }
.tag-equip { background: transparent; box-shadow: inset 0 0 0 1px var(--line); }
.empty { grid-column: 1 / -1; padding: 48px 0; text-align: center; color: var(--muted); }
.more-row { display: flex; justify-content: center; margin-top: 28px; }

/* ===== ボタン ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 18px;
  border-radius: 99px;
  border: 2px solid var(--accent);
  background: var(--accent);
  color: var(--accent-ink);
  box-shadow: 0 3px 0 var(--accent-deep);
  font-family: var(--font-round);
  font-weight: 800;
  font-size: 0.88rem;
  text-decoration: none;
}
.btn-ghost { background: var(--surface); border-color: var(--accent); color: var(--accent); box-shadow: 0 3px 0 var(--accent-soft); }
.btn-ghost:hover { background: var(--accent-soft); }

/* ===== フッター ===== */
.site-footer { padding: 24px var(--gutter) 40px; border-top: 2px dashed var(--line); background: var(--bg); font-size: 0.78rem; color: var(--muted); }
.site-footer p { margin: 4px 0; max-width: 1440px; margin-inline: auto; }

/* ===== プレイヤー ===== */
.player {
  width: min(960px, 94vw);
  max-height: 94vh;
  padding: 0;
  border: 0;
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--ink);
  overflow: auto;
}
.player::backdrop { background: rgb(69 41 74 / 0.7); }
.player-frame { aspect-ratio: 16 / 9; background: #000; }
.player-frame iframe { width: 100%; height: 100%; border: 0; display: block; }
.player.is-short { width: min(420px, 94vw); }
.player.is-short .player-frame { aspect-ratio: 9 / 16; max-height: 72vh; margin: 0 auto; }
.player.is-stuck .player-frame { max-height: 40vh; }
.player-info { display: flex; flex-direction: column; gap: 12px; padding: 14px 18px 18px; }
.player-info h2 { margin: 0; font-size: 1rem; line-height: 1.45; }
.player-info p { margin: 2px 0 0; font-size: 0.82rem; color: var(--muted); }
.player-actions { display: flex; gap: 8px; justify-content: flex-end; flex-wrap: wrap; }
.player-stuck { padding: 12px; border-radius: 8px; background: var(--accent-soft); }
.player-stuck p { color: var(--ink); margin: 0 0 8px; }
.player-stuck-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; font-size: 0.82rem; }
.dialog-shim[open] { position: fixed; inset: 0; margin: auto; z-index: 100; height: fit-content; box-shadow: 0 0 0 100vmax rgb(69 41 74 / 0.7); }
.dialog-shim:not([open]) { display: none; }

/* ===== スマホ ===== */
@media (max-width: 760px) {
  .header-stats { display: none; }
  .hero { grid-template-columns: minmax(0, 1fr); padding: 16px; }
  .bodymap { max-width: 300px; margin: 0 auto; width: 100%; }
  .bodymap-figure svg { max-height: 240px; }
  /* スマホでは部位のグループ見出しを省き、ボタンを 1 つの流れで並べる */
  .part-list { gap: 6px; }
  .part-group, .part-group-btns { display: contents; }
  .part-group-label { display: none; }
  .equip-tab { flex: 0 0 auto; }
  .video-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px 10px; }
  .card-title { font-size: 0.84rem; }
  .card-tags { display: none; }
  .search { flex-basis: 100%; }
}
@media (max-width: 380px) {
  .video-grid { grid-template-columns: minmax(0, 1fr); }
  .card-tags { display: flex; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}