:root {
  --bg: #0b1220;
  --panel: #131c2e;
  --panel-2: #1b2740;
  --text: #e8edf6;
  --muted: #93a1bd;
  --accent: #5b8cff;
  --accent-2: #7c5cff;
  --best: #1f7a4d;
  --best-bg: rgba(41, 196, 122, 0.16);
  --chip-on: linear-gradient(135deg, #4f8cff, #7c5cff);
  --border: #25324c;
  --radius: 14px;
}
@media (prefers-color-scheme: light) {
  :root {
    --bg: #f3f5fa;
    --panel: #ffffff;
    --panel-2: #f0f3fa;
    --text: #18223a;
    --muted: #61708d;
    --best-bg: rgba(31, 122, 77, 0.12);
    --border: #e1e7f2;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
}
.wrap { max-width: 720px; margin: 0 auto; padding: 20px 16px 48px; }

.hero { text-align: center; margin: 8px 0 22px; }
.hero h1 { margin: 0; font-size: 1.9rem; letter-spacing: -0.02em; }
.tag { margin: 6px 0 0; color: var(--muted); }

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 16px;
}
.panel-head { display: flex; align-items: center; justify-content: space-between; }
.panel h2 { margin: 0 0 12px; font-size: 1.1rem; }
.panel-head h2 { margin: 0; }
.count { color: var(--muted); font-weight: 400; }

.search {
  width: 100%;
  margin: 12px 0;
  padding: 11px 14px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--panel-2);
  color: var(--text);
  font-size: 1rem;
}
.search:focus { outline: 2px solid var(--accent); outline-offset: 1px; }

.issuer-group {
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--panel-2);
  margin-top: 10px;
}
.issuer-group:first-child { margin-top: 12px; }
.issuer-head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 13px;
  cursor: pointer;
  list-style: none;
  font-weight: 700;
}
.issuer-head::-webkit-details-marker { display: none; }
.ih-left { display: flex; align-items: center; gap: 8px; flex: 1; font-size: 0.95rem; }
.issuer-group .chips { padding: 0 13px 13px; }
.owned-pill {
  background: var(--chip-on);
  color: #fff;
  font-weight: 700;
  font-size: 0.72rem;
  min-width: 22px;
  text-align: center;
  padding: 2px 7px;
  border-radius: 999px;
  flex: 0 0 auto;
}
.chev { color: var(--muted); flex: 0 0 auto; transition: transform 0.15s ease; }
details[open] > summary .chev { transform: rotate(90deg); }

/* Foldable wallet panel */
.fold-summary {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  list-style: none;
}
.fold-summary::-webkit-details-marker { display: none; }
.fold-title { margin: 0; flex: 1; font-size: 1.1rem; }
#wallet-panel[open] .search { margin-top: 14px; }
#clear-wallet { margin-top: 12px; }
.logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 19px;
  border-radius: 4px;
  background: var(--logo, #5b6b86);
  color: #fff;
  font-size: 0.62rem;
  font-weight: 800;
  letter-spacing: 0.01em;
  flex: 0 0 auto;
}
.issuer-head .logo { width: 32px; height: 21px; font-size: 0.66rem; }
.cat-winner .logo, .row-card .logo { vertical-align: middle; margin-right: 2px; }

.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 13px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--panel-2);
  color: var(--text);
  font-size: 0.92rem;
  cursor: pointer;
  transition: transform 0.05s ease, border-color 0.15s ease;
}
.chip:hover { border-color: var(--accent); }
.chip:active { transform: scale(0.97); }
.chip.on { background: var(--chip-on); border-color: transparent; color: #fff; font-weight: 600; }
.chip .fee { font-size: 0.78rem; opacity: 0.7; }
.chip.on .fee { opacity: 0.85; }

.empty, .tip {
  background: var(--panel-2);
  border: 1px dashed var(--border);
  border-radius: 10px;
  padding: 14px;
  color: var(--muted);
  margin: 4px 0 0;
}
.tip { border-style: solid; color: var(--text); }
.tip-list { margin: 8px 0 0; padding-left: 20px; }
.tip-list li { margin: 3px 0; }

.wallet-hint { font-size: 0.82rem; margin: 12px 0 0; }
.chip-pv { display: inline-flex; flex-direction: column; align-items: flex-start; gap: 5px; }
.chip .gem { font-size: 0.82em; margin-left: 1px; }
.pv {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 0.78rem;
  color: var(--muted);
  padding-left: 8px;
}
.pv select {
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 3px 6px;
  font-size: 0.78rem;
  cursor: pointer;
}

/* 💗 easter egg */
.heart-layer { position: fixed; inset: 0; pointer-events: none; overflow: hidden; z-index: 9999; }
.heart {
  position: absolute;
  bottom: -48px;
  animation-name: floatUp;
  animation-timing-function: ease-in;
  animation-fill-mode: forwards;
  will-change: transform, opacity;
}
@keyframes floatUp {
  0% { transform: translateY(0) scale(0.7); opacity: 0; }
  12% { opacity: 1; }
  100% { transform: translateY(-112vh) scale(1.25); opacity: 0; }
}
.merchant-card.egg {
  text-align: center;
  background: linear-gradient(135deg, #ff5e8a, #ff8fb1);
  border: none;
  padding: 28px 16px;
  cursor: pointer;
  user-select: none;
  transition: transform 0.08s ease;
}
.merchant-card.egg:active { transform: scale(0.98); }
.egg-msg { font-size: 1.5rem; font-weight: 800; color: #fff; }
.egg-sub { margin-top: 8px; font-size: 0.85rem; font-weight: 600; color: rgba(255, 255, 255, 0.88); }

.merchant-card {
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px;
  margin-top: 12px;
}
.merchant-card.unknown { color: var(--muted); }
.merchant-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}
.merchant-name { font-weight: 700; font-size: 1.05rem; }
.merchant-best {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  font-size: 1.05rem;
}
.merchant-best .badge { margin-left: auto; font-size: 1rem; }
.merchant-best .logo { vertical-align: middle; margin-right: 2px; }
.merchant-warn {
  background: rgba(245, 179, 1, 0.14);
  border: 1px solid rgba(245, 179, 1, 0.45);
  color: var(--text);
  border-radius: 8px;
  padding: 8px 11px;
  font-size: 0.85rem;
  margin-bottom: 10px;
}
.merchant-note { font-size: 0.84rem; color: var(--muted); margin-top: 8px; }
.merchant-others { font-size: 0.86rem; color: var(--muted); margin-top: 8px; }
.merchant-others .logo { vertical-align: middle; }

/* category reordering (edit mode) */
.link-btn.active { font-weight: 700; }
.reorder-bar { font-size: 0.85rem; color: var(--muted); margin: 4px 0 12px; }
.reorder-list { display: flex; flex-direction: column; gap: 8px; }
.reorder-row {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 14px;
}
.reorder-row.dragging { opacity: 0.6; border-color: var(--accent); }
.reorder-handle { cursor: grab; touch-action: none; user-select: none; color: var(--muted); font-size: 1.15rem; }
.ro-label { flex: 1; font-weight: 600; }
.ro-btns { display: flex; gap: 6px; }
.ro-btns button {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  font-size: 1rem;
  cursor: pointer;
}
.ro-btns button:active { background: var(--chip-on); color: #fff; }

.cat {
  border: 1px solid var(--border);
  border-radius: 10px;
  margin-top: 10px;
  background: var(--panel-2);
  overflow: hidden;
}
.cat > summary {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 10px;
  padding: 13px 14px;
  cursor: pointer;
  list-style: none;
}
.cat > summary::-webkit-details-marker { display: none; }
.cat-label { font-weight: 600; }
.cat-winner { color: var(--muted); font-size: 0.9rem; text-align: right; }
.badge {
  background: var(--best-bg);
  color: var(--text);
  border: 1px solid var(--border);
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 999px;
  font-variant-numeric: tabular-nums;
}
.rank { list-style: none; margin: 0; padding: 0 14px 12px; }
.rank li {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 6px 12px;
  padding: 8px 0;
  border-top: 1px solid var(--border);
  align-items: baseline;
}
.row-card { font-weight: 500; }
.row-rate { font-variant-numeric: tabular-nums; font-weight: 700; }
.row-note { grid-column: 1 / -1; font-size: 0.82rem; color: var(--muted); }

.link-btn {
  background: none;
  border: none;
  color: var(--accent);
  cursor: pointer;
  font-size: 0.92rem;
  padding: 10px 0 0;
}
.link-btn:hover { text-decoration: underline; }

#matrix-wrap { overflow-x: auto; margin-top: 8px; }
.matrix { border-collapse: collapse; width: 100%; font-size: 0.88rem; }
.matrix th, .matrix td {
  border: 1px solid var(--border);
  padding: 8px 10px;
  text-align: center;
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}
.matrix thead th { background: var(--panel-2); position: sticky; top: 0; }
.matrix tbody th { text-align: left; font-weight: 600; background: var(--panel-2); }
.matrix .corner { text-align: left; }
.matrix td.best { background: var(--best-bg); color: var(--text); font-weight: 800; }
.matrix td.is-base { color: var(--muted); }

.foot { color: var(--muted); font-size: 0.82rem; margin-top: 20px; text-align: center; }
.foot p { margin: 6px 0; }
.muted { color: var(--muted); }
.small { font-size: 0.8rem; }
code { background: var(--panel-2); padding: 1px 6px; border-radius: 6px; }
.hidden { display: none !important; }