/* ==========================================================================
   welfish.net — design system
   Static, no framework. Mobile-first. All values come from the tokens below.
   ========================================================================== */

/* ---------- Fonts (IBM Plex, SIL OFL, self-hosted) ---------- */
@font-face {
  font-family: "Plex Sans";
  src: url("assets/fonts/plex-sans-var-latin.woff2") format("woff2");
  font-weight: 400 600;
  font-display: swap;
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Plex Sans";
  src: url("assets/fonts/plex-sans-var-latin-ext.woff2") format("woff2");
  font-weight: 400 600;
  font-display: swap;
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: "Plex Mono";
  src: url("assets/fonts/plex-mono-400-latin.woff2") format("woff2");
  font-weight: 400;
  font-display: swap;
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Plex Mono";
  src: url("assets/fonts/plex-mono-400-latin-ext.woff2") format("woff2");
  font-weight: 400;
  font-display: swap;
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

/* ---------- Tokens ---------- */
:root {
  /* colour — ink */
  --c-ink:          #0b0c0d;
  --c-ink-raised:   #111314;
  --c-ink-sunken:   #080909;
  --c-text:         #edebe6;
  --c-text-2:       #aeada7;
  --c-text-3:       #8a8b84;
  --c-line:         rgba(237, 235, 230, 0.12);
  --c-line-strong:  rgba(237, 235, 230, 0.24);

  /* colour — paper (single inverted section) */
  --c-paper:        #ebe9e3;
  --c-paper-raised: #e2e0d9;
  --c-on-paper:     #0b0c0d;
  --c-on-paper-2:   #4f514b;
  --c-paper-line:   rgba(11, 12, 13, 0.14);

  /* colour — signal */
  --c-accent:       #e9a23b;
  --c-accent-hover: #f3b75e;
  --c-accent-deep:  #9c5e07; /* accent on paper, passes 4.5:1 */
  --c-on-accent:    #0b0c0d;

  /* type */
  --font-sans: "Plex Sans", "Segoe UI", -apple-system, BlinkMacSystemFont, Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "Plex Mono", ui-monospace, "SF Mono", "Cascadia Mono", Consolas, monospace;

  --fs-display:   clamp(2.6rem, 1.15rem + 5.9vw, 6.75rem);
  --fs-statement: clamp(2.1rem, 0.9rem + 4.6vw, 5.5rem);
  --fs-h2:        clamp(1.9rem, 1.2rem + 2.7vw, 3.6rem);
  --fs-h3:        clamp(1.25rem, 1.08rem + 0.6vw, 1.625rem);
  --fs-figure:    clamp(2rem, 1.45rem + 2vw, 3.25rem);
  --fs-lead:      clamp(1.0625rem, 0.98rem + 0.4vw, 1.3125rem);
  --fs-body:      1rem;
  --fs-small:     0.875rem;
  --fs-label:     0.75rem;
  --fs-micro:     0.6875rem;

  --lh-tight: 1.02;
  --lh-heading: 1.1;
  --lh-body: 1.6;

  --tracking-display: -0.04em;
  --tracking-heading: -0.025em;
  --tracking-title: -0.015em;
  --tracking-label: 0.08em;

  --fw-regular: 400;
  --fw-medium: 500;
  --fw-semibold: 600;

  /* space */
  --space-2xs: 0.25rem;
  --space-xs:  0.5rem;
  --space-s:   0.75rem;
  --space-m:   1rem;
  --space-l:   1.5rem;
  --space-xl:  2rem;
  --space-2xl: 3rem;
  --space-3xl: clamp(3rem, 2rem + 3vw, 5rem);
  --space-section: clamp(5rem, 3rem + 7vw, 10rem);

  /* layout */
  --container: 1360px;
  --gutter: clamp(1.25rem, 0.6rem + 3vw, 4rem);
  --grid-gap: clamp(1rem, 0.5rem + 1.6vw, 2rem);
  --header-h: 64px;

  /* borders */
  --border: 1px solid var(--c-line);
  --border-strong: 1px solid var(--c-line-strong);
  --border-paper: 1px solid var(--c-paper-line);

  /* motion */
  --ease-out: cubic-bezier(0.2, 0.7, 0.1, 1);
  --dur-fast: 160ms;
  --dur-base: 320ms;
  --dur-slow: 900ms;
}

@media (min-width: 1024px) {
  :root { --header-h: 76px; }
}

/* ---------- Reset / base ---------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-h);
  background: var(--c-ink);
}

body {
  margin: 0;
  background: var(--c-ink);
  color: var(--c-text);
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  font-weight: var(--fw-regular);
  line-height: var(--lh-body);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: clip;
}

body.nav-open { overflow: hidden; }

h1, h2, h3, h4, p, dl, dd, ol, ul, figure, blockquote { margin: 0; }
ol, ul { padding: 0; list-style: none; }
img, video { display: block; max-width: 100%; }
address { font-style: normal; }
button { font: inherit; color: inherit; }
a { color: inherit; text-decoration: none; }

:focus-visible {
  outline: 2px solid var(--c-accent);
  outline-offset: 3px;
}
.section-paper :focus-visible { outline-color: var(--c-on-paper); }

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

/* Language switching: the inactive language leaves rendering and the accessibility tree. */
html[lang="tr"] [lang="en"],
html[lang="en"] [lang="tr"] { display: none !important; }

/* author display rules must never resurrect elements hidden with the attribute */
[hidden] { display: none !important; }

.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;
}

.skip-link {
  position: fixed;
  top: var(--space-s);
  left: var(--space-s);
  z-index: 100;
  padding: var(--space-s) var(--space-m);
  background: var(--c-accent);
  color: var(--c-on-accent);
  font-weight: var(--fw-medium);
  transform: translateY(-200%);
}
.skip-link:focus { transform: none; }

.container {
  width: 100%;
  max-width: calc(var(--container) + 2 * var(--gutter));
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* ---------- Primitives ---------- */
.eyebrow,
.label-mono {
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: var(--space-s);
  color: var(--c-text-2);
}
.eyebrow::before {
  content: "";
  flex: none;
  width: var(--space-l);
  height: 1px;
  background: var(--c-accent);
}
.eyebrow-num { color: var(--c-accent); }
.no-case { text-transform: none; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-s);
  min-height: 2.75rem;
  padding: 0 var(--space-l);
  border: 1px solid transparent;
  font-size: var(--fs-small);
  font-weight: var(--fw-medium);
  line-height: 1;
  white-space: nowrap;
  cursor: pointer;
  transition: background-color var(--dur-fast) ease, color var(--dur-fast) ease, border-color var(--dur-fast) ease;
}
.btn-lg { min-height: 3.5rem; padding: 0 var(--space-xl); font-size: var(--fs-body); }

.btn-primary { background: var(--c-accent); color: var(--c-on-accent); }
.btn-primary:hover { background: var(--c-accent-hover); }

.btn-ghost { border-color: var(--c-line-strong); color: var(--c-text); }
.btn-ghost:hover { border-color: var(--c-text); }

.btn-arrow {
  width: 1rem;
  height: 1rem;
  transition: transform var(--dur-base) var(--ease-out);
}
.btn:hover .btn-arrow { transform: translateX(3px); }

.section { position: relative; padding-block: var(--space-section); }

.section-head {
  display: grid;
  gap: var(--space-l);
  margin-bottom: var(--space-3xl);
}
.section-title {
  font-size: var(--fs-h2);
  font-weight: var(--fw-medium);
  line-height: var(--lh-heading);
  letter-spacing: var(--tracking-heading);
  max-width: 22ch;
  text-wrap: balance;
}
.section-title-sm { font-size: var(--fs-h3); max-width: none; }
.section-intro {
  font-size: var(--fs-lead);
  color: var(--c-text-2);
  max-width: 48ch;
}

@media (min-width: 1024px) {
  .section-head {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    column-gap: var(--grid-gap);
    align-items: end;
  }
  .section-head .eyebrow { grid-column: 1 / -1; }
  .section-head .section-title { grid-column: 1 / span 8; }
  .section-head .section-intro { grid-column: 9 / -1; }
}

/* ==========================================================================
   Header
   ========================================================================== */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  height: var(--header-h);
  background: rgba(11, 12, 13, 0.94);
  border-bottom: var(--border);
  transition: background-color var(--dur-base) ease, border-color var(--dur-base) ease;
}
/* JS marks the header while the hero sits under it: transparent over the video. */
.site-header[data-at-top="true"] {
  background: transparent;
  border-bottom-color: transparent;
}
body.nav-open .site-header {
  background: var(--c-ink);
  border-bottom-color: var(--c-line);
}

.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.brand {
  flex: none;
  display: inline-flex;
  align-items: center;
  gap: var(--space-s);
}
.brand-logo { width: auto; height: 34px; }
@media (min-width: 1024px) { .brand-logo { height: 42px; } }
.brand-word {
  font-size: 0.9375rem;
  font-weight: var(--fw-semibold);
  letter-spacing: 0.18em;
}

.header-tools {
  display: flex;
  align-items: center;
  gap: var(--space-s);
  margin-left: auto;
}

.lang-switch { display: flex; border: var(--border-strong); }
.lang-switch button {
  min-width: 2.5rem;
  min-height: 2.25rem;
  padding: 0 var(--space-xs);
  background: transparent;
  border: 0;
  color: var(--c-text-2);
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  letter-spacing: var(--tracking-label);
  cursor: pointer;
  transition: color var(--dur-fast) ease, background-color var(--dur-fast) ease;
}
.lang-switch button + button { border-left: var(--border-strong); }
.lang-switch button:hover { color: var(--c-text); }
.lang-switch button[aria-pressed="true"] { background: var(--c-text); color: var(--c-ink); }

/* Nav, mobile first: an overlay panel below the header. */
.nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  margin-right: calc(-1 * var(--space-xs));
  background: transparent;
  border: 0;
  cursor: pointer;
}
.nav-toggle-icon { position: relative; width: 22px; height: 10px; }
.nav-toggle-icon span {
  position: absolute;
  left: 0;
  right: 0;
  height: 1.5px;
  background: currentColor;
  transition: transform var(--dur-base) var(--ease-out), top var(--dur-base) var(--ease-out);
}
.nav-toggle-icon span:first-child { top: 0; }
.nav-toggle-icon span:last-child  { top: 8.5px; }
.nav-toggle[aria-expanded="true"] .nav-toggle-icon span:first-child { top: 4.25px; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-icon span:last-child  { top: 4.25px; transform: rotate(-45deg); }

.site-nav {
  position: fixed;
  inset: var(--header-h) 0 0 0;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: var(--space-2xl);
  padding: var(--space-l) var(--gutter) calc(var(--space-xl) + env(safe-area-inset-bottom));
  background: var(--c-ink);
  overflow-y: auto;
  visibility: hidden;
  opacity: 0;
  transition: opacity var(--dur-base) ease, visibility 0s linear var(--dur-base);
}
.site-nav[data-open="true"] {
  visibility: visible;
  opacity: 1;
  transition: opacity var(--dur-base) ease, visibility 0s;
}
.nav-list { display: grid; }
.nav-list a {
  display: block;
  padding-block: var(--space-m);
  border-bottom: var(--border);
  font-size: clamp(1.5rem, 1.2rem + 1.5vw, 2rem);
  font-weight: var(--fw-medium);
  letter-spacing: var(--tracking-heading);
}
.nav-cta { min-height: 3.5rem; font-size: var(--fs-body); }

/* No-JS on small screens: nav becomes a plain wrapped row. */
html:not(.js) .nav-toggle { display: none; }
html:not(.js) .site-header { position: absolute; height: auto; }
html:not(.js) .header-inner { flex-wrap: wrap; row-gap: var(--space-s); padding-block: var(--space-s); }
html:not(.js) .site-nav {
  position: static;
  order: 3;
  width: 100%;
  padding: 0;
  background: none;
  visibility: visible;
  opacity: 1;
}
html:not(.js) .nav-list { display: flex; flex-wrap: wrap; gap: var(--space-m); }
html:not(.js) .nav-list a { padding: 0; border: 0; font-size: var(--fs-small); }
html:not(.js) .nav-cta { display: none; }

@media (min-width: 1024px) {
  .nav-toggle { display: none; }

  .site-nav,
  html:not(.js) .site-nav {
    position: static;
    order: 0;
    flex: 1;
    flex-direction: row;
    align-items: center;
    justify-content: flex-end;
    gap: var(--space-xl);
    width: auto;
    padding: 0;
    background: none;
    overflow: visible;
    visibility: visible;
    opacity: 1;
  }
  .nav-list,
  html:not(.js) .nav-list { display: flex; gap: clamp(1rem, 0.2rem + 1.3vw, 2rem); }

  .nav-list a,
  html:not(.js) .nav-list a {
    position: relative;
    padding: var(--space-xs) 0;
    border: 0;
    font-size: var(--fs-small);
    font-weight: var(--fw-regular);
    letter-spacing: 0;
    color: var(--c-text-2);
    transition: color var(--dur-fast) ease;
  }
  .nav-list a::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    height: 1px;
    background: var(--c-accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--dur-base) var(--ease-out);
  }
  .nav-list a:hover,
  .nav-list a[aria-current="true"] { color: var(--c-text); }
  .nav-list a[aria-current="true"]::after { transform: scaleX(1); }

  .nav-cta,
  html:not(.js) .nav-cta { display: inline-flex; min-height: 2.5rem; font-size: var(--fs-small); }

  .header-tools { margin-left: 0; }
  html:not(.js) .site-header { position: fixed; height: var(--header-h); }
  html:not(.js) .header-inner { flex-wrap: nowrap; padding-block: 0; }
}
@media (min-width: 1024px) and (max-width: 1199px) {
  .nav-cta { display: none !important; }
}

/* ==========================================================================
   Hero
   ========================================================================== */
.hero {
  position: relative;
  isolation: isolate;
  display: flex;
  min-height: 100vh;
  min-height: 100svh;
  overflow: hidden;
  background: var(--c-ink) url("assets/hero-sim-poster.jpg") 60% 50% / cover no-repeat;
}

.hero-media { position: absolute; inset: 0; z-index: -1; }

.hero-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 60% 50%;
}

/* Readability scrim: darkest where the text sits (bottom-left). */
.hero-scrim {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(to top, rgba(11, 12, 13, 0.96) 0%, rgba(11, 12, 13, 0.76) 30%, rgba(11, 12, 13, 0.3) 62%, rgba(11, 12, 13, 0.58) 100%),
    linear-gradient(to right, rgba(11, 12, 13, 0.7) 0%, rgba(11, 12, 13, 0.16) 60%, rgba(11, 12, 13, 0) 100%);
}

.hero-inner {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: var(--space-l);
  padding-top: calc(var(--header-h) + var(--space-3xl));
  padding-bottom: var(--space-l);
}

.hero-title {
  max-width: 15ch;
  font-size: var(--fs-display);
  font-weight: var(--fw-medium);
  line-height: var(--lh-tight);
  letter-spacing: var(--tracking-display);
  text-wrap: balance;
}
html[lang="en"] .hero-title { max-width: 14ch; }

.hero-foot {
  display: grid;
  gap: var(--space-xl);
  margin-top: var(--space-m);
}
.hero-lead {
  max-width: 46ch;
  font-size: var(--fs-lead);
  color: var(--c-text-2);
}
.hero-actions { display: flex; flex-wrap: wrap; gap: var(--space-s); }
.hero-actions .btn { flex: 1 1 auto; }

.hero-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-m);
  margin-top: var(--space-xl);
  padding-top: var(--space-m);
  border-top: var(--border);
}
.hero-caption {
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: 0.04em;
  color: var(--c-text-3);
}

.video-toggle {
  flex: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  background: transparent;
  border: var(--border-strong);
  color: var(--c-text-2);
  cursor: pointer;
  transition: color var(--dur-fast) ease, border-color var(--dur-fast) ease;
}
.video-toggle:hover { color: var(--c-text); border-color: var(--c-text); }
.video-toggle svg { width: 14px; height: 14px; }
.video-toggle .icon-play { display: none; }
.video-toggle[aria-pressed="true"] .icon-play { display: block; }
.video-toggle[aria-pressed="true"] .icon-pause { display: none; }

@media (min-width: 640px) {
  .hero-actions .btn { flex: 0 0 auto; }
}

@media (min-width: 1024px) {
  .hero-inner { gap: var(--space-xl); padding-bottom: var(--space-xl); }
  .hero-foot {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
    gap: var(--space-2xl);
  }
  .hero-meta { margin-top: var(--space-2xl); }
}

/* Subtle entrance: hero only, once. */
@media (prefers-reduced-motion: no-preference) {
  .js .hero-eyebrow,
  .js .hero-title,
  .js .hero-foot { animation: rise var(--dur-slow) var(--ease-out) both; }
  .js .hero-title { animation-delay: 80ms; }
  .js .hero-foot  { animation-delay: 200ms; }

  .hero-video { transition: opacity 1.2s ease; }
  .js .hero-video:not(.is-playing) { opacity: 0; }
}
@keyframes rise {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: none; }
}

/* ==========================================================================
   Proof strip
   ========================================================================== */
.proof { background: var(--c-ink); border-bottom: var(--border); }

.proof-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); }

.proof-item {
  container-type: inline-size;
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  padding-block: var(--space-xl);
  border-bottom: var(--border);
}
.proof-item:nth-child(odd)  { padding-right: var(--space-l); border-right: var(--border); }
.proof-item:nth-child(even) { padding-left: var(--space-l); }
.proof-item:last-child { grid-column: 1 / -1; padding-inline: 0; border-right: 0; border-bottom: 0; }

.proof-figure {
  /* scales with its own cell so long figures ("Teknokent", "≈100K USD") never cross the divider */
  font-size: min(var(--fs-figure), 17cqi);
  font-weight: var(--fw-medium);
  line-height: 1;
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.proof-figure small {
  margin-left: 0.15em;
  font-family: var(--font-mono);
  font-size: 0.34em;
  letter-spacing: 0.04em;
  vertical-align: 0.9em;
  color: var(--c-text-2);
}
.proof-label {
  max-width: 26ch;
  font-size: var(--fs-small);
  line-height: 1.45;
  color: var(--c-text-2);
}

/* 7 figures: a row of four headline numbers, then a row of three */
@media (min-width: 1024px) {
  .proof-list { grid-template-columns: repeat(12, minmax(0, 1fr)); }
  .proof-item,
  .proof-item:nth-child(odd),
  .proof-item:nth-child(even),
  .proof-item:last-child {
    grid-column: span 3;
    padding: var(--space-2xl) var(--space-l);
    border-right: var(--border);
    border-bottom: 0;
  }
  .proof-item:nth-child(n+5) { grid-column: span 4; border-top: var(--border); }
  .proof-item:first-child,
  .proof-item:nth-child(5) { padding-left: 0; }
  .proof-item:nth-child(4),
  .proof-item:last-child { padding-right: 0; border-right: 0; }
}

/* ==========================================================================
   01 Scope — capability rows
   ========================================================================== */
.capabilities { border-top: var(--border); }

.capability {
  display: grid;
  grid-template-columns: 2.5rem minmax(0, 1fr);
  column-gap: var(--space-m);
  row-gap: var(--space-s);
  padding-block: var(--space-xl);
  border-bottom: var(--border);
}
.capability-num {
  grid-row: 1 / span 3;
  padding-top: 0.45em;
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  color: var(--c-text-3);
  transition: color var(--dur-base) ease;
}
.capability:hover .capability-num { color: var(--c-accent); }
.capability-title {
  font-size: var(--fs-h3);
  font-weight: var(--fw-medium);
  line-height: 1.2;
  letter-spacing: var(--tracking-title);
}
.capability-text { max-width: 52ch; color: var(--c-text-2); }

.tags { display: flex; flex-wrap: wrap; gap: var(--space-xs); margin-top: var(--space-2xs); }
.tags li {
  padding: 0.3rem 0.55rem;
  border: var(--border);
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: 0.04em;
  color: var(--c-text-2);
}

@media (min-width: 900px) {
  .capability {
    grid-template-columns: 4rem minmax(0, 5fr) minmax(0, 5fr) minmax(0, 3fr);
    column-gap: var(--grid-gap);
    align-items: start;
    padding-block: var(--space-2xl);
  }
  .capability-num { grid-row: auto; }
  .tags { justify-content: flex-end; margin-top: 0.3em; }
}

/* ==========================================================================
   02 Engagement — paper section
   ========================================================================== */
.section-paper { background: var(--c-paper); color: var(--c-on-paper); }
.section-paper .eyebrow { color: var(--c-on-paper-2); }
.section-paper .eyebrow::before { background: var(--c-on-paper); }
.section-paper .eyebrow-num { color: var(--c-accent-deep); }

/* Flow: vertical timeline on mobile, horizontal rail on desktop. */
.flow {
  position: relative;
  display: grid;
  gap: var(--space-2xl);
  padding-left: var(--space-xl);
}
.flow::before {
  content: "";
  position: absolute;
  top: 0.4rem;
  bottom: 0.4rem;
  left: 4px;
  width: 1px;
  background: var(--c-paper-line);
}
.flow-step { position: relative; display: grid; gap: var(--space-s); align-content: start; }
.flow-step::before {
  content: "";
  position: absolute;
  top: 0.3rem;
  left: calc(-1 * var(--space-xl));
  width: 9px;
  height: 9px;
  background: var(--c-paper);
  border: 1px solid var(--c-on-paper);
}
.flow-step:nth-child(2)::before { background: var(--c-accent); border-color: var(--c-accent-deep); }
.flow-step:last-child::before { background: var(--c-on-paper); }

.flow-index {
  display: flex;
  gap: var(--space-s);
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--c-on-paper-2);
}
.flow-index span:first-child { color: var(--c-accent-deep); }
.flow-title {
  font-size: var(--fs-h3);
  font-weight: var(--fw-medium);
  line-height: 1.2;
  letter-spacing: var(--tracking-title);
}
.flow-text { max-width: 40ch; color: var(--c-on-paper-2); }

@media (min-width: 1024px) {
  .flow {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: var(--grid-gap);
    padding-top: var(--space-xl);
    padding-left: 0;
  }
  .flow::before {
    top: 4px;
    bottom: auto;
    left: 0;
    right: 0;
    width: auto;
    height: 1px;
  }
  .flow-step { padding-right: var(--space-l); }
  .flow-step::before { top: calc(-1 * var(--space-xl)); left: 0; }
  .flow-step:not(:last-child)::after {
    content: "";
    position: absolute;
    top: calc(-1 * var(--space-xl));
    right: var(--space-l);
    width: 9px;
    height: 9px;
    border-top: 1px solid var(--c-on-paper);
    border-right: 1px solid var(--c-on-paper);
    transform: rotate(45deg);
  }
}

/* Engagement models */
.models {
  display: grid;
  gap: var(--space-l);
  margin-top: var(--space-3xl);
  padding-top: var(--space-2xl);
  border-top: var(--border-paper);
}
.models-title {
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  font-weight: var(--fw-regular);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--c-on-paper-2);
}
.model {
  display: grid;
  gap: var(--space-s);
  align-content: start;
  padding: var(--space-xl);
  background: var(--c-paper-raised);
}
.model-kicker {
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--c-accent-deep);
}
.model-name {
  font-size: var(--fs-h2);
  font-weight: var(--fw-medium);
  line-height: 1;
  letter-spacing: var(--tracking-heading);
}
.model-text { max-width: 44ch; color: var(--c-on-paper-2); }

@media (min-width: 900px) {
  .models {
    grid-template-columns: minmax(0, 3fr) minmax(0, 4.5fr) minmax(0, 4.5fr);
    gap: var(--grid-gap);
  }
  .model { padding: var(--space-2xl) var(--space-xl); }
}

/* First milestone: the risk reducer */
.first-step {
  display: grid;
  gap: var(--space-l);
  margin-top: var(--grid-gap);
  padding: var(--space-xl);
  background: var(--c-on-paper);
  color: var(--c-paper);
}
.first-step-label {
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--c-accent);
}
.first-step-text {
  max-width: 40ch;
  font-size: var(--fs-h3);
  line-height: 1.3;
  letter-spacing: var(--tracking-title);
}
.first-step .btn { justify-self: start; }

@media (min-width: 900px) {
  .first-step {
    grid-template-columns: minmax(0, 3fr) minmax(0, 6fr) minmax(0, 3fr);
    align-items: center;
    gap: var(--grid-gap);
    padding: var(--space-2xl) var(--space-xl);
  }
  .first-step .btn { justify-self: end; }
}

/* Terms */
.terms {
  display: grid;
  margin-top: var(--space-3xl);
  border-top: var(--border-paper);
}
.term {
  display: grid;
  gap: var(--space-2xs);
  align-content: start;
  padding-block: var(--space-l);
  border-bottom: var(--border-paper);
}
.term dt {
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--c-on-paper-2);
}
.term dd { font-size: var(--fs-small); }

@media (min-width: 900px) {
  .terms { grid-template-columns: repeat(3, minmax(0, 1fr)); column-gap: var(--grid-gap); border-top: 0; }
  .term { border-top: var(--border-paper); border-bottom: 0; }
}

/* ==========================================================================
   03 Work
   ========================================================================== */
.work-group + .work-group { margin-top: var(--space-section); }

.group-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-s) var(--space-xl);
  margin-bottom: var(--grid-gap);
  padding-bottom: var(--space-l);
  border-bottom: var(--border-strong);
}
.group-title {
  display: flex;
  align-items: baseline;
  gap: var(--space-m);
  font-size: var(--fs-h3);
  font-weight: var(--fw-medium);
  letter-spacing: var(--tracking-title);
}
.group-letter {
  padding: 0.2rem 0.45rem;
  background: var(--c-accent);
  color: var(--c-on-accent);
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  font-weight: var(--fw-regular);
  transform: translateY(-0.2em);
}
.group-note { max-width: 44ch; font-size: var(--fs-small); color: var(--c-text-3); }

/* Shared project anatomy */
.project,
.game {
  display: flex;
  flex-direction: column;
  border: var(--border);
  background: var(--c-ink);
}
.project-media {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--c-ink-raised);
}
.project-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.55) brightness(0.9);
  transition: filter var(--dur-base) ease, transform 1.2s var(--ease-out);
}
.project:hover .project-media img,
.game:hover .project-media img { filter: none; transform: scale(1.025); }

.project-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-s);
  padding: var(--space-l);
}
.project-sector {
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--c-accent);
}
.project-title {
  font-size: var(--fs-h3);
  font-weight: var(--fw-medium);
  line-height: 1.2;
  letter-spacing: var(--tracking-title);
}
.project-text { max-width: 48ch; color: var(--c-text-2); }

.specs { display: grid; margin-top: auto; padding-top: var(--space-l); }
.specs > div {
  display: grid;
  grid-template-columns: 7.5rem minmax(0, 1fr);
  gap: var(--space-m);
  padding-block: 0.55rem;
  border-top: var(--border);
  font-size: var(--fs-small);
}
.specs dt {
  padding-top: 0.15em;
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--c-text-3);
}
.specs .status { color: var(--c-accent); }

/* Typographic card: used where no project imagery exists. Nothing is invented. */
.project-type { background: var(--c-ink-raised); }
.project-type .project-body { flex: none; }
.project-glyph {
  flex: 1;
  display: flex;
  align-items: flex-end;
  min-height: 9rem;
  padding: var(--space-l);
  border-bottom: var(--border);
  font-size: clamp(3rem, 2rem + 4vw, 5.5rem);
  font-weight: var(--fw-medium);
  line-height: 1;
  letter-spacing: -0.05em;
  white-space: nowrap;
  color: transparent;
  -webkit-text-stroke: 1px var(--c-line-strong);
}

.sim-grid { display: grid; gap: var(--grid-gap); }

@media (min-width: 700px) {
  .sim-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  /* 4 projects in 2 columns: feature, two image cards side by side, mirrored feature */
  .project-feature { grid-column: 1 / -1; }
}

@media (min-width: 1024px) {
  .sim-grid { grid-template-columns: repeat(12, minmax(0, 1fr)); }
  .project-feature {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
  }
  .project-feature .project-media { aspect-ratio: auto; min-height: 100%; }
  .project-feature .project-body { padding: var(--space-2xl) var(--space-xl); }
  .project-feature .project-title {
    font-size: var(--fs-h2);
    line-height: var(--lh-heading);
    letter-spacing: var(--tracking-heading);
  }
  .project-feature-flip { grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); }
  .project-feature-flip .project-media { order: 2; border-left: var(--border); }
  .project-media-top { grid-column: span 6; }
  .project-type { grid-column: span 3; }
  .project-type .specs > div { grid-template-columns: minmax(0, 1fr); gap: 0.15rem; }
}

/* Hover clip: script.js inserts the <video> on first hover; it fades in over the poster. */
.media-clip {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-base) ease;
}
.media-clip.is-playing { opacity: 1; }

.media-play {
  position: absolute;
  right: var(--space-s);
  bottom: var(--space-s);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.55rem;
  background: rgba(11, 12, 13, 0.72);
  border: var(--border);
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: 0.06em;
  color: var(--c-text-2);
  pointer-events: none;
  transition: opacity var(--dur-base) ease;
}
.media-play::before {
  content: "";
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 4px 0 4px 7px;
  border-color: transparent transparent transparent var(--c-accent);
}
.project-media.is-active .media-play { opacity: 0; }

/* Representative map for the NDA project: a canvas drawn by script.js. */
.project-map { background: var(--c-ink-sunken); }
@media (min-width: 1024px) {
  .project-feature-flip .project-map { min-height: 24rem; }
}
.map-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}
.map-fallback {
  position: absolute;
  inset: auto auto 0 0;
  padding: var(--space-l);
  font-size: clamp(3rem, 2rem + 4vw, 5.5rem);
  font-weight: var(--fw-medium);
  line-height: 1;
  letter-spacing: -0.05em;
  color: transparent;
  -webkit-text-stroke: 1px var(--c-line-strong);
}
.project-map.is-ready .map-fallback { display: none; }
.media-note {
  position: absolute;
  left: var(--space-s);
  bottom: var(--space-s);
  padding: 0.3rem 0.55rem;
  background: rgba(11, 12, 13, 0.72);
  border: var(--border);
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: 0.04em;
  color: var(--c-text-2);
}

/* Games */
.games-grid { display: grid; gap: var(--grid-gap); }
.game-body { display: grid; gap: var(--space-m); align-content: start; padding: var(--space-l); }
.game-title {
  font-size: var(--fs-h3);
  font-weight: var(--fw-medium);
  letter-spacing: var(--tracking-title);
}
.game-stat {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-s);
  padding-bottom: var(--space-s);
}
.game-number {
  font-size: clamp(3rem, 2rem + 3.6vw, 5.25rem);
  font-weight: var(--fw-medium);
  line-height: 0.9;
  letter-spacing: -0.045em;
  font-variant-numeric: tabular-nums;
}
.game-unit { font-family: var(--font-mono); font-size: var(--fs-small); color: var(--c-text-2); }
.specs-inline { padding-top: 0; }

/* Steam row: no sales figure, so description + specs pinned to the bottom */
.game-compact .game-body { flex: 1; display: flex; flex-direction: column; gap: var(--space-s); }

/* Browser row: four short titles, so the body carries a name and one line only */
.group-head-sub {
  margin-top: var(--space-3xl);
  padding-bottom: var(--space-s);
  border-bottom: var(--border);
}
.group-subtitle {
  font-size: var(--fs-body);
  font-weight: var(--fw-medium);
  letter-spacing: var(--tracking-title);
}
.game-web .game-body { gap: var(--space-xs); }
.game-web .game-title { font-size: var(--fs-lead); }
.game-web .project-text { font-size: var(--fs-small); }
.game-web .specs { padding-top: var(--space-m); }
.game-web .specs > div { grid-template-columns: minmax(0, 1fr); gap: var(--space-2xs); }

@media (min-width: 700px) {
  .games-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (min-width: 700px) and (max-width: 1023px) {
  .game-compact:last-child { grid-column: 1 / -1; }
  /* the browser row is an even four, so its last card keeps its own column */
  .games-grid-web .game-compact:last-child { grid-column: auto; }
}
@media (min-width: 1024px) {
  .games-grid { grid-template-columns: repeat(12, minmax(0, 1fr)); }
  .game { grid-column: span 6; }
  .game-compact { grid-column: span 4; }
  .games-grid-web .game-compact { grid-column: span 3; }
  .game-body { padding: var(--space-xl); }
  .game-compact .game-body { padding: var(--space-l); }
}

.publisher-row {
  display: grid;
  gap: var(--space-l);
  margin-top: var(--grid-gap);
  padding: var(--space-l);
  border: var(--border);
  background: var(--c-ink-raised);
}
.publisher-lead { display: grid; gap: var(--space-xs); align-content: start; }
.publisher-names {
  display: flex;
  flex-wrap: wrap;
  column-gap: 0.4em;
  font-size: clamp(1.6rem, 1.1rem + 1.8vw, 2.75rem);
  font-weight: var(--fw-medium);
  line-height: 1.05;
  letter-spacing: var(--tracking-heading);
}
.publisher-names span { color: var(--c-text-3); }
.publisher-names .name { white-space: nowrap; }

@media (max-width: 699px) {
  .publisher-names { flex-direction: column; }
  .publisher-names span[aria-hidden="true"] { display: none; }
}
.publisher-row .specs { margin-top: 0; padding-top: 0; }

@media (min-width: 1024px) {
  .publisher-row {
    grid-template-columns: minmax(0, 3fr) minmax(0, 5fr) minmax(0, 4fr);
    align-items: center;
    gap: var(--grid-gap);
    padding: var(--space-xl);
  }
}

/* ==========================================================================
   04 Stack — dense spec sheet
   ========================================================================== */
.section-stack { padding-block: var(--space-3xl); border-top: var(--border); }
.stack-layout { display: grid; gap: var(--space-xl); }
.stack-layout .section-head { margin-bottom: 0; }

.stack {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: var(--border);
  border-left: var(--border);
}
.stack-col {
  display: grid;
  align-content: start;
  gap: 0.35rem;
  padding: var(--space-l) var(--space-m);
  border-right: var(--border);
  border-bottom: var(--border);
}
.stack-col:last-child { grid-column: 1 / -1; }
.stack dt {
  margin-bottom: var(--space-s);
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--c-accent);
}
.stack dd { font-size: var(--fs-small); line-height: 1.45; }

@media (min-width: 700px) {
  .stack { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .stack-col:last-child { grid-column: span 2; }
}
@media (min-width: 1024px) {
  .stack-layout {
    grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
    align-items: start;
    gap: var(--grid-gap);
  }
  .stack-layout .section-head { grid-template-columns: minmax(0, 1fr); }
  .stack-layout .section-head .section-title { grid-column: auto; }
  .stack { grid-template-columns: repeat(5, minmax(0, 1fr)); }
  .stack-col,
  .stack-col:last-child { grid-column: auto; padding: var(--space-l); }
}

/* ==========================================================================
   05 Who
   ========================================================================== */
.section-who { border-top: var(--border); }
.who-layout { display: grid; gap: var(--space-2xl); }

.who-person { display: grid; gap: var(--space-l); align-content: start; }
.who-name {
  max-width: 12ch;
  font-size: var(--fs-h2);
  font-weight: var(--fw-medium);
  line-height: 1.05;
  letter-spacing: var(--tracking-heading);
}
.who-role { font-family: var(--font-mono); font-size: var(--fs-small); color: var(--c-text-2); }

.who-portrait {
  margin: 0;
  max-width: 22rem;
  padding-bottom: var(--space-m);
  /* no frame: the cut-out just sits on the page, the accent rule gives it a base line */
  border-bottom: 2px solid var(--c-accent);
}
.who-portrait img {
  display: block;
  width: 100%;
  height: auto;            /* the height attribute would otherwise beat aspect-ratio */
  aspect-ratio: 3 / 4;
  object-fit: cover;
}

.who-text { display: grid; gap: var(--space-m); margin-bottom: var(--space-2xl); }
.who-text p { max-width: 62ch; color: var(--c-text-2); }
.who-text:last-child { margin-bottom: 0; }

.who-quote { padding-left: var(--space-l); border-left: 2px solid var(--c-accent); }
.who-quote p {
  font-size: var(--fs-h2);
  font-weight: var(--fw-regular);
  line-height: 1.12;
  letter-spacing: var(--tracking-heading);
  text-wrap: balance;
}

@media (min-width: 1024px) {
  .who-layout { grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); gap: var(--grid-gap); }
  .who-person { position: sticky; top: calc(var(--header-h) + var(--space-xl)); }
  .who-quote { padding-left: var(--space-xl); }
}

/* ==========================================================================
   06 Contact
   ========================================================================== */
.section-contact { border-top: var(--border); }

.contact-title {
  max-width: 14ch;
  margin-top: var(--space-2xl);
  font-size: var(--fs-display);
  font-weight: var(--fw-medium);
  line-height: var(--lh-tight);
  letter-spacing: var(--tracking-display);
  text-wrap: balance;
}

.contact-email {
  display: inline-flex;
  align-items: center;
  gap: var(--space-m);
  max-width: 100%;
  margin-top: var(--space-2xl);
  padding-bottom: var(--space-xs);
  border-bottom: 2px solid var(--c-accent);
  font-size: clamp(1.25rem, 0.7rem + 2.6vw, 2.75rem);
  letter-spacing: -0.02em;
  transition: color var(--dur-fast) ease;
}
.contact-email-text { overflow-wrap: anywhere; }
.contact-email-arrow {
  flex: none;
  width: 0.7em;
  height: 0.7em;
  color: var(--c-accent);
  transition: transform var(--dur-base) var(--ease-out);
}
.contact-email:hover { color: var(--c-accent); }
.contact-email:hover .contact-email-arrow { transform: translate(3px, -3px); }

.contact-grid {
  display: grid;
  gap: var(--space-2xl);
  margin-top: var(--space-3xl);
  padding-top: var(--space-2xl);
  border-top: var(--border);
}
.contact-brief-title {
  margin-bottom: var(--space-m);
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--c-text-3);
}
.brief-list { counter-reset: brief; }
.brief-list li {
  counter-increment: brief;
  display: flex;
  align-items: baseline;
  gap: var(--space-m);
  padding-block: var(--space-s);
  border-bottom: var(--border);
  font-size: var(--fs-h3);
  font-weight: var(--fw-medium);
  letter-spacing: var(--tracking-title);
}
.brief-list li::before {
  content: counter(brief, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  font-weight: var(--fw-regular);
  color: var(--c-accent);
}

.contact-side { display: grid; gap: var(--space-l); align-content: start; }
.contact-reply { font-size: var(--fs-lead); color: var(--c-text-2); }
.contact-actions { display: flex; flex-wrap: wrap; gap: var(--space-s); }

@media (min-width: 900px) {
  .contact-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--grid-gap); }
  .contact-side { padding-left: var(--space-2xl); }
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  padding-block: var(--space-3xl) var(--space-xl);
  border-top: var(--border);
  background: var(--c-ink-sunken);
  font-size: var(--fs-small);
  color: var(--c-text-2);
}
.footer-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-xl) var(--grid-gap);
}
.footer-brand { grid-column: 1 / -1; display: grid; gap: var(--space-xs); }
.footer-brand .brand-word { color: var(--c-text); }
.footer-legal { max-width: 32ch; }
.footer-col { display: grid; gap: var(--space-2xs); align-content: start; }
.footer-col:last-of-type { grid-column: 1 / -1; }
.footer-label {
  margin-bottom: var(--space-xs);
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--c-text-3);
}
.footer-col a:hover { color: var(--c-accent); }
.footer-bottom {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-s);
  padding-top: var(--space-l);
  border-top: var(--border);
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  color: var(--c-text-3);
}
.footer-top:hover { color: var(--c-text); }

@media (min-width: 900px) {
  .footer-grid { grid-template-columns: minmax(0, 4fr) repeat(3, minmax(0, 2.66fr)); }
  .footer-brand,
  .footer-col:last-of-type { grid-column: auto; }
}

/* ==========================================================================
   Reduced motion
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .project:hover .project-media img,
  .game:hover .project-media img { transform: none; }
}