/**
 * 滑动拼图验证码样式
 */

.captcha-container {
    margin: 20px auto;
    user-select: none;
}

.captcha-canvas-wrapper {
    position: relative;
    border-radius: 8px;
    overflow: hidden;
    background: #f5f5f5;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.captcha-canvas {
    display: block;
    width: 100%;
    height: 100%;
}

.captcha-block {
    position: absolute;
    left: 0;
    transition: left 0.1s;
    pointer-events: none;
    /* 拼图块大小由JS动态设置 */
}

.captcha-refresh {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 36px;
    height: 36px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.captcha-refresh:hover {
    background: white;
    transform: rotate(180deg);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.captcha-refresh svg {
    color: #666;
}

.captcha-loading {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid #4facfe;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.captcha-slider {
    margin-top: 15px;
    position: relative;
    height: 42px;
    background: #f7f9fa;
    border-radius: 21px;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
}

.slider-track {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: 21px;
    overflow: hidden;
}

.slider-track-fill {
    height: 100%;
    background: linear-gradient(90deg, #4facfe, #00f2fe);
    transition: width 0.1s;
    border-radius: 21px;
}

.slider-button {
    position: absolute;
    top: 0;
    left: 0;
    width: 42px;
    height: 42px;
    background: white;
    border-radius: 50%;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: grab;
    transition: box-shadow 0.3s, transform 0.1s;
    z-index: 2;
}

.slider-button:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.slider-button.dragging {
    cursor: grabbing;
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.25);
    transform: scale(1.05);
}

.slider-button svg {
    color: #666;
    transition: color 0.3s;
}

.slider-button.success {
    background: #52c41a;
    box-shadow: 0 4px 12px rgba(82, 196, 26, 0.4);
}

.slider-button.success svg {
    color: white;
}

.slider-button.fail {
    background: #ff4d4f;
    box-shadow: 0 4px 12px rgba(255, 77, 79, 0.4);
    animation: shake 0.5s;
}

.slider-button.fail svg {
    color: white;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-5px); }
    20%, 40%, 60%, 80% { transform: translateX(5px); }
}

.slider-text {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #999;
    font-size: 14px;
    pointer-events: none;
    z-index: 1;
}

.captcha-status {
    margin-top: 10px;
    text-align: center;
    font-size: 14px;
    min-height: 20px;
}

.captcha-status.success {
    color: #52c41a;
}

.captcha-status.fail {
    color: #ff4d4f;
}

/* 响应式设计 */
@media (max-width: 480px) {
    /*
     * 重要：
     * 这里不能强行把 canvas（尤其是 .captcha-block 拼图块）拉伸为 100% 宽高，
     * 否则会导致拼图块被放大/遮挡/错位（移动端常见“显示异常”问题）。
     *
     * 组件的坐标与裁剪尺寸由 JS 按 options.width/height 计算，
     * 因此在移动端只做轻量的间距调整，保持 canvas 的原始像素尺寸。
     */
    .captcha-container {
        margin: 15px auto;
    }
}