:root {
  --bg: #0e0f12;
  --panel: #16181d;
  --border: #262932;
  --text: #e8eaed;
  --muted: #9aa0a6;
  --accent: #7c5cff;
  --accent-hover: #6b4aff;
  --error: #ff6b6b;
  --ok: #4ade80;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  line-height: 1.5;
}

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 48px 24px 96px;
}

header h1 {
  font-size: 32px;
  margin: 0 0 8px;
  letter-spacing: -0.02em;
}

.sub {
  color: var(--muted);
  margin: 0 0 32px;
}

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

form {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
  display: grid;
  gap: 20px;
}

.field { display: grid; gap: 8px; }
.field label { font-weight: 600; font-size: 14px; }

input[type="file"] {
  background: #0b0c10;
  border: 1px solid var(--border);
  color: var(--text);
  padding: 10px;
  border-radius: 8px;
  width: 100%;
}

.preview {
  display: none;
  margin-top: 8px;
  border-radius: 8px;
  overflow: hidden;
  max-width: 240px;
}
.preview.show { display: block; }
.preview img, .preview video { width: 100%; display: block; }

button {
  background: var(--accent);
  color: white;
  border: 0;
  padding: 12px 16px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
}
button:hover:not(:disabled) { background: var(--accent-hover); }
button:disabled { opacity: 0.5; cursor: not-allowed; }

section {
  margin-top: 32px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
}
section h2 { margin: 0 0 12px; font-size: 18px; }
.hidden { display: none; }

#result_video { width: 100%; border-radius: 8px; background: black; }

.logs {
  background: #0b0c10;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px;
  font-size: 12px;
  max-height: 200px;
  overflow: auto;
  white-space: pre-wrap;
  color: var(--muted);
}

footer { margin-top: 48px; }
.muted { color: var(--muted); font-size: 13px; }

.error { color: var(--error); }
.ok { color: var(--ok); }