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

body {
  font-family: system-ui, sans-serif;
  background-color: #f4f4f4;
  height: 100dvh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

input,
button {
  font-family: inherit;
  padding: 10px;
}

video {
  width: 100%;
  height: 100%;
  background-color: #000;
}

span {
  font-weight: bold;
  font-family: monospace;
}

.page {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  height: 100%;
}

.start-container {
  display: flex;
  gap: 10px;
}

.hidden {
  display: none !important;
}

#chat-toggle {
  position: absolute;
  top: 10px;
  left: 10px;
  font-size: 30px;
  cursor: pointer;
}

#chat-close {
  border: none;
  background-color: inherit;
}

#chat-panel {
  width: 300px;
  height: 100%;
  background-color: #fff;
  border-right: 1px solid #ddd;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

#chat-panel.hidden {
  transform: translateX(-100%);
}

#chat-panel {
  transition: transform 0.3 ease;
}

#chat-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px;
  background-color: #eee;
  border-bottom: 1px solid #ddd;
}

#chat-messages {
  flex: 1;
  padding: 10px;
  overflow-y: auto;
}

#chat-form {
  display: flex;
  border-top: 1px solid #ddd;
}

#chat-form input {
  flex: 1;
  padding: 10px;
  border: none;
  border-right: 1px solid #ddd;
}

#chat-form button {
  border: none;
  background-color: inherit;
}

#video-container {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 10px;
}

#video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 10px;
  width: 100%;
  max-width: 1200px;
}

#video-grid div {
  max-width: 400px;
}

#controls {
  position: absolute;
  bottom: 10px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
}

@media (max-width: 768px) {
  #chat-panel {
    position: absolute;
    left: 0;
    width: 80%;
    max-width: 300px;
    height: 100%;
    z-index: 100;
  }

  #video-grid {
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  }
}