:root {
  --bg-color: #1a1a1a;
  --grey-bg: #2d2d2d;
  --accent: #007aff;
  --text-primary: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.7);
  --glass: rgba(255, 255, 255, 0.05);
  --glass-border: rgba(255, 255, 255, 0.1);
}

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

body {
  font-family: "Outfit", sans-serif;
  background-color: var(--grey-bg);
  color: var(--text-primary);
  overflow: hidden;
}

#three-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 1;
}

#ui-container {
  position: relative;
  z-index: 10;
  padding: 2rem;
  pointer-events: none;
  height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

#ui-container * {
  pointer-events: auto;
}

header h1 {
  font-weight: 600;
  font-size: 1.5rem;
  letter-spacing: -0.02em;
}

header p {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.controls {
  margin-top: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  width: fit-content;
}

.upload-btn {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: var(--accent);
  padding: 0.8rem 1.5rem;
  border-radius: 50px;
  cursor: pointer;
  font-weight: 600;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 10px 20px rgba(0, 122, 255, 0.2);
}

.upload-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 15px 30px rgba(0, 122, 255, 0.3);
}

.secondary-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: var(--glass);
  backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
  padding: 0.6rem 1.2rem;
  border-radius: 50px;
  cursor: pointer;
  font-weight: 500;
  font-size: 0.9rem;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.secondary-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-1px);
}

.glass {
  background: var(--glass);
  backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  padding: 1rem;
}

#stats {
  width: 200px;
}

.stat-item {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  margin-bottom: 0.5rem;
}

.stat-item:last-child {
  margin-bottom: 0;
}

.label {
  color: var(--text-secondary);
}

.instructions {
  align-self: flex-start;
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.instructions strong {
  color: var(--text-primary);
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

#ui-container > * {
  animation: fadeIn 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}