* {
  box-sizing: border-box;
  font-family: "Segoe UI", Tahoma, sans-serif;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle at 20% 20%, #f5f7ff, #e5ecff 40%, #dbe2ff 60%, #d1d8f6);
}

.auth-card {
  width: min(420px, 92vw);
  padding: 32px;
  background: #ffffff;
  border-radius: 18px;
  box-shadow: 0 20px 60px rgba(34, 58, 94, 0.18);
  border: 1px solid #e6e9f2;
}

h1 {
  margin: 0 0 20px;
  color: #1f2a44;
  font-size: 1.6rem;
}

form {
  display: grid;
  gap: 12px;
}

label {
  font-weight: 600;
  color: #33405c;
  font-size: 0.95rem;
}

input {
  width: 100%;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid #ccd2e5;
  font-size: 1rem;
  transition: border-color 120ms ease, box-shadow 120ms ease;
}

input:focus {
  outline: none;
  border-color: #6b7bff;
  box-shadow: 0 0 0 4px rgba(107, 123, 255, 0.15);
}

button {
  margin-top: 4px;
  padding: 12px 14px;
  border: none;
  border-radius: 10px;
  background: linear-gradient(135deg, #6b7bff, #4e60e6);
  color: #fff;
  font-weight: 700;
  letter-spacing: 0.3px;
  cursor: pointer;
  transition: transform 120ms ease, box-shadow 120ms ease;
  box-shadow: 0 12px 24px rgba(79, 96, 230, 0.24);
}

button:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 28px rgba(79, 96, 230, 0.3);
}

button:active {
  transform: translateY(0);
  box-shadow: 0 10px 20px rgba(79, 96, 230, 0.2);
}

.helper {
  margin: 8px 0 0;
  color: #5a6787;
  font-size: 0.95rem;
}

.helper a {
  color: #4e60e6;
  font-weight: 600;
  text-decoration: none;
}

.helper a:hover {
  text-decoration: underline;
}

.message {
  min-height: 18px;
  color: #d14343;
  font-weight: 600;
  margin: 6px 0 0;
  font-size: 0.95rem;
}