:root {
  --bg: #0e0f13;
  --panel: rgba(18, 20, 26, 0.8);
  --text: #e8ebf0;
  --muted: #a7adbb;
  --accent: #7bdcff;
  /* signal native controls to prefer dark popups */
  color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  color: var(--text);
  background: radial-gradient(1200px 800px at 70% 10%, #141723 0%, var(--bg) 40%, #0b0c10 100%);
  overflow: hidden;
}

#glcanvas {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  display: block;
  z-index: 1; /* Canvas unter die UI legen */
}

.hint {
  position: fixed;
  right: 16px;
  bottom: 16px;
  z-index: 3;
  padding: 8px 12px;
  background: rgba(0,0,0,0.55);
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: 10px;
  color: var(--text);
  font-size: 14px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.35);
}

.ui {
  position: fixed;
  left: 16px;
  right: 16px;
  top: 14px;
  display: grid;
  gap: 10px;
  pointer-events: none;
  z-index: 2; /* UI über dem Canvas anzeigen */
}
.ui.hidden { display: none; }

.ui .row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
  background: var(--panel);
  border: 1px solid rgba(255,255,255,0.06);
  backdrop-filter: blur(8px);
  border-radius: 12px;
  padding: 8px 10px;
  pointer-events: auto;
  box-shadow: 0 6px 24px rgba(0,0,0,0.25);
}

.ui .row.header {
  align-items: center;
}
.ui .row .spacer { flex: 1 1 auto; }

.badge {
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  padding: 4px 8px;
  border-radius: 999px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  color: var(--muted);
}

button, .file span, select, input[type="range"] {
  appearance: none;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(255,255,255,0.04);
  color: var(--text);
  padding: 8px 12px;
  border-radius: 10px;
  cursor: pointer;
  font-size: 14px;
}
button:hover, .file span:hover, select:hover {
  border-color: rgba(255,255,255,0.24);
}
button:active { transform: translateY(1px); }
button.active {
  background: rgba(123,220,255,0.18);
  border-color: rgba(123,220,255,0.6);
}

.file input { display: none; }
.file span { display: inline-block; }

.sliders label {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
}
.sliders input[type="range"] {
  width: 140px;
  cursor: ew-resize;
}
.sliders select { background: rgba(255,255,255,0.04); }

/* Native select theming (options popup) */
select {
  background-color: rgba(255,255,255,0.04);
  color: var(--text);
}
select:focus, select:focus-visible {
  outline: none;
  border-color: rgba(123,220,255,0.6);
  box-shadow: 0 0 0 3px rgba(123,220,255,0.25);
}
select option, select optgroup {
  background-color: #141723; /* dark popup background */
  color: var(--text);
}
select option:checked {
  background-color: #215c79; /* highlight */
  color: #ffffff;
}
select optgroup {
  color: var(--muted);
}

/* Improve native accents for controls that respect it */
input[type="checkbox"], input[type="radio"], input[type="range"], select { accent-color: #59c4ff; }

.drop {
  align-items: center;
  justify-content: flex-start;
  gap: 12px;
  min-height: 64px;
}
.drop.dragover {
  outline: 2px dashed var(--accent);
  box-shadow: inset 0 0 0 2px rgba(123,220,255,0.3);
}
#preview {
  height: 42px;
  width: 42px;
  object-fit: cover;
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,0.15);
  display: none;
}
#status { color: var(--muted); }
.progress {
  position: relative;
  flex: 1 1 160px;
  height: 10px;
  background: rgba(255,255,255,0.06);
  border-radius: 6px;
  overflow: hidden;
}
#progressBar {
  position: absolute;
  inset: 0 auto 0 0;
  width: 0%;
  background: linear-gradient(90deg, #44c6ff, #8de3ff);
}
.counts { color: var(--muted); margin-left: auto; }

/* Help modal */
.help {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  background: rgba(0,0,0,0.45);
  z-index: 3;
}
.help.hidden { display: none; }
.help .card {
  width: min(92vw, 560px);
  background: var(--panel);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 12px;
  box-shadow: 0 12px 36px rgba(0,0,0,0.45);
}
.help .head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.help .body { padding: 12px; color: var(--text); }
.help kbd {
  background: rgba(255,255,255,0.1);
  padding: 2px 6px;
  border-radius: 6px;
  border: 1px solid rgba(255,255,255,0.18);
}