/* ======================================================
   BREADCRUMB
====================================================== */

.breadcrumb-section {
    padding: 18px 0;

    background:
        var(--color-background);

    border-bottom:
        1px solid
        var(--color-border);
}


.breadcrumb {
    display: flex;

    align-items: center;

    flex-wrap: wrap;

    gap: 9px;

    color:
        var(--color-text-muted);

    font-size: 0.78rem;
}


.breadcrumb a {
    transition:
        color var(--transition-fast);
}


.breadcrumb a:hover {
    color:
        var(--color-primary);
}


.breadcrumb strong {
    color:
        var(--color-text-secondary);

    font-weight: 700;
}



/* ======================================================
   HERO SD
====================================================== */

.sd-hero {
    position: relative;

    overflow: hidden;

    background:
        radial-gradient(
            circle at 85% 20%,
            rgba(37, 99, 235, 0.10),
            transparent 32%
        ),
        radial-gradient(
            circle at 10% 85%,
            rgba(16, 185, 129, 0.08),
            transparent 28%
        ),
        linear-gradient(
            180deg,
            #f8fbff,
            #ffffff
        );
}


.sd-hero-container {
    min-height: 600px;

    display: grid;

    grid-template-columns:
        minmax(0, 1fr)
        minmax(400px, 0.9fr);

    align-items: center;

    gap: 80px;

    padding-top: 78px;

    padding-bottom: 88px;
}



/* ======================================================
   HERO CONTENT
====================================================== */

.sd-hero-content h1 {
    max-width: 720px;

    margin-bottom: 24px;

    font-size:
        clamp(
            2.8rem,
            5vw,
            4.8rem
        );

    letter-spacing:
        -0.05em;
}


.sd-hero-content > p {
    max-width: 650px;

    margin-bottom: 32px;

    color:
        var(--color-text-muted);

    font-size: 1.06rem;
}


.sd-hero-actions {
    display: flex;

    flex-wrap: wrap;

    gap: 14px;
}



/* ======================================================
   HERO VISUAL
====================================================== */

.sd-learning-board {
    padding: 28px;

    background:
        rgba(255, 255, 255, 0.95);

    border:
        1px solid
        var(--color-border);

    border-radius:
        var(--radius-extra-large);

    box-shadow:
        var(--shadow-large);
}


.learning-board-header {
    display: flex;

    align-items: center;

    justify-content: space-between;

    gap: 20px;

    margin-bottom: 22px;

    color:
        var(--color-text-secondary);

    font-size: 0.78rem;

    font-weight: 750;
}


.learning-board-status {
    padding: 6px 10px;

    color: #047857;

    background: #ecfdf5;

    border-radius: 999px;

    font-size: 0.7rem;
}



.learning-board-main {
    min-height: 230px;

    display: flex;

    flex-direction: column;

    align-items: center;

    justify-content: center;

    padding: 30px;

    text-align: center;

    color: #ffffff;

    background:
        linear-gradient(
            135deg,
            #2563eb,
            #4f46e5
        );

    border-radius:
        var(--radius-large);
}


.board-label {
    margin-bottom: 14px;

    color:
        rgba(255, 255, 255, 0.70);

    font-size: 0.7rem;

    font-weight: 750;

    text-transform: uppercase;

    letter-spacing: 0.08em;
}


.board-equation {
    margin-bottom: 15px;

    font-size:
        clamp(
            2.7rem,
            6vw,
            4.2rem
        );

    font-weight: 850;

    letter-spacing:
        -0.06em;
}


.learning-board-main p {
    max-width: 300px;

    margin-bottom: 0;

    color:
        rgba(255, 255, 255, 0.76);

    font-size: 0.82rem;
}



.learning-board-grid {
    display: grid;

    grid-template-columns:
        repeat(4, 1fr);

    gap: 10px;

    margin-top: 14px;
}


.learning-board-grid div {
    min-height: 90px;

    display: flex;

    flex-direction: column;

    align-items: center;

    justify-content: center;

    padding: 12px;

    background:
        var(--color-background-soft);

    border:
        1px solid
        var(--color-border);

    border-radius: 12px;

    text-align: center;
}


.learning-board-grid strong {
    margin-bottom: 4px;

    color:
        var(--color-primary);

    font-size: 1.05rem;
}


.learning-board-grid span {
    color:
        var(--color-text-muted);

    font-size: 0.65rem;
}



/* ======================================================
   PILIH KELAS
====================================================== */

.sd-class-section {
    background:
        var(--color-background);
}


.sd-class-grid {
    display: grid;

    grid-template-columns:
        repeat(
            3,
            minmax(0, 1fr)
        );

    gap: 22px;
}


.sd-class-card {
    min-height: 350px;

    display: flex;

    flex-direction: column;

    padding: 26px;

    background:
        var(--color-surface);

    border:
        1px solid
        var(--color-border);

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

    transition:
        transform var(--transition),
        border-color var(--transition),
        box-shadow var(--transition);
}


.sd-class-card:hover {
    transform:
        translateY(-7px);

    border-color:
        rgba(37, 99, 235, 0.28);

    box-shadow:
        var(--shadow-medium);
}


.class-number {
    width: 72px;

    height: 72px;

    display: grid;

    place-items: center;

    margin-bottom: 46px;

    color:
        var(--color-primary-dark);

    background:
        var(--color-primary-light);

    border-radius:
        20px;

    font-size: 2rem;

    font-weight: 900;
}


.class-content {
    flex: 1;
}


.class-label {
    display: block;

    margin-bottom: 7px;

    color:
        var(--color-text-muted);

    font-size: 0.68rem;

    font-weight: 800;

    text-transform: uppercase;

    letter-spacing:
        0.07em;
}


.class-content h3 {
    margin-bottom: 12px;

    font-size: 1.35rem;
}


.class-content p {
    margin-bottom: 26px;

    color:
        var(--color-text-muted);

    font-size: 0.88rem;
}


.class-action {
    display: flex;

    align-items: center;

    justify-content: space-between;

    gap: 14px;

    padding-top: 18px;

    border-top:
        1px solid
        var(--color-border);

    color:
        var(--color-primary);

    font-size: 0.82rem;

    font-weight: 750;
}


.class-action strong {
    font-size: 1.1rem;

    transition:
        transform var(--transition-fast);
}


.sd-class-card:hover
.class-action strong {
    transform:
        translateX(5px);
}



/* ======================================================
   FOKUS PEMBELAJARAN
====================================================== */

.sd-focus-section {
    background:
        var(--color-background-soft);
}


.sd-focus-wrapper {
    display: grid;

    grid-template-columns:
        minmax(0, 0.85fr)
        minmax(440px, 1.15fr);

    align-items: center;

    gap: 80px;
}


.sd-focus-content h2 {
    max-width: 650px;

    margin-bottom: 22px;

    font-size:
        clamp(
            2.2rem,
            4.3vw,
            3.7rem
        );

    letter-spacing:
        -0.04em;
}


.sd-focus-content p {
    max-width: 620px;

    margin-bottom: 28px;

    color:
        var(--color-text-muted);
}



/* ======================================================
   FOCUS FLOW
====================================================== */

.sd-focus-flow {
    padding: 28px;

    background:
        #ffffff;

    border:
        1px solid
        var(--color-border);

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

    box-shadow:
        var(--shadow-small);
}


.focus-flow-card {
    display: grid;

    grid-template-columns:
        48px 1fr;

    align-items: center;

    gap: 16px;

    padding: 16px;

    background:
        var(--color-background-soft);

    border:
        1px solid
        var(--color-border);

    border-radius:
        var(--radius-medium);
}


.focus-flow-card > span {
    width: 42px;

    height: 42px;

    display: grid;

    place-items: center;

    color:
        var(--color-primary);

    background:
        var(--color-primary-light);

    border-radius:
        12px;

    font-size: 0.7rem;

    font-weight: 850;
}


.focus-flow-card strong {
    display: block;

    margin-bottom: 3px;

    font-size: 0.9rem;
}


.focus-flow-card p {
    margin-bottom: 0;

    color:
        var(--color-text-muted);

    font-size: 0.77rem;
}


.focus-flow-arrow {
    height: 25px;

    display: grid;

    place-items: center;

    color:
        #94a3b8;
}



/* ======================================================
   LEARNING EXPERIENCE
====================================================== */

.sd-learning-section {
    background:
        var(--color-background);
}


.sd-learning-grid {
    display: grid;

    grid-template-columns:
        repeat(
            4,
            minmax(0, 1fr)
        );

    gap: 20px;
}


.sd-learning-card {
    padding: 26px;

    background:
        #ffffff;

    border:
        1px solid
        var(--color-border);

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

    box-shadow:
        var(--shadow-small);
}


.sd-learning-icon {
    width: 50px;

    height: 50px;

    display: grid;

    place-items: center;

    margin-bottom: 30px;

    color:
        var(--color-primary);

    background:
        var(--color-primary-light);

    border-radius:
        14px;

    font-size: 0.9rem;

    font-weight: 900;
}


.sd-learning-card h3 {
    margin-bottom: 11px;

    font-size: 1.08rem;
}


.sd-learning-card p {
    margin-bottom: 0;

    color:
        var(--color-text-muted);

    font-size: 0.84rem;
}



/* ======================================================
   CTA
====================================================== */

.sd-cta-section {
    padding-top: 0;

    background:
        var(--color-background);
}


.sd-cta-wrapper {
    display: flex;

    align-items: center;

    justify-content: space-between;

    gap: 50px;

    padding: 50px;

    color: #ffffff;

    background:
        linear-gradient(
            135deg,
            #2563eb,
            #4f46e5
        );

    border-radius:
        var(--radius-extra-large);

    box-shadow:
        0 30px 70px
        rgba(37, 99, 235, 0.20);
}


.sd-cta-label {
    display: block;

    margin-bottom: 8px;

    color:
        #dbeafe;

    font-size: 0.74rem;

    font-weight: 800;

    text-transform: uppercase;

    letter-spacing:
        0.08em;
}


.sd-cta-wrapper h2 {
    margin-bottom: 10px;

    font-size:
        clamp(
            2rem,
            4vw,
            3.1rem
        );

    letter-spacing:
        -0.04em;
}


.sd-cta-wrapper p {
    margin-bottom: 0;

    color:
        rgba(255, 255, 255, 0.78);
}



/* ======================================================
   TABLET
====================================================== */

@media (max-width: 1024px) {

    .sd-hero-container {
        grid-template-columns:
            1fr 400px;

        gap: 45px;
    }


    .sd-class-grid {
        grid-template-columns:
            repeat(
                2,
                minmax(0, 1fr)
            );
    }


    .sd-focus-wrapper {
        grid-template-columns:
            1fr;

        gap: 50px;
    }


    .sd-learning-grid {
        grid-template-columns:
            repeat(
                2,
                minmax(0, 1fr)
            );
    }

}



/* ======================================================
   TABLET KECIL
====================================================== */

@media (max-width: 860px) {

    .sd-hero-container {
        min-height: auto;

        grid-template-columns:
            1fr;

        gap: 50px;

        padding-top: 65px;

        padding-bottom: 70px;
    }


    .sd-hero-content {
        max-width: 720px;
    }


    .sd-hero-visual {
        width: 100%;

        max-width: 620px;
    }


    .sd-cta-wrapper {
        align-items:
            flex-start;

        flex-direction:
            column;
    }

}



/* ======================================================
   MOBILE
====================================================== */

@media (max-width: 600px) {

    .breadcrumb-section {
        padding:
            14px 0;
    }


    .sd-hero-container {
        padding-top:
            50px;

        padding-bottom:
            58px;
    }


    .sd-hero-content h1 {
        font-size:
            clamp(
                2.5rem,
                12vw,
                3.5rem
            );
    }


    .sd-hero-actions {
        flex-direction:
            column;
    }


    .sd-hero-actions
    .button {
        width:
            100%;
    }


    .sd-learning-board {
        padding:
            18px;
    }


    .learning-board-grid {
        grid-template-columns:
            repeat(
                2,
                1fr
            );
    }


    .sd-class-grid {
        grid-template-columns:
            1fr;
    }


    .sd-class-card {
        min-height:
            auto;
    }


    .class-number {
        margin-bottom:
            36px;
    }


    .sd-focus-flow {
        padding:
            18px;
    }


    .sd-learning-grid {
        grid-template-columns:
            1fr;
    }


    .sd-cta-wrapper {
        padding:
            36px 24px;
    }


    .sd-cta-wrapper
    .button {
        width:
            100%;
    }

}