/* 移动端下载页面 */

* {
  box-sizing: border-box;
}

.app {
  width: 100vw;
  height: 100vh;
  background: url('../img/launch.png') no-repeat center center;
  background-size: cover;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding: 0 20px calc(50px + env(safe-area-inset-bottom, 0px)) 20px;
}

.loading {
  text-align: center;
  padding: 16px 20px;
  color: #666;
  font-size: 14px;
  background: rgba(255, 255, 255, 0.95);
  border-radius: 12px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.1);
}

.download-container {
  display: flex;
  flex-direction: column;
  gap: 12px;
  width: 100%;
  max-width: 500px;
}

.btn {
  display: block;
  width: 100%;
  padding: 16px 20px;
  border-radius: 12px;
  text-decoration: none;
  color: #fff;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
  transition: transform 0.2s ease;
}

.btn:active {
  transform: scale(0.98);
}

.btn.android {
  background: linear-gradient(135deg, #4CAF50 0%, #388E3C 100%);
}

.btn.ios {
  background: linear-gradient(135deg, #2196F3 0%, #1976D2 100%);
}

.btn-content {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.btn-platform {
  font-size: 11px;
  font-weight: 500;
  opacity: 0.8;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.btn-text {
  font-size: 16px;
  font-weight: 600;
  margin: 2px 0;
}

.btn-meta {
  font-size: 12px;
  opacity: 0.75;
  font-weight: 400;
}

/* 小屏幕优化 */
@media (max-width: 375px) {
  .app {
    padding-left: 16px;
    padding-right: 16px;
  }

  .btn {
    padding: 14px 18px;
  }

  .btn-platform {
    font-size: 10px;
  }

  .btn-text {
    font-size: 15px;
  }

  .btn-meta {
    font-size: 11px;
  }
}

/* 大屏幕优化 */
@media (min-width: 768px) {
  .download-container {
    max-width: 480px;
  }

  .btn {
    padding: 18px 24px;
    border-radius: 14px;
  }

  .btn-platform {
    font-size: 12px;
  }

  .btn-text {
    font-size: 18px;
  }

  .btn-meta {
    font-size: 13px;
  }
}

/* 横屏优化 */
@media (orientation: landscape) and (max-height: 600px) {
  .app {
    padding-bottom: calc(30px + env(safe-area-inset-bottom, 0px));
  }

  .download-container {
    gap: 10px;
  }

  .btn {
    padding: 12px 16px;
  }

  .btn-platform {
    font-size: 10px;
  }

  .btn-text {
    font-size: 14px;
    margin: 1px 0;
  }

  .btn-meta {
    font-size: 11px;
  }
}