/* ==========================================================================
   David Boston, Portfolio (v4: sidebar layout)
   System: personal brand (stylesheet 2019). Navy #2B3748, sand #E1C599,
   near-black #2C2C2C, white. Lato everywhere. Signature device: the
   wordmark's light/bold pairing, echoed in the sidebar brand and section
   labels. Sand is the only accent and appears sparingly.

   Shell: persistent left sidebar (identity + nav) with content on the
   right, grid of project tiles on the index, reading column on case
   pages. Hover overlays are a desktop enhancement only; captions below
   each tile carry the essentials everywhere.
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Lato:ital,wght@0,300;0,400;0,700;0,900;1,400&display=swap');

:root {
  --navy: #2b3748;
  --sand: #e1c599;
  --sand-tint: #f7efe1;
  --ink: #2c2c2c;
  --ink-soft: #5c6470;
  --hairline: #e6e3dd;
  --white: #ffffff;
  --font: 'Lato', sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

/* Cross-page fade via the View Transitions API. Browsers without support
   navigate instantly, no fallback code needed. */
@view-transition { navigation: auto; }
::view-transition-old(root),
::view-transition-new(root) { animation-duration: 0.25s; }

body {
  margin: 0;
  background: var(--white);
  color: var(--ink);
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--navy); text-decoration: none; }
a:focus-visible, button:focus-visible { outline: 2px solid var(--navy); outline-offset: 2px; }

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
  @view-transition { navigation: none; }
}

/* --------------------------------------------------------------------
   Shell: sidebar + content
   -------------------------------------------------------------------- */

.shell {
  max-width: 1200px;
  margin: 0 auto;
  padding: 56px 32px 72px;
  display: grid;
  grid-template-columns: 232px minmax(0, 1fr);
  gap: 64px;
  align-items: start;
}

.content { min-width: 0; }

/* --------------------------------------------------------------------
   Sidebar, identity + nav, sticky on desktop
   -------------------------------------------------------------------- */

.sidebar {
  position: sticky;
  top: 56px;
}

.side-brand {
  display: block;
  margin-bottom: 20px;
}

.side-brand img {
  height: 44px;
  width: auto;
  display: block;
  margin-bottom: 14px;
}

.side-wordmark {
  font-size: 15px;
  font-weight: 300;
  letter-spacing: 0.22em;
  color: var(--navy);
  text-transform: uppercase;
}

.side-wordmark b { font-weight: 900; }

.side-role {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin: 0 0 16px;
}

.side-bio {
  font-size: 14px;
  font-weight: 400;
  line-height: 1.6;
  color: var(--ink-soft);
  margin: 0 0 28px;
}

.side-nav { display: flex; flex-direction: column; gap: 2px; }

.side-nav a {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
  padding: 6px 0;
  border-bottom: 2px solid transparent;
  align-self: flex-start;
}

.side-nav a:hover { color: var(--navy); border-bottom-color: var(--sand); }

.side-nav a[aria-current="page"] { color: var(--navy); }

/* --------------------------------------------------------------------
   Index, project tile grid
   -------------------------------------------------------------------- */

.sheet-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px;
}

.sheet-card {
  background: var(--white);
  border: 1px solid var(--hairline);
  border-radius: 4px;
  display: flex;
  flex-direction: column;
  transition: border-color 0.15s ease, transform 0.15s ease, box-shadow 0.15s ease;
}

.sheet-card:not(.sheet-card--soon):hover {
  border-color: var(--navy);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(43, 55, 72, 0.08);
}

/* Screenshot area, overlay parent */

.sheet-card__shot {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--hairline);
}

.sheet-card__cover {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  object-position: center top;
  display: block;
  background: var(--sand-tint);
}

/* Placeholder cover for projects without exported screens yet */
.sheet-card__cover--ph {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--sand-tint);
  color: #8a6d3b;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-align: center;
  padding: 0 24px;
}

/* Hover overlay, desktop enhancement only. Everything essential lives in
   the caption below, so touch devices lose nothing. */

.sheet-card__ov {
  position: absolute;
  inset: 0;
  background: rgba(43, 55, 72, 0.94);
  color: var(--white);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 6px;
  padding: 22px;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.sheet-card:hover .sheet-card__ov,
.sheet-card:focus-visible .sheet-card__ov { opacity: 1; }

.sheet-card__ov strong { font-size: 19px; font-weight: 900; }

.sheet-card__ov .ov-meta {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.65);
}

.sheet-card__ov .ov-stat { font-size: 14px; color: var(--sand); }

/* Caption below the screenshot, always visible, carries the essentials */

.sheet-card__body { padding: 18px 22px 20px; flex: 1; }

.sheet-card__body h2 {
  font-size: 22px;
  font-weight: 900;
  color: var(--navy);
  margin: 0 0 4px;
}

.sheet-card__sub { margin: 0; color: var(--ink-soft); font-size: 15px; }

.sheet-card__sub em { font-style: normal; color: #8a6d3b; }

/* Coming-soon cards: real content, not yet clickable */

.sheet-card--soon { cursor: default; }

/* --------------------------------------------------------------------
   Case study header
   -------------------------------------------------------------------- */

.title-block { padding: 0 0 8px; }

.title-block__top {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 32px;
}

.title-block__name h1 {
  font-size: 40px;
  font-weight: 900;
  color: var(--navy);
  margin: 0 0 8px;
  letter-spacing: -0.01em;
  line-height: 1.1;
}

.title-block__name p {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin: 0;
}

.title-block__stamp {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 2px;
  text-align: right;
  flex-shrink: 0;
}

.title-block__stamp span {
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.title-block__stamp strong {
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--navy);
}

.title-block__fields {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 32px;
  padding-top: 20px;
  border-top: 1px solid var(--hairline);
}

.title-block__fields label {
  display: block;
  font-size: 10.5px;
  font-weight: 400;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 4px;
}

.title-block__fields strong {
  font-size: 14px;
  font-weight: 700;
  color: var(--navy);
}

/* --------------------------------------------------------------------
   Case study body
   -------------------------------------------------------------------- */

.case-body {
  max-width: 680px;
  padding: 40px 0 0;
}

.case-section { margin-bottom: 60px; }

.case-section__label {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 18px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--navy);
}

.case-section__label .num { color: #8a6d3b; font-weight: 900; }

.case-section__label::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--hairline);
}

.case-section h2 {
  font-size: 25px;
  font-weight: 900;
  color: var(--navy);
  margin: 0 0 14px;
}

.case-section p { margin: 0 0 16px; font-size: 17px; }

.case-section blockquote {
  margin: 28px 0;
  padding: 4px 0 4px 22px;
  border-left: 3px solid var(--sand);
  font-size: 20px;
  font-weight: 300;
  font-style: italic;
  color: var(--navy);
  line-height: 1.55;
}

.case-section ul, .case-section ol { padding-left: 22px; margin: 0 0 16px; }

.case-section li { margin-bottom: 8px; }

.metric-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 24px 28px;
  align-items: start;
  margin: 24px 0;
  padding: 22px 0;
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
}

.metric-row strong {
  display: block;
  font-size: 30px;
  font-weight: 900;
  color: var(--navy);
  line-height: 1.15;
}

.metric-row span {
  font-size: 11px;
  font-weight: 400;
  color: var(--ink-soft);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

table.decision-table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
  font-size: 14.5px;
}

table.decision-table th, table.decision-table td {
  border: 1px solid var(--hairline);
  padding: 10px 14px;
  text-align: left;
}

table.decision-table th {
  background: var(--sand-tint);
  font-size: 11.5px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--navy);
}

/* TBD placeholder, flags data gaps rather than hiding them */

.tbd {
  display: block;
  margin: 12px 0;
  padding: 12px 16px;
  background: var(--sand-tint);
  border: 1px dashed var(--sand);
  border-radius: 3px;
  font-size: 13px;
  font-weight: 700;
  color: #8a6d3b;
}

.case-image {
  width: 100%;
  border: 1px solid var(--hairline);
  border-radius: 4px;
  margin: 24px 0;
  display: block;
}

.case-caption {
  font-size: 13px;
  color: var(--ink-soft);
  margin-top: -14px;
  margin-bottom: 24px;
}

/* --------------------------------------------------------------------
   About
   -------------------------------------------------------------------- */

.about-body { max-width: 680px; }

.about-body .portrait {
  width: 100%;
  max-width: 420px;
  border: 1px solid var(--hairline);
  border-radius: 4px;
  margin: 0 0 32px;
  display: block;
}

.about-body h1 {
  font-size: 40px;
  font-weight: 900;
  color: var(--navy);
  margin: 0 0 20px;
  letter-spacing: -0.01em;
}

.contact-block {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--hairline);
}

.contact-block h2 {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--navy);
  margin: 0 0 12px;
}

.contact-block a { font-weight: 700; }
.contact-block a:hover { border-bottom: 2px solid var(--sand); }

/* --------------------------------------------------------------------
   Mobile, sidebar stacks on top, nav goes horizontal
   -------------------------------------------------------------------- */

@media (max-width: 860px) {
  .shell {
    grid-template-columns: 1fr;
    gap: 40px;
    padding: 36px 20px 56px;
  }

  .sidebar { position: static; }

  .side-brand img { height: 36px; margin-bottom: 10px; }
  .side-bio { margin-bottom: 20px; max-width: 480px; }

  .side-nav { flex-direction: row; gap: 22px; }

  .sheet-grid { grid-template-columns: 1fr; gap: 24px; }

  .title-block__top { flex-direction: column-reverse; align-items: flex-start; gap: 16px; }
  .title-block__stamp { align-items: flex-start; text-align: left; }
  .title-block__name h1 { font-size: 32px; }
  .title-block__fields { grid-template-columns: repeat(2, 1fr); }
}