/* ============================================================
   THE REF PAGE
   Advertising & Affiliate Modules
   ------------------------------------------------------------
   Used for:
   - Amazon Associates
   - Affiliate recommendations
   - Future display advertising
   - Future Google AdSense placements
   ============================================================ */


/* ============================================================
   1. AD MODULE
   ============================================================ */

.ad-module {
    width: 100%;

    margin:
        var(--space-5) 0;

    border:
        var(--border-width) solid var(--color-border);

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


/* ============================================================
   2. AD MODULE HEADER
   ============================================================ */

.ad-module-header {
    display: flex;
    align-items: center;
    justify-content: space-between;

    gap: var(--space-3);

    min-height: 48px;

    padding:
        var(--space-2) var(--space-3);

    border-bottom:
        var(--border-width) solid var(--color-border);

    background:
        var(--color-surface-2);
}


/* ------------------------------------------------------------
   Header title
   ------------------------------------------------------------ */

.ad-module-heading {
    display: flex;
    align-items: center;

    gap: var(--space-2);

    min-width: 0;
}

.ad-module-icon {
    display: grid;
    place-items: center;

    flex: 0 0 auto;

    width: 30px;
    height: 30px;

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

    background:
        var(--color-accent);

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

.ad-module-title {
    margin: 0;

    color:
        var(--color-text);

    font-family:
        var(--font-mono);

    font-size:
        .72rem;

    font-weight: 800;

    letter-spacing:
        .055em;

    line-height: 1.2;

    text-transform:
        uppercase;
}


/* ------------------------------------------------------------
   Sponsored / affiliate label
   ------------------------------------------------------------ */

.ad-module-label {
    flex: 0 0 auto;

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

    font-family:
        var(--font-mono);

    font-size:
        .58rem;

    font-weight: 800;

    letter-spacing:
        .055em;

    line-height: 1;

    text-transform:
        uppercase;
}


/* ============================================================
   3. AD INTRO
   ============================================================ */

.ad-module-intro {
    padding:
        var(--space-3);

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

.ad-module-intro p {
    max-width: 760px;

    margin: 0;

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

    font-size:
        var(--text-sm);

    line-height: 1.55;
}


/* ============================================================
   4. AFFILIATE PRODUCT GRID
   ============================================================ */

.ad-products {
    display: grid;

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

    min-width: 0;
}


/* ============================================================
   5. PRODUCT CARD
   ============================================================ */

.ad-product {
    display: flex;
    flex-direction: column;

    min-width: 0;

    padding:
        var(--space-4);

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

    background:
        var(--color-surface);

    color:
        var(--color-text);

    text-decoration:
        none;

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

.ad-product:last-child {
    border-right: 0;
}


/* ------------------------------------------------------------
   Hover
   ------------------------------------------------------------ */

.ad-product:hover,
.ad-product:focus-visible {
    background:
        var(--color-surface-2);

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


/* ------------------------------------------------------------
   Category
   ------------------------------------------------------------ */

.ad-product-category {
    display: block;

    margin-bottom:
        var(--space-2);

    color:
        var(--color-accent);

    font-family:
        var(--font-mono);

    font-size:
        .6rem;

    font-weight: 800;

    letter-spacing:
        .055em;

    line-height: 1;

    text-transform:
        uppercase;
}


/* ------------------------------------------------------------
   Product title
   ------------------------------------------------------------ */

.ad-product-title {
    display: block;

    margin-bottom:
        var(--space-2);

    color:
        var(--color-text);

    font-family:
        var(--font-display);

    font-size:
        clamp(1rem,
            1.6vw,
            1.25rem);

    font-weight: 850;

    font-stretch:
        var(--font-stretch-display);

    letter-spacing:
        .025em;

    line-height: 1.05;

    text-transform:
        uppercase;
}


/* ------------------------------------------------------------
   Description
   ------------------------------------------------------------ */

.ad-product-description {
    flex: 1;

    margin:
        0 0 var(--space-3);

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

    font-size:
        var(--text-sm);

    line-height: 1.5;
}


/* ------------------------------------------------------------
   Product specs
   ------------------------------------------------------------ */

.ad-product-specs {
    display: flex;
    flex-wrap: wrap;

    gap:
        .35rem;

    margin-bottom:
        var(--space-3);
}

.ad-product-spec {
    display: inline-flex;
    align-items: center;

    min-height: 24px;

    padding:
        .2rem .4rem;

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

    background:
        var(--color-bg);

    color:
        var(--color-text);

    font-family:
        var(--font-mono);

    font-size:
        .56rem;

    font-weight: 750;

    letter-spacing:
        .035em;

    line-height: 1;
}


/* ------------------------------------------------------------
   CTA
   ------------------------------------------------------------ */

.ad-product-action {
    display: flex;
    align-items: center;
    justify-content: space-between;

    gap: var(--space-2);

    margin-top: auto;

    padding-top:
        var(--space-3);

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

    color:
        var(--color-text);

    font-family:
        var(--font-mono);

    font-size:
        .65rem;

    font-weight: 800;

    letter-spacing:
        .045em;

    line-height: 1;

    text-transform:
        uppercase;
}

.ad-product-action i {
    color:
        var(--color-accent);

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

.ad-product:hover .ad-product-action i,
.ad-product:focus-visible .ad-product-action i {
    transform:
        translateX(3px);
}


/* ============================================================
   6. AFFILIATE DISCLOSURE
   ============================================================ */

.ad-disclosure {
    display: flex;
    align-items: flex-start;

    gap:
        var(--space-2);

    padding:
        var(--space-2) var(--space-3);

    border-top:
        var(--border-width) solid var(--color-border);

    background:
        var(--color-bg);

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

    font-family:
        var(--font-mono);

    font-size:
        .58rem;

    line-height: 1.5;
}

.ad-disclosure i {
    flex: 0 0 auto;

    margin-top:
        .12rem;

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


/* ============================================================
   7. AMAZON MODULE
   ============================================================ */

.ad-module--amazon {
    position: relative;
}

.ad-module--amazon::before {
    position: absolute;

    top: 0;
    left: 0;

    width: 5px;
    height: 48px;

    background:
        var(--color-accent);

    content: "";
}


/* ============================================================
   8. DISPLAY AD SLOT
   ------------------------------------------------------------
   Reserved for future Google / AdSense usage.
   ============================================================ */

.ad-display-slot {
    display: grid;
    place-items: center;

    width: 100%;

    min-height: 120px;

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

    background:
        var(--color-surface-2);
}

.ad-display-label {
    color:
        var(--color-text-muted);

    font-family:
        var(--font-mono);

    font-size:
        .55rem;

    font-weight: 700;

    letter-spacing:
        .06em;

    text-transform:
        uppercase;
}


/* ============================================================
   9. RESPONSIVE
   ============================================================ */

@media (max-width: 1100px) {

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

    .ad-product:nth-child(2n) {
        border-right: 0;
    }

    .ad-product:nth-child(-n + 2) {
        border-bottom:
            1px solid var(--color-border-soft);
    }

}


@media (max-width: 600px) {

    .ad-products {
        grid-template-columns: 1fr;
    }

    .ad-product {
        border-right: 0;

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

    .ad-product:last-child {
        border-bottom: 0;
    }


    .ad-module-header {
        align-items: flex-start;

        flex-direction: column;

        gap:
            var(--space-2);
    }

    .ad-module-label {
        padding-left: 38px;
    }

    .ad-product {
        padding:
            var(--space-3);
    }

}