:root {
  --bg: rgba(9, 11, 16, 0.84);
  --panel-border: rgba(255, 255, 255, 0.2);
  --text: #f6f8ff;
  --accent: #d8a55d;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  color: var(--text);
  background: radial-gradient(circle at top right, #2d1f16 0%, #0d1016 65%);
  min-height: 100vh;
  overflow: hidden;
}

canvas,
video {
  position: fixed;
  inset: 0;
}

video {
  object-fit: cover;
  z-index: 0;
}

.hud {
  position: fixed;
  inset: 0;
  pointer-events: none;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 16px;
  z-index: 2;
}

.panel {
  width: min(760px, 100%);
  background: var(--bg);
  border: 1px solid var(--panel-border);
  border-radius: 14px;
  padding: 14px;
  backdrop-filter: blur(8px);
  pointer-events: auto;
}

h1 {
  font-size: 18px;
  margin: 0 0 6px;
}

p {
  margin: 0 0 12px;
  opacity: 0.9;
}

label {
  display: block;
  margin: 10px 0 4px;
  font-size: 13px;
}

input,
select,
button {
  width: 100%;
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 9px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--text);
  padding: 10px;
}

button {
  cursor: pointer;
  background: linear-gradient(120deg, #cc8f3a, #8f5a1f);
  border: none;
  font-weight: 600;
}

button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.row {
  margin-top: 12px;
  display: grid;
  gap: 8px;
}

.row-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.row-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.metrics {
  margin-top: 12px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  font-size: 12px;
}

.metrics span {
  padding: 8px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
}

@media (max-width: 900px) {
  .row-4,
  .row-2,
  .metrics {
    grid-template-columns: 1fr;
  }
}