* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  background: #29282d;
  color: #f5f5f5;
  font-family: Arial, Helvetica, sans-serif;
  overflow: hidden;
}

.topbar {
  height: 56px;
  display: flex;
  align-items: center;
  padding: 0 28px;
  border-bottom: 2px solid #4a494e;
  background: #29282d;
  position: relative;
  z-index: 10;
}

.download-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  width: fit-content;
  color: #f4f4f4;
  text-decoration: none;
  font-size: 14px;
  font-weight: 400;
  cursor: pointer;
  user-select: none;
}

.download-icon {
  width: 26px;
  height: 26px;
  flex: 0 0 26px;
}

.content {
  position: relative;
  width: 100%;
  height: calc(100vh - 56px);
  overflow: hidden;
  padding: 20px;
  cursor: default;
  touch-action: none;
  -webkit-user-select: none;
  overscroll-behavior: none;
}

.content.dragging {
  cursor: grabbing;
}

.main-image {
  display: block;
  width: min(38vw, 520px);
  height: auto;
  background: #fff;
  position: absolute;
  left: 50%;
  top: 20px;
  transform: translateX(-50%);
  user-select: none;
  -webkit-user-drag: none;
  cursor: grab;
  touch-action: none;
  transform-origin: center top;
}

@media (max-width: 600px) {
  .topbar {
    height: 56px;
    padding: 0 24px;
  }

  .download-btn {
    font-size: 14px;
    gap: 6px;
  }

  .download-icon {
    width: 26px;
    height: 26px;
    flex: 0 0 26px;
  }

  .content {
    height: calc(100vh - 56px);
    padding: 18px 12px;
  }

  .main-image {
    width: min(88vw, 630px);
    top: 18px;
  }
}