/* === BANNER AUTOR Y GARANTIA === */
    .author-seal-banner {
        background: linear-gradient(135deg, #0d2545 0%, #153b6c 100%);
        border-radius: 16px;
        padding: 1.6rem 2rem;
        margin: 1.8rem 0 2.2rem 0;
        color: #ffffff;
        display: flex;
        align-items: center;
        gap: 1.5rem;
        box-shadow: 0 10px 25px rgba(13, 37, 69, 0.15);
        border-left: 6px solid #f7a81b;
    }
    .author-seal-icon {
        flex-shrink: 0;
        width: 64px;
        height: 64px;
        background: rgba(247, 168, 27, 0.18);
        border: 2px solid #f7a81b;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 2rem;
        color: #f7a81b;
    }
    .author-seal-content h4 {
        margin: 0 0 0.4rem 0;
        font-size: 1.25rem;
        font-weight: 700;
        color: #ffffff;
        display: flex;
        align-items: center;
        gap: 0.6rem;
        flex-wrap: wrap;
    }
    .author-seal-content h4 .badge-sec {
        background: #f7a81b;
        color: #0d2545;
        font-size: 0.75rem;
        font-weight: 800;
        padding: 3px 10px;
        border-radius: 20px;
        text-transform: uppercase;
        letter-spacing: 0.5px;
    }
    .author-seal-content p {
        margin: 0;
        font-size: 0.92rem;
        line-height: 1.55;
        color: #e2ecf9;
    }

    /* === PANEL DE CONTROLES, FILTROS Y BUSQUEDA === */
    .catalog-controls {
        background: #f8fafc;
        border: 1px solid #e2e8f0;
        border-radius: 16px;
        padding: 1.5rem;
        margin-bottom: 2rem;
        box-shadow: 0 4px 12px rgba(0,0,0,0.03);
    }
    .filter-tabs {
        display: flex;
        gap: 0.8rem;
        flex-wrap: wrap;
        margin-bottom: 1.2rem;
        border-bottom: 1px solid #e2e8f0;
        padding-bottom: 1rem;
    }
    .tab-btn {
        background: #ffffff;
        border: 1px solid #cbd5e1;
        color: #334155;
        padding: 0.6rem 1.2rem;
        border-radius: 30px;
        font-size: 0.92rem;
        font-weight: 600;
        cursor: pointer;
        transition: all 0.25s ease;
        display: inline-flex;
        align-items: center;
        gap: 0.5rem;
    }
    .tab-btn:hover {
        background: #f1f5f9;
        border-color: #94a3b8;
        transform: translateY(-1px);
    }
    .tab-btn.active {
        background: #0b2b4f;
        color: #ffffff;
        border-color: #0b2b4f;
        box-shadow: 0 4px 10px rgba(11, 43, 79, 0.25);
    }
    .tab-btn .badge-count {
        background: rgba(0,0,0,0.08);
        padding: 2px 7px;
        border-radius: 12px;
        font-size: 0.78rem;
    }
    .tab-btn.active .badge-count {
        background: rgba(255,255,255,0.25);
        color: #ffffff;
    }

    .filter-bar-row {
        display: grid;
        grid-template-columns: 2fr 1fr 1fr;
        gap: 1rem;
        align-items: center;
    }
    .search-input-wrap {
        position: relative;
        display: flex;
        align-items: center;
    }
    .search-input-wrap i.search-icon {
        position: absolute;
        left: 14px;
        color: #64748b;
        font-size: 1rem;
        pointer-events: none;
    }
    .search-input-wrap input {
        width: 100%;
        padding: 0.65rem 2.4rem 0.65rem 2.6rem;
        border: 1px solid #cbd5e1;
        border-radius: 10px;
        font-size: 0.92rem;
        background: #ffffff;
        transition: border-color 0.2s, box-shadow 0.2s;
    }
    .search-input-wrap input:focus {
        border-color: #1a6fb5;
        outline: none;
        box-shadow: 0 0 0 3px rgba(26, 111, 181, 0.15);
    }
    .btn-clear-search {
        position: absolute;
        right: 12px;
        background: none;
        border: none;
        color: #94a3b8;
        cursor: pointer;
        font-size: 0.9rem;
        padding: 4px;
    }
    .btn-clear-search:hover {
        color: #475569;
    }
    .select-control-wrap {
        display: flex;
        flex-direction: column;
        gap: 0.3rem;
    }
    .select-control-wrap label {
        font-size: 0.78rem;
        font-weight: 700;
        text-transform: uppercase;
        color: #475569;
        margin: 0;
        letter-spacing: 0.4px;
    }
    .select-control-wrap select {
        width: 100%;
        padding: 0.65rem 1rem;
        border: 1px solid #cbd5e1;
        border-radius: 10px;
        font-size: 0.9rem;
        background: #ffffff;
        color: #1e293b;
        cursor: pointer;
        transition: border-color 0.2s;
    }
    .select-control-wrap select:focus {
        border-color: #1a6fb5;
        outline: none;
    }
    .results-status-bar {
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin-top: 1rem;
        padding-top: 0.8rem;
        border-top: 1px dashed #e2e8f0;
        font-size: 0.88rem;
        color: #64748b;
    }
    .btn-reset-filters {
        background: none;
        border: none;
        color: #1a6fb5;
        font-size: 0.85rem;
        font-weight: 600;
        cursor: pointer;
        padding: 0;
        display: inline-flex;
        align-items: center;
        gap: 0.4rem;
    }
    .btn-reset-filters:hover {
        text-decoration: underline;
        color: #0b2b4f;
    }

    /* === GRID DE TARJETAS DE PLANOS === */
    .cad-grid {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
        gap: 1.8rem;
        margin-top: 1.5rem;
    }
    .cad-card {
        background: #ffffff;
        border: 1px solid #e2e8f0;
        border-radius: 18px;
        overflow: hidden;
        display: flex;
        flex-direction: column;
        transition: transform 0.28s ease, box-shadow 0.28s ease, border-color 0.28s ease;
        box-shadow: 0 4px 15px rgba(0,0,0,0.04);
        position: relative;
    }
    .cad-card:hover {
        transform: translateY(-5px);
        box-shadow: 0 14px 30px rgba(0,0,0,0.1);
        border-color: #b9d2ec;
    }
    .cad-card.featured-card {
        border: 2px solid #f6cf7d;
    }
    .cad-card-thumb {
        position: relative;
        width: 100%;
        height: 220px;
        background: #0d1e33;
        overflow: hidden;
    }
    .cad-card-thumb img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.4s ease;
    }
    .cad-card:hover .cad-card-thumb img {
        transform: scale(1.05);
    }
    .thumb-badge-top {
        position: absolute;
        top: 12px;
        left: 12px;
        display: flex;
        flex-direction: column;
        gap: 6px;
        z-index: 2;
    }
    .badge-status {
        padding: 5px 12px;
        border-radius: 20px;
        font-size: 0.76rem;
        font-weight: 700;
        letter-spacing: 0.4px;
        text-transform: uppercase;
        display: inline-flex;
        align-items: center;
        gap: 5px;
        box-shadow: 0 4px 8px rgba(0,0,0,0.25);
    }
    .badge-status.badge-paid {
        background: linear-gradient(135deg, #f59e0b, #d97706);
        color: #ffffff;
    }
    .badge-status.badge-free {
        background: linear-gradient(135deg, #10b981, #059669);
        color: #ffffff;
    }
    .badge-dwg {
        background: rgba(13, 30, 51, 0.85);
        color: #93c5fd;
        border: 1px solid rgba(147, 197, 253, 0.3);
        padding: 3px 10px;
        border-radius: 12px;
        font-size: 0.72rem;
        font-weight: 700;
        backdrop-filter: blur(4px);
        width: fit-content;
    }
    .thumb-preview-btn {
        position: absolute;
        bottom: 12px;
        right: 12px;
        background: rgba(13, 37, 69, 0.85);
        color: #ffffff;
        padding: 6px 14px;
        border-radius: 20px;
        font-size: 0.8rem;
        font-weight: 600;
        display: inline-flex;
        align-items: center;
        gap: 6px;
        backdrop-filter: blur(4px);
        transition: background 0.2s, transform 0.2s;
        z-index: 2;
        text-decoration: none;
    }
    .thumb-preview-btn:hover {
        background: #1a6fb5;
        color: #ffffff;
        transform: scale(1.04);
    }

    .cad-card-body {
        padding: 1.4rem;
        display: flex;
        flex-direction: column;
        flex-grow: 1;
    }
    .cad-category {
        font-size: 0.75rem;
        font-weight: 700;
        text-transform: uppercase;
        letter-spacing: 0.6px;
        color: #1a6fb5;
        margin-bottom: 0.35rem;
    }
    .cad-title {
        font-size: 1.18rem;
        font-weight: 700;
        color: #0b2b4f;
        line-height: 1.35;
        margin: 0 0 0.6rem 0;
        min-height: 2.7rem;
    }
    .cad-author-pill {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        font-size: 0.82rem;
        padding: 4px 10px;
        border-radius: 8px;
        margin-bottom: 0.8rem;
        width: fit-content;
    }
    .cad-author-pill.author-verified {
        background: #eff6ff;
        color: #1e40af;
        border: 1px solid #bfdbfe;
        font-weight: 600;
    }
    .cad-author-pill.author-reference {
        background: #f1f5f9;
        color: #475569;
        border: 1px solid #e2e8f0;
    }
    .cad-desc {
        font-size: 0.9rem;
        color: #475569;
        line-height: 1.5;
        margin-bottom: 1rem;
        flex-grow: 1;
    }
    .cad-specs-list {
        list-style: none;
        padding: 0;
        margin: 0 0 1.2rem 0;
        border-top: 1px solid #f1f5f9;
        padding-top: 0.8rem;
    }
    .cad-specs-list li {
        font-size: 0.83rem;
        color: #334155;
        margin-bottom: 0.35rem;
        display: flex;
        align-items: baseline;
        gap: 6px;
    }
    .cad-specs-list li i {
        font-size: 0.75rem;
        color: #10b981;
    }

    .cad-card-footer {
        padding-top: 1rem;
        border-top: 1px solid #e2e8f0;
        display: flex;
        justify-content: space-between;
        align-items: center;
        gap: 0.8rem;
    }
    .price-box {
        display: flex;
        flex-direction: column;
    }
    .price-tag-paid {
        font-size: 1.35rem;
        font-weight: 800;
        color: #0b2b4f;
        line-height: 1;
    }
    .price-tag-paid small {
        font-size: 0.8rem;
        font-weight: 600;
        color: #64748b;
    }
    .usd-tag {
        font-size: 0.82rem;
        font-weight: 700;
        color: #1a6fb5;
        margin-left: 4px;
        background: #eef6ff;
        padding: 2px 7px;
        border-radius: 6px;
        border: 1px solid #c8ddf6;
        vertical-align: middle;
    }
    .price-tag-free {
        font-size: 1.3rem;
        font-weight: 800;
        color: #059669;
        line-height: 1;
    }
    .price-sub {
        font-size: 0.74rem;
        color: #64748b;
        margin-top: 2px;
    }
    .btn-card-action {
        padding: 0.65rem 1.1rem;
        border-radius: 10px;
        font-size: 0.88rem;
        font-weight: 700;
        cursor: pointer;
        display: inline-flex;
        align-items: center;
        gap: 0.5rem;
        text-decoration: none;
        transition: all 0.25s ease;
        border: none;
        white-space: nowrap;
    }
    .btn-card-action.btn-buy {
        background: #f7a81b;
        color: #0d2545;
        box-shadow: 0 4px 10px rgba(247, 168, 27, 0.3);
    }
    .btn-card-action.btn-buy:hover {
        background: #f59e0b;
        color: #000000;
        transform: translateY(-2px);
        box-shadow: 0 6px 14px rgba(247, 168, 27, 0.45);
    }
    .btn-card-action.btn-download-free {
        background: #10b981;
        color: #ffffff;
        box-shadow: 0 4px 10px rgba(16, 185, 129, 0.25);
    }
    .btn-card-action.btn-download-free:hover {
        background: #059669;
        color: #ffffff;
        transform: translateY(-2px);
        box-shadow: 0 6px 14px rgba(16, 185, 129, 0.4);
    }

    /* === ESTADO VACIO / NO RESULTS === */
    .cad-empty-state {
        display: none;
        text-align: center;
        padding: 3.5rem 1.5rem;
        background: #f8fafc;
        border: 2px dashed #cbd5e1;
        border-radius: 18px;
        margin: 2rem 0;
    }
    .cad-empty-icon {
        font-size: 3rem;
        color: #94a3b8;
        margin-bottom: 1rem;
    }
    .cad-empty-state h4 {
        color: #1e293b;
        font-size: 1.3rem;
        margin-bottom: 0.5rem;
    }
    .cad-empty-state p {
        color: #64748b;
        max-width: 480px;
        margin: 0 auto 1.2rem auto;
    }

    /* === MODAL DE COMPRA / ADQUISICION === */
    .modal-cad-overlay {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(11, 27, 49, 0.7);
        backdrop-filter: blur(5px);
        z-index: 99999;
        justify-content: center;
        align-items: center;
        padding: 1.5rem;
        overflow-y: auto;
    }
    .modal-cad-box {
        background: #ffffff;
        border-radius: 22px;
        max-width: 650px;
        width: 100%;
        max-height: 90vh;
        display: flex;
        flex-direction: column;
        box-shadow: 0 20px 45px rgba(0,0,0,0.3);
        overflow: hidden;
        position: relative;
        animation: modalCadIn 0.28s ease-out;
    }
    @keyframes modalCadIn {
        from { opacity: 0; transform: translateY(20px) scale(0.97); }
        to { opacity: 1; transform: translateY(0) scale(1); }
    }
    .modal-cad-header {
        background: #0b2b4f;
        color: #ffffff;
        padding: 1.2rem 1.8rem;
        display: flex;
        justify-content: space-between;
        align-items: center;
        flex-shrink: 0;
    }
    .modal-cad-header h3 {
        margin: 0;
        color: #ffffff;
        font-size: 1.25rem;
        font-weight: 700;
        display: flex;
        align-items: center;
        gap: 0.6rem;
    }
    .modal-cad-close {
        background: rgba(255,255,255,0.15);
        border: none;
        color: #ffffff;
        width: 36px;
        height: 36px;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.4rem;
        cursor: pointer;
        padding: 0;
        line-height: 1;
        opacity: 0.9;
        transition: background 0.2s, opacity 0.2s;
    }
    .modal-cad-close:hover {
        background: rgba(255,255,255,0.3);
        opacity: 1;
    }
    .modal-cad-body {
        padding: 1.8rem;
        overflow-y: auto;
    }
    .modal-product-summary {
        display: flex;
        gap: 1.2rem;
        background: #f8fafc;
        border: 1px solid #e2e8f0;
        border-radius: 14px;
        padding: 1rem;
        margin-bottom: 1.4rem;
        align-items: center;
    }
    .modal-product-thumb {
        width: 90px;
        height: 70px;
        object-fit: cover;
        border-radius: 8px;
        border: 1px solid #cbd5e1;
    }
    .modal-product-info h4 {
        margin: 0 0 0.2rem 0;
        font-size: 1.05rem;
        color: #0b2b4f;
        font-weight: 700;
    }
    .modal-product-price {
        font-size: 1.2rem;
        font-weight: 800;
        color: #d97706;
    }
    .modal-author-note {
        background: #fef8eb;
        border-left: 4px solid #f7a81b;
        padding: 0.9rem 1.2rem;
        border-radius: 8px;
        font-size: 0.88rem;
        color: #78350f;
        margin-bottom: 1.4rem;
    }
    .modal-steps-title {
        font-size: 0.92rem;
        font-weight: 700;
        text-transform: uppercase;
        letter-spacing: 0.5px;
        color: #334155;
        margin-bottom: 0.8rem;
    }
    .modal-actions-list {
        display: flex;
        flex-direction: column;
        gap: 0.8rem;
    }
    .modal-action-btn {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 0.9rem 1.2rem;
        border-radius: 12px;
        text-decoration: none;
        font-weight: 700;
        font-size: 0.95rem;
        transition: all 0.2s ease;
    }
    .modal-action-btn.btn-paypal {
        background: linear-gradient(135deg, #003087 0%, #0070ba 100%);
        color: #ffffff;
    }
    .modal-action-btn.btn-paypal:hover {
        background: linear-gradient(135deg, #002266 0%, #005ea6 100%);
        color: #ffffff;
        transform: translateY(-2px);
        box-shadow: 0 6px 15px rgba(0, 112, 186, 0.4);
    }
    .modal-action-btn.btn-wa {
        background: #25d366;
        color: #ffffff;
    }
    .modal-action-btn.btn-wa:hover {
        background: #1eb856;
        color: #ffffff;
        transform: translateY(-2px);
        box-shadow: 0 6px 15px rgba(37, 211, 102, 0.35);
    }
    .modal-action-btn.btn-webpay {
        background: #0b2b4f;
        color: #ffffff;
    }
    .modal-action-btn.btn-webpay:hover {
        background: #153e70;
        color: #ffffff;
        transform: translateY(-2px);
        box-shadow: 0 6px 15px rgba(11, 43, 79, 0.3);
    }
    .modal-action-btn.btn-contacto {
        background: #f1f5f9;
        color: #334155;
        border: 1px solid #cbd5e1;
    }
    .modal-action-btn.btn-contacto:hover {
        background: #e2e8f0;
        color: #0b2b4f;
    }
    .modal-qr-box {
        background: #ffffff;
        border: 2px dashed #f7a81b;
        border-radius: 14px;
        padding: 1rem;
        text-align: center;
        margin-top: 0.5rem;
    }
    .modal-qr-box img {
        max-width: 170px;
        height: auto;
        border-radius: 8px;
        display: block;
        margin: 0 auto 0.5rem auto;
        border: 1px solid #e2e8f0;
        background: #ffffff;
        padding: 4px;
    }

    @media (max-width: 900px) {
        .filter-bar-row {
            grid-template-columns: 1fr;
        }
    }
    @media (max-width: 700px) {
        .documento { padding: 1.5rem 1rem; }
        h1 { font-size: 1.8rem; }
        .author-seal-banner {
            flex-direction: column;
            text-align: center;
            gap: 1rem;
        }
        .author-seal-content h4 {
            justify-content: center;
        }
        .cad-grid {
            grid-template-columns: 1fr;
        }
    }

    @media (max-width: 600px) {
        .modal-cad-overlay {
            padding: 0.6rem;
        }
        .modal-cad-box {
            border-radius: 16px;
            max-height: 94vh;
        }
        .modal-cad-header {
            padding: 0.9rem 1.1rem;
        }
        .modal-cad-header h3 {
            font-size: 1.1rem;
        }
        .modal-cad-body {
            padding: 1.1rem 0.9rem;
        }
        .modal-product-summary {
            padding: 0.8rem;
            gap: 0.8rem;
        }
        .modal-product-thumb {
            width: 75px;
            height: 60px;
        }
        .modal-product-info h4 {
            font-size: 0.95rem;
        }
        .modal-product-price {
            font-size: 1.05rem;
        }
        .paypal-single-button-wrapper {
            padding: 0.9rem 0.6rem !important;
        }
        .modal-qr-box {
            padding: 0.8rem 0.6rem;
        }
        .modal-qr-box img {
            max-width: 155px;
        }
    }