/* ========================================
   SYN-TECH English Website - Components
   Header, Navigation, Footer
   ======================================== */

/* ==================== HEADER ==================== */
.header {
    background-color: var(--white);
    border-bottom: 1px solid var(--border-gray);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0;
    max-width: 1400px;
    margin: 0 auto;
    padding-left: var(--spacing-md);
    padding-right: var(--spacing-md);
}

.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo-img {
    height: 50px;
    width: auto;
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-title {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--dark-navy);
    line-height: 1.2;
}

.logo-subtitle {
    font-size: 0.75rem;
    color: var(--medium-gray);
    font-weight: 500;
    letter-spacing: 0.5px;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.lang-switcher {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background-color: var(--light-gray);
    border-radius: 6px;
}

.lang-link {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--medium-gray);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.lang-link.active {
    color: var(--primary-blue);
}

.lang-link:hover {
    color: var(--primary-blue);
}

/* ==================== NAVIGATION ==================== */
.nav {
    background-color: var(--dark-navy);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

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

.nav-item {
    position: relative;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1.25rem 1.5rem;
    color: var(--white);
    font-weight: 500;
    font-size: 0.9375rem;
    text-decoration: none;
    transition: all var(--transition-fast);
}

.nav-link:hover {
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--white);
}

.nav-link.active {
    background-color: var(--primary-blue);
}

.nav-link i {
    font-size: 1rem;
}

/* Dropdown Menu */
.dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 240px;
    background-color: var(--white);
    border-radius: 0 0 8px 8px;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-normal);
    z-index: 100;
}

.nav-item:hover .dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-list {
    list-style: none;
    padding: 0.5rem 0;
    margin: 0;
}

.dropdown-item {
    border-bottom: 1px solid var(--border-gray);
}

.dropdown-item:last-child {
    border-bottom: none;
}

.dropdown-link {
    display: block;
    padding: 0.875rem 1.5rem;
    color: var(--dark-navy);
    font-size: 0.9375rem;
    transition: all var(--transition-fast);
}

.dropdown-link:hover {
    background-color: var(--light-gray);
    color: var(--primary-blue);
    padding-left: 2rem;
}

/* Mobile Menu Toggle */
.mobile-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--white);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
}

/* ==================== FOOTER ==================== */
.footer {
    background-color: var(--dark-navy);
    color: var(--white);
    padding: var(--spacing-xxl) 0 var(--spacing-md);
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-section h3 {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-md);
    color: var(--white);
}

.footer-section p {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color var(--transition-fast);
    font-size: 0.9375rem;
}

.footer-links a:hover {
    color: var(--white);
}

.footer-contact {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-contact-item {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9375rem;
}

.footer-contact-item i {
    color: var(--primary-blue);
    margin-top: 0.25rem;
}

.footer-social {
    display: flex;
    gap: 1rem;
    margin-top: var(--spacing-md);
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    color: var(--white);
    transition: all var(--transition-normal);
}

.social-link:hover {
    background-color: var(--primary-blue);
    transform: translateY(-3px);
}

.footer-divider {
    height: 1px;
    background-color: rgba(255, 255, 255, 0.1);
    margin: var(--spacing-lg) 0;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.6);
}

.footer-bottom-links {
    display: flex;
    gap: 1.5rem;
}

.footer-bottom-links a {
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-bottom-links a:hover {
    color: var(--white);
}

/* Certifications */
.certifications {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: var(--spacing-md);
}

.cert-badge {
    padding: 0.5rem 1rem;
    background-color: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 6px;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--white);
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 1024px) {
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    /* Header */
    .logo-text {
        display: none;
    }
    
    .header-actions {
        gap: 1rem;
    }
    
    /* Navigation */
    .mobile-toggle {
        display: block;
    }
    
    .nav-list {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--dark-navy);
        box-shadow: var(--shadow-lg);
    }
    
    .nav-list.active {
        display: flex;
    }
    
    .nav-item {
        width: 100%;
    }
    
    .dropdown {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        background-color: rgba(255, 255, 255, 0.05);
        display: none;
    }
    
    .nav-item:hover .dropdown {
        display: block;
    }
    
    /* Footer */
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .header-container {
        padding: 0.75rem var(--spacing-sm);
    }
    
    .logo-img {
        height: 40px;
    }
    
    .nav-link {
        padding: 1rem var(--spacing-md);
    }
    
    .footer {
        padding: var(--spacing-xl) 0 var(--spacing-md);
    }
}