*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; -webkit-tap-highlight-color: transparent; }

:root {
  --bg:    #0a0520;
  --gold:  #d4af37;
  --goldb: #f0d070;
  --pur:   #7c3aed;
  --txt:   #e8e4f0;
  --dim:   #8b84a8;
  --st:    env(safe-area-inset-top, 0px);
  --sb:    env(safe-area-inset-bottom, 0px);
}

html { height: 100%; }
body {
  min-height: 100%; font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Noto Sans SC", sans-serif;
  background: var(--bg); color: var(--txt); overscroll-behavior: none;
  background-image:
    radial-gradient(ellipse at top,    rgba(124,58,237,.22) 0%, transparent 55%),
    radial-gradient(ellipse at bottom, rgba(212,175,55,.07) 0%, transparent 55%);
}

/* ── Stars ── */
.stars {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background-image:
    radial-gradient(1px 1px at 11% 17%, rgba(255,255,255,.7), transparent),
    radial-gradient(1px 1px at 79% 31%, rgba(255,255,255,.6), transparent),
    radial-gradient(1px 1px at 44% 68%, rgba(255,255,255,.5), transparent),
    radial-gradient(1px 1px at 87% 77%, rgba(255,255,255,.6), transparent),
    radial-gradient(1px 1px at 23% 87%, rgba(255,255,255,.5), transparent),
    radial-gradient(1px 1px at 57% 13%, rgba(255,255,255,.6), transparent),
    radial-gradient(1px 1px at 34% 45%, rgba(212,175,55,.6), transparent),
    radial-gradient(2px 2px at 51% 23%, rgba(255,255,255,.8), transparent),
    radial-gradient(1px 1px at 67% 57%, rgba(167,139,250,.6), transparent),
    radial-gradient(2px 2px at 14% 54%, rgba(240,208,112,.5), transparent);
  animation: twinkle 7s ease-in-out infinite alternate;
}
@keyframes twinkle { to { opacity: .8; } }

/* ── Shared page shell ── */
.page {
  position: relative; z-index: 1;
  width: 100%; max-width: 480px; margin: 0 auto;
  min-height: 100vh; min-height: 100dvh;
  padding: calc(var(--st) + 28px) 24px calc(var(--sb) + 36px);
  display: flex; flex-direction: column;
}

.page-title {
  text-align: center; font-size: 20px; letter-spacing: 6px;
  color: var(--gold); font-weight: 500; margin-bottom: 6px;
}
.page-sub {
  text-align: center; font-size: 13px; color: var(--dim); margin-bottom: 24px;
}
.back-link {
  display: inline-block; color: var(--dim); text-decoration: none;
  font-size: 14px; letter-spacing: 1px; margin-bottom: 16px; align-self: flex-start;
  padding: 4px 0;
}
.spacer { flex: 1; }

/* ── Buttons ── */
.btn-main {
  display: block; width: 100%; padding: 16px 20px;
  background: linear-gradient(135deg, var(--pur) 0%, #5b21b6 100%);
  border: 1px solid rgba(212,175,55,.55); border-radius: 14px;
  color: var(--goldb); font-size: 17px; letter-spacing: 8px; font-weight: 500;
  cursor: pointer; text-align: center; text-decoration: none;
  box-shadow: 0 0 28px rgba(124,58,237,.4), inset 0 1px 0 rgba(255,255,255,.1);
  transition: transform .15s;
}
.btn-main:active { transform: scale(.98); }
.btn-main:disabled { opacity: .38; cursor: not-allowed; transform: none; }
.btn-ghost {
  background: transparent; border: none;
  color: var(--dim); font-size: 13px; letter-spacing: 1px;
  cursor: pointer; padding: 4px 8px;
}

/* ══════════════════════════════════════
   INDEX PAGE
══════════════════════════════════════ */
.logo { text-align: center; margin-bottom: 6px; }
.logo-cn {
  font-family: "STZhongsong", "Noto Serif SC", serif;
  font-size: 44px; letter-spacing: 12px;
  background: linear-gradient(170deg, var(--goldb), var(--gold));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.logo-en { font-size: 10px; letter-spacing: 7px; color: var(--dim); margin-top: 5px; }

.sigil {
  font-size: 80px; color: var(--gold); text-align: center; margin: 16px 0;
  text-shadow: 0 0 40px rgba(212,175,55,.5);
  animation: breathe 4s ease-in-out infinite;
}
@keyframes breathe { 0%,100%{transform:scale(1);opacity:.85} 50%{transform:scale(1.06);opacity:1} }

.tagline {
  text-align: center; font-size: 13px; color: var(--dim);
  letter-spacing: 1px; margin-bottom: 28px;
}
.qbox {
  width: 100%; background: rgba(255,255,255,.04);
  border: 1px solid rgba(212,175,55,.25); border-radius: 16px;
  padding: 14px 16px; margin-bottom: 24px;
  backdrop-filter: blur(10px);
}
.qbox label { display: block; font-size: 11px; color: var(--gold); letter-spacing: 2px; margin-bottom: 10px; }
.qbox textarea {
  width: 100%; background: transparent; border: none; outline: none;
  color: var(--txt); font-size: 16px; line-height: 1.6;
  resize: none; min-height: 64px; font-family: inherit;
}
.qbox textarea::placeholder { color: var(--dim); }

/* ══════════════════════════════════════
   SPREAD PAGE
══════════════════════════════════════ */
.spread-list { display: flex; flex-direction: column; gap: 14px; }
.spread-card {
  display: flex; align-items: center; gap: 14px;
  background: rgba(255,255,255,.04);
  border: 1.5px solid rgba(212,175,55,.22); border-radius: 16px;
  padding: 16px; cursor: pointer; text-align: left; color: var(--txt);
  transition: all .18s; text-decoration: none;
}
.spread-card:active, .spread-card:focus { transform: scale(.98); outline: none; }
.spread-card.featured {
  border-color: rgba(212,175,55,.55);
  background: rgba(212,175,55,.08);
  box-shadow: 0 0 20px rgba(212,175,55,.2);
}
.sc-icon {
  flex-shrink: 0; width: 42px; height: 42px; border-radius: 50%;
  border: 1px solid var(--gold);
  display: flex; align-items: center; justify-content: center;
  font-size: 20px; color: var(--goldb);
}
.spread-card.featured .sc-icon { background: var(--gold); color: #0a0520; }
.sc-body { flex: 1; }
.sc-name { display: block; font-size: 16px; color: var(--gold); letter-spacing: 4px; margin-bottom: 4px; }
.sc-desc { display: block; font-size: 12px; color: var(--dim); line-height: 1.5; }
.sc-count { flex-shrink: 0; font-size: 13px; color: var(--dim); white-space: nowrap; }

/* ══════════════════════════════════════
   PICK PAGE  (body is overflow:hidden)
══════════════════════════════════════ */
.pick-page {
  height: 100vh; height: 100dvh;
  overflow: hidden; min-height: 0;
  padding: calc(var(--st) + 14px) 18px calc(var(--sb) + 14px);
}
.pick-nav {
  display: flex; align-items: center; justify-content: space-between;
  flex-shrink: 0; margin-bottom: 6px;
}
.pick-nav-title { font-size: 15px; letter-spacing: 4px; color: var(--gold); }
.pick-hint { flex-shrink: 0; text-align: center; font-size: 13px; color: var(--dim); margin-bottom: 10px; }

.slots { flex-shrink: 0; display: grid; gap: 6px; margin-bottom: 8px; }
.slots.n1  { grid-template-columns: 1fr; max-width: 90px; margin-left: auto; margin-right: auto; }
.slots.n3  { grid-template-columns: repeat(3, 1fr); }
.slots.n10 { grid-template-columns: repeat(5, 1fr); gap: 4px; }

.slot {
  aspect-ratio: 2/3.3; position: relative;
  border: 1.5px dashed rgba(212,175,55,.3); border-radius: 8px;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  color: var(--dim); text-align: center; padding: 2px; transition: all .25s;
}
.slot.filled { border-style: solid; border-color: var(--gold); box-shadow: 0 0 10px rgba(212,175,55,.25); }
.slot .sn { position: absolute; top: 2px; left: 3px; font-size: 8px; color: var(--gold); font-family: serif; }
.slot .sl { font-size: 9px; letter-spacing: .5px; color: var(--dim); }
.slot .sc { position: absolute; inset: 3px; border-radius: 5px; background: linear-gradient(160deg,#1e0f4a,#0a0520); border: 1px solid var(--gold); display: flex; align-items: center; justify-content: center; color: var(--goldb); font-size: 11px; }

.deck-wrap {
  flex: 1; min-height: 0;
  display: flex; align-items: center;
  overflow: hidden; margin: 0 -18px;
}
.deck {
  display: flex; align-items: center;
  overflow-x: auto; overflow-y: hidden;
  -webkit-overflow-scrolling: touch; scrollbar-width: none;
  scroll-snap-type: x mandatory;
  padding: 40px 40vw 28px; width: 100%;
}
.deck::-webkit-scrollbar { display: none; }

.card {
  flex: 0 0 auto; width: 108px; aspect-ratio: 2/3.3;
  border-radius: 10px; margin: 0 -33px;
  scroll-snap-align: center; transform-origin: bottom center;
  cursor: pointer; user-select: none; -webkit-user-drag: none;
  transition: transform .3s cubic-bezier(.2,.9,.3,1), filter .25s;
  position: relative;
}
.card.picked {
  pointer-events: none;   /* transform / visibility handled entirely by JS */
}
.card-back {
  position: absolute; inset: 0; border-radius: 10px;
  background: radial-gradient(circle at 50% 50%, rgba(212,175,55,.14), transparent 58%),
              linear-gradient(148deg, #291456, #0a0520);
  border: 1.5px solid var(--gold);
  box-shadow: inset 0 0 0 3px rgba(10,5,32,.8), inset 0 0 0 4.5px rgba(212,175,55,.55),
              0 6px 18px rgba(0,0,0,.5);
  display: flex; align-items: center; justify-content: center; overflow: hidden;
}
.card-back::before {
  content: ''; position: absolute; inset: 9px;
  border: 1px solid rgba(212,175,55,.35); border-radius: 5px;
  background-image:
    linear-gradient(45deg, rgba(212,175,55,.07) 25%, transparent 25%),
    linear-gradient(-45deg,rgba(212,175,55,.07) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, rgba(212,175,55,.07) 75%),
    linear-gradient(-45deg,transparent 75%, rgba(212,175,55,.07) 75%);
  background-size: 11px 11px; background-position: 0 0,0 5.5px,5.5px -5.5px,-5.5px 0;
}
.card-sig {
  position: relative; width: 46%; aspect-ratio: 1;
  border: 1px solid var(--gold); border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: var(--goldb); font-size: 21px; text-shadow: 0 0 10px var(--gold);
  background: radial-gradient(circle, rgba(10,5,32,.8) 55%, transparent);
}
.pick-footer { flex-shrink: 0; padding-top: 10px; }

/* ══════════════════════════════════════
   READING PAGE
══════════════════════════════════════ */
.mini-cards { display: flex; flex-wrap: wrap; justify-content: center; gap: 6px 10px; margin-bottom: 24px; }
.mini-card {
  flex: 0 0 auto; width: 48px; aspect-ratio: 2/3.3;
  border: 1px solid var(--gold); border-radius: 6px;
  background: linear-gradient(160deg,#1e0f4a,#0a0520);
  position: relative; overflow: visible;
}
.mini-card img {
  position: absolute; inset: 2px; width: calc(100% - 4px); height: calc(100% - 4px);
  object-fit: cover; border-radius: 4px; display: block;
}
.mini-card.rev img { transform: rotate(180deg); }
.mini-tag {
  position: absolute; top: -17px; left: 50%; transform: translateX(-50%);
  font-size: 8px; color: var(--dim); white-space: nowrap; letter-spacing: .5px;
}

.thinking {
  background: rgba(167,139,250,.05); border: 1px solid rgba(167,139,250,.18);
  border-left: 3px solid #a78bfa; border-radius: 10px;
  padding: 10px 14px; margin-bottom: 16px;
  font-size: 12px; color: var(--dim); line-height: 1.7;
  transition: max-height .3s;
}
.t-head {
  display: flex; justify-content: space-between; align-items: center;
  color: #a78bfa; font-size: 11px; letter-spacing: 1px; cursor: pointer;
  margin-bottom: 8px;
}
.t-dot { display: inline-block; width: 6px; height: 6px; border-radius: 50%; background: #a78bfa; margin-right: 7px; animation: pulse 1.2s infinite; }
.thinking.done .t-dot { animation: none; background: var(--gold); }
.t-body { max-height: 180px; overflow-y: auto; }
.t-collapsed .t-body { display: none; }
.t-collapsed .t-head { margin-bottom: 0; }
@keyframes pulse { 50%{opacity:.2} }

.reading-text {
  background: rgba(255,255,255,.03); border: 1px solid rgba(212,175,55,.18);
  border-radius: 12px; padding: 18px;
  font-size: 15px; line-height: 1.9; color: var(--txt);
  white-space: pre-wrap; word-break: break-word; min-height: 120px;
}
.reading-text strong { color: var(--goldb); }
.reading-text.streaming::after { content: '▊'; color: var(--gold); animation: blink 1s infinite; }
@keyframes blink { 50%{opacity:0} }

.err-box {
  color: #f87171; background: rgba(248,113,113,.1);
  border: 1px solid rgba(248,113,113,.25); border-radius: 10px;
  padding: 12px 14px; margin-top: 12px; font-size: 14px;
}

@media (max-height: 680px) {
  .sigil { font-size: 56px; margin: 10px 0; }
  .logo-cn { font-size: 36px; }
}