:root {
  color-scheme: dark;
  --bg: #090d16;
  --panel: #111a2a;
  --border: #26354d;
  --accent: #55e6bd;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 16px;
  background: var(--bg);
  color: #edf5ff;
  font-family: Arial, sans-serif;
}

main {
  max-width: 850px;
  margin: auto;
}

h1 {
  color: var(--accent);
}

.subtitle, #fileName, .small {
  color: #94a7c1;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px;
  margin: 15px 0;
}

h2 {
  font-size: 17px;
}

button, select, input[type=file], input[type=number] {
  background: #1b2940;
  color: white;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 11px;
  margin: 4px 2px;
}

button {
  cursor: pointer;
}

button:active {
  background: #087f69;
}

input[type=range] {
  display: block;
  width: 100%;
  accent-color: var(--accent);
  margin: 12px 0 20px;
}

label {
  display: flex;
  justify-content: space-between;
  color: #b6c8dc;
}

canvas {
  display: block;
  width: 100%;
  height: 140px;
  background: #080d17;
  border: 1px solid var(--border);
  border-radius: 9px;
  margin: 12px 0 22px;
}

#status, #exportStatus {
  color: var(--accent);
  font-size: 13px;
  overflow-wrap: anywhere;
}