/* ===================================================================
   Liam Ramsden — portfolio
   Palette: drafting-table blueprint, in two settings — dark (ink on
   navy) and light (ink on drafting paper). Toggled via
   html[data-theme], persisted per viewer in localStorage.
=================================================================== */

:root{
  color-scheme: dark;
  --bg: #0A1626;
  --bg-2: #0E1D33;
  --panel-bg: rgba(14,29,51,0.45);
  --scrim: rgba(10,22,38,0.94);
  --scrim-edge: rgba(10,22,38,0);
  --line: rgba(125,193,242,0.16);
  --line-strong: rgba(125,193,242,0.32);
  --blue: #7DC1F2;
  --blue-dim: #4C7A9E;
  --blue-tint: rgba(125,193,242,0.06);
  --accent: #FF6A55;
  --accent-tint-08: rgba(255,106,85,0.08);
  --accent-tint-05: rgba(255,106,85,0.05);
  --good: #7ED9A6;
  --ink: #E9F1FA;
  --ink-dim: #9FB4CC;
  --ink-faint: #5D7591;

  --f-display: 'Big Shoulders Display', sans-serif;
  --f-body: 'IBM Plex Sans', sans-serif;
  --f-mono: 'IBM Plex Mono', monospace;

  --ease: cubic-bezier(.16,.8,.24,1);
}

:root[data-theme="light"]{
  color-scheme: light;
  --bg: #F5F2EC;
  --bg-2: #EAE6DC;
  --panel-bg: rgba(255,255,255,0.55);
  --scrim: rgba(245,242,236,0.94);
  --scrim-edge: rgba(245,242,236,0);
  --line: rgba(29,111,165,0.14);
  --line-strong: rgba(29,111,165,0.30);
  --blue: #1D6FA5;
  --blue-dim: #7FA8C4;
  --blue-tint: rgba(29,111,165,0.06);
  --accent: #D8442B;
  --accent-tint-08: rgba(216,68,43,0.08);
  --accent-tint-05: rgba(216,68,43,0.05);
  --good: #1F9D6C;
  --ink: #16202B;
  --ink-dim: #45566B;
  --ink-faint: #7A8A9C;
}

*, *::before, *::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin:0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--f-body);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
  cursor: none;
}
@media (max-width: 860px), (hover: none){
  body{ cursor: auto; }
}

h1,h2,h3,h4{
  font-family: var(--f-display);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.01em;
  margin: 0;
  color: var(--ink);
}
p{ margin: 0; }
a{ color: var(--blue); text-decoration: none; }
.mono{ font-family: var(--f-mono); text-transform: uppercase; letter-spacing: 0.08em; font-size: 0.72rem; color: var(--ink-dim); }

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

/* ---------- backdrop ---------- */
#webgl-bg{
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
  display: block;
}

.grain{
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 0.035;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* keeps the WebGL linework from ever competing with the text column —
   the 3D scene stays visible in the margins, the reading column sits
   on a solid scrim regardless of what the backdrop is doing */
.scrim{
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: radial-gradient(ellipse 640px 100% at center, var(--scrim) 45%, var(--scrim-edge) 78%);
}

/* ---------- cursor ---------- */
.cursor-dot, .cursor-ring{
  position: fixed;
  top:0; left:0;
  border-radius: 50%;
  pointer-events: none;
  z-index: 500;
  transform: translate(-50%,-50%);
}
.cursor-dot{
  width: 6px; height: 6px;
  background: var(--accent);
}
.cursor-ring{
  width: 34px; height: 34px;
  border: 1px solid var(--line-strong);
  transition: width .25s var(--ease), height .25s var(--ease), border-color .25s var(--ease), background .25s var(--ease);
}
.cursor-ring.is-hover{
  width: 56px; height: 56px;
  border-color: var(--accent);
  background: var(--accent-tint-08);
}
@media (max-width: 860px), (hover: none){
  .cursor-dot, .cursor-ring{ display: none; }
}

/* ---------- progress rail ---------- */
.progress-rail{
  position: fixed;
  top: 0; left: 0;
  width: 100%;
  height: 2px;
  background: var(--line);
  z-index: 400;
}
.progress-fill{
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--blue), var(--accent));
}

/* ---------- brand ---------- */
.brand{
  position: fixed;
  top: 28px; left: 32px;
  z-index: 300;
  font-family: var(--f-display);
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: 0.05em;
  color: var(--ink);
}
.brand span{ color: var(--accent); }

.theme-toggle{
  position: fixed;
  top: 30px; left: 76px;
  z-index: 300;
  appearance: none;
  background: none;
  border: 1px solid var(--line-strong);
  color: var(--ink-dim);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  padding: 5px 12px;
  cursor: none;
  transition: border-color .3s var(--ease), color .3s var(--ease);
}
.theme-toggle:hover{ border-color: var(--accent); color: var(--accent); }

@media (max-width: 640px){
  .theme-toggle{ top: 22px; left: 64px; padding: 4px 9px; }
}

/* ---------- fixed title block ---------- */
.title-block{
  position: fixed;
  top: 28px; right: 32px;
  z-index: 300;
  text-align: right;
  max-width: 260px;
  pointer-events: none;
}
.title-block__row{
  font-family: var(--f-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--ink-dim);
}
.title-block__num{ color: var(--accent); font-weight: 500; }
.title-block__div{ margin: 0 4px; color: var(--ink-faint); }
.title-block__name{
  font-size: 1.4rem;
  margin-top: 4px;
  transition: opacity .3s var(--ease), transform .3s var(--ease);
}
.title-block__sub{
  font-family: var(--f-mono);
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  color: var(--ink-faint);
  margin-top: 6px;
  text-transform: uppercase;
}

@media (max-width: 640px){
  .title-block{ display: none; }
  .brand{ top: 20px; left: 20px; }
}

/* ---------- dot nav ---------- */
.dot-nav{
  position: fixed;
  right: 32px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 300;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.dot-nav__dot{
  position: relative;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--ink-faint);
  transition: background .3s var(--ease), transform .3s var(--ease);
}
.dot-nav__dot.is-active{
  background: var(--accent);
  transform: scale(1.4);
}
.dot-nav__dot span{
  position: absolute;
  right: 20px; top: 50%;
  transform: translateY(-50%);
  font-family: var(--f-mono);
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-dim);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s var(--ease);
}
.dot-nav__dot:hover span{ opacity: 1; }

@media (max-width: 860px){
  .dot-nav{ display: none; }
}

/* ---------- layout shell ---------- */
main{ position: relative; z-index: 2; }

.sheet{
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 140px 32px 100px;
  position: relative;
  border-bottom: 1px solid var(--line);
}
.sheet-frame{
  width: 100%;
  max-width: 980px;
  margin: 0 auto;
}
.kicker{
  font-family: var(--f-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 18px;
  display: block;
}
.sheet-heading{
  font-size: clamp(1.6rem, 3.4vw, 2.6rem);
  line-height: 1.15;
  max-width: 820px;
  margin-bottom: 40px;
}

/* ---------- reveal ---------- */
.reveal{
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .8s var(--ease), transform .8s var(--ease);
}
.reveal.is-visible{
  opacity: 1;
  transform: translateY(0);
}

/* ---------- cover ---------- */
.sheet--cover{
  justify-content: center;
  align-items: flex-start;
}
.cover-name{
  display: flex;
  flex-direction: column;
  font-size: clamp(3.2rem, 11vw, 8.5rem);
  line-height: 0.92;
  font-weight: 800;
  margin-bottom: 28px;
}
.cover-name span:last-child{ color: var(--blue); }
.cover-role{
  font-family: var(--f-mono);
  font-size: clamp(0.95rem, 1.6vw, 1.2rem);
  letter-spacing: 0.04em;
  color: var(--ink-dim);
  margin-bottom: 8px;
}
.cover-role__div{ color: var(--accent); margin: 0 6px; }
.cover-thesis{ color: var(--ink-dim); max-width: 56ch; font-size: 1.02rem; margin: 18px 0 20px; }
.cover-loc{ color: var(--ink-faint); margin-bottom: 44px; }
.cover-cta{ display: flex; gap: 16px; flex-wrap: wrap; }

.scroll-cue{
  position: absolute;
  bottom: 40px; left: 32px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--f-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.scroll-cue i{
  width: 1px; height: 30px;
  background: linear-gradient(var(--accent), transparent);
  display: block;
  animation: scrollcue 1.8s ease-in-out infinite;
}
@keyframes scrollcue{
  0%{ transform: scaleY(0); transform-origin: top; opacity: 0; }
  40%{ transform: scaleY(1); transform-origin: top; opacity: 1; }
  60%{ transform: scaleY(1); transform-origin: bottom; opacity: 1; }
  100%{ transform: scaleY(0); transform-origin: bottom; opacity: 0; }
}

/* ---------- buttons ---------- */
.btn{
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 15px 30px;
  font-family: var(--f-mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink);
  border: 1px solid var(--line-strong);
  overflow: hidden;
  transition: border-color .3s var(--ease), color .3s var(--ease);
}
.btn::before{
  content: '';
  position: absolute;
  inset: 0;
  background: var(--blue);
  transform: translateY(101%);
  transition: transform .35s var(--ease);
  z-index: -1;
}
.btn:hover{ color: var(--bg); border-color: var(--blue); }
.btn:hover::before{ transform: translateY(0); }
.btn--primary{ border-color: var(--accent); }
.btn--primary::before{ background: var(--accent); }
.btn--primary:hover{ color: var(--bg); border-color: var(--accent); }

/* ---------- profile ---------- */
.profile-grid{
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 60px;
}
.profile-lead{ font-size: 1.05rem; color: var(--ink-dim); max-width: 52ch; }
.profile-facts{
  display: grid;
  gap: 22px;
  margin: 0;
  border-left: 1px solid var(--line);
  padding-left: 28px;
}
.profile-facts dt{ font-family: var(--f-mono); font-size: 0.66rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-faint); margin-bottom: 4px; }
.profile-facts dd{ margin: 0; font-size: 1rem; color: var(--ink); }

@media (max-width: 780px){
  .profile-grid{ grid-template-columns: 1fr; gap: 32px; }
  .profile-facts{ border-left: none; padding-left: 0; border-top: 1px solid var(--line); padding-top: 24px; }
}

/* ---------- capabilities ---------- */
.cap-grid{
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 48px 60px;
}
.cap-group__title{ margin-bottom: 18px; display: block; color: var(--blue); }
.skill-tags{
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.skill-tags li{
  border: 1px solid var(--line-strong);
  padding: 8px 16px;
  font-family: var(--f-mono);
  font-size: 0.78rem;
  letter-spacing: 0.03em;
  color: var(--ink);
  background: var(--blue-tint);
}
.cap-note{ margin: 10px 0 14px; font-size: 0.85rem; color: var(--ink-faint); max-width: 46ch; }

@media (max-width: 780px){
  .cap-grid{ grid-template-columns: 1fr; gap: 36px; }
}

/* ---------- field note / sync-gate demo ---------- */
.fieldnote{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
  border: 1px solid var(--line-strong);
  background: var(--panel-bg);
  padding: 32px;
  margin-top: 56px;
}
.fieldnote-title{ font-size: 1.4rem; margin-bottom: 14px; }
.fieldnote-desc{ color: var(--ink-dim); font-size: 0.92rem; }
.gate-demo{ display: flex; flex-direction: column; gap: 12px; }
.gate-demo canvas{
  width: 100%;
  aspect-ratio: 4/3;
  display: block;
  border: 1px solid var(--line-strong);
  background: radial-gradient(circle at 50% 40%, var(--bg-2), var(--bg));
}
.gate-legend{
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 0.66rem;
  color: var(--ink-faint);
}
.gate-legend span{ display: flex; align-items: center; gap: 6px; }
.gate-dot{ width: 9px; height: 9px; display: inline-block; }
.gate-dot--fg{ background: var(--accent); }
.gate-dot--bg{ background: var(--blue); }
.gate-dot--gate{ background: var(--good); }

@media (max-width: 780px){
  .fieldnote{ grid-template-columns: 1fr; }
}

/* ---------- fieldwork ---------- */
.case-list{ display: grid; gap: 28px; margin-bottom: 56px; }
.case{
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 24px;
  border: 1px solid var(--line);
  background: var(--panel-bg);
  padding: 32px;
}
.case__index{
  font-size: 1.6rem;
  color: var(--blue-dim);
}
.case__cat{ margin-bottom: 10px; display: block; }
.case__title{ font-size: 1.5rem; margin-bottom: 8px; }
.case__role{ margin-bottom: 20px; display: block; }
.case__desc{ color: var(--ink-dim); max-width: 68ch; }
.case__chips{ margin-top: 24px; }
.case__stats--top{ margin-bottom: 52px; }
.case__cols{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 24px;
}
.case__cols h4{ margin-bottom: 8px; color: var(--blue); }
.case__cols p{ color: var(--ink-faint); font-size: 0.88rem; }
.case__stats{
  list-style: none;
  display: flex;
  gap: 36px;
  padding: 0;
  margin: 0;
  border-top: 1px solid var(--line);
  padding-top: 20px;
}
.case__stats strong{ display: block; font-family: var(--f-display); font-size: 1.6rem; color: var(--accent); }
.case__stats span{ display: block; font-family: var(--f-mono); font-size: 0.65rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-faint); line-height: 1.5; margin-top: 4px; }
.case__stats > li{ flex: 1; max-width: 220px; }
.case__quote{
  margin: 20px 0 0;
  padding-left: 18px;
  border-left: 2px solid var(--accent);
  font-style: italic;
  color: var(--ink-dim);
  max-width: 62ch;
}
.case__quote cite{ display: block; margin-top: 10px; font-style: normal; font-family: var(--f-mono); font-size: 0.7rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink-faint); }

.other-work h4{ margin-bottom: 16px; display: block; }
.other-work ul{ list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
.other-work li{ color: var(--ink-faint); font-size: 0.9rem; padding-left: 18px; position: relative; }
.other-work li::before{ content: '—'; position: absolute; left: 0; color: var(--blue-dim); }
.other-work span{ color: var(--ink); font-weight: 500; }

@media (max-width: 700px){
  .case{ grid-template-columns: 1fr; padding: 24px; }
  .case__cols{ grid-template-columns: 1fr; }
  .case__stats{ flex-wrap: wrap; gap: 24px; }
}

/* ---------- method ---------- */
.method-list{ list-style: none; margin: 0; padding: 0; display: grid; gap: 0; }
.method-item{
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 24px;
  padding: 30px 0;
  border-top: 1px solid var(--line);
}
.method-item:last-child{ border-bottom: 1px solid var(--line); }
.method-item__num{ font-size: 1.1rem; color: var(--accent); }
.method-item h3{ font-size: 1.15rem; margin-bottom: 8px; }
.method-item p{ color: var(--ink-dim); max-width: 60ch; }

@media (max-width: 600px){
  .method-item{ grid-template-columns: 50px 1fr; }
}

/* ---------- contact ---------- */
.sheet--contact{ padding-bottom: 40px; justify-content: flex-start; }
.contact-lead{ color: var(--ink-dim); margin-bottom: 36px; font-size: 1.05rem; }
.contact-email{
  appearance: none;
  background: none;
  border: 1px solid var(--line-strong);
  color: var(--ink);
  font-family: var(--f-display);
  font-size: clamp(1.6rem, 4vw, 2.6rem);
  font-weight: 700;
  padding: 22px 30px;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 20px;
  width: 100%;
  max-width: 640px;
  cursor: none;
  transition: border-color .3s var(--ease), background .3s var(--ease);
  margin-bottom: 48px;
}
.contact-email:hover{ border-color: var(--accent); background: var(--accent-tint-05); }
.contact-email__hint{ flex-shrink: 0; }
.contact-meta{ display: flex; gap: 80px; flex-wrap: wrap; margin-bottom: 60px; }
.contact-meta h4{ margin-bottom: 10px; }
.contact-meta p{ color: var(--ink-dim); }
.contact-social{ display: flex; gap: 20px; }
.contact-social a{ color: var(--ink-dim); }
.contact-social a:hover{ color: var(--accent); }

.site-footer{
  margin-top: auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  font-family: var(--f-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.site-footer a{ color: var(--ink-faint); }
.site-footer a:hover{ color: var(--accent); }

@media (max-width: 600px){
  .sheet{ padding: 120px 20px 80px; }
  .contact-email{ flex-direction: column; align-items: flex-start; gap: 8px; }
}