/* orkey-web - light/dark palette mirrors the Android app */
:root {
  --bg: #ffffff;
  --card: #f6f8fa;
  --card-alt: #eef4ff;
  --stroke: #e2e8f0;
  --text: #111827;
  --text2: #374151;
  --muted: #6b7280;
  --label: #6b7280;
  --accent: #2563eb;
  --teal: #0f766e;
  --danger: #dc2626;
  --warn: #d97706;
  --ok: #16a34a;
  --on-accent: #ffffff;
  --field: #f3f6f9;
  --shadow: 0 1px 3px rgba(15, 23, 42, .12);
}
[data-theme="dark"] {
  --bg: #000000;
  --card: #1b2431;
  --card-alt: #152238;
  --stroke: #2c3644;
  --text: #e5e7eb;
  --text2: #d1d5db;
  --muted: #6b7280;
  --label: #8b95a3;
  --accent: #3b82f6;
  --teal: #2dd4bf;
  --danger: #f87171;
  --warn: #fbbf24;
  --ok: #4ade80;
  --on-accent: #ffffff;
  --field: #212b39;
  --shadow: none;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, "Noto Sans HK", "PingFang HK", "Microsoft JhengHei",
    "Segoe UI", Roboto, sans-serif;
  font-size: 15px;
  line-height: 1.55;
}
.hidden { display: none !important; }
.screen { max-width: 640px; margin: 0 auto; padding: 16px 16px 48px; }

h1 { font-size: 21px; margin: 0; }
h2 { font-size: 17px; margin: 0 0 8px; }
h3 { font-size: 15px; margin: 16px 0 6px; }
.sub { margin: 2px 0 14px; }
.section-title { font-size: 16px; margin: 18px 0 8px; }
.muted { color: var(--muted); }
.label { color: var(--label); }
.small { font-size: 12.5px; }
.ok { color: var(--ok); }
.warn { color: var(--warn); }
.error { color: var(--danger); }
hr { border: 0; border-top: 1px solid var(--stroke); margin: 10px 0; }

.topbar { display: flex; align-items: center; gap: 8px; }
.topbar h1 { flex: 1; }
.topbar-actions { display: flex; align-items: center; gap: 2px; }
.icon-btn {
  border: 0; background: transparent; font-size: 19px; line-height: 1;
  padding: 8px; cursor: pointer; border-radius: 10px;
}
.icon-btn:hover { background: var(--card); }

.card {
  background: var(--card);
  border: 1px solid var(--stroke);
  border-radius: 14px;
  padding: 14px;
  margin-bottom: 12px;
  box-shadow: var(--shadow);
}
.wallet-card { background: var(--card-alt); }
.big { font-size: 34px; font-weight: 700; margin: 4px 0 0; }
.row { display: flex; justify-content: space-between; gap: 12px; padding: 5px 0; }
.row b { font-weight: 600; }

.btn {
  border: 0; border-radius: 10px; padding: 12px 16px; font-size: 15px;
  cursor: pointer; color: var(--on-accent); min-height: 46px;
}
.btn.primary { background: var(--accent); }
.btn.teal { background: var(--teal); }
.btn.ghost { background: var(--field); color: var(--text); border: 1px solid var(--stroke); }
.btn.danger { background: var(--danger); }
.btn.block { width: 100%; }
.btn:disabled { opacity: .5; cursor: default; }
.btn-row { display: flex; gap: 8px; margin: 6px 0; }
.btn-row.end { justify-content: flex-end; margin-top: 14px; }
.btn-row .btn { flex: 1; }

.status { min-height: 20px; color: var(--text2); font-size: 14px; margin: 6px 0; }

/* key card */
.key-card { background: var(--card); }
.key-name { font-size: 17px; font-weight: 700; margin: 0; }
.key-mask { color: var(--muted); font-size: 12.5px; margin: 2px 0 6px; }
.key-remain { font-size: 26px; font-weight: 700; color: var(--ok); margin: 2px 0; }
.key-remain.low { color: var(--danger); }
.key-remain.na { color: var(--muted); font-size: 20px; }
.strip { display: flex; gap: 8px; margin-top: 10px; }
.cell {
  flex: 1; background: var(--field); border: 1px solid var(--stroke);
  border-radius: 8px; padding: 8px 10px;
}
.cell .k { font-size: 11px; color: var(--muted); }
.cell .v { font-size: 15px; font-weight: 700; }
.key-line { display: flex; justify-content: space-between; font-size: 13px;
  color: var(--text2); margin-top: 8px; }
.key-meta { font-size: 12px; color: var(--muted); margin-top: 6px; }
.key-err { font-size: 12px; color: var(--danger); }
.key-flow { font-size: 12.5px; color: var(--teal); margin-top: 6px; }
.key-actions { display: flex; gap: 6px; margin-top: 10px; }
.key-actions .btn { flex: 1; padding: 8px 4px; min-height: 40px; font-size: 13.5px; }

/* fields */
input[type=text], input[type=password], input[type=number] {
  width: 100%; padding: 11px 12px; margin: 4px 0 6px; font-size: 15px;
  color: var(--text); background: var(--field);
  border: 1px solid var(--stroke); border-radius: 10px; outline: none;
}
input:focus { border-color: var(--accent); }
.field-label { display: block; font-size: 13.5px; color: var(--label); margin-top: 8px; }
.field-label.sub { color: var(--text2); font-weight: 600; }
.check { display: flex; align-items: center; gap: 8px; font-size: 15px; margin: 6px 0; }
.check input { width: 18px; height: 18px; }

/* modals */
.modal {
  position: fixed; inset: 0; background: rgba(0, 0, 0, .55);
  display: flex; align-items: center; justify-content: center; padding: 16px; z-index: 20;
}
.modal-body {
  background: var(--bg); border: 1px solid var(--stroke); border-radius: 14px;
  padding: 18px 18px 14px; width: 100%; max-width: 460px;
  max-height: 88vh; overflow-y: auto;
}
.modal-body.wide { max-width: 560px; }

.login-card { max-width: 380px; margin: 12vh auto 0; }

/* activity rows */
.act-row { display: flex; justify-content: space-between; gap: 10px;
  padding: 8px 0; border-bottom: 1px solid var(--stroke); }
.act-row .d { font-size: 11.5px; color: var(--muted); }
.act-row .m { font-size: 14px; font-weight: 600; }
.act-row .a { font-weight: 700; text-align: right; }
.act-row .r { font-size: 11.5px; color: var(--muted); text-align: right; }
.act-total { font-weight: 700; margin-top: 10px; }


/* ============================================================= responsive ==
   Mobile (default): the single-column layout above.
   Desktop (>=900px): two columns - stats/controls left, key list right.
   >=1200px: the key cards themselves fan out into a grid.               */
.layout { display: block; }
.detail-grid { display: block; }

@media (min-width: 900px) {
  .screen { max-width: 1200px; padding: 26px 32px 72px; }
  h1 { font-size: 23px; }
  .sub { margin-bottom: 18px; }

  .layout {
    display: grid;
    grid-template-columns: minmax(340px, 400px) minmax(0, 1fr);
    gap: 22px;
    align-items: start;
  }
  .col-side .section-title { margin-top: 0; }
  .col-side .card { margin-bottom: 14px; }

  .detail-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
    gap: 0 24px;
    align-items: start;
  }
  .detail-grid .dcol + .dcol { border-left: 1px solid var(--stroke); padding-left: 24px; }
  .modal-body { max-width: 560px; }
  .modal-body.wide { max-width: 780px; }

  .login-card { margin-top: 16vh; }
}

@media (min-width: 1200px) {
  #keyList {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(330px, 1fr));
    gap: 16px;
    align-items: start;
  }
  #keyList .card { margin-bottom: 0; }
}

/* very narrow phones: keep the padding comfortable */
@media (max-width: 380px) {
  .screen { padding-left: 10px; padding-right: 10px; }
  .big { font-size: 30px; }
  .btn-row .btn { padding-left: 8px; padding-right: 8px; }
}