/* =============================================================================
   project.css — case-study layout
   Shared shell for the project detail pages (nav, hero, meta, imagery, content
   blocks, results, quote, CTA and project-to-project navigation). Loaded after
   base.css; each project page adds only its own bespoke sections on top.
   ========================================================================== */

/* Project pages read at a larger body size in a narrower measure. */
:root {
  --maxw: 1000px;
}

body {
  font-size: 18px;
  line-height: 1.65;
}

/* ----------------------------------------------------------------------------
   Sticky navigation + back link
   ------------------------------------------------------------------------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, .8);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}

.nav .back .arrow {
  display: inline-block;
  transition: transform .25s var(--ease);
}

.nav .back:hover .arrow {
  transform: translateX(-4px);
}

/* Secondary buttons reveal a gradient border on hover. */
.btn:not(.btn-primary):hover {
  border-color: transparent;
  transform: translateY(-2px);
  background-image: linear-gradient(#fff, #fff), var(--grad);
  background-origin: border-box;
  background-clip: padding-box, border-box;
}

/* ----------------------------------------------------------------------------
   Hero
   ------------------------------------------------------------------------- */
.phero {
  padding: 80px 28px 40px;
}

.phero h1 {
  max-width: 850px;
  font-size: clamp(2.3rem, 5.2vw, 3.8rem);
}

.phero .lead {
  max-width: 640px;
  margin-top: 24px;
  font-size: clamp(1.1rem, 2vw, 1.3rem);
  color: var(--ink-soft);
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 22px;
}

.chip {
  padding: 6px 12px;
  border: 1px solid var(--line);
  border-radius: 100px;
  background: var(--bg-soft);
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-soft);
}

/* ----------------------------------------------------------------------------
   Meta bar
   ------------------------------------------------------------------------- */
.meta {
  display: grid;
  grid-template-columns: repeat(4, auto);
  justify-content: space-between;
  gap: 24px;
  margin: 48px 0;
  padding: 34px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.meta .k {
  margin-bottom: 8px;
  font-family: var(--mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--muted);
}

.meta .v {
  font-weight: 600;
}

/* ----------------------------------------------------------------------------
   Imagery — covers, half shots and rows
   ------------------------------------------------------------------------- */
.shot {
  display: grid;
  place-items: center;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 20px;
  background:
    radial-gradient(120% 120% at 75% 15%, rgba(178, 63, 203, .16), transparent 60%),
    radial-gradient(120% 120% at 15% 90%, rgba(81, 69, 229, .16), transparent 55%),
    var(--bg-soft);
}

.shot img,
.shot video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.shot .ph {
  padding: 24px;
  font-family: var(--mono);
  font-size: 13px;
  color: var(--muted);
  text-align: center;
}

.cover {
  aspect-ratio: 16 / 9;
  margin-bottom: 30px;
}

.half {
  aspect-ratio: 4 / 3;
}

.imgrow {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin: 30px 0;
}

/* ----------------------------------------------------------------------------
   Content blocks
   ------------------------------------------------------------------------- */
.block {
  padding: 46px 0;
  border-top: 1px solid var(--line);
}

.block:first-of-type {
  border-top: none;
}

.block h2 {
  margin-bottom: 18px;
  font-size: clamp(1.6rem, 3.4vw, 2.3rem);
}

.block p {
  max-width: 720px;
  margin-bottom: 16px;
  color: var(--ink-soft);
}

.block ul {
  max-width: 720px;
  margin: 0 0 16px 20px;
  color: var(--ink-soft);
}

.block li {
  margin-bottom: 8px;
}

/* Decision grid — paired cards describing key design choices. */
.decisions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin-top: 30px;
}

.dcard {
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--bg-soft);
  transition: transform .35s var(--ease), box-shadow .35s var(--ease),
    border-color .35s var(--ease);
}

.dcard:hover {
  transform: translateY(-4px);
  box-shadow: 0 22px 44px -28px rgba(20, 10, 50, .32);
  border-color: transparent;
}

.dcard .dt {
  display: block;
  margin-bottom: 10px;
  font-family: var(--display);
  font-weight: 600;
  font-size: 1.18rem;
  letter-spacing: -.01em;
}

.dcard p {
  max-width: none;
  margin: 0;
  font-size: 1rem;
  color: var(--ink-soft);
}

/* Reason grid — bulleted list rendered as two gradient-marked columns. */
.block ul.reasons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px 30px;
  max-width: none;
  margin: 30px 0 0;
  list-style: none;
}

.block ul.reasons li {
  position: relative;
  margin: 0;
  padding-left: 22px;
  color: var(--ink-soft);
}

.block ul.reasons li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .55em;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--grad);
}

/* Small mono label used to introduce a sub-section. */
.mini {
  display: block;
  margin: 32px 0 16px;
  font-family: var(--mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--muted);
}

/* ----------------------------------------------------------------------------
   Results
   ------------------------------------------------------------------------- */
.results {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 10px;
}

.rcard {
  padding: 28px 24px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--bg-soft);
}

.rcard .m {
  font-family: var(--display);
  font-weight: 700;
  font-size: 2.6rem;
  line-height: 1;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.rcard .l {
  margin-top: 10px;
  font-size: .98rem;
  color: var(--muted);
}

/* ----------------------------------------------------------------------------
   Pull quote
   ------------------------------------------------------------------------- */
.pquote {
  padding: 56px 0;
  border-top: 1px solid var(--line);
  text-align: center;
}

.pquote blockquote {
  max-width: 780px;
  margin: 0 auto;
  font-family: var(--display);
  font-weight: 500;
  font-size: clamp(1.4rem, 3.2vw, 2.1rem);
  line-height: 1.28;
  letter-spacing: -.02em;
}

.pquote .who {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-top: 22px;
  font-family: var(--mono);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--muted);
}

/* ----------------------------------------------------------------------------
   Closing CTA
   ------------------------------------------------------------------------- */
.pcta {
  position: relative;
  margin: 40px 0 90px;
  padding: 70px 40px;
  overflow: hidden;
  border-radius: 28px;
  background: var(--ink);
  color: #fff;
  text-align: center;
}

.pcta .glow {
  position: absolute;
  bottom: -320px;
  left: 50%;
  width: 560px;
  height: 560px;
  border-radius: 50%;
  background: var(--grad);
  filter: blur(90px);
  opacity: .5;
  transform: translateX(-50%);
}

.pcta .inner {
  position: relative;
  z-index: 1;
}

.pcta h2 {
  font-size: clamp(1.9rem, 4.4vw, 2.8rem);
}

.pcta p {
  max-width: 460px;
  margin: 16px auto 30px;
  color: rgba(255, 255, 255, .7);
}

.pcta .btn-primary {
  box-shadow: 0 8px 30px -8px rgba(255, 255, 255, .25);
}

.pcta .more {
  display: inline-block;
  margin-top: 22px;
  padding-bottom: 2px;
  border-bottom: 1px solid rgba(255, 255, 255, .3);
  font-size: .95rem;
  color: rgba(255, 255, 255, .7);
}

.pcta .more:hover {
  color: #fff;
}

/* ----------------------------------------------------------------------------
   Project-to-project navigation
   ------------------------------------------------------------------------- */
.projnav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  padding-top: 40px;
  border-top: 1px solid var(--line);
}

.pn {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 26px 28px;
  border: 1px solid var(--line);
  border-radius: 18px;
  transition: background .35s var(--ease), border-color .35s var(--ease);
}

.pn.next {
  align-items: flex-end;
  text-align: right;
}

.pn:hover {
  border-color: transparent;
  background-image: linear-gradient(#fff, #fff), var(--grad);
  background-origin: border-box;
  background-clip: padding-box, border-box;
}

.pn-k {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--muted);
}

.pn-t {
  font-family: var(--display);
  font-weight: 600;
  font-size: clamp(1.2rem, 2.6vw, 1.5rem);
  letter-spacing: -.01em;
}

.pn:hover .pn-t {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.pn-arrow {
  display: inline-block;
  transition: transform .25s var(--ease);
}

.pn.prev:hover .pn-arrow {
  transform: translateX(-4px);
}

.pn.next:hover .pn-arrow {
  transform: translateX(4px);
}

/* ----------------------------------------------------------------------------
   Responsive
   ------------------------------------------------------------------------- */
@media (max-width: 820px) {
  .meta {
    grid-template-columns: 1fr 1fr;
  }

  .results,
  .imgrow {
    grid-template-columns: 1fr;
  }

  .decisions,
  .block ul.reasons {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 620px) {
  .projnav {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .pn.next {
    align-items: flex-start;
    text-align: left;
  }
}