:root {
    --bg: #f5f7fa;
}






body {
    font-family: Arial,sans-serif;
    background: var(--bg);
    color: #333;
}



header {
    background: #fff;
}






.logo {
    color: #003366;
}



.logo span {
    color: #0078d4;
}



.logo:hover,
.logo:focus-visible {
    color: #003366;
}



.header-welcome {
    color: #003366;
}









.main-nav {
    flex-shrink: 0;
}



.main-nav.nav-hidden {
    display: none;
}



.nav-link,
.dropdown-btn {
    color: #003366;
    font-family: inherit;
}



.nav-link:hover,
.nav-link:focus-visible,
.dropdown-btn:hover,
.dropdown-btn:focus-visible {
    background: #eef5fc;
    color: #0078d4;
}












.dropdown-content {
    background: #fff;
    border: 1px solid #e3eaf2;
}



.dropdown-content a {
    color: #333;
}



.dropdown-content a:hover,
.dropdown-content a:focus-visible,
.dropdown-content a.current-subject {
    background: #eef5fc;
    color: #0078d4;
    outline: none;
}



.dropdown-content a.current-subject {
    font-weight: bold;
}



.dropdown:hover .dropdown-content,
.dropdown:focus-within .dropdown-content,
.dropdown.mobile-open .dropdown-content {
    display: block;
}



.dropdown:hover .dropdown-arrow,
.dropdown:focus-within .dropdown-arrow,
.dropdown.mobile-open .dropdown-arrow {
    transform: rotate(180deg);
}



.mobile-toggle {
    margin-left: auto;
    background: transparent;
    border: 2px solid #003366;
    color: #003366;
    font-size: 25px;
}



.nav-logout {
    background: #0078d4;
    border: 2px solid #0078d4;
    color: #fff;
}



.nav-logout:hover,
.nav-logout:focus-visible {
    background: #005fa3;
    border-color: #005fa3;
}







.btn {
    border: none;
}



.btn-primary {
    background: #0078d4;
    color: white;
}



.btn-secondary {
    background: white;
    color: #003366;
    border: 2px solid #003366;
}



.hero {
    background: linear-gradient(
        135deg,
        #003366,
        #0078d4
    );
    color: white;
    text-align: center;
    padding: 70px 20px;
}



.hero-content {
    max-width: 900px;
    margin: auto;
}



.hero h1 {
    font-size: 44px;
    margin-bottom: 15px;
}



.hero-features {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
    margin: 30px 0;
}



.hero-feature {
    background: rgba(255,255,255,.18);
    padding: 8px 18px;
    border-radius: 30px;
}



.section {
    max-width: 1200px;
    margin: auto;
    padding: 80px 20px;
}



.section-title {
    text-align: center;
    color: #003366;
    margin-bottom: 50px;
    font-size: 40px;
}



.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit,minmax(250px,1fr));
    gap: 30px;
}



.card {
    height: 100%;
    background: white;
    padding: 30px;
    border-radius: 16px;
    box-shadow: 0 4px 10px rgba(0,0,0,.08);
    text-align: center;
}



.card-link {
    display: block;
    text-decoration: none;
    color: inherit;
}



.card-link .card {
    transition: all .2s ease;
    cursor: pointer;
}



.card-link .card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0,0,0,.15);
}

.card-link.locked-card {
    position: relative;
}

.card-link.locked-card .card {
    position: relative;
    overflow: hidden;
    border: 2px solid #f0b429;
    background: linear-gradient(
        180deg,
        #ffffff 0%,
        #fffaf0 100%
    );
}

.card-link.locked-card .card:hover {
    border-color: #d99a00;
    box-shadow: 0 8px 22px rgba(217, 154, 0, .2);
}

.premium-badge {
    position: absolute;
    top: 14px;
    right: 14px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 6px 10px;
    border-radius: 20px;
    background: #fff3cd;
    color: #7a5200;
    font-size: 12px;
    font-weight: 700;
    line-height: 1;
    letter-spacing: .2px;
}

.premium-message {
    display: inline-block;
    margin: 14px 0 0;
    padding: 8px 14px;
    border-radius: 20px;
    background: #003366;
    color: #fff;
    font-size: 14px;
    font-weight: 700;
}

.card-link.locked-card:focus-visible {
    border-radius: 16px;
    outline: 3px solid #0078d4;
    outline-offset: 4px;
}


.icon {
    font-size: 56px;
    margin-bottom: 15px;
}



.card h3 {
    color: #003366;
    margin-bottom: 15px;
}



.cta {
    padding: 60px 20px;
    background: linear-gradient(
        135deg,
        #003366,
        #005fa3
    );
    color: white;
    text-align: center;
}



.cta h2 {
    margin-bottom: 12px;
}



.cta p {
    max-width: 750px;
    margin: auto;
}



#footerCta {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
    margin-top: 25px;
}



footer {
    padding: 30px;
    background: #001f3f;
    color: white;
}













@media (max-width: 900px) {
.mobile-toggle.is-visible {
    display: inline-flex;
    order: 2;
}


    


    
.main-nav {
    order: 4;
    background: #fff;
    border-top: 1px solid #e3eaf2;
}


    
.main-nav.active {
    display: flex;
}


    
.main-nav.nav-hidden {
    display: none;
}


    


    


    


    
.dropdown-content {
    border: 0;
}


    
.dropdown.mobile-open .dropdown-content {
    display: block;
}
}



@media (max-width: 600px) {
.hero {
    padding: 50px 15px;
}


    
.hero h1 {
    font-size: 32px;
}


    
.section {
    padding: 60px 15px;
}


    
.section-title {
    margin-bottom: 35px;
    font-size: 32px;
}


    
.cards {
    grid-template-columns: 1fr;
    gap: 20px;
}


    
.cta {
    padding: 50px 16px;
}



.cta h2 {
    font-size: 28px;
    line-height: 1.25;
}



.cta p {
    font-size: 16px;
    line-height: 1.6;
}



#footerCta {
    width: 100%;
    max-width: 360px;
    margin: 24px auto 0;
    flex-direction: column;
}



#footerCta .btn {
    width: 100%;
    min-width: 180px;
}






.cta .btn-primary {
    background: #0078d4;
    border: 2px solid #0078d4;
    color: #fff;
}



.cta .btn-primary:hover,
.cta .btn-primary:focus-visible {
    background: #0067b8;
    border-color: #0067b8;
    outline: none;
}



.cta .btn-secondary {
    background: #fff;
    border: 2px solid #fff;
    color: #003366;
}

.cta .btn-secondary:hover,
.cta .btn-secondary:focus-visible {
    background: #eef5fc;
    border-color: #eef5fc;
    color: #003366;
    outline: none;

}
.premium-badge {
    top: 12px;
    right: 12px;
    padding: 6px 9px;
    font-size: 11px;
}

.premium-message {
    font-size: 13px;
}
}