* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 24px;
  background: #14161a;
  color: #e8eaed;
  font-family: -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
  max-width: 960px;
  margin-inline: auto;
}

header h1 {
  margin: 0 0 4px;
  font-size: 24px;
}

.subtitle {
  margin: 0 0 20px;
  color: #9aa0a6;
  font-size: 14px;
}

.controls {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 16px;
  padding: 14px;
  background: #1c1f24;
  border-radius: 10px;
  border: 1px solid #2a2e35;
}

.control-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.btn {
  padding: 9px 16px;
  border-radius: 8px;
  border: 1px solid #3a3f47;
  background: #262a30;
  color: #e8eaed;
  font-size: 14px;
  cursor: pointer;
  text-align: center;
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.btn-primary {
  background: #2f6feb;
  border-color: #2f6feb;
}

.btn-danger {
  background: #a7302a;
  border-color: #a7302a;
}

.select-label,
.checkbox-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: #c7cbd1;
}

.select-label select {
  background: #262a30;
  color: #e8eaed;
  border: 1px solid #3a3f47;
  border-radius: 6px;
  padding: 4px 6px;
}

.stage {
  position: relative;
  width: 100%;
  background: #000;
  border-radius: 10px;
  overflow: hidden;
  min-height: 200px;
}

#video {
  display: none;
}

#canvas {
  display: block;
  width: 100%;
  height: auto;
}

.banner {
  position: absolute;
  top: 12px;
  left: 50%;
  transform: translateX(-50%);
  padding: 10px 20px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 15px;
  background: rgba(167, 48, 42, 0.92);
  color: #fff;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.4);
}

.banner.balanced {
  background: rgba(43, 138, 62, 0.92);
}

.hidden {
  display: none !important;
}

.loading-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.6);
  font-size: 16px;
}

.status-panel {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-top: 16px;
}

.status-item {
  background: #1c1f24;
  border: 1px solid #2a2e35;
  border-radius: 8px;
  padding: 10px 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.status-label {
  font-size: 12px;
  color: #9aa0a6;
}

.status-value {
  font-size: 15px;
  font-weight: 600;
}

.disclaimer {
  margin-top: 16px;
  font-size: 12px;
  line-height: 1.6;
  color: #7c8189;
}

@media (max-width: 640px) {
  .status-panel {
    grid-template-columns: repeat(2, 1fr);
  }
}