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

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(135deg, #0a1628 0%, #1a2a4a 50%, #0f1f3a 100%);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

body::before {
  content: '';
  position: absolute;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(79, 70, 229, 0.3) 0%, transparent 70%);
  border-radius: 50%;
  top: -200px;
  right: -200px;
  animation: float 6s ease-in-out infinite;
}

body::after {
  content: '';
  position: absolute;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(34, 211, 238, 0.2) 0%, transparent 70%);
  border-radius: 50%;
  bottom: -150px;
  left: -150px;
  animation: float 8s ease-in-out infinite reverse;
}

@keyframes float {
  0%, 100% {
    transform: translateY(0) scale(1);
  }
  50% {
    transform: translateY(-20px) scale(1.05);
  }
}

.auth-container {
  width: 100%;
  max-width: 400px;
  padding: 20px;
}

.auth-box {
  background: linear-gradient(180deg, rgba(248, 250, 252, 0.95) 0%, rgba(226, 232, 240, 0.95) 100%);
  backdrop-filter: blur(20px);
  border-radius: 24px;
  padding: 40px;
  box-shadow: 0 10px 50px rgba(79, 70, 229, 0.4), 0 0 100px rgba(34, 211, 238, 0.2);
  border: 2px solid rgba(147, 197, 253, 0.3);
  position: relative;
  z-index: 1;
}

h1 {
  text-align: center;
  background: linear-gradient(135deg, #4f46e5 0%, #a855f7 50%, #22d3ee 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 30px;
  font-size: 32px;
  font-weight: bold;
  text-shadow: 0 4px 20px rgba(79, 70, 229, 0.3);
}

.error-message {
  background: linear-gradient(135deg, rgba(168, 85, 247, 0.15), rgba(147, 51, 234, 0.15));
  color: #a855f7;
  padding: 12px;
  border-radius: 12px;
  margin-bottom: 20px;
  text-align: center;
  border: 2px solid rgba(168, 85, 247, 0.3);
  box-shadow: 0 2px 15px rgba(168, 85, 247, 0.2);
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  color: #555;
  font-weight: 500;
  margin-bottom: 8px;
}

.form-group input {
  width: 100%;
  padding: 12px;
  border: 2px solid rgba(147, 197, 253, 0.3);
  border-radius: 12px;
  font-size: 16px;
  transition: all 0.3s;
  background: rgba(255, 255, 255, 0.8);
}

.form-group input:focus {
  outline: none;
  border-color: #4f46e5;
  box-shadow: 0 4px 20px rgba(79, 70, 229, 0.3);
  background: rgba(255, 255, 255, 1);
}

.btn-primary {
  width: 100%;
  padding: 14px;
  background: linear-gradient(135deg, #4f46e5 0%, #a855f7 50%, #22d3ee 100%);
  color: white;
  border: none;
  border-radius: 12px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s;
  box-shadow: 0 4px 20px rgba(79, 70, 229, 0.4);
  position: relative;
  overflow: hidden;
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transition: left 0.5s;
}

.btn-primary:hover::before {
  left: 100%;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 30px rgba(79, 70, 229, 0.6), 0 0 40px rgba(34, 211, 238, 0.3);
}

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

.auth-switch {
  text-align: center;
  margin-top: 20px;
  color: #666;
}

.auth-switch a {
  background: linear-gradient(135deg, #4f46e5 0%, #22d3ee 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s;
}

.auth-switch a:hover {
  text-decoration: underline;
  filter: brightness(1.2);
}