/* ==========================================================================
   TOKENS
   ========================================================================== */
:root{
  --black:        #0a0a08;
  --charcoal:      #15140f;
  --panel:         #1b1a13;
  --warm-grey:     #8c8677;
  --warm-grey-dim: #5c584d;
  --off-white:     #eeeae0;
  --off-white-dim: #cfcabc;
  --accent:        #c1852f;
  --accent-soft:   rgba(193,133,47,0.5);
  --accent-wash:   rgba(193,133,47,0.08);
  --rule:          rgba(238,234,224,0.12);
  --rule-strong:   rgba(238,234,224,0.22);

  --serif: 'IBM Plex Serif', Georgia, 'Times New Roman', serif;
  --mono:  'IBM Plex Mono', 'SFMono-Regular', Consolas, monospace;

  --nav-h: 88px;
  --nav-h-compact: 58px;

  --ease: cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }

@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *,*::before,*::after{ animation-duration:0.001ms !important; animation-iteration-count:1 !important; transition-duration:0.001ms !important; }
}

body{
  margin:0;
  background:var(--black);
  color:var(--off-white);
  font-family:var(--mono);
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

a{ color:inherit; text-decoration:none; }
ul{ margin:0; padding:0; list-style:none; }
h1,h2,h3{ font-family:var(--serif); font-weight:500; margin:0; color:var(--off-white); }
code{ font-family:var(--mono); color:var(--accent); font-size:0.92em; }

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

/* focus visibility */
a:focus-visible, button:focus-visible{
  outline:1px solid var(--accent);
  outline-offset:4px;
}

/* ==========================================================================
   AMBIENT TEXTURE LAYERS
   ========================================================================== */
.grid-overlay{
  position:fixed; inset:0; z-index:0; pointer-events:none;
  background-image:
    linear-gradient(var(--rule) 1px, transparent 1px),
    linear-gradient(90deg, var(--rule) 1px, transparent 1px);
  background-size:64px 64px;
  opacity:0.35;
  mask-image:radial-gradient(ellipse 80% 60% at 50% 20%, black 40%, transparent 90%);
}

.vignette{
  position:fixed; inset:0; z-index:0; pointer-events:none;
  background:radial-gradient(ellipse 120% 90% at 50% 0%, transparent 50%, var(--black) 100%);
}

.scanlines{
  position:fixed; inset:0; z-index:1; pointer-events:none;
  background:repeating-linear-gradient(
    to bottom,
    rgba(255,255,255,0.018) 0px,
    rgba(255,255,255,0.018) 1px,
    transparent 1px,
    transparent 3px
  );
  opacity:0.5;
}

/* ==========================================================================
   BOOT SCREEN
   ========================================================================== */
#boot-screen{
  position:fixed; inset:0; z-index:100;
  background:var(--black);
  display:flex; align-items:center; justify-content:center;
  padding:6vw;
  transition:opacity 0.6s var(--ease), visibility 0.6s var(--ease);
}
#boot-screen.hidden{ opacity:0; visibility:hidden; }
#boot-log{
  font-family:var(--mono);
  font-size:13px;
  line-height:1.9;
  color:var(--warm-grey);
  white-space:pre-wrap;
  max-width:640px;
  margin:0;
}
#boot-log .ok{ color:var(--accent); }

/* ==========================================================================
   NAVBAR
   ========================================================================== */
#navbar{
  position:fixed; top:0; left:0; right:0; z-index:50;
  height:var(--nav-h);
  background:rgba(10,10,8,0.72);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--rule);
  transition:height 0.35s var(--ease), background 0.35s var(--ease);
}
#navbar.compact{ height:var(--nav-h-compact); }

.nav-inner{
  max-width:1180px; height:100%;
  margin:0 auto; padding:0 32px;
  display:flex; align-items:center; justify-content:space-between;
}

.nav-mark{
  display:flex; flex-direction:column; gap:2px;
  line-height:1.1;
}
.mark-index{
  font-size:10px; letter-spacing:0.14em; color:var(--accent);
}
.mark-name{
  font-family:var(--serif); font-size:16px; letter-spacing:0.04em; color:var(--off-white);
}

.nav-links{ display:flex; gap:36px; }
.nav-links a{
  position:relative;
  font-size:12px; letter-spacing:0.1em; text-transform:uppercase;
  color:var(--warm-grey);
  transition:color 0.25s var(--ease);
  padding-bottom:4px;
}
.nav-links a::before{
  content:attr(data-label);
  color:var(--accent);
  margin-right:6px;
  font-size:10px;
}
.nav-links a::after{
  content:''; position:absolute; left:0; right:0; bottom:0; height:1px;
  background:var(--accent);
  transform:scaleX(0); transform-origin:left;
  transition:transform 0.3s var(--ease);
}
.nav-links a:hover{ color:var(--off-white); }
.nav-links a:hover::after{ transform:scaleX(1); }

#nav-toggle{
  display:none; background:none; border:1px solid var(--rule-strong);
  width:40px; height:40px; border-radius:2px;
  flex-direction:column; align-items:center; justify-content:center; gap:5px;
  cursor:pointer;
}
#nav-toggle span{ width:18px; height:1px; background:var(--off-white); }

#nav-mobile{
  display:none;
  flex-direction:column;
  background:var(--charcoal);
  border-bottom:1px solid var(--rule);
}
#nav-mobile a{
  padding:16px 32px;
  border-top:1px solid var(--rule);
  font-size:13px; letter-spacing:0.08em; text-transform:uppercase; color:var(--off-white-dim);
}
#nav-mobile.open{ display:flex; }

/* ==========================================================================
   LAYOUT / SECTIONS
   ========================================================================== */
main{ position:relative; z-index:2; }

.section{
  max-width:1180px;
  margin:0 auto;
  padding:160px 32px 120px;
  border-bottom:1px solid var(--rule);
  opacity:0;
  transform:translateY(24px);
  transition:opacity 0.9s var(--ease), transform 0.9s var(--ease);
}
.section.in-view{ opacity:1; transform:translateY(0); }
.section:last-of-type{ border-bottom:none; }

.section-head{
  display:flex; align-items:baseline; gap:20px;
  margin-bottom:48px;
}
.section-index{
  font-size:13px; color:var(--accent); letter-spacing:0.1em;
}
.section-head h2{
  font-size:clamp(28px, 3.4vw, 40px);
  letter-spacing:0.01em;
}
.section-rule{ flex:1; height:1px; background:var(--rule-strong); }

.section-intro{
  max-width:620px;
  color:var(--off-white-dim);
  margin:-24px 0 48px;
  font-size:14.5px;
}

/* ==========================================================================
   HERO
   ========================================================================== */
.hero{
  min-height:100vh;
  display:flex; flex-direction:column; justify-content:center;
  padding-top:var(--nav-h);
  border-bottom:1px solid var(--rule);
  position:relative;
}

.hero-eyebrow{
  display:flex; align-items:center; gap:10px;
  font-size:11px; letter-spacing:0.16em; color:var(--warm-grey);
  margin-bottom:36px;
  text-transform:uppercase;
}
.hero-eyebrow .dot{
  width:6px; height:6px; border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 10px 2px var(--accent-soft);
  animation:pulse 2.4s ease-in-out infinite;
}
@keyframes pulse{
  0%,100%{ opacity:1; } 50%{ opacity:0.35; }
}

.hero-name{
  font-size:clamp(56px, 11vw, 128px);
  line-height:0.95;
  letter-spacing:-0.01em;
  margin-bottom:28px;
}
.name-line{ display:block; }
.accent-ink{ color:var(--accent); font-style:italic; }

.hero-role{
  font-family:var(--serif);
  font-size:clamp(18px,2.2vw,24px);
  color:var(--off-white-dim);
  margin:0 0 12px;
}
.hero-thesis{
  max-width:520px;
  color:var(--warm-grey);
  font-size:14.5px;
  margin:0 0 56px;
}

.hero-terminal{
  border:1px solid var(--rule-strong);
  background:var(--panel);
  padding:20px 24px;
  max-width:560px;
  border-left:2px solid var(--accent);
}
.term-label{
  display:block;
  font-size:10.5px; letter-spacing:0.14em; color:var(--warm-grey);
  margin-bottom:10px;
}
.term-line{ margin:0; font-size:14.5px; color:var(--off-white); }
.prompt{ color:var(--accent); margin-right:8px; }
.cursor{
  display:inline-block;
  color:var(--accent);
  animation:blink 1s steps(1) infinite;
}
@keyframes blink{ 50%{ opacity:0; } }

.hero-scroll-cue{
  position:absolute; left:32px; bottom:40px;
  display:flex; align-items:center; gap:12px;
  font-size:10px; letter-spacing:0.16em; color:var(--warm-grey-dim);
}
.scroll-line{
  width:1px; height:44px; background:var(--rule-strong); position:relative; overflow:hidden;
}
.scroll-line::after{
  content:''; position:absolute; top:-44px; left:0; width:1px; height:44px;
  background:var(--accent);
  animation:scrollDrop 2.2s ease-in-out infinite;
}
@keyframes scrollDrop{
  0%{ transform:translateY(0); } 100%{ transform:translateY(88px); }
}

.hero-margin{
  position:absolute; right:32px; top:calc(var(--nav-h) + 40px);
  display:flex; flex-direction:column; gap:8px;
  font-size:10px; letter-spacing:0.1em; color:var(--warm-grey-dim);
  text-align:right;
}

/* ==========================================================================
   RESEARCH NOTEBOOK
   ========================================================================== */
.notebook{
  display:grid;
  grid-template-columns:1.5fr 1fr;
  gap:64px;
}

.notebook-entry-tag{
  font-size:11px; letter-spacing:0.12em; color:var(--accent);
  margin:0 0 18px;
}
.notebook-body{
  font-size:15px;
  color:var(--off-white-dim);
  max-width:560px;
  margin:0 0 20px;
}
.stamp{
  display:inline-block;
  margin-top:24px;
  padding:10px 16px;
  border:1px solid var(--accent-soft);
  color:var(--accent);
  font-size:10.5px; letter-spacing:0.14em;
  transform:rotate(-2deg);
}

.notebook-side{ display:flex; flex-direction:column; gap:36px; }
.side-block h3{
  font-size:13px; letter-spacing:0.1em; text-transform:uppercase;
  color:var(--warm-grey);
  font-family:var(--mono); font-weight:600;
  margin:0 0 14px;
  padding-bottom:10px;
  border-bottom:1px solid var(--rule);
}
.tag-list li{
  position:relative;
  padding-left:18px;
  margin-bottom:9px;
  font-size:14px;
  color:var(--off-white-dim);
}
.tag-list li::before{
  content:'—';
  position:absolute; left:0; color:var(--warm-grey-dim);
}
.tag-list.focus li{ color:var(--accent); }
.tag-list.focus li::before{ content:'▸'; color:var(--accent); }
.tag-list.future li::before{ content:'·'; }

/* ==========================================================================
   EXPERIMENTS
   ========================================================================== */
.experiment-list{
  display:flex; flex-direction:column;
}
.experiment{
  padding:34px 0;
  border-top:1px solid var(--rule);
  display:grid;
  grid-template-columns:200px 1fr;
  gap:32px;
  transition:padding-left 0.3s var(--ease);
}
.experiment:last-child{ border-bottom:1px solid var(--rule); }
.experiment:hover{ padding-left:10px; }

.exp-meta{
  display:flex; flex-direction:column; gap:8px;
}
.exp-no{ font-size:12px; color:var(--off-white-dim); letter-spacing:0.06em; }
.exp-status{
  font-size:10px; letter-spacing:0.1em;
  color:var(--warm-grey-dim);
}
.experiment[data-status="progress"] .exp-status{ color:var(--accent); }
.experiment[data-status="complete"] .exp-status{ color:#7a8f74; }

.exp-title{
  font-size:22px;
  margin-bottom:12px;
}
.exp-abstract{
  color:var(--off-white-dim);
  font-size:14px;
  max-width:620px;
  margin:0 0 18px;
}
.exp-stack{ display:flex; gap:10px; flex-wrap:wrap; margin-bottom:16px; }
.exp-stack span{
  font-size:10.5px; letter-spacing:0.06em;
  color:var(--warm-grey);
  border:1px solid var(--rule-strong);
  padding:4px 10px;
}
.exp-links{ display:flex; gap:24px; }
.exp-links a{
  font-size:12px; color:var(--accent); letter-spacing:0.04em;
  border-bottom:1px solid transparent;
  transition:border-color 0.2s var(--ease);
}
.exp-links a:hover{ border-color:var(--accent); }

/* ==========================================================================
   ARCHIVE
   ========================================================================== */
.archive-list{ display:flex; flex-direction:column; }
.archive-row{
  display:grid;
  grid-template-columns:80px 1fr 100px;
  align-items:baseline;
  gap:24px;
  padding:20px 0;
  border-top:1px solid var(--rule);
  transition:background 0.25s var(--ease), padding-left 0.25s var(--ease);
}
.archive-list a:last-child{ border-bottom:1px solid var(--rule); }
.archive-row:hover{ padding-left:10px; background:var(--accent-wash); }
.archive-vol{ font-size:11px; color:var(--accent); letter-spacing:0.08em; }
.archive-title{ font-family:var(--serif); font-size:17px; color:var(--off-white); }
.archive-date{ font-size:11px; color:var(--warm-grey-dim); text-align:right; letter-spacing:0.06em; }

/* ==========================================================================
   CONTACT
   ========================================================================== */
.contact-lede{
  font-family:var(--serif); font-style:italic;
  font-size:clamp(20px,2.6vw,28px);
  color:var(--off-white-dim);
  max-width:640px;
  margin:0 0 56px;
}
.contact-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:1px;
  background:var(--rule);
  border:1px solid var(--rule);
}
.contact-item{
  background:var(--black);
  padding:28px 30px;
  display:flex; flex-direction:column; gap:8px;
  transition:background 0.25s var(--ease);
}
.contact-item:hover{ background:var(--panel); }
.contact-label{ font-size:10.5px; letter-spacing:0.14em; color:var(--warm-grey); }
.contact-value{ font-size:16px; color:var(--off-white); }
.contact-item:hover .contact-value{ color:var(--accent); }

/* ==========================================================================
   FOOTER
   ========================================================================== */
#footer{
  position:relative; z-index:2;
  border-top:1px solid var(--rule);
}
.footer-inner{
  max-width:1180px; margin:0 auto;
  padding:28px 32px;
  display:flex; justify-content:space-between; flex-wrap:wrap; gap:10px;
  font-size:10.5px; letter-spacing:0.08em;
  color:var(--warm-grey-dim);
}

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */
@media (max-width:860px){
  .notebook{ grid-template-columns:1fr; gap:48px; }
  .experiment{ grid-template-columns:1fr; gap:14px; }
  .hero-margin{ display:none; }
  .contact-grid{ grid-template-columns:1fr; }
}

@media (max-width:720px){
  .nav-links{ display:none; }
  #nav-toggle{ display:flex; }
  .section{ padding:120px 22px 90px; }
  .archive-row{ grid-template-columns:56px 1fr; }
  .archive-date{ display:none; }
}

@media (max-width:480px){
  .hero-name{ font-size:15vw; }
}