:root {
  --bg: #eef1f6;
  --card: #ffffff;
  --ink: #1f2933;
  --muted: #647382;
  --line: #d9dee6;
  --accent: #1a4d8f;
  --accent-dark: #143d72;
  --danger-bg: #fdecec;
  --danger-ink: #9b1c1c;
  --radius: 14px;
  --shadow: 0 10px 40px rgba(31, 41, 51, 0.12);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px 18px;
  font-family: var(--font);
  color: var(--ink);
  background:
    radial-gradient(1200px 600px at 50% -10%, #dde6f5 0%, transparent 60%),
    var(--bg);
}

.card {
  width: 100%;
  max-width: 520px;
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 32px 34px 36px;
}

.card__head { margin-bottom: 22px; }
.card__head h1 {
  margin: 0;
  font-size: 1.5rem;
  letter-spacing: -0.02em;
}
.subtitle {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.alert {
  background: var(--danger-bg);
  color: var(--danger-ink);
  border-radius: 10px;
  padding: 11px 14px;
  font-size: 0.9rem;
  margin-bottom: 18px;
}

.field { margin-bottom: 18px; }
.row {
  display: flex;
  gap: 16px;
}
.row .field { flex: 1; }

label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--muted);
  margin-bottom: 6px;
}

input, select, textarea {
  width: 100%;
  font: inherit;
  color: var(--ink);
  background: #fff;
  border: 1.5px solid var(--line);
  border-radius: 10px;
  padding: 11px 13px;
  transition: border-color 0.15s, box-shadow 0.15s;
}
textarea { resize: vertical; }
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(26, 77, 143, 0.15);
}

.input-money { position: relative; }
.input-money .prefix {
  position: absolute;
  left: 13px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--muted);
  pointer-events: none;
}
.input-money input { padding-left: 26px; }

.hint {
  margin: 6px 0 0;
  font-size: 0.78rem;
  color: var(--muted);
}

.btn {
  width: 100%;
  margin-top: 8px;
  font: inherit;
  font-weight: 600;
  color: #fff;
  background: var(--accent);
  border: none;
  border-radius: 10px;
  padding: 13px 16px;
  cursor: pointer;
  transition: background 0.15s, transform 0.05s;
}
.btn:hover { background: var(--accent-dark); }
.btn:active { transform: translateY(1px); }

@media (max-width: 460px) {
  .row { flex-direction: column; gap: 0; }
  .card { padding: 26px 22px 30px; }
}