* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  font-family: Arial, Helvetica, sans-serif;
  background: #10151b;
}

body {
  color: #e8f0ff;
  background-image:
    radial-gradient(circle at 14% 16%, rgba(52, 76, 119, 0.34), transparent 34%),
    radial-gradient(circle at 80% 12%, rgba(41, 66, 102, 0.24), transparent 32%),
    linear-gradient(180deg, #10151b 0%, #171d24 56%, #232b35 100%);
  background-repeat: no-repeat;
  background-size: cover;
}

.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.login-card {
  width: min(440px, 100%);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(214, 228, 255, 0.25);
  box-shadow:
    0 22px 55px rgba(5, 10, 18, 0.6),
    0 0 90px rgba(128, 171, 255, 0.2);
  padding: 24px;
  backdrop-filter: blur(9px);
}

h1 {
  margin: 0 0 8px;
  font-size: 24px;
  line-height: 1.2;
}

.subtitle {
  margin: 0 0 18px;
  color: #c8d9f6;
  font-size: 14px;
}

.error {
  margin: 0 0 14px;
  color: #ffd6d6;
  background: rgba(151, 24, 24, 0.25);
  border: 1px solid rgba(255, 170, 170, 0.28);
  border-radius: 9px;
  padding: 9px 10px;
  font-size: 13px;
}

.login-form {
  display: grid;
  gap: 8px;
}

label {
  margin-top: 6px;
  font-size: 13px;
  color: #d8e7ff;
}

input {
  width: 100%;
  border: 1px solid rgba(200, 220, 255, 0.38);
  background: rgba(12, 20, 31, 0.5);
  color: #f1f7ff;
  border-radius: 10px;
  padding: 11px 12px;
  font-size: 14px;
}

input:focus {
  outline: none;
  border-color: #7fb1ff;
  box-shadow: 0 0 0 3px rgba(92, 146, 235, 0.2);
}

button {
  margin-top: 12px;
  border: 1px solid #2f7cff;
  background: linear-gradient(180deg, #4388ff 0%, #2d6fe2 100%);
  color: white;
  border-radius: 999px;
  padding: 11px 16px;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}

button:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 28px rgba(45, 111, 226, 0.35);
}