/**
 * Navigation Component
 * Main navigation bar, subnav, and mobile menu
 */

.admin-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
    background: var(--surface);
    border-bottom: 2px solid var(--border-color);
    padding: 0 20px;
    margin: 0 -20px 25px -20px;
    position: relative;
}

.nav-left,
.nav-right {
    display: flex;
    align-items: center;
    gap: 10px;
}

.nav-item {
    display: inline-block;
    padding: 15px 20px;
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    border-bottom: 3px solid transparent;
    transition: all 0.2s;
    cursor: pointer;
    background: none;
    border-top: none;
    border-left: none;
    border-right: none;
    white-space: nowrap;
}

.nav-item:hover {
    color: var(--primary-color);
    background: var(--background);
    transform: none;
    box-shadow: none;
}

.nav-item.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

/* Navigation separator and icon variant */
.nav-separator {
    width: 1px;
    height: 30px;
    background: var(--border-color);
    margin: 0 10px;
}

.nav-icon {
    font-size: 1.2rem;
}

/* Mobile Hamburger Menu */
.hamburger,
.nav-hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
}

.hamburger span,
.nav-hamburger span {
    display: block;
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    transition: all 0.3s;
}

/* Admin Subnav (Secondary Navigation) */
.admin-subnav {
    background: var(--surface);
    border-bottom: 2px solid var(--border-color);
    padding: 0 20px;
    display: flex;
    gap: 0;
    overflow-x: auto;
    margin: -25px -20px 25px -20px;
    position: sticky;
    top: 0;
    z-index: 998;
}

.subnav-links {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.subnav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    padding: 6px 12px;
    border-radius: var(--radius-md);
    transition: all 0.2s;
}

.subnav-link:hover {
    background: var(--surface);
    color: var(--primary-color);
}

.subnav-link.active {
    background: var(--primary-color);
    color: white;
}

/* Subnav Sections (used by navigation.js) */
.subnav-section {
    display: flex;
    align-items: center;
    gap: 0;
    flex-shrink: 0;
}

/* Section separator with label */
.subnav-label {
    display: flex;
    align-items: center;
    padding: 0 15px;
    font-size: 10px;
    font-weight: 700;
    color: #94a3b8;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    white-space: nowrap;
    position: relative;
}

.subnav-label::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 1px;
    height: 20px;
    background: var(--border-color);
}

.subnav-section:first-child .subnav-label::before {
    display: none;
}

/* Subnav items styled like main nav items */
.subnav-item {
    display: inline-block;
    padding: 12px 18px;
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.875rem;
    border-bottom: 3px solid transparent;
    transition: all 0.2s;
    cursor: pointer;
    white-space: nowrap;
}

.subnav-item:hover {
    color: var(--primary-color);
    background: var(--background);
    transform: none;
    box-shadow: none;
}

.subnav-item.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

/* Mobile subnav */
@media (max-width: 900px) {
    .admin-subnav {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        padding: 0 10px;
        flex-wrap: nowrap;
    }

    .subnav-label {
        padding: 0 10px;
        font-size: 9px;
    }

    .subnav-item {
        padding: 10px 12px;
        font-size: 0.8125rem;
    }
}

/* ===========================
   Settings Page - Specific Layouts