* { box-sizing: border-box; }
html, body {
  height: 100%;
  margin: 0;
}
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: #eef3fb;
  display: flex;
  align-items: center;
  justify-content: center;
}
.login-card {
  width: 100%;
  max-width: 380px;
  background: #ffffff;
  border: 1px solid #dbe4f3;
  border-radius: 14px;
  padding: 36px 34px 30px;
  box-shadow: 0 10px 30px rgba(21, 55, 117, .10);
  margin: 20px;
}
.login-logo {
  display: block;
  height: 34px;
  width: auto;
  margin: 0 auto 26px;
}
.login-card h1 {
  font-size: 1.05rem;
  font-weight: 700;
  color: #16305c;
  text-align: center;
  margin: 0 0 22px;
  letter-spacing: .01em;
}
label {
  display: block;
  font-size: .78rem;
  font-weight: 600;
  color: #4a5b7c;
  margin-bottom: 6px;
}
.field {
  margin-bottom: 16px;
}
input[type="text"], input[type="password"] {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid #c9d6ec;
  border-radius: 8px;
  font-size: .92rem;
  color: #16305c;
  background: #f8fafd;
  outline: none;
  transition: border-color .15s, box-shadow .15s;
}
input[type="text"]:focus, input[type="password"]:focus {
  border-color: #2f5fd0;
  box-shadow: 0 0 0 3px rgba(47, 95, 208, .15);
  background: #fff;
}
.btn-primary {
  width: 100%;
  padding: 11px;
  border: none;
  border-radius: 8px;
  background: #2f5fd0;
  color: #fff;
  font-size: .92rem;
  font-weight: 600;
  cursor: pointer;
  margin-top: 6px;
  transition: background .15s;
}
.btn-primary:hover { background: #2650b3; }
.btn-primary:disabled { opacity: .6; cursor: default; }
.login-error {
  background: #fdecec;
  border: 1px solid #f3b9b9;
  color: #a3231f;
  font-size: .82rem;
  padding: 9px 12px;
  border-radius: 8px;
  margin-bottom: 16px;
  display: none;
}
.login-error.visible { display: block; }