/**
 * 滑块拼图验证码样式
 * 支持响应式设计和动画效果
 */

/* 主容器 */
.slide-captcha-container {
    width: 100%;
    max-width: 350px;
    margin: 0 auto;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    user-select: none;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

/* 画布容器 */
.captcha-canvas-container {
    position: relative;
    width: 100%;
    height: 200px;
    background: #f5f5f5;
    overflow: hidden;
}

/* 背景画布 */
.captcha-canvas {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    background: #f8f9fa;
}

/* 拼图块画布 */
.puzzle-canvas {
    position: absolute;
    top: 0;
    left: 0;
    z-index: 2;
    pointer-events: none;
    transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    /* 移动端优化 */
    transform-origin: top left;
    backface-visibility: hidden;
    will-change: transform, left, top;
    /* 确保精确像素对齐 */
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
    image-rendering: pixelated;
}

.puzzle-canvas.success {
    animation: puzzleSuccess 0.6s ease-out;
}

@keyframes puzzleSuccess {
    0% { transform: scale(1); }
    50% { transform: scale(1.1); }
    100% { transform: scale(1); }
}

/* 刷新按钮 */
.captcha-refresh {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 32px;
    height: 32px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 3;
    backdrop-filter: blur(4px);
}

.captcha-refresh:hover {
    background: rgba(255, 255, 255, 0.95);
    transform: scale(1.05);
}

.captcha-refresh svg {
    fill: #666;
    transition: all 0.3s ease;
}

.captcha-refresh:hover svg {
    fill: #333;
}

.captcha-refresh.refreshing {
    animation: refreshSpin 1s linear infinite;
}

@keyframes refreshSpin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* 加载状态 */
.captcha-loading {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.9);
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 10;
    backdrop-filter: blur(2px);
}

.loading-spinner {
    width: 24px;
    height: 24px;
    border: 2px solid #e0e0e0;
    border-top: 2px solid #1976d2;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 8px;
}

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

.captcha-loading span {
    font-size: 12px;
    color: #666;
}

/* 滑动轨道 */
.slide-track {
    position: relative;
    height: 40px;
    background: #f7f9fa;
    border-radius: 20px;
    margin: 15px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.slide-track:hover {
    background: #f0f2f5;
}

.slide-track.success {
    background: linear-gradient(90deg, #52c41a, #73d13d);
}

.slide-track.fail {
    background: linear-gradient(90deg, #ff4d4f, #ff7875);
    animation: trackShake 0.5s ease-in-out;
}

@keyframes trackShake {
    0%, 20%, 40%, 60%, 80% { transform: translateX(0); }
    10%, 30%, 50%, 70% { transform: translateX(-3px); }
    15%, 35%, 55%, 75% { transform: translateX(3px); }
}

/* 滑动轨道背景 */
.slide-track-bg {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: 31px;
    background: linear-gradient(90deg, #1976d2, #42a5f5);
    border-radius: 20px;
    transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.slide-track.success .slide-track-bg {
    background: linear-gradient(90deg, #389e0d, #52c41a);
}

.slide-track.fail .slide-track-bg {
    background: linear-gradient(90deg, #cf1322, #ff4d4f);
}

/* 滑动提示文字 */
.slide-track-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 14px;
    color: #8c8c8c;
    pointer-events: none;
    transition: opacity 0.3s ease;
    white-space: nowrap;
}

.slide-track.success .slide-track-text {
    color: #fff;
}

.slide-track.fail .slide-track-text {
    color: #fff;
}

/* 滑动按钮 */
.slide-button {
    position: absolute;
    top: 4px;
    left: 4px;
    width: 32px;
    height: 32px;
    background: #fff;
    border-radius: 50%;
    cursor: grab;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
    transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    z-index: 2;
}

.slide-button:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    transform: scale(1.05);
}

.slide-button:active,
.slide-button.dragging {
    cursor: grabbing;
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.25);
    transform: scale(1.1);
}

.slide-button svg {
    fill: #1976d2;
    transition: all 0.3s ease;
}

.slide-button.success {
    background: #52c41a;
    animation: buttonBounce 0.6s ease-out;
}

.slide-button.success svg {
    fill: #fff;
}

.slide-button.fail {
    background: #ff4d4f;
    animation: buttonShake 0.5s ease-in-out;
}

.slide-button.fail svg {
    fill: #fff;
}

@keyframes buttonBounce {
    0%, 20%, 40%, 60%, 80% { transform: translateY(0) scale(1.1); }
    10%, 30%, 50%, 70% { transform: translateY(-3px) scale(1.15); }
}

@keyframes buttonShake {
    0%, 20%, 40%, 60%, 80% { transform: translateX(0); }
    10%, 30%, 50%, 70% { transform: translateX(-2px); }
    15%, 35%, 55%, 75% { transform: translateX(2px); }
}

/* 状态显示 */
.captcha-status {
    padding: 8px 15px;
    margin: 0 15px 15px;
    border-radius: 4px;
    font-size: 12px;
    text-align: center;
    display: none;
    transition: all 0.3s ease;
}

.captcha-status.info {
    background: #e6f7ff;
    color: #1890ff;
    border: 1px solid #91d5ff;
}

.captcha-status.success {
    background: #f6ffed;
    color: #52c41a;
    border: 1px solid #b7eb8f;
}

.captcha-status.error {
    background: #fff2f0;
    color: #ff4d4f;
    border: 1px solid #ffccc7;
}

/* 响应式设计 */
@media (max-width: 480px) {
    .slide-captcha-container {
        max-width: 100%;
        margin: 0;
        border-radius: 0;
        /* 确保容器不会被意外缩放 */
        width: 100%;
        box-sizing: border-box;
    }
    
    .captcha-canvas-container {
        height: 180px;
        /* 移动端精确定位优化 */
        position: relative;
        overflow: hidden;
    }
    
    .captcha-canvas,
    .puzzle-canvas {
        /* 移动端画布渲染优化 */
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
        image-rendering: pixelated;
    }
    
    .puzzle-canvas {
        /* 移动端拼图块精确定位 */
        position: absolute;
        transform-origin: top left;
        backface-visibility: hidden;
        /* 确保在移动端的精确定位 */
        will-change: transform, left, top;
    }
    
    .slide-track {
        margin: 12px;
        height: 38px;
    }
    
    .slide-button {
        width: 30px;
        height: 30px;
        top: 4px;
    }
    
    .slide-track-bg {
        width: 30px;
    }
    
    .slide-track-text {
        font-size: 13px;
    }
    
    .captcha-refresh {
        width: 28px;
        height: 28px;
        top: 8px;
        right: 8px;
    }
    
    .captcha-refresh svg {
        width: 14px;
        height: 14px;
    }
}

/* 无障碍支持 */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* 高对比度模式 */
@media (prefers-contrast: high) {
    .slide-track {
        border: 2px solid #000;
    }
    
    .slide-button {
        border: 2px solid #000;
    }
    
    .captcha-refresh {
        border: 2px solid #000;
    }
}

/* 深色模式支持 */
@media (prefers-color-scheme: dark) {
    .slide-captcha-container {
        background: #1f1f1f;
        box-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
    }
    
    .captcha-canvas-container {
        background: #2d2d2d;
    }
    
    .captcha-canvas {
        background: #2d2d2d;
    }
    
    .slide-track {
        background: #2d2d2d;
    }
    
    .slide-track:hover {
        background: #333;
    }
    
    .slide-track-text {
        color: #ccc;
    }
    
    .captcha-refresh {
        background: rgba(45, 45, 45, 0.9);
    }
    
    .captcha-refresh svg {
        fill: #ccc;
    }
    
    .captcha-refresh:hover svg {
        fill: #fff;
    }
    
    .captcha-loading {
        background: rgba(31, 31, 31, 0.9);
    }
    
    .captcha-loading span {
        color: #ccc;
    }
    
    .loading-spinner {
        border-color: #444;
        border-top-color: #1976d2;
    }
}

/* 打印样式 */
@media print {
    .slide-captcha-container {
        display: none;
    }
}