/* 二维码功能样式 */

/* ========== 悬浮按钮 ========== */
#qr-btn {
    position: fixed;
    bottom: 100px;
    left: 20px;
    width: 44px;
    height: 44px;
    padding: 0;
    border-radius: 50%;
    background: #4a90e2;
    color: #fff;
    border: none;
    font-size: 12px;
    font-weight: bold;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(0,0,0,0.3);
    z-index: 1000;
    display: none;
    white-space: nowrap;
}

#qr-btn.show {
    display: block;
}

#qr-btn:hover {
    background: #3a7bc8;
}

/* ========== 弹窗 ========== */
#qr-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    z-index: 10000;
    justify-content: center;
    align-items: center;
}

#qr-modal.active {
    display: flex;
}

.qr-box {
    background: #fff;
    border-radius: 8px;
    width: 320px;
    max-width: 90%;
}

.qr-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    border-bottom: 1px solid #eee;
}

.qr-header h3 {
    margin: 0;
    font-size: 16px;
}

.qr-close {
    background: none;
    border: none;
    font-size: 24px;
    color: #999;
    cursor: pointer;
}

.qr-body {
    padding: 20px;
}

#qr-input {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
    box-sizing: border-box;
}

#qr-preview {
    margin-top: 15px;
    min-height: 128px;
    display: flex;
    justify-content: center;
    align-items: center;
    background: #f5f5f5;
    border-radius: 4px;
}

#qr-preview canvas {
    display: block;
}

.qr-footer {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    padding: 15px 20px;
    border-top: 1px solid #eee;
}

.qr-btn {
    padding: 8px 16px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
}

.qr-cancel {
    background: #f0f0f0;
    color: #333;
}

.qr-ok {
    background: #4a90e2;
    color: #fff;
}

/* ========== 画布上的二维码 ========== */
.qr-item {
    position: absolute;
    cursor: move;
    user-select: none;
    touch-action: none;
}

/* 选中状态 */
.qr-item.qr-selected {
    outline: 2px solid #4a90e2;
    outline-offset: 2px;
}

/* 删除按钮 */
.qr-delete-btn {
    position: absolute;
    top: -10px;
    right: -10px;
    width: 20px;
    height: 20px;
    background: #ff4444;
    color: #fff;
    border: none;
    border-radius: 50%;
    font-size: 16px;
    line-height: 20px;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 100;
    padding: 0;
    margin: 0;
}

.qr-item.qr-selected .qr-delete-btn {
    display: flex;
}

.qr-delete-btn:hover {
    background: #cc0000;
}

/* ========== 二维码工具栏 - 与背景图工具栏保持一致 ========== */
.qr-tools {
    display: none;
}

.qr-tools.active {
    display: flex;
}

/* 数值显示固定宽度，单独占位 */
#qrOpacityValue, #qrScaleValue {
    display: inline-block;
    min-width: 40px;
    text-align: center;
}