/* CCYConverter — 'Engraver's Desk' design system */
:root{
  --paper:#F7F7F2; --ink:#0F251D; --ink-soft:#3D5249; --hairline:#D9DAD0;
  --card:#FFFFFF; --note:#1D5C45; --note-deep:#153F30; --gold:#A9853B;
  --rise:#1E7F4F; --fall:#B5402C; --field:#F1F2EA; --tick:#EDEEE5;
  --focus:#1D5C45;
}
[data-theme="dark"]{
  --paper:#0F251D; --ink:#EDEFE8; --ink-soft:#A7B5AC; --hairline:#25423637;
  --card:#132E24; --note:#4FA37F; --note-deep:#7FC3A4; --gold:#CBA55A;
  --rise:#57B486; --fall:#D9765F; --field:#0C1F18; --tick:#0C1F18;
  --hairline:#274A3B; --focus:#7FC3A4;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:'Public Sans',system-ui,sans-serif;
  background:var(--paper); color:var(--ink);
  line-height:1.55; -webkit-font-smoothing:antialiased;
  transition:background .25s ease,color .25s ease;
}
.mono{font-family:'IBM Plex Mono',ui-monospace,monospace;font-variant-numeric:tabular-nums}
.wrap{max-width:1120px;margin:0 auto;padding:0 24px}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer}
:focus-visible{outline:2px solid var(--focus);outline-offset:2px;border-radius:4px}

/* ---------- header ---------- */
header{border-bottom:1px solid var(--hairline)}
.hd{display:flex;align-items:center;gap:32px;height:64px}
.brand{font-family:'Fraunces',serif;font-weight:500;font-size:21px;letter-spacing:.01em;display:flex;align-items:center;gap:10px}
.brand svg{display:block}
nav{display:flex;gap:24px;font-size:14.5px;color:var(--ink-soft)}
nav a:hover{color:var(--ink)}
.hd-right{margin-left:auto;display:flex;align-items:center;gap:14px}
.theme-btn{width:36px;height:36px;border:1px solid var(--hairline);border-radius:50%;display:grid;place-items:center}
.theme-btn:hover{border-color:var(--note)}
.btn-note{background:var(--note);color:#fff;padding:9px 18px;border-radius:10px;font-weight:600;font-size:14px}
[data-theme="dark"] .btn-note{color:#0F251D}
.btn-note:hover{filter:brightness(1.08)}
@media(max-width:760px){nav{display:none}}

/* ---------- ticker ---------- */
.ticker{border-bottom:1px solid var(--hairline);background:var(--tick);overflow:hidden;white-space:nowrap}
.ticker-track{display:inline-flex;gap:40px;padding:9px 0;animation:tick 55s linear infinite;will-change:transform}
.ticker:hover .ticker-track{animation-play-state:paused}
@keyframes tick{from{transform:translateX(0)}to{transform:translateX(-50%)}}
.tk{font-size:12.5px;color:var(--ink-soft)}
.tk b{color:var(--ink);font-weight:500}
.up{color:var(--rise)} .dn{color:var(--fall)}
@media(prefers-reduced-motion:reduce){
  .ticker-track{animation:none}
  *{transition:none!important}
}

/* ---------- hero ---------- */
.hero{position:relative;padding:64px 0 72px;overflow:hidden}
#guilloche{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;opacity:.5}
.hero .wrap{position:relative}
.eyebrow{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--gold);font-weight:600;margin-bottom:14px}
h1{font-family:'Fraunces',serif;font-weight:340;font-size:clamp(34px,5vw,54px);line-height:1.08;letter-spacing:-.01em;max-width:640px}
.hero p.lede{margin:16px 0 36px;color:var(--ink-soft);max-width:520px;font-size:16.5px}

/* converter card */
.conv{background:var(--card);border:1px solid var(--hairline);border-radius:16px;padding:28px;max-width:860px;box-shadow:0 1px 2px rgba(15,37,29,.05)}
.conv-grid{display:grid;grid-template-columns:1fr auto 1fr;gap:18px;align-items:end}
.f-label{display:block;font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-soft);font-weight:600;margin-bottom:8px}
.amount-in{width:100%;background:var(--field);border:1px solid var(--hairline);border-radius:12px;
  padding:14px 16px;font-family:'IBM Plex Mono',monospace;font-variant-numeric:tabular-nums;
  font-size:26px;color:var(--ink)}
.amount-in:focus{outline:2px solid var(--focus);outline-offset:-1px}
.swap{width:46px;height:46px;border:1px solid var(--hairline);border-radius:50%;display:grid;place-items:center;background:var(--card);transition:transform .3s ease}
.swap:hover{border-color:var(--note);transform:rotate(180deg)}
/* combobox */
.combo{position:relative}
.combo-btn{width:100%;display:flex;align-items:center;gap:10px;background:var(--field);border:1px solid var(--hairline);border-radius:12px;padding:14px 16px;font-size:16px;text-align:left}
.combo-btn .flag{font-size:20px}
.combo-btn .code{font-family:'IBM Plex Mono',monospace;font-weight:500}
.combo-btn .nm{color:var(--ink-soft);font-size:13.5px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.combo-btn::after{content:"";margin-left:auto;border:5px solid transparent;border-top-color:var(--ink-soft);translate:0 3px}
.combo-pop{position:absolute;z-index:30;top:calc(100% + 6px);left:0;right:0;background:var(--card);border:1px solid var(--hairline);border-radius:12px;box-shadow:0 12px 32px rgba(15,37,29,.14);display:none;overflow:hidden}
.combo-pop.open{display:block}
.combo-search{width:100%;border:none;border-bottom:1px solid var(--hairline);background:var(--card);padding:12px 14px;font:inherit;color:var(--ink)}
.combo-search:focus{outline:none}
.combo-list{max-height:264px;overflow:auto;list-style:none}
.combo-list li{display:flex;gap:10px;align-items:center;padding:10px 14px;cursor:pointer;font-size:14.5px}
.combo-list li:hover,.combo-list li[aria-selected="true"]{background:var(--field)}
.combo-list .code{font-family:'IBM Plex Mono',monospace;width:44px;font-weight:500}
.combo-list .nm{color:var(--ink-soft)}
.combo-list .grp{padding:8px 14px 4px;font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--gold);font-weight:600;cursor:default}
.combo-list .grp:hover{background:none}

.result{margin-top:26px;padding-top:24px;border-top:1px solid var(--hairline)}
.result .from-line{font-size:15px;color:var(--ink-soft)}
.result .big{font-family:'IBM Plex Mono',monospace;font-variant-numeric:tabular-nums;
  font-size:clamp(34px,4.6vw,52px);font-weight:500;color:var(--gold);line-height:1.15;margin:4px 0 10px;word-break:break-all}
.result .big small{font-size:.5em;color:var(--ink-soft);font-weight:400}
.meta-line{display:flex;flex-wrap:wrap;gap:8px 22px;font-size:13px;color:var(--ink-soft)}
.meta-line .mono{color:var(--ink)}
.dot{width:7px;height:7px;border-radius:50%;background:var(--rise);display:inline-block;margin-right:6px;animation:pulse 2s infinite}
@keyframes pulse{50%{opacity:.35}}
@media(max-width:720px){
  .conv-grid{grid-template-columns:1fr;gap:14px}
  .swap{justify-self:center;transform:rotate(90deg)}
  .swap:hover{transform:rotate(270deg)}
  .conv-grid div[style*="height:76px"]{display:none}
}

/* ---------- sections ---------- */
section{padding:64px 0;border-top:1px solid var(--hairline)}
.sec-head{display:flex;align-items:baseline;justify-content:space-between;gap:20px;margin-bottom:30px}
h2{font-family:'Fraunces',serif;font-weight:340;font-size:clamp(24px,3vw,32px);letter-spacing:-.01em}
.sec-head a{font-size:14px;color:var(--note);font-weight:600}
.sec-head a:hover{text-decoration:underline}

/* chart */
.chart-card{background:var(--card);border:1px solid var(--hairline);border-radius:16px;padding:24px}
.chart-top{display:flex;flex-wrap:wrap;align-items:center;gap:12px 20px;margin-bottom:8px}
.pair-tabs{display:flex;gap:8px;flex-wrap:wrap}
.pair-tabs button{padding:7px 13px;border:1px solid var(--hairline);border-radius:99px;font-size:13px;font-family:'IBM Plex Mono',monospace}
.pair-tabs button[aria-pressed="true"]{background:var(--note);border-color:var(--note);color:#fff}
[data-theme="dark"] .pair-tabs button[aria-pressed="true"]{color:#0F251D}
.chart-stats{margin-left:auto;display:flex;gap:22px;font-size:13px;color:var(--ink-soft)}
.chart-stats b{display:block;font-family:'IBM Plex Mono',monospace;font-size:15px;color:var(--ink);font-weight:500}
canvas{width:100%;height:280px;display:block}

/* popular pairs */
.pairs-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(245px,1fr));gap:16px}
.pair-card{background:var(--card);border:1px solid var(--hairline);border-radius:14px;padding:18px;transition:border-color .15s ease;cursor:pointer}
.pair-card:hover{border-color:var(--note)}
.pair-card .pc-top{display:flex;justify-content:space-between;align-items:center;font-size:13px;color:var(--ink-soft)}
.pair-card .pc-pair{font-family:'IBM Plex Mono',monospace;font-weight:500;color:var(--ink);font-size:14px}
.pair-card .pc-rate{font-family:'IBM Plex Mono',monospace;font-variant-numeric:tabular-nums;font-size:22px;font-weight:500;margin:10px 0 2px}
.pair-card .pc-chg{font-size:12.5px;font-family:'IBM Plex Mono',monospace}
.pair-card svg{display:block;width:100%;height:36px;margin-top:10px}

/* comparison table */
.tbl{width:100%;border-collapse:collapse;background:var(--card);border:1px solid var(--hairline);border-radius:16px;overflow:hidden}
.tbl-wrap{border:1px solid var(--hairline);border-radius:16px;overflow:auto}
.tbl th,.tbl td{padding:13px 18px;text-align:left;font-size:14px;border-bottom:1px solid var(--hairline)}
.tbl th{font-size:11.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-soft);font-weight:600;background:var(--field)}
.tbl tr:last-child td{border-bottom:none}
.tbl td.num{font-family:'IBM Plex Mono',monospace;font-variant-numeric:tabular-nums;text-align:right}
.tbl th.num{text-align:right}
.badge{font-size:10.5px;letter-spacing:.08em;text-transform:uppercase;border:1px solid var(--hairline);border-radius:99px;padding:2px 8px;color:var(--ink-soft);margin-left:8px}

/* footer */
footer{border-top:1px solid var(--hairline);padding:40px 0 48px;color:var(--ink-soft);font-size:13.5px}
.ft{display:flex;flex-wrap:wrap;gap:16px 32px;align-items:center}
.ft nav{display:flex;gap:22px;font-size:13.5px}
.ft .brand{font-size:16px}
.ft-note{margin-top:14px;max-width:640px;font-size:12.5px}