/* ============================================================
   RESOURCES — WHITEPAPERS PAGE
   ============================================================ */

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

.wp-hero {
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    overflow: hidden;
}

.wp-hero__grid {
    display: grid;
    grid-template-columns: 1fr;
    min-height: 200px;
    width: 100%;
}

@media (min-width: 768px) {
    .wp-hero__grid {
        grid-template-columns: 60fr 40fr;
        min-height: 220px;
    }
}

.wp-hero__content {
    padding-top: var(--section-py-mobile);
    padding-bottom: var(--section-py-mobile);
    padding-left: max(1.5rem, 3vw);
    padding-right: 1.5rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 1rem;
}

@media (min-width: 1024px) {
    .wp-hero__content {
        padding-top: var(--section-py);
        padding-bottom: var(--section-py);
        padding-right: 2rem;
    }
}

.wp-hero__heading {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 1.05;
    color: var(--color-navy);
    margin: 0;
}

.wp-hero__body {
    font-size: 1rem;
    color: var(--color-text-sec);
    line-height: 1.65;
    margin: 0;
    max-width: 440px;
}

.wp-hero__visual {
    display: none;
}

@media (min-width: 768px) {
    .wp-hero__visual {
        display: block;
        position: relative;
        overflow: hidden;
    }

    .wp-hero__visual::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        width: 20%;
        height: 100%;
        background: linear-gradient(to right, var(--color-white) 0%, transparent 100%);
        z-index: 1;
        pointer-events: none;
    }
}

.wp-hero__img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: left center;
    display: block;
}

/* ============================================================
   WHITEPAPER CARDS
   ============================================================ */

.wp-list {
    padding-block: var(--section-py-mobile);
    background-color: var(--color-light-bg);
    border-bottom: 1px solid var(--color-border);
}

@media (min-width: 1024px) {
    .wp-list { padding-block: var(--section-py); }
}

.wp-list__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

@media (min-width: 768px) {
    .wp-list__grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.wp-card {
    display: flex;
    flex-direction: row;
    align-items: stretch;
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    overflow: visible;
    padding: 1.75rem 1.75rem 1.75rem 1.5rem;
    gap: 1.5rem;
    box-shadow: 0 1px 4px rgba(13, 27, 53, 0.05);
    transition: box-shadow 0.2s;
}

.wp-card:hover {
    box-shadow: 0 4px 16px rgba(13, 27, 53, 0.1);
}

/* ---- 3D book cover ---- */

.wp-card__cover {
    flex-shrink: 0;
    width: 110px;
    perspective: 800px;
}

.wp-card__cover-inner {
    width: 110px;
    height: 150px;
    position: relative;
    transform-style: preserve-3d;
    transform: rotateY(-12deg);
    transition: transform 0.35s ease;
}

.wp-card:hover .wp-card__cover-inner {
    transform: rotateY(-5deg);
}

/* front face */
.wp-card__cover-front {
    position: absolute;
    inset: 0;
    border-radius: 2px 4px 4px 2px;
    overflow: hidden;
    backface-visibility: hidden;
    box-shadow:
        4px 6px 16px rgba(13, 27, 53, 0.18),
        1px 0 0 rgba(0,0,0,0.08) inset;
}

.wp-card__cover-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* spine */
.wp-card__cover-front::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 6px;
    height: 100%;
    background: linear-gradient(to right, rgba(0,0,0,0.15), rgba(0,0,0,0.04));
    z-index: 1;
}

/* ---- card body ---- */

.wp-card__body {
    display: flex;
    flex-direction: column;
    gap: 0.625rem;
    flex: 1;
    min-width: 0;
}

.wp-card__title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-navy);
    line-height: 1.3;
    margin: 0;
}

.wp-card__desc {
    font-size: 0.8125rem;
    color: var(--color-text-sec);
    line-height: 1.6;
    margin: 0;
}

.wp-card__bullets {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.wp-card__bullets li {
    font-size: 0.8125rem;
    color: var(--color-text-sec);
    padding-left: 1.375rem;
    position: relative;
    line-height: 1.5;
}

.wp-card__bullets li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.45em;
    width: 14px;
    height: 10px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='10' viewBox='0 0 14 10' fill='none'%3E%3Cpolyline points='1 5 5 9 13 1' stroke='%230057B8' stroke-width='1.75' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-size: contain;
}

.wp-card__download {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--color-interactive);
    text-decoration: none;
    margin-top: auto;
    padding-top: 0.625rem;
    transition: color var(--transition);
}

.wp-card__download:hover {
    color: var(--color-navy);
}

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

.wp-cta {
    background-color: var(--color-navy);
    padding-block: var(--section-py-mobile);
}

@media (min-width: 1024px) {
    .wp-cta { padding-block: 3rem; }
}

.wp-cta__inner {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

@media (min-width: 768px) {
    .wp-cta__inner {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
        gap: 3rem;
    }
}

.wp-cta__content {
    flex: 1;
}

.wp-cta__title {
    font-size: clamp(1.125rem, 2vw, 1.5rem);
    font-weight: 700;
    color: var(--color-white);
    line-height: 1.3;
    margin: 0 0 0.375rem;
}

.wp-cta__body {
    font-size: 0.9375rem;
    color: rgba(255, 255, 255, 0.65);
    line-height: 1.6;
    margin: 0;
}

.wp-cta__action {
    flex-shrink: 0;
}