* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; height: 100%; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif; }

.auth-body {
  display: flex; align-items: center; justify-content: center;
  min-height: 100vh; background: linear-gradient(135deg, #eef2ff, #f5f3ff);
}

.auth-card {
  background: #fff; padding: 32px 28px; border-radius: 16px;
  width: min(420px, 92vw);
  box-shadow: 0 10px 40px rgba(40, 30, 90, .12);
  border: 1px solid #eceef5;
}
.brand { display: flex; align-items: center; gap: 8px; margin-bottom: 20px; }
.brand .logo { font-size: 22px; color: #6366f1; }
.brand .title { font-weight: 700; font-size: 17px; }
.brand .badge { font-size: 11px; padding: 2px 8px; background: #eef2ff; color: #4f46e5; border-radius: 999px; }

.auth-card h1 { margin: 0 0 18px; font-size: 20px; font-weight: 600; }
.auth-card label { display: block; font-size: 13px; color: #374151; margin-bottom: 12px; }
.auth-card input {
  display: block; width: 100%; margin-top: 6px;
  border: 1px solid #e5e7eb; border-radius: 8px;
  padding: 9px 12px; font-size: 14px; outline: none; background: #fff;
}
.auth-card input:focus { border-color: #6366f1; box-shadow: 0 0 0 3px rgba(99,102,241,.15); }
.btn {
  border: 1px solid #e5e7eb; background: #fff; color: #374151;
  padding: 9px 14px; border-radius: 8px; font-size: 14px; cursor: pointer;
  font-weight: 500;
}
.btn.primary { background: #6366f1; border-color: #6366f1; color: #fff; }
.btn.primary:hover { background: #5457e0; }
.btn.primary:disabled { background: #c7d2fe; border-color: #c7d2fe; cursor: not-allowed; }
.btn.full { width: 100%; margin-top: 6px; }
.msg { font-size: 13px; color: #b91c1c; min-height: 18px; margin: 12px 0 0; }
.msg.ok { color: #047857; }
.auth-links { text-align: right; margin: 12px 0 0; font-size: 13px; }
.auth-links a { color: #4f46e5; text-decoration: none; }
.auth-links a:hover { text-decoration: underline; }
.hint { font-size: 13px; color: #6b7280; margin: -4px 0 12px; }