/* ==========================================================================
   mehedihsn.com — main stylesheet
   Direction: "Built to run well". An editorial, serif-led identity with
   operational "ledger" details: indexed sections, mono labels, case files.
   --------------------------------------------------------------------------
   1.  Fonts (self-hosted)
   2.  Design tokens: change the look here
   3.  Base & typography
   4.  Layout helpers & shared components
   5.  Header, navigation, local time
   6.  Hero & contents index
   7.  About & operating principles
   8.  Experience ledger
   9.  Work list, case-file covers, hover preview
   10. Skills, credentials, now
   11. Contact & mobile contact bar
   12. Case-study pages
   13. Footer & 404
   14. Placeholders & draft markers
   15. Motion & reduced motion
   ========================================================================== */

/* 1. Fonts --------------------------------------------------------------- */
@font-face {
  font-family: "Newsreader";
  src: url("../fonts/newsreader-latin.woff2") format("woff2");
  font-style: normal;
  font-weight: 300 600;
  font-display: swap;
}
@font-face {
  font-family: "Newsreader";
  src: url("../fonts/newsreader-italic-latin.woff2") format("woff2");
  font-style: italic;
  font-weight: 300 600;
  font-display: swap;
}
@font-face {
  font-family: "IBM Plex Mono";
  src: url("../fonts/plex-mono-400-latin.woff2") format("woff2");
  font-style: normal;
  font-weight: 400;
  font-display: swap;
}
@font-face {
  font-family: "IBM Plex Mono";
  src: url("../fonts/plex-mono-500-latin.woff2") format("woff2");
  font-style: normal;
  font-weight: 500;
  font-display: swap;
}

/* 2. Design tokens ------------------------------------------------------- */
:root {
  /* Palette: warm ivory, charcoal, muted ledger green */
  --ivory: #f7f4ec;
  --ivory-2: #efeadf;
  --paper: #fcfaf5;
  --ink: #1d1e1b;
  --ink-2: #363832;
  --muted: #67665e;
  --line: #ddd6c8;
  --line-strong: #c4bcab;
  --green: #2f4a3c;
  --green-deep: #243a2f;
  --green-soft: #dfe5dc;
  --on-green: #f1eee5;
  --on-green-muted: #b3bfb2;
  --on-green-line: #4a6455;

  --serif: "Newsreader", "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  --container: 1240px;
  --gutter: clamp(20px, 5vw, 56px);
  --section-space: clamp(88px, 11vw, 152px);
  --header-h: 68px;
  --radius: 3px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* 3. Base & typography --------------------------------------------------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 20px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--ivory);
  color: var(--ink-2);
  font-family: var(--serif);
  font-size: clamp(1.125rem, 0.4vw + 1.03rem, 1.1875rem);
  font-optical-sizing: auto;
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-kerning: normal;
}

body.menu-open { overflow: hidden; }

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

h1, h2, h3, h4 {
  margin: 0;
  color: var(--ink);
  font-family: var(--serif);
  font-weight: 400;
  line-height: 1.08;
  letter-spacing: -0.018em;
  text-wrap: balance;
}

p { margin: 0 0 1em; text-wrap: pretty; }
p:last-child { margin-bottom: 0; }

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

ul, ol { margin: 0; padding: 0; list-style: none; }
dl, dd { margin: 0; }

::selection { background: var(--green); color: var(--on-green); }

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

.skip-link {
  position: absolute;
  left: 16px;
  top: -100px;
  z-index: 100;
  padding: 10px 16px;
  background: var(--ink);
  color: var(--ivory);
  font-family: var(--mono);
  font-size: 0.8125rem;
  text-decoration: none;
}
.skip-link:focus { top: 16px; }

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* 4. Layout helpers & shared components ---------------------------------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { padding-block: var(--section-space); }
.section--alt { background: var(--ivory-2); }

/* Two-column "margin label + content" grid used across the site */
.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
}
@media (min-width: 900px) {
  .split {
    grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
    gap: 48px;
  }
}

.section-head { margin-bottom: clamp(48px, 7vw, 88px); }

/* Mono label, e.g. "02 — Principles" */
.label {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0;
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}
.label .num { color: var(--green); font-weight: 500; }
.label .rule { flex: 0 0 28px; height: 1px; background: var(--line-strong); }

.section-title {
  font-size: clamp(2.25rem, 4.8vw, 3.75rem);
  max-width: 18ch;
}
.section-title em { font-style: italic; color: var(--green); }

.lead {
  font-size: clamp(1.375rem, 2.1vw, 1.75rem);
  line-height: 1.38;
  color: var(--ink);
  letter-spacing: -0.008em;
}

.prose { max-width: 62ch; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  padding: 12px 22px;
  border: 1px solid var(--ink);
  border-radius: 999px;
  background: transparent;
  color: var(--ink);
  font-family: var(--mono);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.3s var(--ease), color 0.3s var(--ease), border-color 0.3s var(--ease);
}
.btn:hover { background: var(--ink); color: var(--ivory); }
.btn--primary { background: var(--green); border-color: var(--green); color: var(--on-green); }
.btn--primary:hover { background: var(--green-deep); border-color: var(--green-deep); color: var(--on-green); }
.btn .arrow { transition: transform 0.3s var(--ease); }
.btn:hover .arrow { transform: translateX(3px); }
.btn svg { width: 16px; height: 16px; flex: none; }

/* 5. Header, navigation, local time --------------------------------------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  height: var(--header-h);
  border-bottom: 1px solid transparent;
  transition: background-color 0.4s var(--ease), border-color 0.4s var(--ease);
}
.site-header.is-scrolled,
body.menu-open .site-header {
  background: rgba(247, 244, 236, 0.9);
  -webkit-backdrop-filter: saturate(140%) blur(12px);
  backdrop-filter: saturate(140%) blur(12px);
  border-color: var(--line);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 100%;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
  text-decoration: none;
  font-size: 1.1875rem;
  letter-spacing: -0.01em;
}
.brand .seal { width: 38px; height: 38px; flex: none; color: var(--green); }

.header-right { display: flex; align-items: center; gap: 28px; }

.local-time {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  color: var(--muted);
  white-space: nowrap;
}
.local-time .dot {
  display: inline-block;
  width: 6px; height: 6px;
  margin-right: 8px;
  border-radius: 50%;
  background: var(--green);
  vertical-align: 1px;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: clamp(18px, 2.2vw, 32px);
}
.nav-list a {
  position: relative;
  color: var(--ink-2);
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  transition: color 0.3s var(--ease);
}
.nav-list a::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -6px;
  height: 1px;
  background: var(--green);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s var(--ease);
}
.nav-list a:hover,
.nav-list a[aria-current="true"] { color: var(--ink); }
.nav-list a:hover::after,
.nav-list a[aria-current="true"]::after { transform: scaleX(1); }

.nav-list .nav-cta {
  padding: 9px 16px;
  border: 1px solid var(--ink);
  border-radius: 999px;
  color: var(--ink);
}
.nav-list .nav-cta::after { display: none; }
.nav-list .nav-cta:hover { background: var(--ink); color: var(--ivory); }

.menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px; height: 44px;
  margin-right: -10px;
  padding: 0;
  background: none;
  border: 0;
  color: var(--ink);
  cursor: pointer;
}
.menu-toggle .bars { position: relative; width: 22px; height: 10px; }
.menu-toggle .bars span {
  position: absolute;
  left: 0;
  width: 100%;
  height: 1.5px;
  background: currentColor;
  transition: transform 0.4s var(--ease), top 0.4s var(--ease);
}
.menu-toggle .bars span:nth-child(1) { top: 0; }
.menu-toggle .bars span:nth-child(2) { top: 8.5px; }
.menu-toggle[aria-expanded="true"] .bars span:nth-child(1) { top: 4.25px; transform: rotate(45deg); }
.menu-toggle[aria-expanded="true"] .bars span:nth-child(2) { top: 4.25px; transform: rotate(-45deg); }

@media (max-width: 1080px) {
  .header-right .local-time { display: none; }
}

@media (max-width: 860px) {
  .menu-toggle { display: inline-flex; }
  .site-nav {
    position: fixed;
    inset: var(--header-h) 0 0 0;
    background: var(--ivory);
    padding: 24px var(--gutter) 40px;
    overflow-y: auto;
    visibility: hidden;
    opacity: 0;
    transform: translateY(-8px);
    transition: opacity 0.35s var(--ease), transform 0.35s var(--ease), visibility 0s linear 0.35s;
  }
  .site-nav.is-open {
    visibility: visible;
    opacity: 1;
    transform: none;
    transition: opacity 0.35s var(--ease), transform 0.35s var(--ease);
  }
  .nav-list { flex-direction: column; align-items: stretch; gap: 0; }
  .nav-list li { border-bottom: 1px solid var(--line); }
  .nav-list a {
    display: flex;
    justify-content: space-between;
    padding: 18px 0;
    font-family: var(--serif);
    font-size: 1.875rem;
    letter-spacing: -0.01em;
    text-transform: none;
    color: var(--ink);
  }
  .nav-list a::after { display: none; }
  .nav-list a[data-num]::before {
    content: attr(data-num);
    order: 2;
    font-family: var(--mono);
    font-size: 0.75rem;
    color: var(--muted);
    align-self: center;
  }
  .nav-list li:last-child { border-bottom: 0; padding-top: 28px; }
  .nav-list .nav-cta {
    display: inline-flex;
    padding: 12px 24px;
    font-family: var(--mono);
    font-size: 0.8125rem;
    text-transform: uppercase;
  }
}

/* 6. Hero & contents index ----------------------------------------------- */
.hero {
  padding-top: calc(var(--header-h) + clamp(28px, 5vw, 64px));
  padding-bottom: clamp(56px, 8vw, 104px);
}
.hero-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 24px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--ink);
}
.hero-meta .label { gap: 10px; }

.hero-name {
  margin: clamp(20px, 3vw, 36px) 0 clamp(36px, 5vw, 64px);
  font-size: clamp(3.75rem, 12.2vw, 10.75rem);
  font-weight: 340;
  line-height: 0.88;
  letter-spacing: -0.045em;
  white-space: nowrap;
}
.hero-name em { font-style: italic; font-weight: 300; color: var(--green); }
@media (max-width: 700px) {
  .hero-name { white-space: normal; }
  .hero-name .first { display: block; }
}

.hero-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(40px, 5vw, 56px);
}
@media (min-width: 760px) {
  .hero-body {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    grid-template-areas: "intro visual" "facts visual";
    column-gap: clamp(32px, 5vw, 64px);
  }
  .hero-intro-col { grid-area: intro; }
  .hero-facts { grid-area: facts; align-self: end; }
  .hero-visual { grid-area: visual; }
}
@media (min-width: 1100px) {
  .hero-body {
    grid-template-columns: minmax(0, 5fr) minmax(0, 3fr) minmax(0, 4fr);
    grid-template-areas: "intro facts visual";
    align-items: start;
  }
  .hero-facts { align-self: start; }
}

.hero-intro { max-width: 34ch; margin-bottom: 32px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }

.hero-facts { border-top: 1px solid var(--line-strong); }
.hero-facts > div { padding: 14px 0 12px; border-bottom: 1px solid var(--line); }
@media (min-width: 760px) and (max-width: 1099px) {
  .hero-facts { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 24px; }
}
.fact-label {
  display: block;
  margin-bottom: 4px;
  font-family: var(--mono);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}
.fact-value { color: var(--ink); font-size: 1.0625rem; line-height: 1.4; }

/* Hero visual: a designed "operating map". The frame is portrait-shaped
   (4:5) so a real photo can replace the graphic without layout changes. */
.hero-visual { margin: 0; }
.hero-visual .frame {
  position: relative;
  aspect-ratio: 4 / 5;
  width: 100%;
  overflow: hidden;
  border-radius: var(--radius);
  background-color: var(--green);
  color: var(--on-green);
  isolation: isolate;
}
.hero-visual .frame::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    repeating-linear-gradient(0deg, transparent 0 31px, currentColor 31px 32px),
    repeating-linear-gradient(90deg, transparent 0 31px, currentColor 31px 32px);
  opacity: 0.07;
}
.hero-visual .frame img { width: 100%; height: 100%; object-fit: cover; }
.hero-visual svg { display: block; width: 100%; height: 100%; }
.hero-visual .map-text { font-family: var(--mono); font-size: 9.5px; letter-spacing: 0.08em; fill: currentColor; }
.hero-visual .map-label { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.1em; fill: currentColor; }
.hero-visual .map-soft { opacity: 0.62; }
.hero-visual .pulse { transform-origin: 200px 240px; animation: pulse 3.2s var(--ease) infinite; }
@keyframes pulse {
  0% { transform: scale(0.6); opacity: 0.9; }
  100% { transform: scale(2.4); opacity: 0; }
}
.hero-visual figcaption {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 10px;
  font-family: var(--mono);
  font-size: 0.6875rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}
@media (max-width: 759px) {
  .hero-visual .frame { aspect-ratio: 1 / 1; }
}

/* Contents index: the site's signature "table of contents" */
.contents { padding-bottom: var(--section-space); }
.contents-list { border-top: 1px solid var(--ink); }
.contents-list li { border-bottom: 1px solid var(--line); }
.contents-list a {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 16px;
  padding: 18px 0;
  color: var(--ink);
  text-decoration: none;
}
.contents-list .c-num { font-family: var(--mono); font-size: 0.75rem; color: var(--green); }
.contents-list .c-title {
  display: flex;
  align-items: baseline;
  gap: 16px;
  font-size: clamp(1.375rem, 2.6vw, 2rem);
  letter-spacing: -0.012em;
  transition: transform 0.45s var(--ease);
}
.contents-list .c-title::after {
  content: "";
  flex: 1;
  min-width: 24px;
  border-bottom: 1px dotted var(--line-strong);
  transform: translateY(-0.3em);
}
.contents-list .c-desc {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
  text-align: right;
}
.contents-list a:hover .c-title,
.contents-list a:focus-visible .c-title { transform: translateX(8px); }
@media (max-width: 600px) {
  .contents-list a { grid-template-columns: 40px minmax(0, 1fr); }
  .contents-list .c-desc { display: none; }
  .contents-list .c-title::after { display: none; }
}

/* 7. About & operating principles ---------------------------------------- */
.about-text .lead { margin-bottom: 1.3em; }

.interest-list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  column-gap: 32px;
  margin-top: 48px;
  border-top: 1px solid var(--line);
}
@media (min-width: 600px) {
  .interest-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
.interest-list li {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  font-size: 1.25rem;
}
.interest-list .idx { font-family: var(--mono); font-size: 0.6875rem; color: var(--green); }

.principles {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  column-gap: 48px;
  border-top: 1px solid var(--ink);
}
@media (min-width: 640px) {
  .principles { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
.principle {
  padding: 28px 0 36px;
  border-bottom: 1px solid var(--line);
}
.principle .p-num {
  display: block;
  margin-bottom: 36px;
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--green);
}
.principle .suggested {
  margin-left: 10px;
  padding: 2px 8px;
  border: 1px dashed var(--green);
  border-radius: 999px;
  font-size: 0.625rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.principle h3 {
  margin-bottom: 12px;
  font-size: clamp(1.5rem, 2.4vw, 1.875rem);
  font-style: italic;
  font-weight: 350;
}
.principle p { font-size: 1.0625rem; max-width: 36ch; }

/* 8. Experience timeline ------------------------------------------------- */
.subhead {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 16px;
  margin-bottom: 24px;
  font-size: clamp(1.5rem, 2.6vw, 2rem);
}
.subhead .hint {
  font-family: var(--mono);
  font-size: 0.6875rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

.timeline { border-top: 1px solid var(--ink); }
.t-item {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  padding: 28px 0 32px 28px;
  border-bottom: 1px solid var(--line);
}
/* the vertical rail and node */
.t-item::before {
  content: "";
  position: absolute;
  left: 5px; top: 0; bottom: 0;
  width: 1px;
  background: var(--line-strong);
}
.t-item::after {
  content: "";
  position: absolute;
  left: 0; top: 34px;
  width: 11px; height: 11px;
  border: 1px solid var(--green);
  border-radius: 50%;
  background: var(--ivory-2);
}
.t-item--current::after { background: var(--green); }
@media (min-width: 900px) {
  .t-item {
    grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
    gap: 48px;
    padding-left: 0;
  }
  .t-item::before { left: calc(25% + 12px); }
  .t-item::after { left: calc(25% + 7px); }
}
.t-when { font-family: var(--mono); font-size: 0.8125rem; color: var(--ink-2); padding-top: 6px; }
.t-when .now {
  display: inline-block;
  margin-left: 6px;
  font-size: 0.6875rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--green);
}
.t-role { font-size: clamp(1.5rem, 2.4vw, 1.875rem); margin-bottom: 4px; }
.t-org { color: var(--ink-2); margin-bottom: 16px; }
.t-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; }
.t-tags li {
  padding: 5px 12px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  font-family: var(--mono);
  font-size: 0.6875rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--ink);
}
.t-points { display: grid; gap: 8px; max-width: 64ch; }
.prose .t-points { margin-bottom: 1em; }
.t-points li { position: relative; padding-left: 22px; }
.t-points li::before {
  content: "";
  position: absolute;
  left: 0; top: 0.82em;
  width: 10px; height: 1px;
  background: var(--green);
}

/* Core operating areas: compact indexed list beside a sticky heading */
.areas-wrap { margin-top: clamp(72px, 9vw, 112px); }
@media (min-width: 900px) {
  .areas-wrap .areas-head { position: sticky; top: calc(var(--header-h) + 32px); align-self: start; }
}
.areas-head p { margin-top: 12px; font-size: 1rem; max-width: 26ch; }
.areas { border-top: 1px solid var(--ink); }
.area {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 4px 16px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}
@media (min-width: 761px) {
  .area { grid-template-columns: 52px minmax(0, 4fr) minmax(0, 6fr); align-items: baseline; }
}
.area .idx { font-family: var(--mono); font-size: 0.6875rem; color: var(--green); }
.area h4 { font-size: 1.375rem; }
.area p { grid-column: 2 / -1; font-size: 1rem; color: var(--ink-2); }
@media (min-width: 761px) {
  .area p { grid-column: auto; }
}

/* 9. Work index, statuses, case-file covers ----------------------------- */
.status-key {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  margin-bottom: 20px;
  font-size: 0.9375rem;
  color: var(--ink-2);
}
.status-key li { display: flex; align-items: center; gap: 10px; }

/* Status badges: solid = Completed, outlined = In progress, dashed = Concept */
.status {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 4px 11px;
  border: 1px solid var(--green);
  border-radius: 999px;
  font-family: var(--mono);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  white-space: nowrap;
  color: var(--green);
}
.status::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: currentColor;
}
.status--done { background: var(--green); color: var(--on-green); }
.status--progress::before { background: transparent; border: 1px solid currentColor; }
/* Ongoing: outlined, with a half-filled dot */
.status--ongoing::before { background: linear-gradient(90deg, currentColor 50%, transparent 50%); border: 1px solid currentColor; }
.status--concept { border-style: dashed; color: var(--muted); border-color: var(--muted); }
.status--concept::before { background: transparent; border: 1px dashed currentColor; }
.status--unset { border-style: dashed; border-color: var(--line-strong); color: var(--ink-2); }
.status--unset::before { display: none; }

.work-index { border-top: 1px solid var(--ink); }
.work-head {
  display: none;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}
.work-item { border-bottom: 1px solid var(--line); }
.work-item > a {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  padding: 28px 0;
  color: inherit;
  text-decoration: none;
}
.work-thumb .cover { aspect-ratio: 16 / 9; }
.work-thumb .cover-title { font-size: clamp(1.75rem, 7vw, 2.5rem); overflow-wrap: normal; }
.work-case { display: block; margin-bottom: 6px; font-family: var(--mono); font-size: 0.75rem; letter-spacing: 0.06em; color: var(--green); }
.work-title {
  font-size: clamp(1.875rem, 3.4vw, 2.75rem);
  font-weight: 350;
  letter-spacing: -0.025em;
  transition: color 0.35s var(--ease);
}
.work-summary { margin-top: 8px; font-size: 1.0625rem; max-width: 46ch; }
.work-role,
.work-status { display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 12px; }
.work-role .k,
.work-status .k {
  font-family: var(--mono);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}
.work-role .v { color: var(--ink); font-size: 1rem; }
.work-arrow {
  display: grid;
  place-items: center;
  width: 44px; height: 44px;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  color: var(--ink);
  transition: background-color 0.35s var(--ease), color 0.35s var(--ease), border-color 0.35s var(--ease), transform 0.35s var(--ease);
}
.work-thumb .cover { transition: transform 0.6s var(--ease); }
.work-thumb { overflow: hidden; border-radius: var(--radius); }
.work-item > a:hover .work-title,
.work-item > a:focus-visible .work-title { color: var(--green); }
.work-item > a:hover .work-thumb .cover { transform: scale(1.03); }
.work-item > a:hover .work-arrow,
.work-item > a:focus-visible .work-arrow {
  background: var(--green);
  border-color: var(--green);
  color: var(--on-green);
  transform: rotate(-45deg);
}
@media (max-width: 899px) {
  .work-arrow { display: none; }
}
@media (min-width: 900px) {
  .work-head,
  .work-item > a {
    display: grid;
    grid-template-columns: 200px minmax(0, 5fr) minmax(0, 2fr) minmax(0, 2fr) 44px;
    gap: 32px;
    align-items: center;
  }
  .work-head span:first-child { grid-column: 1 / 3; }
  .work-thumb .cover { aspect-ratio: 4 / 3; }
  .work-thumb .cover-inner { padding: 14px; }
  .work-thumb .cover-title { font-size: 1.5rem; }
  .work-thumb .cover-top,
  .work-thumb .cover-bottom { font-size: 0.5625rem; }
  .work-role .k,
  .work-status .k { display: none; }
}

/* Case-file cover: designed typographic artwork for each project.
   Replace with a real image later if you like (see EDIT notes in HTML). */
.cover {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: var(--radius);
  background-color: var(--green);
  color: var(--on-green);
  isolation: isolate;
}
.cover::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    repeating-linear-gradient(0deg, transparent 0 31px, currentColor 31px 32px),
    repeating-linear-gradient(90deg, transparent 0 31px, currentColor 31px 32px);
  opacity: 0.08;
}
.cover-inner {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: clamp(16px, 3vw, 28px);
}
.cover-top,
.cover-bottom {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-family: var(--mono);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0.85;
}
.cover-title {
  font-size: clamp(2rem, 6vw, 3.5rem);
  font-style: italic;
  font-weight: 300;
  line-height: 1;
  letter-spacing: -0.03em;
  color: inherit;
  overflow-wrap: anywhere;
}
.cover--ink { background-color: var(--ink); color: var(--ivory); }
.cover--paper { background-color: var(--green-soft); color: var(--green-deep); }
.cover--wide { aspect-ratio: 16 / 9; }
.cover--wide .cover-title { font-size: clamp(2.5rem, 9vw, 7rem); }
@media (max-width: 600px) {
  .cover--wide { aspect-ratio: 4 / 3; }
}
.cover img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: 1; }

/* 10. Skills, credentials, now ------------------------------------------- */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 250px), 1fr));
  gap: clamp(36px, 5vw, 56px);
  margin-bottom: clamp(64px, 8vw, 104px);
}
.skill-group h3 {
  padding-bottom: 14px;
  margin-bottom: 8px;
  border-bottom: 1px solid var(--ink);
  font-size: 1.375rem;
}
.skill-group h3 .skill-note { font-size: 1rem; font-style: italic; color: var(--muted); }
.skill-group li { padding: 10px 0; border-bottom: 1px solid var(--line); color: var(--ink); font-size: 1.0625rem; }

.credentials { border-top: 1px solid var(--ink); }
.credential {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
}
@media (min-width: 761px) {
  .credential { grid-template-columns: minmax(0, 2fr) minmax(0, 8fr); gap: 24px; }
}
.credential .when { font-family: var(--mono); font-size: 0.8125rem; color: var(--ink-2); }
.credential h4 { font-size: 1.375rem; margin-bottom: 4px; }

.now-list { border-top: 1px solid var(--ink); }
.now-list li {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}
@media (min-width: 761px) {
  .now-list li { grid-template-columns: minmax(0, 2fr) minmax(0, 4fr) minmax(0, 6fr); gap: 24px; align-items: baseline; }
}
.now-list .tag {
  font-family: var(--mono);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--green);
}
.now-list h3 { font-size: 1.5rem; }
.now-list p { font-size: 1.0625rem; }
.now-note { margin-top: 28px; font-family: var(--mono); font-size: 0.75rem; letter-spacing: 0.04em; color: var(--muted); }

/* 11. Contact & mobile contact bar -------------------------------------- */
.contact {
  background: var(--green);
  color: var(--on-green-muted);
}
.contact .label { color: var(--on-green-muted); }
.contact .label .num { color: var(--on-green); }
.contact .label .rule { background: var(--on-green-line); }
.contact h2, .contact h3 { color: var(--on-green); }
.contact ::selection { background: var(--on-green); color: var(--green); }
.contact :focus-visible { outline-color: var(--on-green); }

.contact-title {
  margin: 24px 0 28px;
  font-size: clamp(3.25rem, 9vw, 7.5rem);
  font-weight: 350;
  line-height: 0.92;
  letter-spacing: -0.04em;
}
.contact-title em { font-style: italic; font-weight: 300; }
.contact-intro { max-width: 36ch; margin-bottom: 40px; color: var(--on-green); }

.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(56px, 7vw, 96px);
}
@media (min-width: 960px) {
  .contact-grid { grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); }
}

.contact-links { border-top: 1px solid var(--on-green-line); }
.contact-links li { border-bottom: 1px solid var(--on-green-line); }
.contact-links a,
.contact-links .static {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 0;
  color: var(--on-green);
  text-decoration: none;
}
.contact-links .k {
  flex-shrink: 0;
  font-family: var(--mono);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--on-green-muted);
}
.contact-links .v { font-size: clamp(1.125rem, 2vw, 1.375rem); text-align: right; overflow-wrap: anywhere; }
.contact-links a:hover .v { text-decoration: underline; text-underline-offset: 0.2em; text-decoration-thickness: 1px; }

.contact-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 20px; margin-top: 28px; }
.contact .btn { border-color: var(--on-green-line); color: var(--on-green); }
.contact .btn:hover { background: var(--on-green); border-color: var(--on-green); color: var(--green); }
.contact .btn--primary { background: var(--on-green); border-color: var(--on-green); color: var(--green); }
.contact .btn--primary:hover { background: #fff; border-color: #fff; color: var(--green-deep); }

.contact-form { display: grid; gap: 26px; }
.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 220px), 1fr));
  gap: 26px;
}
.field { display: grid; gap: 6px; }
.field label {
  font-family: var(--mono);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--on-green-muted);
}
.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 10px 0;
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--on-green-line);
  border-radius: 0;
  color: var(--on-green);
  font: inherit;
  font-size: 1.125rem;
  transition: border-color 0.3s var(--ease);
  -webkit-appearance: none;
  appearance: none;
}
.field select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%23b3bfb2' stroke-width='1.5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 4px center;
  padding-right: 24px;
}
.field select option { color: var(--ink); background: var(--ivory); }
.field textarea { min-height: 130px; resize: vertical; }
.field input::placeholder,
.field textarea::placeholder { color: var(--on-green-muted); }
.field input:focus,
.field select:focus,
.field textarea:focus { outline: none; border-color: var(--on-green); }
.field input:focus-visible,
.field select:focus-visible,
.field textarea:focus-visible { outline: none; box-shadow: 0 1px 0 0 var(--on-green); }
.field [aria-invalid="true"] { border-color: #f0b9a0; }
.field-error { min-height: 1.2em; font-family: var(--mono); font-size: 0.75rem; color: #f6c9b4; }

.form-footer { display: flex; flex-wrap: wrap; align-items: center; gap: 18px; }
.form-note { margin: 0; max-width: 34ch; font-size: 0.9375rem; color: var(--on-green-muted); }
.form-status { min-height: 1.5em; color: var(--on-green); }

.copy-btn {
  min-height: 44px;
  padding: 4px 0;
  background: none;
  border: 0;
  border-bottom: 1px solid var(--on-green-line);
  color: var(--on-green-muted);
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  cursor: pointer;
}
.copy-btn:hover { color: var(--on-green); border-color: var(--on-green); }

/* Mobile contact bar: thumb-reachable quick actions on phones */
.contact-bar { display: none; }
@media (max-width: 760px) {
  .contact-bar {
    position: fixed;
    left: 12px; right: 12px;
    bottom: calc(12px + env(safe-area-inset-bottom, 0px));
    z-index: 45;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    padding: 6px;
    background: rgba(29, 30, 27, 0.94);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    border-radius: 999px;
    box-shadow: 0 12px 32px -12px rgba(29, 30, 27, 0.5);
    transition: transform 0.45s var(--ease), opacity 0.3s var(--ease);
  }
  .contact-bar a {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 48px;
    border-radius: 999px;
    color: var(--ivory);
    font-family: var(--mono);
    font-size: 0.75rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    text-decoration: none;
  }
  .contact-bar a:active { background: rgba(247, 244, 236, 0.12); }
  .contact-bar .save { background: var(--green); }
  .contact-bar svg { width: 15px; height: 15px; flex: none; }
  .contact-bar.is-hidden,
  body.menu-open .contact-bar { transform: translateY(calc(100% + 24px)); opacity: 0; pointer-events: none; }
  body.has-contact-bar .site-footer { padding-bottom: calc(96px + env(safe-area-inset-bottom, 0px)); }
}

/* 12. Case-study pages --------------------------------------------------- */
.progress {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 60;
  height: 2px;
  background: var(--green);
  transform-origin: left;
  transform: scaleX(var(--progress, 0));
}

.case-hero {
  padding-top: calc(var(--header-h) + clamp(32px, 6vw, 80px));
  padding-bottom: clamp(40px, 5vw, 64px);
}
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: clamp(36px, 5vw, 64px);
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
}
.back-link:hover { color: var(--ink); }
.case-title {
  margin: 20px 0 24px;
  font-size: clamp(3.25rem, 10vw, 8rem);
  font-weight: 350;
  line-height: 0.92;
  letter-spacing: -0.04em;
}
.case-summary { max-width: 34ch; }

.case-facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 170px), 1fr));
  margin-top: clamp(40px, 5vw, 64px);
  border-top: 1px solid var(--ink);
}
.case-facts > div { padding: 16px 16px 14px 0; border-bottom: 1px solid var(--line); }

.glance {
  margin-top: clamp(40px, 5vw, 56px);
  padding: clamp(24px, 3vw, 32px);
  background: var(--paper);
  border: 1px solid var(--line);
  border-left: 3px solid var(--green);
  border-radius: var(--radius);
}
.glance h2 {
  margin-bottom: 16px;
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--green);
}
.glance dl { display: grid; gap: 12px; }
.glance dl > div {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2px;
}
@media (min-width: 640px) {
  .glance dl > div { grid-template-columns: 120px minmax(0, 1fr); gap: 16px; }
}
.glance dt {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
  padding-top: 4px;
}
.glance dd { color: var(--ink); }

.case-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 48px;
  padding-top: clamp(48px, 6vw, 80px);
}
@media (min-width: 960px) {
  .case-layout { grid-template-columns: minmax(0, 3fr) minmax(0, 9fr); }
}
.chapters { display: none; }
@media (min-width: 960px) {
  .chapters {
    display: block;
    position: sticky;
    top: calc(var(--header-h) + 32px);
    align-self: start;
  }
  .chapters ol { border-top: 1px solid var(--ink); }
  .chapters li { border-bottom: 1px solid var(--line); }
  .chapters a {
    display: flex;
    gap: 12px;
    padding: 10px 0;
    color: var(--muted);
    font-family: var(--mono);
    font-size: 0.75rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    text-decoration: none;
    transition: color 0.3s var(--ease);
  }
  .chapters a .n { color: var(--line-strong); transition: color 0.3s var(--ease); }
  .chapters a:hover,
  .chapters a[aria-current="true"] { color: var(--ink); }
  .chapters a[aria-current="true"] .n { color: var(--green); }
}

.chapter {
  padding-bottom: clamp(48px, 6vw, 72px);
  margin-bottom: clamp(48px, 6vw, 72px);
  border-bottom: 1px solid var(--line);
}
.chapter:last-child { border-bottom: 0; margin-bottom: 0; }
.chapter h2 {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 20px;
  font-size: clamp(1.75rem, 3vw, 2.375rem);
}
.chapter h2 .n { font-family: var(--mono); font-size: 0.75rem; color: var(--green); letter-spacing: 0.04em; }

.steps { display: grid; gap: 24px; counter-reset: step; }
.steps li {
  counter-increment: step;
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 8px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}
.steps li::before {
  content: counter(step, decimal-leading-zero);
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--green);
  padding-top: 6px;
}
.steps h3 { font-size: 1.3125rem; margin-bottom: 4px; }

.results { border-top: 1px solid var(--ink); }
.results li {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}
@media (min-width: 640px) {
  .results li { grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); gap: 24px; align-items: baseline; }
}
.results strong { color: var(--ink); font-size: 1.375rem; font-weight: 400; }
.results span { font-size: 1.0625rem; }

.pull-quote {
  margin: 0;
  padding-left: 24px;
  border-left: 2px solid var(--green);
  font-size: clamp(1.5rem, 3vw, 2.125rem);
  font-style: italic;
  font-weight: 300;
  line-height: 1.3;
  color: var(--ink);
}

.next-case {
  display: block;
  padding-block: clamp(64px, 9vw, 120px);
  border-top: 1px solid var(--line);
  color: inherit;
  text-decoration: none;
  text-align: center;
}
.next-case .label { justify-content: center; }
.next-case .next-title {
  display: inline-block;
  margin-top: 14px;
  font-size: clamp(2.5rem, 7vw, 5.5rem);
  font-weight: 350;
  line-height: 1;
  letter-spacing: -0.035em;
  color: var(--ink);
  transition: transform 0.5s var(--ease), color 0.4s var(--ease);
}
.next-case:hover .next-title { transform: translateX(10px); color: var(--green); }

/* 13. Footer & 404 -------------------------------------------------------- */
.site-footer {
  padding-block: 28px;
  background: var(--green-deep);
  color: var(--on-green-muted);
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
}
.site-footer--light { background: var(--ivory); color: var(--muted); border-top: 1px solid var(--line); }
.site-footer .container {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
}
.site-footer p { margin: 0; }
.site-footer a { color: inherit; text-decoration: none; }
.site-footer a:hover { color: var(--on-green); }
.site-footer--light a:hover { color: var(--ink); }

.not-found {
  min-height: 100vh;
  display: grid;
  align-content: center;
  padding-block: 64px;
}

/* 14. Placeholders & draft markers --------------------------------------- */
.ph {
  background: #f6e7b8;
  color: #5e4708;
  box-shadow: 0 0 0 2px #f6e7b8;
  border-radius: 2px;
  font-style: normal;
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
}
.contact .ph { background: #3e5444; color: #f3dea0; box-shadow: 0 0 0 2px #3e5444; }
.cover .ph { background: transparent; color: inherit; box-shadow: none; border-bottom: 1px dashed currentColor; }
.contact-bar a[data-placeholder] { position: relative; }
.contact-bar a[data-placeholder]::after {
  content: "";
  position: absolute;
  top: 9px; right: 12px;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: #f6e7b8;
}
.ph-note { font-family: var(--mono); font-size: 0.75rem; line-height: 1.5; max-width: 30ch; }

.draft {
  text-decoration: underline dashed var(--green);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.25em;
}
.draft-banner {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 14px;
  margin-bottom: 32px;
  padding: 14px 18px;
  background: var(--green-soft);
  border-radius: var(--radius);
  color: var(--green-deep);
  font-size: 1rem;
}
.draft-banner strong {
  font-family: var(--mono);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* 15. Motion & reduced motion ------------------------------------------- */
.js .reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
  transition-delay: var(--delay, 0s);
}
.js .reveal.is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    transition-delay: 0s !important;
  }
  .js .reveal { opacity: 1; transform: none; }
  .hero-visual .pulse { animation: none; opacity: 0; }
}