* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 20% 80%, rgba(120, 119, 198, 0.3) 0%, transparent 50%),
              radial-gradient(circle at 80% 20%, rgba(255, 119, 198, 0.3) 0%, transparent 50%);
  animation: backgroundShift 10s ease-in-out infinite;
  pointer-events: none;
  z-index: -1;
}

@keyframes backgroundShift {
  0%, 100% { transform: translateX(0) translateY(0); }
  25% { transform: translateX(10px) translateY(-10px); }
  50% { transform: translateX(-5px) translateY(5px); }
  75% { transform: translateX(15px) translateY(-5px); }
}

main {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 20px;
}

.container {
  text-align: center;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  padding: 40px;
  border-radius: 24px;
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.15),
              0 10px 20px rgba(0, 0, 0, 0.1),
              inset 0 1px 0 rgba(255, 255, 255, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.2);
  max-width: 500px;
  width: 100%;
  position: relative;
  overflow: hidden;
  animation: fadeIn 1s ease-in-out;
}

.container::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s ease;
}

.container:hover::before {
  left: 100%;
}

.container h1 {
  font-size: 2.5rem;
  background: linear-gradient(135deg, #667eea, #764ba2);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 30px;
  animation: titleGlow 2s ease-in-out infinite alternate;
}

@keyframes titleGlow {
  0% { filter: drop-shadow(0 0 5px rgba(102, 126, 234, 0.5)); }
  100% { filter: drop-shadow(0 0 20px rgba(102, 126, 234, 0.8)); }
}

/* Responsive Design */
@media (max-width: 768px) {
  .container {
    width: 90%;
    padding: 30px 20px;
  }
  
  .container h1 {
    font-size: 2rem;
  }
  
  input {
    width: 100%;
  }
}

input {
  padding: 16px 20px;
  margin: 15px 0;
  width: 100%;
  border: 2px solid rgba(102, 126, 234, 0.3);
  border-radius: 50px;
  font-size: 16px;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(5px);
  transition: all 0.3s ease;
  outline: none;
}

input:focus {
  border-color: #667eea;
  box-shadow: 0 0 20px rgba(102, 126, 234, 0.4);
  transform: scale(1.02);
}

button {
  padding: 16px 32px;
  background: linear-gradient(135deg, #667eea, #764ba2);
  color: white;
  border: none;
  border-radius: 50px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  position: relative;
  overflow: hidden;
  transition: all 0.3s ease;
  box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
  margin: 10px 0;
}

button::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s ease;
}

button:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 35px rgba(102, 126, 234, 0.4);
}

button:hover::before {
  left: 100%;
}

button:active {
  transform: translateY(-1px);
}

#weatherResult {
  margin-top: 30px;
  padding: 20px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(5px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.5s ease;
}

#weatherResult.show {
  opacity: 1;
  transform: translateY(0);
}

.weather-card {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.05));
  border-radius: 16px;
  padding: 20px;
  margin: 10px 0;
  border: 1px solid rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(10px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.weather-card h2 {
  color: #333;
  margin-bottom: 15px;
  font-size: 1.5rem;
}

.weather-card p {
  color: #555;
  margin: 8px 0;
  font-size: 1.1rem;
}

.temperature {
  font-size: 2rem;
  font-weight: bold;
  background: linear-gradient(135deg, #667eea, #764ba2);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Footer Styles */
footer {
  background: rgba(0, 0, 0, 0.1);
  backdrop-filter: blur(10px);
  padding: 20px 0;
  text-align: center;
  margin-top: auto;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
}

footer p {
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.9rem;
  margin: 0;
}

/* Fade-in Animation */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Loading Animation */
.loading {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: #fff;
  animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}