:root {
  --bg: #f8f4ec;
  --bg-card: #fffdf8;
  --text: #2e2a24;
  --text-muted: #7a7266;
  --accent: #b5583f;
  --line: #d8cdb9;
  --tag-bg: #eee6d6;
  --tag-text: #5c5340;
  --serif: "Noto Serif TC", "Noto Serif", serif;
  --sans: "Noto Sans TC", "Noto Sans", -apple-system, sans-serif;
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-weight: 300;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

/* ---- Masthead ---- */
.masthead {
  text-align: center;
  padding: 4rem 1.5rem 2.5rem;
  border-bottom: 1px solid var(--line);
  margin-bottom: 2rem;
}
.eyebrow {
  font-size: 0.75rem;
  letter-spacing: 0.25em;
  color: var(--text-muted);
  text-transform: uppercase;
  margin: 0 0 1rem;
}
.masthead h1 {
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  margin: 0 0 0.75rem;
  letter-spacing: 0.04em;
}
.subtitle {
  font-family: var(--serif);
  font-style: italic;
  color: var(--text-muted);
  margin: 0;
  font-size: 1.05rem;
}

/* ---- Controls ---- */
.controls {
  max-width: 1080px;
  margin: 0 auto 3rem;
  padding: 0 1.5rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem 1.5rem;
}
#search {
  font-family: var(--sans);
  font-size: 0.95rem;
  padding: 0.55rem 0.2rem;
  border: none;
  border-bottom: 1px solid var(--line);
  background: transparent;
  color: var(--text);
  min-width: 220px;
  flex: 1 1 220px;
}
#search:focus { outline: none; border-bottom-color: var(--accent); }

.toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  color: var(--text-muted);
  cursor: pointer;
  white-space: nowrap;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  width: 100%;
}
.chip {
  font-family: var(--sans);
  font-size: 0.8rem;
  padding: 0.35rem 0.9rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.15s ease;
}
.chip:hover { border-color: var(--accent); color: var(--accent); }
.chip.active { background: var(--accent); border-color: var(--accent); color: #fff; }

/* ---- Grid & cards ---- */
.grid {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 1.5rem 4rem;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(310px, 100%), 1fr));
  gap: 2rem;
  align-items: start;
}

.card {
  position: relative;
  background: var(--bg-card);
  border-top: 3px solid var(--line);
  padding: 1.75rem 1.5rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}
.card.is-recommended { border-top-color: var(--accent); }

.badge {
  position: absolute;
  top: -0.65rem;
  right: 1.25rem;
  background: var(--accent);
  color: #fff;
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  padding: 0.25rem 0.65rem;
}

.card h2 {
  font-family: var(--serif);
  font-size: 1.35rem;
  font-weight: 500;
  margin: 0.25rem 0 0.75rem;
}

.tags { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-bottom: 0.9rem; }
.tag {
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  background: var(--tag-bg);
  color: var(--tag-text);
  padding: 0.2rem 0.6rem;
}

.synopsis, .ost {
  font-size: 0.9rem;
  margin: 0 0 0.6rem;
}
.cast {
  color: var(--text-muted);
  font-style: italic;
  font-size: 0.9rem;
  margin: 0 0 0.6rem;
}
.cast p { margin: 0 0 0.2rem; }
.cast p:last-child { margin-bottom: 0; }
.synopsis { color: var(--text); }
.ost { color: var(--text-muted); font-size: 0.82rem; }

/* ---- Review (click to expand) ---- */
.review {
  margin: 0 0 0.6rem;
  font-size: 0.9rem;
}
.review summary {
  color: var(--accent);
  cursor: pointer;
  list-style: none;
  user-select: none;
}
.review summary::-webkit-details-marker { display: none; }
.review summary::after {
  content: "▾";
  display: inline-block;
  margin-left: 0.4rem;
  transition: transform 0.15s ease;
}
.review[open] summary::after { transform: rotate(-180deg); }
.review summary:hover { text-decoration: underline; }
.review p {
  color: var(--accent);
  margin: 0.5rem 0 0;
}

/* ---- OST player ---- */
.ost-player { margin: 0.6rem 0 0; }
.ost-play {
  font-family: var(--sans);
  font-size: 0.8rem;
  padding: 0.4rem 0.9rem;
  border: 1px solid var(--accent);
  border-radius: 999px;
  background: transparent;
  color: var(--accent);
  cursor: pointer;
  transition: all 0.15s ease;
}
.ost-play:hover { background: var(--accent); color: #fff; }
.ost-player iframe {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  border: none;
}

.empty {
  text-align: center;
  color: var(--text-muted);
  font-family: var(--serif);
  font-style: italic;
  padding: 3rem 0;
  grid-column: 1 / -1;
}

/* ---- Footer ---- */
footer {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.8rem;
  padding: 2rem 0 3rem;
  border-top: 1px solid var(--line);
}

/* ---- Back to top ---- */
.back-to-top {
  position: fixed;
  right: 1.25rem;
  bottom: calc(1.25rem + env(safe-area-inset-bottom, 0px));
  width: 2.75rem;
  height: 2.75rem;
  border: none;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  font-size: 1.2rem;
  line-height: 1;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.18);
  opacity: 0;
  visibility: hidden;
  transform: translateY(0.5rem);
  transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s;
}
.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.back-to-top:hover { filter: brightness(1.08); }

/* ---- Small screens ---- */
@media (max-width: 480px) {
  .masthead { padding: 2.75rem 1.25rem 2rem; }
  .controls { gap: 0.85rem 1rem; margin-bottom: 2rem; }
  #search { min-width: 0; flex-basis: 100%; }
  .grid { gap: 1.25rem; padding: 0 1.25rem 3rem; }
  .card { padding: 1.5rem 1.25rem; }
  .back-to-top {
    right: 1rem;
    bottom: calc(1rem + env(safe-area-inset-bottom, 0px));
    width: 2.5rem;
    height: 2.5rem;
  }
}