:root {
  --bg: #f4f4f5;
  --panel: #ffffff;
  --border: #d4d4d8;
  --preview-bg: #202020;
  --text: #1f1f23;
  --accent: #2563eb;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", system-ui, sans-serif;
  font-size: 15px;
}

main {
  max-width: 880px;
  margin: 0 auto;
  padding: 16px;
}

h1 {
  font-size: 1.3rem;
  font-weight: 600;
  margin: 0 0 12px;
}

.preview {
  background: var(--preview-bg);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 320px;
  overflow: hidden;
}

.preview video,
.preview canvas {
  display: block;
  max-width: 100%;
  max-height: 70vh;
  height: auto;
}

.hidden { display: none !important; }

.toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 10px;
  margin-top: 12px;
}

.field {
  display: flex;
  flex-direction: column;
  font-size: 0.85rem;
  color: #52525b;
  gap: 3px;
}

.field select {
  font-size: 0.95rem;
  padding: 5px 8px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--panel);
  min-width: 130px;
}

.spacer { flex: 1 1 auto; }

button {
  font-size: 0.95rem;
  padding: 8px 14px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--panel);
  cursor: pointer;
}

button:hover:not(:disabled) { border-color: var(--accent); }

button:disabled {
  opacity: 0.5;
  cursor: default;
}

#captureBtn {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.folder-info {
  margin: 12px 0 0;
  padding: 0 2px;
  color: #71717a;
  font-size: 0.85rem;
}

.status {
  margin-top: 6px;
  padding: 8px 10px;
  border-top: 1px solid var(--border);
  color: #52525b;
  min-height: 1.2em;
}