:root {
  --green: #173d2d;
  --green-2: #245b43;
  --cream: #eef7f1;
  --paper: #ffffff;
  --ink: #18221d;
  --muted: #68746d;
  --line: #d9ded8;
  --accent: #d9ef55;
  --danger: #b73737;
  font-family: Inter, "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: var(--cream);
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
body { margin: 0; min-height: 100vh; }
button, input, textarea, select { font: inherit; }
button { cursor: pointer; }

.login-shell {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px 18px;
  background:
    radial-gradient(circle at 50% 18%, rgba(255, 255, 255, .95), transparent 38%),
    var(--cream);
}

.brand {
  display: inline-block;
  margin-bottom: 38px;
  color: var(--green);
  text-decoration: none;
  font-size: 26px;
  font-weight: 900;
  letter-spacing: -.02em;
}
.eyebrow { color: #7ba28c; font-size: 11px; font-weight: 800; letter-spacing: 0.18em; }

.access-card {
  width: min(520px, 100%);
  padding: clamp(28px, 6vw, 48px);
  border: 1px solid rgba(23, 61, 45, .1);
  border-radius: 22px;
  background: var(--paper);
  box-shadow: 0 18px 55px rgba(23, 61, 45, .1);
}

.access-card h2 { margin: 16px 0 10px; font-size: 28px; letter-spacing: -.02em; }
.access-card p { color: var(--muted); line-height: 1.65; }

.primary {
  width: 100%;
  border: 0;
  border-radius: 10px;
  padding: 14px 20px;
  color: white;
  background: var(--green);
  font-weight: 800;
  transition: transform .15s ease, opacity .15s ease;
}
.primary:hover { transform: translateY(-1px); }
.primary:disabled { cursor: wait; opacity: .55; transform: none; }

form { display: grid; gap: 17px; }
label { display: grid; gap: 7px; font-size: 14px; font-weight: 700; }
label small { color: var(--green-2); font-weight: 500; }
input, textarea, select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 13px;
  color: var(--ink);
  background: white;
  outline: none;
}
input:focus, textarea:focus, select:focus { border-color: var(--green-2); box-shadow: 0 0 0 3px rgba(36, 91, 67, .1); }
input:disabled { color: var(--muted); background: #f2f3ef; }
textarea { min-height: 84px; resize: vertical; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.amount-row { display: flex; align-items: center; justify-content: space-between; padding: 17px; border-radius: 10px; background: #edf5f0; color: var(--green); }
.amount-row strong { color: var(--green); font-size: 25px; }
.payment-note { padding: 13px; border-radius: 12px; color: #626d45; background: #f4f6e6; font-size: 12px; line-height: 1.6; }
.form-error { margin: 0; color: var(--danger) !important; font-size: 13px; }

.switch-wallet { display: block; margin: 20px auto 0; border: 0; color: var(--green-2); background: transparent; font-weight: 700; }
.spinner { width: 42px; height: 42px; margin: 0 auto 20px; border: 4px solid #dce4de; border-top-color: var(--green); border-radius: 50%; animation: spin .8s linear infinite; }
#progress-view { text-align: center; padding: 20px 0; }
@keyframes spin { to { transform: rotate(360deg); } }

#toast {
  display: none;
  position: fixed;
  left: 50%;
  bottom: 28px;
  z-index: 10;
  max-width: calc(100% - 32px);
  padding: 12px 18px;
  border-radius: 12px;
  color: white;
  background: #17231d;
  box-shadow: 0 8px 32px rgba(0,0,0,.2);
  transform: translateX(-50%);
}
#toast.bad { background: var(--danger); }

@media (max-width: 800px) {
  .login-shell { align-items: flex-start; padding-top: 42px; }
  .access-card { padding: 32px 24px; border-radius: 18px; }
  .brand { margin-bottom: 34px; }
}

@media (max-width: 480px) {
  .field-row { grid-template-columns: 1fr; }
}