/* ==========================================================================
   RSOL Technology — Portfolio (listing + individual case studies)
   Full case studies are a "dossier" — a labeled-field sequence distinct
   from both the homepage's shorter transformation blocks and the Services
   page's Problem/Opportunity/Solution/Outcome list, since this content has
   nine real fields per project rather than four.
   ========================================================================== */

/* ---- Listing page (/portfolio/) — summary cards, not the full dossier --- */
.portfolio-hero {
  position: relative;
  min-height: clamp(520px, 78svh, 660px);
  display: grid;
  align-items: center;
  overflow: visible;
  padding: clamp(2.5rem, 4vw, 4rem) 0 clamp(4rem, 5.5vw, 4.75rem);
  border-bottom: 1px solid var(--ink);
  background-color: var(--cyan);
  background-image:
    linear-gradient(rgba(10, 13, 18, .035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(10, 13, 18, .035) 1px, transparent 1px);
  background-size: 88px 88px;
  isolation: isolate;
}
.portfolio-hero::before {
  display: none;
}
.portfolio-hero .eyebrow { color: var(--utility-on-cyan); }
.portfolio-hero__layout {
  width: 100%;
}
.portfolio-hero__copy {
  min-width: 0;
  width: min(100%, 66rem);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  grid-template-areas:
    "eyebrow"
    "title"
    "support";
  row-gap: var(--space-3);
  align-items: start;
}
.portfolio-hero__copy .eyebrow {
  grid-area: eyebrow;
  margin: 0;
}
.portfolio-hero__copy h1 {
  grid-area: title;
  min-width: 0;
  width: 100%;
  max-width: 17ch;
  margin: 0;
  font-size: clamp(4.2rem, 6.5vw, 6rem);
  line-height: .88;
  letter-spacing: -.04em;
  text-wrap: balance;
}
.portfolio-hero__footer {
  grid-area: support;
  width: min(100%, 42rem);
  margin: clamp(var(--space-3), 2vw, var(--space-6)) 0 0;
  padding-top: var(--space-3);
  border-top: 1px solid rgba(10,13,18,.48);
}
.portfolio-hero__copy .lead {
  max-width: 46ch;
  margin: 0;
  color: rgba(10, 13, 18, .78);
}
.portfolio-hero__proof {
  display: grid;
  gap: var(--space-1);
  margin: var(--space-4) 0 0;
  padding: var(--space-2) 0 0;
  border-top: 1px solid rgba(10,13,18,.2);
  list-style: none;
  font: 550 .875rem/1.4 var(--mono);
  letter-spacing: .04em;
  text-transform: uppercase;
}
.portfolio-hero__proof li { display: flex; align-items: baseline; gap: .45rem; }
.portfolio-hero__proof strong { font: 650 1.4rem/1 var(--display); letter-spacing: -.04em; }
.portfolio-cases { scroll-margin-top: var(--header-height, 79px); }

/* Proof key — makes the engagement type and ownership boundary explicit. */
.portfolio-proof-key { padding: clamp(2rem, 4vw, 3.5rem) 0; border-bottom: 1px solid var(--ink); background: var(--paper-2); }
.portfolio-proof-key__layout { display: grid; grid-template-columns: minmax(210px, .55fr) minmax(0, 1.45fr); gap: clamp(2rem, 7vw, 7rem); align-items: start; }
.portfolio-proof-key__intro h2 { max-width: 10ch; margin: .7rem 0 0; font-size: clamp(1.8rem, 3vw, 3rem); }
.portfolio-proof-key__items { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border-top: 1px solid var(--ink); }
.portfolio-proof-key__items article { display: grid; grid-template-columns: 42px minmax(0, 1fr); gap: 1rem; padding: 1.35rem 1.35rem 1.35rem 0; border-bottom: 1px solid var(--ink); }
.portfolio-proof-key__items article + article { padding-left: 1.35rem; border-left: 1px solid var(--ink); }
.portfolio-proof-key__items span { color: var(--cyan-dark); font: 650 .72rem/1.3 var(--mono); }
.portfolio-proof-key__items strong { font: 650 1.15rem/1.2 var(--display); }
.portfolio-proof-key__items p { margin: .55rem 0 0; color: var(--muted); font-size: .92rem; }
@media (max-width: 820px) {
  .portfolio-proof-key__layout,
  .portfolio-proof-key__items { grid-template-columns: 1fr; }
  .portfolio-proof-key__items article + article { padding-left: 0; border-left: 0; }
}

@media (max-width: 1100px) {
  .portfolio-hero__copy {
    width: 100%;
  }
  .portfolio-hero__copy h1 {
    max-width: 17ch;
    font-size: clamp(4rem, 9vw, 6rem);
  }
  .portfolio-hero__footer {
    width: min(100%, 42rem);
  }
  .portfolio-hero__proof {
    margin-top: var(--space-4);
    padding: var(--space-2) 0 0;
    border-top: 1px solid rgba(10,13,18,.2);
    border-left: 0;
  }
}
@media (max-width: 680px) {
  .portfolio-hero { padding-top: 2.5rem; padding-bottom: 5rem; }
  .portfolio-hero__copy { row-gap: var(--space-3); }
  .portfolio-hero__copy h1 {
    max-width: 100%;
    font-size: clamp(2rem, 10.75vw, 3.15rem);
    line-height: .92;
  }
  .portfolio-hero__footer {
    display: block;
    padding-top: var(--space-3);
  }
  .portfolio-hero__proof {
    gap: .75rem;
    margin-top: var(--space-3);
    padding: var(--space-2) 0 0;
    border-top: 1px solid rgba(10,13,18,.2);
    border-left: 0;
  }
}

/* ---- Interactive client website preview -------------------------------- */
.case-live-preview__heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: 2.5rem;
}
.case-live-preview__heading h2 { margin-bottom: 0; }
.website-preview {
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 0;
  background: var(--ink-2);
  box-shadow: 18px 20px 0 var(--cyan), 0 34px 64px rgba(10, 13, 18, .14);
}
.website-preview__bar {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: var(--space-3);
  min-height: 58px;
  padding: 10px 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--on-ink-muted);
  font-family: var(--mono);
  font-size: .8125rem;
}
.website-preview__controls { display: flex; gap: 7px; }
.website-preview__controls i {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.25);
}
.website-preview__controls i:first-child,
.website-preview__controls i:nth-child(2) { background: var(--on-ink-muted); }
.website-preview__controls i:last-child { background: var(--cyan); }
.website-preview__address {
  overflow: hidden;
  max-width: 560px;
  padding: 8px 14px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 2px;
  background: rgba(255, 255, 255, 0.055);
  text-align: center;
  text-overflow: ellipsis;
  white-space: nowrap;
  justify-self: center;
  width: 100%;
}
.website-preview__status {
  color: var(--cyan);
  text-transform: uppercase;
  letter-spacing: .08em;
}
.website-preview__viewport {
  position: relative;
  aspect-ratio: 16 / 9;
  min-height: 520px;
  background: #fff;
}
.website-preview__viewport iframe {
  display: block;
  width: 100%;
  height: 100%;
  border: 0;
  background: #fff;
}
.case-live-preview__note {
  max-width: 720px;
  margin: var(--space-3) 0 0;
  color: var(--on-ink-muted);
  font-size: .8125rem;
}
@media (max-width: 700px) {
  .case-live-preview__heading { align-items: start; flex-direction: column; }
  .website-preview__bar { grid-template-columns: auto minmax(0, 1fr); }
  .website-preview__status { display: none; }
  .website-preview__viewport { aspect-ratio: 3 / 4; min-height: 520px; }
}

/* ---- Individual case study — dossier of labeled fields ---- */
.case-header { margin-bottom: var(--space-2); }
.case-header__tag {
  font-family: var(--mono);
  font-size: .8125rem;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--utility-on-cyan);
}

.case-study {
  margin-top: var(--space-4);
}
.case-study__field {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: var(--space-6);
  padding-block: var(--space-6);
  border-top: 1px solid var(--rule);
}
.case-study__field:first-child { border-top: none; }
@media (max-width: 780px) { .case-study__field { grid-template-columns: 1fr; gap: var(--space-2); } }

.case-study__label {
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--muted);
}

/* Results and Lessons Learned get a quiet visual emphasis — the two fields
   a visitor most needs to walk away remembering. */
.case-study__field--results,
.case-study__field--lessons { background: var(--paper-2); margin-inline: calc(var(--gutter) * -1); padding-inline: var(--gutter); }
.case-study__field--results .case-study__label,
.case-study__field--lessons .case-study__label { color: var(--cyan-dark); }

.case-nav {
  display: flex;
  justify-content: space-between;
  gap: var(--space-3);
  margin-top: var(--space-8);
  padding-top: var(--space-4);
  border-top: 1px solid var(--rule);
  flex-wrap: wrap;
}