/* ==========================================================================
   Case study pages — /work/<project>/
   Loads after general.css. Everything is scoped to body.case-study so the
   homepage is untouched. Colors and type come from general.css:
   Choplin-Medium headings, Noto Sans body, #438436 green, #288073 teal.
   ========================================================================== */

.case-study {
  --cs-ink: #3d3d3d;
  --cs-head: #505050;
  --cs-muted: #707070;
  --cs-bg: #fcfcfc;
  --cs-panel: #f2f2f2;
  --cs-wash: #f3faf2;
  --cs-rule: #e3e3e3;
  --cs-green: #438436;
  --cs-teal: #288073;
  --cs-red: #C5493F;
  --cs-read: 68rem;   /* reading column */
  --cs-wide: 104rem;  /* screens break out to this */
  padding-top: 6rem;  /* room for the top bar */
}

/* Top bar: on case study pages the nav is always a bar, never the floating side menu,
   so wide screenshots never run under it. */
.case-study #nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 6rem;
  background: var(--cs-bg);
  box-shadow: 0 0.1rem 0.4rem 0 #999;
  display: flex !important;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.6rem;
  box-sizing: border-box;
  z-index: 99;
}
.case-study #nav #logo img { height: 4rem; width: auto; margin: 0; float: none; }
/* Three short links fit at any width, so the homepage's phone dropdown is switched off here. */
.case-study #nav ul#menu {
  display: flex !important; gap: 0.4rem; margin: 0 !important; padding: 0; float: none;
  position: static !important; opacity: 1 !important; filter: none !important;
  background: none !important; box-shadow: none !important; width: auto !important;
}
.case-study #nav #menu li { margin: 0 !important; float: none !important; width: auto !important; }
.case-study #nav #menu li a { min-height: 0 !important; border-radius: 0.4rem !important; padding: 0.8rem 1.2rem !important; }
.case-study #navButton { display: none !important; }

/* Layout */
.cs-wrap { max-width: var(--cs-wide); margin: 0 auto; padding: 0 2rem; }
.cs-read { max-width: var(--cs-read); }
.case-study main p { font-size: 1.7rem; line-height: 2.8rem; margin: 0; }
.case-study h1, .case-study h2, .case-study h3 { text-wrap: balance; }

.cs-eyebrow {
  font-family: 'Noto Sans', sans-serif;
  font-size: 1.2rem !important;
  line-height: 1.6rem !important;
  font-weight: bold;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cs-teal);
}

/* Hero */
.cs-hero { padding: 6.4rem 0 4rem; display: grid; gap: 2.4rem; }
.cs-hero h1 { font-size: clamp(3.6rem, 6vw, 6.4rem); line-height: 1.05; margin: 0; color: var(--cs-head); max-width: 16ch; }
.cs-hero .cs-lede { font-size: 2rem; line-height: 3.2rem; color: var(--cs-muted); max-width: 34em; }
.cs-meta { display: grid; grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr)); gap: 2.4rem; margin: 0; padding-top: 2.4rem; border-top: 0.1rem solid var(--cs-rule); }
.cs-meta dt { font-size: 1.2rem; font-weight: bold; letter-spacing: 0.12em; text-transform: uppercase; color: var(--cs-muted); }
.cs-meta dd { margin: 0.4rem 0 0; font-size: 1.5rem; line-height: 2.2rem; }

/* Figures */
.cs-figure { margin: 0; display: grid; gap: 1.2rem; }
.cs-frame { background: var(--cs-panel); border-radius: 0.4rem; padding: clamp(1.2rem, 3vw, 3.2rem); }
.cs-frame img { display: block; width: 100%; height: auto; border-radius: 0.2rem; box-shadow: 0 0.2rem 0.8rem rgba(0,0,0,0.08); }
.cs-figure figcaption { font-size: 1.4rem; line-height: 2rem; color: var(--cs-muted); max-width: var(--cs-read); }
.cs-pair { display: grid; grid-template-columns: repeat(auto-fit, minmax(30rem, 1fr)); gap: 3.2rem; align-items: start; }
.cs-pair > * { min-width: 0; }
.cs-placeholder { border: 0.2rem dashed #c9c9c9; border-radius: 0.4rem; padding: 4.8rem 2.4rem; text-align: center; color: var(--cs-muted); background: var(--cs-panel); }

/* Result band */
.cs-result { background: var(--cs-wash); border-radius: 0.4rem; padding: clamp(2.8rem, 5vw, 5.6rem); display: grid; gap: 2rem; margin: 5.6rem 0; }
.cs-nums { display: flex; flex-wrap: wrap; align-items: center; gap: 1.2rem 3.2rem; font-family: 'Choplin-Medium', 'Noto Sans', sans-serif; line-height: 1; font-variant-numeric: tabular-nums; }
.cs-nums .cs-before { font-size: clamp(4.8rem, 9vw, 10.4rem); color: var(--cs-muted); }
.cs-nums .cs-after { font-size: clamp(4.8rem, 9vw, 10.4rem); color: var(--cs-green); }
.cs-nums .cs-unit { display: block; margin-top: 0.8rem; font-family: 'Noto Sans', sans-serif; font-size: 1.4rem; color: var(--cs-ink); }
.cs-nums .cs-arrow { font-size: 4rem; color: var(--cs-teal); }
.cs-result .cs-caption { font-family: 'Vollkorn', serif; font-style: italic; font-size: 2.2rem !important; line-height: 3rem !important; max-width: 30em; }

/* Chapters */
.cs-chapter { display: grid; gap: 2.8rem; padding: 5.6rem 0; border-top: 0.1rem solid var(--cs-rule); }
.cs-chapter > header { display: grid; gap: 0.8rem; }
.cs-chapter h2 { font-size: clamp(2.8rem, 4vw, 4rem); line-height: 1.1; margin: 0; color: var(--cs-head); }
.cs-prose { display: grid; gap: 1.8rem; }
.cs-prose strong { color: var(--cs-head); }

/* Quote: general.css blockquote, a bit bigger */
.case-study blockquote.cs-quote { margin: 0; padding-left: 2.4rem; text-indent: 0; border-left: 0.4rem solid var(--cs-green); }
.case-study blockquote.cs-quote p { font-size: clamp(2.4rem, 3.5vw, 3.2rem); line-height: 1.3; text-align: left; }
.case-study blockquote.cs-quote p.author { font-size: 1.3rem; line-height: 2rem; text-indent: 0; margin: 1.2rem 0 0; }

/* Card rows (goals, personas) */
.cs-cols { display: grid; grid-template-columns: repeat(auto-fit, minmax(22rem, 1fr)); gap: 3.2rem; }
.cs-cols > div { display: grid; gap: 0.8rem; align-content: start; min-width: 0; }
.cs-cols h3 { font-size: 2.2rem; line-height: 1.2; margin: 0; color: var(--cs-head); }
.cs-cols p { color: var(--cs-muted); }
.case-study .cs-cols p.cs-said { font-family: 'Vollkorn', serif; font-style: italic; font-size: 2rem; color: var(--cs-ink); }
.cs-tag { justify-self: start; font-size: 1.1rem; font-weight: bold; letter-spacing: 0.08em; text-transform: uppercase; background: var(--cs-green); color: var(--cs-bg); padding: 0.3rem 1rem; border-radius: 99rem; }

/* Timed walkthrough */
.cs-timeline { list-style: none; margin: 0; padding: 0; }
.cs-timeline li { display: grid; grid-template-columns: 9.6rem 1fr; gap: 2rem; padding: 1.8rem 0; border-top: 0.1rem solid var(--cs-rule); }
.cs-timeline li:last-child { border-bottom: 0.1rem solid var(--cs-rule); }
.cs-timeline .cs-t { font-family: 'Choplin-Medium', 'Noto Sans', sans-serif; font-size: 2.4rem; line-height: 1.2; color: var(--cs-red); white-space: nowrap; font-variant-numeric: tabular-nums; }
.cs-timeline h3 { font-family: 'Noto Sans', sans-serif; font-weight: bold; font-size: 1.6rem; margin: 0 0 0.4rem; color: var(--cs-ink); }
.case-study .cs-timeline p { font-size: 1.5rem; line-height: 2.4rem; color: var(--cs-muted); }

/* Learnings */
.cs-learn { display: grid; gap: 2.8rem; }
.cs-learn > div { display: grid; gap: 0.6rem; }
.cs-learn h3 { font-size: 2.2rem; margin: 0; color: var(--cs-head); }

/* More work */
.cs-next { display: grid; gap: 2rem; padding: 5.6rem 0 8rem; border-top: 0.1rem solid var(--cs-rule); }
.cs-next ul { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(22rem, 1fr)); gap: 1.6rem; }
.cs-next a.btn { margin: 0; height: 100%; text-align: left; display: grid; gap: 0.4rem; padding: 1.6rem 2rem; }
.cs-next .cs-co { font-size: 1.1rem; letter-spacing: 0.12em; text-transform: uppercase; }
.cs-next .cs-ti { font-family: 'Choplin-Medium', 'Noto Sans', sans-serif; font-size: 2rem; line-height: 1.2; }

.case-study a:focus-visible { outline: 0.2rem solid var(--cs-teal); outline-offset: 0.3rem; }

@media (max-width: 35em) {
  .case-study #nav #menu li a { padding: 0.6rem 1rem; }
  .cs-timeline li { grid-template-columns: 1fr; gap: 0.4rem; }
  .case-study main p { font-size: 1.6rem; line-height: 2.6rem; }
}
@media (prefers-reduced-motion: reduce) {
  .case-study * { transition: none !important; }
}