/* NV Exchange — engraved banknote: forest green, cream paper, guilloche lines. Fonts: IBM Plex (SIL OFL). */
@font-face { font-family: 'Plex Mono'; src: url('./fonts/ibm-plex-mono-latin-400-normal.woff2') format('woff2'); font-weight: 400; font-display: swap; }
@font-face { font-family: 'Plex Condensed'; src: url('./fonts/ibm-plex-sans-condensed-latin-500-normal.woff2') format('woff2'); font-weight: 500; font-display: swap; }
@font-face { font-family: 'Plex Condensed'; src: url('./fonts/ibm-plex-sans-condensed-latin-600-normal.woff2') format('woff2'); font-weight: 600; font-display: swap; }
:root {
  --green: #0d2620; --green-2: #16392f; --cream: #f3ecd9; --cream-2: #e6dcc2; --ink: #17302a; --muted: #5e6f66;
  --gold: #b8935a; --up: #2f7a52; --down: #a3402f; --line: rgba(23, 48, 42, 0.16);
  --serif: 'Iowan Old Style', 'Palatino Linotype', Palatino, Georgia, serif;
  --sans: 'Plex Condensed', 'Arial Narrow', system-ui, sans-serif; --mono: 'Plex Mono', ui-monospace, Consolas, monospace;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
body {
  margin: 0; min-height: 100vh; font: 500 16px/1.45 var(--sans); color: var(--ink);
  background: radial-gradient(120% 80% at 50% 0%, var(--green-2), var(--green) 70%) fixed;
}
button, input, select { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--gold); outline-offset: 2px; }
a { color: var(--green-2); }
.note {
  width: min(820px, calc(100% - 32px)); margin: clamp(16px, 4vw, 44px) auto; padding: clamp(18px, 4vw, 36px);
  border-radius: 18px; position: relative; overflow: hidden;
  background:
    repeating-radial-gradient(circle at 100% 0%, transparent 0 9px, rgba(23, 48, 42, 0.045) 9px 10px),
    repeating-radial-gradient(circle at 0% 100%, transparent 0 11px, rgba(184, 147, 90, 0.06) 11px 12px),
    linear-gradient(var(--cream), var(--cream-2));
  box-shadow: 0 30px 60px -25px rgba(0, 0, 0, 0.7), inset 0 0 0 1px rgba(255, 255, 255, 0.5), inset 0 0 0 8px rgba(184, 147, 90, 0.18);
  display: grid; gap: 22px;
}
.brand { margin: 0; font-size: 12px; letter-spacing: 0.24em; text-transform: uppercase; color: var(--gold); }
.brand span { color: var(--ink); font-weight: 600; }
h1 { margin: 2px 0 0; font: 600 clamp(28px, 5vw, 40px)/1.05 var(--serif); }
.sub { margin: 4px 0 0; color: var(--muted); font-size: 14px; }
h2 { margin: 0; font-size: 12px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--gold); }

.convert { display: grid; grid-template-columns: 1.3fr 1fr auto 1fr; gap: 12px; align-items: end; }
.field { display: grid; gap: 4px; min-width: 0; }
.field label { font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--muted); }
.field input, .field select {
  width: 100%; min-height: 50px; border-radius: 12px; border: 1px solid var(--line); background: rgba(255, 255, 255, 0.6); padding: 8px 12px;
}
.field input { font: 400 24px var(--mono); }
.field select { font-weight: 600; }
.swap {
  min-height: 50px; width: 50px; border-radius: 50%; border: 1px solid rgba(184, 147, 90, 0.6); background: var(--green); color: var(--cream);
  font-size: 22px; cursor: pointer; box-shadow: 0 2px 0 rgba(0, 0, 0, 0.35);
}
.swap:hover { background: var(--green-2); }

.result { padding: 18px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.result p { margin: 0; }
.result__from { color: var(--muted); font: 400 16px var(--mono); }
.result__to { font: 600 clamp(32px, 7vw, 54px)/1.1 var(--serif); letter-spacing: -0.01em; overflow-wrap: anywhere; }
.result__rate { margin-top: 6px !important; font: 400 14px var(--mono); color: var(--muted); }
.notice { margin-top: 10px !important; padding: 8px 12px; border-radius: 10px; background: rgba(163, 64, 47, 0.1); color: var(--down); font-size: 14px; }
.notice button { border: 0; background: none; text-decoration: underline; cursor: pointer; color: inherit; margin-left: 6px; }

.trend__head { display: flex; justify-content: space-between; align-items: center; gap: 10px; margin-bottom: 8px; }
.ranges { display: inline-flex; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
.ranges button { border: 0; background: transparent; padding: 5px 12px; cursor: pointer; font-weight: 600; color: var(--muted); }
.ranges button[aria-pressed='true'] { background: var(--green); color: var(--cream); }
.chart { width: 100%; height: 160px; display: block; border-radius: 12px; background: rgba(255, 255, 255, 0.35); }
.chart__line { fill: none; stroke: var(--green); stroke-width: 2; vector-effect: non-scaling-stroke; }
.stats { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 8px; margin: 10px 0 0; }
.stats div { padding: 8px 10px; border-radius: 10px; background: rgba(255, 255, 255, 0.45); }
.stats dt { font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); }
.stats dd { margin: 0; font: 400 15px var(--mono); }
.up { color: var(--up); } .down { color: var(--down); }

.board__list { list-style: none; margin: 10px 0 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 8px; }
.board__list button {
  width: 100%; text-align: left; border: 1px solid var(--line); border-radius: 12px; background: rgba(255, 255, 255, 0.45); padding: 10px 12px; cursor: pointer;
}
.board__list button:hover { border-color: rgba(184, 147, 90, 0.7); }
.board__list b { display: block; font-size: 12px; letter-spacing: 0.12em; color: var(--muted); }
.board__list span { font: 400 16px var(--mono); overflow-wrap: anywhere; }
.foot { font-size: 12px; color: var(--muted); border-top: 1px solid var(--line); padding-top: 12px; }

@media (max-width: 640px) {
  .convert { grid-template-columns: 1fr auto 1fr; }
  .field--amount { grid-column: 1 / -1; }
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}