section {
    padding: 20px 0;
}

@media (min-width: 786px) {
    section {
        padding: 80px 0;
    }
}

.top-nav {
    display: none;
    position: absolute;
    top: 0;
    left: 0;
}

.top-nav .main-links {
    display: none;
}

@media (min-width: 786px) {

    .top-nav {
        display: flex;
        align-items: center;
        justify-content: center;

        z-index: 1000;
        backdrop-filter: blur(8px);
        -webkit-backdrop-filter: blur(8px);

        width: 100vw;
        padding: 32px 0;
        
        background-color: hsla(0, 0%, 0, 0.5);
        border-bottom: 1px solid var(--border);
    }

    .top-nav-grid {

        box-sizing: border-box;
        display: inline-grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 40px;

    }

    .top-nav-grid .main-links {
        margin: 0 10px;

        display: block;
        text-align: center;

        font-weight: normal;
        color: var(--text-muted);
        text-decoration: none;
    }

    .toggle-sidebar-btn {
        display: none;
    }

    aside {
        display: none;
    }
}

.main-title {
    margin: 1rem;
    margin-right: 0;
    text-align: left;
    
}

.hero-content {
    /* Set a specific height for the hero section */
    display: flex;
    flex-direction: column;
    gap: 20px;
    
    background-image: none;
    

}

.hero-content .hero-img {
    margin-left: 2vw;
    border-radius: 8px;
}

.descriptor {
    margin: 0.5rem;
    text-align: left;
    color: var(--text-muted);
    font-weight: normal;
    font-size: clamp(0.5rem, 2vw + 0.5rem, 1.5rem);
    background-color: transparent;
}

.hero-buttons {
    display: flex;
    flex-direction: row;
    gap: 1rem;
}

.hero-buttons a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    line-height: 1;

    text-decoration: none;
    padding: 0.5rem 2rem;
    font-weight: bold;
    font-size: clamp(0.5rem, 2vw + 0.5rem, 1.5rem);
    
    border-radius: 100vw; /* inf round */
    transition: var(--transition);
}

.get-started {
    background-color: var(--success-bg);
    color: var(--success-text);
    border: none;
}

.get-started:hover {
    background-color: var(--success-border);
}

.signin {
    border: 1px solid var(--theme);
    color: var(--text);
}

.signin:hover {
    background-color: var(--theme);
}

.hero-img {
    display: none;
    justify-content: center;
    margin: auto 32px;
    padding: 16px;
    background-color: #ffffff;
    border-radius: var(--radius);
    box-shadow: var(--border) 0px 0px 50px;
}

@media (min-width: 768px) {

    .hero {
        display: flex;
        align-items: center;
        height: 95vh;
        margin: auto;
    }

    .hero-content {
        flex-direction: row;
        justify-content: center;
        align-items: center;

        width: 100%;

        background-image:
            linear-gradient(to right, var(--border) 1px, transparent 1px), /* Vertical lines */
            linear-gradient(to bottom, var(--border) 1px, transparent 1px); /* Horizontal lines */
        background-size: 40px 50px; 
        
        z-index: 1;
        
        mask-image: linear-gradient(
            to bottom, 
            transparent 0%,    /* Start fully transparent at the very top */
            black 15%,         /* Become fully opaque at 15% down */
            black 85%,         /* Stay opaque until 85% down */
            transparent 100%   /* Become fully transparent at the very bottom */
        );
        /* Include webkit prefix for better compatibility */
        -webkit-mask-image: linear-gradient(
            to bottom, 
            transparent 0%,
            black 15%,
            black 85%,
            transparent 100%
        );        

        height: 65vh; 
        max-height: 600px;
    }

    .get-started {
        padding: 1rem 4rem;
    }
}

@media (min-width: 1300px) {
    .hero-img { 
        display: flex;
        width: 20%;
    }
}

section {
    width: 100%;
    text-align: center;
}

.section-content {
    text-align: left;
}

section ul {
    list-style: none;
    padding: 0 8px;
}

.card-container {
    display: grid;
    grid-template-columns: repeat(1, 1fr); /* 1fr for mobile */
    grid-auto-rows: 1fr;
    gap: 20px;

    margin: 15px;
    
    text-align: left;
}

.card-container .card {
    border: var(--border-card);
    border-top: 1px solid var(--highlight);
    border-radius: var(--radius);
    background-image: var(--gradient);

    padding: 10px 20px;

    text-decoration: none;
    color: var(--text);
}

.card .card-header {
    display: flex;
    flex-direction: row;
    gap: 8px;
    align-items: center;
}

.card .number {
    display: flex;
    justify-content: center;
    align-items: center;

    border-radius: var(--radius-sm);

    padding: 4px;
    width: 1.5rem;
    height: 1.5rem;
}

.pricing-card {
    min-height: fit-content;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.premium-card {  
    background: 
        radial-gradient(
            circle at 20% 20%,
            rgba(225, 255, 0, 0.5),
            color-mix(in srgb, var(--confirm-bg) 30%, transparent)
            
        ),
        radial-gradient(
            circle at 100% 75%,
            rgba(255, 0, 0, 0.5),
            var(--confirm-bg),
            color-mix(in srgb, var(--confirm-bg) 33%, transparent),
            color-mix(in srgb, var(--confirm-bg) 75%, transparent)
        );

    background-size: 300% 300%;
    animation: warpAnimation 32s ease infinite;

    border-radius: var(--radius);
    padding: 10px 20px 20px 20px;

    text-decoration: none;
    color: var(--text);
}

.number.blue  {background-color: var(--confirm-bg);}
.number.red   {background-color: var(--error-bg);}
.number.green {background-color: var(--success-bg);}

.side-by-side {
    display: grid;
    gap: 10px;
}

.signup {
    background-color: var(--confirm-bg);
    padding: 10px 20px;
    border-radius: var(--radius);
    text-decoration: none;
    color: var(--text);
    width: fit-content;
}

@media (min-width: 768px) {

    .how-grade9-works-section {
        box-sizing: border-box;
    }

    .card-container {
        grid-template-columns: repeat(3, 1fr);
    }

    .card-container .card {
        padding: 20px;
    }

    .card .card-header {
        gap: 15px;
    }

    .card h3 {
        margin: 0;
    }

    .side-by-side {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 20px;
    }

    .pricing-card {
        min-height: 300px;
    }

}



.mission {
    text-align: right;
    margin: 4rem 2rem;
    font-weight: bold;
    font-size: clamp(1rem, 4vw + 1rem, 4rem);
    background-color: transparent;
}