/* ==========================================================================
   redesign.css — "The Design Canvas"
   A bold, expressive identity for Vivek Singh, Product Designer.
   Concept: the portfolio as an annotated design artboard.
   Palette : artboard gray canvas · ink black · one hot vermilion marker
   Type    : Bricolage Grotesque (display) · Space Mono (labels) · Inter (body)
   ========================================================================== */

/* --------------------------------------------------------------------------
   0. TOKENS
   -------------------------------------------------------------------------- */
:root {
  /* Color */
  --canvas: #e8e8e4;
  /* warm artboard gray */
  --paper: #ffffff;
  /* cards / surfaces */
  --ink: #17150f;
  /* near-black text & lines */
  --muted: #74726a;
  /* secondary text */
  --marker: #ff3d23;
  /* hot vermilion — the red pen */
  --marker-ink: #d9310f;
  /* deeper red for small text (contrast) */
  --line: rgba(23, 21, 15, 0.14);
  /* hairlines / grid */
  --line-strong: rgba(23, 21, 15, 0.28);

  /* Type */
  --font-display: 'Bricolage Grotesque', 'Arial Black', sans-serif;
  --font-mono: 'Space Mono', ui-monospace, 'SFMono-Regular', monospace;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;

  /* Metrics */
  --max: 1120px;
  --nav-h: 68px;
  --radius: 4px;

  /* Motion */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* --------------------------------------------------------------------------
   0b. CUSTOM CURSOR — vermilion arrow (mouse_pointer.svg)
   Uses cursor.svg (20×22 px) derived from the original mouse_pointer.svg.
   -------------------------------------------------------------------------- */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  /* Default arrow cursor — vermilion triangle */
  cursor: url('../images/cursor.svg') 0 0, auto;
}

/* Pointer cursor for interactive elements */
a,
button,
[role="button"],
input[type="submit"],
input[type="button"],
input[type="reset"],
select,
label[for],
.btn,
[onclick] {
  cursor: url('../images/cursor.svg') 0 0, pointer;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  scroll-padding-top: calc(var(--nav-h) + 3rem);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  color: var(--ink);
  background-color: var(--canvas);
  /* Figma-style dot grid on the artboard */
  background-image: radial-gradient(var(--line) 1px, transparent 1px);
  background-size: 28px 28px;
  background-position: -1px -1px;
  line-height: 1.55;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

button {
  background: none;
  border: none;
  cursor: pointer;
  font: inherit;
  color: inherit;
}

img {
  display: block;
  max-width: 100%;
}

::selection {
  background: var(--marker);
  color: #fff;
}

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

/* --------------------------------------------------------------------------
   1. LAYOUT PRIMITIVES
   -------------------------------------------------------------------------- */
.wrap {
  width: 100%;
  max-width: var(--max);
  margin-inline: auto;
  padding-inline: 1.75rem;
}

.section {
  padding-block: clamp(4rem, 10vw, 8rem);
  position: relative;
}

/* Mono eyebrow / section label used across the site */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}

.eyebrow::before {
  content: '';
  width: 7px;
  height: 7px;
  background: var(--marker);
  border-radius: 50%;
  flex: none;
}

/* Big serif-free display heading */
.display {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 0.98;
  letter-spacing: -0.035em;
}

/* Vermilion marker highlight on a single word */
.mark {
  position: relative;
  white-space: nowrap;
}

.mark::after {
  content: '';
  position: absolute;
  left: -0.04em;
  right: -0.04em;
  bottom: 0.06em;
  height: 0.16em;
  background: var(--marker);
  transform: rotate(-1.2deg);
  transform-origin: left center;
  z-index: -1;
  border-radius: 2px;
}

/* --------------------------------------------------------------------------
   2. BUTTONS
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  padding: 0.85rem 1.5rem;
  border-radius: var(--radius);
  border: 1.5px solid var(--ink);
  transition: transform 0.18s var(--ease), background-color 0.18s var(--ease),
    color 0.18s var(--ease), box-shadow 0.18s var(--ease);
}

.btn--solid {
  background: var(--ink);
  color: var(--canvas);
  box-shadow: 4px 4px 0 rgba(23, 21, 15, 0.9);
}

.btn--solid:hover {
  background: var(--marker);
  border-color: var(--marker);
  box-shadow: 4px 4px 0 var(--marker-ink);
  transform: translate(-2px, -2px);
}

.btn--ghost {
  background: transparent;
  color: var(--ink);
}

.btn--ghost:hover {
  background: var(--ink);
  color: var(--canvas);
  transform: translate(-2px, -2px);
  box-shadow: 4px 4px 0 rgba(23, 21, 15, 0.25);
}

/* --------------------------------------------------------------------------
   3. NAV
   -------------------------------------------------------------------------- */
.nav {
  position: fixed;
  top: 1rem;
  left: 0;
  right: 0;
  z-index: 100;
  /* gutter from the viewport edges for the floating bar */
  padding-inline: 1rem;
}

.nav__inner {
  max-width: var(--max);
  margin-inline: auto;
  height: var(--nav-h);
  padding-inline: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(255, 255, 255, 0.72);
  border: 1.5px solid var(--ink);
  border-radius: var(--radius);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 4px 4px 0 rgba(23, 21, 15, 0.12);
  transition: box-shadow 0.2s var(--ease), transform 0.2s var(--ease);
}

.nav.scrolled .nav__inner {
  box-shadow: 4px 4px 0 rgba(23, 21, 15, 0.22);
}

.nav__logo {
  display: inline-flex;
  align-items: baseline;
  gap: 0.1em;
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 800;
  letter-spacing: -0.04em;
}

.nav__logo b {
  color: var(--marker);
  font-weight: 800;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav__link {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
  position: relative;
  padding: 0.4rem 0;
  transition: color 0.18s var(--ease);
}

.nav__link:hover,
.nav__link.active {
  color: var(--ink);
}

.nav__link.active::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 3px;
  background: var(--marker);
  transform: rotate(-1deg);
}

.nav__resume {
  padding: 0.6rem 1.1rem;
}

.nav__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
}

.nav__hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--ink);
  transition: transform 0.25s var(--ease), opacity 0.2s var(--ease);
}

.nav__hamburger.is-open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav__hamburger.is-open span:nth-child(2) {
  opacity: 0;
}

.nav__hamburger.is-open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.nav__mobile {
  display: none;
}

/* --------------------------------------------------------------------------
   4. HERO
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  padding-top: calc(var(--nav-h) + 5rem);
  padding-bottom: clamp(3rem, 8vw, 6rem);
}

.hero__grid-frame {
  /* a subtle artboard "frame" label in the corner */
  position: absolute;
  top: calc(var(--nav-h) + 2rem);
  right: 1.75rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--muted);
  letter-spacing: 0.1em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.hero__grid-frame::before {
  content: '';
  width: 34px;
  height: 1px;
  background: var(--line-strong);
}

.hero__eyebrow {
  margin-bottom: 1.6rem;
}

.hero__headline {
  font-size: clamp(2.7rem, 8.2vw, 6rem);
  max-width: 15ch;
  margin-bottom: 2rem;
}

.hero__headline .light {
  color: var(--muted);
  font-weight: 600;
}

.hero__sub {
  font-size: clamp(1rem, 1.6vw, 1.15rem);
  color: var(--ink);
  max-width: 46ch;
  margin-bottom: 2.5rem;
  line-height: 1.6;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-bottom: 3rem;
}

/* Status line, set like a spec annotation */
.hero__status {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--muted);
  padding: 0.55rem 0.9rem;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.5);
}

.hero__status .dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: #17b26a;
  box-shadow: 0 0 0 0 rgba(23, 178, 106, 0.6);
  animation: pulse 2.4s infinite;
}

@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(23, 178, 106, 0.5);
  }

  70% {
    box-shadow: 0 0 0 8px rgba(23, 178, 106, 0);
  }

  100% {
    box-shadow: 0 0 0 0 rgba(23, 178, 106, 0);
  }
}

/* --- Decorative annotation layer (desktop only) --- */
.annotate {
  position: absolute;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--marker-ink);
  letter-spacing: 0.02em;
  pointer-events: none;
  z-index: 5;
}

.annotate__line {
  stroke: var(--marker);
  stroke-width: 1.5;
  stroke-dasharray: 4 3;
  fill: none;
}

/* Figma-style multiplayer cursor tag */
.cursor-tag {
  position: absolute;
  z-index: 6;
  display: flex;
  align-items: flex-start;
  gap: 2px;
  pointer-events: none;
}

.cursor-tag svg {
  width: 22px;
  height: 22px;
  filter: drop-shadow(0 1px 1px rgba(0, 0, 0, 0.25));
}

.cursor-tag span {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  color: #fff;
  background: var(--marker);
  padding: 2px 8px;
  border-radius: 4px 4px 4px 0;
  white-space: nowrap;
  transform: translateY(14px);
}

/* --------------------------------------------------------------------------
   5. WORK
   -------------------------------------------------------------------------- */
.work__head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.work__title {
  font-size: clamp(1.8rem, 4vw, 2.75rem);
  margin-top: 0.75rem;
}

.work__viewall {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--muted);
  border-bottom: 2px solid transparent;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
  white-space: nowrap;
}

.work__viewall:hover {
  color: var(--ink);
  border-color: var(--marker);
}

.work__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.75rem;
}

.case {
  position: relative;
  display: block;
  background: var(--paper);
  border: 1.5px solid var(--ink);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.22s var(--ease), box-shadow 0.22s var(--ease);
}

.case:hover {
  transform: translate(-4px, -4px);
  box-shadow: 8px 8px 0 var(--ink);
}

.case__media {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--canvas);
  border-bottom: 1.5px solid var(--ink);
}

.case__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s var(--ease);
}

.case:hover .case__media img {
  transform: scale(1.04);
}

/* selection-outline + dimension tag on hover, like selecting a layer */
.case__select {
  position: absolute;
  inset: 10px;
  border: 1.5px solid var(--marker);
  opacity: 0;
  transition: opacity 0.2s var(--ease);
  pointer-events: none;
}

.case__select::before {
  content: attr(data-dim);
  position: absolute;
  top: -10px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--marker);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 700;
  padding: 1px 7px;
  border-radius: 3px;
  white-space: nowrap;
}

.case:hover .case__select {
  opacity: 1;
}

.case__body {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.4rem 1.5rem;
}

.case__index {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--muted);
  margin-bottom: 0.35rem;
  letter-spacing: 0.08em;
}

.case__name {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.case__meta {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--muted);
  margin-top: 0.25rem;
}

.case__arrow {
  flex: none;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border: 1.5px solid var(--ink);
  border-radius: 50%;
  transition: background-color 0.2s var(--ease), color 0.2s var(--ease),
    transform 0.2s var(--ease);
}

.case:hover .case__arrow {
  background: var(--marker);
  border-color: var(--marker);
  color: #fff;
  transform: rotate(-45deg);
}

/* --------------------------------------------------------------------------
   6. ABOUT
   -------------------------------------------------------------------------- */
.about {
  border-top: 1.5px solid var(--ink);
}

.about__inner {
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  gap: clamp(2rem, 6vw, 5rem);
  align-items: center;
}

.about__title {
  font-size: clamp(2rem, 5vw, 3.25rem);
  margin: 1rem 0 1.5rem;
}

.about__bio {
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--ink);
  max-width: 52ch;
  margin-bottom: 1.25rem;
}

.about__bio strong {
  font-weight: 600;
  background: linear-gradient(transparent 62%, rgba(255, 61, 35, 0.28) 62%);
}

.about__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 2rem;
}

/* Photo pinned to the artboard with a spec tag */
.about__photo {
  position: relative;
  justify-self: center;
}

.about__photo img {
  width: 100%;
  max-width: 320px;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  border: 1.5px solid var(--ink);
  border-radius: var(--radius);
  box-shadow: 8px 8px 0 var(--ink);
}

.about__tag {
  position: absolute;
  bottom: -14px;
  left: -14px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  color: #fff;
  background: var(--marker);
  padding: 4px 10px;
  border-radius: 4px;
  box-shadow: 3px 3px 0 var(--marker-ink);
}

/* --------------------------------------------------------------------------
   7. WRITING
   -------------------------------------------------------------------------- */
.writing {
  border-top: 1.5px solid var(--ink);
}

.writing__head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.writing__title {
  font-size: clamp(1.8rem, 4vw, 2.75rem);
  margin-top: 0.75rem;
}

.post {
  display: grid;
  grid-template-columns: 120px 1fr auto;
  gap: 1.5rem;
  align-items: baseline;
  padding: 1.6rem 0.5rem;
  border-top: 1px solid var(--line);
  transition: padding-left 0.2s var(--ease), background-color 0.2s var(--ease);
}

.post:last-child {
  border-bottom: 1px solid var(--line);
}

.post:hover {
  padding-left: 1.25rem;
  background: rgba(255, 255, 255, 0.45);
}

.post__date {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--muted);
  letter-spacing: 0.04em;
}

.post__title {
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 2.4vw, 1.5rem);
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.25;
}

.post:hover .post__title {
  color: var(--marker-ink);
}

.post__go {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: var(--muted);
  transition: transform 0.2s var(--ease), color 0.2s var(--ease);
}

.post:hover .post__go {
  color: var(--marker);
  transform: translateX(4px);
}

/* --------------------------------------------------------------------------
   8. FOOTER (contact)
   -------------------------------------------------------------------------- */
.footer {
  border-top: 1.5px solid var(--ink);
  background: var(--ink);
  color: var(--canvas);
  background-image: radial-gradient(rgba(255, 255, 255, 0.06) 1px, transparent 1px);
  background-size: 28px 28px;
}

.footer .eyebrow {
  color: rgba(255, 255, 255, 0.6);
}

.footer__cta {
  font-size: clamp(2.4rem, 8vw, 5.5rem);
  color: var(--canvas);
  margin: 1.25rem 0 2rem;
  max-width: 16ch;
}

.footer__cta a {
  color: var(--marker);
  position: relative;
}

.footer__cta a:hover {
  text-decoration: underline;
  text-decoration-thickness: 3px;
  text-underline-offset: 6px;
}

.footer__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding-top: 2.5rem;
  margin-top: 3rem;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
}

.footer__socials {
  display: flex;
  gap: 0.75rem;
}

.footer__socials a {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 50%;
  color: rgba(255, 255, 255, 0.7);
  transition: all 0.18s var(--ease);
}

.footer__socials a:hover {
  background: var(--marker);
  border-color: var(--marker);
  color: #fff;
  transform: translateY(-3px);
}

.footer__meta {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.45);
  letter-spacing: 0.03em;
}

/* --------------------------------------------------------------------------
   9. MODAL + FORM
   -------------------------------------------------------------------------- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(23, 21, 15, 0.55);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  z-index: 1000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.28s var(--ease);
}

.modal-overlay.is-active {
  opacity: 1;
  pointer-events: auto;
}

.modal {
  width: 100%;
  max-width: 460px;
  background: var(--paper);
  border: 1.5px solid var(--ink);
  border-radius: var(--radius);
  box-shadow: 10px 10px 0 var(--ink);
  padding: 2rem;
  transform: translateY(16px);
  transition: transform 0.28s var(--ease);
}

.modal-overlay.is-active .modal {
  transform: translateY(0);
}

.modal__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 1.75rem;
}

.modal__title {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.modal__sub {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--muted);
  margin-top: 0.25rem;
}

.modal__close {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border: 1.5px solid var(--ink);
  border-radius: var(--radius);
  transition: background-color 0.18s var(--ease), color 0.18s var(--ease);
}

.modal__close:hover {
  background: var(--marker);
  border-color: var(--marker);
  color: #fff;
}

.field {
  margin-bottom: 1.25rem;
}

.field label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.5rem;
}

.field input,
.field textarea {
  width: 100%;
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--ink);
  background: var(--canvas);
  border: 1.5px solid var(--ink);
  border-radius: var(--radius);
  padding: 0.75rem 0.9rem;
  transition: box-shadow 0.18s var(--ease);
}

.field input:focus,
.field textarea:focus {
  outline: none;
  box-shadow: 3px 3px 0 var(--marker);
}

.field textarea {
  resize: vertical;
  min-height: 120px;
}

/* --------------------------------------------------------------------------
   10. SCROLL REVEAL + INTRO
   -------------------------------------------------------------------------- */
/* Hidden initial states apply ONLY when JS is confirmed (html.js).
   No-JS or JS-error → everything stays visible. */
html.js .reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

/* Must outrank `html.js .reveal` (0,0,2,1) on specificity, or revealed
   content stays hidden. */
html.js .reveal.is-in {
  opacity: 1;
  transform: none;
}

/* Hero load orchestration (JS adds .ready to body) */
html.js .hero__eyebrow,
html.js .hero__headline,
html.js .hero__sub,
html.js .hero__actions,
html.js .hero__status {
  opacity: 0;
  transform: translateY(18px);
}

body.ready .hero__eyebrow,
body.ready .hero__headline,
body.ready .hero__sub,
body.ready .hero__actions,
body.ready .hero__status {
  opacity: 1;
  transform: none;
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

body.ready .hero__headline {
  transition-delay: 0.08s;
}

body.ready .hero__sub {
  transition-delay: 0.18s;
}

body.ready .hero__actions {
  transition-delay: 0.28s;
}

body.ready .hero__status {
  transition-delay: 0.36s;
}

.annotate,
.cursor-tag {
  transition: opacity 0.6s var(--ease) 0.5s;
}

html.js .annotate,
html.js .cursor-tag {
  opacity: 0;
}

body.ready .annotate,
body.ready .cursor-tag {
  opacity: 1;
}

.annotate__line {
  stroke-dashoffset: 120;
  transition: stroke-dashoffset 0.9s var(--ease) 0.55s;
}

body.ready .annotate__line {
  stroke-dashoffset: 0;
}

/* --------------------------------------------------------------------------
   11. RESPONSIVE
   -------------------------------------------------------------------------- */
@media (max-width: 860px) {
  .nav__links {
    display: none;
  }

  .nav__hamburger {
    display: flex;
  }

  .nav__mobile {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    max-width: var(--max);
    margin: 0.5rem 0 0;
    padding: 0;
    max-height: 0;
    overflow: hidden;
    background: rgba(255, 255, 255, 0.95);
    border: 1.5px solid transparent;
    border-radius: var(--radius);
    backdrop-filter: blur(12px);
    transition: max-height 0.3s var(--ease), padding 0.3s var(--ease),
      border-color 0.3s var(--ease);
  }

  .nav__mobile.is-open {
    max-height: 340px;
    padding: 0.75rem;
    border-color: var(--ink);
    box-shadow: 4px 4px 0 rgba(23, 21, 15, 0.12);
  }

  .nav__mobile a {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.03em;
    padding: 0.85rem 0.75rem;
    border-radius: var(--radius);
  }

  .nav__mobile a:hover {
    background: var(--canvas);
  }

  .nav__mobile .btn {
    margin-top: 0.5rem;
  }

  /* Hide decorative annotations on small screens */
  .annotate,
  .cursor-tag,
  .hero__grid-frame {
    display: none;
  }

  .work__grid {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

  .about__inner {
    grid-template-columns: 1fr;
    text-align: left;
  }

  .about__photo {
    justify-self: start;
    margin-top: 1rem;
  }

  .post {
    grid-template-columns: 1fr auto;
    gap: 0.5rem 1rem;
  }

  .post__date {
    grid-column: 1 / -1;
    order: -1;
  }
}

@media (max-width: 480px) {
  .wrap {
    padding-inline: 1.25rem;
  }

  .nav {
    padding-inline: 0.75rem;
  }

  .btn {
    flex: 1;
  }
}

/* --------------------------------------------------------------------------
   12. REDUCED MOTION
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }

  .hero__eyebrow,
  .hero__headline,
  .hero__sub,
  .hero__actions,
  .hero__status,
  .annotate,
  .cursor-tag {
    opacity: 1;
    transform: none;
  }

  .annotate__line {
    stroke-dashoffset: 0;
  }
}

/* ==========================================================================
   13. SUB-PAGE CONTENT — full-site migration to the Design Canvas identity
   Shared by: work.html (all projects), blog.html (writing list),
   dsen_cs.html / irctc_cs.html (case studies), blog-1..3 + from-brief post.
   ========================================================================== */

:root {
  /* Alias so legacy inline paddings calc(var(--nav-height) + …) still resolve */
  --nav-height: var(--nav-h);
  /* Map the old per-post "series" palette onto the canvas identity */
  --series-bg: var(--canvas);
  --series-ink: var(--ink);
  --series-accent: var(--marker-ink);
  --series-accent-light: rgba(255, 61, 35, 0.12);
  --series-muted: var(--muted);
  --series-border: var(--line);
}

/* Legacy .container behaves like .wrap (content column) */
.container {
  width: 100%;
  max-width: var(--max);
  margin-inline: auto;
  padding-inline: 1.75rem;
}

/* ---- Shared page header (list pages) ---- */
.page-head {
  padding-top: calc(var(--nav-h) + 4.5rem);
  padding-bottom: 1rem;
}

.page-head__title {
  font-size: clamp(2.5rem, 7vw, 4.5rem);
  margin: 0.9rem 0 1rem;
}

.page-head__sub {
  font-size: clamp(1rem, 1.6vw, 1.15rem);
  color: var(--muted);
  max-width: 54ch;
}

/* ---- Back link (articles + case studies) ---- */
.back-link,
.case-hero__back {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 2rem;
  transition: color 0.18s var(--ease), gap 0.18s var(--ease);
}

.back-link:hover,
.case-hero__back:hover {
  color: var(--marker-ink);
  gap: 0.75rem;
}

/* --------------------------------------------------------------------------
   BLOG LIST (blog.html)
   -------------------------------------------------------------------------- */
.article-list {
  border-top: 1.5px solid var(--ink);
}

.article-row {
  display: grid;
  grid-template-columns: 132px 1fr auto;
  gap: 1.5rem;
  padding: 2rem 0.5rem;
  border-bottom: 1px solid var(--line);
  transition: padding-left 0.2s var(--ease), background-color 0.2s var(--ease);
}

.article-row:hover {
  padding-left: 1.25rem;
  background: rgba(255, 255, 255, 0.5);
}

.article-row__date {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--muted);
  letter-spacing: 0.03em;
  padding-top: 0.35rem;
}

.article-row__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.25rem, 2.6vw, 1.65rem);
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: 0.5rem;
}

.article-row:hover .article-row__title {
  color: var(--marker-ink);
}

.article-row__desc {
  color: var(--muted);
  font-size: 0.98rem;
  line-height: 1.6;
  max-width: 62ch;
}

.article-row__go {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  color: var(--muted);
  align-self: center;
  transition: transform 0.2s var(--ease), color 0.2s var(--ease);
}

.article-row:hover .article-row__go {
  color: var(--marker);
  transform: translateX(4px);
}

/* --------------------------------------------------------------------------
   ARTICLE / BLOG POST (blog-1..3)
   -------------------------------------------------------------------------- */
.post-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--muted);
  letter-spacing: 0.03em;
  margin-bottom: 1.1rem;
}

/* Legacy article title element */
.hero__name {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.05;
}

.post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.25rem;
}

.post-tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
  border: 1px solid var(--line-strong);
  padding: 4px 10px;
  border-radius: 999px;
}

/* Prose body shared by .post-body (standard posts) and .ftb-body (series post) */
.post-body,
.ftb-body {
  max-width: 720px;
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--ink);
}

.post-body>p,
.ftb-body>p {
  margin-bottom: 1.6rem;
}

.post-body h2,
.ftb-body h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.5rem, 3.5vw, 2rem);
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin: 3rem 0 1.1rem;
}

.post-body h3,
.ftb-body h3 {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--marker-ink);
  margin: 2.25rem 0 0.85rem;
}

.post-body ul,
.post-body ol,
.ftb-body ul,
.ftb-body ol {
  margin: 0 0 1.6rem;
  padding-left: 1.35rem;
}

.post-body li,
.ftb-body li {
  margin-bottom: 0.5rem;
  padding-left: 0.3rem;
}

.post-body ul li::marker,
.ftb-body ul li::marker {
  color: var(--marker);
}

.post-body ol li::marker,
.ftb-body ol li::marker {
  color: var(--marker-ink);
  font-family: var(--font-mono);
  font-weight: 700;
}

.post-body strong,
.ftb-body strong {
  font-weight: 600;
}

.post-body em,
.ftb-body em {
  font-style: italic;
}

.post-body a,
.ftb-body a {
  color: var(--marker-ink);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 2px;
}

.post-body blockquote {
  margin: 2.25rem 0;
  padding: 1.1rem 1.5rem;
  border-left: 4px solid var(--marker);
  background: rgba(255, 255, 255, 0.55);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.2rem;
  line-height: 1.5;
  letter-spacing: -0.01em;
}

.post-body blockquote strong {
  font-weight: 800;
}

.post-body hr {
  border: none;
  border-top: 1px solid var(--line);
  margin: 2.5rem 0;
}

/* --------------------------------------------------------------------------
   CASE STUDY (dsen_cs.html, irctc_cs.html)
   -------------------------------------------------------------------------- */
.case-hero {
  padding-top: calc(var(--nav-h) + 3.5rem);
}

.hero__badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--marker-ink);
  background: rgba(255, 61, 35, 0.12);
  border: 1px solid var(--marker);
  padding: 5px 12px;
  border-radius: 999px;
  margin-bottom: 1.25rem;
}

.case-hero__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.75rem, 9vw, 5.5rem);
  letter-spacing: -0.04em;
  line-height: 0.98;
  margin-bottom: 1.25rem;
}

.case-hero__summary {
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  color: var(--ink);
  max-width: 60ch;
  line-height: 1.6;
  margin-bottom: 1.75rem;
}

.case-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.4rem;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--muted);
  margin-bottom: 2.5rem;
}

.case-hero__meta span {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.case-hero__meta span::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--marker);
  border-radius: 50%;
  flex: none;
}

.cs-overview {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  margin-top: 2rem;
  padding-top: 1.75rem;
  border-top: 3px solid var(--ink);
}

.cs-overview__item {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.cs-overview__label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

.cs-overview__value {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--ink);
}

/* Alternating band = white artboard panel with hairline borders */
.cs-alt-bg {
  background: var(--paper);
  border-top: 1.5px solid var(--ink);
  border-bottom: 1.5px solid var(--ink);
}

.cs-section-label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--marker-ink);
  margin-bottom: 0.75rem;
}

.cs-section-label::before {
  content: '';
  width: 18px;
  height: 2px;
  background: var(--marker);
}

.section-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.6rem, 4vw, 2.5rem);
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin-bottom: 1.25rem;
}

.cs-subheading {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.4rem;
  letter-spacing: -0.02em;
}

.cs-body {
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--ink);
  margin-bottom: 1.1rem;
  max-width: 68ch;
}

.cs-body strong {
  font-weight: 600;
}

.cs-two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}

.cs-persona-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.75rem;
}

.cs-persona {
  background: var(--paper);
  border: 1.5px solid var(--ink);
  border-radius: var(--radius);
  padding: 1.5rem;
}

.cs-alt-bg .cs-persona {
  background: var(--canvas);
}

.cs-persona img {
  margin-bottom: 1rem;
}

.cs-persona__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.3rem;
  margin-bottom: 0.35rem;
}

.cs-persona__role {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--muted);
  margin-bottom: 0.9rem;
}

.cs-solution {
  margin-top: 1rem;
}

.cs-decision {
  margin-top: 3.5rem;
}

.cs-decision:first-of-type {
  margin-top: 2rem;
}

.cs-decision__header {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.cs-decision__number {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--marker);
}

.cs-decision__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.3rem, 3vw, 1.8rem);
  letter-spacing: -0.02em;
}

.cs-decision__body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: start;
}

.cs-decision__text .cs-body {
  max-width: none;
}

.cs-conclusion-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 1rem;
}

.cs-conclusion-card {
  background: var(--paper);
  border: 1.5px solid var(--ink);
  border-radius: var(--radius);
  padding: 1.75rem;
}

.cs-alt-bg .cs-conclusion-card {
  background: var(--canvas);
}

.cs-conclusion-card__icon {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border: 1.5px solid var(--ink);
  border-radius: var(--radius);
  color: var(--marker);
  margin-bottom: 1rem;
}

.cs-conclusion-card__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  margin-bottom: 0.75rem;
  line-height: 1.25;
}

.cs-conclusion-card__list {
  padding-left: 1.15rem;
}

.cs-conclusion-card__list li {
  margin-bottom: 0.6rem;
  font-size: 0.95rem;
  line-height: 1.55;
}

.cs-conclusion-card__list li::marker {
  color: var(--marker);
}

.cs-pullquote {
  border-left: 4px solid var(--marker);
  padding: 1.25rem 1.75rem;
  margin: 2.5rem 0;
  background: rgba(255, 255, 255, 0.6);
  border-radius: 0 var(--radius) var(--radius) 0;
}

.cs-pullquote p {
  font-family: var(--font-display);
  font-weight: 600;
  font-style: normal;
  font-size: 1.25rem;
  line-height: 1.5;
  margin: 0;
  color: var(--ink);
}

/* Case-study content images get the artboard frame */
.page-case-study .container img {
  border: 1.5px solid var(--ink);
}

/* Closing — dark artboard band */
.cs-closing {
  background: var(--ink);
  color: var(--canvas);
  background-image: radial-gradient(rgba(255, 255, 255, 0.06) 1px, transparent 1px);
  background-size: 28px 28px;
  border-top: 1.5px solid var(--ink);
}

.cs-closing__label,
.cs-closing .cs-section-label {
  color: var(--marker);
}

.cs-closing__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 5vw, 3rem);
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
  color: var(--canvas);
}

.cs-closing__body {
  color: rgba(255, 255, 255, 0.8);
  max-width: 68ch;
  margin-bottom: 2rem;
}

.btn-outline,
.cs-closing__cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  padding: 0.85rem 1.5rem;
  border: 1.5px solid var(--canvas);
  border-radius: var(--radius);
  color: var(--canvas);
  transition: background-color 0.18s var(--ease), color 0.18s var(--ease),
    transform 0.18s var(--ease);
}

.btn-outline:hover,
.cs-closing__cta:hover {
  background: var(--marker);
  border-color: var(--marker);
  color: #fff;
  transform: translate(-2px, -2px);
}

/* Case-study TOC (desktop ≥1440px) */
.cs-toc {
  display: none;
}

@media (min-width: 1440px) {
  .cs-toc {
    display: block;
    position: fixed;
    top: 50%;
    transform: translateY(-50%);
    right: 1.75rem;
    width: 150px;
    z-index: 50;
  }

  .cs-toc__heading {
    font-family: var(--font-mono);
    font-size: 0.66rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--muted);
    margin: 0 0 0.75rem 0.6rem;
  }

  .cs-toc__list {
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
  }

  .cs-toc__link {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--muted);
    display: block;
    padding: 0.3rem 0.6rem;
    border-left: 2px solid transparent;
    transition: color 0.2s, border-color 0.2s;
    line-height: 1.35;
  }

  .cs-toc__link:hover {
    color: var(--ink);
  }

  .cs-toc__link.is-active {
    color: var(--marker-ink);
    border-left-color: var(--marker);
    font-weight: 700;
  }
}

/* --------------------------------------------------------------------------
   "FROM BRIEF TO BUILD" SERIES POST (from-brief-to-build-01.html)
   -------------------------------------------------------------------------- */
.series-bar {
  background: var(--ink);
  color: var(--canvas);
  padding: 0.6rem 0;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.series-bar span {
  color: var(--marker);
  margin: 0 0.5rem;
}

.ftb-header {
  padding-top: calc(var(--nav-h) + 4rem);
  padding-bottom: 0;
}

.ftb-header .container,
.ftb-body-section .container {
  max-width: 760px;
}

.episode-label {
  display: inline-block;
  background: rgba(255, 61, 35, 0.12);
  color: var(--marker-ink);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 5px 12px;
  border-radius: 999px;
  margin-bottom: 1.25rem;
}

.ftb-title {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.03em;
  font-size: clamp(2.2rem, 6vw, 3.4rem);
  line-height: 1.02;
  margin: 0 0 1.5rem;
}

.ftb-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--muted);
  margin-bottom: 1.5rem;
}

.ftb-meta-dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--marker);
  display: inline-block;
}

.ftb-tags {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

.ftb-tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--muted);
  border: 1px solid var(--line-strong);
  padding: 4px 10px;
  border-radius: 999px;
}

.ftb-divider {
  border: none;
  border-top: 1.5px solid var(--ink);
  margin: 0;
}

.ftb-body-section {
  padding: 3rem 0 5rem;
}

.ftb-pull {
  font-family: var(--font-display);
  font-weight: 600;
  font-style: normal;
  font-size: 1.3rem;
  line-height: 1.45;
  color: var(--marker-ink);
  border-left: 4px solid var(--marker);
  padding: 0.5rem 0 0.5rem 1.5rem;
  margin: 2.5rem 0;
}

.scope-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin: 1.5rem 0 2rem;
}

.scope-card {
  background: var(--paper);
  border: 1.5px solid var(--ink);
  border-radius: var(--radius);
  padding: 1.25rem;
}

.scope-card-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--marker-ink);
  margin-bottom: 0.75rem;
}

.scope-card ul {
  margin: 0;
  padding-left: 1.1rem;
  font-size: 0.92rem;
  line-height: 1.7;
}

.scope-card ul li {
  margin-bottom: 0.35rem;
}

.scope-card ul li::marker {
  color: var(--marker);
}

.screens-list {
  list-style: none;
  padding: 0;
  margin: 1.25rem 0 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.screens-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.9rem;
  font-size: 1rem;
  line-height: 1.5;
}

.screens-list li .num {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 700;
  color: var(--marker);
  min-width: 24px;
}

.next-up {
  background: var(--ink);
  border: 1.5px solid var(--ink);
  border-radius: var(--radius);
  padding: 1.75rem 2rem;
  margin-top: 3.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
  box-shadow: 6px 6px 0 rgba(23, 21, 15, 0.15);
}

.next-up-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--marker);
  margin-bottom: 0.4rem;
}

.next-up-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--canvas);
}

.next-up-desc {
  font-family: var(--font-body);
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.6);
  margin-top: 0.3rem;
}

/* --------------------------------------------------------------------------
   SUB-PAGE RESPONSIVE
   -------------------------------------------------------------------------- */
@media (max-width: 860px) {

  .cs-two-col,
  .cs-persona-grid,
  .cs-decision__body {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .cs-conclusion-grid {
    grid-template-columns: 1fr;
  }

  .cs-overview {
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
  }
}

@media (max-width: 640px) {
  .article-row {
    grid-template-columns: 1fr auto;
    gap: 0.4rem 1rem;
  }

  .article-row__date {
    grid-column: 1 / -1;
    order: -1;
    padding-top: 0;
  }

  .scope-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .cs-overview {
    grid-template-columns: 1fr;
  }

  .container {
    padding-inline: 1.25rem;
  }
}

/* ---- Image lightbox (case-study pages) ---- */
.page-case-study .container img {
  cursor: zoom-in;
}

.lightbox-overlay {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(23, 21, 15, 0.92);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s var(--ease), visibility 0.25s var(--ease);
  cursor: zoom-out;
}

.lightbox-overlay.is-open {
  opacity: 1;
  visibility: visible;
}

.lightbox-overlay img {
  max-width: 100%;
  max-height: 90vh;
  border: 1.5px solid var(--marker);
  border-radius: var(--radius);
  box-shadow: 0 32px 80px rgba(0, 0, 0, 0.6);
  transform: scale(0.94);
  transition: transform 0.25s var(--ease);
  cursor: default;
  object-fit: contain;
}

.lightbox-overlay.is-open img {
  transform: scale(1);
}

@media (max-width: 767px) {
  .case-hero {
    padding-top: calc(var(--nav-h) + 3rem);
  }

  .cs-toc {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {

  .article-row,
  .article-row__go,
  .back-link,
  .lightbox-overlay,
  .lightbox-overlay img {
    transition: none;
  }
}

/* --------------------------------------------------------------------------
   Case Study Components (Placeholders, Systems, Evolution & Scorecards)
   -------------------------------------------------------------------------- */
.case-hero__live-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--ink);
  background: var(--paper);
  padding: 0.35rem 0.75rem;
  border: 1.2px solid var(--ink);
  border-radius: 999px;
  box-shadow: 2px 2px 0 var(--ink);
  text-decoration: none;
  transition: all 0.16s var(--ease);
  white-space: nowrap;
}

.case-hero__live-pill:hover {
  background: var(--marker);
  color: #fff;
  border-color: var(--marker);
  box-shadow: 2px 2px 0 var(--marker-ink);
  transform: translate(-1px, -1px);
}

.ledger-placeholder {
  border: 2px dashed var(--ink);
  background: rgba(0, 0, 0, 0.03);
  border-radius: var(--radius);
  padding: 2.5rem 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 0.75rem;
  min-height: 220px;
  position: relative;
  transition: all 0.2s ease;
}

.ledger-placeholder:hover {
  background: rgba(255, 61, 35, 0.04);
  border-color: var(--marker);
}

.ledger-placeholder__icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: var(--paper);
  border: 1.5px solid var(--ink);
  display: grid;
  place-items: center;
  color: var(--marker);
}

.ledger-placeholder__tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--marker-ink);
  background: rgba(255, 61, 35, 0.12);
  padding: 3px 10px;
  border-radius: 4px;
  display: inline-block;
}

.ledger-placeholder__desc {
  font-size: 0.88rem;
  color: var(--muted);
  max-width: 320px;
  margin: 0;
  line-height: 1.45;
}

.color-chips-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
  margin: 2rem 0;
}

.color-chip {
  background: var(--paper);
  border: 1.5px solid var(--ink);
  border-radius: var(--radius);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  box-shadow: 3px 3px 0 var(--ink);
}

.color-chip__swatch {
  height: 48px;
  border-radius: 8px;
  border: 1.5px solid var(--ink);
}

.color-chip__name {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  margin: 0;
}

.color-chip__role {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--muted);
  margin: 0;
}

.evolution-flow {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  margin: 2rem 0;
}

.evolution-node {
  display: grid;
  grid-template-columns: minmax(200px, 260px) 32px 1fr;
  align-items: center;
  gap: 1rem;
  background: var(--paper);
  border: 1.5px solid var(--ink);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
}

.evolution-node.is-final {
  border: 2px solid var(--marker);
  background: #fff8f6;
  box-shadow: 4px 4px 0 var(--marker);
}

.evolution-node__stage {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.92rem;
  color: var(--ink);
}

.evolution-node__arrow {
  text-align: center;
  font-family: var(--font-mono);
  color: var(--marker);
  font-weight: 700;
}

.evolution-node__desc {
  font-size: 0.9rem;
  color: var(--muted);
}

.scorecard-wrap {
  overflow-x: auto;
  margin: 2rem 0;
  border: 1.5px solid var(--ink);
  border-radius: var(--radius);
  background: var(--paper);
  box-shadow: 5px 5px 0 var(--ink);
}

.scorecard-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.95rem;
}

.scorecard-table th {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  background: var(--ink);
  color: #fff;
  padding: 1rem 1.25rem;
}

.scorecard-table td {
  padding: 1.1rem 1.25rem;
  border-bottom: 1px solid var(--line);
  vertical-align: middle;
}

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

.scorecard-table tr:hover td {
  background: rgba(0, 0, 0, 0.02);
}

.badge-pill {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 4px;
  border: 1px solid var(--ink);
  background: var(--canvas);
}

.badge-pill--high {
  background: #ffebe9;
  color: #d64028;
  border-color: #d64028;
}

.badge-pill--med {
  background: #fff8e6;
  color: #d97706;
  border-color: #d97706;
}

.compare-box-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.compare-card {
  border: 1.5px solid var(--ink);
  border-radius: var(--radius);
  padding: 1.5rem;
  background: var(--paper);
}

.compare-card--old {
  background: #fafafa;
  border-style: dashed;
}

.compare-card--new {
  background: #fff;
  border: 2px solid var(--ink);
  box-shadow: 4px 4px 0 var(--ink);
}

.calc-display-box {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--ink);
  line-height: 1.1;
  margin: 0.75rem 0;
}

.calc-display-box.highlight {
  color: #d97706;
}

@media (max-width: 768px) {
  .compare-box-grid {
    grid-template-columns: 1fr;
  }

  .evolution-node {
    grid-template-columns: 1fr;
    gap: 0.4rem;
  }

  .evolution-node__arrow {
    display: none;
  }
}