/* ============================================================
   Aluna Rizzoli — rizzoli.me
   Bold & computational. Hand-built static site.
   ============================================================ */

:root{
  --bg:        #f7f6f2;   /* warm paper           */
  --bg-2:      #efece3;   /* alt section surface  */
  --ink:       #16130f;   /* near-black           */
  --ink-2:     #57514a;   /* muted body           */
  --ink-3:     #6b645a;   /* faint / meta (AA on both surfaces) */
  --line:      #e2ded3;   /* hairline             */
  --line-2:    #d2ccbd;   /* stronger hairline    */
  --accent:    #e5411f;   /* sharp vermilion      */
  --accent-2:  #c1300f;   /* accent for small text (contrast) */
  --accent-bg: #fbe7e0;   /* accent tint surface  */
  --dark:      #16130f;   /* inverted sections    */
  --dark-2:    #221d18;
  --dark-line: #38322b;

  --mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  --sans: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

  --wrap: 1120px;
  --gutter: clamp(1.25rem, 5vw, 4rem);
  --radius: 0px;            /* bold = square corners */
}

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

html{ scroll-behavior:smooth; scroll-padding-top:84px; -webkit-text-size-adjust:100%; }

body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--sans);
  font-size:clamp(1rem, 0.97rem + 0.2vw, 1.075rem);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

img{ max-width:100%; display:block; }
a{ color:inherit; }
h1,h2,h3{ margin:0; font-weight:600; letter-spacing:-0.02em; line-height:1.05; }
strong{ font-weight:600; color:var(--ink); }
em{ font-style:italic; }

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

.skip{
  position:absolute; left:-999px; top:0; z-index:200;
  background:var(--ink); color:var(--bg); padding:.6rem 1rem;
  font-family:var(--mono); font-size:.8rem;
}
.skip:focus{ left:.5rem; top:.5rem; }

/* top accent bar */
.topbar{ height:4px; background:var(--accent); }

/* ----------------------------------------------------------- NAV */
.nav{
  position:sticky; top:0; z-index:100;
  background:color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter:saturate(140%) blur(8px);
  border-bottom:1px solid var(--line);
}
.nav__inner{
  max-width:var(--wrap); margin:0 auto;
  padding:.85rem var(--gutter);
  display:flex; align-items:center; justify-content:space-between; gap:1rem;
}
.nav__brand{
  display:flex; align-items:center; gap:.6rem;
  text-decoration:none; font-family:var(--mono); font-weight:600;
  letter-spacing:.02em;
}
.nav__mark{
  display:inline-grid; place-items:center;
  width:30px; height:30px; background:var(--ink); color:var(--bg);
  font-size:.78rem; letter-spacing:.04em;
}
.nav__dot{ font-size:.85rem; color:var(--ink); }
.nav__links{
  display:flex; flex-wrap:wrap; gap:.15rem 1.1rem;
  font-family:var(--mono); font-size:.8rem; letter-spacing:.01em;
}
.nav__links a{
  text-decoration:none; color:var(--ink-2);
  padding:.45rem 0; position:relative; transition:color .18s;
}
.nav__links a::after{
  content:""; position:absolute; left:0; bottom:-2px; height:2px; width:0;
  background:var(--accent); transition:width .2s ease;
}
.nav__links a:hover{ color:var(--ink); }
.nav__links a.is-active{ color:var(--ink); }
.nav__links a.is-active::after,
.nav__links a:hover::after{ width:100%; }

/* ----------------------------------------------------------- LAYOUT */
.section{
  max-width:var(--wrap); margin:0 auto;
  padding:clamp(3.5rem,8vw,7rem) var(--gutter);
  border-top:1px solid var(--line);
}
.section--alt{
  max-width:none; background:var(--bg-2);
  border-top:1px solid var(--line-2);
}
.section--alt > *{ max-width:var(--wrap); margin-inline:auto; }

.section__index{
  font-family:var(--mono); font-size:.78rem; letter-spacing:.12em;
  text-transform:uppercase; color:var(--accent-2); margin:0 0 1.4rem;
}
.section__head{ margin-bottom:2.6rem; max-width:30ch; }
.section__head h2{ font-size:clamp(1.55rem,3.2vw,2.3rem); }
.section__head--row{
  display:flex; align-items:baseline; justify-content:space-between;
  gap:1rem 2rem; flex-wrap:wrap; max-width:none;
}
.section__sub{
  font-family:var(--mono); font-size:.8rem; color:var(--ink-3);
  letter-spacing:.04em; margin:0; white-space:nowrap;
}

/* ----------------------------------------------------------- HERO */
.hero{
  max-width:var(--wrap); margin:0 auto;
  padding:clamp(3rem,7vw,6rem) var(--gutter) clamp(3.5rem,7vw,6rem);
  position:relative;
}
.hero::before{
  content:""; position:absolute; inset:0; z-index:0; pointer-events:none;
  background-image:radial-gradient(var(--line-2) 1.1px, transparent 1.1px);
  background-size:26px 26px;
  -webkit-mask-image:linear-gradient(180deg,#000 0%,transparent 78%);
  mask-image:linear-gradient(180deg,#000 0%,transparent 78%);
  opacity:.55;
}
.hero__grid{
  position:relative; z-index:1;
  display:grid; grid-template-columns:1.45fr .9fr; gap:clamp(2rem,5vw,4rem);
  align-items:center;
}
.eyebrow{
  display:flex; align-items:center; gap:.6rem;
  font-family:var(--mono); font-size:.82rem; letter-spacing:.06em;
  text-transform:uppercase; color:var(--ink-2); margin:0 0 1.4rem;
}
.eyebrow__sq{ width:9px; height:9px; background:var(--accent); display:inline-block; }
.hero__name{
  font-family:var(--mono); font-weight:700;
  font-size:clamp(3rem,9vw,6rem); line-height:.92; letter-spacing:-0.04em;
  margin:0 0 1.6rem;
}
.caret{
  display:inline-block; width:.5ch; height:.86em; margin-left:.12em;
  background:var(--accent); transform:translateY(.08em);
  animation:blink 1.1s steps(1) infinite;
}
@keyframes blink{ 50%{ opacity:0; } }
.hero__lede{
  font-size:clamp(1.1rem,1.6vw,1.4rem); line-height:1.55;
  color:var(--ink); max-width:34ch; margin:0 0 2rem; font-weight:400;
}
.hero__lede em{ font-style:italic; color:var(--accent-2); }
.hero__meta{
  list-style:none; margin:0 0 2.2rem; padding:0;
  font-family:var(--mono); font-size:.82rem; color:var(--ink-2);
  display:grid; gap:.55rem; border-top:1px solid var(--line);
  padding-top:1.3rem;
}
.hero__meta li{ display:flex; gap:1rem; }
.hero__meta span{
  color:var(--ink-3); text-transform:uppercase; letter-spacing:.1em;
  font-size:.72rem; min-width:3.5rem; padding-top:.12rem;
}

.hero__links{ display:flex; flex-wrap:wrap; gap:.7rem; }
.btn{
  display:inline-flex; align-items:center; gap:.45rem;
  font-family:var(--mono); font-size:.82rem; letter-spacing:.02em;
  text-decoration:none; color:var(--ink);
  padding:.62rem 1rem; border:1.5px solid var(--ink);
  background:transparent; transition:background .16s,color .16s,transform .12s;
}
.btn:hover{ background:var(--ink); color:var(--bg); transform:translateY(-1px); }
.btn--solid{ background:var(--accent-2); border-color:var(--accent-2); color:#fff; }
.btn--solid:hover{ background:#9c2709; border-color:#9c2709; color:#fff; }
.ext{ font-size:.9em; opacity:.85; }

/* portrait */
.hero__media{ display:flex; justify-content:center; }
.portrait{
  position:relative; margin:0; width:min(100%,360px); aspect-ratio:1;
}
.portrait::before{
  content:""; position:absolute; right:-16px; bottom:-16px;
  width:100%; height:100%; background:var(--accent); z-index:0;
}
.portrait img{
  position:relative; z-index:1; width:100%; height:100%; object-fit:cover;
  border:1.5px solid var(--ink); filter:grayscale(8%) contrast(1.02);
}
.portrait__brk{ position:absolute; z-index:2; width:18px; height:18px; }
.portrait__brk--tl{ left:-7px; top:-7px; border-left:2px solid var(--ink); border-top:2px solid var(--ink); }
.portrait__brk--br{ right:-23px; bottom:-23px; border-right:2px solid var(--accent); border-bottom:2px solid var(--accent); }

/* ----------------------------------------------------------- ABOUT */
.about__grid{
  display:grid; grid-template-columns:1.6fr 1fr; gap:clamp(2rem,5vw,4rem);
  align-items:start;
}
.about__bio p{ margin:0 0 1.2rem; color:var(--ink-2); font-size:1.12rem; }
.about__bio p:last-child{ margin-bottom:0; }
.facts__label{
  font-family:var(--mono); font-size:.76rem; font-weight:500; letter-spacing:.06em;
  color:var(--ink-3); margin:0 0 1rem;
}
.facts{ margin:0; display:grid; gap:0; border-top:1px solid var(--line); }
.facts div{
  display:flex; justify-content:space-between; gap:1rem;
  padding:.7rem 0; border-bottom:1px solid var(--line);
  font-family:var(--mono); font-size:.85rem;
}
.facts dt{ color:var(--ink-3); text-transform:uppercase; letter-spacing:.06em; font-size:.74rem; padding-top:.15rem; }
.facts dd{ margin:0; color:var(--ink); text-align:right; }

/* timeline */
.timeline{ margin-top:clamp(2.5rem,5vw,4rem); }
.tl{ list-style:none; margin:0; padding:0; border-top:1px solid var(--line); }
.tl li{
  display:grid; grid-template-columns:7rem 1fr; gap:.3rem 1.5rem;
  padding:1.1rem 0; border-bottom:1px solid var(--line);
  align-items:baseline;
}
.tl__yr{ font-family:var(--mono); font-size:.85rem; color:var(--accent-2); letter-spacing:.02em; }
.tl__role{ font-weight:600; color:var(--ink); }
.tl__org{ grid-column:2; color:var(--ink-2); font-size:.95rem; }
.tl__note{
  margin:1.4rem 0 0; color:var(--ink-3); font-size:.92rem; max-width:62ch;
}

/* ----------------------------------------------------------- RESEARCH */
.research__grid{
  display:grid; grid-template-columns:1.5fr 1fr; gap:clamp(2rem,5vw,4.5rem);
  align-items:center;
}
.research__text h2{ font-size:clamp(1.55rem,3.2vw,2.3rem); margin-bottom:1.4rem; max-width:18ch; }
.research__text p{ margin:0 0 1.2rem; color:var(--ink-2); }
.tags{ list-style:none; display:flex; flex-wrap:wrap; gap:.5rem; padding:0; margin:1.6rem 0 0; }
.tags li{
  font-family:var(--mono); font-size:.76rem; letter-spacing:.02em;
  padding:.35rem .7rem; border:1px solid var(--line-2); color:var(--ink-2);
  background:var(--bg);
}
.research__art{ display:flex; flex-direction:column; align-items:center; gap:1rem; }
.dynkin{ width:min(100%,240px); height:auto; overflow:visible; }
.dynkin__edges line{ stroke:var(--ink); stroke-width:3; stroke-linecap:round; }
.dynkin__nodes circle{ fill:var(--accent); }
.research__cap{
  font-family:var(--mono); font-size:.74rem; color:var(--ink-3);
  text-align:center; margin:0; max-width:26ch; letter-spacing:.02em;
}

/* ----------------------------------------------------------- PUBLICATIONS */
.pubs{ list-style:none; margin:0; padding:0; border-top:1px solid var(--line-2); counter-reset:none; }
.pub{
  display:grid; grid-template-columns:6.5rem 1fr; gap:1rem 1.8rem;
  padding:1.6rem 1rem 1.6rem 0; border-bottom:1px solid var(--line);
  margin-left:-1rem; padding-left:1rem;
  transition:background .16s, border-color .16s, box-shadow .16s;
}
.pub:hover{ background:var(--bg-2); box-shadow:inset 3px 0 0 var(--accent); }
.section--alt .pub:hover{ background:var(--bg); }
.pub__year{
  font-family:var(--mono); font-weight:600; font-size:1.05rem; color:var(--ink);
  display:flex; flex-direction:column; line-height:1.2; padding-top:.15rem;
}
.pub__year small{
  font-size:.66rem; font-weight:500; letter-spacing:.1em; text-transform:uppercase;
  color:var(--accent-2); margin-top:.25rem;
}
.pub__year--draft{
  font-size:.82rem; color:var(--accent-2); text-transform:uppercase; letter-spacing:.12em;
}
.pub__title{ font-size:1.18rem; font-weight:600; line-height:1.25; margin:0 0 .5rem; letter-spacing:-0.01em; }
.pub__authors{ margin:0 0 .25rem; color:var(--ink-2); font-size:.95rem; }
.pub__venue{ margin:0 0 .7rem; color:var(--ink-3); font-family:var(--mono); font-size:.82rem; }
.pub__links{ margin:0; display:flex; flex-wrap:wrap; gap:.5rem; }
.pub__links a{
  font-family:var(--mono); font-size:.76rem; text-decoration:none;
  color:var(--ink); padding:.45rem .7rem; border:1px solid var(--line-2);
  background:var(--bg); transition:background .15s,color .15s,border-color .15s;
}
.section--alt .pub__links a{ background:var(--bg-2); }
.pub__links a:hover{ background:var(--accent); border-color:var(--accent); color:#fff; }

/* ----------------------------------------------------------- PROJECTS */
.cards{ display:grid; grid-template-columns:repeat(3,1fr); gap:clamp(1rem,2.5vw,1.5rem); }
.card{
  display:flex; flex-direction:column; text-decoration:none; color:inherit;
  background:var(--bg); border:1.5px solid var(--ink);
  padding:1.6rem 1.5rem; min-height:100%;
  transition:transform .16s, box-shadow .16s, border-color .16s;
}
.card:hover{ transform:translate(-3px,-3px); box-shadow:6px 6px 0 var(--accent); }
.card__idx{ font-family:var(--mono); font-size:.78rem; color:var(--accent-2); letter-spacing:.08em; margin:0 0 1.1rem; }
.card__title{ font-size:1.22rem; line-height:1.2; margin:0 0 .8rem; }
.card__desc{ color:var(--ink-2); font-size:.95rem; margin:0 0 1.2rem; flex:1; }
.card__tags{ list-style:none; display:flex; flex-wrap:wrap; gap:.4rem; padding:0; margin:0 0 1.2rem; }
.card__tags li{
  font-family:var(--mono); font-size:.7rem; letter-spacing:.03em;
  color:var(--accent-2); background:var(--accent-bg); padding:.25rem .55rem;
}
.card__cta{
  font-family:var(--mono); font-size:.8rem; color:var(--ink);
  display:inline-flex; align-items:center; gap:.4rem; margin-top:auto;
  border-top:1px solid var(--line); padding-top:.9rem;
}
.card:hover .card__cta{ color:var(--accent-2); }

/* ----------------------------------------------------------- BEYOND */
.beyond__grid{
  display:grid; grid-template-columns:1fr 1.1fr; gap:clamp(2rem,5vw,4rem);
  align-items:center;
}
.beyond__text h2{ font-size:clamp(1.5rem,3vw,2.1rem); margin-bottom:1.2rem; }
.beyond__text p{ margin:0; color:var(--ink-2); }
.beyond__gallery{ display:grid; grid-template-columns:repeat(3,1fr); gap:.7rem; }
.beyond__gallery figure{ margin:0; aspect-ratio:1; overflow:hidden; border:1px solid var(--line-2); }
.beyond__gallery img{
  width:100%; height:100%; object-fit:cover;
  filter:grayscale(100%) contrast(1.05); transition:filter .3s, transform .4s;
}
.beyond__gallery figure:hover img{ filter:grayscale(0%); transform:scale(1.04); }

/* ----------------------------------------------------------- CONTACT */
.contact{
  background:var(--dark); color:var(--bg);
  padding:clamp(4rem,9vw,8rem) var(--gutter);
}
.contact__inner{ max-width:var(--wrap); margin:0 auto; }
.section__index--inv{ color:var(--accent); }
.contact__head{
  font-family:var(--mono); font-weight:700;
  font-size:clamp(2rem,6vw,4rem); letter-spacing:-0.03em; margin:0 0 1.5rem;
  color:var(--bg);
}
.contact__mail{
  display:inline-block; font-family:var(--mono);
  font-size:clamp(1.1rem,3vw,1.8rem); color:var(--accent);
  text-decoration:none; border-bottom:2px solid transparent;
  transition:border-color .2s; margin:0 0 1.5rem; overflow-wrap:anywhere;
}
.contact__mail:hover{ border-color:var(--accent); }
.contact__addr{
  font-style:normal; font-family:var(--mono);
  font-size:clamp(1.05rem,2.6vw,1.6rem); line-height:1.55;
  color:var(--bg); margin:0;
}
.contact__addr strong{ color:var(--accent); font-weight:600; }
.contact__links{ display:flex; flex-wrap:wrap; gap:1.6rem; margin-top:2.4rem; }
.contact__links a{
  font-family:var(--mono); font-size:.85rem; color:var(--bg);
  text-decoration:none; opacity:.78; display:inline-flex; gap:.35rem;
  border-bottom:1px solid transparent; padding-bottom:2px; transition:opacity .18s,border-color .18s;
}
.contact__links a:hover{ opacity:1; border-color:var(--accent); }

/* ----------------------------------------------------------- FOOTER */
.foot{
  background:var(--dark-2); color:var(--ink-3);
  border-top:1px solid var(--dark-line);
  padding:1.6rem var(--gutter);
  display:flex; justify-content:space-between; flex-wrap:wrap; gap:.5rem;
  font-family:var(--mono); font-size:.78rem;
}
.foot p{ margin:0; }

/* ----------------------------------------------------------- FOCUS */
a:focus-visible,
.btn:focus-visible,
.card:focus-visible,
.nav__brand:focus-visible,
.pub__links a:focus-visible{
  outline:2px solid var(--accent); outline-offset:3px; border-radius:1px;
}
.contact a:focus-visible{ outline-color:var(--bg); }
main:focus{ outline:none; }

/* ----------------------------------------------------------- REVEAL */
.reveal{ opacity:0; transform:translateY(16px); transition:opacity .6s ease, transform .6s ease; }
.reveal.in{ opacity:1; transform:none; }

/* ----------------------------------------------------------- RESPONSIVE */
@media (max-width:860px){
  .hero__grid{ grid-template-columns:1fr; gap:2.5rem; }
  .hero__media{ order:-1; justify-content:flex-start; }
  .portrait{ width:min(74%,300px); }
  .about__grid,.research__grid,.beyond__grid{ grid-template-columns:1fr; }
  .research__art{ order:-1; align-items:flex-start; }
  .beyond__gallery{ max-width:420px; }
  .cards{ grid-template-columns:1fr; }
}
@media (max-width:560px){
  html{ scroll-padding-top:132px; }  /* nav wraps to 2 rows on phones */
  .nav__dot{ display:none; }
  .pub{ grid-template-columns:1fr; gap:.4rem; }
  .pub__year{ flex-direction:row; gap:.6rem; align-items:baseline; }
  .tl li{ grid-template-columns:1fr; gap:.15rem; }
  .tl__org{ grid-column:1; }
  .hero__meta li{ flex-direction:column; gap:.1rem; }
}

/* ----------------------------------------------------------- MOTION */
@media (prefers-reduced-motion:reduce){
  html{ scroll-behavior:auto; }
  .caret{ animation:none; }
  .reveal{ opacity:1; transform:none; transition:none; }
  *{ transition:none !important; }
}