/* ==========================================
   ORACOOLIO — I-Ťing Styles v2.0
   Cosmic dark aesthetic, gold accents
   ========================================== */

:root {
  --ic-bg:        #06060f;
  --ic-surface:   #0d0d1a;
  --ic-card:      #111128;
  --ic-border:    rgba(201,168,76,0.18);
  --ic-gold:      #c9a84c;
  --ic-gold-dim:  rgba(201,168,76,0.5);
  --ic-gold-faint:rgba(201,168,76,0.2);
  --ic-text:      #e8e0d0;
  --ic-text-dim:  #8a8070;
  --ic-text-faint:#4a4540;
  --ic-red:       #8e2b20;
  --ic-radius:    10px;
  --ic-yang:      var(--ic-gold);
  --ic-yin:       var(--ic-text-dim);
}

html, body {
  margin: 0; padding: 0;
  background: var(--ic-bg);
  overflow-x: hidden; width: 100%;
}

body {
  font-family: 'Crimson Pro', Georgia, serif;
  color: var(--ic-text);
  min-height: 100vh;
}

/* ── Canvas starfield ── */
#iching-canvas {
  position: fixed; top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none; z-index: 0;
  opacity: 0.45;
}

/* ── Layout ── */
.iching-wrap {
  position: relative; z-index: 1;
  max-width: 680px;
  margin: 0 auto;
  padding: 32px 48px 80px;
}

@media (max-width: 700px) {
  .iching-wrap { padding: 20px 20px 60px; }
}

/* ── Header ── */
.iching-header {
  display: flex; align-items: flex-start;
  justify-content: space-between;
  gap: 16px; margin-bottom: 32px;
}

.iching-back {
  font-family: 'Cinzel', serif;
  font-size: 0.7rem; letter-spacing: 0.12em;
  text-transform: uppercase; text-decoration: none;
  color: var(--ic-gold-dim);
  border: 1px solid var(--ic-gold-faint);
  padding: 7px 14px; border-radius: 6px;
  transition: all 0.25s; white-space: nowrap;
  margin-top: 4px;
}
.iching-back:hover { color: var(--ic-gold); border-color: var(--ic-gold-dim); }

.iching-title-group { flex: 1; text-align: center; }

.iching-title {
  font-family: 'Cinzel', serif;
  font-size: clamp(1.8rem, 5vw, 2.6rem);
  font-weight: 700; letter-spacing: 0.08em;
  color: var(--ic-gold);
  margin: 0 0 4px 0;
  text-shadow: 0 0 40px rgba(201,168,76,0.3);
}

.iching-subtitle {
  font-family: 'Crimson Pro', serif;
  font-size: 1rem; font-style: italic;
  color: var(--ic-text-dim);
  margin: 0;
}

/* ── Lang switch ── */
.lang-switch {
  display: flex; align-items: center; gap: 4px;
  font-family: 'Cinzel', serif;
  font-size: 0.65rem; letter-spacing: 0.1em;
  margin-top: 4px;
}
.lang-btn {
  background: none;
  border: 1px solid var(--ic-gold-faint);
  color: var(--ic-text-faint);
  padding: 3px 8px; border-radius: 4px;
  cursor: pointer; font-family: inherit;
  font-size: inherit; letter-spacing: inherit;
  text-transform: uppercase; transition: all 0.2s;
}
.lang-btn.active  { border-color: var(--ic-gold); color: var(--ic-gold); }
.lang-btn:hover:not(.active) { color: var(--ic-text-dim); }
.lang-sep { color: var(--ic-gold-faint); }

/* ── Badge ── */
.iching-badge {
  display: inline-block;
  font-family: 'Cinzel', serif;
  font-size: 0.65rem; letter-spacing: 0.1em;
  text-transform: uppercase;
  border: 1px solid var(--ic-gold);
  color: var(--ic-gold);
  padding: 4px 12px; border-radius: 20px;
  margin-bottom: 28px;
}
.iching-badge.badge-used {
  border-color: var(--ic-text-faint);
  color: var(--ic-text-faint);
}

/* ── Divider ── */
.iching-divider {
  width: 80%; height: 1px; margin: 0 auto 28px;
  background: linear-gradient(90deg, transparent, var(--ic-gold-dim), transparent);
}

/* ── Instruction ── */
#iching-instruction {
  text-align: center;
  font-family: 'Crimson Pro', serif;
  font-size: 1.05rem; font-style: italic;
  color: var(--ic-text-dim);
  margin-bottom: 24px;
  min-height: 1.5em;
  transition: color 0.3s;
}

/* ── Hexagram builder ── */
#hexagram-builder {
  display: flex; flex-direction: column-reverse;
  align-items: center; gap: 8px;
  margin: 0 auto 28px; width: 160px; min-height: 180px;
}

.hex-line { width: 100%; display: flex; gap: 8px; justify-content: center; }

.yang-line .line-segment {
  height: 10px; border-radius: 2px;
  background: linear-gradient(90deg, var(--ic-gold-dim), var(--ic-gold), var(--ic-gold-dim));
  width: 100%;
  box-shadow: 0 0 8px rgba(201,168,76,0.4);
}

.yin-line .line-segment {
  height: 10px; border-radius: 2px;
  background: linear-gradient(90deg, var(--ic-gold-faint), rgba(201,168,76,0.35), var(--ic-gold-faint));
  width: calc(50% - 8px);
}

/* ── Coins ── */
.coins-container {
  display: flex; justify-content: center;
  gap: 20px; margin: 0 0 24px;
  perspective: 800px;
}

.coin {
  width: 72px; height: 72px;
  filter: drop-shadow(0 4px 10px rgba(201,168,76,0.25));
  transition: filter 0.3s;
}
.coin img { width: 100%; height: 100%; object-fit: contain; }

@keyframes tossAnimation {
  0%   { transform: translateY(0) rotateX(0) rotateY(0) scale(1); }
  50%  { transform: translateY(-140px) rotateX(1080deg) rotateY(720deg) scale(1.15); }
  100% { transform: translateY(0) rotateX(2160deg) rotateY(1440deg) scale(1); }
}
.tossing { animation: tossAnimation 0.8s cubic-bezier(0.36,0.07,0.19,0.97) both; }

/* ── Toss button ── */
#toss-btn {
  display: block; margin: 0 auto 28px;
  font-family: 'Cinzel', serif;
  font-size: 0.85rem; font-weight: 600;
  letter-spacing: 0.15em; text-transform: uppercase;
  color: var(--ic-bg);
  background: linear-gradient(135deg, #c9a84c 0%, #a8893c 100%);
  border: none; border-radius: 8px;
  padding: 14px 36px; cursor: pointer;
  box-shadow: 0 4px 20px rgba(201,168,76,0.3);
  transition: all 0.25s;
}
#toss-btn:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(201,168,76,0.45); }
#toss-btn:disabled { opacity: 0.4; cursor: not-allowed; transform: none; box-shadow: none; }

/* ── Result container ── */
#iching-reading-container {
  background: var(--ic-card);
  border: 1px solid var(--ic-border);
  border-radius: var(--ic-radius);
  padding: 28px 32px;
  margin: 0 auto;
  max-width: 560px;
}

.hex-result-header {
  display: flex; align-items: center;
  gap: 16px; margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--ic-gold-faint);
}

.hex-number {
  font-family: 'Cinzel', serif;
  font-size: 2.2rem; font-weight: 700;
  color: var(--ic-gold); opacity: 0.5;
  line-height: 1;
}

.hex-result-header h4 {
  font-family: 'Cinzel', serif;
  font-size: 1.3rem; font-weight: 600;
  color: var(--ic-gold); margin: 0;
  letter-spacing: 0.05em;
}

.hex-result-body p {
  font-size: 1rem; line-height: 1.75;
  color: var(--ic-text); margin-bottom: 14px;
}

.hex-label {
  font-family: 'Cinzel', serif;
  font-size: 0.7rem; letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ic-gold-dim);
  margin-right: 6px;
}

.hex-image { color: var(--ic-text-dim) !important; }

/* ── New reading button ── */
#new-reading-btn {
  display: block; margin: 20px auto 0;
  font-family: 'Cinzel', serif;
  font-size: 0.75rem; letter-spacing: 0.12em;
  text-transform: uppercase;
  background: none;
  border: 1px solid var(--ic-gold-faint);
  color: var(--ic-gold-dim);
  padding: 10px 24px; border-radius: 6px;
  cursor: pointer; transition: all 0.25s;
}
#new-reading-btn:hover { border-color: var(--ic-gold-dim); color: var(--ic-gold); }

/* ── Hidden utility ── */
.hidden { display: none !important; }

/* ── Ornament ── */
.iching-ornament {
  text-align: center;
  color: var(--ic-gold-faint);
  font-size: 0.8rem;
  letter-spacing: 0.3em;
  margin: 32px 0;
}