/* 可访问性增强样式 */

/* 屏幕阅读器专用内容 */
.sr-only {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

/* 焦点样式 */
.container:focus,
.control-btn:focus,
.action-btn:focus,
.mood-btn:focus,
button:focus,
[tabindex]:focus {
    outline: 3px solid #ff6b9d;
    outline-offset: 2px;
    box-shadow: 0 0 0 2px rgba(255, 107, 157, 0.3);
}

/* 跳过链接 */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: #ff6b9d;
    color: white;
    padding: 8px;
    text-decoration: none;
    border-radius: 4px;
    z-index: 10000;
    transition: top 0.3s;
}

.skip-link:focus {
    top: 6px;
}

/* 高对比度模式支持 */
@media (prefers-contrast: high) {
    body {
        background: #000;
        color: #fff;
    }
    
    .slide {
        border: 2px solid #fff;
    }
    
    .control-btn,
    .action-btn {
        border: 2px solid #fff;
        background: #000;
        color: #fff;
    }
    
    .gallery-header {
        background: rgba(0, 0, 0, 0.9);
        color: #fff;
    }
    
    .loading-indicator {
        background: rgba(0, 0, 0, 0.95);
        color: #fff;
    }
    
    .error-toast {
        background: #fff;
        color: #000;
        border: 2px solid #000;
    }
}

/* 减少动画模式 */
@media (prefers-reduced-motion: reduce) {
    .slide {
        transition: none;
    }
    
    .loading-spinner {
        animation: none;
        border: 4px solid #ff6b9d;
        border-top: 4px solid transparent;
    }
    
    .container {
        transform: none !important;
    }
    
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .slide.initial,
    .slide.initial-top-left,
    .slide.initial-top-right,
    .slide.initial-bottom-left,
    .slide.initial-bottom-right,
    .slide.initial-deck {
        transform: none !important;
        opacity: 1 !important;
    }
}

/* 大字体支持 */
@media (min-resolution: 2dppx) {
    .control-btn,
    .action-btn {
        min-width: 48px;
        min-height: 48px;
    }
}

/* 键盘导航指示器 */
.keyboard-nav-active .container:focus {
    outline: 3px solid #ff6b9d;
    outline-offset: 4px;
}

.keyboard-nav-active .slide:focus {
    outline: 2px solid #ff6b9d;
    outline-offset: 2px;
    z-index: 100;
}

/* 触摸设备优化 */
@media (pointer: coarse) {
    .control-btn,
    .action-btn {
        min-width: 44px;
        min-height: 44px;
        padding: 12px;
    }
    
    .controls {
        gap: 15px;
    }
}

/* 语音控制提示 */
.voice-control-hint {
    position: fixed;
    bottom: 20px;
    left: 20px;
    background: rgba(255, 107, 157, 0.9);
    color: white;
    padding: 10px 15px;
    border-radius: 8px;
    font-size: 0.9rem;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.3s ease;
    pointer-events: none;
}

.voice-control-hint.show {
    opacity: 1;
    transform: translateY(0);
}

/* 屏幕阅读器友好的状态提示 */
.aria-live-region {
    position: absolute;
    left: -10000px;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

/* 色盲友好的颜色方案 */
.colorblind-friendly {
    --primary-color: #0066cc;
    --secondary-color: #ff9900;
    --success-color: #009900;
    --warning-color: #ff6600;
    --error-color: #cc0000;
}

.colorblind-friendly .mood-happy {
    filter: brightness(1.2) hue-rotate(45deg);
}

.colorblind-friendly .mood-love {
    filter: brightness(1.1) hue-rotate(15deg);
}

.colorblind-friendly .mood-excited {
    filter: brightness(1.3) contrast(1.1);
}

.colorblind-friendly .mood-peaceful {
    filter: brightness(0.9) saturate(0.8);
}