:root {
  --bg: #f5f6fa;
  --surface: #ffffff;
  --surface-2: #eceef4;
  --ink: #12141c;
  --ink-muted: #5b6472;
  --accent: #1b3a8a;
  --hairline: #dadfea;
  --focus: #1b3a8a;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b0e14;
    --surface: #12151f;
    --surface-2: #171b27;
    --ink: #e9ebf2;
    --ink-muted: #8b93a7;
    --accent: #7c9cff;
    --hairline: #232838;
    --focus: #7c9cff;
  }
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
}

body {
  background: var(--bg);
  color: var(--ink);
  font-family: "IBM Plex Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  display: flex;
  flex-direction: column;
  align-items: center;
  -webkit-tap-highlight-color: transparent;
}

/* the app frame: card pinned top, footer pinned bottom, only the
   currency list scrolls in between */
.page {
  width: 100%;
  max-width: 420px;
  height: 100dvh;
  max-height: 780px;
  min-height: 480px;
  padding: 24px 16px 16px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.wordmark {
  flex-shrink: 0;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

/* ---- swipe stage ---- */

.stage {
  flex-shrink: 0;
  position: relative;
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: 20px;
  padding: 38px 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  touch-action: none;
  cursor: grab;
  user-select: none;
}
.stage:active {
  cursor: grabbing;
}
.stage:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
}

.hero-viewport {
  position: relative;
  width: 100%;
  min-height: 104px;
  overflow: hidden;
}

.hero {
  position: absolute;
  inset: 0;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.amount-figure {
  font-family: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  line-height: 1;
  letter-spacing: -0.01em;
  white-space: nowrap;
}

.currency-line {
  display: flex;
  align-items: baseline;
  gap: 7px;
  white-space: nowrap;
}

.currency-code {
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--accent);
}

.currency-sep {
  color: var(--hairline);
  font-size: 0.8rem;
}

.currency-name {
  font-size: 0.78rem;
  color: var(--ink-muted);
}

.chev {
  position: absolute;
  color: var(--accent);
  font-family: "IBM Plex Mono", monospace;
  font-size: 1.1rem;
  opacity: 0;
  pointer-events: none;
  animation: hintPulse 2.6s ease-in-out 0.5s 1;
  z-index: 2;
}
.chev-left {
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  animation-name: hintPulseX;
}
.chev-right {
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  animation-name: hintPulseX;
  animation-direction: reverse;
}
.chev-up {
  top: 10px;
  left: 50%;
  transform: translateX(-50%);
}
.chev-down {
  bottom: 10px;
  left: 50%;
  transform: translateX(-50%);
}

@keyframes hintPulse {
  0% {
    opacity: 0;
  }
  35% {
    opacity: 0.85;
  }
  70% {
    opacity: 0.85;
  }
  100% {
    opacity: 0;
  }
}
@keyframes hintPulseX {
  0% {
    opacity: 0;
    transform: translateY(-50%) translateX(0);
  }
  35% {
    opacity: 0.85;
    transform: translateY(-50%) translateX(-3px);
  }
  70% {
    opacity: 0.85;
    transform: translateY(-50%) translateX(-3px);
  }
  100% {
    opacity: 0;
    transform: translateY(-50%) translateX(0);
  }
}
.chev-up,
.chev-down {
  animation-name: hintPulse;
}

/* ---- rates table (the only part of the app that scrolls) ---- */

.page-scroll {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

table.rates {
  width: 100%;
  border-collapse: collapse;
}
table.rates thead th {
  position: sticky;
  top: 0;
  background: var(--bg);
  text-align: right;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-muted);
  padding: 0 0 8px;
  border-bottom: 1px solid var(--hairline);
}
table.rates thead th:first-child {
  text-align: left;
}

table.rates td {
  padding: 12px 0;
  border-bottom: 1px solid var(--hairline);
  font-variant-numeric: tabular-nums;
  text-align: right;
  vertical-align: top;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.95rem;
}
table.rates tr:last-child td {
  border-bottom: none;
}
table.rates tbody tr {
  cursor: pointer;
}
table.rates tbody tr:active {
  background: var(--surface-2);
}
table.rates td:first-child {
  text-align: left;
  font-family: "IBM Plex Sans", sans-serif;
}
.share-link {
  display: block;
  color: inherit;
  text-decoration: none;
}
.cur-code {
  font-weight: 600;
  letter-spacing: 0.03em;
}
.cur-name {
  display: block;
  font-size: 0.72rem;
  color: var(--ink-muted);
  font-weight: 400;
}
.col-buying {
  color: var(--ink);
  font-weight: 600;
}
.cost-value {
  font-weight: 600;
  color: var(--ink);
}
.cost-of {
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 0.68rem;
  font-weight: 400;
  color: var(--ink-muted);
  margin-top: 2px;
}

footer {
  flex-shrink: 0;
  font-size: 0.74rem;
  color: var(--ink-muted);
  text-align: center;
  line-height: 1.5;
}
footer a {
  color: var(--ink-muted);
}

/* ---- shared-link snapshot: a frozen fact, not the live tool ---- */

#liveView {
  display: contents;
}
#liveView[hidden] {
  display: none;
}

.snapshot {
  flex-shrink: 0;
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: 20px;
  padding: 40px 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  text-align: center;
}
.snapshot[hidden] {
  display: none;
}
.snapshot .pair {
  font-family: "IBM Plex Mono", monospace;
  font-weight: 600;
  font-size: 1.15rem;
  font-variant-numeric: tabular-nums;
  line-height: 1.4;
}
.snapshot .as-of {
  font-size: 0.8rem;
  color: var(--ink-muted);
}
.snapshot .live-link {
  margin-top: 10px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 11px 20px;
  border-radius: 999px;
  background: var(--accent);
  color: var(--surface);
  font-size: 0.85rem;
  font-weight: 600;
  text-decoration: none;
}
.snapshot .live-link:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  .chev {
    animation: none !important;
  }
}