:root {
  --bg: #f4f7fb;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --secondary: #e5e7eb;
  --danger-bg: #fee2e2;
  --danger-text: #991b1b;
  --border: #d1d5db;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.container {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.card {
  width: 100%;
  max-width: 720px;
  background: var(--card);
  border-radius: 14px;
  padding: 24px;
  box-shadow: 0 10px 24px rgba(0,0,0,.08);
}

h1 { margin: 0 0 8px; }
.subtitle { margin: 0 0 18px; color: var(--muted); }

.form-group { margin-bottom: 14px; display: flex; flex-direction: column; }
label { margin-bottom: 6px; font-weight: 600; }

input {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px;
  font-size: 15px;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

@media (max-width: 640px) {
  .grid-2 { grid-template-columns: 1fr; }
}

.btn {
  display: inline-block;
  border: none;
  border-radius: 8px;
  padding: 10px 16px;
  margin-right: 8px;
  margin-top: 8px;
  background: var(--primary);
  color: #fff;
  text-decoration: none;
  cursor: pointer;
}

.btn:hover { background: var(--primary-hover); }

.btn-secondary {
  background: var(--secondary);
  color: #111827;
}

.error-box {
  background: var(--danger-bg);
  color: var(--danger-text);
  border-radius: 8px;
  padding: 10px 12px;
  margin-bottom: 12px;
}

.error-text {
  color: var(--danger-text);
  font-weight: 600;
}

.account-list {
  list-style: none;
  padding: 0;
  margin: 14px 0;
}

.account-list li { margin-bottom: 10px; }

.swatch {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 1px solid #00000033;
  border-radius: 3px;
  vertical-align: middle;
  margin-left: 6px;
}

.avatar {
  width: 140px;
  height: 140px;
  object-fit: cover;
  border-radius: 10px;
  border: 1px solid var(--border);
  margin-bottom: 12px;
}