/* ===== 全局样式 ===== */
.qrcode-wrap {
  max-width: 1100px;
  margin: 0 auto;
  padding: 30px;
  text-align: center;
}

body {
  font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: var(--bg);
  color: var(--text);
  margin: 0;
  transition: background 0.3s, color 0.3s;
}

:root {
  --bg: #f9f9f9;
  --text: #111;
  --nav-bg: #3d85c6;
  --card-bg: #fff;
  --border-color: #ddd;
}

html[data-user-color-scheme='dark'] {
  --bg: #1f1f1f;
  --text: #eee;
  --nav-bg: #2f3b4a;
  --card-bg: #2b2b2b;
  --border-color: #444;
}

.navbar {
  background-color: var(--nav-bg) !important;
}

.page-title {
  margin-top: 130px;
  /* font-size: 28px;
  font-weight: bold; */
}

/* 返回按钮 */
.back-btn {
  display: inline-block;
  margin: 15px 0 30px;
  padding: 10px 18px;
  background: #3d85c6;
  color: #fff;
  border-radius: 6px;
  text-decoration: none;
  font-size: 15px;
  transition: background 0.2s;
}

.back-btn:hover {
  background: #2563eb;
}

/* 功能切换按钮 */
.switch-btns {
  margin: 30px 0;
}

.switch-btns button {
  width: 140px;
  height: 50px;
  font-size: 18px;
  margin: 0 15px;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  background: linear-gradient(90deg, #3d85c6, #60a5fa);
  color: #fff;
  transition: transform 0.2s, box-shadow 0.2s;
}

.switch-btns button:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

/* 功能区容器 */
.generator {
  display: none;
}

.generator.active {
  display: block;
}

/* 输入框 */
input[type='text'] {
  width: 85%;
  max-width: 600px;
  padding: 20px;
  margin: 20px 0;
  font-size: 18px;
  border: 2px solid var(--border-color);
  border-radius: 10px;
  text-align: center;
  background: var(--card-bg);
  color: var(--text);
}

input[type='text']:focus {
  outline: none;
  border-color: #3d85c6;
  box-shadow: 0 0 8px rgba(61, 133, 198, 0.4);
}

html[data-user-color-scheme='dark'] input[type='text']:focus {
  border-color: #60a5fa;
  box-shadow: 0 0 8px rgba(96, 165, 250, 0.6);
}

/* 操作按钮 */
.action-btn {
  padding: 12px 26px;
  margin: 8px;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  background: #3d85c6;
  color: #fff;
  font-size: 16px;
  transition: background 0.2s, transform 0.2s;
}

.action-btn:hover {
  background: #2563eb;
  transform: translateY(-2px);
}

.btn-group {
  margin-top: 15px;
  text-align: center;
  display: flex;
  justify-content: center;
  gap: 15px;
}

/* 输出区 */
.output {
  margin-top: 30px;
  min-height: 220px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.output img,
.output svg {
  display: block;
  margin: 0 auto;
  border-radius: 8px;
}

/* Logo 拖拽上传区 */
.logo-section {
  margin: 25px 0;
  font-size: 15px;
  color: var(--text);
}

.drop-zone {
  border: 2px dashed #3d85c6;
  border-radius: 10px;
  padding: 25px;
  margin: 15px auto;
  width: 85%;
  max-width: 450px;
  cursor: pointer;
  color: #666;
  background: var(--card-bg);
  transition: background 0.2s, border-color 0.2s;
}

.drop-zone.hover {
  background: #f0f8ff;
  border-color: #2563eb;
}

.logo-slider {
  margin: 20px 0;
}

#logoSize {
  vertical-align: middle;
  margin: 0 8px;
}

/* 扫码结果 */
#scanResult {
  margin-top: 20px;
  font-size: 18px;
  font-weight: bold;
  color: #3d85c6;
  padding: 12px;
  border-radius: 6px;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
}

/* 手机端适配 */
@media (max-width: 600px) {
  .switch-btns button {
    display: block;
    margin: 12px auto;
    width: 85%;
    height: 55px;
  }

  input[type='text'] {
    width: 90%;
  }

  .output img {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: #fff;
    padding: 5px;
  }
}


/* 固定蓝色导航栏（覆盖全局透明/渐变逻辑） */
#kopf-bar {
  background: linear-gradient(90deg, #3D85C6 0%, #52A2E6 100%) !important;
  box-shadow: 0 2px 10px rgba(0,0,0,0.25);
  transition: none !important;
}

/* 暗色模式下使用深蓝渐变 */
html[data-user-color-scheme='dark'] #kopf-bar {
  background: linear-gradient(90deg, #1f3144 0%, #2b82cf 100%) !important;
  box-shadow: 0 2px 12px rgba(0,0,0,0.5);
}

/* 确保文字/图标颜色在白底页也清晰 */
#kopf-bar .kopf-btn,
#kopf-bar .kopf-icon {
  color: #ffffff !important;
  fill: #ffffff !important;
}