* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background: #111;
  color: #eee;
  font-family: 'Segoe UI', sans-serif;
  overflow: hidden;
  width: 100vw;
  height: 100vh;
}

#container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

/* ── Upload UI ── */
#upload-ui {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  z-index: 10;
  background: rgba(0, 0, 0, 0.85);
  padding: 48px 64px;
  border-radius: 16px;
  border: 1px solid #333;
  backdrop-filter: blur(12px);
}

#upload-ui.hidden {
  display: none;
}

#upload-ui h1 {
  font-size: 2.4rem;
  margin-bottom: 12px;
  letter-spacing: 4px;
  font-weight: 300;
}

#upload-ui p {
  font-size: 0.95rem;
  color: #999;
  margin-bottom: 32px;
}

#video-input {
  display: none;
}

#upload-label {
  display: inline-block;
  padding: 14px 40px;
  background: #fff;
  color: #111;
  border-radius: 8px;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 600;
  transition: background 0.2s, transform 0.15s;
}

#upload-label:hover {
  background: #ddd;
  transform: scale(1.03);
}

/* ── Status bar ── */
#status-bar {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 20;
  background: rgba(0, 0, 0, 0.8);
  padding: 10px 24px;
  border-radius: 8px;
  border: 1px solid #444;
  font-size: 0.85rem;
  color: #ccc;
  backdrop-filter: blur(8px);
  white-space: nowrap;
}

#status-bar.hidden {
  display: none;
}

/* ── Controls ── */
#controls {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  display: flex;
  gap: 20px;
  align-items: center;
  background: rgba(0, 0, 0, 0.75);
  padding: 12px 24px;
  border-radius: 12px;
  border: 1px solid #333;
  backdrop-filter: blur(8px);
}

#controls.hidden {
  display: none;
}

.control-group {
  display: flex;
  align-items: center;
  gap: 6px;
}

.control-group label {
  font-size: 0.78rem;
  color: #aaa;
  white-space: nowrap;
}

.control-group input[type="range"] {
  width: 100px;
  accent-color: #fff;
}

.control-group button {
  padding: 5px 14px;
  background: #333;
  color: #eee;
  border: 1px solid #555;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.78rem;
  transition: background 0.2s;
  white-space: nowrap;
}

.control-group button:hover {
  background: #555;
}

.control-group button.active {
  background: #0066FF;
  border-color: #0088FF;
}