/* =========================================================================
   References page: page-specific styles only.
   Reads the semantic tokens from style.css; no new colours.
   ========================================================================= */

/* Hero facts row ---------------------------------------------------------- */
.ref-hero__facts {
  display: flex; flex-wrap: wrap; gap: .75rem 2.25rem; margin: 2.5rem 0 0; padding: 1.5rem 0 0; list-style: none;
  border-top: 1px solid var(--line);
}
.ref-hero__facts li { display: grid; gap: .25rem; }
.ref-hero__facts strong { font-family: var(--f-display); font-weight: 800; font-size: clamp(1.5rem, 1.1rem + 1.2vw, 2.1rem); line-height: 1; letter-spacing: -0.04em; }
.ref-hero__facts span { font-family: var(--f-mono); font-size: .66rem; letter-spacing: .14em; text-transform: uppercase; color: var(--c-text-muted); }

/* Filter chips: one scrollable row on small screens ----------------------- */
.ref-chips { margin-bottom: clamp(1.75rem, 3vw, 2.5rem); }
@media (max-width: 719px) {
  .ref-chips {
    flex-wrap: nowrap; overflow-x: auto; scrollbar-width: none; overscroll-behavior-x: contain;
    margin-inline: calc(-1 * var(--gutter)); padding: .25rem var(--gutter) .75rem; scroll-padding-inline: var(--gutter);
    -webkit-mask-image: linear-gradient(90deg, transparent, #000 var(--gutter), #000 calc(100% - 2.5rem), transparent);
            mask-image: linear-gradient(90deg, transparent, #000 var(--gutter), #000 calc(100% - 2.5rem), transparent);
  }
  .ref-chips::-webkit-scrollbar { display: none; }
  .ref-chips .chip { flex: none; white-space: nowrap; }
}

/* Project grid tiles ------------------------------------------------------- */
.ref-grid { gap: clamp(1.25rem, 2.2vw, 2rem) clamp(1rem, 1.8vw, 1.5rem); grid-template-columns: repeat(auto-fill, minmax(min(100%, 260px), 1fr)); }
@media (min-width: 1200px) { .ref-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
.ref-tile { display: grid; gap: .9rem; align-content: start; min-width: 0; }
.ref-tile__media {
  position: relative; display: block; aspect-ratio: 4 / 3; border-radius: var(--r-card); overflow: hidden; isolation: isolate;
  background: var(--c-bg-alt); box-shadow: var(--shadow-depth);
}
.ref-tile__media img { width: 100%; height: 100%; object-fit: cover; filter: saturate(.92); transition: scale 1.1s var(--ease-out), filter .6s; }
.ref-tile__media::after {
  content: ""; position: absolute; inset: 0; z-index: 1; pointer-events: none;
  background: linear-gradient(180deg, rgba(10,10,12,.28) 0%, rgba(10,10,12,0) 30%, rgba(10,10,12,0) 55%, rgba(10,10,12,.55) 100%);
}
.ref-tile__media:hover img, .ref-tile__media:focus-visible img { scale: 1.06; filter: saturate(1.05); }
.ref-tile__tag {
  position: absolute; left: .85rem; top: .85rem; z-index: 2; padding: .3rem .6rem; border-radius: 999px;
  font-family: var(--f-mono); font-size: .62rem; letter-spacing: .12em; text-transform: uppercase; color: #fff;
  background: rgba(10,10,12,.55); border: 1px solid rgba(255,255,255,.22); -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
}
.ref-tile__hud {
  position: absolute; left: .85rem; right: .85rem; bottom: .85rem; z-index: 2; display: flex; align-items: center; justify-content: space-between;
  font-family: var(--f-mono); font-size: .7rem; letter-spacing: .14em; color: #fff; text-shadow: 0 1px 8px rgba(0,0,0,.6);
}
.ref-tile__zoom {
  display: grid; place-items: center; width: 44px; height: 44px; border-radius: 50%; color: var(--c-ink);
  background: rgba(255,255,255,.86); border: 1px solid rgba(255,255,255,.9); box-shadow: 0 8px 20px -8px rgba(10,10,12,.45);
  text-shadow: none; transition: background-color var(--t-med), color var(--t-med), transform var(--t-med) var(--ease-out);
}
.ref-tile__zoom .icon { width: 18px; height: 18px; }
.ref-tile__media:hover .ref-tile__zoom, .ref-tile__media:focus-visible .ref-tile__zoom { background: var(--c-signal-btn); border-color: var(--c-signal-btn); color: #fff; transform: scale(1.08); }
.ref-tile__meta { display: grid; gap: .35rem; padding-inline: .15rem; }
.ref-tile__svc { margin: 0; font-family: var(--f-mono); font-size: .64rem; letter-spacing: .12em; text-transform: uppercase; color: var(--c-text-muted); line-height: 1.5; }
.ref-tile__title { font-size: 1.05rem; line-height: 1.2; letter-spacing: -0.01em; }

/* Case studies ------------------------------------------------------------ */
.cases { display: grid; gap: clamp(1.5rem, 3vw, 2.5rem); }
.case { display: grid; padding: 0; overflow: hidden; }
.case__media { position: relative; min-height: 240px; aspect-ratio: 16 / 10; background: var(--c-bg-alt); }
.case__media .viewfinder { position: absolute; inset: 0; }
.case__media img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: scale 1.2s var(--ease-out); }
.case__media::after { content: ""; position: absolute; inset: 0; z-index: 1; pointer-events: none; background: linear-gradient(180deg, rgba(10,10,12,.35), rgba(10,10,12,0) 28%, rgba(10,10,12,0) 70%, rgba(10,10,12,.4)); }
.case:hover .case__media img { scale: 1.04; }
.case__body { display: grid; gap: 1.1rem; align-content: start; padding: clamp(1.5rem, 3.5vw, 3rem); }
.case__tags { gap: .5rem; }
a.case__svc { min-height: 32px; transition: border-color var(--t-med), color var(--t-med); }
a.case__svc:hover, a.case__svc:focus-visible { border-color: var(--c-accent); color: var(--c-accent); }
.case__title { font-size: clamp(1.4rem, 1.05rem + 1.3vw, 2.2rem); line-height: 1.08; letter-spacing: -0.025em; }
.case__intro { color: var(--c-text-muted); max-width: 58ch; margin: 0; }
.case__steps { margin: .5rem 0 0; display: grid; }
.case__step { display: grid; gap: .4rem; padding-block: 1.1rem; border-top: 1px solid var(--line); }
.case__step dt { display: flex; align-items: center; gap: .7rem; font-family: var(--f-mono); font-size: .7rem; letter-spacing: .14em; text-transform: uppercase; color: var(--c-text); }
.case__k { display: inline-grid; place-items: center; min-width: 30px; height: 22px; padding-inline: .35rem; font-size: .62rem; color: var(--c-text-muted); border: 1px solid var(--line-strong); }
.case__step dd { margin: 0; color: var(--c-text-soft); line-height: 1.65; }
.case__step--result dt { color: var(--c-accent); }
.case__step--result .case__k { color: #fff; background: var(--c-signal-btn); border-color: var(--c-signal-btn); }
.case__step--result dd { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: .25rem 1.25rem; }
.case__pending { color: var(--c-text-muted); font-style: italic; }
.case__step--result .link { min-height: 44px; }
@media (min-width: 640px) {
  .case__step { grid-template-columns: 9.5rem minmax(0, 1fr); gap: 1.25rem; align-items: baseline; }
}
@media (min-width: 1000px) {
  .case { grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); }
  .case--rev { grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); }
  .case--rev .case__media { order: 2; }
  .case__media { aspect-ratio: auto; min-height: 100%; }
}

/* Worldwide impact (dark band) -------------------------------------------- */
.ref-impact .section-head { margin-bottom: clamp(2.5rem, 5vw, 4rem); }
.ref-impact .stat__desc { color: var(--c-text-muted); }

/* Testimonials slot -------------------------------------------------------- */
.voices-slot {
  display: grid; gap: 1.5rem; align-items: center; padding: clamp(1.5rem, 4vw, 3rem); border-radius: var(--r-card);
  border: 1.5px dashed var(--line-input); background: var(--c-surface); box-shadow: var(--tile-shadow);
}
.voices-slot__mark { font-family: var(--f-display); font-weight: 800; font-size: 5.5rem; line-height: .7; height: .5em; color: var(--c-accent); }
.voices-slot__copy { display: grid; gap: .6rem; max-width: 62ch; }
.voices-slot__copy p { margin: 0; color: var(--c-text-muted); }
.voices-slot__copy .voices-slot__title { font-family: var(--f-display); font-weight: 600; font-size: var(--fs-h3); line-height: 1.2; letter-spacing: -0.015em; color: var(--c-text); }
@media (min-width: 900px) {
  .voices-slot { grid-template-columns: auto minmax(0, 1fr) auto; gap: 2.5rem; }
}

@media (prefers-reduced-motion: reduce) {
  .ref-tile__media img, .case__media img { transition: none; }
}