:root {
  color-scheme: dark;
  --ink: #14110f;
  --ink-soft: #1c1815;
  --panel: #241f1a;
  --panel-raised: #2d2721;
  --paper: #f2e5cb;
  --paper-deep: #dcc7a1;
  --gold: #c99a53;
  --gold-soft: #7b6039;
  --red: #b42a31;
  --red-bright: #df4750;
  --text: #f6ead6;
  --muted: #b9a991;
  --line: rgba(216, 187, 139, 0.2);
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.34);
}

* { box-sizing: border-box; }

html, body { min-height: 100%; }
html { background: var(--ink); }

body {
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 20% 0%, rgba(142, 32, 37, 0.22), transparent 35rem),
    radial-gradient(circle at 100% 100%, rgba(183, 138, 69, 0.13), transparent 38rem),
    var(--ink);
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  overscroll-behavior-y: none;
}

button { font: inherit; }

.app-shell {
  width: min(1180px, calc(100% - 32px));
  min-height: 100svh;
  margin: 0 auto;
  padding: 24px 0 32px;
  display: grid;
  grid-template-rows: auto 1fr;
  gap: 18px;
}

.topbar {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 20px;
  padding: 0 4px;
}

.step-label {
  margin: 0 0 5px;
  color: var(--gold);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

h1, h2, p { margin-top: 0; }
h1 { margin-bottom: 0; font-family: STKaiti, KaiTi, serif; font-size: clamp(2rem, 4vw, 3.2rem); line-height: 1; letter-spacing: 0.08em; }
h2 { margin-bottom: 0; font-size: 1.35rem; }
.subtitle { margin: 8px 0 0; color: var(--paper-deep); font-family: STKaiti, KaiTi, serif; font-size: 0.95rem; letter-spacing: 0.12em; }

.workspace {
  min-height: 0;
  display: grid;
  grid-template-columns: minmax(360px, 0.92fr) minmax(440px, 1.08fr);
  gap: 16px;
}

.selector-panel, .results-panel {
  min-height: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: linear-gradient(145deg, rgba(45, 39, 33, 0.96), rgba(28, 24, 21, 0.98));
  box-shadow: var(--shadow);
}

.selector-panel { padding: 22px; }
.results-panel { display: grid; grid-template-rows: auto 1fr; }

.panel-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 20px;
}

.results-heading { margin: 0; padding: 17px 22px; border-bottom: 1px solid var(--line); }
.results-label { margin: 0; }
.count { display: inline-grid; min-width: 1.8em; height: 1.8em; place-items: center; margin-left: 7px; border-radius: 999px; color: var(--ink); background: var(--gold); font-size: 0.75rem; vertical-align: 0.15em; }

.choice-grid { display: grid; gap: 12px; }
.suit-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.rank-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.choice {
  min-height: 112px;
  border: 1px solid var(--line);
  border-radius: 16px;
  color: var(--text);
  background: rgba(255, 255, 255, 0.035);
  cursor: pointer;
  transition: transform 120ms ease, border-color 120ms ease, background 120ms ease;
  -webkit-tap-highlight-color: transparent;
}

.choice:hover { transform: translateY(-2px); border-color: rgba(201, 154, 83, 0.65); background: rgba(255, 255, 255, 0.07); }
.choice:active { transform: scale(0.97); }
.choice:focus-visible, .clear-button:focus-visible, .back-button:focus-visible { outline: 3px solid rgba(201, 154, 83, 0.6); outline-offset: 3px; }

.suit { display: grid; place-content: center; gap: 2px; font-size: 1rem; font-weight: 700; }
.suit .symbol { font-family: Georgia, serif; font-size: 3.3rem; line-height: 1; }
.suit.red .symbol { color: var(--red-bright); }
.suit.black .symbol { color: var(--paper); }

.rank-view[hidden], .category-view[hidden], .suit-grid[hidden], .error-flash[hidden] { display: none; }
.selected-suit { margin: -4px 0 14px; color: var(--muted); font-size: 0.92rem; }
.selected-suit strong { color: var(--text); font-size: 1.15rem; }
.rank-grid .choice { min-height: 70px; font-family: Georgia, "Times New Roman", serif; font-size: 1.45rem; font-weight: 700; }
.rank-grid .choice:last-child { grid-column: span 1; }

.category-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.category { min-height: 150px; display: grid; place-content: center; gap: 10px; font-weight: 700; }
.category-mark { display: grid; width: 58px; height: 58px; place-items: center; margin: 0 auto; border: 1px solid var(--gold-soft); border-radius: 50%; color: var(--gold); font-family: STKaiti, KaiTi, serif; font-size: 1.7rem; }
.selected-suit strong.red { color: var(--red-bright); }

.error-flash {
  margin-top: 14px;
  padding: 15px 16px;
  border: 2px solid var(--red-bright);
  border-radius: 13px;
  color: #fff1e7;
  background: rgba(180, 42, 49, 0.28);
  font-weight: 800;
  text-align: center;
  box-shadow: 0 0 0 4px rgba(180, 42, 49, 0.12);
}
.error-flash.pulse { animation: error-pulse 260ms ease-out; }

.clear-button, .back-button {
  min-height: 42px;
  padding: 0 16px;
  border: 1px solid var(--gold-soft);
  border-radius: 999px;
  color: var(--paper);
  background: transparent;
  cursor: pointer;
}
.clear-button:hover:not(:disabled), .back-button:hover { background: rgba(201, 154, 83, 0.12); }
.clear-button:disabled { opacity: 0.38; cursor: default; }
.clear-button { min-height: 34px; padding: 0 12px; font-size: 0.84rem; }

.results-scroll {
  min-height: 0;
  max-height: calc(100svh - 150px);
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 16px;
  scrollbar-color: var(--gold-soft) transparent;
}

.empty-state { min-height: 100%; display: grid; place-content: center; justify-items: center; gap: 10px; color: var(--muted); text-align: center; }
.empty-state[hidden] { display: none; }
.empty-state p { margin: 0; }
.empty-mark { display: grid; width: 58px; height: 58px; place-items: center; border: 1px solid var(--gold-soft); border-radius: 50%; color: var(--gold); font-family: STKaiti, KaiTi, serif; font-size: 1.6rem; }

.history { display: grid; gap: 12px; margin: 0; padding: 0; list-style: none; }
.result-card { display: grid; grid-template-columns: 76px 1fr; gap: 15px; padding: 16px; border: 1px solid var(--line); border-radius: 16px; background: rgba(0, 0, 0, 0.16); animation: enter 160ms ease-out; }
.query-mark { display: grid; place-content: center; min-height: 76px; border-radius: 12px; color: var(--ink); background: linear-gradient(145deg, var(--paper), var(--paper-deep)); font-family: Georgia, serif; text-align: center; box-shadow: inset 0 0 0 2px rgba(123, 96, 57, 0.18); }
.query-mark .query-symbol { font-size: 1.7rem; line-height: 1; }
.query-mark .query-rank { font-size: 1.35rem; font-weight: 800; }
.query-mark.red { color: var(--red); }
.result-content { min-width: 0; }
.result-meta { margin: 0 0 9px; color: var(--muted); font-size: 0.8rem; }
.card-list { display: flex; flex-wrap: wrap; gap: 8px; }
.card-chip { display: inline-flex; align-items: center; gap: 6px; min-height: 34px; padding: 6px 10px; border-radius: 9px; color: var(--text); background: var(--panel-raised); font-weight: 650; }
.card-chip small { color: var(--gold); font-size: 0.72rem; font-weight: 700; }

@keyframes enter { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }
@keyframes error-pulse { 0% { transform: scale(0.96); } 55% { transform: scale(1.025); } 100% { transform: scale(1); } }

@media (max-width: 820px) {
  .app-shell { width: min(100% - 10px, 680px); padding: 6px 0 10px; gap: 6px; }
  .topbar { display: block; padding: 0 2px; }
  .brand { display: flex; align-items: baseline; gap: 8px; }
  h1 { font-size: 1.6rem; }
  h2 { font-size: 1.08rem; }
  .subtitle { margin: 0; font-size: 0.8rem; letter-spacing: 0.06em; }
  .step-label { margin-bottom: 3px; font-size: 0.7rem; }
  .workspace { grid-template-columns: 1fr; grid-template-rows: minmax(300px, 50svh) auto; gap: 6px; }
  .results-panel { order: 1; }
  .selector-panel { order: 2; }
  .selector-panel, .results-panel { border-radius: 13px; }
  .selector-panel { padding: 9px; }
  .panel-heading { gap: 8px; margin-bottom: 8px; }
  .results-heading { padding: 7px 9px; }
  .choice-grid { gap: 5px; }
  .choice { min-height: 54px; border-radius: 10px; }
  .suit { gap: 0; font-size: 0.86rem; }
  .suit .symbol { font-size: 1.7rem; }
  .rank-grid .choice { min-height: 40px; font-size: 1.18rem; }
  .selected-suit { margin: -2px 0 6px; font-size: 0.8rem; }
  .selected-suit strong { font-size: 1rem; }
  .category { min-height: 62px; gap: 3px; font-size: 0.86rem; }
  .category-mark { width: 32px; height: 32px; font-size: 1.05rem; }
  .back-button { min-height: 32px; padding: 0 10px; font-size: 0.8rem; }
  .error-flash { margin-top: 7px; padding: 9px 10px; }
  .results-scroll { max-height: none; padding: 7px; }
  .empty-mark { width: 44px; height: 44px; font-size: 1.3rem; }
  .empty-state { gap: 6px; font-size: 0.88rem; }
  .history { gap: 6px; }
  .result-card { grid-template-columns: 48px 1fr; gap: 8px; padding: 7px; border-radius: 10px; }
  .query-mark { min-height: 48px; border-radius: 8px; }
  .query-mark .query-symbol { font-size: 1.18rem; }
  .query-mark .query-rank { font-size: 0.98rem; }
  .result-meta { margin-bottom: 4px; font-size: 0.7rem; }
  .card-list { gap: 4px; }
  .card-chip { min-height: 27px; padding: 3px 7px; border-radius: 7px; font-size: 0.88rem; }
  .card-chip small { font-size: 0.66rem; }
}

@media (max-width: 500px) {
  .app-shell { width: calc(100% - 8px); }
  .workspace { grid-template-rows: minmax(300px, 52svh) auto; }
  .rank-grid { grid-template-columns: repeat(4, 1fr); }
  .rank-grid .choice { min-height: 38px; }
  .category { min-height: 58px; }
}

@media (display-mode: standalone) {
  .app-shell {
    min-height: 100dvh;
    padding-top: calc(env(safe-area-inset-top, 0px) + 8px);
    padding-bottom: calc(env(safe-area-inset-bottom, 0px) + 8px);
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}