/* ==========================================================================
   Case study template — shared across all 7 detail pages.
   Loads after estilos.css: reuses tokens, fluid type, grid and header.
   ========================================================================== */

/* ---- Hero -------------------------------------------------------------- */

.case-hero {
    row-gap: 40px;
    padding: 96px var(--pad) 72px;
}
.case-eyebrow { grid-column: 1 / span 12; display: flex; align-items: center; gap: 14px; font-weight: 600; color: var(--muted); }
.case-eyebrow .sq { width: 14px; height: 14px; }
.case-h1 { grid-column: 1 / span 12; }
.case-lead { grid-column: 1 / span 7; color: var(--text-2); }
.case-meta {
    grid-column: 9 / span 4;
    align-self: end;
    display: flex;
    flex-direction: column;
    font-size: 15px;
}
.case-meta-row {
    display: flex;
    justify-content: space-between;
    padding: 12px 0;
    border-top: 1px solid var(--rule);
}
.case-meta-row:first-child { border-top: 1.5px solid var(--ink); }
.case-meta-row:last-child { border-bottom: 1px solid var(--rule); }
.case-meta-row span:first-child { color: var(--muted); }
.case-meta-row span:last-child { font-weight: 600; }

@media (max-width: 767px) {
    .case-hero { display: flex; flex-direction: column; gap: 24px; padding: 88px var(--pad) 56px; }
    .case-lead, .case-meta { grid-column: auto; }
    .case-meta-row { font-size: 14px; }
}

/* ---- Impact band (dark, full-bleed) ------------------------------------ */

.impact-band {
    row-gap: 64px;
    margin-top: 120px;
    padding: 120px var(--pad);
    background: var(--ink);
    color: var(--paper);
}
.impact-band .section-head { grid-column: 1 / span 5; }
.impact-band .eyebrow { color: var(--muted-dark); }
.impact-band .lead-sm { grid-column: 7 / span 6; align-self: end; color: var(--text-2-dark); }

.stat-grid {
    grid-column: 1 / span 12;
    display: grid;
    grid-template-columns: repeat(var(--stat-cols, 4), minmax(0, 1fr));
    column-gap: var(--gutter);
}
.stat {
    display: flex;
    flex-direction: column;
    gap: 14px;
    padding-top: 24px;
    border-top: 1px solid var(--rule-dark);
}
.stat-on-paper { border-top: 1.5px solid var(--ink); }
.stat .num { color: inherit; }
.stat .accent { color: var(--ai); }
.stat-caption { font-size: 17px; line-height: 1.45; color: var(--text-2-dark); }
.stat-on-paper .stat-caption { color: var(--text-2); }

@media (max-width: 767px) {
    .impact-band { margin-top: 0; padding: 72px var(--pad); row-gap: 32px; display: flex; flex-direction: column; }
    .impact-band .section-head, .impact-band .lead-sm { grid-column: auto; }
    .stat-grid { grid-column: auto; grid-template-columns: repeat(2, minmax(0, 1fr)); row-gap: 32px; }
}

/* ---- Section head (Problem / Solution / etc.) -------------------------- */

.case-section { row-gap: 56px; padding: var(--section) var(--pad) 0; }
.case-section .section-head { grid-column: 1 / span 5; }
.case-section > .lead-sm { grid-column: 7 / span 6; align-self: end; color: var(--text-2); }

@media (max-width: 767px) {
    .case-section { display: flex; flex-direction: column; gap: 24px; padding: 72px var(--pad) 0; row-gap: 0; }
    .case-section .section-head, .case-section > .lead-sm { grid-column: auto; }
}

/* ---- Problem cards (A / B / C) ------------------------------------------ */

.problem-grid {
    grid-column: 1 / span 12;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    column-gap: var(--gutter);
}
.problem-card {
    display: flex;
    flex-direction: column;
    gap: 14px;
    padding-top: 22px;
    border-top: 1.5px solid var(--ink);
}
.problem-card .letter { font-size: 15px; font-weight: 600; color: var(--muted); }
.problem-card .body-lg { color: var(--text-2); }

.stat-pair {
    grid-column: 7 / span 6;
    align-self: end;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: var(--gutter);
}
.stat-pair-item { display: flex; flex-direction: column; gap: 10px; }
.stat-pair .num { font-size: clamp(44px, 40px + 3vw, 80px); }
.stat-pair-caption { font-size: 16px; line-height: 1.45; color: var(--text-2); }

.big-stat-block { grid-column: 7 / span 6; align-self: end; display: flex; flex-direction: column; gap: 12px; }
.big-stat-block .num { --fmin: 64; --fmax: 120; }
.big-stat-block .body-lg { color: var(--text-2); }

@media (max-width: 767px) {
    .problem-grid { grid-template-columns: 1fr; row-gap: 32px; }
    .stat-pair, .big-stat-block { grid-column: auto; }
}

/* ---- Feature grid (Solution) -------------------------------------------- */

.feature-grid {
    grid-column: 1 / span 12;
    display: grid;
    grid-template-columns: repeat(var(--feature-cols, 3), minmax(0, 1fr));
    column-gap: var(--gutter);
    row-gap: 48px;
}
.feature-item {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding-top: 20px;
    border-top: 1px solid var(--rule);
}
.feature-item .body-lg { color: var(--text-2); }

@media (max-width: 767px) {
    .feature-grid { grid-template-columns: 1fr; row-gap: 28px; }
}

/* ---- Step rows (How it works) ------------------------------------------- */

.steps { display: flex; flex-direction: column; gap: 112px; padding: 112px var(--pad) 0; }
.step-row {
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    column-gap: var(--gutter);
    align-items: center;
}
.step-body { grid-column: 1 / span 4; display: flex; flex-direction: column; gap: 16px; }
.step-body-wide { grid-column: 1 / span 5; }
.step-num-mark { background: linear-gradient(180deg, transparent 18%, var(--ai) 18%); padding: 0 6px; }
.step-body .body-lg { color: var(--text-2); }

.step-media {
    grid-column: 6 / span 7;
    padding: 36px;
    background: var(--panel-dark);
    border-radius: var(--radius);
}
.step-media img { display: block; width: 100%; height: auto; border-radius: var(--radius); }

.step-media-narrow { grid-column: 7 / span 6; }

.step-media-phone {
    display: flex;
    justify-content: center;
    height: 560px;
    box-sizing: border-box;
    padding: 56px 40px 0;
    background: var(--panel-dark);
    border-radius: var(--radius);
    overflow: hidden;
}
.step-media-phone img { display: block; width: 280px; height: 100%; object-fit: cover; object-position: top; border-radius: 24px 24px 0 0; }

@media (max-width: 767px) {
    .steps { gap: 56px; padding: 72px var(--pad) 0; }
    .step-row { display: flex; flex-direction: column; gap: 24px; }
    .step-body, .step-body-wide, .step-media, .step-media-narrow { grid-column: auto; }
    .step-media, .step-media-phone { padding: 24px; height: auto; }
    .step-media-phone img { width: 55%; height: auto; aspect-ratio: 9/16; }
}

/* ---- Solution evolution (Explainer) ------------------------------------- */

.evolution-grid {
    grid-column: 1 / span 12;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: var(--gutter);
}
.evolution-item { display: flex; flex-direction: column; gap: 24px; }
.evolution-media { padding: 36px; background: var(--panel-dark); border-radius: var(--radius); }
.evolution-media img { display: block; width: 100%; height: auto; border-radius: var(--radius); }
.evolution-label { display: flex; align-items: center; gap: 12px; font-size: 15px; font-weight: 600; color: var(--muted); }

@media (max-width: 767px) {
    .evolution-grid { grid-template-columns: 1fr; row-gap: 40px; }
}

/* ---- Badges -------------------------------------------------------------- */

.badge {
    padding: 3px 10px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 700;
    font-family: var(--font-body);
}
.badge-lg { padding: 6px 14px; font-size: 15px; }
.badge-ai { background: var(--ai); color: var(--ink); }
.badge-growth { background: var(--growth-dark); color: var(--ink); }

/* ---- How-it-works chips (Explainer) -------------------------------------- */

.chip-row { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; font-size: 16px; font-weight: 600; }
.chip { padding: 10px 16px; border: 1px solid var(--rule-dark); border-radius: 999px; }

.how-band {
    align-items: center;
    margin-top: var(--section-lg);
    padding: 120px var(--pad);
    background: var(--ink);
    color: var(--paper);
}
.how-band-body { grid-column: 1 / span 5; display: flex; flex-direction: column; gap: 24px; }
.how-band-media { grid-column: 7 / span 6; padding: 28px; background: var(--panel-dark); border-radius: var(--radius); }
.how-band-media img { display: block; width: 100%; height: auto; border-radius: var(--radius); }
.how-band .eyebrow { color: var(--muted-dark); }
.how-band-body .body-lg { color: var(--text-2-dark); }

@media (max-width: 767px) {
    .how-band { display: flex; flex-direction: column; gap: 32px; margin-top: 72px; padding: 72px var(--pad); }
    .how-band-body, .how-band-media { grid-column: auto; }
}

/* ---- Experiment T-rows (Search) ------------------------------------------ */

.experiments-band {
    row-gap: 56px;
    margin-top: var(--section-lg);
    padding: 120px var(--pad);
    background: var(--ink);
    color: var(--paper);
}
.experiments-band .section-head { grid-column: 1 / span 5; }
.experiments-band .eyebrow { color: var(--muted-dark); }
.experiments-band .lead-sm { grid-column: 7 / span 6; align-self: end; color: var(--text-2-dark); }
.experiments-list { grid-column: 1 / span 12; display: flex; flex-direction: column; }
.exp-row {
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    column-gap: var(--gutter);
    align-items: baseline;
    padding: 26px 0;
    border-top: 1px solid var(--rule-dark);
}
.experiments-list .exp-row:last-child { border-bottom: 1px solid var(--rule-dark); }
.exp-tag { grid-column: 1 / span 1; font-size: 15px; font-weight: 600; color: var(--ai); }
.exp-title-cell { grid-column: 2 / span 4; }
.exp-desc { grid-column: 7 / span 6; font-size: 17px; line-height: 1.55; color: var(--text-2-dark); }

@media (max-width: 767px) {
    .experiments-band { display: flex; flex-direction: column; margin-top: 72px; padding: 72px var(--pad); row-gap: 24px; }
    .experiments-band .section-head, .experiments-band .lead-sm, .experiments-list { grid-column: auto; }
    .exp-row { display: flex; flex-direction: column; gap: 6px; padding: 20px 0; }
}

/* ---- Plain white media box (Onboarding experiment screenshots) ----------- */

.media-white {
    padding: 24px;
    background: #FFFFFF;
    border-radius: var(--radius);
}
.media-white img { display: block; width: 100%; height: auto; }
.media-white-bordered { border: 1px solid var(--rule); }

/* ---- Growth top-strip (Onboarding / Cancellation) ------------------------ */

.metric-strip {
    align-items: end;
    margin: 0 var(--pad);
    padding: 64px;
    background: var(--ink);
    color: var(--paper);
    border-radius: var(--radius);
    overflow: hidden;
}
.metric-strip-body { grid-column: 1 / span 4; display: flex; flex-direction: column; gap: 16px; }
.metric-strip-media { grid-column: 6 / span 7; padding: 24px; background: #FFFFFF; border-radius: var(--radius); }
.metric-strip-media img { display: block; width: 100%; height: auto; }
.metric-strip .num { color: var(--growth-dark); }
.metric-strip-caption { font-size: 17px; line-height: 1.45; color: var(--text-2-dark); }

.metric-strip-photos { grid-column: 1 / span 5; padding-bottom: 64px; display: flex; flex-direction: column; gap: 16px; }
.metric-strip-images { grid-column: 7 / span 6; display: flex; justify-content: flex-end; gap: 24px; height: 560px; }
.metric-strip-images img { display: block; width: 250px; height: 100%; object-fit: cover; object-position: top; border-radius: 24px 24px 0 0; }
.metric-strip-images img:last-child { margin-top: 56px; }

@media (max-width: 767px) {
    .metric-strip { display: flex; flex-direction: column; gap: 24px; margin: 0 var(--pad); padding: 40px 24px; }
    .metric-strip-body, .metric-strip-media, .metric-strip-photos, .metric-strip-images { grid-column: auto; padding-bottom: 0; }
    .metric-strip-images { height: auto; overflow-x: auto; scroll-snap-type: x mandatory; }
    .metric-strip-images img { width: 45%; flex-shrink: 0; scroll-snap-align: start; margin-top: 0 !important; }
}

.impact-on-paper { grid-column: 1 / span 12; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: var(--gutter); padding: 120px var(--pad) 0; }
.impact-on-paper .stat { border-top: 1.5px solid var(--ink); }
.impact-on-paper .stat-caption { color: var(--text-2); }

@media (max-width: 767px) {
    .impact-on-paper { grid-template-columns: 1fr; row-gap: 32px; padding: 72px var(--pad) 0; }
}

/* ---- Iteration blocks (Onboarding / Cancellation) ------------------------ */

.iteration {
    row-gap: 48px;
    padding: var(--section) var(--pad) 0;
}
.iteration-dark { margin-top: 144px; padding: 112px var(--pad) 120px; background: var(--ink); color: var(--paper); }
.iteration-head {
    grid-column: 1 / span 12;
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    padding-top: 24px;
    border-top: 2px solid var(--ink);
    gap: 20px;
}
.iteration-dark .iteration-head { border-top-color: var(--paper); }
.iteration-head .h2-next { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; }
.iteration-head .eyebrow { color: var(--muted); white-space: nowrap; }
.iteration-dark .iteration-head .eyebrow { color: var(--muted-dark); }

.callout {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 24px;
    border-radius: var(--radius);
}
.callout-fill { background: var(--callout); }
.iteration-dark .callout-fill { background: var(--callout-dark); }
.callout-border { border: 1.5px solid var(--ink); }
.iteration-dark .callout-border { border-color: var(--paper); }
.callout-label { font-size: 14px; font-weight: 700; }
.callout-label-muted { color: var(--muted); }
.iteration-dark .callout-label-muted { color: var(--muted-dark); }
.callout-label-growth { color: var(--growth); }
.iteration-dark .callout-label-growth { color: var(--growth-dark); }
.callout-body { font-size: 18px; line-height: 1.5; }

.change-list { display: flex; flex-direction: column; }
.change-list-label { font-size: 14px; font-weight: 700; color: var(--muted); padding-bottom: 12px; }
.iteration-dark .change-list-label { color: var(--muted-dark); }
.change-row {
    display: grid;
    grid-template-columns: 220px minmax(0, 1fr);
    column-gap: 20px;
    padding: 14px 0;
    border-top: 1px solid var(--rule);
    font-size: 16px;
    line-height: 1.5;
}
.change-row.stacked { display: flex; flex-direction: column; gap: 6px; border-top-color: var(--rule-dark); }
.change-list a.change-row:last-child,
.change-list .change-row:last-child { border-bottom: 1px solid var(--rule); }
.iteration-dark .change-row { border-top-color: var(--rule-dark); }
.iteration-dark .change-row:last-child { border-bottom-color: var(--rule-dark); }
.change-row .term { font-weight: 700; }
.change-row .def { color: var(--text-2); }
.iteration-dark .change-row .def { color: var(--text-2-dark); }

.finding-grid {
    grid-column: 1 / span 12;
    display: grid;
    grid-template-columns: repeat(var(--finding-cols, 3), minmax(0, 1fr));
    column-gap: var(--gutter);
}
.finding {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding-top: 18px;
    border-top: 1px solid var(--rule);
}
.iteration-dark .finding { border-top-color: var(--rule-dark); }
.finding .body-md { color: var(--text-2); }
.iteration-dark .finding .body-md { color: var(--text-2-dark); }
.finding-highlight { padding: 18px 20px 20px; background: var(--ink); color: var(--paper); border-radius: var(--radius); border-top: 0; }
.finding-highlight .finding-title { color: var(--growth-dark); }
.finding-highlight .body-md { color: var(--text-2-dark); }

@media (max-width: 767px) {
    .iteration, .iteration-dark { display: flex; flex-direction: column; gap: 32px; padding: 72px var(--pad) 0; }
    .iteration-dark { margin-top: 56px; padding: 56px var(--pad) 72px; }
    .iteration-head, .finding-grid { grid-column: auto; }
    .iteration-head { flex-direction: column; align-items: flex-start; gap: 12px; }
    .finding-grid { grid-template-columns: 1fr; row-gap: 24px; }
    .change-row { grid-template-columns: 1fr; row-gap: 4px; }
}

/* ---- Key learnings ------------------------------------------------------- */

.learnings { display: flex; flex-direction: column; padding: var(--section-lg) var(--pad) var(--section-lg); }
.learnings-head { display: flex; flex-direction: column; gap: 20px; padding-bottom: 56px; }
.learning-row {
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    column-gap: var(--gutter);
    align-items: baseline;
    padding: 36px 0;
    border-top: 1px solid var(--rule);
}
.learning-row:first-of-type { border-top: 1.5px solid var(--ink); }
.learning-row:last-of-type { border-bottom: 1.5px solid var(--ink); }
.learning-idx { grid-column: 1 / span 1; font-size: 15px; font-weight: 600; color: var(--muted); }
.learning-title-cell { grid-column: 2 / span 5; }
.learning-body { grid-column: 8 / span 5; color: var(--text-2); }

@media (max-width: 767px) {
    .learnings { padding: 104px var(--pad) 104px; }
    .learnings-head { padding-bottom: 32px; }
    .learning-row { display: flex; flex-direction: column; gap: 10px; padding: 28px 0; }
}

/* ---- Next-case footer ----------------------------------------------------- */

.next-footer {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 96px;
    padding: 128px var(--pad) 40px;
    background: var(--ink);
    color: var(--paper);
}
.next-link { display: flex; flex-direction: column; gap: 24px; color: var(--paper); }
.next-link:hover { color: var(--growth-dark); }
.next-label { font-size: 15px; font-weight: 600; color: var(--muted-dark); }
.next-title-row { display: flex; justify-content: space-between; align-items: flex-end; gap: 40px; }
.next-title-row svg { flex-shrink: 0; margin-bottom: 8px; width: clamp(48px, 6vw, 96px); height: clamp(48px, 6vw, 96px); }
.next-footer-meta { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; font-size: 14px; font-weight: 500; color: var(--muted-dark); }

@media (max-width: 767px) {
    .next-footer { gap: 56px; padding: 72px var(--pad) 32px; }
    .next-title-row { align-items: center; }
}