/* 轮播图样式 */
.carousel {
    position: relative;
    margin: var(--spacing-xl) 0;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.carousel-inner {
    position: relative;
    width: 100%;
    overflow: hidden;
}

.carousel-item {
    position: relative;
    display: none;
    width: 100%;
    transition: transform var(--transition-slow);
}

.carousel-item.active {
    display: block;
}

.carousel-item img {
    width: 100%;
    height: auto;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.carousel-item:hover img {
    transform: scale(1.05);
}

.carousel-control-prev,
.carousel-control-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    background-color: rgba(0, 0, 0, 0.5);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    border: none;
    cursor: pointer;
}

.carousel-control-prev:hover,
.carousel-control-next:hover {
    background-color: rgba(0, 0, 0, 0.8);
    transform: translateY(-50%) scale(1.1);
}

.carousel-control-prev {
    left: var(--spacing-md);
}

.carousel-control-next {
    right: var(--spacing-md);
}

.carousel-indicators {
    position: absolute;
    bottom: var(--spacing-md);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: var(--spacing-xs);
}

.carousel-indicators button {
    width: 12px;
    height: 12px;
    border-radius: var(--radius-full);
    border: none;
    background-color: rgba(255, 255, 255, 0.5);
    transition: all var(--transition-fast);
    cursor: pointer;
}

.carousel-indicators button.active {
    background-color: var(--text-light);
    width: 30px;
}

/* 赛事开展部分样式 */
#section1 {
    background-color: var(--dark);
    color: var(--text-light);
    padding: var(--spacing-xxl) var(--spacing-md);
}

#section1 h2 {
    color: var(--text-light);
    margin-bottom: var(--spacing-lg);
    font-size: 2rem;
    font-weight: 700;
}

#section1 p.lead {
    color: var(--text-light);
    margin-bottom: var(--spacing-xl);
    font-size: 1.25rem;
    line-height: 1.7;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

/* 赛事卡片样式 */
#section1 .card {
    background-color: var(--wuda-blue);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    transition: all var(--transition-normal);
    border: 1px solid var(--wuda-blue-light);
}

#section1 .card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.2), 0 10px 10px -5px rgba(0, 0, 0, 0.15);
}

#section1 .card-title {
    color: #ffffff;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    font-size: 1.3rem;
}

#section1 .card-text {
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.7;
    font-size: 1rem;
    font-weight: 400;
}

#section1 .card-body {
    padding: var(--spacing-xl);
}

#section1 .card img {
    margin-bottom: var(--spacing-md);
    border: 3px solid rgba(255, 255, 255, 0.2);
    background-color: rgba(255, 255, 255, 0.1);
    padding: 5px;
}

#section1 .btn-primary {
    background-color: rgba(255, 255, 255, 0.2);
    color: #ffffff;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

#section1 .btn-primary:hover {
    background-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

#section1 .btn {
    margin-top: var(--spacing-md);
    display: block;
    margin-left: auto;
    margin-right: auto;
    width: fit-content;
}

/* 确保卡片中的图片清晰 */
#section1 .card img {
    border: 3px solid var(--light-dark);
    background-color: var(--light);
}

/* 确保按钮在卡片中清晰可见 */
#section1 .btn-primary {
    background-color: var(--wuda-blue-light);
    color: var(--text-light);
    font-weight: 500;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
}

#section1 .btn-primary:hover {
    background-color: var(--wuda-blue);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}