/* 图标基础样式 */
.material-icons {
    font-family: 'Material Icons', serif;
    font-weight: normal;
    font-style: normal;
    font-size: 24px;
    line-height: 1;
    letter-spacing: normal;
    text-transform: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    white-space: nowrap;
    word-wrap: normal;
    direction: ltr;
    -webkit-font-smoothing: antialiased;
    vertical-align: middle;
}

/* 导航图标大小调整 */
.nav-item__icon {
    font-size: 20px;
    width: 24px;
    height: 24px;
}

/* 按钮图标样式 */
.button__icon {
    font-size: 18px;
    margin-right: 8px;
}

/* 特定图标颜色 */
.icon-primary {
    color: var(--md-sys-color-primary);
}

.icon-on-primary {
    color: var(--md-sys-color-on-primary);
}

.icon-surface-variant {
    color: var(--md-sys-color-on-surface-variant);
}