/* Reset-ish */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle at top, #233a77 0, #0a1024 50%, #050712 100%);
  color: #f9fbff;
}

/* Layout */
.login-page {
  width: 100%;
  padding: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.login-card {
  width: 100%;
  max-width: 380px;
  background: rgba(8, 16, 40, 0.92);
  border-radius: 18px;
  padding: 28px 26px 26px;
  box-shadow:
    0 18px 45px rgba(0, 0, 0, 0.6),
    0 0 0 1px rgba(255, 255, 255, 0.04);
  backdrop-filter: blur(14px);
}

/* Header */
.logo {
  font-size: 1.6rem;
  margin-bottom: 4px;
  letter-spacing: 0.05em;
}

.subtitle {
  font-size: 0.9rem;
  color: #9fb0ff;
  margin-bottom: 18px;
}

/* Form */
.field {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 14px;
}

label {
  font-size: 0.8rem;
  color: #b7c3ff;
}

input {
  padding: 10px 11px;
  border-radius: 10px;
  border: 1px solid rgba(120, 144, 255, 0.5);
  background: rgba(3, 9, 30, 0.85);
  color: #f5f7ff;
  outline: none;
  font-size: 0.9rem;
  transition: border-color 0.15s ease, box-shadow 0.15s ease,
    background 0.15s ease;
}

input::placeholder {
  color: #8089b5;
}

input:focus {
  border-color: #b0c2ff;
  box-shadow: 0 0 0 1px rgba(167, 189, 255, 0.7);
  background: rgba(6, 14, 44, 0.95);
}

/* Button */
.btn-primary {
  width: 100%;
  margin-top: 6px;
  padding: 10px 12px;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  background: linear-gradient(135deg, #4c7dff, #7a9dff);
  color: #fdfdff;
  box-shadow: 0 10px 24px rgba(21, 54, 147, 0.8);
  transition: transform 0.08s ease, box-shadow 0.08s ease, filter 0.08s ease;
}

.btn-primary:hover {
  filter: brightness(1.05);
  box-shadow: 0 12px 32px rgba(27, 71, 176, 0.9);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(1px);
  box-shadow: 0 6px 16px rgba(21, 54, 147, 0.7);
}

/* Error message */
.error-message {
  min-height: 18px;
  margin-top: 10px;
  font-size: 0.8rem;
  color: #ff9b9b;
}

/* Small screens */
@media (max-width: 400px) {
  .login-card {
    padding: 22px 18px 20px;
  }

  .logo {
    font-size: 1.4rem;
  }
}