:root {
  --bg: #f4f1ea;
  --ink: #1f2937;
  --accent: #0f766e;
  --surface: #ffffff;
  --danger: #b91c1c;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(135deg, #f4f1ea, #e9f5ef);
  color: var(--ink);
}

.app {
  width: min(900px, 100%);
  margin: 0 auto;
  padding: 12px;
}

h1 {
  margin: 0 0 8px;
  font-size: 1.4rem;
}

.status {
  margin: 0 0 10px;
  font-size: 0.95rem;
}

.status.error {
  color: var(--danger);
  font-weight: 600;
}

.preview-wrap {
  width: 100%;
  height: 75vh;
  background: #0b0f14;
  border-radius: 10px;
  overflow: hidden;
}

video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

button {
  width: 100%;
  margin-top: 12px;
  border: 0;
  border-radius: 10px;
  padding: 14px 16px;
  font-size: 1rem;
  font-weight: 700;
  background: var(--accent);
  color: #fff;
}

button:disabled {
  opacity: 0.5;
}

.result {
  margin-top: 12px;
  background: var(--surface);
  border-radius: 10px;
  padding: 12px;
}

.result h2 {
  margin: 0 0 8px;
  font-size: 1.05rem;
}

pre {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-word;
  font-size: 0.95rem;
}

.hidden {
  display: none;
}