/* Header Styles */
/* ========================================================================== */

.portal-header {
    background: white;
    border-bottom: 1px solid #e0e0e0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
}

.logo-section {
    flex-shrink: 0;
}

.logo-link {
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-text {
    font-size: 20px;
    font-weight: 700;
    color: #0066cc;
    white-space: nowrap;
}

.main-navigation {
    flex: 1;
}

.nav-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    gap: 30px;
}

.nav-link {
    color: #1a1a1a;
    text-decoration: none;
    font-weight: 600;
    font-size: 15px;
    transition: color 0.3s ease;
    padding: 8px 0;
    border-bottom: 2px solid transparent;
}

.nav-link:hover {
    color: #0066cc;
    border-bottom-color: #0066cc;
}

.nav-footer-links {
    display: flex;
    gap: 20px;
    flex-shrink: 0;
}

.footer-nav-link {
    color: #666;
    text-decoration: none;
    font-size: 13px;
    transition: color 0.3s ease;
}

.footer-nav-link:hover {
    color: #0066cc;
}

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    gap: 6px;
    padding: 8px;
    z-index: 1001;
}

.menu-icon {
    width: 24px;
    height: 2px;
    background-color: #1a1a1a;
    transition: all 0.3s ease;
    display: block;
}

.mobile-menu-btn[aria-expanded="true"] .menu-icon:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

.mobile-menu-btn[aria-expanded="true"] .menu-icon:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn[aria-expanded="true"] .menu-icon:nth-child(3) {
    transform: rotate(-45deg) translate(4px, -4px);
}

/* Responsive Design */
@media (max-width: 768px) {
    .header-container {
        flex-direction: row;
        gap: 20px;
        padding: 15px;
        position: relative;
    }

    .mobile-menu-btn {
        display: flex;
        order: 3;
    }

    .main-navigation {
        position: fixed;
        top: 60px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
        border-bottom: 1px solid #e0e0e0;
        box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    }

    .main-navigation.active {
        max-height: 300px;
    }

    .nav-list {
        flex-direction: column;
        gap: 0;
        padding: 15px 20px;
    }

    .nav-link {
        padding: 12px 0;
        border-bottom: none;
        border-left: 3px solid transparent;
        padding-left: 10px;
    }

    .nav-link:hover {
        border-left-color: #0066cc;
        color: #0066cc;
    }

    .nav-footer-links {
        flex-wrap: wrap;
        gap: 15px;
    }

    .logo-text {
        font-size: 18px;
    }

    .nav-link {
        font-size: 14px;
    }
}

@media (max-width: 480px) {
    .header-container {
        flex-direction: column;
        gap: 15px;
        padding: 12px;
    }

    .nav-list {
        gap: 15px;
        flex-wrap: wrap;
    }

    .logo-text {
        font-size: 16px;
    }

    .nav-link {
        font-size: 13px;
        padding: 6px 0;
    }
}