:root {
  --bg: #ffffff;
  --fg: #16181d;
  --muted: #5c6370;
  --line: #d7dae0;
  --accent: #2f6feb;
  --error: #b4243a;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14161a;
    --fg: #e6e8ec;
    --muted: #9aa1ad;
    --line: #2c3038;
    --accent: #6ea0ff;
    --error: #ff8095;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif;
}

main {
  max-width: 60rem;
  margin: 0 auto;
  padding: 2rem 1rem 4rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

header h1 {
  margin: 0;
  font-size: 1.75rem;
  letter-spacing: -0.02em;
}

header p {
  margin: 0.25rem 0 0;
  color: var(--muted);
}

.dropzone {
  border: 2px dashed var(--line);
  border-radius: 0.75rem;
  padding: 2rem 1rem;
  text-align: center;
  transition: border-color 0.15s, background 0.15s;
}

.dropzone.dragging {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 8%, transparent);
}

.dropzone p {
  margin: 0 0 0.75rem;
  color: var(--muted);
}

.dropzone input[type="file"] {
  display: none;
}

.url {
  display: flex;
  gap: 0.5rem;
}

.url input {
  flex: 1;
  min-width: 0;
}

.controls {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.controls label {
  color: var(--muted);
  white-space: nowrap;
}

.controls input[type="range"] {
  flex: 1;
  min-width: 10rem;
  accent-color: var(--accent);
}

.hidden {
  display: none;
}

input[type="url"] {
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  background: var(--bg);
  color: var(--fg);
  font: inherit;
}

button,
.button {
  display: inline-block;
  padding: 0.5rem 0.9rem;
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  background: transparent;
  color: var(--fg);
  font: inherit;
  cursor: pointer;
}

button:hover,
.button:hover {
  border-color: var(--accent);
  color: var(--accent);
}

pre {
  margin: 0;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 0.75rem;
  overflow-x: auto;
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 10px;
  line-height: 1;
  white-space: pre;
}

.error {
  margin: 0;
  color: var(--error);
}