/* Layout: one feed of request cards under a slim header; giving, asking and
   your own requests open in a side sheet (a bottom sheet on phones).
   System fonts only, so visitors' browsers never call a third party. */
:root {
  --bg: #f3f6f5;
  --surface: #ffffff;
  --ink: #0e1b1a;
  --muted: #566866;
  --line: #d9e2e0;
  --accent: #087f5e;
  --accent-ink: #ffffff;
  --accent-soft: #dff3ec;
  --track: #e4ebe9;
  --warn: #a8480f;
  --warn-soft: #fbeadf;
  --scrim: rgba(8, 20, 18, .45);
  --display: "Avenir Next", "Segoe UI Variable Display", "Segoe UI", Roboto, system-ui, sans-serif;
  --body: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1413; --surface: #121e1d; --ink: #e6efed; --muted: #93a6a3; --line: #243533;
    --accent: #2fd6a0; --accent-ink: #062019; --accent-soft: #143a30; --track: #1d2c2a;
    --warn: #f0975e; --warn-soft: #3a2416; --scrim: rgba(0, 0, 0, .6); color-scheme: dark;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--ink); font: 15px/1.55 var(--body);
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
}
.wrap { max-width: 1080px; margin: 0 auto; }
button, input, select, textarea { font: inherit; color: inherit; }
a { color: var(--accent); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
[hidden] { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

header.top {
  position: sticky; top: 0; z-index: 5; background: var(--bg);
  display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap;
  padding-block: 12px; border-bottom: 1px solid var(--line);
}
.brand { font: 800 22px/1 var(--display); letter-spacing: -.02em; display: flex; align-items: center; gap: 10px; }
.brand b { color: var(--accent); font-weight: inherit; }
.chip-info { font: 600 11px/1 var(--mono); letter-spacing: .04em; color: var(--muted); border: 1px solid var(--line); border-radius: 99px; padding: 5px 8px; white-space: nowrap; font-variant-numeric: tabular-nums; }
.top-actions { display: flex; gap: 8px; align-items: center; }
.btn { border: 0; border-radius: 10px; padding: 10px 16px; font-weight: 600; cursor: pointer; background: var(--accent); color: var(--accent-ink); text-decoration: none; display: inline-flex; align-items: center; justify-content: center; gap: 6px; }
.btn:hover { filter: brightness(1.06); }
.btn.ghost { background: transparent; color: var(--ink); border: 1px solid var(--line); }
.btn:disabled { opacity: .5; cursor: not-allowed; }

.testnet { margin-top: 12px; background: var(--warn-soft); color: var(--ink); border-radius: 10px; padding: 10px 14px; font-size: 14px; }
.testnet b { color: var(--warn); }

.hero { padding-block: 32px 16px; display: grid; gap: 10px; max-width: 660px; }
.hero h1 { font: 800 clamp(30px, 5vw, 44px)/1.06 var(--display); letter-spacing: -.03em; margin: 0; text-wrap: balance; }
.hero p { margin: 0; color: var(--muted); font-size: 16px; }

.chips { display: flex; gap: 8px; flex-wrap: wrap; padding-block: 8px 18px; }
.chip { border: 1px solid var(--line); background: var(--surface); border-radius: 99px; padding: 6px 12px; cursor: pointer; font-size: 13px; }
.chip[aria-pressed="true"] { background: var(--ink); color: var(--bg); border-color: var(--ink); }

.feed { display: grid; grid-template-columns: repeat(auto-fill, minmax(290px, 1fr)); gap: 14px; padding-bottom: 48px; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 18px; display: flex; flex-direction: column; gap: 10px; cursor: pointer; text-align: left; min-width: 0; }
.card:hover { border-color: var(--accent); }
.card-top { display: flex; justify-content: space-between; gap: 8px; align-items: center; }
.cat { font: 600 11px/1 var(--mono); text-transform: uppercase; letter-spacing: .08em; color: var(--accent); }
.card h3 { font: 700 19px/1.2 var(--display); margin: 0; text-wrap: balance; overflow-wrap: anywhere; }
.card p { margin: 0; color: var(--muted); display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; overflow-wrap: anywhere; }
.bar { height: 8px; background: var(--track); border-radius: 99px; overflow: hidden; }
.bar i { display: block; height: 100%; background: var(--accent); border-radius: 99px; transition: width .4s ease; }
.nums { display: flex; justify-content: space-between; gap: 8px; flex-wrap: wrap; font: 13px/1.3 var(--mono); font-variant-numeric: tabular-nums; color: var(--muted); }
.nums b { color: var(--ink); font-weight: 600; }
.badge { font: 600 10px/1 var(--mono); text-transform: uppercase; letter-spacing: .06em; border-radius: 4px; padding: 4px 6px; white-space: nowrap; }
.badge.ok { color: var(--accent); background: var(--accent-soft); }
.badge.warn { color: var(--warn); background: var(--warn-soft); }

.empty { grid-column: 1 / -1; border: 1px dashed var(--line); border-radius: 14px; padding: 40px 20px; text-align: center; color: var(--muted); display: grid; gap: 12px; justify-items: center; }
.empty strong { color: var(--ink); font: 700 20px/1.2 var(--display); }

.info { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 28px; padding-block: 28px 56px; border-top: 1px solid var(--line); }
.info h2 { font: 700 18px/1.2 var(--display); margin: 0 0 10px; }
.info ul { margin: 0; padding-left: 18px; display: grid; gap: 6px; color: var(--muted); font-size: 14px; }
.info li b { color: var(--ink); font-weight: 600; }
footer { color: var(--muted); font-size: 13px; padding-block: 0 32px; }

/* sheet */
.scrim { position: fixed; inset: 0; background: var(--scrim); z-index: 20; }
.sheet {
  position: fixed; z-index: 21; background: var(--surface); overflow-y: auto; overscroll-behavior: contain;
  top: 0; right: 0; bottom: 0; width: min(500px, 100%);
  padding: calc(20px + env(safe-area-inset-top, 0px)) max(20px, env(safe-area-inset-right, 0px)) calc(24px + env(safe-area-inset-bottom, 0px)) 20px;
  display: flex; flex-direction: column; gap: 16px; border-left: 1px solid var(--line);
}
@media (max-width: 600px) {
  .sheet { top: auto; left: 0; width: 100%; max-height: 92%; border-radius: 18px 18px 0 0; border-left: 0; border-top: 1px solid var(--line); padding-left: max(20px, env(safe-area-inset-left, 0px)); }
}
.sheet-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; }
.sheet h2 { font: 800 26px/1.1 var(--display); margin: 6px 0 0; letter-spacing: -.02em; text-wrap: balance; overflow-wrap: anywhere; }
.x { background: none; border: 1px solid var(--line); border-radius: 8px; width: 34px; height: 34px; cursor: pointer; flex: none; }
.story { white-space: pre-wrap; margin: 0; overflow-wrap: anywhere; }
.label { font: 600 11px/1 var(--mono); text-transform: uppercase; letter-spacing: .08em; color: var(--muted); }
.trust { display: grid; gap: 6px; background: var(--bg); border-radius: 12px; padding: 12px 14px; font-size: 14px; }
.trust div { display: flex; gap: 8px; align-items: baseline; }
.trust .dot { width: 8px; height: 8px; border-radius: 50%; flex: none; background: var(--accent); transform: translateY(-1px); }
.trust .dot.warn { background: var(--warn); }
.amts { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; }
.amt { border: 1px solid var(--line); background: var(--bg); border-radius: 10px; padding: 9px 4px; cursor: pointer; display: grid; gap: 3px; }
.amt b { font: 600 15px/1 var(--mono); }
.amt small { font: 11px/1 var(--mono); color: var(--muted); }
.amt[aria-pressed="true"] { border-color: var(--accent); background: var(--accent-soft); }
.pay { display: grid; grid-template-columns: auto 1fr; gap: 16px; align-items: center; background: var(--bg); border-radius: 12px; padding: 14px; }
@media (max-width: 420px) { .pay { grid-template-columns: 1fr; justify-items: center; } }
.qr { background: #fff; padding: 8px; border-radius: 8px; width: 176px; height: 176px; }
.qr img, .qr canvas { width: 160px !important; height: 160px !important; }
.pay-info { display: grid; gap: 8px; min-width: 0; }
.big { font: 700 22px/1.1 var(--mono); font-variant-numeric: tabular-nums; }
.addr { font: 12px/1.4 var(--mono); word-break: break-all; }
.row { display: flex; gap: 8px; flex-wrap: wrap; }
.small { font-size: 13px; color: var(--muted); margin: 0; }
.status { display: flex; gap: 10px; align-items: center; font-weight: 600; }
.spin { width: 14px; height: 14px; border: 2px solid var(--line); border-top-color: var(--accent); border-radius: 50%; animation: spin 1s linear infinite; flex: none; }
@keyframes spin { to { transform: rotate(360deg); } }
form.stack { display: grid; gap: 12px; }
.field { display: grid; gap: 6px; }
.field input, .field select, .field textarea { width: 100%; border: 1px solid var(--line); background: var(--bg); border-radius: 10px; padding: 10px 12px; min-width: 0; }
.field textarea { min-height: 130px; resize: vertical; }
.hint { font: 12px/1.3 var(--mono); color: var(--muted); }
.err { color: var(--warn); font-size: 14px; margin: 0; }
.notice { background: var(--accent-soft); border-radius: 10px; padding: 12px 14px; font-size: 14px; margin: 0; }
.notice.warn { background: var(--warn-soft); }
.key { font: 600 14px/1.4 var(--mono); word-break: break-all; background: var(--bg); border: 1px dashed var(--line); border-radius: 8px; padding: 10px 12px; user-select: all; }
.gifts { list-style: none; margin: 0; padding: 0; display: grid; }
.gifts li { display: flex; justify-content: space-between; gap: 10px; font: 13px/1.4 var(--mono); border-bottom: 1px solid var(--line); padding-block: 7px; }
.mine { display: grid; gap: 10px; }
.mine-item { border: 1px solid var(--line); border-radius: 12px; padding: 12px; display: grid; gap: 8px; }
.toast { position: fixed; left: 50%; transform: translateX(-50%); bottom: calc(20px + env(safe-area-inset-bottom, 0px)); background: var(--ink); color: var(--bg); padding: 10px 16px; border-radius: 10px; z-index: 30; font-weight: 500; max-width: calc(100% - 32px); }

/* admin */
.admin-item { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 16px; display: grid; gap: 10px; }
.admin-list { display: grid; gap: 14px; padding-bottom: 48px; }
.tabs { display: flex; gap: 8px; flex-wrap: wrap; padding-block: 16px; }

@media (prefers-reduced-motion: reduce) { .bar i { transition: none; } .spin { animation: none; } }