/* ---------- Design tokens ----------
   Single committed dark theme, matched to the case-study infographics:
   deep teal-black base, glowing cyan as the dominant structural color,
   warm gold reserved for highlighted / active moments. */
:root {
  --bg: #070f11;
  --surface: #0c1719;
  --surface-2: #101e20;
  --text: #eaf5f3;
  --text-muted: #85a29f;
  --text-dim: #46605d;
  --border: #1c3436;
  --border-strong: #2c4d4f;

  --accent: #f0b64a;
  --accent-soft: rgba(240, 182, 74, 0.12);
  --accent-text: #0a0f0a;
  --cyan: #4de3d1;
  --cyan-soft: rgba(77, 227, 209, 0.09);

  --font-display: 'Anton', 'Rajdhani', sans-serif;
  --font-heading: 'Rajdhani', 'Titillium Web', sans-serif;
  --font-body: 'Titillium Web', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'IBM Plex Mono', 'SFMono-Regular', Menlo, monospace;

  --max-width: 1120px;
  --cut: 16px;
  color-scheme: dark;
}

/* ---------- Reset ---------- */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  background-image:
    repeating-linear-gradient(0deg, rgba(77, 227, 209, 0.03) 0px, rgba(77, 227, 209, 0.03) 1px, transparent 1px, transparent 48px),
    repeating-linear-gradient(90deg, rgba(77, 227, 209, 0.03) 0px, rgba(77, 227, 209, 0.03) 1px, transparent 1px, transparent 48px);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; }
h1, h2, h3, h4 { font-family: var(--font-heading); font-weight: 600; line-height: 1.15; margin: 0 0 .5em; text-wrap: balance; }
p { margin: 0 0 1em; color: var(--text-muted); }
ul, ol { padding-left: 0; margin: 0; }

.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--accent);
  color: var(--accent-text);
  padding: 10px 16px;
  z-index: 200;
  font-family: var(--font-mono);
}
.skip-link:focus { left: 0; }

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: .75rem;
  font-weight: 500;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: .9em;
  display: flex;
  align-items: center;
  gap: .6em;
}
.eyebrow::before {
  content: "";
  display: inline-block;
  width: 18px;
  height: 1px;
  background: var(--cyan);
}

/* ---------- Cut-corner panel treatment ---------- */
.cut-corners {
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, var(--cut) 100%, 0 calc(100% - var(--cut)));
}
.corner-mark {
  position: absolute;
  top: 14px;
  right: 16px;
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: .9rem;
  opacity: .6;
  line-height: 1;
  pointer-events: none;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .6em;
  padding: .8em 1.5em;
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: .82rem;
  letter-spacing: .06em;
  text-transform: uppercase;
  text-decoration: none;
  border: 1px solid transparent;
  transition: transform .15s ease, background .15s ease, border-color .15s ease, color .15s ease;
  cursor: pointer;
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px));
}
.btn:hover { transform: translateY(-1px); }
.btn-primary {
  background: var(--accent);
  color: var(--accent-text);
}
.btn-primary:hover { filter: brightness(1.08); }
.btn-ghost {
  background: var(--surface);
  border-color: var(--border-strong);
  color: var(--text);
}
.btn-ghost:hover { border-color: var(--cyan); color: var(--cyan); }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(7, 15, 17, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.logo {
  font-family: var(--font-mono);
  font-size: .95rem;
  font-weight: 600;
  letter-spacing: .04em;
  text-decoration: none;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: .4em;
}
.logo .bracket { color: var(--accent); }
.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 6px var(--cyan);
  display: inline-block;
  margin-left: 4px;
}
.main-nav {
  display: flex;
  gap: 8px;
}
.main-nav a {
  text-decoration: none;
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: .78rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--text-muted);
  padding: 8px 12px;
  transition: color .15s ease, background .15s ease;
}
.main-nav a:hover { color: var(--cyan); background: var(--cyan-soft); }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 38px;
  height: 38px;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  height: 2px;
  width: 18px;
  margin: 0 auto;
  background: var(--text);
  transition: transform .2s ease, opacity .2s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  padding: 76px 0 72px;
  border-bottom: 1px solid var(--border);
  position: relative;
}
.hero-inner {
  max-width: 820px;
  padding: 40px;
  border: 1px solid var(--border-strong);
  background: linear-gradient(180deg, rgba(16, 30, 32, 0.6), transparent);
  position: relative;
}
.hero h1 {
  font-size: clamp(1.9rem, 3.6vw, 2.8rem);
  letter-spacing: -.005em;
  margin-bottom: .55em;
  color: var(--text);
  font-family: var(--font-heading);
  font-weight: 700;
}
.hero h1 .hl { color: var(--cyan); }
.hero-lede {
  font-size: 1.08rem;
  max-width: 640px;
  color: var(--text-muted);
}
.hero-cta {
  display: flex;
  gap: 14px;
  margin: 32px 0 48px;
  flex-wrap: wrap;
}
.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  margin: 0;
}
.hero-stats > div {
  background: var(--surface);
  padding: 16px 18px;
}
.hero-stats dt {
  font-family: var(--font-display);
  font-size: 1.9rem;
  font-weight: 400;
  color: var(--accent);
  letter-spacing: .01em;
}
.hero-stats dd {
  margin: .3em 0 0;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--text-muted);
}

/* ---------- Section shared ---------- */
section { padding: 84px 0; }
.section-head { max-width: 680px; margin-bottom: 44px; }
.section-head h2 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  text-transform: uppercase;
  letter-spacing: .01em;
  color: var(--text);
}
.section-lede { font-size: 1rem; }

/* ---------- Work / case studies ---------- */
.work { border-bottom: 1px solid var(--border); }
.case-list { display: flex; flex-direction: column; gap: 18px; }

.case {
  border: 1px solid var(--border-strong);
  background: var(--surface);
}

.case-filehead {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
  align-items: center;
  padding: 10px 20px;
  border-bottom: 1px solid var(--border);
  background: var(--surface-2);
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .05em;
  text-transform: uppercase;
  color: var(--text-dim);
}
.case-filehead .file-id { color: var(--cyan); }
.case-filehead .file-status { color: var(--accent); margin-left: auto; }

.case-summary {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 28px;
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 24px;
  cursor: pointer;
  color: inherit;
  font: inherit;
}
.case-media {
  border: 1px solid var(--border);
  overflow: hidden;
  align-self: start;
  aspect-ratio: 4/3;
}
.case-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
}
.case-illustration { width: 100%; height: auto; aspect-ratio: 4/3; }

.case-full-image {
  margin: 20px 0 8px;
  border: 1px solid var(--border-strong);
}
.case-full-image img { width: 100%; height: auto; }
.case-full-image figcaption {
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--text-dim);
  padding: 8px 14px;
  border-top: 1px solid var(--border);
  background: var(--surface-2);
}

.case-tag {
  display: block;
  font-family: var(--font-mono);
  font-size: .7rem;
  font-weight: 500;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: .9em;
}
.case-title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(1.5rem, 2.6vw, 2rem);
  letter-spacing: .01em;
  text-transform: uppercase;
  margin-bottom: .2em;
  color: var(--text);
  background: linear-gradient(180deg, #ffffff 0%, var(--cyan) 130%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.case-subtitle {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--text);
  margin-bottom: .8em;
}
.workflow-tag {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 0;
  font-family: var(--font-mono);
  font-size: .68rem;
  font-weight: 500;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 1em;
}
.workflow-tag span { display: inline-flex; align-items: center; }
.workflow-tag span:not(:last-child)::after {
  content: "›";
  color: var(--accent);
  margin: 0 .55em;
  font-size: .9rem;
}
.case-summary-text p { margin-bottom: 1em; }

.case-expand-label {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: .78rem;
  letter-spacing: .05em;
  text-transform: uppercase;
  color: var(--text);
}
.case-expand-label svg { transition: transform .2s ease; color: var(--accent); }
.label-close { display: none; }
.case-summary[aria-expanded="true"] .label-open { display: none; }
.case-summary[aria-expanded="true"] .label-close { display: inline; }
.case-summary[aria-expanded="true"] .case-expand-label svg { transform: rotate(180deg); }

.case-detail {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease;
}
.case-detail-inner {
  padding: 4px 24px 32px;
  border-top: 1px solid var(--border);
  margin: 0 24px;
}
.case-detail-inner h4 {
  display: flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: .78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .07em;
  color: var(--cyan);
  margin-top: 1.7em;
}
.case-detail-inner h4:first-child { margin-top: 1.7em; }
.step-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  margin-right: .7em;
  border: 1px solid var(--border-strong);
  color: var(--text-dim);
  font-weight: 500;
  font-size: .68rem;
  flex-shrink: 0;
}

.case-meta-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  margin: 24px 0 8px;
}
.case-meta-grid > div { background: var(--surface-2); padding: 14px 16px; }
.case-meta-grid h4 {
  margin-top: 0;
  font-family: var(--font-mono);
  font-size: .66rem;
  letter-spacing: .06em;
  color: var(--text-dim);
  display: block;
}
.case-meta-grid p { color: var(--text); margin: 0; font-size: .88rem; }

.case-outcomes { list-style: none; margin-top: .8em; }
.case-outcomes li {
  position: relative;
  padding-left: 24px;
  margin-bottom: .65em;
  color: var(--text);
  font-size: .95rem;
}
.case-outcomes li::before {
  content: "▸";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--accent);
  font-size: .85em;
}

.case-validated {
  margin-top: 1.4em;
  padding: 12px 16px;
  border: 1px solid var(--border-strong);
  background: var(--surface-2);
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .03em;
  color: var(--text-muted);
  display: flex;
  gap: 10px;
  align-items: baseline;
}
.case-validated strong { color: var(--accent); font-weight: 600; letter-spacing: .05em; }

/* ---------- Process ---------- */
.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
  list-style: none;
}
.process-steps li {
  background: var(--surface);
  border: 1px solid var(--border-strong);
  padding: 24px 20px;
  position: relative;
}
.process-steps li:not(:last-child)::after {
  content: "›";
  position: absolute;
  top: 50%;
  right: -22px;
  transform: translateY(-50%);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 1.1rem;
  z-index: 1;
}
.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border: 1px solid var(--border-strong);
  font-family: var(--font-mono);
  font-size: .82rem;
  color: var(--cyan);
  margin-bottom: .9em;
}
.process-steps h3 {
  font-size: 1.02rem;
  margin-bottom: .5em;
  text-transform: uppercase;
  letter-spacing: .01em;
}
.process-steps p { font-size: .9rem; margin-bottom: 0; }

/* ---------- About ---------- */
.about { border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.about-inner {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 48px;
  align-items: start;
}
.about-id-card {
  border: 1px solid var(--border-strong);
  background: var(--surface);
}
.about-id-card .id-photo {
  aspect-ratio: 1;
  background: var(--surface-2);
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}
.about-id-card .id-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 20%;
  filter: grayscale(.15) contrast(1.05);
}
.id-fields {
  padding: 16px 18px;
  font-family: var(--font-mono);
  font-size: .76rem;
}
.id-fields dl { display: grid; grid-template-columns: auto 1fr; gap: 6px 12px; margin: 0; }
.id-fields dt { color: var(--text-dim); text-transform: uppercase; letter-spacing: .04em; }
.id-fields dd { margin: 0; color: var(--text); text-align: right; }

.about-skills {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 28px;
}
.about-skills h4 {
  font-family: var(--font-mono);
  font-size: .74rem;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--cyan);
  margin-bottom: .6em;
}
.about-skills p { font-size: .88rem; margin: 0; }

/* ---------- Contact ---------- */
.contact-inner { max-width: 680px; text-align: left; }
.contact-links {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 24px;
}

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 24px 0;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .02em;
  color: var(--text-dim);
}
.footer-inner a { text-decoration: none; }
.footer-inner a:hover { color: var(--cyan); }

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .about-inner { grid-template-columns: 1fr; }
  .about-id-card { max-width: 240px; }
  .about-skills { grid-template-columns: 1fr 1fr; }
  .process-steps { grid-template-columns: 1fr 1fr; gap: 32px 22px; }
  .process-steps li:nth-child(2)::after { display: none; }
  .case-summary { grid-template-columns: 1fr; }
  .case-media { max-width: 320px; }
}

@media (max-width: 640px) {
  .main-nav { display: none; }
  .nav-toggle { display: flex; }
  .site-header.nav-open .main-nav {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    padding: 12px 24px 20px;
    gap: 4px;
  }
  .hero { padding: 52px 0 48px; }
  .hero-inner { padding: 24px; }
  .hero-stats { grid-template-columns: 1fr; }
  section { padding: 56px 0; }
  .process-steps { grid-template-columns: 1fr; }
  .process-steps li::after { display: none; }
  .about-skills { grid-template-columns: 1fr; }
  .case-meta-grid { grid-template-columns: 1fr 1fr; }
  .footer-inner { flex-direction: column; gap: 8px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
}