/* ============================================================
   Rana Zohreh — "Bench & Code" v3 (warm multi-accent, Mulish)
   Display + Body: Mulish (Calibri-like humanist sans)
   Labels: IBM Plex Mono
   Palette: bone + olive + amber + oxblood
   Edit :root to restyle everything.
   ============================================================ */

:root {
  /* ---- BASE ---- */
  --paper:  #f2e9d8;   /* warm cream-bone (back toward previous) */
  --paper2: #ede1c9;   /* photo frame */
  --ink:    #211c17;   /* warm near-black */
  --muted:  #7c6f5d;   /* warm grey */
  --line:   #ddcfb6;   /* warm hairline */

  /* ---- ACCENTS (the palette) ---- */
  --olive:   #6f8346;
  --amber:   #a85d2e;
  --oxblood: #7c3a33;
  --accent:  var(--olive);   /* primary: links + active nav */

  /* ---- TYPE ---- */
  --display: 'Zilla Slab', Georgia, serif;    /* ≈ Sentinel (free slab) */
  --body:    'Bitter', Georgia, serif;         /* ≈ Clarendon (free slab) */
  --mono:    'IBM Plex Mono', monospace;

  --maxw: 1080px;
}

* { box-sizing: border-box; }
html {
  scroll-behavior: smooth;
  overflow-x: clip;            /* kills the horizontal scrollbar + bottom shake; keeps sticky working */
  scrollbar-width: none;       /* Firefox: hide scrollbar */
  -ms-overflow-style: none;    /* legacy Edge */
}
html::-webkit-scrollbar { width: 0; height: 0; }  /* Chrome/Safari: hide scrollbar */

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--body);
  font-size: 18px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

/* ---- FILM GRAIN OVERLAY ---- */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 9999;
  pointer-events: none;
  opacity: 0.9;                 /* lower = subtler grain */
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.4'/%3E%3C/svg%3E");
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 2px; }

/* ============================================================
   HEADER / NAV
   ============================================================ */
.site-header {
  margin: 0;
  padding: 1.4rem clamp(1.5rem, 4vw, 3rem) 0.9rem;
  position: sticky; top: 0; z-index: 10001;
  background: var(--paper);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
}
.logo {
  display: inline-flex;
  align-items: center;
  line-height: 0;
  margin-right: auto;   /* pushes nav to the far right */
  color: var(--ink);
}
.logo svg { display: block; }
.logo:hover { text-decoration: none; color: var(--accent); }

.site-nav { display: flex; gap: 1.9rem; margin-left: auto; font-family: var(--mono); font-size: 0.8rem; }
.home .logo { display: none; }   /* hide the small name only on the homepage */
.site-nav a { color: var(--muted); }
.site-nav a:hover { color: var(--ink); text-decoration: none; }
.site-nav a.is-active { color: var(--ink); }
.site-nav a.is-active::after {
  content: ""; display: block; height: 2px; background: var(--accent); margin-top: 3px;
}

/* ============================================================
   MAIN
   ============================================================ */
main { max-width: var(--maxw); margin: 0 auto; padding: 0 1.5rem; }

.hero {
  padding: 3.5rem 0 1rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: start;
}
@media (min-width: 720px) {
  .hero { grid-template-columns: 260px 1fr; gap: 3rem; }
  .portrait { order: -1; }   /* portrait sits in the left column */
}

.eyebrow {
  font-family: var(--mono);
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--oxblood);
  margin: 0 0 1rem;
}

.hero h1 {
  font-family: var(--display);
  font-weight: 600;
  font-size: clamp(2.7rem, 7vw, 4.3rem);
  line-height: 1.02;
  letter-spacing: -0.01em;
  margin: 0 0 1.1rem;
}

/* ---- SIGNATURE: three dots (olive / amber / oxblood) ---- */
.dots { display: flex; gap: 9px; margin: 0 0 1.6rem; }
.dots span { width: 14px; height: 14px; border-radius: 50%; display: block; }
.dots span:nth-child(1) { background: var(--olive); }
.dots span:nth-child(2) { background: var(--amber); }
.dots span:nth-child(3) { background: var(--oxblood); }

.lede { font-size: 1.18rem; color: var(--ink); max-width: 40ch; margin: 0; }

/* ---- PORTRAIT ---- */
.portrait { margin: 0; position: relative; z-index: 10000; }  /* z-index keeps photo above the grain */
/* L-shaped brackets: bottom-left + top-right, offset 12px outside the photo */
.portrait::before,
.portrait::after { content: ""; position: absolute; width: 30px; height: 30px; }
.portrait::after  { left: -12px;  bottom: -12px; border-left: 2px solid var(--oxblood); border-bottom: 2px solid var(--oxblood); }
.portrait::before { right: -12px; top: -12px;    border-right: 2px solid var(--oxblood); border-top: 2px solid var(--oxblood); }
.portrait img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  display: block;
  background: var(--paper2);
  border: 1px solid var(--line);
  filter: grayscale(0.12) sepia(0.10) contrast(1.02);  /* delete for a plain photo */
}
/* corner brackets: bottom-left + top-right, offset out from the photo.
   change -10px to push them further/closer; change var(--oxblood) to recolor */
.portrait::after {
  content: ""; position: absolute; left: -10px; bottom: -10px;
  width: 30px; height: 30px;
  border-left: 2px solid var(--oxblood); border-bottom: 2px solid var(--oxblood);
}
.portrait::before {
  content: ""; position: absolute; right: -10px; top: -10px;
  width: 30px; height: 30px;
  border-right: 2px solid var(--oxblood); border-top: 2px solid var(--oxblood);
}
.portrait figcaption {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--muted);
  margin-top: 0.6rem;
  letter-spacing: 0.04em;
}

/* ---- PROSE ---- */
.prose { padding: 1.5rem 0; max-width: 62ch; }
.prose p { margin: 0 0 1.25rem; color: var(--ink); }

/* ---- FOCUS ---- */
.focus { padding: 1.5rem 0 0; border-top: 1px solid var(--line); margin-top: 1rem; }
.focus-label {
  font-family: var(--mono); font-size: 0.74rem; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--muted);
}
.focus-list {
  list-style: none; padding: 0; margin: 0.75rem 0 0;
  display: flex; flex-wrap: wrap; gap: 0.5rem 1.5rem;
  font-family: var(--mono); font-size: 0.84rem;
}
.focus-list li::before { content: "+ "; color: var(--amber); }

/* ---- inner / stub pages ---- */
.page-intro { padding: 3rem 0 1rem; }
.page-intro h1 {
  font-family: var(--display); font-weight: 600;
  font-size: clamp(2.3rem, 6vw, 3.2rem); letter-spacing: -0.01em; margin: 0 0 1rem;
}
.placeholder {
  font-family: var(--mono); font-size: 0.84rem; color: var(--muted);
  border: 1px dashed var(--line); padding: 1rem 1.25rem; border-radius: 4px;
}

/* ---- RESEARCH page ---- */
.page-lede { font-size: 1.12rem; color: var(--ink); max-width: 60ch; margin: 0 0 0.5rem; }
.research-list { display: flex; flex-direction: column; gap: 3.4rem; padding: 2.4rem 0 0; max-width: 66ch; }
.theme { border-top: 1px solid var(--line); padding-top: 2rem; }
.theme .tag {
  font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.05em;
  text-transform: uppercase; color: var(--paper); background: var(--oxblood);
  display: inline-block; padding: 3px 9px; border-radius: 3px; margin-bottom: 0.7rem;
}
.theme h2 {
  font-family: var(--display); font-weight: 600; font-size: 1.5rem;
  letter-spacing: -0.01em; line-height: 1.15; margin: 0 0 0.6rem;
}
.theme p { margin: 0 0 0.9rem; color: var(--ink); }
.theme .methods { font-family: var(--mono); font-size: 0.76rem; color: var(--muted); margin: 0; }
.theme .methods b { color: var(--ink); font-weight: 500; }

/* ---- PUBLICATIONS page ---- */
.pub-group { margin: 0 0 4.4rem; max-width: 72ch; }
.pub-label {
  font-family: var(--display); font-size: 1.25rem; font-weight: 600;
  letter-spacing: -0.01em; color: var(--oxblood); display: inline-block;
  margin-bottom: 1rem; padding-bottom: 3px; border-bottom: 2px solid var(--oxblood);
}
.pub { padding: 1.15rem 0; border-top: 1px solid var(--line); }
.pub .title { font-weight: 600; color: var(--ink); }
.pub .authors { display: block; color: var(--muted); font-size: 0.92rem; margin-top: 0.15rem; }
.pub .venue { display: block; color: var(--muted); font-size: 0.88rem; font-style: italic; margin-top: 0.1rem; }
.pub .me { color: var(--oxblood); font-weight: 600; }
.pub .award {
  font-family: var(--mono); font-size: 0.72rem; color: var(--olive);
  margin-top: 0.35rem; display: inline-block;
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  max-width: var(--maxw); margin: 4rem auto 0;
  padding: 1.5rem 1.5rem 3rem; border-top: 1px solid var(--line);
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 0.75rem;
}
.footer-links { display: flex; gap: 1.2rem; align-items: center; font-family: var(--mono); font-size: 0.8rem; }
.footer-links a { color: var(--muted); display: inline-flex; }
.footer-links a:hover { color: var(--oxblood); text-decoration: none; }
.footer-links svg { width: 20px; height: 20px; display: block; }
.footer-note { font-family: var(--mono); font-size: 0.8rem; color: var(--muted); margin: 0; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 540px) {
  body { font-size: 17px; }
  .site-header { padding-top: 1.75rem; }
  .hero { padding-top: 2.5rem; }
  .portrait { max-width: 240px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }


/* ============================================================
   THEME TOGGLE + DARK MODE
   ============================================================ */
.theme-toggle {
  background: none; border: none; cursor: pointer; color: var(--muted);
  padding: 2px; display: inline-flex; align-items: center;
}
.theme-toggle:hover { color: var(--ink); }
.theme-toggle svg { display: block; width: 18px; height: 18px; }
.theme-toggle .icon-sun { display: none; }
[data-theme="dark"] .theme-toggle .icon-moon { display: none; }
[data-theme="dark"] .theme-toggle .icon-sun { display: inline; }

[data-theme="dark"] {
  --paper:  #1a1714;
  --paper2: #232019;
  --ink:    #ece5d7;
  --muted:  #9c9384;
  --line:   #322d25;
  --olive:  #9fb06b;
  --amber:  #d68f55;
  --oxblood:#cf7468;
}
[data-theme="dark"] body::before { mix-blend-mode: screen; opacity: 0.32; }
[data-theme="dark"] .portrait img { filter: grayscale(0.1) contrast(1.0); }

/* ============================================================
   CV page
   ============================================================ */
.cv-download {
  display: inline-block; font-family: var(--mono); font-size: 0.8rem;
  border: 1px solid var(--ink); padding: 0.5rem 1rem; border-radius: 4px;
  color: var(--ink); margin: 0 0 1.75rem;
}
.cv-download:hover { background: var(--ink); color: var(--paper); text-decoration: none; }
.cv-section { margin: 0 0 2.2rem; max-width: 76ch; }
.cv-section > h2 {
  font-family: var(--display); font-weight: 600; font-size: 1.4rem;
  letter-spacing: -0.01em; margin: 0 0 0.75rem;
}
.cv-info { display: grid; grid-template-columns: max-content 1fr; gap: 0.4rem 1.4rem; max-width: 62ch; }
.cv-info dt {
  font-family: var(--mono); font-size: 0.74rem; text-transform: uppercase;
  letter-spacing: 0.04em; color: var(--muted); padding-top: 3px;
}
.cv-info dd { margin: 0; color: var(--ink); }
.cv-row {
  display: grid; grid-template-columns: 124px 1fr; gap: 1rem;
  padding: 0.9rem 0; border-top: 1px solid var(--line);
}
.cv-date { font-family: var(--mono); font-size: 0.78rem; color: var(--oxblood); padding-top: 2px; }
.cv-entry h3 { font-size: 1.02rem; font-weight: 600; margin: 0 0 0.15rem; }
.cv-entry .org { color: var(--muted); font-size: 0.92rem; margin: 0 0 0.45rem; }
.cv-entry ul { margin: 0.3rem 0 0; padding-left: 1.1rem; }
.cv-entry li { margin: 0 0 0.35rem; color: var(--ink); }
.skills-group { margin: 0 0 0.85rem; }
.skills-group h3 { font-size: 0.95rem; font-weight: 600; margin: 0 0 0.2rem; }
.skills-group p { margin: 0; color: var(--muted); font-size: 0.9rem; }
@media (max-width: 560px) { .cv-row { grid-template-columns: 1fr; gap: 0.2rem; } }

/* ============================================================
   PROJECTS page
   ============================================================ */
.projects-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem; padding: 1.75rem 0 0;
}
.project-card {
  border: 1px solid var(--line); border-radius: 6px; padding: 1.25rem;
  display: flex; flex-direction: column; gap: 0.6rem; background: var(--paper2);
}
.project-card .tag {
  font-family: var(--mono); font-size: 0.7rem; text-transform: uppercase;
  letter-spacing: 0.05em; color: var(--oxblood);
}
.project-card h2 {
  font-family: var(--display); font-weight: 600; font-size: 1.2rem;
  letter-spacing: -0.01em; margin: 0;
}
.project-card p { margin: 0; font-size: 0.92rem; color: var(--ink); flex: 1; }
.project-stack { font-family: var(--mono); font-size: 0.74rem; color: var(--muted); }
.project-card .links { font-family: var(--mono); font-size: 0.78rem; }


/* ---- scroll progress bar ---- */
#scroll-progress {
  position: absolute; left: 0; bottom: 0; height: 3px; width: 0;
  background: var(--amber); z-index: 2; transition: background .15s ease;
}


/* ---- CONTACT page ---- */
.contact-list { display: flex; flex-direction: column; gap: 0; padding: 1.75rem 0 0; max-width: 58ch; }
.contact-row {
  display: flex; align-items: center; gap: 1rem; padding: 1rem 0;
  border-top: 1px solid var(--line); color: var(--ink);
}
.contact-row:hover { text-decoration: none; }
.contact-row svg { width: 22px; height: 22px; flex: none; color: var(--muted); }
.contact-row:hover svg,
.contact-row:hover .c-label { color: var(--oxblood); }
.c-label { font-weight: 600; min-width: 96px; }
.c-val { color: var(--muted); font-family: var(--mono); font-size: 0.86rem; }
.contact-note { font-family: var(--mono); font-size: 0.82rem; color: var(--muted); margin-top: 1.5rem; }