body {
  margin: 0; font-family: "Helvetica Neue", sans-serif;
  background: url('background.jpg') no-repeat center center fixed;
  background-size: cover;
  overflow-x: hidden;
}
.notification {
  width: 100%;
  background: rgba(255,255,255,0.95);
  color: #333;
  padding: 12px 10px;
  text-align: center;
  font-weight: bold;
  position: fixed;
  top: 0; left: 0;
  z-index: 9999;
  box-shadow: 0 2px 6px rgba(0,0,0,0.2);
  transform: translateY(-100%);
  transition: transform 0.5s ease;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.notification.show {
  transform: translateY(0);
}
.loader-wrapper {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  color: #333;
  padding: 10px;
}
.spinner {
  border: 4px solid #f3f3f3;
  border-top: 4px solid #FF5722;
  border-radius: 50%;
  width: 40px; height: 40px;
  animation: spin 1s linear infinite;
  margin: 20px auto;
}
@keyframes spin {
  0% {transform: rotate(0deg);}
  100% {transform: rotate(360deg);}
}
.modal {
  position: fixed;
  bottom: 0;
  width: 100%;
  max-width: 480px;
  left: 50%;
  transform: translateX(-50%) translateY(100%);
  background: rgba(255,255,255,0.95);
  padding: 24px 20px 32px;
  box-shadow: 0 -2px 10px rgba(0,0,0,0.2);
  border-top-left-radius: 16px;
  border-top-right-radius: 16px;
  transition: transform 0.6s ease;
  box-sizing: border-box;
  z-index: 10000;
}
.modal.show {
  transform: translateX(-50%) translateY(0);
}
.profile-icon {
  width: 80px; height: 80px;
  border-radius: 50%;
  background: #ccc center center / cover no-repeat;
  margin: 0 auto 12px;
}
.profile-name {
  font-weight: bold;
  font-size: 1.4em;
  text-align: center;
  margin-bottom: 12px;
}
.message {
  font-size: 1em;
  text-align: center;
  line-height: 1.4;
}
.line-button {
  display: block;
  width: 100%;
  background: #FF5722;
  color: #fff;
  font-weight: bold;
  text-align: center;
  border-radius: 8px;
  padding: 14px 0;
  margin-top: 20px;
  text-decoration: none;
  font-size: 1.1em;
  box-shadow: 0 6px 12px rgba(255, 87, 34, 0.5);
  transition: background-color 0.3s ease, box-shadow 0.3s ease;
}
.line-button:hover {
  background-color: #E64A19;
  box-shadow: 0 8px 16px rgba(230, 74, 25, 0.7);
}
.note {
  margin-top: 10px;
  font-size: 0.9em;
  color: #666;
  text-align: center;
}
@media (max-width: 480px) {
  .modal {
    max-width: 100%;
    padding: 20px 16px 28px;
    border-radius: 12px 12px 0 0;
  }
  .profile-icon {
    width: 72px;
    height: 72px;
    margin-bottom: 10px;
  }
  .profile-name {
    font-size: 1.2em;
    margin-bottom: 10px;
  }
  .line-button {
    font-size: 1em;
    padding: 12px 0;
  }
}