.btn-load {
    background: #fff;
    border: 1.5px solid var(--border);
    color: var(--primary);
    padding: .6rem 2rem;
    border-radius: 30px;
    font-family: inherit;
    font-weight: 600;
    font-size: .88rem;
    cursor: pointer;
    width: 100%;
    max-width: 300px;
    min-height: 44px;
}

.skeleton-course {
    background: #fff;
    border-radius: 20px;
    overflow: hidden;
    margin-bottom: 24px;
    box-shadow: 0 4px 14px rgba(0, 0, 0, .05);
}

.skeleton-thumb {
    height: 150px;
    background: #e5e7eb;
    position: relative;
    overflow: hidden;
}

.skeleton-body {
    padding: 18px;
}

.skeleton-line {
    height: 14px;
    border-radius: 8px;
    background: #e5e7eb;
    margin-bottom: 14px;
    position: relative;
    overflow: hidden;
}

.skeleton-line.sm {
    width: 35%;
}

.skeleton-line.md {
    width: 60%;
}

.skeleton-line.lg {
    width: 100%;
}

.skeleton-avatar {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: #e5e7eb;
    margin-right: 10px;
    position: relative;
    overflow: hidden;
}

.skeleton-btn {
    width: 110px;
    height: 38px;
    border-radius: 12px;
    background: #e5e7eb;
    position: relative;
    overflow: hidden;
}

.skeleton-thumb::after,
.skeleton-line::after,
.skeleton-avatar::after,
.skeleton-btn::after {
    content: "";
    position: absolute;
    top: 0;
    left: -150px;
    width: 150px;
    height: 100%;
    background: linear-gradient(90deg,
            transparent,
            rgba(255, 255, 255, .7),
            transparent);
    animation: shimmer 1.2s infinite;
}

@keyframes shimmer {
    0% {
        left: -150px;
    }

    100% {
        left: 100%;
    }
}