.dca-materials {
    margin: 24px 0;
}

.dca-materials__summary {
    margin-bottom: 20px;
    padding: 16px 18px;
    border: 1px solid #e2e5e9;
    border-radius: 6px;
    background: #fff;
}

.dca-materials__summary p {
    margin: 0 0 8px;
}

.dca-materials__summary p:last-child {
    margin-bottom: 0;
}

.dca-materials__list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 18px;
}

.dca-materials__item {
    position: relative;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    min-height: 100%;
    border: 1px solid #dfe3e8;
    border-radius: 6px;
    background: #fff;
    box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04);
}

.dca-materials__item--open {
    border-color: #b8d9c2;
    background: #f5fbf7;
}

.dca-materials__media {
    position: relative;
    aspect-ratio: 16 / 9;
    background: #eef0f2;
}

.dca-materials__image {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.dca-materials__placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    color: #6b7280;
    background:
        linear-gradient(135deg, rgba(255, 255, 255, 0.45), rgba(255, 255, 255, 0)),
        #e5e7eb;
    font-size: 14px;
}

.dca-materials__badge {
    position: absolute;
    top: 10px;
    right: 10px;
    display: inline-flex;
    align-items: center;
    min-height: 28px;
    padding: 4px 10px;
    border-radius: 999px;
    color: #0f5132;
    background: #d7f3df;
    font-size: 13px;
    font-weight: 600;
}

.dca-materials__body {
    display: flex;
    flex: 1;
    flex-direction: column;
    padding: 16px;
}

.dca-materials__title {
    margin: 0 0 8px;
    font-size: 20px;
    line-height: 1.3;
}

.dca-materials__excerpt {
    margin: 0 0 16px;
    color: #4b5563;
}

.dca-materials__excerpt p {
    margin: 0 0 8px;
}

.dca-materials__excerpt p:last-child {
    margin-bottom: 0;
}

.dca-materials__action {
    margin-top: auto;
}

.dca-materials__form {
    margin: 0;
}

.dca-materials__button,
.dca-materials__open {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 40px;
    padding: 9px 16px;
    border: 1px solid #1f2937;
    border-radius: 5px;
    font: inherit;
    line-height: 1.2;
    text-decoration: none;
    cursor: pointer;
}

.dca-materials__button--primary,
.dca-materials__open {
    color: #fff;
    background: #1f2937;
}

.dca-materials__button--primary:hover,
.dca-materials__button--primary:focus,
.dca-materials__open:hover,
.dca-materials__open:focus {
    color: #fff;
    background: #111827;
}

.dca-materials__button--secondary {
    color: #1f2937;
    background: #fff;
}

.dca-materials__button--secondary:hover,
.dca-materials__button--secondary:focus {
    color: #111827;
    background: #f3f4f6;
}

.dca-materials__button--disabled,
.dca-materials__button:disabled {
    border-color: #d1d5db;
    color: #6b7280;
    background: #f3f4f6;
    cursor: not-allowed;
}

.dca-materials__confirm {
    margin-top: 12px;
    padding: 12px;
    border: 1px solid #d7dbe0;
    border-radius: 5px;
    background: #f8fafc;
}

.dca-materials__confirm p {
    margin: 0 0 10px;
}

.dca-materials__confirm-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.dca-materials__notice {
    margin: 0 0 16px;
    padding: 12px 14px;
    border: 1px solid #d7dbe0;
    border-radius: 5px;
    background: #f8fafc;
}

.dca-materials__notice--success {
    border-color: #b8d9c2;
    color: #0f5132;
    background: #f1fbf4;
}

.dca-materials__notice--warning {
    border-color: #efd69a;
    color: #6b4e00;
    background: #fff8e1;
}

.dca-materials__notice--error {
    border-color: #f0b8b8;
    color: #842029;
    background: #fff1f1;
}

.dca-materials__notice-link {
    font-weight: 700;
    text-decoration: underline;
    text-underline-offset: 2px;
}

@media (max-width: 560px) {
    .dca-materials__list {
        grid-template-columns: 1fr;
    }

    .dca-materials__button,
    .dca-materials__open {
        width: 100%;
    }

    .dca-materials__confirm-actions {
        flex-direction: column;
    }
}