/* 背景和装饰元素样式 */

/* 触觉背景 */
.tactile-bg {
    position: relative;
    overflow: hidden;
}

/* 触觉元素 - 模拟盲文点阵 */
.tactile-element {
    position: absolute;
    width: 150px;
    height: 150px;
    background-image: radial-gradient(circle, rgba(0, 123, 255, 0.1) 3px, transparent 4px);
    background-size: 20px 20px;
    background-repeat: repeat;
    z-index: 0;
    opacity: 0.7;
    border-radius: 50%;
}

/* 触觉元素位置变体 */
.tactile-element.top-left {
    top: -50px;
    left: -50px;
}

.tactile-element.top-right {
    top: -50px;
    right: -50px;
}

.tactile-element.bottom-left {
    bottom: -50px;
    left: -50px;
}

.tactile-element.bottom-right {
    bottom: -50px;
    right: -50px;
}

.tactile-element.center-left {
    top: 50%;
    left: -50px;
    transform: translateY(-50%);
}

.tactile-element.center-right {
    top: 50%;
    right: -50px;
    transform: translateY(-50%);
}

/* 盲文装饰 */
.braille-decoration {
    position: absolute;
    width: 200px;
    height: 200px;
    background-image: 
        radial-gradient(circle, rgba(0, 123, 255, 0.15) 3px, transparent 4px),
        radial-gradient(circle, rgba(0, 123, 255, 0.1) 3px, transparent 4px);
    background-position: 0 0, 10px 10px;
    background-size: 20px 20px;
    background-repeat: repeat;
    z-index: 0;
    opacity: 0.5;
}

/* 触觉线条 - 模拟触觉图形 */
.tactile-line {
    position: absolute;
    height: 2px;
    background: linear-gradient(90deg, transparent, rgba(0, 123, 255, 0.3), transparent);
    z-index: 0;
}

.tactile-line.horizontal {
    width: 100%;
    left: 0;
}

.tactile-line.vertical {
    width: 2px;
    height: 100%;
    background: linear-gradient(180deg, transparent, rgba(0, 123, 255, 0.3), transparent);
}

/* 波浪背景 */
.wave-bg {
    position: relative;
    overflow: hidden;
}

.wave-bg::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100px;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1200 120' preserveAspectRatio='none'%3E%3Cpath d='M0,0V46.29c47.79,22.2,103.59,32.17,158,28,70.36-5.37,136.33-33.31,206.8-37.5C438.64,32.43,512.34,53.67,583,72.05c69.27,18,138.3,24.88,209.4,13.08,36.15-6,69.85-17.84,104.45-29.34C989.49,25,1113-14.29,1200,52.47V0Z' opacity='.25' class='shape-fill'%3E%3C/path%3E%3Cpath d='M0,0V15.81C13,36.92,27.64,56.86,47.69,72.05,99.41,111.27,165,111,224.58,91.58c31.15-10.15,60.09-26.07,89.67-39.8,40.92-19,84.73-46,130.83-49.67,36.26-2.85,70.9,9.42,98.6,31.56,31.77,25.39,62.32,62,103.63,73,40.44,10.79,81.35-6.69,119.13-24.28s75.16-39,116.92-43.05c59.73-5.85,113.28,22.88,168.9,38.84,30.2,8.66,59,6.17,87.09-7.5,22.43-10.89,48-26.93,60.65-49.24V0Z' opacity='.5' class='shape-fill'%3E%3C/path%3E%3Cpath d='M0,0V5.63C149.93,59,314.09,71.32,475.83,42.57c43-7.64,84.23-20.12,127.61-26.46,59-8.63,112.48,12.24,165.56,35.4C827.93,77.22,886,95.24,951.2,90c86.53-7,172.46-45.71,248.8-84.81V0Z' class='shape-fill'%3E%3C/path%3E%3C/svg%3E");
    background-size: cover;
    background-repeat: no-repeat;
    z-index: 1;
}

/* 点状背景 */
.dotted-bg {
    background-image: radial-gradient(rgba(0, 123, 255, 0.1) 1px, transparent 1px);
    background-size: 20px 20px;
    background-position: 0 0;
}

/* 网格背景 */
.grid-bg {
    background-image: 
        linear-gradient(rgba(0, 123, 255, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 123, 255, 0.05) 1px, transparent 1px);
    background-size: 20px 20px;
}

/* 页面标题背景 */
.page-header {
    position: relative;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    padding: 60px 0;
    margin-bottom: 40px;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 20% 20%, rgba(0, 123, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(0, 123, 255, 0.1) 0%, transparent 50%);
    z-index: 0;
}

.page-header .container {
    position: relative;
    z-index: 1;
}