* {
  margin: 0;
  padding: 0;
  font-family: 'Poppins', sans-serif;
  box-sizing: border-box;
}

body {
  height: 100vh;
  width: 100%;
  background: linear-gradient(-45deg, #1e3c72, #2a5298, #0f2027, #203a43, #2c5364);
  background-size: 400% 400%;
  animation: gradientAnimation 15s ease infinite;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: hidden;
  padding: 20px;
}

@keyframes gradientAnimation {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.card {
  width: 100%;
  max-width: 480px;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(15px);
  border-radius: 20px;
  padding: 40px 35px;
  text-align: center;
  color: #fff;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
  animation: fadeIn 1s ease-in-out;
  transition: transform 0.3s ease;
}

.card:hover {
  transform: scale(1.02);
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.search {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 25px;
  animation: fadeIn 1.5s ease-in-out;
}

.search input {
  border: 0;
  outline: 0;
  background: #ebfffc;
  color: #333;
  padding: 10px 25px;
  height: 60px;
  border-radius: 30px;
  flex: 1;
  margin-right: 16px;
  font-size: 18px;
  transition: 0.3s ease;
}

.search input:focus {
  box-shadow: 0 0 10px rgba(0, 255, 255, 0.4);
}

.search button {
  border: none;
  background: #ebfffc;
  border-radius: 50%;
  width: 60px;
  height: 60px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: 0.3s ease;
  animation: pulse 2s infinite;
}

.search button:hover {
  transform: scale(1.1);
}

.search button img {
  width: 20px;
}

@keyframes pulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.05); }
  100% { transform: scale(1); }
}

.weather-icon {
  width: 160px;
  margin-top: 30px;
  animation: floatIcon 3s ease-in-out infinite;
  transition: opacity 0.3s ease;
}

@keyframes floatIcon {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.weather h1 {
  font-size: 72px;
  font-weight: 600;
  margin-top: 10px;
  animation: breathe 4s ease-in-out infinite;
}

.weather h2 {
  font-size: 36px;
  font-weight: 400;
  margin-top: -5px;
  animation: fadeIn 2s ease-in-out;
}

@keyframes breathe {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.03); }
}

.details {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 40px;
  padding: 0 20px;
  animation: fadeIn 2s ease-in-out;
}

.col {
  display: flex;
  align-items: center;
  text-align: left;
}

.col img {
  width: 40px;
  margin-right: 10px;
  animation: rotateIcon 6s linear infinite;
}

@keyframes rotateIcon {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.humidity, .wind {
  font-size: 22px;
  font-weight: bold;
  animation: breathe 5s ease-in-out infinite;
}

.weather {
  display: none;
}

.error {
  text-align: left;
  margin-left: 10px;
  font-size: 14px;
  color: #ff4d4d;
  display: none;
  animation: fadeIn 0.5s ease-in-out;
}

/* Responsive */
@media (max-width: 500px) {
  .card {
    padding: 30px 25px;
  }

  .weather h1 {
    font-size: 48px;
  }

  .weather h2 {
    font-size: 28px;
  }

  .details {
    flex-direction: column;
    gap: 20px;
    align-items: flex-start;
  }

  .col {
    width: 100%;
    justify-content: flex-start;
  }
}