/* ── 夢幻底圖卡面 ──────────────────────────────────────────── */

.photo-face {
  position: relative;
  aspect-ratio: 1 / 1;
  width: 100%;
  border-radius: var(--radius-card);
  overflow: hidden;
  container-type: inline-size;
  /* 底圖載入前/缺圖時的漸層替身 */
  background: linear-gradient(160deg, oklch(82% 0.06 300), oklch(62% 0.09 290));
  box-shadow: var(--shadow-card-soft);
}

.photo-face__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* 壓底遮罩：上下漸層＋中央柔和暗帶，確保白字可讀 */
.photo-face__scrim {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(to bottom, rgb(22 14 32 / 0.16), transparent 26%),
    linear-gradient(to top, rgb(22 14 32 / 0.26), transparent 30%),
    radial-gradient(92% 44% at 50% 53%, rgb(28 18 40 / 0.34), transparent 100%);
}

.photo-face__content {
  position: absolute;
  inset: 7%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: #fff;
}

.photo-face__num {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  font-family: "Deck Sans", "Noto Sans TC", sans-serif;
  font-weight: 300;
  font-size: 4cqi;
  letter-spacing: 0.24em;
  text-indent: 0.24em;
  color: rgb(255 255 255 / 0.8);
  text-shadow: 0 1px 8px rgb(20 12 30 / 0.5);
}

.photo-face__title {
  font-family: "Deck Sans", "Noto Sans TC", sans-serif;
  font-weight: 700;
  font-size: 8.2cqi;
  line-height: 1.55;
  letter-spacing: 0.08em;
  text-shadow:
    0 2px 20px rgb(12 6 22 / 0.55),
    0 1px 3px rgb(12 6 22 / 0.42);
}

.photo-face__title.len-m { font-size: 6.6cqi; }
.photo-face__title.len-l { font-size: 5.5cqi; }

.photo-face__en {
  margin-top: 2.6cqi;
  font-family: "Deck Sans", "Noto Sans TC", sans-serif;
  font-weight: 300;
  font-size: 3.2cqi;
  line-height: 1.55;
  letter-spacing: 0.12em;
  color: rgb(255 255 255 / 0.92);
  text-shadow: 0 1px 12px rgb(12 6 22 / 0.5);
}

/* 翻牌容器內的絕對定位（與 .card-face 同步條件） */
.flip-card .photo-face {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  transform: rotateY(180deg);
  box-shadow: var(--shadow-card);
}

/* 風格切換列 */
.style-switch {
  margin-top: 0.6rem;
  display: inline-flex;
  gap: 1rem;
  align-items: center;
  justify-content: center;
}

.style-switch button {
  appearance: none;
  border: 0;
  background: none;
  font: inherit;
  font-size: var(--text-sm);
  letter-spacing: 0.18em;
  text-indent: 0.18em;
  color: var(--ink-faint);
  padding: 0.3em 0.4em;
  cursor: pointer;
  border-bottom: 1px solid transparent;
  transition: color var(--dur-fast) var(--ease-out), border-color var(--dur-fast) var(--ease-out);
}

.style-switch button[aria-pressed="true"] {
  color: var(--gold-dark);
  border-bottom-color: var(--gold-mid);
}

/* 背景音樂開關 */
.bgm-toggle {
  border: 1px solid var(--gold-mid) !important;
  border-radius: 50%;
  width: 2em;
  height: 2em;
  padding: 0 !important;
  text-indent: 0 !important;
  letter-spacing: 0 !important;
  display: inline-grid;
  place-items: center;
  color: var(--gold-dark) !important;
}

.bgm-toggle.is-off {
  color: var(--ink-faint) !important;
  border-color: var(--ink-faint) !important;
  opacity: 0.6;
  text-decoration: line-through;
}