/* ---------- section ---------- */

.challenges__container {
    --challenges-blue:   #007AC2;
    --challenges-orange: #D17938;
    --challenges-hover:  #D17938;

    position: relative;
    padding: 80px 20px;
    color: #fff;
    text-align: center;
    background-color: #0a1420;          /* fallback + colour behind the image */
}

.challenges__container--has-bg {
    background-repeat: no-repeat;
    background-position: center;
    background-size: cover;
}

/* darkening layer so text stays readable over any photo */
.challenges__container--has-bg::before {
    content: "";
    position: absolute;
    inset: 0;
    background: rgba(6, 16, 28, 0.90);
    pointer-events: none;
}

.challenges__container > * {
    position: relative;                 /* lift content above the overlay */
    z-index: 1;
}

/* ---------- intro ---------- */

.challenges__heading {
    max-width: 800px;
    margin: 0 auto 20px;
    font-size: 36px;
    font-weight: 600;
    line-height: 1.2;
}

.challenges__subheading {
    max-width: 560px;
    margin: 0 auto 60px;
    font-size: 16px;
    line-height: 1.5;
}

.challenges__subheading p:last-child {
    margin-bottom: 0;
}

/* ---------- grid ---------- */

.challenges__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 50px 40px;
    max-width: 1100px;
    margin: 0 auto 80px;
    text-align: left;
}

.challenge {
    --challenge-line: var(--challenges-blue);   /* default if no colour picked */
}

.challenge--blue   { --challenge-line: var(--challenges-blue); }
.challenge--orange { --challenge-line: var(--challenges-orange); }

.challenge__heading {
    margin: 0 0 20px;
    padding-left: 15px;
    border-left: 3px solid var(--challenge-line);
    font-size: 20px;
    font-weight: 600;
    line-height: 1.3;
    color: white;
}

.challenge__subheading {
    padding-left: 18px;                 /* 15px + the 3px border, so text aligns */
    font-size: 15px;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.85);
}

.challenge__subheading p:last-child {
    margin-bottom: 0;
}

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

.challenges__cta-heading {
    max-width: 800px;
    margin: 0 auto 20px;
    font-size: 32px;
    font-weight: 600;
    line-height: 1.2;
}

.challenges__cta-subheading {
    max-width: 620px;
    margin: 0 auto 40px;
    font-size: 16px;
    line-height: 1.5;
}

.challenges__cta-subheading p:last-child {
    margin-bottom: 0;
}

.challenges__button {
    display: inline-block;
    padding: 14px 60px;
    border-radius: 100px;
    background-color: var(--challenges-blue);
    color: #fff;
    font-size: 18px;
    font-weight: 500;
    text-decoration: none;
    transition: background-color 0.4s;
}

.challenges__button:hover,
.challenges__button:focus {
    background-color: var(--challenges-hover);
    color: #fff;
    text-decoration: none;
}

/* ---------- responsive ---------- */

@media (max-width: 900px) {
    .challenges__grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 600px) {
    .challenges__container { padding: 50px 20px; }
    .challenges__grid { grid-template-columns: 1fr; gap: 35px; margin-bottom: 50px; }
    .challenges__heading { font-size: 28px; }
    .challenges__cta-heading { font-size: 26px; }
    .challenges__button { padding: 14px 35px; width: 100%; max-width: 360px; }
}