:root {
  --bg-color: #0B0F19;
  --panel-bg: rgba(18, 24, 39, 0.7);
  --primary: #00E5FF;
  --secondary: #9D4EDD;
  --success: #A8FF3E;
  --warning: #FFE45E;
  --error: #FF4D6D;
  --text-main: #F4F7FF;
  --text-sec: #8B95AA;
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--bg-color);
  color: var(--text-main);
  font-family: 'Inter', sans-serif;
  overflow: hidden;
  background-image: radial-gradient(circle at center, #15122B 0%, #0B0F19 100%);
}

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

#ui-layer {
  position: absolute;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 10;
  pointer-events: none;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.panel {
  background: var(--panel-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-radius: 16px;
  border: 1px solid rgba(0, 229, 255, 0.2);
  padding: 24px;
  pointer-events: auto;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
}

.header {
  margin-top: 20px;
  width: 90%;
  max-width: 800px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.header h1 {
  margin: 0;
  font-weight: 800;
  font-style: italic;
  letter-spacing: 2px;
  color: var(--primary);
  text-shadow: 0 0 10px rgba(0, 229, 255, 0.5);
}

.score-container {
  font-size: 24px;
  font-weight: 800;
  color: var(--success);
}

.streak-container {
  font-size: 20px;
  font-weight: 800;
  color: var(--secondary);
  text-shadow: 0 0 10px var(--secondary);
  animation: pulse 1s infinite alternate;
}

@keyframes pulse {
  from { opacity: 0.8; text-shadow: 0 0 5px var(--secondary); }
  to { opacity: 1; text-shadow: 0 0 20px var(--secondary); }
}

#screens {
  flex-grow: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
}

.screen {
  display: none;
  text-align: center;
  min-width: 300px;
  max-width: 600px;
}

.screen.active {
  display: block;
  animation: fadeIn 0.5s ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.btn {
  border: none;
  border-radius: 8px;
  padding: 12px 24px;
  font-size: 16px;
  font-weight: 800;
  cursor: pointer;
  transition: all 0.2s ease;
  margin-top: 20px;
  font-family: 'Inter', sans-serif;
  text-transform: uppercase;
}

.btn-primary {
  background: var(--success);
  color: var(--bg-color);
  box-shadow: 0 0 15px rgba(168, 255, 62, 0.4);
}
.btn-primary:hover {
  background: #B9FF66;
  box-shadow: 0 0 25px rgba(168, 255, 62, 0.8);
  transform: scale(1.05);
}

.btn-secondary {
  background: var(--secondary);
  color: #fff;
  box-shadow: 0 0 15px rgba(157, 78, 221, 0.4);
}
.btn-secondary:hover {
  background: #C77DFF;
  box-shadow: 0 0 25px rgba(157, 78, 221, 0.8);
  transform: scale(1.05);
}

.glow-text {
  font-size: 48px;
  font-weight: 800;
  color: var(--primary);
  text-shadow: 0 0 20px var(--primary);
  margin: 0;
  margin-bottom: 20px;
}

#timer-bar {
  width: 100%;
  height: 10px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 5px;
  overflow: hidden;
  margin-top: 10px;
}

#timer-progress {
  height: 100%;
  width: 100%;
  background: var(--success);
  transition: width 0.1s linear, background-color 0.3s;
}

#video-feed {
  position: absolute;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  object-fit: fill;
  transform: scaleX(-1);
  z-index: 0;
  opacity: 0.4;
  pointer-events: none;
}

@keyframes pop-out {
  0% { transform: translate(-50%, -50%) scale(0.5); opacity: 0; }
  20% { transform: translate(-50%, -50%) scale(1.2); opacity: 1; }
  80% { transform: translate(-50%, -50%) scale(1); opacity: 1; }
  100% { transform: translate(-50%, -50%) scale(1.5); opacity: 0; }
}

.celebrate-anim {
  position: absolute;
  top: 50%;
  left: 50%;
  font-size: 80px;
  font-weight: 800;
  color: var(--success);
  text-shadow: 0 0 30px var(--success);
  animation: pop-out 1s ease-out forwards;
  pointer-events: none;
  z-index: 100;
}