:root {
  --bg-deep: oklch(8% 0.025 258);
  --bg-card: oklch(17% 0.035 258);
  --fg: oklch(97% 0.008 80);
  --muted: oklch(72% 0.015 80);
  --dim: oklch(54% 0.02 80);
  --gold: oklch(83% 0.09 92);
  --gold-d: oklch(63% 0.09 80);
  --gold-grad: linear-gradient(170deg, oklch(89% 0.07 95) 0%, oklch(78% 0.1 88) 45%, oklch(62% 0.1 78) 100%);
  --red: oklch(60% 0.22 28);
  --hairline: oklch(55% 0.04 250 / 0.22);
  --surface: oklch(17% 0.035 258);
  --surface-row: oklch(14% 0.03 258 / 0.7);
  --surface-input: oklch(14% 0.03 258 / 0.8);
  /* エリア色 */
  --c-north: oklch(70% 0.14 145);
  --c-east: oklch(72% 0.15 230);
  --c-west: oklch(70% 0.18 30);
  --font-en: "Cinzel", "Inter", serif;
  --font-serif: "Shippori Mincho B1", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --font-display: "Inter", "Helvetica Neue", system-ui, sans-serif;
  --font-jp: "Zen Kaku Gothic New", "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic", "Noto Sans JP", sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  background:
    conic-gradient(from 200deg at 25% -8%, transparent 0deg, oklch(75% 0.09 85 / 0.16) 8deg, transparent 17deg),
    conic-gradient(from 152deg at 75% -8%, transparent 0deg, oklch(75% 0.09 85 / 0.16) 8deg, transparent 17deg),
    conic-gradient(from 174deg at 50% -12%, transparent 0deg, oklch(80% 0.08 88 / 0.22) 7deg, transparent 15deg),
    radial-gradient(130% 55% at 50% 0%, oklch(19% 0.05 260) 0%, transparent 60%),
    linear-gradient(180deg, var(--bg-deep) 0%, oklch(6% 0.02 250) 70%, oklch(5% 0.018 250) 100%);
  background-color: var(--bg-deep);
  color: var(--fg);
  font-family: var(--font-jp);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100dvh;
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 200;
  opacity: 0.035;
  background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="180" height="180"><filter id="n"><feTurbulence type="fractalNoise" baseFrequency="0.9" numOctaves="2"/></filter><rect width="100%25" height="100%25" filter="url(%23n)"/></svg>');
  background-size: 180px 180px;
}

.sample-banner {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--red);
  color: #fff;
  text-align: center;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 6px 12px;
}

/* ============ Hero ============ */
.hero { text-align: center; padding: 52px 20px 24px; position: relative; }
.hero .back { position: absolute; left: 16px; top: 16px; color: var(--gold-d); text-decoration: none; font-family: var(--font-en); font-size: 13px; font-weight: 700; letter-spacing: 0.08em; }
.hero .back i { font-style: normal; margin-right: 2px; }
.hero .back:hover { color: var(--gold); }
.hero-logo { width: min(240px, 56vw); height: auto; display: block; margin: 0 auto 16px; }
.hero-round {
  font-family: var(--font-en);
  font-size: clamp(11px, 3vw, 15px);
  font-weight: 700;
  letter-spacing: 0.3em;
  color: var(--gold);
  text-transform: uppercase;
}
.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(32px, 8.5vw, 52px);
  font-weight: 800;
  letter-spacing: 0.16em;
  margin: 8px 0 16px;
}
.hero-title-en {
  font-family: var(--font-en);
  font-weight: 700;
  letter-spacing: 0.14em;
  background: var(--gold-grad);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-title::after {
  content: "";
  display: block;
  width: 60px;
  height: 1px;
  margin: 18px auto 0;
  background: var(--gold-grad);
}
.hero-lead { font-size: clamp(13px, 3.4vw, 15px); color: var(--muted); max-width: 520px; margin: 0 auto; }

/* ============ Toolbar ============ */
.toolbar {
  position: sticky;
  top: 0;
  z-index: 90;
  max-width: 1000px;
  margin: 0 auto;
  padding: 12px 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: oklch(8% 0.025 258 / 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--hairline);
}
.sample-banner:not([hidden]) ~ .toolbar { top: 30px; }

.tb-bar { display: flex; gap: 8px; align-items: stretch; }

.tb-search {
  flex: 1;
  min-width: 0;
  appearance: none;
  background: var(--surface-input);
  border: 1px solid var(--hairline);
  border-radius: 10px;
  color: var(--fg);
  font-family: var(--font-jp);
  font-size: 14px;
  padding: 11px 14px;
  outline: none;
}
.tb-search:focus { border-color: var(--gold-d); }
.tb-search::placeholder { color: var(--dim); }

.tb-toggle {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  appearance: none;
  background: var(--surface-input);
  border: 1px solid var(--hairline);
  border-radius: 10px;
  color: var(--gold-d);
  font-family: var(--font-jp);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  padding: 0 13px;
  cursor: pointer;
  transition: border-color 0.15s ease, color 0.15s ease;
}
.tb-toggle:hover { color: var(--fg); border-color: var(--gold-d); }
.tb-toggle.has-active { color: var(--gold); border-color: oklch(63% 0.09 80 / 0.5); }
.tb-toggle:focus-visible { outline: 2px solid var(--gold); outline-offset: 2px; }
.tb-toggle-count {
  font-family: var(--font-display);
  font-size: 10.5px;
  font-weight: 700;
  min-width: 17px;
  height: 17px;
  border-radius: 999px;
  background: var(--gold-grad);
  color: oklch(20% 0.04 80);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.tb-toggle-count[hidden] { display: none; }
.tb-toggle-arrow { font-size: 14px; line-height: 1; transition: transform 0.18s ease; }
.tb-toggle.open .tb-toggle-arrow { transform: rotate(180deg); }

.tb-filters { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.tb-filters.collapsed { display: none; }
.tb-group { display: flex; flex-wrap: wrap; gap: 6px; }

.f-chip {
  appearance: none;
  background: transparent;
  border: 1px solid var(--hairline);
  border-radius: 999px;
  color: var(--muted);
  font-family: var(--font-jp);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.03em;
  padding: 6px 13px;
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
}
.f-chip:hover { color: var(--fg); border-color: var(--gold-d); }
.f-chip:active { transform: scale(0.97); }
.f-chip.active { background: var(--gold-grad); border-color: var(--gold); color: oklch(20% 0.04 80); }
.f-chip:focus-visible { outline: 2px solid var(--gold); outline-offset: 2px; }
.f-chip[data-area="north"].active { background: var(--c-north); border-color: var(--c-north); color: oklch(18% 0.04 145); }
.f-chip[data-area="east"].active { background: var(--c-east); border-color: var(--c-east); color: oklch(18% 0.04 230); }
.f-chip[data-area="west"].active { background: var(--c-west); border-color: var(--c-west); color: oklch(18% 0.04 30); }

.tb-sort { margin-left: auto; }
.tb-sort select {
  appearance: none;
  background: var(--surface-input);
  border: 1px solid var(--hairline);
  border-radius: 8px;
  color: var(--fg);
  font-family: var(--font-jp);
  font-size: 12px;
  padding: 6px 28px 6px 10px;
  cursor: pointer;
  outline: none;
  background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="10" height="6" fill="none" stroke="%23b9a05a" stroke-width="1.6"><path d="M1 1l4 4 4-4"/></svg>');
  background-repeat: no-repeat;
  background-position: right 10px center;
}
.tb-reset {
  appearance: none;
  background: transparent;
  border: none;
  color: var(--gold-d);
  font-family: var(--font-jp);
  font-size: 12px;
  cursor: pointer;
  padding: 6px 4px;
  text-decoration: underline;
}
.tb-reset:hover { color: var(--gold); }

.result-count {
  max-width: 1000px;
  margin: 14px auto 0;
  padding: 0 18px;
  font-size: 12px;
  color: var(--dim);
  letter-spacing: 0.04em;
}

/* ============ Grid ============ */
.band-grid {
  max-width: 1000px;
  margin: 10px auto 0;
  padding: 0 14px 80px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 10px;
}
.grid-empty { text-align: center; color: var(--muted); font-size: 14px; padding: 40px 20px 80px; }

.dir-card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: 14px;
  overflow: hidden;
  cursor: pointer;
  transition: border-color 0.18s ease, transform 0.18s ease;
}
.dir-card[hidden] { display: none; }
.dir-card:hover { border-color: oklch(85% 0.15 88 / 0.45); transform: translateY(-2px); }
.dir-card:focus-visible { outline: 2px solid var(--gold); outline-offset: 2px; }
.dir-card[data-area="north"] { --accent: var(--c-north); }
.dir-card[data-area="east"] { --accent: var(--c-east); }
.dir-card[data-area="west"] { --accent: var(--c-west); }

.card-photo {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  display: block;
  background: oklch(24% 0.04 258);
}
.card-photo.placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 28px;
  color: var(--gold-d);
}
.card-play {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 30px;
  height: 22px;
  border-radius: 6px;
  background: oklch(58% 0.21 28);
  display: flex;
  align-items: center;
  justify-content: center;
}
.card-play svg { width: 22px; height: 22px; fill: #fff; }

.area-tag {
  position: absolute;
  top: 10px;
  left: 10px;
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: oklch(16% 0.03 258);
  background: var(--accent, var(--gold));
  border-radius: 5px;
  padding: 3px 8px;
}

.card-body { padding: 12px 14px 14px; }
.card-name {
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 800;
  line-height: 1.3;
  overflow-wrap: anywhere;
}
.card-affil { font-size: 11.5px; color: var(--muted); margin-top: 2px; }
.card-affil .univ { color: var(--gold-d); font-weight: 700; margin-right: 0.4em; }

.card-grades { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 8px; }
.g-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-family: var(--font-display);
  font-size: 10.5px;
  font-weight: 600;
  color: var(--fg);
  background: oklch(20% 0.03 258);
  border: 1px solid var(--hairline);
  border-radius: 6px;
  padding: 3px 8px 3px 6px;
}
.g-dot { width: 6px; height: 6px; border-radius: 50%; flex-shrink: 0; background: var(--gold); }
.g-badge[data-key="1"] .g-dot { background: oklch(82% 0.14 95); }
.g-badge[data-key="2"] .g-dot { background: oklch(70% 0.14 145); }
.g-badge[data-key="3"] .g-dot { background: oklch(72% 0.15 230); }
.g-badge[data-key="4"] .g-dot { background: oklch(70% 0.18 30); }
.g-badge[data-key="5+"] .g-dot { background: oklch(66% 0.16 300); }
.g-badge[data-key="社会人"] .g-dot { background: oklch(62% 0.02 80); }

.card-meta { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; align-items: center; }
.dept-tag {
  font-size: 10px;
  font-weight: 700;
  color: var(--gold);
  border: 1px solid oklch(63% 0.09 80 / 0.4);
  border-radius: 999px;
  padding: 2px 8px;
}
.card-x {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 7px;
  color: var(--gold);
  transition: background 0.15s ease;
}
.card-x:hover { background: oklch(63% 0.09 80 / 0.16); }
.card-x svg { width: 14px; height: 14px; fill: currentColor; }

/* ============ モーダルプレイヤー ============ */
#player-modal { position: fixed; inset: 0; z-index: 300; display: flex; align-items: center; justify-content: center; padding: 18px; }
#player-modal[hidden] { display: none; }
.player-backdrop { position: absolute; inset: 0; background: oklch(4% 0.015 255 / 0.82); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); }
.player-dialog { position: relative; width: min(720px, 100%); }
.player-frame { aspect-ratio: 16 / 9; border-radius: 14px; overflow: hidden; background: #000; border: 1px solid oklch(63% 0.09 80 / 0.5); box-shadow: 0 24px 80px oklch(0% 0 0 / 0.6); }
.player-frame iframe { width: 100%; height: 100%; border: 0; display: block; }
.player-caption { text-align: center; margin-top: 12px; font-size: 13.5px; font-weight: 700; letter-spacing: 0.06em; }
.player-close { position: absolute; top: -42px; right: 0; appearance: none; background: transparent; border: 1px solid oklch(63% 0.09 80 / 0.5); border-radius: 50%; width: 34px; height: 34px; color: var(--gold); font-size: 14px; cursor: pointer; transition: all 0.18s ease; }
.player-close:hover { background: var(--gold-grad); color: oklch(20% 0.04 80); }
.player-close:focus-visible { outline: 2px solid var(--gold); outline-offset: 2px; }

/* ============ Footer ============ */
.footer { text-align: center; padding: 30px 16px 44px; border-top: 1px solid var(--hairline); color: var(--dim); font-size: 12px; letter-spacing: 0.08em; }
.footer-sub { font-size: 10.5px; margin-top: 2px; }

@media (prefers-reduced-motion: no-preference) {
  .dir-card { animation: rise 0.4s ease both; }
  @keyframes rise { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
  #player-modal:not([hidden]) .player-dialog { animation: pop 0.25s ease both; }
  @keyframes pop { from { opacity: 0; transform: scale(0.96); } to { opacity: 1; transform: none; } }
}

.footer-link { margin-top: 8px; }
.footer-link a { color: var(--gold-d); text-decoration: none; font-size: 11.5px; letter-spacing: 0.04em; border-bottom: 1px solid transparent; }
.footer-link a:hover { color: var(--gold); border-bottom-color: var(--gold-d); }


/* トップへ戻る フローティングボタン */
#to-top { position: fixed; right: 16px; bottom: 18px; z-index: 120; width: 46px; height: 46px; border-radius: 50%; border: 1px solid oklch(63% 0.09 80 / 0.5); background: oklch(12% 0.03 258 / 0.92); color: var(--gold); font-size: 15px; cursor: pointer; opacity: 0; transform: translateY(12px); pointer-events: none; transition: opacity 0.2s ease, transform 0.2s ease; backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px); }
#to-top.show { opacity: 1; transform: none; pointer-events: auto; }
#to-top:hover { background: var(--gold-grad); color: oklch(20% 0.04 80); }
#to-top:active { transform: scale(0.94); }
#to-top:focus-visible { outline: 2px solid var(--gold); outline-offset: 2px; }