:root {
  --color-night-deep: #070b1a;
  --color-night: #10162b;
  --color-night-soft: #18213a;
  --color-surface: rgba(20, 28, 50, 0.82);
  --color-surface-strong: rgba(27, 36, 62, 0.94);
  --color-surface-soft: rgba(255, 255, 255, 0.035);
  --color-text: #f2f0e9;
  --color-text-muted: #b8bdca;
  --color-border: rgba(225, 214, 185, 0.2);
  --color-border-strong: rgba(225, 214, 185, 0.38);
  --color-gold: #c3ad72;
  --color-gold-soft: rgba(195, 173, 114, 0.14);
  --color-gold-glow: rgba(195, 173, 114, 0.22);
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4rem;
  --radius-sm: 0.55rem;
  --radius-md: 0.9rem;
  --radius-lg: 1.35rem;
  --radius-pill: 999px;
  --content-width: 72rem;
  --text-width: 44rem;
  --transition: 180ms ease;
}

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

html {
  min-width: 0;
  color-scheme: dark;
  scroll-behavior: smooth;
}

body {
  position: relative;
  isolation: isolate;
  min-width: 0;
  min-height: 100vh;
  margin: 0;
  overflow-x: hidden;
  color: var(--color-text);
  background:
    linear-gradient(
      180deg,
      var(--color-night-deep) 0%,
      var(--color-night) 48%,
      var(--color-night-soft) 100%
    );
  font-family:
    "Yu Mincho", "Hiragino Mincho ProN", "Hiragino Mincho Pro", Georgia,
    serif;
  font-size: 1rem;
  line-height: 1.75;
  text-rendering: optimizeLegibility;
}

/* 大小の異なる点描を重ね、外部画像なしで静かな星空を作る。 */
body::before,
body::after {
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  content: "";
}

body::before {
  opacity: 0.52;
  background-image:
    radial-gradient(circle at 12% 18%, rgba(255, 255, 255, 0.56) 0 1px, transparent 1.3px),
    radial-gradient(circle at 68% 12%, rgba(255, 255, 255, 0.42) 0 0.8px, transparent 1.2px),
    radial-gradient(circle at 83% 38%, rgba(255, 255, 255, 0.5) 0 1px, transparent 1.4px),
    radial-gradient(circle at 31% 65%, rgba(255, 255, 255, 0.36) 0 0.8px, transparent 1.2px),
    radial-gradient(circle at 54% 86%, rgba(255, 255, 255, 0.38) 0 1px, transparent 1.4px);
  background-size: 14rem 16rem, 19rem 17rem, 23rem 21rem, 17rem 22rem, 29rem 24rem;
}

body::after {
  z-index: -1;
  opacity: 0.36;
  background-image:
    radial-gradient(circle at 24% 27%, rgba(195, 173, 114, 0.52) 0 0.8px, transparent 1.2px),
    radial-gradient(circle at 76% 72%, rgba(255, 255, 255, 0.42) 0 0.7px, transparent 1.1px),
    radial-gradient(circle at 47% 45%, rgba(255, 255, 255, 0.34) 0 0.7px, transparent 1.1px);
  background-size: 31rem 27rem, 26rem 32rem, 37rem 29rem;
}

img,
svg,
canvas,
video {
  display: block;
  max-width: 100%;
  height: auto;
}

button,
input,
select,
textarea {
  max-width: 100%;
  color: inherit;
  font: inherit;
}

a {
  color: inherit;
  text-decoration-color: rgba(195, 173, 114, 0.52);
  text-underline-offset: 0.22em;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1,
h2,
h3 {
  margin-block: 0 var(--space-4);
  line-height: 1.35;
  letter-spacing: 0.055em;
}

p {
  margin-block: 0 var(--space-4);
}

.site-header,
.site-footer,
#app {
  width: min(calc(100% - 2rem), var(--content-width));
  margin-inline: auto;
}

.site-header {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
  min-height: 6rem;
  padding-block: var(--space-4);
  padding-left: clamp(3.8rem, 8vw, 5.8rem);
  border-bottom: 1px solid var(--color-border);
}

/* 2枚の擬似要素で三日月の輪郭と欠けを作り、外光はごく淡く留める。 */
.site-header::before,
.site-header::after {
  position: absolute;
  top: 50%;
  left: 0.35rem;
  width: 2.8rem;
  aspect-ratio: 1;
  border-radius: 50%;
  pointer-events: none;
  content: "";
  transform: translateY(-50%);
}

.site-header::before {
  border: 1px solid rgba(195, 173, 114, 0.72);
  background: rgba(195, 173, 114, 0.1);
  box-shadow:
    0 0 1.6rem rgba(195, 173, 114, 0.16),
    inset 0 0 0.8rem rgba(255, 255, 255, 0.07);
}

.site-header::after {
  left: 1.28rem;
  width: 2.55rem;
  border: 1px solid rgba(255, 255, 255, 0.035);
  background: var(--color-night-deep);
}

#app {
  min-height: calc(100vh - 15rem);
  padding-block: clamp(var(--space-6), 6vw, var(--space-8));
}

.site-footer {
  display: grid;
  gap: var(--space-4);
  padding-block: var(--space-6);
  border-top: 1px solid var(--color-border);
  color: var(--color-text-muted);
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2) var(--space-4);
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-links a {
  display: inline-flex;
  align-items: center;
  min-height: 2.75rem;
  padding-inline: var(--space-2);
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition), background-color var(--transition);
}

.nav-links a:hover,
.nav-links a:focus-visible,
.nav-links a[aria-current="page"] {
  color: var(--color-text);
  background: var(--color-gold-soft);
  border-radius: var(--radius-sm);
}

.card,
.result,
.moon-day-panel,
.cta,
.empty-state {
  position: relative;
  min-width: 0;
  padding: clamp(1.25rem, 3.5vw, 2.25rem);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.045), transparent 42%),
    var(--color-surface);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.075);
}

.card {
  transition:
    transform var(--transition),
    border-color var(--transition),
    background-color var(--transition);
}

.card:hover,
.card:focus-within {
  border-color: var(--color-border-strong);
  background-color: var(--color-surface-strong);
  transform: translateY(-0.18rem);
}

.btn,
.x-follow-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-width: 0;
  min-height: 2.85rem;
  padding: 0.68rem 1.25rem;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-pill);
  color: var(--color-text);
  background: rgba(255, 255, 255, 0.035);
  font-weight: 700;
  line-height: 1.35;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  transition:
    transform var(--transition),
    border-color var(--transition),
    background-color var(--transition);
}

.btn:hover,
.x-follow-btn:hover {
  border-color: var(--color-gold);
  background: var(--color-gold-soft);
  transform: translateY(-0.1rem);
}

.btn-primary {
  border-color: var(--color-gold);
  color: var(--color-night-deep);
  background: var(--color-gold);
}

.btn-primary:hover {
  color: var(--color-night-deep);
  background: var(--color-gold);
}

.btn-ghost,
.x-follow-btn {
  border-color: rgba(195, 173, 114, 0.5);
  color: var(--color-gold);
  background: transparent;
}

.btn:disabled,
.btn[aria-disabled="true"] {
  opacity: 0.48;
  cursor: not-allowed;
  transform: none;
}

.btn:focus-visible,
.x-follow-btn:focus-visible,
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--color-gold);
  outline-offset: 3px;
}

.disclaimer {
  max-width: var(--text-width);
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.78rem;
  line-height: 1.7;
}

.cta {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: var(--space-5);
  margin-top: var(--space-6);
  background:
    linear-gradient(120deg, var(--color-gold-soft), transparent 55%),
    var(--color-surface);
}

.cta > * {
  min-width: 0;
}

.grid-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 15rem), 1fr));
  gap: clamp(var(--space-4), 2.5vw, var(--space-5));
}

.zodiac-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 8.5rem), 1fr));
  gap: var(--space-3);
}

.zodiac-grid > * {
  min-width: 0;
}

.moon-calendar {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: clamp(0.2rem, 0.8vw, 0.55rem);
  width: 100%;
  min-width: 0;
}

.moon-calendar > * {
  display: grid;
  place-items: center;
  min-width: 0;
  min-height: clamp(2.55rem, 8vw, 5.25rem);
  padding: clamp(0.18rem, 0.8vw, 0.55rem);
  border: 1px solid rgba(225, 214, 185, 0.13);
  border-radius: clamp(0.38rem, 1vw, 0.75rem);
  background: var(--color-surface-soft);
  font-size: clamp(0.66rem, 1.8vw, 0.95rem);
  line-height: 1.25;
  text-align: center;
  overflow-wrap: anywhere;
}

.moon-calendar button {
  width: 100%;
  height: 100%;
  border: 0;
  border-radius: inherit;
  background: transparent;
  cursor: pointer;
}

.moon-calendar [aria-selected="true"],
.moon-calendar .selected {
  border-color: var(--color-gold);
  background: var(--color-gold-soft);
  color: var(--color-text);
}

.moon-day-panel {
  margin-top: var(--space-5);
  border-color: var(--color-border-strong);
}

.moon-day-panel > :last-child,
.result > :last-child,
.card > :last-child,
.cta > :last-child,
.empty-state > :last-child {
  margin-bottom: 0;
}

.site-cat {
  display: block;
  width: 10rem;
  height: 10rem;
  margin: 0 auto var(--space-5);
  border: 1px solid var(--color-border-strong);
  border-radius: 50%;
  object-fit: cover;
  object-position: center 30%;
}

.tarot-card {
  position: relative;
  width: min(100%, 14rem);
  aspect-ratio: 2 / 3;
  margin-inline: auto;
  transform-style: preserve-3d;
  transition: transform 680ms cubic-bezier(0.2, 0.72, 0.2, 1);
  cursor: pointer;
  perspective: 70rem;
}

.tarot-card.flipped {
  transform: perspective(70rem) rotateY(180deg);
}

.tarot-card > .tarot-front,
.tarot-card > .tarot-back {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: var(--space-5);
  overflow: hidden;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-lg);
  background: var(--color-surface-strong);
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}

.tarot-card > .tarot-front {
  background:
    radial-gradient(circle at center, var(--color-gold-soft) 0 5%, transparent 5.5%),
    linear-gradient(145deg, rgba(255, 255, 255, 0.05), transparent 45%),
    var(--color-surface-strong);
}

.tarot-card > .tarot-back {
  transform: rotateY(180deg);
  padding: 0;
}

.tarot-back > .tarot-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: inherit;
}

.tarot-back > .tarot-img.reversed {
  transform: rotate(180deg);
}

.result {
  margin-top: var(--space-6);
  border-color: var(--color-border-strong);
}

.rank-list {
  display: grid;
  gap: var(--space-3);
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: rank;
}

.rank-list > li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: start;
  gap: var(--space-3);
  min-width: 0;
  padding: var(--space-4);
  border-bottom: 1px solid var(--color-border);
  counter-increment: rank;
}

.rank-list > li::before {
  display: grid;
  place-items: center;
  width: 2rem;
  aspect-ratio: 1;
  border: 1px solid rgba(195, 173, 114, 0.45);
  border-radius: 50%;
  color: var(--color-gold);
  content: counter(rank);
  font-size: 0.82rem;
  line-height: 1;
}

.rank-list > li:last-child {
  border-bottom: 0;
}

.star {
  color: var(--color-gold);
  letter-spacing: 0.08em;
  text-shadow: 0 0 0.65rem var(--color-gold-glow);
}

.error-text {
  margin-top: var(--space-2);
  color: var(--color-gold);
  font-size: 0.88rem;
  font-weight: 700;
}

.error-text::before {
  margin-right: 0.35em;
  content: "※";
}

.empty-state {
  display: grid;
  place-items: center;
  min-height: 10rem;
  color: var(--color-text-muted);
  text-align: center;
}

@media (max-width: 48rem) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
    padding-left: 3.8rem;
  }

  .site-header::before {
    top: 1.45rem;
    transform: none;
  }

  .site-header::after {
    top: 1.45rem;
    transform: none;
  }

  .nav-links {
    width: 100%;
    gap: var(--space-1) var(--space-2);
  }

  .nav-links a {
    min-height: 2.55rem;
    padding-inline: 0.4rem;
    font-size: 0.88rem;
  }

  .cta {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 23.4375rem) {
  .site-header,
  .site-footer,
  #app {
    width: min(calc(100% - 1.25rem), var(--content-width));
  }

  .site-header {
    padding-left: 3.45rem;
  }

  .site-header::before {
    left: 0.1rem;
    width: 2.5rem;
  }

  .site-header::after {
    left: 0.92rem;
    width: 2.3rem;
  }

  .moon-calendar {
    grid-template-columns: repeat(7, minmax(0, 1fr));
    gap: 0.18rem;
  }

  .moon-calendar > * {
    min-height: clamp(2.15rem, 11vw, 2.7rem);
    padding: clamp(0.08rem, 0.5vw, 0.18rem);
    font-size: clamp(0.58rem, 2.6vw, 0.72rem);
  }

  .btn,
  .x-follow-btn {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}

/* 仕上げパス(Fable): ヘッダー館名とフッター内余白 */
.site-name {
  font-family: inherit;
  font-size: 1.05rem;
  letter-spacing: 0.14em;
  color: var(--color-text);
  text-decoration: none;
  white-space: nowrap;
}
.site-name:hover { color: var(--color-gold, #c3ad72); }
.site-footer-inner { display: grid; gap: var(--space-3); justify-items: start; }
.room-glyph {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3.4rem;
  height: 3.4rem;
  border: 1px solid rgba(195, 173, 114, 0.55);
  border-radius: 50%;
  color: rgba(222, 202, 145, 0.92);
  font-size: 1.5rem;
  background: rgba(195, 173, 114, 0.08);
  box-shadow: 0 0 1.2rem rgba(195, 173, 114, 0.12);
}