/* ==========================================================================
   WHO WE HELP — about page section
   Section header (eyebrow + serif heading + description), a 3-column card
   grid (3×2 on desktop), and a footer tagline strip. Same design language
   as .du-principles (_principles-grid.css): radius-lg, shadow-level-1,
   staggered card reveal, hover lift — extended here with a top-rule accent,
   an icon chip + caps label identity row, and a "Primary Focus" sub-block.
   ========================================================================== */

/* ---- Section shell ---- */
.du-who-we-help {
    background-color: var(--background);
    padding-top: 100px;
    padding-bottom: 100px;
}

/* ---- Section header ---- */
.du-who-we-help__header {
    max-width: 600px;
    margin: 0 auto var(--space-xl);
    text-align: center;
}

.du-who-we-help__eyebrow {
    display: block;
    color: var(--on-tertiary-container);
    margin: 0 0 var(--space-xs);
    letter-spacing: 0.1em;
}

.du-who-we-help__heading {
    margin: 0 0 var(--space-sm);
    color: var(--on-background);
}

.du-who-we-help__description {
    color: var(--on-surface-variant);
    margin: 0;
}

/* ---- Card grid — mobile-first, single column ---- */
.du-who-we-help__grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-md);
}

/* ---- Card shell ---- */
.du-who-we-help-card {
    background-color: var(--surface);
    border: var(--border-width) solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-level-1);
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;

    /* entrance animation — same pattern as .du-principle-card */
    opacity: 0;
    transform: translateY(16px);
    transition: opacity var(--transition-slow), transform var(--transition-slow),
                box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.du-who-we-help-card.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.du-who-we-help-card:hover,
.du-who-we-help-card:focus-within {
    border-color: var(--primary-hover);
    box-shadow: var(--shadow-level-2);
}

.du-who-we-help-card.is-visible:hover,
.du-who-we-help-card.is-visible:focus-within {
    transform: translateY(-3px);
}

@media (prefers-reduced-motion: reduce) {
    .du-who-we-help-card {
        transition: none;
        transform: none;
        opacity: 1;
    }
    .du-who-we-help-card:hover {
        transform: none;
    }
}

/* ---- Top rule accent (gold bar above each card) ---- */
.du-who-we-help-card__top-rule {
    width: 32px;
    height: 3px;
    background-color: var(--on-tertiary-container);
    border-radius: var(--radius-full);
    margin-bottom: var(--space-md);
    flex-shrink: 0;
}

/* ---- Identity row: icon chip + caps label ---- */
.du-who-we-help-card__identity {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    margin-bottom: var(--space-md);
}

.du-who-we-help-card__icon-chip {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    background-color: var(--surface-container-low);
    color: var(--primary);
    flex-shrink: 0;
    transition: transform var(--transition-fast), background-color var(--transition-fast);
}

.du-who-we-help-card:hover .du-who-we-help-card__icon-chip,
.du-who-we-help-card:focus-within .du-who-we-help-card__icon-chip {
    transform: translateY(-2px) scale(1.05);
    background-color: var(--surface-container-high);
}

.du-who-we-help-card__label {
    color: var(--on-surface-variant);
    letter-spacing: 0.08em;
}

/* ---- Title ---- */
.du-who-we-help-card__title {
    margin: 0 0 var(--space-xs);
    color: var(--on-background);
    /* Slightly softer than headline-xl; clamp so it scales gracefully */
    font-size: clamp(1.3rem, 1.8vw, var(--headline-lg-size));
}

/* ---- Intro copy ---- */
.du-who-we-help-card__intro {
    color: var(--on-surface-variant);
    margin: 0 0 var(--space-md);
    flex: 1; /* pushes focus block to the bottom of every card */
}

/* ---- Primary Focus block ---- */
.du-who-we-help-card__focus {
    border-top: var(--border-width) solid var(--border);
    padding-top: var(--space-md);
    margin-top: auto;
}

.du-who-we-help-card__focus-header {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: var(--space-xs);
    color: var(--primary);
}

.du-who-we-help-card__focus-label {
    color: var(--on-background);
    letter-spacing: 0.06em;
}

.du-who-we-help-card__focus-text {
    color: var(--on-surface-variant);
    margin: 0;
}

/* ---- Footer tagline strip ---- */
.du-who-we-help__footer {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    margin-top: var(--space-xl);
    padding: var(--space-md) var(--space-lg);
    background-color: var(--surface-container-low);
    border-radius: var(--radius-lg);
}

.du-who-we-help__footer-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    background-color: var(--surface-container);
    color: var(--primary);
    flex-shrink: 0;
}

.du-who-we-help__footer-text {
    color: var(--on-surface-variant);
    margin: 0;
}

/* ==========================================================================
   TABLET — 768–1024px: two columns
   ========================================================================== */
@media (min-width: 768px) and (max-width: 1024px) {
    .du-who-we-help__grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

/* ==========================================================================
   DESKTOP — >= 1025px: three columns
   ========================================================================== */
@media (min-width: 1025px) {
    .du-who-we-help__grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
        align-items: stretch;
    }
}

/* ==========================================================================
   MOBILE — < 768px: tighter vertical rhythm
   ========================================================================== */
@media (max-width: 767px) {
    .du-who-we-help {
        padding-top: 48px;
        padding-bottom: 48px;
    }

    .du-who-we-help__header {
        margin-bottom: var(--space-lg);
    }

    .du-who-we-help-card {
        padding: var(--space-md);
    }

    .du-who-we-help__footer {
        flex-direction: column;
        text-align: center;
        padding: var(--space-md);
    }
}