/* 拼图滑块验证码样式（登录页 / 联系我们页共用）
 * 注意：容器宽高、滑轨高度、拼图块尺寸由 JS 写死（WIDTH=280 等），
 *       此处只调视觉，勿改几何尺寸，否则拖动距离与校验坐标会错位。
 */
.slide-captcha {
    width: 280px;
    margin: 0 auto;
    user-select: none;
    -webkit-user-select: none;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

.slide-bg-wrap {
    position: relative;
    width: 280px;
    height: 155px;
    overflow: hidden;
    border-radius: 10px;
    box-shadow: 0 4px 18px rgba(15, 23, 42, 0.14), 0 0 0 1px rgba(15, 23, 42, 0.06);
}

.slide-bg {
    display: block;
    width: 280px;
    height: 155px;
    pointer-events: none;
}

/* 拼图块：更强立体悬浮感 */
.slide-piece {
    position: absolute;
    top: 0;
    left: 0;
    width: 42px;
    height: 42px;
    z-index: 2;
    pointer-events: none;
    filter: drop-shadow(0 5px 10px rgba(0, 0, 0, 0.4));
}

.slide-track {
    position: relative;
    width: 280px;
    height: 40px;
    background: linear-gradient(#f8fafc, #eef2f7);
    border: 1px solid #d8dee9;
    border-radius: 20px;
    margin-top: 14px;
    overflow: hidden;
    box-shadow: inset 0 2px 4px rgba(15, 23, 42, 0.06);
}

/* 进度条：拖动中=蓝（进行中），成功=绿，失败=红 */
.slide-bar {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: 0;
    background: linear-gradient(90deg, #4aa0ff, #6fc1ff);
    border-radius: 20px 0 0 20px;
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.18);
}

.slide-handle {
    position: absolute;
    top: -1px;
    left: 0;
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #ffffff, #f3f6fb);
    border: 1px solid #d0d7e3;
    border-radius: 50%;
    cursor: grab;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: #4a90e2;
    z-index: 3;
    box-shadow: 0 3px 8px rgba(15, 23, 42, 0.2);
    transition: background 0.2s, border-color 0.2s, color 0.2s, box-shadow 0.2s;
}

.slide-handle:hover {
    border-color: #b9c4d4;
    box-shadow: 0 4px 12px rgba(15, 23, 42, 0.25);
}

.slide-handle:active {
    cursor: grabbing;
    background: #f2f8ff;
    box-shadow: 0 6px 16px rgba(74, 144, 226, 0.35);
}

/* 提示文字：轻微呼吸，引导用户注意 */
.slide-tip {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    line-height: 40px;
    text-align: center;
    color: #98a3b3;
    font-size: 13px;
    letter-spacing: 1px;
    pointer-events: none;
    z-index: 1;
    animation: slide-tip-pulse 2.6s ease-in-out infinite;
}

@keyframes slide-tip-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* 成功态：绿色 + 光晕 + 回弹 */
.slide-captcha.success .slide-bar {
    background: linear-gradient(90deg, #5dbd3a, #82cf5d);
}

.slide-captcha.success .slide-handle {
    background: linear-gradient(135deg, #5dbd3a, #74ca4e);
    border-color: #52b531;
    color: #fff;
    box-shadow: 0 0 0 4px rgba(93, 189, 58, 0.22), 0 3px 8px rgba(15, 23, 42, 0.15);
    animation: slide-success-pop 0.35s ease;
}

.slide-captcha.success .slide-tip {
    color: #52b531;
    font-weight: 600;
    animation: none;
}

@keyframes slide-success-pop {
    0% { transform: scale(1); }
    50% { transform: scale(1.16); }
    100% { transform: scale(1); }
}

/* 失败态：红色 + 抖动 */
.slide-captcha.fail .slide-bar {
    background: linear-gradient(90deg, #f56c6c, #f79a9a);
}

.slide-captcha.fail .slide-handle {
    background: linear-gradient(135deg, #f56c6c, #f78585);
    border-color: #f04545;
    color: #fff;
    box-shadow: 0 0 0 4px rgba(245, 108, 108, 0.22), 0 3px 8px rgba(15, 23, 42, 0.15);
    animation: slide-shake 0.4s;
}

.slide-captcha.fail .slide-tip {
    color: #f04545;
    font-weight: 600;
    animation: none;
}

@keyframes slide-shake {
    0%, 100% { transform: translateX(0); }
    20% { transform: translateX(-5px); }
    40% { transform: translateX(5px); }
    60% { transform: translateX(-4px); }
    80% { transform: translateX(3px); }
}