.hamburger-menu {
    width: 100%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border: 1px solid var(--borde-color);
    background: white;
    color: var(--texto-claro);
    border-radius: 12px;
    padding: 12px 16px;
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    transition: background 0.2s, color 0.2s;
}
.hamburger-menu:hover {
    background: var(--item-bg);
}
.tools-top-row {
    display: grid;
    gap: 10px;
}

/* Categorías - Estructura Clara */
.categoria-section, .subcategoria-section {
    border-bottom: 1px solid var(--borde-color);
    padding: 0;
}
.categoria-section:last-child, .subcategoria-section:last-child {
    border-bottom: none;
}
.categoria-label {
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--texto-claro);
    padding: 12px 20px 8px 20px;
    background: rgba(0,0,0,0.02);
}

.categoria-panel {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    top: auto;
    background: var(--fondo);
    transform: translateY(100%);
    transition: transform 0.3s ease;
    z-index: 90;
    max-height: 65vh;
    overflow-y: auto;
    border-top-left-radius: 20px;
    border-top-right-radius: 20px;
    border: 1px solid var(--borde-color);
    display: none;
}
.categoria-panel.open {
    display: block;
    transform: translateY(0);
}
.categoria-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px 20px;
    border-bottom: 1px solid var(--borde-color);
    font-weight: 700;
    color: var(--texto-oscuro);
}
.close-categories {
    background: transparent;
    border: none;
    color: var(--texto-claro);
    font-size: 18px;
    cursor: pointer;
}
.categoria-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.4);
    z-index: 85;
    display: none;
}
.categorias-scroll {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    padding: 12px 20px 15px 20px;
}
.cat-btn {
    flex: 1 1 calc(50% - 5px);
    min-width: calc(50% - 5px);
}
@media (min-width: 768px) {
    .tools-top-row {
        display: flex;
        align-items: flex-start;
        gap: 10px;
    }
    .hamburger-menu {
        width: auto;
        flex: 0 0 auto;
    }
    .tools-container {
        display: grid;
        gap: 15px;
    }
    .categoria-panel {
        position: fixed;
        top: 100px;
        bottom: 20px;
        left: 20px;
        width: 320px;
        max-height: calc(100vh - 120px);
        border-radius: 20px;
        transform: translateX(-110%);
        display: block;
    }
    .categoria-panel.open {
        transform: translateX(0);
    }
    .categoria-overlay {
        display: none !important;
    }
    .categorias-scroll {
        flex-wrap: wrap;
        gap: 12px;
        padding: 15px;
        max-height: none;
        overflow: hidden;
    }
    .cat-btn {
        flex: 1 1 100%;
        min-width: auto;
    }
}
@media (min-width: 1024px) {
    .productos-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}