* {
  box-sizing: border-box;
}

body {
  margin: 0;
  height: 100vh;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  display: flex;
  justify-content: center;
  align-items: center;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  overflow: hidden;
  position: relative;
}

.background-animation {
  position: absolute;
  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%),
    radial-gradient(circle at 40% 40%, rgba(120, 219, 255, 0.2) 0%, transparent 50%);
  animation: float 20s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0px) rotate(0deg); }
  33% { transform: translateY(-20px) rotate(1deg); }
  66% { transform: translateY(10px) rotate(-1deg); }
}

.login-container {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  padding: 3rem 2.5rem;
  border-radius: 24px;
  box-shadow: 
    0 20px 40px rgba(0, 0, 0, 0.1),
    0 0 0 1px rgba(255, 255, 255, 0.2);
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 380px;
  max-width: 90vw;
  gap: 2rem;
  position: relative;
  z-index: 10;
  animation: slideUp 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  transform-origin: center;
}

@keyframes slideUp {
  0% {
    opacity: 0;
    transform: translateY(40px) scale(0.95);
  }
  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.logo-section {
  text-align: center;
  margin-bottom: 1rem;
  animation: fadeInDown 1s ease-out 0.2s both;
}

@keyframes fadeInDown {
  0% {
    opacity: 0;
    transform: translateY(-20px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

.logo-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  display: block;
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
  40% { transform: translateY(-10px); }
  60% { transform: translateY(-5px); }
}

.logo-section h1 {
  margin: 0 0 0.5rem 0;
  font-size: 2.5rem;
  font-weight: 700;
  background: linear-gradient(135deg, #667eea, #764ba2);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -1px;
}

.logo-section p {
  margin: 0;
  color: #6b7280;
  font-size: 1rem;
  font-weight: 400;
}

.login-form {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  animation: fadeInUp 1s ease-out 0.4s both;
}

@keyframes fadeInUp {
  0% {
    opacity: 0;
    transform: translateY(20px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

.input-group {
  position: relative;
  width: 100%;
  animation: slideInLeft 0.6s ease-out both;
}

.input-group:nth-child(1) { animation-delay: 0.6s; }
.input-group:nth-child(2) { animation-delay: 0.7s; }

@keyframes slideInLeft {
  0% {
    opacity: 0;
    transform: translateX(-30px);
  }
  100% {
    opacity: 1;
    transform: translateX(0);
  }
}

.input-group input {
  width: 100%;
  padding: 1rem 1rem 1rem 3rem;
  border: 2px solid #e5e7eb;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.8);
  font-size: 1rem;
  outline: none;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  font-family: inherit;
}

.input-group input:focus {
  border-color: #667eea;
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
  transform: translateY(-1px);
}

.input-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.2rem;
  opacity: 0.6;
  transition: all 0.3s ease;
}

.input-group input:focus + .input-icon {
  opacity: 1;
  transform: translateY(-50%) scale(1.1);
}

.form-buttons {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 0.5rem;
  animation: fadeInUp 0.8s ease-out 0.8s both;
}

.btn-primary, .btn-secondary {
  position: relative;
  padding: 1rem 2rem;
  border: none;
  border-radius: 12px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  font-family: inherit;
  overflow: hidden;
}

.btn-primary {
  background: linear-gradient(135deg, #667eea, #764ba2);
  color: white;
  box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  background: transparent;
  color: #667eea;
  border: 2px solid #e5e7eb;
}

.btn-secondary:hover {
  background: rgba(102, 126, 234, 0.05);
  border-color: #667eea;
  transform: translateY(-1px);
}

.btn-loader {
  display: none;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 20px;
  height: 20px;
  border: 2px solid transparent;
  border-top: 2px solid white;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: translate(-50%, -50%) rotate(0deg); }
  100% { transform: translate(-50%, -50%) rotate(360deg); }
}

.btn-text {
  transition: opacity 0.3s ease;
}

.features {
  display: flex;
  justify-content: space-around;
  width: 100%;
  margin-top: 1rem;
  padding-top: 1.5rem;
  border-top: 1px solid #e5e7eb;
  animation: fadeInUp 1s ease-out 1s both;
}

.feature {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: #6b7280;
  transition: all 0.3s ease;
}

.feature:hover {
  transform: translateY(-2px);
}

.feature-icon {
  font-size: 1.5rem;
  transition: transform 0.3s ease;
}

.feature:hover .feature-icon {
  transform: scale(1.1);
}

.feature-text {
  text-align: center;
  line-height: 1.4;
  font-weight: 700;
  color: #374151;
  letter-spacing: 0.5px;
  word-spacing: 2px;
}

.notification {
  position: fixed;
  top: 2rem;
  right: 2rem;
  padding: 1rem 1.5rem;
  border-radius: 12px;
  color: white;
  font-weight: 500;
  z-index: 1000;
  display: none;
  animation: slideIn 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  max-width: 300px;
}

.notification.error {
  background: linear-gradient(135deg, #ef4444, #dc2626);
  box-shadow: 0 4px 15px rgba(239, 68, 68, 0.3);
}

.notification.success {
  background: linear-gradient(135deg, #10b981, #059669);
  box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateX(100%) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateX(0) scale(1);
  }
}

@media (max-width: 480px) {
  .login-container {
    min-width: 320px;
    padding: 2rem 1.5rem;
    margin: 1rem;
  }
  
  .features {
    flex-direction: column;
    gap: 1rem;
  }
  
  .notification {
    right: 1rem;
    left: 1rem;
    max-width: none;
  }
}