:root {
  /* Typography */
  --font-display: "Syne", sans-serif;
  --font-body: "Manrope", sans-serif;
  --font-detail: "DM Mono", monospace;

  /* Core Palette */
  --color-ink: #1a1a2e;
  --color-parchment: #f5f0e8;
  --color-parchment-dark: #e8e0d0;

  /* Leimert Park Palette */
  --color-vision-tower: #7ba89e;
  --color-stucco-warmth: #d4a574;
  --color-kente-gold: #e8c547;
  --color-burgundy-heritage: #8b3a3a;
  --color-burgundy-deep: #5c2525;
  --color-pale-adobe: #e8dcc8;

  /* Accents */
  --color-sun: var(--color-kente-gold);
  --color-sun-warm: var(--color-stucco-warmth);
  --color-cream: var(--color-pale-adobe);

  /* UI */
  --border: rgba(26, 26, 46, 0.15);
  --shadow: 0 18px 45px rgba(26, 26, 46, 0.18);
  --shadow-soft: 0 10px 24px rgba(26, 26, 46, 0.1);
  --radius: 4px;
  --radius-card: 2px;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 8rem;
}

.about__swatches {
  display: flex;
  gap: 10px;
  align-items: center;
}

.swatch {
  display: inline-block;
  width: 18px;
  height: 18px;
  border-radius: 999px;
  border: 1px solid rgba(0, 0, 0, 0.25);
}

.swatch--base {
  background: var(--color-parchment);
}
.swatch--dark {
  background: var(--color-burgundy-heritage);
}
.swatch--primary {
  background: var(--color-vision-tower);
}
.swatch--accent {
  background: var(--color-sun);
}
.swatch--alert {
  background: var(--color-stucco-warmth);
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--color-ink);
  background: var(--color-parchment);
}

.wrap {
  width: min(1100px, calc(100% - 2.2rem));
  margin: 0 auto;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* ── Topbar ── */
.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(12px);
  background: rgba(245, 240, 232, 0.76);
  border-bottom: 1px solid var(--border);
}

.topbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem 0;
  gap: 1rem;
}

.brand {
  text-decoration: none;
  color: var(--color-burgundy-heritage);
  display: inline-flex;
  flex-direction: column;
  gap: 0.05rem;
}

.brand__title {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.2px;
  font-size: 1.15rem;
}

.brand__tag {
  font-size: 0.9rem;
  color: rgba(26, 26, 46, 0.6);
}

.topnav {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.topnav__link {
  text-decoration: none;
  color: rgba(26, 26, 46, 0.6);
  padding: 0.55rem 0.75rem;
  border-radius: 999px;
  border: 1px solid transparent;
  transition:
    background 180ms ease,
    border-color 180ms ease,
    color 180ms ease;
}

.topnav__link:hover {
  background: rgba(245, 240, 232, 0.55);
  border-color: var(--border);
  color: var(--color-burgundy-heritage);
}

.cs-nav-back {
  font-size: 0.82rem;
  color: rgba(26, 26, 46, 0.55);
  text-decoration: none;
  transition: color 180ms ease;
}

.cs-nav-back:hover {
  color: var(--color-vision-tower);
}

/* ── Hero ── */
.hero {
  padding: 3.2rem 0 1.5rem;
}

.hero__inner {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 1.2rem;
  align-items: start;
}

@media (max-width: 860px) {
  .hero__inner {
    grid-template-columns: 1fr;
  }
}

/* Hero — case study variant */
.hero--cs {
  padding: 3.5rem 0 0;
  border-bottom: 1px solid var(--border);
}

.hero--cs .hero__inner {
  grid-template-columns: 1fr;
  max-width: 780px;
}

.cs-kicker {
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(26, 26, 46, 0.45);
  margin: 0 0 1rem;
  display: block;
}

.hero--cs h1 {
  font-size: clamp(2.6rem, 6vw, 4.2rem);
  margin-bottom: 0.4rem;
}

.hero--cs .lede {
  font-size: 0.95rem;
  margin-bottom: 2rem;
}

.hero-meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  border-top: 1px solid var(--border);
  padding-top: 1.5rem;
  margin-top: 0.5rem;
  padding-bottom: 2.5rem;
}

.hero-meta-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding-right: 2.5rem;
  margin-right: 2.5rem;
  border-right: 1px solid var(--border);
}

.hero-meta-item:last-child {
  border-right: none;
  margin-right: 0;
  padding-right: 0;
}

.meta-label {
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(26, 26, 46, 0.4);
}

.meta-value {
  font-size: 0.82rem;
  color: var(--color-ink);
}

h1 {
  font-family: var(--font-display);
  color: var(--color-burgundy-heritage);
  font-size: clamp(2.1rem, 3.6vw, 3rem);
  margin: 0 0 0.65rem;
}

.lede {
  margin: 0 0 1.15rem;
  color: rgba(26, 26, 46, 0.65);
  line-height: 1.7;
  max-width: 68ch;
}

.hero__actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 1.1rem;
}

.controls input {
  width: min(560px, 100%);
  padding: 0.9rem 1.05rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(253, 246, 227, 0.78);
  color: var(--color-burgundy-heritage);
  box-shadow: var(--shadow-soft);
  outline: none;
}

.controls input:focus {
  border-color: rgba(123, 168, 158, 0.65);
  box-shadow: 0 0 0 4px rgba(123, 168, 158, 0.18);
}

.hero__card {
  background: rgba(245, 240, 232, 0.78);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.15rem 1.1rem;
  box-shadow: var(--shadow-soft);
}

.hero__cardTitle {
  margin: 0 0 0.6rem;
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--color-burgundy-heritage);
}

.hero__list {
  margin: 0;
  padding-left: 1.15rem;
  color: rgba(26, 26, 46, 0.65);
  line-height: 1.7;
}

/* ── Section ── */
.section {
  padding: 2.4rem 0 3rem;
}

.section--soft {
  padding: 2.7rem 0 3.2rem;
  background: rgba(245, 240, 232, 0.38);
  border-top: 1px solid rgba(26, 26, 46, 0.08);
  border-bottom: 1px solid rgba(26, 26, 46, 0.08);
}

.section__head {
  margin-bottom: 1.1rem;
}

.section__head h2 {
  font-family: var(--font-display);
  font-size: 1.9rem;
  margin: 0 0 0.35rem;
  color: var(--color-burgundy-heritage);
}

.section__sub {
  margin: 0;
  color: rgba(26, 26, 46, 0.65);
  line-height: 1.7;
  max-width: 78ch;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.68rem 1.05rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(245, 240, 232, 0.74);
  color: var(--color-burgundy-heritage);
  text-decoration: none;
  cursor: pointer;
  box-shadow: var(--shadow-soft);
  transition:
    transform 180ms ease,
    background 180ms ease,
    border-color 180ms ease,
    color 180ms ease;
  font-weight: 600;
}

.btn:hover {
  transform: translateY(-1px);
  background: rgba(245, 240, 232, 0.9);
  border-color: rgba(123, 168, 158, 0.28);
}

.btn--ghost {
  background: transparent;
  box-shadow: none;
}

.btn--primary {
  background: linear-gradient(
    180deg,
    var(--color-burgundy-heritage),
    var(--color-burgundy-deep)
  );
  color: var(--color-pale-adobe);
  border-color: rgba(139, 58, 58, 0.22);
}

.btn--primary:hover {
  background: linear-gradient(
    180deg,
    var(--color-burgundy-deep),
    var(--color-burgundy-heritage)
  );
}

.btn--accent {
  background: linear-gradient(180deg, var(--color-sun), var(--color-sun-warm));
  color: var(--color-ink);
  border-color: rgba(232, 197, 71, 0.35);
}

.btn--accent:hover {
  background: linear-gradient(180deg, var(--color-sun-warm), var(--color-sun));
}

/* ── Grid ── */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
}

/* ── Card ── */
.card {
  border: 1px solid var(--border);
  background: rgba(245, 240, 232, 0.68);
  border-radius: var(--radius);
  overflow: hidden;
  text-align: left;
  padding: 0;
  cursor: pointer;
  box-shadow: var(--shadow-soft);
  transition:
    transform 180ms ease,
    background 180ms ease,
    border-color 180ms ease;
}

.card:hover {
  transform: translateY(-4px);
  background: rgba(245, 240, 232, 0.82);
  border-color: rgba(123, 168, 158, 0.22);
}

.card img {
  width: 100%;
  height: 170px;
  object-fit: cover;
  display: block;
  filter: saturate(1.02) contrast(1.02);
}

.card__meta {
  padding: 0.95rem 0.95rem 1.05rem;
}

.card__meta h3 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  margin: 0 0 0.25rem;
  color: var(--color-burgundy-heritage);
}

.card__meta p {
  margin: 0;
  color: rgba(26, 26, 46, 0.65);
  font-size: 0.92rem;
  line-height: 1.45;
}

/* ── About ── */
.about {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 1.2rem;
  align-items: start;
}

@media (max-width: 860px) {
  .about {
    grid-template-columns: 1fr;
  }
}

.about p {
  color: rgba(26, 26, 46, 0.65);
  line-height: 1.75;
}

.about__callout {
  background: rgba(245, 240, 232, 0.62);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.1rem;
  box-shadow: var(--shadow-soft);
}

.about__label {
  font-family: var(--font-display);
  margin: 0 0 0.65rem;
  color: var(--color-burgundy-heritage);
  font-weight: 700;
}

.about__hint {
  margin: 0;
  color: rgba(26, 26, 46, 0.65);
  line-height: 1.6;
}

/* ── Lightbox ── */
.lightbox[aria-hidden="true"] {
  display: none;
}

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 999;
}

.lightbox__backdrop {
  position: absolute;
  inset: 0;
  background: var(--color-vision-tower);
}

.lightbox__panel {
  position: relative;
  width: min(1100px, calc(100% - 2rem));
  margin: 3vh auto;
  background: rgba(245, 240, 232, 0.94);
  border: 1px solid var(--border);
  border-radius: 20px;
  box-shadow: var(--shadow);
  padding: 1rem;
  max-height: 90vh;
  overflow-y: auto;
}

.lightbox__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.25rem 0.25rem 0.8rem;
}

.lightbox__kicker {
  margin: 0 0 0.2rem;
  color: rgba(26, 26, 46, 0.6);
  font-size: 0.9rem;
}

.lightbox__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--color-burgundy-heritage);
}

.lightbox__desc {
  margin: 0.75rem 0 0.15rem;
  color: rgba(26, 26, 46, 0.65);
  line-height: 1.6;
}

.lightbox__close {
  position: absolute;
  top: 0.65rem;
  right: 0.65rem;
  border: 1px solid var(--border);
  background: rgba(245, 240, 232, 0.86);
  color: var(--color-burgundy-heritage);
  border-radius: 999px;
  width: 40px;
  height: 40px;
  cursor: pointer;
  box-shadow: var(--shadow-soft);
}

.lightbox__close:hover {
  background: var(--color-parchment);
}

.lightbox__panel img {
  width: 100%;
  height: auto;
  border-radius: 14px;
  display: block;
  border: 1px solid var(--border);
}

/* ── Footer ── */
.footer {
  padding: 2rem 0;
  border-top: 1px solid rgba(26, 26, 46, 0.12);
}

.footer__inner {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  color: rgba(26, 26, 46, 0.6);
}

.footer__muted {
  opacity: 0.9;
}

/* ─────────────────────────────────────────
   Case Study Sections
───────────────────────────────────────── */

.cs-section {
  padding: 4rem 0;
  border-bottom: 1px solid var(--border);
  background: transparent;
}

.cs-section .wrap {
  max-width: 780px;
}

.cs-section--wide .wrap {
  max-width: 1100px;
}

.cs-num {
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-vision-tower);
  display: block;
  margin-bottom: 0.75rem;
  font-family: var(--font-detail);
}

.cs-section h2 {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  color: var(--color-burgundy-heritage);
  margin: 0 0 1.5rem;
}

.cs-section p {
  color: rgba(26, 26, 46, 0.68);
  line-height: 1.8;
  margin: 0 0 1.1rem;
  max-width: 64ch;
}

.cs-section p:last-of-type {
  margin-bottom: 0;
}

/* Swatch strip */
.swatch-strip {
  display: flex;
  height: 5px;
  margin: 2rem 0 0.5rem;
  overflow: hidden;
  border-radius: 2px;
}

.swatch-strip span {
  flex: 1;
}

.swatch-strip-label {
  font-size: 0.7rem;
  color: rgba(26, 26, 46, 0.35);
  margin: 0;
  max-width: none;
  font-family: var(--font-detail);
}

/* Tech table */
.cs-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 2.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.cs-table tr {
  border-bottom: 1px solid var(--border);
}

.cs-table tr:last-child {
  border-bottom: none;
}

.cs-table td {
  padding: 0.85rem 1.1rem;
  font-size: 0.82rem;
  line-height: 1.5;
}

.cs-table td:first-child {
  font-family: var(--font-detail);
  font-size: 0.7rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: rgba(26, 26, 46, 0.4);
  width: 160px;
  border-right: 1px solid var(--border);
  background: rgba(245, 240, 232, 0.5);
}

.cs-table td:last-child {
  color: var(--color-ink);
}

code.inline {
  font-family: var(--font-detail);
  font-size: 0.82em;
  background: rgba(123, 168, 158, 0.12);
  color: var(--color-vision-tower);
  padding: 0.1em 0.4em;
  border-radius: 3px;
}

/* Callout block */
.cs-callout {
  margin-top: 2rem;
  padding: 1.5rem;
  border: 1px solid var(--border);
  border-left: 3px solid var(--color-vision-tower);
  background: rgba(245, 240, 232, 0.55);
  border-radius: 0 var(--radius) var(--radius) 0;
}

.cs-callout h3 {
  font-family: var(--font-detail);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-vision-tower);
  margin: 0 0 0.6rem;
  font-weight: 500;
}

.cs-callout p {
  font-size: 0.88rem;
  margin: 0;
  max-width: none;
  color: rgba(26, 26, 46, 0.7);
}

/* Feature list */
.cs-features {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 0;
}

.cs-features li {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 1.5rem;
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.88rem;
}

.cs-features li:first-child {
  border-top: 1px solid var(--border);
}

.cs-feature-name {
  color: var(--color-burgundy-heritage);
  font-weight: 500;
}

.cs-feature-desc {
  color: rgba(26, 26, 46, 0.65);
  line-height: 1.6;
}

/* Roadmap */
.cs-roadmap {
  margin-top: 2rem;
}

.cs-roadmap-item {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 1.25rem;
  padding: 1.75rem 0;
  border-bottom: 1px solid var(--border);
  align-items: start;
}

.cs-roadmap-item:first-child {
  border-top: 1px solid var(--border);
}

.cs-roadmap-num {
  font-family: var(--font-detail);
  font-size: 0.72rem;
  letter-spacing: 0.07em;
  color: var(--color-vision-tower);
  padding-top: 0.2rem;
}

.cs-roadmap-content h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--color-burgundy-heritage);
  margin: 0 0 0.35rem;
}

.cs-roadmap-content p {
  font-size: 0.85rem;
  color: rgba(26, 26, 46, 0.6);
  margin: 0;
  max-width: none;
  line-height: 1.65;
}

/* Divider into gallery */
.cs-divider {
  padding: 3rem 0 1rem;
  border-bottom: 1px solid var(--border);
}

.cs-divider .wrap {
  max-width: 780px;
}

.cs-divider-label {
  font-family: var(--font-detail);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(26, 26, 46, 0.4);
  display: block;
  margin-bottom: 0.5rem;
}

.cs-divider h2 {
  font-family: var(--font-display);
  font-size: 1.6rem;
  color: var(--color-burgundy-heritage);
  margin: 0 0 0.4rem;
}

.cs-divider p {
  color: rgba(26, 26, 46, 0.6);
  margin: 0;
  font-size: 0.88rem;
}

/* ── Responsive ── */
@media (max-width: 640px) {
  .hero-meta-row {
    gap: 1.25rem;
  }
  .hero-meta-item {
    border-right: none;
    margin-right: 0;
    padding-right: 0;
  }
  .cs-features li {
    grid-template-columns: 1fr;
    gap: 0.3rem;
  }
  .cs-roadmap-item {
    grid-template-columns: 36px 1fr;
  }
  .cs-table td:first-child {
    width: 110px;
  }
}