/* ========== 拖拽滑块验证码样式 ========== */
.slider-captcha-wrap {
    width: 100%;
    max-width: 320px;
    margin: 0 auto;
    user-select: none;
    -webkit-user-select: none;
}

.slider-captcha-track {
    position: relative;
    width: 100%;
    height: 44px;
    background: #f0f2f5;
    border-radius: 22px;
    overflow: hidden;
    border: 1.5px solid #e0e3e8;
    box-shadow: inset 0 2px 4px rgba(0,0,0,.04);
}

/* 轨道背景文字 */
.slider-captcha-track .track-text {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    display: flex; align-items: center; justify-content: center;
    font-size: 14px; color: #b0b5bd;
    letter-spacing: 1px;
    pointer-events: none;
    transition: color 0.3s;
    z-index: 1;
}

/* 已通过区域 */
.slider-captcha-track .track-progress {
    position: absolute;
    top: 0; left: 0; bottom: 0;
    width: 0;
    background: linear-gradient(90deg, #e8f8ef, #c8f0d8);
    border-radius: 22px 0 0 22px;
    transition: width 0.05s linear;
    z-index: 0;
}

/* 滑块按钮 */
.slider-captcha-btn {
    position: absolute;
    top: 2px; left: 2px;
    width: 40px; height: 38px;
    background: #fff;
    border-radius: 50%;
    box-shadow: 0 2px 8px rgba(0,0,0,.15), 0 1px 2px rgba(0,0,0,.08);
    cursor: grab;
    z-index: 3;
    display: flex; align-items: center; justify-content: center;
    transition: box-shadow 0.2s, background 0.3s;
    touch-action: none;
}

.slider-captcha-btn:active {
    cursor: grabbing;
    box-shadow: 0 4px 14px rgba(0,0,0,.2), 0 1px 3px rgba(0,0,0,.1);
}

.slider-captcha-btn .btn-arrow {
    width: 14px; height: 14px;
    color: #b0b5bd;
    transition: color 0.3s;
}

.slider-captcha-btn .btn-arrow svg {
    width: 100%; height: 100%;
}

/* 拖动中状态 */
.slider-captcha-wrap.dragging .slider-captcha-btn {
    background: #07c160;
    box-shadow: 0 4px 16px rgba(7,193,96,.4);
}

.slider-captcha-wrap.dragging .slider-captcha-btn .btn-arrow {
    color: #fff;
}

.slider-captcha-wrap.dragging .track-text {
    color: #07c160;
}

/* 验证成功 */
.slider-captcha-wrap.success .slider-captcha-track {
    border-color: #07c160;
    background: #e8f8ef;
}

.slider-captcha-wrap.success .slider-captcha-btn {
    background: #07c160;
    cursor: default;
}

.slider-captcha-wrap.success .slider-captcha-btn .btn-arrow {
    color: #fff;
}

.slider-captcha-wrap.success .track-text {
    color: #07c160;
}

.slider-captcha-wrap.success .track-progress {
    background: linear-gradient(90deg, #d4f5e4, #b8edcf);
}

/* 验证失败 */
.slider-captcha-wrap.error .slider-captcha-track {
    border-color: #e74c3c;
    animation: sliderShake 0.5s ease;
}

.slider-captcha-wrap.error .slider-captcha-btn {
    background: #e74c3c;
}

.slider-captcha-wrap.error .slider-captcha-btn .btn-arrow {
    color: #fff;
}

.slider-captcha-wrap.error .track-text {
    color: #e74c3c;
}

@keyframes sliderShake {
    0%, 100% { transform: translateX(0); }
    10%, 50%, 90% { transform: translateX(-4px); }
    30%, 70% { transform: translateX(4px); }
}

/* 刷新提示 */
.slider-captcha-wrap .refresh-link {
    display: block;
    text-align: right;
    font-size: 12px;
    color: #1a73e8;
    margin-top: 6px;
    cursor: pointer;
    text-decoration: none;
}

.slider-captcha-wrap .refresh-link:hover {
    text-decoration: underline;
}

/* 移动端适配 */
@media (max-width: 480px) {
    .slider-captcha-wrap {
        max-width: 100%;
    }
    .slider-captcha-btn {
        width: 44px; height: 40px;
        top: 1px; left: 1px;
    }
}