html,
body {
  margin: 0;
  padding: 0;
  background: white;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

canvas {
  display: block;
}



#game {


  display: none;
}

/* ---- Login Screen ---- */
#login-container {
  display: flex;
  justify-content: center;
  align-items: center;
  position: fixed;
  inset: 0;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  z-index: 9999;
}

.login-card {
  background: #fff;
  border-radius: 16px;
  padding: 40px 36px 32px;
  width: 340px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, .25);
  text-align: center;
}

.login-card h1 {
  margin: 0 0 4px;
  font-size: 26px;
  color: #1a1a2e;
}

.login-subtitle {
  margin: 0 0 24px;
  color: #666;
  font-size: 14px;
}

.login-card input {
  display: block;
  width: 100%;
  padding: 12px 14px;
  margin-bottom: 12px;
  border: 1px solid #ddd;
  border-radius: 8px;
  font-size: 15px;
  box-sizing: border-box;
  transition: border-color .2s;
}

.login-card input:focus {
  outline: none;
  border-color: #667eea;
}

.login-buttons {
  display: flex;
  gap: 10px;
  margin-bottom: 8px;
}

.login-buttons button {
  flex: 1;
  padding: 11px 0;
  border: none;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: opacity .2s;
}

.login-buttons button:hover {
  opacity: .85;
}

.login-buttons button:first-child {
  background: #667eea;
  color: #fff;
}

.login-buttons button.secondary {
  background: #e8eaf6;
  color: #333;
}

.login-divider {
  display: flex;
  align-items: center;
  margin: 16px 0;
  color: #aaa;
  font-size: 13px;
}

.login-divider::before,
.login-divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: #ddd;
}

.login-divider span {
  padding: 0 12px;
}

.google-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  padding: 11px 0;
  border: 1px solid #ddd;
  border-radius: 8px;
  background: #fff;
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  transition: background .2s, box-shadow .2s;
}

.google-btn:hover {
  background: #f7f7f7;
  box-shadow: 0 2px 8px rgba(0, 0, 0, .08);
}

.login-error {
  color: #e53935;
  font-size: 13px;
  margin-top: 12px;
  min-height: 18px;
}

/* ---- User Bar (when logged in) ---- */
#user-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 48px;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid #e0e0e0;
  display: flex;
  align-items: center;
  padding: 0 16px;
  gap: 10px;
  z-index: 1000;
  box-sizing: border-box;
}

.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  object-fit: cover;
}

.user-avatar-placeholder {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: #667eea;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 14px;
}

.user-name {
  font-size: 14px;
  color: #333;
  font-weight: 500;
}

#btn-signout {
  margin-left: auto;
  padding: 6px 16px;
  border: 1px solid #ddd;
  border-radius: 6px;
  background: #fff;
  font-size: 13px;
  cursor: pointer;
  transition: background .2s;
}

#btn-signout:hover {
  background: #f5f5f5;
}