/* mock（現行サイト Twenty Fifteen 準拠） を移植。
   白地・#333の明朝・黒細枠(#444)・角丸6px・アウトラインのピル。装飾なし。 */
:root {
  --m-ink: #333;
  --m-faint: #555;
  --m-soft: #707070;
  --m-border: #444;
  --m-line: #ddd;
  --m-bg: #fff;
  --m-btn: #333;
}

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

html, body {
  margin: 0;
  padding: 0;
  background: var(--m-bg);
  color: var(--m-ink);
  font-family: "Noto Serif JP", "Hiragino Mincho ProN", "Yu Mincho", serif;
  font-size: 15px;
  line-height: 1.85;
  max-width: 100%;
  overflow-x: hidden;
}

main { display: block; }

a { color: var(--m-ink); text-decoration: underline; text-underline-offset: 3px; }
h1 { font-size: 20px; line-height: 1.55; margin: 0 0 10px; font-weight: 700; }
h2 { font-size: 15px; margin: 0 0 6px; font-weight: 700; }
p { margin: 9px 0; }
ul { padding-left: 20px; margin: 8px 0; }

.m-faint { color: var(--m-faint); font-size: 12.5px; }
.m-soft { color: var(--m-soft); font-size: 12px; }

.m-sitebar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px 10px;
  border-bottom: 1px solid var(--m-border);
  position: sticky;
  top: 0;
  background: var(--m-bg);
  z-index: 5;
}
.m-sitebar a.backlink { margin-right: 2px; text-decoration: none; font-size: 16px; }
.site-name { font-size: 14px; font-weight: 700; line-height: 1.3; }

.m-wrap { padding: 20px 18px 44px; max-width: 640px; margin: 0 auto; }

.m-btn {
  display: inline-block;
  border: 1px solid var(--m-btn);
  border-radius: 4px;
  cursor: pointer;
  background: var(--m-btn);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  padding: 11px 20px;
  letter-spacing: .05em;
  font-family: inherit;
  text-align: center;
  text-decoration: none;
}
.m-btn:hover { background: #555; border-color: #555; }
.m-btn:disabled { opacity: .45; cursor: default; }
.m-btn.ghost { background: #fff; color: var(--m-ink); border: 1px solid var(--m-border); font-weight: 400; }
.m-btn.wide { display: block; width: 100%; text-align: center; }

/* ピル */
.pill {
  display: inline-block;
  font-size: 11px;
  line-height: 1;
  padding: 5px 10px;
  border: 1px solid var(--m-ink);
  border-radius: 999px;
  letter-spacing: .03em;
  font-family: "IBM Plex Sans JP", "Hiragino Sans", sans-serif;
  background: none;
  color: var(--m-ink);
}
.pill.soft { border-color: var(--m-line); color: var(--m-soft); }
button.pill { cursor: pointer; }
.pill-row { display: flex; gap: 6px; flex-wrap: wrap; margin: 8px 0 4px; }

/* 一覧カード */
.room-card {
  border: 1px solid var(--m-border);
  border-radius: 6px;
  overflow: hidden;
  background: #fff;
  margin-top: 14px;
  display: flex;
  align-items: stretch;
  text-decoration: none;
  color: var(--m-ink);
}
.room-card:hover .rc-title { text-decoration: underline; text-underline-offset: 3px; }
.rc-photo {
  flex: none;
  width: 92px;
  min-height: 92px;
  background: #f2f2f2;
  border-right: 1px solid var(--m-border);
  position: relative;
  overflow: hidden;
}
.rc-photo img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; display: block; }
.rc-body { padding: 12px 13px; min-width: 0; }
.rc-title { font-size: 15px; font-weight: 700; line-height: 1.45; }
.rc-days { margin-top: 5px; display: flex; gap: 5px; flex-wrap: wrap; }
.rc-days .pill { font-size: 10px; padding: 4px 8px; }

/* 出演者ページ */
.m-hero {
  width: 100%;
  aspect-ratio: 1 / 1;
  background: #f2f2f2;
  border: 1px solid var(--m-border);
  border-radius: 6px;
  overflow: hidden;
  margin-bottom: 16px;
  position: relative;
}
.m-hero.wide { aspect-ratio: 16 / 9; }
.m-hero img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; display: block; }
.credit { font-size: 10px; color: var(--m-soft); margin-top: 6px; font-family: "IBM Plex Sans JP", sans-serif; }

.letters-head { margin-top: 28px; padding-top: 16px; border-top: 1px solid var(--m-border); display: flex; align-items: baseline; gap: 10px; }
.letter { border: 1px solid var(--m-border); border-radius: 6px; background: #fff; padding: 13px 15px 12px; margin-top: 14px; }
.letter .l-meta { display: flex; align-items: baseline; gap: 8px; }
.letter .l-name { font-weight: 700; font-size: 13.5px; }
.letter .l-date { font-size: 11px; color: var(--m-soft); margin-left: auto; font-family: "IBM Plex Sans JP", sans-serif; }
.letter .l-body, .l-body { margin: 6px 0 2px; font-size: 13.5px; white-space: pre-wrap; }
.reply { margin-top: 10px; padding: 10px 13px 8px; border-top: 1px solid var(--m-line); background: #f8f8f8; border-radius: 0 0 4px 4px; }
.reply .r-name { font-weight: 700; font-size: 12.5px; }
.reply .r-body { font-size: 13px; margin: 4px 0 2px; white-space: pre-wrap; }
.closed-note { font-size: 11px; color: var(--m-soft); margin-top: 8px; }
.l-actions { display: flex; gap: 16px; margin-top: 9px; font-size: 12.5px; }
.confirm-row { margin-top: 9px; font-size: 13px; display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.confirm-row button { border: 1px solid var(--m-border); background: #fff; border-radius: 4px; padding: 5px 12px; font-size: 12.5px; cursor: pointer; color: var(--m-ink); font-family: inherit; }
.flash { border: 1px solid var(--m-line); border-radius: 6px; padding: 9px 13px; margin-top: 12px; font-size: 13px; color: var(--m-faint); }

.m-note { border: 1px solid var(--m-line); border-radius: 6px; padding: 11px 14px; font-size: 12.5px; margin: 12px 0 18px; color: var(--m-faint); }
.m-note ul { margin: 2px 0 0; padding-left: 18px; }
.f-group { margin-bottom: 18px; }
.f-label { display: block; font-weight: 700; font-size: 13.5px; margin-bottom: 4px; }
.f-help { font-size: 12px; color: var(--m-faint); margin-bottom: 6px; }
input[type="text"], textarea {
  width: 100%;
  border: 1px solid var(--m-border);
  border-radius: 4px;
  background: #fff;
  padding: 10px 12px;
  font-family: inherit;
  font-size: 15px;
  color: var(--m-ink);
}
textarea { min-height: 150px; resize: vertical; line-height: 1.8; }
.f-error { color: #9c2f2f; font-size: 12.5px; margin-top: 4px; font-weight: 700; }
.dest { border: 1px solid var(--m-border); border-radius: 6px; background: #fff; margin-bottom: 8px; }
.dest label { display: flex; gap: 10px; padding: 11px 13px; cursor: pointer; align-items: flex-start; }
.dest input { margin-top: 5px; }
.dest .d-text p { margin: 0; }
.dest.on { background: #f2f2f2; }

.done-mark { font-size: 26px; text-align: center; margin: 26px 0 8px; }
.secret-box {
  border: 1px dashed var(--m-border);
  border-radius: 4px;
  background: #fff;
  padding: 12px 14px;
  margin: 14px 0;
  word-break: break-all;
  font-family: ui-monospace, Menlo, monospace;
  font-size: 12px;
}

.badge { font-size: 10px; border-radius: 99px; padding: 2px 9px; letter-spacing: .04em; font-family: "IBM Plex Sans JP", sans-serif; }
.badge.pub { border: 1px solid var(--m-ink); color: var(--m-ink); }
.badge.priv { background: var(--m-ink); color: #fff; border: 1px solid var(--m-ink); }
.badge.replied { background: #eee; color: var(--m-soft); border: 1px solid #eee; }
.badge.unreplied { border: 1px solid var(--m-line); color: var(--m-soft); }
.l-badges { display: flex; gap: 6px; margin-bottom: 5px; }

.m-empty { text-align: center; padding: 32px 10px; color: var(--m-faint); font-size: 13.5px; }
.m-center { text-align: center; padding: 48px 22px; }

footer {
  margin-top: 40px;
  padding: 14px 18px 30px;
  border-top: 1px solid var(--m-line);
  font-size: 11.5px;
  color: var(--m-faint);
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}
footer p { margin: 4px 0; }
footer a { color: var(--m-faint); }

/* 記録ダイアログ（<dialog>） */
dialog[data-testid="records"] {
  border: none;
  padding: 0;
  border-radius: 6px;
  width: min(92vw, 420px);
  max-height: 85vh;
  color: var(--m-ink);
}
dialog[data-testid="records"]::backdrop { background: rgba(0, 0, 0, .55); }
.rec-modal {
  background: #fff;
  border: 1px solid var(--m-border);
  border-radius: 6px;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.rec-head { display: flex; align-items: center; justify-content: space-between; padding: 12px 14px; border-bottom: 1px solid var(--m-line); }
.rec-head h2 { font-size: 15px; margin: 0; }
.rec-close {
  width: 30px;
  height: 30px;
  border: 1px solid var(--m-border);
  border-radius: 50%;
  background: #fff;
  color: var(--m-ink);
  font-size: 17px;
  line-height: 1;
  cursor: pointer;
  display: grid;
  place-items: center;
  padding: 0;
}
.rec-grid { overflow-y: auto; padding: 14px; display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.rec-tile {
  aspect-ratio: 4 / 3;
  background: #f2f2f2;
  border: 1px solid var(--m-line);
  border-radius: 4px;
  overflow: hidden;
  position: relative;
}
.rec-tile img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }

/* PC幅: 出演者一覧をグリッドに（公式サイトの出演者カードと同形） */
.m-wrap--intro { padding-bottom: 8px; max-width: 1120px; }
@media (min-width: 640px) {
  /* 見出し・本文はグリッドと左端を揃え、行長だけ読みやすくキャップする */
  .m-wrap--intro p,
  .m-wrap--intro ul { max-width: 40em; }
}
.room-wrap { max-width: 640px; margin: 0 auto; padding: 0 18px 44px; }
@media (min-width: 640px) {
  .room-wrap { max-width: 1120px; }
  .room-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
    margin-top: 14px;
    align-items: start;
  }
  .room-grid .room-card { display: block; margin-top: 0; }
  .room-grid .rc-photo {
    width: 100%;
    aspect-ratio: 1 / 1;
    border-right: none;
    border-bottom: 1px solid var(--m-border);
  }
  .room-grid .rc-body { padding: 13px; }
  .m-hero { max-width: 360px; }
  .m-hero.wide { max-width: 100%; }
}
@media (min-width: 900px) {
  .room-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
}

@media (max-width: 480px) {
  .m-wrap { padding: 16px 14px 36px; }
  .room-wrap { padding: 0 14px 36px; }
  .rc-photo { width: 76px; min-width: 76px; }
}

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