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

:root {
  --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  --dark-gradient: linear-gradient(135deg, #0c0c0c 0%, #1a1a2e 50%, #16213e 100%);
  --glass-bg: rgba(255, 255, 255, 0.1);
  --glass-border: rgba(255, 255, 255, 0.2);
  --text-primary: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.8);
  --accent-color: #667eea;
  --success-color: #10b981;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--dark-gradient);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow-x: hidden;
  position: relative;
}

.background-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(circle at 20% 80%, rgba(102, 126, 234, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(245, 87, 108, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 40% 40%, rgba(240, 147, 251, 0.08) 0%, transparent 50%);
  pointer-events: none;
  z-index: -1;
}

.center-box {
  text-align: center;
  padding: 3rem 2.5rem;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 24px;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 
    0 8px 32px rgba(0, 0, 0, 0.3),
    0 0 0 1px rgba(255, 255, 255, 0.1);
  animation: slideUp 1s ease-out;
  max-width: 540px;
  width: 90%;
  position: relative;
  transition: transform 0.3s ease;
}

.center-box::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border-radius: 24px;
  padding: 1px;
  background: linear-gradient(135deg, rgba(255,255,255,0.2), rgba(255,255,255,0.05));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: exclude;
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask-composite: exclude;
}

.icon-container {
  margin-bottom: 2rem;
  animation: float 3s ease-in-out infinite;
}

.icon-container i {
  font-size: 4rem;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 4px 8px rgba(102, 126, 234, 0.3));
}

h1 {
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 700;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, #ffffff 0%, #e2e8f0 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.main-description {
  font-size: 1.2rem;
  font-weight: 400;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 2.5rem;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

.progress-container {
  margin-bottom: 3rem;
  text-align: center;
}

.progress-bar {
  width: 100%;
  height: 8px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  overflow: hidden;
  margin-bottom: 1rem;
  position: relative;
}

.progress-fill {
  height: 100%;
  background: var(--primary-gradient);
  border-radius: 10px;
  width: 0%;
  animation: progressAnimation 3s ease-out forwards 1.5s;
  position: relative;
}

.progress-fill::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  animation: shimmer 2s infinite;
}

.progress-text {
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 500;
}

/* Floating particles */
.particles {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: -1;
}

.particle {
  position: absolute;
  width: 4px;
  height: 4px;
  background: rgba(102, 126, 234, 0.6);
  border-radius: 50%;
  animation: float-particle 4s infinite linear;
}

/* Animations */
@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

@keyframes progressAnimation {
  from {
    width: 0%;
  }
  to {
    width: 73%;
  }
}

@keyframes shimmer {
  0% {
    transform: translateX(-100%);
  }
  100% {
    transform: translateX(100%);
  }
}

@keyframes float-particle {
  0% {
    transform: translateY(100vh) scale(0);
    opacity: 1;
  }
  10% {
    opacity: 1;
  }
  90% {
    opacity: 1;
  }
  100% {
    transform: translateY(-100px) scale(1);
    opacity: 0;
  }
}

/* Responsive design */
@media (max-width: 640px) {
  .center-box {
    padding: 2.5rem 1.5rem;
    margin: 1rem;
  }
  
}

@media (max-width: 480px) {
  .icon-container i {
    font-size: 3rem;
  }
  
  .main-description {
    font-size: 1.1rem;
  }
}