/* ==========================================================================
   REALITY CHECK™ PROCESS — about page section
   Centred header (eyebrow rule + serif heading + description), a decorative
   icon tracker row with dashed connectors, four editorial process cards in
   a 4-column grid, and a two-column editorial note strip at the bottom.

   Design language: identical to _principles-grid.css and _what-we-offer.css
   — same card shell (radius-lg, shadow-level-1, border, hover lift), same
   staggered reveal, same spacing scale. No values are invented here that
   do not already exist as tokens.
   ========================================================================== */

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

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

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

/* Gold rule directly beneath the eyebrow — matches the design's short divider */
.du-rcp__eyebrow-rule {
    display: block;
    width: 32px;
    height: 2px;
    background-color: var(--on-tertiary-container);
    border-radius: var(--radius-full);
    margin: 0 auto var(--space-md);
}

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

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

/* ==========================================================================
   ICON TRACKER ROW
   Decorative only (aria-hidden in markup). Centred flex row:
   [number + chip]  [dashed line → arrow]  [number + chip]  …
   Hidden on mobile — the cards alone communicate sequence there.
   ========================================================================== */
.du-rcp__tracker {
    display: none; /* mobile: hidden */
}

@media (min-width: 768px) {
    .du-rcp__tracker {
        display: flex;
        align-items: center;
        justify-content: center;
        margin-bottom: var(--space-lg);
    }
}

.du-rcp__tracker-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
    flex-shrink: 0;
}

.du-rcp__tracker-number {
    color: var(--on-tertiary-container);
    letter-spacing: 0.06em;
}

/* Icon chip — reuses the same 48px circle pattern as
   .du-who-we-help-card__icon-chip and .du-principle-card__icon */
.du-rcp__tracker-chip {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background-color: var(--surface-container-low);
    color: var(--primary);
    border: var(--border-width) solid var(--border);
    transition: background-color var(--transition-fast);
}

/* Connector: dashed line + chevron arrow */
.du-rcp__connector {
    display: flex;
    align-items: center;
    flex: 1;
    min-width: var(--space-lg);
    padding: 0 var(--space-xs);
    /* vertically align with the centre of the chip, not the number */
    margin-top: calc(var(--label-caps-line) + var(--space-xs));
}

.du-rcp__connector-line {
    flex: 1;
    height: 0;
    border-top: 2px dashed var(--outline-variant);
}

.du-rcp__connector-arrow {
    display: inline-flex;
    color: var(--outline-variant);
    flex-shrink: 0;
}

/* ==========================================================================
   PROCESS CARDS
   Ordered list displayed as a 4-column grid on desktop. Each card is an <li>
   inside an <ol> — the ordered list is semantically correct since the steps
   have a defined sequence. Card shell inherits the same border / radius /
   shadow / hover as .du-principle-card and .du-help-card.
   ========================================================================== */
.du-rcp__grid {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-md);
}

.du-rcp-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;
    text-align: center;

    /* staggered entrance — 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-rcp-card.is-visible {
    opacity: 1;
    transform: translateY(0);
}

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

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

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

/* Card title — slightly smaller than headline-lg's native 32px for card density */
.du-rcp-card__title {
    font-size: clamp(1.3rem, 1.8vw, var(--headline-lg-size));
    margin: 0 0 var(--space-xs);
    color: var(--on-background);
}

/* Gold label-caps tag below the title */
.du-rcp-card__tag {
    color: var(--on-tertiary-container);
    letter-spacing: 0.08em;
    margin: 0 0 var(--space-md);
}

/* Horizontal rule separating tag from description — subtle, editorial */
.du-rcp-card__tag::after {
    content: '';
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--on-tertiary-container);
    border-radius: var(--radius-full);
    margin: var(--space-xs) auto 0;
    opacity: 0.5;
}

.du-rcp-card__description {
    color: var(--on-surface-variant);
    margin: 0;
}

/* ==========================================================================
   EDITORIAL NOTE STRIP
   Same surface treatment as .du-who-we-help__footer. On desktop: three
   columns — icon | left-quote | divider | right-copy. On mobile: stacked.
   ========================================================================== */
.du-rcp__note {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    margin-top: var(--space-xl);
    padding: var(--space-lg);
    background-color: var(--surface-container-low);
    border-radius: var(--radius-lg);
    border: var(--border-width) solid var(--border);
}

.du-rcp__note-icon-wrap {
    flex-shrink: 0;
}

.du-rcp__note-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    background-color: var(--surface-container);
    color: var(--primary);
}

.du-rcp__note-left {
    flex: 0 0 auto;
}

.du-rcp__note-quote {
    font-size: clamp(1.1rem, 1.6vw, 1.5rem);
    color: var(--on-background);
    margin: 0;
    line-height: 1.35;
}

/* Vertical gold rule between quote and copy */
.du-rcp__note-divider {
    flex-shrink: 0;
    width: 2px;
    align-self: stretch;
    background-color: var(--on-tertiary-container);
    border-radius: var(--radius-full);
    opacity: 0.4;
}

.du-rcp__note-right {
    flex: 1;
}

.du-rcp__note-copy {
    color: var(--on-surface-variant);
    margin: 0;
}

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

/* ==========================================================================
   DESKTOP — >= 1025px: four columns
   ========================================================================== */
@media (min-width: 1025px) {
    .du-rcp__grid {
        grid-template-columns: repeat(4, minmax(0, 1fr));
        align-items: stretch;
    }
}

/* ==========================================================================
   MOBILE — < 768px: tighter rhythm, stacked note
   ========================================================================== */
@media (max-width: 767px) {
    .du-rcp {
        padding-top: 48px;
        padding-bottom: 48px;
    }

    .du-rcp__header {
        margin-bottom: var(--space-lg);
    }

    .du-rcp-card {
        padding: var(--space-md);
    }

    .du-rcp__note {
        flex-direction: column;
        text-align: center;
        gap: var(--space-md);
        padding: var(--space-md);
    }

    .du-rcp__note-divider {
        width: 32px;
        height: 2px;
        align-self: auto;
    }

    .du-rcp__note-quote {
        font-size: clamp(1.1rem, 4vw, 1.4rem);
    }
}