/* Case-study page styles. Loaded after styles.css (shares design tokens). */

.case-main { padding-top: 72px; }

/* ---------- CASE HERO ---------- */
.case-hero { padding: 96px 0 64px; border-bottom: 1px solid var(--line); }
.back-link {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono); font-size: 0.74rem; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--ink-3); text-decoration: none; margin-bottom: 40px;
  transition: color var(--ease);
}
.back-link:hover { color: var(--ink); }
.case-hero .eyebrow { display: block; margin-bottom: 18px; }
.case-hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.4rem); font-weight: 300; letter-spacing: -0.025em;
  line-height: 1.06; color: var(--ink); max-width: 18ch;
}
.case-hero .summary {
  margin-top: 22px; max-width: 56ch; font-size: clamp(1.05rem, 1.8vw, 1.3rem);
  font-weight: 300; line-height: 1.5; color: var(--ink-2);
}
.case-hero .links { margin-top: 32px; }

/* Meta chips */
.case-meta {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px;
  background: var(--line); border: 1px solid var(--line);
  border-radius: var(--radius); overflow: hidden; margin-top: 48px;
}
.case-meta .cell { background: var(--bg); padding: 18px 20px; }
.case-meta .k {
  display: block; font-family: var(--font-mono); font-size: 0.66rem;
  letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 6px;
}
.case-meta .v { font-size: 0.95rem; color: var(--ink); font-weight: 400; }

/* ---------- CASE SECTIONS ---------- */
.case-section { padding: 72px 0; border-bottom: 1px solid var(--line); }
.case-section:last-of-type { border-bottom: 0; }
.case-section > .wrap { display: grid; grid-template-columns: 220px 1fr; gap: 48px; align-items: start; }
.case-section h2 {
  font-family: var(--font-mono); font-size: 0.8rem; font-weight: 500;
  letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-3);
  padding-top: 6px;
}
.case-prose { max-width: 68ch; }
.case-prose > * + * { margin-top: 20px; }
.case-prose h3 { font-size: 1.4rem; font-weight: 400; letter-spacing: -0.015em; color: var(--ink); }
.case-prose p { color: var(--ink-2); font-size: 1.05rem; }
.case-prose strong { color: var(--ink); font-weight: 500; }
.case-prose a { color: var(--accent); text-decoration: none; border-bottom: 1.5px solid transparent; transition: border-color var(--ease); }
.case-prose a:hover { border-bottom-color: var(--accent); }
.case-prose ul { list-style: none; }
.case-prose li { position: relative; padding-left: 22px; color: var(--ink-2); font-size: 1.02rem; margin-top: 12px; }
.case-prose li::before { content: ""; position: absolute; left: 0; top: 12px; width: 8px; height: 1.5px; background: var(--accent); }

/* Stat callouts inside prose */
.callouts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; margin-top: 8px; }
.callout .num { font-size: 1.9rem; font-weight: 400; letter-spacing: -0.02em; color: var(--ink); }
.callout .lbl { font-size: 0.85rem; color: var(--ink-3); margin-top: 4px; }

/* Tech stack chips */
.stack { display: flex; flex-wrap: wrap; gap: 10px; }
.stack span {
  font-family: var(--font-mono); font-size: 0.78rem; color: var(--ink-2);
  background: var(--bg-2); border: 1px solid var(--line); border-radius: 100px; padding: 7px 14px;
}

/* ---------- DIAGRAM ---------- */
.diagram {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 36px; margin-top: 8px; overflow-x: auto;
}
.diagram svg { display: block; width: 100%; height: auto; max-width: 760px; margin: 0 auto; }
.diagram .cap { font-family: var(--font-mono); font-size: 0.74rem; color: var(--ink-3); margin-top: 18px; text-align: center; }

/* ---------- GALLERY ---------- */
.gallery { display: grid; gap: 28px; }
.gallery.cols-2 { grid-template-columns: 1fr 1fr; }
.gallery.cols-3 { grid-template-columns: repeat(3, 1fr); }
.shot { margin: 0; }
.shot img {
  display: block; width: 100%; height: auto; border-radius: var(--radius);
  border: 1px solid var(--line); background: var(--bg-2);
}
.shot.phone img { border-radius: var(--radius-lg); }
.shot figcaption { margin-top: 12px; font-family: var(--font-mono); font-size: 0.74rem; color: var(--ink-3); }

/* Placeholder frames for shots awaiting capture */
.shot.placeholder {
  border: 1px dashed var(--line); border-radius: var(--radius); background: var(--bg-2);
  aspect-ratio: 4 / 3; display: flex; align-items: center; justify-content: center;
  text-align: center; padding: 24px;
}
.shot.placeholder.phone { aspect-ratio: 9 / 19; }
.shot.placeholder span { font-family: var(--font-mono); font-size: 0.72rem; color: var(--ink-3); letter-spacing: 0.04em; }

/* ---------- NEXT / PREV ---------- */
.case-next { padding: 72px 0; }
.case-next .wrap { display: flex; justify-content: space-between; align-items: center; gap: 24px; flex-wrap: wrap; }
.case-next .next-link { font-size: 1.3rem; font-weight: 400; letter-spacing: -0.015em; color: var(--ink); text-decoration: none;
  border-bottom: 1.5px solid transparent; transition: border-color var(--ease); }
.case-next .next-link:hover { border-bottom-color: var(--ink); }

@media (max-width: 900px) {
  .case-section > .wrap { grid-template-columns: 1fr; gap: 16px; }
  .case-meta { grid-template-columns: 1fr 1fr; }
  .callouts { grid-template-columns: 1fr; gap: 16px; }
  .gallery.cols-2, .gallery.cols-3 { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .case-meta { grid-template-columns: 1fr; }
}