:root {
  --bg: #0b0f14;
  --panel: #121821;
  --panel-2: #0e141c;
  --line: #1e2836;
  --ink: #e6edf3;
  --ink-dim: #8b98a8;
  --ink-faint: #5b6675;
  --accent: #2ee6c5;      /* vault cyan */
  --accent-dim: #12b39a;
  --amber-real: #f5b301;  /* authorized / hold */
  --green: #34d399;       /* captured */
  --red: #f87171;         /* declined */
  --radius: 14px;
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --sans: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  background:
    radial-gradient(1200px 600px at 50% -10%, #16202c 0%, transparent 60%),
    var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

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

.wrap {
  max-width: 460px;
  margin: 0 auto;
  padding: 28px 18px 60px;
}
.wrap.admin { max-width: 640px; }

/* ---- header / brand ---- */
.brand {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 22px;
}
.brand .lock {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--mono); letter-spacing: 0.14em; text-transform: uppercase;
  font-size: 12px; color: var(--ink-dim);
}
.brand .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 10px var(--accent); }

.mode-chip {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.12em;
  padding: 5px 9px; border-radius: 999px; border: 1px solid var(--line);
  color: var(--ink-dim);
}
.mode-chip.TEST { color: var(--amber-real); border-color: #4a3b12; background: #1c1608; }
.mode-chip.LIVE { color: var(--green); border-color: #123a2c; background: #08160f; }
.mode-chip.UNCONFIGURED { color: var(--red); border-color: #3a1414; background: #160808; }

/* ---- terminal readout ---- */
.readout {
  background: linear-gradient(180deg, var(--panel) 0%, var(--panel-2) 100%);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 22px 18px;
  margin-bottom: 18px;
}
.readout .label {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--ink-faint);
}
.amount-row { display: flex; align-items: baseline; gap: 8px; margin-top: 6px; }
.amount-row .cur { font-family: var(--mono); color: var(--ink-dim); font-size: 15px; }
.amount-input {
  background: transparent; border: none; outline: none;
  color: var(--ink); font-family: var(--mono); font-weight: 600;
  font-size: 42px; letter-spacing: -0.01em; width: 100%;
}
.amount-input::placeholder { color: var(--ink-faint); }
.merchant-line {
  margin-top: 10px; font-size: 13px; color: var(--ink-dim);
  display: flex; justify-content: space-between;
}

/* ---- fields ---- */
.field { margin-bottom: 14px; }
.field label {
  display: block; font-family: var(--mono); font-size: 11px;
  letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-faint);
  margin-bottom: 7px;
}
.input, .card-shell {
  width: 100%; background: var(--panel-2); border: 1px solid var(--line);
  border-radius: 10px; padding: 13px 14px; color: var(--ink);
  font-size: 15px; font-family: var(--sans); transition: border-color .15s, box-shadow .15s;
}
.input:focus { border-color: var(--accent-dim); box-shadow: 0 0 0 3px rgba(46,230,197,0.12); outline: none; }
.card-shell.focused { border-color: var(--accent-dim); box-shadow: 0 0 0 3px rgba(46,230,197,0.12); }
.row-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

select.input { appearance: none; }

/* ---- pay button ---- */
.pay-btn {
  width: 100%; margin-top: 6px; border: none; border-radius: 12px;
  padding: 16px; font-size: 16px; font-weight: 600; cursor: pointer;
  background: var(--accent); color: #04110d; letter-spacing: 0.01em;
  transition: transform .08s, filter .15s;
}
.pay-btn:hover { filter: brightness(1.06); }
.pay-btn:active { transform: translateY(1px); }
.pay-btn:disabled { opacity: .5; cursor: not-allowed; }
.pay-btn .sub { display:block; font-family: var(--mono); font-size: 11px; font-weight: 500; opacity:.7; margin-top:3px; letter-spacing:.1em; }

/* ---- result ---- */
.result { margin-top: 18px; border-radius: 12px; padding: 16px; display: none; border: 1px solid var(--line); }
.result.show { display: block; }
.result .rtitle { font-family: var(--mono); letter-spacing: .1em; text-transform: uppercase; font-size: 12px; }
.result .rmeta { font-family: var(--mono); font-size: 12px; color: var(--ink-dim); margin-top: 8px; word-break: break-all; }
.result.authorized { border-color:#4a3b12; background:#150f04; } .result.authorized .rtitle { color: var(--amber-real); }
.result.captured   { border-color:#123a2c; background:#07130d; } .result.captured .rtitle { color: var(--green); }
.result.declined   { border-color:#3a1414; background:#150808; } .result.declined .rtitle { color: var(--red); }
.result .actions { display:flex; gap:10px; margin-top:14px; }
.mini-btn {
  flex:1; border:1px solid var(--line); background: var(--panel);
  color: var(--ink); border-radius:9px; padding:11px; font-size:13px; cursor:pointer;
  font-family: var(--mono); letter-spacing:.05em;
}
.mini-btn:hover { border-color: var(--accent-dim); }
.mini-btn.danger:hover { border-color:#5a2020; color: var(--red); }

/* ---- footer ---- */
.secured {
  margin-top: 26px; text-align: center; font-size: 12px; color: var(--ink-faint);
  font-family: var(--mono); letter-spacing: .08em;
}
.testcards {
  margin-top: 14px; font-size: 12px; color: var(--ink-faint);
  border-top: 1px dashed var(--line); padding-top: 14px; line-height: 1.7;
}
.testcards code { color: var(--ink-dim); }

/* ---- admin ---- */
h1.title { font-size: 20px; margin: 0 0 4px; }
.sub-title { color: var(--ink-dim); font-size: 13px; margin: 0 0 22px; }
.card {
  background: var(--panel); border:1px solid var(--line); border-radius: var(--radius);
  padding: 20px; margin-bottom: 16px;
}
.card h2 { font-size: 13px; font-family: var(--mono); letter-spacing:.12em; text-transform:uppercase; color: var(--ink-dim); margin:0 0 16px; }
.status-grid { display:grid; grid-template-columns: 1fr 1fr; gap:10px; }
.status-item { background: var(--panel-2); border:1px solid var(--line); border-radius:9px; padding:11px 13px; }
.status-item .k { font-size:11px; color: var(--ink-faint); font-family: var(--mono); letter-spacing:.1em; }
.status-item .v { font-family: var(--mono); margin-top:4px; }
.ok  { color: var(--green); } .bad { color: var(--red); }
.save-btn { border:none; background: var(--accent); color:#04110d; font-weight:600; padding:13px 20px; border-radius:10px; cursor:pointer; font-size:14px; }
.save-btn:hover { filter: brightness(1.06); }
.toast { display:none; margin-top:12px; font-family:var(--mono); font-size:13px; }
.toast.ok { display:block; color: var(--green); } .toast.err { display:block; color: var(--red); }
.hint { font-size:12px; color: var(--ink-faint); margin-top:6px; }