/* ============================================================
   Matteo Bonapersona, Portfolio
   Design system: "The Spec Sheet", a game design document
   ============================================================ */

@font-face{
  font-family:'Zilla Slab';
  src:url('assets/fonts/ZillaSlab-Bold.woff2') format('woff2');
  font-weight:700;font-style:normal;font-display:swap;
}
@font-face{
  font-family:'JetBrains Mono';
  src:url('assets/fonts/JetBrainsMono-Regular.woff2') format('woff2');
  font-weight:400;font-style:normal;font-display:swap;
}
@font-face{
  font-family:'Outfit';
  src:url('assets/fonts/Outfit-Var.woff2') format('woff2');
  font-weight:400 600;font-style:normal;font-display:swap;
}

:root{
  --paper:#DEDACB;
  --paper-raised:#E7E3D3;
  --paper-deep:#CFC9B4;
  --paper-plain:#E9E6DA;
  --ink:#201D16;
  --ink-soft:#5B5645;
  --ink-faint:#8A8471;
  --redline:#A32B1C;
  --redline-soft:rgba(163,43,28,.08);
  --stamp:#1E5C4A;
  --stamp-soft:rgba(30,92,74,.08);
  --border:rgba(32,29,22,.32);
  --border-soft:rgba(32,29,22,.16);
  --shadow:0 1px 2px rgba(32,29,22,.08),0 6px 18px rgba(32,29,22,.08);

  --font-slab:'Zilla Slab',Georgia,'Times New Roman',serif;
  --font-mono:'JetBrains Mono',ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --font-sans:'Outfit',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;

  --max:1260px;
  --pad:clamp(20px,4vw,40px);
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important;}
}

body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:17.5px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}

/* paper fiber grain over everything, very faint */
body::after{
  content:'';position:fixed;inset:0;z-index:90;pointer-events:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)' opacity='0.5'/%3E%3C/svg%3E");
  opacity:.05;
}

img{max-width:100%;display:block;}
a{color:inherit;}

h1,h2,h3{font-family:var(--font-slab);font-weight:700;line-height:1.1;margin:0;text-wrap:balance;}
strong,b{font-weight:600;}

/* ---------- ruled paper texture (used sparingly) ---------- */
.ruled{
  background-image:
    linear-gradient(rgba(32,29,22,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(32,29,22,.05) 1px,transparent 1px);
  background-size:26px 26px;
}

/* ---------- skip link ---------- */
.skip-link{
  position:absolute;left:-999px;top:0;background:var(--ink);color:var(--paper);
  padding:10px 16px;font-family:var(--font-mono);font-size:13px;z-index:200;
}
.skip-link:focus{left:12px;top:12px;}

/* ============================================================
   SITE HEADER / NAV (index tabs)
   ============================================================ */
.site-shell{position:relative;}

.tab-nav{
  position:fixed;left:0;top:110px;z-index:30;
  display:flex;flex-direction:column;gap:12px;
}
.tab-nav a{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.09em;text-transform:uppercase;
  text-decoration:none;color:var(--ink);
  writing-mode:vertical-rl;text-orientation:mixed;
  padding:14px 8px;background:var(--paper-deep);
  border:1px solid var(--border);border-left:none;
  transition:background-color .18s ease,color .18s ease;
}
.tab-nav a:hover,.tab-nav a:focus-visible{background:var(--ink);color:var(--paper);outline:none;}
.tab-nav a.current{background:var(--redline);color:var(--paper-raised);border-color:var(--redline);}

@media (max-width:860px){
  .tab-nav{
    position:sticky;top:0;left:auto;
    flex-direction:row;gap:0;
    overflow-x:auto;-webkit-overflow-scrolling:touch;
    background:var(--paper-deep);
    border-bottom:1px solid var(--border);
    scrollbar-width:none;
    margin:0;
  }
  .tab-nav::-webkit-scrollbar{display:none;}
  .tab-nav a{
    writing-mode:horizontal-tb;
    border:none;border-right:1px solid var(--border);
    padding:14px 16px;white-space:nowrap;flex:0 0 auto;
  }
}

/* ============================================================
   HOMEPAGE HERO / TITLE BLOCK
   ============================================================ */
.hero{
  padding:56px var(--pad) 40px;
  padding-left:calc(56px + var(--pad));
  max-width:calc(var(--max) + 56px);
  position:relative;
}
/* red notebook margin line */
.hero::before{
  content:'';position:absolute;top:24px;bottom:8px;
  left:calc(40px + var(--pad));
  width:2px;background:var(--redline);opacity:.35;
}
@media (max-width:860px){
  .hero{padding-left:var(--pad);padding-top:28px;}
  .hero::before{left:calc(var(--pad) - 14px);}
}

.doc-id{
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--ink-soft);margin:0 0 14px;
}
.hero h1{
  font-size:clamp(28px,4.4vw,44px);
  border-bottom:3px double var(--ink);
  padding-bottom:18px;
}
.field-row{
  display:flex;flex-wrap:wrap;gap:10px 28px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.05em;text-transform:uppercase;
  color:var(--ink-soft);margin-top:16px;
}
.field-row b{color:var(--ink);font-weight:700;}
.field-row a{text-transform:none;color:var(--redline);text-decoration:none;border-bottom:1px solid transparent;transition:border-color .18s ease;}
.field-row a:hover,.field-row a:focus-visible{border-bottom-color:var(--redline);outline:none;}

/* ============================================================
   SECTIONS + PROJECT GRID (homepage)
   ============================================================ */
.section{
  padding:36px var(--pad) 8px;
  padding-left:calc(36px + var(--pad));
  max-width:calc(var(--max) + 56px);
}
@media (max-width:860px){.section{padding-left:var(--pad);}}

.section-head{display:flex;align-items:baseline;gap:14px;margin-bottom:28px;}
.section-num{
  font-family:var(--font-mono);font-size:11px;color:var(--ink);letter-spacing:.06em;
  background:var(--paper-deep);border:1px solid var(--border);
  padding:4px 9px;transform:rotate(-1deg);flex:none;
}
.section-head h2{font-size:clamp(20px,2.6vw,26px);}
.section-rule{flex:1;height:1px;background:var(--border-soft);}

.grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(20px,3vw,30px);
  padding-bottom:44px;
}
@media (max-width:980px){.grid{grid-template-columns:repeat(2,1fr);}}
@media (max-width:520px){.grid{grid-template-columns:1fr;}}

.card{
  background:var(--paper-raised);border:1px solid var(--border);
  padding:12px 12px 20px;position:relative;text-decoration:none;color:var(--ink);
  transition:transform .22s ease,box-shadow .22s ease;
  display:block;
  /* stacked-paper edge */
  box-shadow:
    2px 2px 0 rgba(32,29,22,.06),
    4px 4px 0 rgba(32,29,22,.04);
}
.card:nth-child(4n+1){transform:rotate(-.5deg);}
.card:nth-child(4n+2){transform:rotate(.4deg);}
.card:nth-child(4n+3){transform:rotate(-.3deg);}
.card:nth-child(4n+4){transform:rotate(.5deg);}
.card:hover,.card:focus-visible{
  transform:rotate(0deg) translateY(-6px) scale(1.035);
  box-shadow:0 2px 4px rgba(32,29,22,.10),0 14px 34px rgba(32,29,22,.16);
  outline:none;
  z-index:5;
}

.card-tape{
  position:absolute;top:-9px;left:50%;transform:translateX(-50%) rotate(-2deg);
  width:60px;height:18px;background:rgba(205,195,155,.75);border:1px solid var(--border-soft);
  box-shadow:0 1px 2px rgba(32,29,22,.08);
  pointer-events:none;z-index:3;
}
.card figure{margin:0;border:1px solid var(--border);overflow:hidden;}
.card img{width:100%;aspect-ratio:16/9;object-fit:cover;}

/* placeholder tile for projects awaiting a thumbnail */
.card figure.ph{
  aspect-ratio:16/9;display:flex;align-items:center;justify-content:center;
  background-color:var(--paper-deep);
  background-image:repeating-linear-gradient(45deg,transparent 0,transparent 11px,rgba(32,29,22,.045) 11px,rgba(32,29,22,.045) 22px);
}
.card figure.ph span{
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;
  color:var(--ink-faint);background:var(--paper-raised);padding:5px 10px;border:1px solid var(--border-soft);
}

.stamp{
  position:absolute;top:16px;right:-8px;z-index:4;
  font-family:var(--font-mono);font-size:11.5px;font-weight:700;
  letter-spacing:.1em;text-transform:uppercase;padding:5px 10px;
  border:2px solid var(--redline);color:var(--redline);
  background:var(--paper-raised);
  box-shadow:0 1px 3px rgba(32,29,22,.18);
  transform:rotate(6deg);
  pointer-events:none;
}
.stamp.wip{border-color:var(--stamp);color:var(--stamp);}

.card h3{font-size:19px;margin:13px 0 4px;}
.card .tags{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.04em;text-transform:uppercase;color:var(--ink-soft);}

/* ============================================================
   CV SECTION
   ============================================================ */
.cv-block{max-width:640px;padding-bottom:60px;}
.btn{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:12.5px;letter-spacing:.06em;text-transform:uppercase;
  text-decoration:none;color:var(--ink);background:var(--paper-raised);
  border:1px solid var(--ink);padding:11px 20px;
  transition:background-color .18s ease,color .18s ease;
}
.btn:hover,.btn:focus-visible{background:var(--ink);color:var(--paper);outline:none;}
.btn.stamped{border-color:var(--redline);color:var(--redline);}
.btn.stamped:hover{background:var(--redline);color:var(--paper-raised);}


/* ============================================================
   FOOTER
   ============================================================ */
.site-footer{
  border-top:1px solid var(--border);margin-top:20px;
  padding:22px var(--pad);text-align:center;
}
.site-footer a{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;text-transform:uppercase;
  text-decoration:none;color:var(--ink-soft);
}
.site-footer a:hover{color:var(--redline);}

/* ============================================================
   PROJECT PAGES, compact header, theme recedes into content
   ============================================================ */
.project-header{
  padding:20px var(--pad);
  padding-left:calc(30px + var(--pad));
}
@media (max-width:860px){.project-header{padding-left:var(--pad);}}

.back-link{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;text-transform:uppercase;
  text-decoration:none;color:var(--ink);
  background:var(--paper-raised);border:1px solid var(--ink);
  padding:9px 16px;
  box-shadow:2px 2px 0 rgba(32,29,22,.10);
  transition:background-color .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.back-link:hover,.back-link:focus-visible{
  background:var(--ink);color:var(--paper);outline:none;
  transform:translate(-1px,-1px);box-shadow:3px 3px 0 rgba(32,29,22,.14);
}
.back-link:active{transform:translate(1px,1px);box-shadow:1px 1px 0 rgba(32,29,22,.10);}

/* page title, set to read like the section titles below it */
.project-title{
  font-size:clamp(28px,4vw,40px);
  margin:0 0 34px;
  padding-bottom:16px;
  border-bottom:1px solid var(--border-soft);
}

/* content canvas: spec card sits on the gridded background,
   only the article floats as a raised paper sheet */
.project-body{
  padding:8px var(--pad) 40px;
}
.project-content{
  max-width:1180px;margin:0 auto;padding:36px 0 10px;
}

/* two-column layout: sticky spec card + article */
.project-layout{
  display:grid;grid-template-columns:264px minmax(0,1fr);
  gap:clamp(28px,4.5vw,64px);align-items:start;
}
.project-article{
  counter-reset:blk;position:relative;
  padding:40px clamp(24px,3.5vw,52px) 48px;
  background:var(--paper-plain);
  box-shadow:0 1px 2px rgba(32,29,22,.08),0 22px 46px rgba(32,29,22,.16);
}

/* --- spec card (sticky sidebar) --- */
.spec-card{
  position:sticky;top:28px;
  background:var(--paper-raised);border:1px solid var(--border);
  padding:22px 20px 20px;
  transform:rotate(-.6deg);
  box-shadow:2px 2px 0 rgba(32,29,22,.06),4px 4px 0 rgba(32,29,22,.04);
}
.spec-card::before{
  content:'';position:absolute;top:-9px;left:50%;transform:translateX(-50%) rotate(2deg);
  width:64px;height:18px;background:rgba(205,195,155,.75);
  border:1px solid var(--border-soft);box-shadow:0 1px 2px rgba(32,29,22,.08);
}
.spec-title{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--redline);margin:0 0 14px;padding-bottom:10px;
  border-bottom:2px double var(--border);
}
.spec-card dl{margin:0;display:grid;grid-template-columns:auto 1fr;gap:7px 14px;font-size:.82em;}
.spec-card dt{
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.08em;text-transform:uppercase;
  color:var(--ink-faint);padding-top:2px;
}
.spec-card dd{margin:0;font-weight:600;}
.spec-card .btn{display:flex;justify-content:center;margin-top:18px;font-size:11.5px;padding:10px 12px;text-align:center;}

@media (max-width:900px){
  .project-layout{grid-template-columns:1fr;}
  .spec-card{position:static;transform:rotate(0deg);max-width:480px;}
}

.media-block{margin-bottom:64px;}
.media-block h3{
  font-size:clamp(20px,2.6vw,25px);margin-bottom:16px;
  display:flex;align-items:baseline;gap:12px;
  padding-bottom:10px;border-bottom:1px solid var(--border-soft);
}
.media-block h3::before{
  counter-increment:blk;content:counter(blk,decimal-leading-zero);
  font-family:var(--font-mono);font-size:12px;font-weight:400;
  color:var(--redline);letter-spacing:.06em;flex:none;
}
.media-block p{margin:0 0 14px;max-width:68ch;}
.media-block p:last-child{margin-bottom:0;}
.media-block ul{margin:0 0 14px;padding-left:1.2em;}
.media-block ul ul{margin-top:8px;}
.media-block li{margin-bottom:6px;}
.media-block strong{color:var(--ink);}
.soon-note{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.04em;
  color:var(--ink-faint);border-left:2px solid var(--redline);padding-left:12px;
}

.figure{
  border:1px solid var(--border-soft);background:var(--paper-raised);
  overflow:hidden;margin-bottom:16px;cursor:zoom-in;
}
.figure img{width:100%;display:block;transition:transform .35s ease;}
.figure:hover img{transform:scale(1.02);}
figcaption{
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.04em;color:var(--ink-faint);
  padding:6px 2px 0;
}

/* PC games: figure full width, 16:9, image on top / text below */
.media-stack .figure img{aspect-ratio:16/9;object-fit:cover;}

/* screenshots shown at their natural ratio, never cropped */
.media-stack .figure.shot img{aspect-ratio:auto;object-fit:contain;height:auto;}

.sub-figure{margin-top:16px !important;aspect-ratio:16/9;flex:none !important;}
.sub-figure img{width:100%;height:100%;object-fit:cover !important;}

/* Mobile games: figure left (portrait-friendly) / text right */
.media-row{
  display:flex;gap:clamp(20px,4vw,36px);align-items:flex-start;
}
.media-row .figure{
  flex:0 0 clamp(180px,32vw,300px);
  margin-bottom:0;
  aspect-ratio:3/4;
  display:flex;align-items:center;justify-content:center;
}
.media-row .figure img{width:100%;height:100%;object-fit:contain;}
.media-row .media-text{flex:1;min-width:0;}
.media-row .media-text p{margin-bottom:14px;}

/* screenshots keep their own ratio instead of a fixed frame */
.media-row .figure.shot{aspect-ratio:auto;display:block;}
.media-row .figure.shot img{height:auto;object-fit:contain;}

.media-row.flip{flex-direction:row-reverse;}

@media (max-width:700px){
  .media-row,.media-row.flip{flex-direction:column;}
  .media-row .figure{flex-basis:auto;width:100%;aspect-ratio:4/3;}
  .media-row .figure.shot{aspect-ratio:auto;max-width:380px;}
}

.download-bar{
  display:flex;justify-content:center;padding:26px var(--pad) 6px;
}

/* ---------- prev / next project nav ---------- */
.project-nav{
  display:grid;grid-template-columns:1fr 1fr;gap:clamp(14px,2.5vw,24px);
  max-width:1180px;margin:10px auto 0;padding-top:34px;
  border-top:2px double var(--border);
}
.pn{
  display:block;text-decoration:none;color:var(--ink);
  background:var(--paper-raised);border:1px solid var(--border);
  padding:16px 20px;
  box-shadow:2px 2px 0 rgba(32,29,22,.06);
  transition:transform .2s ease,box-shadow .2s ease;
}
.pn:hover,.pn:focus-visible{
  transform:translateY(-3px);
  box-shadow:0 2px 4px rgba(32,29,22,.10),0 10px 24px rgba(32,29,22,.14);
  outline:none;
}
.pn .pn-label{
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;
  color:var(--ink-faint);display:block;margin-bottom:4px;
}
.pn .pn-title{font-family:var(--font-slab);font-weight:700;font-size:1.1em;}
.pn.next{text-align:right;}
@media (max-width:560px){
  .pn{padding:13px 15px;}
  .pn .pn-title{font-size:1em;}
}

/* ---------- reveal-on-scroll ----------
   Uses the standalone `translate` property so it never
   conflicts with `transform` (card tilt + hover scale). */
.reveal{opacity:0;translate:0 18px;transition:opacity .5s ease,translate .5s ease;}
.reveal.is-visible{opacity:1;translate:0 0;}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;translate:0 0;}
}

/* ---------- lightbox ---------- */
.lightbox{
  position:fixed;inset:0;background:rgba(32,29,22,.86);
  display:flex;align-items:center;justify-content:center;
  padding:5vh 5vw;z-index:100;opacity:0;pointer-events:none;
  transition:opacity .2s ease;
}
.lightbox.is-open{opacity:1;pointer-events:auto;}
.lightbox img{max-width:100%;max-height:90vh;border:1px solid rgba(255,255,255,.2);}
.lightbox-close{
  position:absolute;top:20px;right:24px;
  font-family:var(--font-mono);font-size:13px;letter-spacing:.08em;text-transform:uppercase;
  color:var(--paper);background:transparent;border:1px solid rgba(255,255,255,.4);
  padding:8px 14px;cursor:pointer;
}
.lightbox-close:hover{background:rgba(255,255,255,.12);}