/* ============================================
 * Hub Navigation
 * ============================================ */

:root {
    --hub-nav-bg: #2b2a2b;
    --hub-nav-text: #ffffff;
    --hub-nav-text-secondary: #b3b3b3;
    --hub-nav-link: #ffffff;
    --hub-nav-link-hover: #fa6d0c;
    --hub-card-bg: #3a393a;
    --hub-card-text: #ffffff;
    --hub-card-text-secondary: #b3b3b3;
    --hub-card-link: #ffffff;
    --hub-card-link-hover: #fa6d0c;
    --hub-card-hub-bg: #fa6d0c;
    --hub-card-parent-bg: #4a494a;
    --hub-card-radius: 8px;
    --hub-card-padding: 15px 20px;
    --hub-card-font-size: 16px;
    --hub-nav-gap: 15px;
    --hub-nav-padding: 60px 0;
    --hub-nav-title-size: 22px;
    --hub-nav-desc-size: 15px;
    --hub-grid-min: 240px;
}

/* Navigation Container */
.hub-navigation {
    color: var(--hub-nav-text);
}
.hub-nav-title {
    font-size: var(--hub-nav-title-size);
    color: var(--hub-nav-text);
    margin-bottom: 10px;
}
.hub-nav-description {
    color: var(--hub-nav-text-secondary);
    font-size: var(--hub-nav-desc-size);
    margin-bottom: 25px;
}

/* Grid */
.hub-nav-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(var(--hub-grid-min), 1fr));
    gap: var(--hub-nav-gap);
}
.hub-nav-list {
    display: flex;
    flex-direction: column;
    gap: var(--hub-nav-gap);
}

/* Cards */
.nav-item {
    background: var(--hub-card-bg);
    border: 1px solid var(--hub-card-bg);
    border-radius: var(--hub-card-radius);
    transition: all 0.2s;
}
.nav-item:hover {
    background: #4a494a;
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}
.nav-item a {
    display: block;
    padding: var(--hub-card-padding);
    text-decoration: none;
    color: var(--hub-card-link);
    font-size: var(--hub-card-font-size);
}
.nav-item a:hover {
    color: var(--hub-card-link-hover);
}

/* Hub Card */
.nav-item.nav-hub {
    background: var(--hub-card-hub-bg);
    border-color: var(--hub-card-hub-bg);
}
.nav-item.nav-hub a {
    color: #ffffff;
}
.nav-item.nav-hub:hover {
    background: #e05d00;
}

/* Parent Card */
.nav-item.nav-parent {
    background: var(--hub-card-parent-bg);
    border-color: var(--hub-card-parent-bg);
}
.nav-item.nav-parent a {
    color: #ffffff;
}
.nav-item.nav-parent:hover {
    background: #5a595a;
}

/* Breadcrumb inside Navigation */
.hub-navigation .hub-breadcrumb {
    padding: 0 0 20px;
    font-size: 14px;
    color: var(--hub-nav-text-secondary);
    background: transparent;
}
.hub-navigation .hub-breadcrumb a {
    color: var(--hub-nav-link);
    text-decoration: none;
}
.hub-navigation .hub-breadcrumb a:hover {
    color: var(--hub-nav-link-hover);
}
.hub-navigation .hub-breadcrumb .separator {
    margin: 0 8px;
    color: var(--hub-nav-text-secondary);
}
.hub-navigation .hub-breadcrumb span[aria-current] {
    color: var(--hub-nav-text);
    font-weight: 500;
}

/* Mobile */
@media (max-width: 768px) {
    .hub-navigation {
        padding: 40px 0;
    }
    .hub-nav-cards {
        grid-template-columns: 1fr;
    }
}