body {
  font-family: Arial, sans-serif;
  background: #f2f2f2;
  margin: 0;
  padding: 0;
}
.container {
  max-width: 500px;
  margin: 2rem auto;
  background: #fff;
  border-radius: 10px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  padding: 2rem 1rem;
}
h1 {
  text-align: center;
  color: #333;
}
#register-section, #main-section {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
input[type="text"], input[type="date"] {
  padding: 0.7rem;
  border: 1px solid #ccc;
  border-radius: 5px;
  font-size: 1rem;
}
button {
  padding: 0.7rem;
  background: #007bff;
  color: #fff;
  border: none;
  border-radius: 5px;
  font-size: 1rem;
  cursor: pointer;
  transition: background 0.2s;
}
button:hover {
  background: #0056b3;
}
.user-info {
  display: flex;
  justify-content: space-between;
  font-size: 0.95rem;
  color: #555;
}
#logs {
  min-height: 2rem;
  background: #f9f9f9;
  border-radius: 5px;
  padding: 0.5rem;
  font-size: 0.95rem;
  color: #444;
  margin-bottom: 0.5rem;
}
.video-section {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin: 1rem 0;
}
.video-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
}
video {
  width: 100%;
  max-width: 220px;
  height: 180px;
  background: #000;
  border-radius: 8px;
  margin-bottom: 0.3rem;
}
.video-label {
  text-align: center;
  font-size: 0.9rem;
  color: #666;
}
.controls {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 1rem;
}
@media (max-width: 600px) {
  .container {
    max-width: 100vw;
    padding: 1rem 0.2rem;
  }
  .video-section {
    flex-direction: column;
    gap: 0.5rem;
  }
  video {
    max-width: 100vw;
    height: 160px;
  }
}