:root {
  --bg-color: #f5f7fa;
  --card-bg: #ffffff;
  --text-color: #333;
  --hover-shadow: 0 8px 16px rgba(0,0,0,0.1);
  --primary-color: #007bff;
  --danger-color: #dc3545;
}

body {
  position: relative;
  margin: 0;
  padding: 20px;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: #FFFFFF;
  color: var(--text-color);
  overflow-x: hidden;
}

/* 头部样式 */
header {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  margin-bottom: 30px;
  padding: 0 20px;
}

h1 { 
  margin: 0; 
  font-size: 24px; 
}

.btn-group button {
  padding: 8px 15px;
  margin-left: 10px;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  background-color: var(--primary-color);
  color: white;
  font-size: 14px;
  transition: opacity 0.2s;
}

.btn-group button:hover { 
  opacity: 0.9; 
}

/* 网格布局：自适应屏幕宽度 */
.grid-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 120px));
  gap: 16px;
  /* 防止在小屏幕上挤压变形 */
  min-width: auto;
  width: 100%;
  max-width: 90vw; /* 设置最大宽度为屏幕的90% */
  margin: 0 auto;
}

@media (min-width: 1024px) {
.grid-container {
  max-width: 70vw;
}
}

/* 图标卡片样式 */
.nav-item {
  position: relative;
  background: transparent;
  border-radius: 12px;
  padding: 12px 8px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transition: transform 0.2s, box-shadow 0.2s;
  cursor: pointer;
  text-decoration: none;
  color: inherit;
}

.nav-item:hover {
  background-color: rgba(227, 227, 227, 0.7);
}

.nav-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px; /* 方形圆角 */
  object-fit: cover;
  margin-bottom: 6px;
  background-color: #eee;
}

.nav-title {
  font-size: 13px;
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  width: 100%;
  color: var(--text-color);
}

/* 编辑按钮 - 默认隐藏，悬停显示 */
.edit-btn {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  display: none;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  color: #333;
  cursor: pointer;
  z-index: 2;
}

.edit-btn:hover {
  background: var(--primary-color);
}

.nav-item:hover .edit-btn {
  display: flex;
}

/* 添加按钮样式 */
.add-item {
  border: 2px dashed #ccc;
  background: transparent;
  color: #ccc;
}

.add-item:hover {
  border-color: var(--primary-color);
  color: var(--primary-color);
}

.add-icon {
  font-size: 34px;
  line-height: 52px;
}

/* 弹窗样式 */
.modal-overlay {
  position: fixed;
  top: 0; 
  left: 0; 
  right: 0; 
  bottom: 0;
  background: rgba(0,0,0,0.5);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 100;
}

.modal {
  background: white;
  padding: 25px;
  border-radius: 10px;
  width: 400px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.2);
}

.modal h2 { 
  margin-top: 0; 
}

.form-group { 
  margin-bottom: 15px; 
}

.form-group label { 
  display: block; 
  margin-bottom: 5px; 
  font-weight: bold; 
}

.form-group input { 
  width: 100%; 
  padding: 8px; 
  box-sizing: border-box; 
  border: 1px solid #ddd; 
  border-radius: 4px; 
}

.modal-actions {
  display: flex;
  justify-content: space-between;
  margin-top: 20px;
}

.btn-save { 
  background-color: var(--primary-color); 
  color: white; 
  border: none; 
  padding: 8px 20px; 
  border-radius: 5px; 
  cursor: pointer; 
}

.btn-cancel { 
  background-color: #ccc; 
  color: #333; 
  border: none; 
  padding: 8px 20px; 
  border-radius: 5px; 
  cursor: pointer; 
}

.btn-delete { 
  background-color: var(--danger-color); 
  color: white; 
  border: none; 
  padding: 8px 20px; 
  border-radius: 5px; 
  cursor: pointer; 
}

/* 隐藏的文件输入框 */
#fileInput {
  display: none;
}

/* 设置项样式 */
.setting-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 0;
  border-top: 1px solid #eee;
}

.setting-label {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-color);
}

/* 滑动开关样式 */
.switch {
  position: relative;
  display: inline-block;
  width: 50px;
  height: 24px;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: #ccc;
  transition: .4s;
  border-radius: 24px;
}

.slider:before {
  position: absolute;
  content: "";
  height: 18px;
  width: 18px;
  left: 3px;
  bottom: 3px;
  background-color: white;
  transition: .4s;
  border-radius: 50%;
}

input:checked + .slider {
  background-color: var(--primary-color);
}

input:focus + .slider {
  box-shadow: 0 0 1px var(--primary-color);
}

input:checked + .slider:before {
  transform: translateX(26px);
}

/* 设置面板样式 */
.settings-toggle {
  background: transparent;
  color: var(--text-color);
  border: none;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  font-size: 20px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  margin-left: auto;
}

.settings-panel {
  position: fixed;
  top: 0;
  right: -361px;
  width: 360px;
  height: 100vh;
  background: var(--card-bg);
  backdrop-filter: blur(10px);
  transition: right 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  border-left: 1px solid rgba(255,255,255,0.2);
}

.settings-panel.open {
  right: 0;
  box-shadow: -8px 0 30px rgba(0,0,0,0.2);
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 24px 16px;
  border-bottom: 1px solid #eee;
}

.panel-header span {
  font-size: 18px;
  font-weight: bold;
  color: var(--text-color);
}

.panel-close {
  background: none;
  border: none;
  font-size: 24px;
  cursor: pointer;
  color: #999;
  padding: 4px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}

.panel-close:hover {
  background: rgba(220,53,69,0.1);
  color: var(--danger-color);
}

.panel-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.panel-body button {
  width: 100%;
  padding: 14px;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 500;
  transition: all 0.2s;
}

.panel-body button:first-child {
  background: var(--primary-color);
  color: white;
}

.panel-body button:first-child:hover {
  background: #0056b3;
  transform: translateY(-1px);
}

.panel-body button:nth-child(2) {
  background: #28a745;
  color: white;
}

.panel-body button:nth-child(2):hover {
  background: #218838;
  transform: translateY(-1px);
}

body.wallpaper-enabled::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.5);
  z-index: -1;
  pointer-events: none;
}