/* ── Warm-grey futuristic theme ─────────────────────────────
   Graphite-warm gradient background (grey, not beige, never black)
   with a terracotta accent. Animations stay fast: 120–220ms,
   snappy easing, stagger capped at ~120ms total. */

:root {
  --bg-top: #45423e;
  --bg: #3a3835;
  --bg-bottom: #2e2c2a;
  --card: #423f3b;
  --card-hi: #4c4945;
  --edge: rgba(250, 244, 238, 0.09);
  --edge-hi: rgba(250, 244, 238, 0.20);
  --text: #ece9e4;
  --hint: #a49e97;
  --accent: #e08b5a;
  --accent-soft: rgba(224, 139, 90, 0.16);
  --accent-glow: rgba(224, 139, 90, 0.35);
  --good: #9ecb7f;
  --bad: #e0705a;
  --warn: #e8b04c;
  --ease: cubic-bezier(0.25, 0.9, 0.3, 1);
  --page-bg:
    radial-gradient(110% 45% at 50% 0%, rgba(224, 139, 90, 0.10) 0%, transparent 65%),
    linear-gradient(168deg, var(--bg-top) 0%, var(--bg) 40%, #343230 72%, var(--bg-bottom) 100%);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--page-bg);
  background-attachment: fixed;
  color: var(--text);
  min-height: 100vh;
  padding: 16px 12px calc(24px + env(safe-area-inset-bottom));
}

.hidden { display: none !important; }
.no-scroll { overflow: hidden; }

@keyframes rise {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: none; }
}
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}

/* ── home ─────────────────────────────────────────────────── */

.app-header {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 6px 6px 18px;
}
.app-header h1 {
  font-size: 1.3rem;
  font-weight: 800;
  letter-spacing: 0.01em;
  background: linear-gradient(100deg, var(--text) 30%, var(--accent) 90%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.subtitle { color: var(--hint); font-size: 0.85rem; flex: 1; }

.home-cards { display: flex; flex-direction: column; gap: 10px; }

.home-card {
  display: flex;
  align-items: center;
  gap: 14px;
  background: linear-gradient(145deg, var(--card-hi), var(--card));
  border: 1px solid var(--edge);
  border-radius: 18px;
  padding: 16px 14px;
  cursor: pointer;
  transition: transform 0.12s var(--ease), border-color 0.12s;
  animation: rise 0.18s var(--ease) both;
}
.home-card:nth-child(2) { animation-delay: 0.05s; }
.home-card:nth-child(3) { animation-delay: 0.1s; }
.home-card:nth-child(n+4) { animation-delay: 0.15s; }
.home-card:active { transform: scale(0.97); border-color: var(--edge-hi); }

.home-card-icon {
  font-size: 1.7rem;
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-soft);
  border: 1px solid var(--edge);
  border-radius: 15px;
  box-shadow: 0 0 18px var(--accent-glow) inset;
}
.home-card-text { flex: 1; }
.home-card-title { font-weight: 700; font-size: 1rem; }
.home-card-subtitle { color: var(--hint); font-size: 0.8rem; padding-top: 3px; }
.home-card-arrow { color: var(--accent); font-size: 1.4rem; }

/* ── sub-app nav ──────────────────────────────────────────── */

.subapp-nav {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 2px 2px 14px;
  scrollbar-width: none;
}
.subapp-nav::-webkit-scrollbar { display: none; }

.nav-chip {
  flex: 0 0 auto;
  background: var(--card);
  border: 1px solid var(--edge);
  color: var(--hint);
  border-radius: 13px;
  padding: 9px 14px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.12s, color 0.12s, border-color 0.12s, box-shadow 0.12s;
}
.nav-chip.active {
  background: linear-gradient(135deg, var(--accent), #c96f45);
  border-color: transparent;
  color: #241a14;
  box-shadow: 0 2px 14px var(--accent-glow);
}
.nav-home { font-size: 1rem; padding: 9px 12px; }

/* ── shared toolbar ───────────────────────────────────────── */

.subapp-view { animation: rise 0.16s var(--ease) both; }

.view-toolbar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 4px 12px;
}
.toolbar-note { color: var(--hint); font-size: 0.8rem; flex: 1; }

.live-badge { color: var(--good); font-weight: 700; }
.live-badge::before {
  content: "";
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--good);
  margin-right: 5px;
  box-shadow: 0 0 8px var(--good);
  animation: blink 1.1s ease-in-out infinite;
}
@keyframes blink { 50% { opacity: 0.45; } }

.refresh {
  background: var(--card);
  border: 1px solid var(--edge);
  color: var(--accent);
  border-radius: 50%;
  width: 34px;
  height: 34px;
  font-size: 1.1rem;
  line-height: 1;
  cursor: pointer;
  transition: border-color 0.12s, box-shadow 0.12s;
}
.refresh:active { border-color: var(--edge-hi); box-shadow: 0 0 12px var(--accent-glow); }
.refresh:disabled { opacity: 0.5; }
.refresh.spinning { animation: spin 0.7s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ── rates list ───────────────────────────────────────────── */

.rates-list { display: flex; flex-direction: column; gap: 8px; }

.rate-card {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--card);
  border: 1px solid var(--edge);
  border-radius: 15px;
  padding: 12px 14px;
  transition: transform 0.1s var(--ease), border-color 0.12s;
  animation: rise 0.16s var(--ease) both;
}
.rate-card:nth-child(2) { animation-delay: 0.02s; }
.rate-card:nth-child(3) { animation-delay: 0.04s; }
.rate-card:nth-child(4) { animation-delay: 0.06s; }
.rate-card:nth-child(5) { animation-delay: 0.08s; }
.rate-card:nth-child(6) { animation-delay: 0.1s; }
.rate-card:nth-child(n+7) { animation-delay: 0.12s; }
.rate-card:active { transform: scale(0.98); }
.rate-card.favorite {
  border-color: var(--accent-glow);
  background: linear-gradient(145deg, var(--card-hi), var(--card));
  box-shadow: 0 2px 16px rgba(224, 139, 90, 0.10);
}

.pair {
  font-weight: 700;
  font-size: 1rem;
  flex: 1;
  display: flex;
  align-items: center;
  gap: 8px;
}
.pin { font-size: 0.8rem; }

/* 24h change, judged from the owner's side (green = pays off) */
.delta {
  font-size: 0.7rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  padding: 2px 6px;
  border-radius: 7px;
  letter-spacing: 0.01em;
}
.delta.good { color: var(--good); background: rgba(158, 203, 127, 0.14); }
.delta.bad { color: var(--bad); background: rgba(224, 112, 90, 0.14); }
.delta.flat { color: var(--hint); background: rgba(255, 255, 255, 0.06); }

.prices { display: flex; gap: 14px; text-align: right; }
.price { display: flex; flex-direction: column; }
.price .label { font-size: 0.65rem; color: var(--hint); text-transform: uppercase; letter-spacing: 0.05em; }
.price .value { font-variant-numeric: tabular-nums; font-weight: 700; }

.star {
  background: none;
  border: none;
  font-size: 1.25rem;
  cursor: pointer;
  padding: 4px;
  opacity: 0.3;
  filter: grayscale(1);
  transition: opacity 0.12s, filter 0.12s, transform 0.12s var(--ease);
}
.star.on { opacity: 1; filter: none; }
.star:active { transform: scale(1.25); }

.loader { text-align: center; color: var(--hint); padding: 40px 0; }

.section-label {
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  padding: 12px 6px 2px;
}

/* ── calculator ───────────────────────────────────────────── */

.segmented {
  display: flex;
  gap: 5px;
  background: var(--card);
  border: 1px solid var(--edge);
  border-radius: 14px;
  padding: 4px;
  margin-bottom: 12px;
}
.seg-btn {
  flex: 1;
  background: none;
  border: none;
  color: var(--hint);
  border-radius: 10px;
  padding: 9px 6px;
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.12s, color 0.12s, box-shadow 0.12s;
}
.seg-btn.active {
  background: linear-gradient(135deg, var(--accent), #c96f45);
  color: #241a14;
  box-shadow: 0 2px 12px var(--accent-glow);
}

.calc-card {
  background: linear-gradient(145deg, var(--card-hi), var(--card));
  border: 1px solid var(--edge);
  border-radius: 16px;
  padding: 14px;
}
.calc-label { color: var(--hint); font-size: 0.78rem; display: block; padding-bottom: 8px; }
.calc-input-row {
  display: flex;
  align-items: center;
  gap: 10px;
  border-bottom: 2px solid var(--edge);
  transition: border-color 0.15s;
}
.calc-input-row:focus-within { border-color: var(--accent); }
.calc-input-row input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  color: var(--text);
  font-size: 1.6rem;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  min-width: 0;
  padding-bottom: 6px;
  caret-color: var(--accent);
}
.calc-cur { color: var(--accent); font-size: 1.2rem; font-weight: 800; }

.calc-pair-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding-top: 14px;
}
.calc-inline-label { color: var(--hint); font-size: 0.78rem; }

.fee-toggle {
  display: flex;
  gap: 16px;
  padding-top: 12px;
  color: var(--hint);
  font-size: 0.8rem;
}
.fee-toggle label { display: flex; align-items: center; gap: 6px; cursor: pointer; }
.fee-toggle input { accent-color: var(--accent); }

/* dropdown */
.dropdown { position: relative; }
.dd-trigger {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(0, 0, 0, 0.18);
  border: 1px solid var(--edge);
  color: var(--text);
  border-radius: 11px;
  padding: 8px 12px;
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  transition: border-color 0.12s, box-shadow 0.12s;
}
.dd-trigger:active { border-color: var(--edge-hi); }
.dd-trigger:disabled { opacity: 0.55; cursor: default; }
.dd-caret { color: var(--accent); font-size: 0.7rem; transition: transform 0.14s var(--ease); }
.dropdown.open .dd-caret { transform: rotate(180deg); }

.dd-panel {
  position: absolute;
  right: 0;
  top: calc(100% + 6px);
  min-width: 190px;
  max-height: 250px;
  overflow-y: auto;
  background: var(--card-hi);
  border: 1px solid var(--edge-hi);
  border-radius: 13px;
  padding: 5px;
  z-index: 20;
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.4);
  transform-origin: top right;
  animation: pop 0.14s var(--ease) both;
}
@keyframes pop {
  from { opacity: 0; transform: scale(0.94) translateY(-4px); }
  to { opacity: 1; transform: none; }
}
.dd-option {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  width: 100%;
  background: none;
  border: none;
  color: var(--text);
  border-radius: 9px;
  padding: 9px 10px;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  text-align: left;
  transition: background 0.1s;
}
.dd-option:active { background: var(--accent-soft); }
.dd-option.selected { background: var(--accent-soft); color: var(--accent); }
.dd-option .dd-rate { color: var(--hint); font-size: 0.78rem; font-variant-numeric: tabular-nums; }
.dd-empty { color: var(--hint); font-size: 0.8rem; padding: 10px; text-align: center; }

.calc-result {
  padding: 14px 4px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  animation: rise 0.14s var(--ease) both;
}
.res-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-size: 0.9rem;
  color: var(--hint);
}
.res-row span:last-child { color: var(--text); font-variant-numeric: tabular-nums; }
.res-row.res-main {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--text);
  border-top: 1px solid var(--edge);
  padding-top: 10px;
  margin-top: 4px;
}
.res-row.res-main span:last-child {
  color: var(--accent);
  font-size: 1.25rem;
  text-shadow: 0 0 18px var(--accent-glow);
}
.res-row.res-dim span:last-child { color: var(--hint); }
.res-hint { color: var(--hint); font-size: 0.85rem; text-align: center; padding: 10px 0; }

/* editable rate */
.rate-editor {
  background: var(--card);
  border: 1px solid var(--edge);
  border-radius: 14px;
  padding: 12px 14px;
  margin-top: 4px;
}
.rate-editor.custom { border-color: var(--accent-glow); }
.rate-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding-bottom: 8px;
}
.rate-head .calc-label { padding: 0; }
.rate-badge {
  color: var(--accent);
  font-size: 0.68rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  animation: pop 0.14s var(--ease) both;
}
.rate-row {
  display: flex;
  align-items: center;
  gap: 10px;
  border-bottom: 2px solid var(--edge);
  transition: border-color 0.15s;
}
.rate-row:focus-within { border-color: var(--accent); }
.rate-row input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  color: var(--text);
  font-size: 1.15rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  min-width: 0;
  padding-bottom: 5px;
  caret-color: var(--accent);
}
.rate-unit { color: var(--hint); font-size: 0.8rem; white-space: nowrap; }
.rate-reset {
  background: var(--accent-soft);
  border: 1px solid var(--edge);
  color: var(--accent);
  border-radius: 9px;
  width: 30px;
  height: 30px;
  font-size: 0.95rem;
  cursor: pointer;
  transition: transform 0.12s var(--ease);
}
.rate-reset:active { transform: rotate(-90deg); }
.rate-foot { color: var(--hint); font-size: 0.75rem; padding-top: 8px; }

/* ── chart overlay ────────────────────────────────────────── */

.chart-view {
  position: fixed;
  inset: 0;
  background: var(--page-bg);
  background-attachment: fixed;
  padding: 16px 12px calc(24px + env(safe-area-inset-bottom));
  transform: translateY(100%);
  transition: transform 0.2s var(--ease);
  z-index: 30;
  overflow-y: auto;
}
.chart-view.open { transform: translateY(0); }

.chart-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 4px 6px 14px;
}
.chart-header h2 { font-size: 1.2rem; font-weight: 800; }
.chart-close {
  background: var(--card);
  border: 1px solid var(--edge);
  color: var(--text);
  border-radius: 50%;
  width: 32px;
  height: 32px;
  font-size: 0.95rem;
  cursor: pointer;
}

.periods { display: flex; gap: 6px; flex-wrap: wrap; padding-bottom: 14px; }
.period-btn {
  background: var(--card);
  border: 1px solid var(--edge);
  color: var(--hint);
  border-radius: 11px;
  padding: 7px 13px;
  font-size: 0.85rem;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.12s, color 0.12s, box-shadow 0.12s;
}
.period-btn.active {
  background: linear-gradient(135deg, var(--accent), #c96f45);
  border-color: transparent;
  color: #241a14;
  box-shadow: 0 2px 12px var(--accent-glow);
}

.chart-canvas-wrap {
  background: linear-gradient(160deg, var(--card-hi), var(--card));
  border: 1px solid var(--edge);
  border-radius: 16px;
  padding: 10px 6px;
}
.chart-legend {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--hint);
  font-size: 0.85rem;
  padding-top: 12px;
}
.legend-row { display: flex; align-items: center; gap: 6px; }

.chart-delta {
  font-size: 0.85rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  padding: 5px 12px;
  border-radius: 10px;
  animation: pop 0.14s var(--ease) both;
}
.chart-delta.good { color: var(--good); background: rgba(158, 203, 127, 0.14); }
.chart-delta.bad { color: var(--bad); background: rgba(224, 112, 90, 0.14); }
.chart-delta.flat { color: var(--hint); background: rgba(255, 255, 255, 0.06); }
.dot {
  display: inline-block;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  vertical-align: middle;
  box-shadow: 0 0 8px currentColor;
}