/* === GLOBAL === */
body {
  font-family: 'Inter', sans-serif;
  background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 40%, #3b82f6 100%);
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
  color: #0f172a;
}

/* === CONTAINER === */
.login-container {
  width: 100%;
  max-width: 400px;
  padding: 20px;
}

.login-card {
  background: #ffffff;
  border-radius: 16px;
  box-shadow: 0 10px 25px rgba(30, 58, 138, 0.25);
  padding: 40px 32px;
  text-align: center;
  position: relative;
  animation: fadeUp 0.5s ease-out both;
}

/* === ANIMATION === */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(15px); }
  to { opacity: 1; transform: translateY(0); }
}

/* === TITLE === */
h2 {
  margin-bottom: 30px;
  color: #1d4ed8;
  font-weight: 700;
  font-size: 1.6rem;
}

/* === INPUT GROUP === */
.input-group {
  position: relative;
  margin-bottom: 26px;
  text-align: left;
}

.input-group input {
  width: 100%;
  padding: 14px;
  border: 1.8px solid #cbd5e1;
  border-radius: 8px;
  outline: none;
  font-size: 15px;
  background: transparent;
  transition: border-color 0.3s, box-shadow 0.3s;
  box-sizing: border-box;
}

.input-group label {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  background: #fff;
  padding: 0 6px;
  color: #64748b;
  font-size: 14px;
  transition: all 0.25s ease;
  pointer-events: none;
}

.input-group input:focus {
  border-color: #2563eb;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.input-group input:focus + label,
.input-group input:not(:placeholder-shown) + label {
  top: 0;
  left: 12px;
  font-size: 12px;
  color: #2563eb;
  transform: translateY(-50%) scale(0.96);
}

/* === BUTTON === */
button {
  width: 100%;
  padding: 13px;
  border: none;
  background: linear-gradient(90deg, #2563eb, #1e40af);
  color: #fff;
  font-weight: 600;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 1rem;
  box-shadow: 0 6px 15px rgba(37, 99, 235, 0.3);
}

button:hover {
  background: linear-gradient(90deg, #1e40af, #1e3a8a);
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(37, 99, 235, 0.35);
}

/* === ERROR MESSAGE === */
.error {
  background: #eff6ff;
  color: #1d4ed8;
  padding: 10px 14px;
  border-radius: 8px;
  margin-bottom: 18px;
  font-size: 14px;
  text-align: center;
  font-weight: 500;
  box-shadow: 0 2px 6px rgba(30, 64, 175, 0.1);
  border-left: 4px solid #2563eb;
}

/* === RESPONSIVE === */
@media (max-width: 480px) {
  .login-card {
    padding: 34px 26px;
  }
  h2 {
    font-size: 1.4rem;
  }
  button {
    padding: 12px;
    font-size: 0.95rem;
  }
}