:root {
  --ink: #16202c;
  --ink-soft: #5b6b7d;
  --line: #e2e8f0;
  --surface: #ffffff;
  --canvas: #f4f7fa;
  --brand: #1650a8;
  --brand-strong: #0f3d80;
  --brand-soft: rgba(22, 80, 168, 0.09);
  --positive: #1c7a52;
  --danger: #a52121;
  --warn: #8a5a00;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(16, 32, 44, 0.05), 0 10px 24px rgba(16, 32, 44, 0.06);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background-color: #eef2f7;
  background-image: linear-gradient(180deg, #f8fafc 0%, #eef2f7 55%, #e8eef6 100%);
  background-attachment: fixed;
  color: var(--ink);
  font: 16px/1.5 "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
}

a { color: var(--brand); }

.topbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
  box-shadow: 0 1px 2px rgba(16, 32, 44, 0.04);
}

.brand { font-weight: 700; letter-spacing: -0.01em; text-decoration: none; color: var(--ink); }

.nav { display: flex; flex-wrap: wrap; gap: 4px; margin-right: auto; }
.nav a { text-decoration: none; color: var(--ink-soft); padding: 4px 10px; border-radius: 8px; }
.nav a:hover { color: var(--ink); background: rgba(22, 80, 168, 0.06); }
.nav a[aria-current="page"] { color: var(--brand); background: var(--brand-soft); font-weight: 700; box-shadow: inset 0 -2px 0 var(--brand); }

/* The four signed-in sections are meaningless to a visitor, so they are
   dimmed until there is a session. They keep their place in the markup. */
body[data-handle=""] .nav a { opacity: 0.45; }

.session { display: flex; align-items: center; gap: 10px; }
.who { font-weight: 600; }
.handle { color: var(--ink-soft); }
/* The handle is rendered as a name plus handle, "@ada". The prefix is
   decorative CSS so the element keeps its bare handle text for the checks. */
.handle::before { content: "@"; }

.page {
  max-width: 720px;
  margin: 0 auto;
  padding: 16px;
  display: grid;
  gap: 16px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px;
}

.card-narrow { max-width: 420px; margin: 0 auto; }

h1, h2, h3 { margin: 0 0 12px; line-height: 1.25; }
h2 { font-size: 1.125rem; }
h3 { font-size: 0.95rem; text-transform: uppercase; letter-spacing: 0.04em; color: var(--ink-soft); }

.hint { color: var(--ink-soft); font-size: 0.9rem; }

.wallet-card .wallet-available { display: grid; gap: 2px; margin-bottom: 12px; }
.wallet-label { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--ink-soft); }
.wallet-available .wallet-value { font-size: 2.1rem; font-weight: 700; color: var(--ink); }
.wallet-secondary { display: flex; flex-wrap: wrap; gap: 20px; border-top: 1px solid var(--line); padding-top: 12px; }
.wallet-cell { display: grid; gap: 2px; }
.wallet-cell .wallet-value { font-size: 1rem; font-weight: 600; color: var(--ink-soft); }
.wallet-hint { font-size: 0.78rem; line-height: 1.35; color: #8a97a8; }

.field { display: grid; gap: 6px; margin-bottom: 12px; }
.field > span, .field-inline span { font-size: 0.85rem; font-weight: 600; color: var(--ink-soft); }
.input {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 1rem;
  background: var(--surface);
  color: var(--ink);
}
.input::placeholder { color: #9aa8b6; opacity: 1; }
.input:focus-visible, .button:focus-visible, a:focus-visible {
  outline: 3px solid var(--brand);
  outline-offset: 1px;
}

.button {
  display: inline-block;
  padding: 10px 16px;
  border: 1px solid transparent;
  border-radius: 8px;
  background: var(--brand);
  color: #ffffff;
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  box-shadow: 0 1px 2px rgba(15, 61, 128, 0.18);
}
.button:hover { background: var(--brand-strong); }
.button-quiet { background: var(--surface); color: var(--brand); border-color: var(--line); box-shadow: none; }
.button-quiet:hover { background: var(--canvas); }

.toolbar { display: flex; justify-content: flex-end; }

.messages:empty { display: none; }
.form-error {
  margin-bottom: 12px;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid #e6bcbc;
  background: #fdf2f2;
  color: var(--danger);
  font-weight: 600;
}
.form-error::before { content: "! "; }

/* An unknown outcome is not a rejection, so it does not use the error colour. */
.form-uncertain {
  margin-bottom: 12px;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid #e8d7ae;
  background: #fdf9ee;
  color: var(--warn);
  font-weight: 600;
}

.activity-list, .request-list, .authorization-list { display: grid; gap: 10px; }
.activity-item, .request-item, .authorization-item { border-bottom: 1px solid var(--line); padding-bottom: 10px; }
.activity-item:last-child, .request-item:last-child, .authorization-item:last-child { border-bottom: none; padding-bottom: 0; }

.activity-line, .request-line, .authorization-line { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.activity-amount, .request-amount, .authorization-amount { font-weight: 700; }
.activity-note, .request-note, .authorization-note { color: var(--ink-soft); }
.activity-meta, .request-meta, .authorization-meta { display: flex; gap: 10px; align-items: center; color: var(--ink-soft); font-size: 0.85rem; }

.chip { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 0.75rem; font-weight: 600; background: var(--canvas); color: var(--ink-soft); border: 1px solid var(--line); text-transform: capitalize; }
.chip-public { color: var(--positive); border-color: #bfe3d2; background: #f2fbf7; }
.chip-private { color: var(--warn); border-color: #e8d7ae; background: #fdf9ee; }
.chip-open { color: var(--warn); border-color: #e8d7ae; background: #fdf9ee; }
.chip-captured, .chip-paid { color: var(--positive); border-color: #bfe3d2; background: #f2fbf7; }
.chip-expired, .chip-declined, .chip-cancelled, .chip-voided { color: var(--ink-soft); }

.request-actions, .authorization-actions { display: flex; flex-wrap: wrap; gap: 8px; align-items: end; margin-top: 10px; }
.field-inline { display: grid; gap: 4px; max-width: 140px; }

.preview:empty { display: none; }
.split-preview-list { list-style: none; margin: 12px 0 0; padding: 0; display: grid; gap: 6px; }
.split-share { display: flex; justify-content: space-between; padding: 8px 12px; border-radius: 8px; background: var(--canvas); font-weight: 600; }

.empty { color: var(--ink-soft); margin: 0; }

.demo-accounts { margin-top: 16px; border-top: 1px solid var(--line); padding-top: 12px; }
.demo-accounts h3 { margin-bottom: 6px; }
.demo-accounts ul { list-style: none; margin: 0 0 8px; padding: 0; display: grid; gap: 2px; }
.demo-accounts li { font-size: 0.9rem; color: var(--ink-soft); }
.demo-accounts code { padding: 1px 6px; border: 1px solid var(--line); border-radius: 6px; background: var(--canvas); font-size: 0.85rem; color: var(--ink); }

@media (max-width: 420px) {
  .page { padding: 12px; }
  .wallet-available .wallet-value { font-size: 1.8rem; }
  .wallet-secondary { gap: 12px; }
}