.img-placeholder {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 38%, #e0f2fe 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #475569;
    font-weight: 500;
    font-size: 0.875rem;
    border-radius: 0.9rem;
    margin-bottom: 1.5rem;
    border: 1px solid #cbd5e1;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.65), 0 18px 26px rgba(37, 99, 235, 0.12);
    position: relative;
    overflow: hidden;
}

.img-placeholder::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: linear-gradient(115deg, transparent 25%, rgba(255, 255, 255, 0.4) 50%, transparent 75%);
    transform: translateX(-130%);
    animation: shimmer 4.5s ease-in-out infinite;
}

.img-placeholder::after {
    content: '';
    position: absolute;
    inset: auto -20% -45% auto;
    width: 180px;
    height: 180px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(20, 184, 166, 0.28) 0%, rgba(20, 184, 166, 0) 70%);
}

.img-placeholder-lg {
    height: 350px;
}

.img-placeholder-sm {
    height: 120px;
}

@keyframes shimmer {
    0%, 100% { transform: translateX(-130%); }
    50% { transform: translateX(130%); }
}