/* ==========================================================================
   FRIKHIII — Brand Stylesheet
   Design tokens:
   Colors  — Void #0B0B10 · Surface #16161D · Bone #F2F1ED ·
             Slate #85838F · Signal #4DE8C0 · Flare #FF5A3C
   Type    — Display: Space Grotesk · Body: Inter · Mono: JetBrains Mono
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Inter:wght@400;500;600&family=JetBrains+Mono:wght@400;500&display=swap');

:root{
  --void:        #0B0B10;
  --surface:     #16161D;
  --surface-2:   #1D1D26;
  --line:        #2A2A34;
  --bone:        #F2F1ED;
  --slate:       #85838F;
  --signal:      #4DE8C0;
  --signal-dim:  rgba(77,232,192,0.14);
  --flare:       #FF5A3C;
  --flare-dim:   rgba(255,90,60,0.14);

  --font-display: 'Space Grotesk', sans-serif;
  --font-body:    'Inter', sans-serif;
  --font-mono:    'JetBrains Mono', monospace;

  --container: 1180px;
  --nav-h: 84px;

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

*,*::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; scroll-behavior:auto !important; }
}

body{
  margin:0;
  background:var(--void);
  color:var(--bone);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
ul{ list-style:none; margin:0; padding:0; }
button{ font-family:inherit; cursor:pointer; }

::selection{ background:var(--signal); color:var(--void); }

:focus-visible{
  outline:2px solid var(--signal);
  outline-offset:3px;
}

.wrap{
  max-width:var(--container);
  margin:0 auto;
  padding:0 32px;
}

/* Background grain / vignette so flat black never feels cheap */
.grain{
  position:fixed; inset:0; pointer-events:none; z-index:1;
  background-image:radial-gradient(circle at 20% 20%, rgba(77,232,192,0.05), transparent 45%),
                    radial-gradient(circle at 85% 75%, rgba(255,90,60,0.05), transparent 40%);
  mix-blend-mode:screen;
}

/* ---------- Eyebrow / mono labels ---------- */
.eyebrow{
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:0.06em;
  color:var(--signal);
  display:flex;
  align-items:center;
  gap:10px;
  margin:0 0 18px;
  text-transform:lowercase;
}
.eyebrow::before{
  content:"";
  width:22px; height:1px;
  background:var(--signal);
}

/* ---------- Nav ---------- */
.site-nav{
  position:fixed; top:0; left:0; right:0; z-index:100;
  height:var(--nav-h);
  display:flex; align-items:center;
  background:linear-gradient(to bottom, rgba(11,11,16,0.92), rgba(11,11,16,0));
  backdrop-filter:blur(6px);
  transition:background .3s var(--ease);
}
.site-nav .wrap{ display:flex; align-items:center; justify-content:space-between; width:100%; }

.logo-mark{
  font-family:var(--font-display);
  font-weight:700;
  font-size:22px;
  letter-spacing:-0.01em;
  display:flex; align-items:center; gap:8px;
}
.logo-mark span{ color:var(--signal); }

.nav-links{ display:flex; gap:40px; }
.nav-links a{
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:0.03em;
  color:var(--slate);
  position:relative;
  padding:6px 0;
  transition:color .25s var(--ease);
}
.nav-links a::after{
  content:"";
  position:absolute; left:0; right:0; bottom:0; height:1px;
  background:var(--signal);
  transform:scaleX(0); transform-origin:left;
  transition:transform .3s var(--ease);
}
.nav-links a:hover, .nav-links a.active{ color:var(--bone); }
.nav-links a.active::after, .nav-links a:hover::after{ transform:scaleX(1); }

.nav-cta{
  font-family:var(--font-mono);
  font-size:13px;
  border:1px solid var(--line);
  padding:9px 18px;
  border-radius:999px;
  transition:border-color .25s var(--ease), color .25s var(--ease);
}
.nav-cta:hover{ border-color:var(--signal); color:var(--signal); }

.nav-toggle{
  display:none;
  background:none; border:0;
  width:32px; height:22px;
  position:relative;
}
.nav-toggle span{
  position:absolute; left:0; right:0; height:1.5px; background:var(--bone);
  transition:transform .3s var(--ease), opacity .3s var(--ease);
}
.nav-toggle span:nth-child(1){ top:0; }
.nav-toggle span:nth-child(2){ top:10px; }
.nav-toggle span:nth-child(3){ top:20px; }
.nav-toggle.open span:nth-child(1){ transform:translateY(10px) rotate(45deg); }
.nav-toggle.open span:nth-child(2){ opacity:0; }
.nav-toggle.open span:nth-child(3){ transform:translateY(-10px) rotate(-45deg); }

.mobile-panel{
  position:fixed; inset:var(--nav-h) 0 0 0; z-index:99;
  background:var(--void);
  display:flex; flex-direction:column;
  padding:40px 32px;
  gap:28px;
  transform:translateY(-8px);
  opacity:0; pointer-events:none;
  transition:opacity .3s var(--ease), transform .3s var(--ease);
}
.mobile-panel.open{ opacity:1; pointer-events:auto; transform:translateY(0); }
.mobile-panel a{ font-family:var(--font-display); font-size:32px; font-weight:600; }

@media (max-width:860px){
  .nav-links{ display:none; }
  .nav-cta{ display:none; }
  .nav-toggle{ display:block; }
}

/* ---------- Typography helpers ---------- */
h1,h2,h3{
  font-family:var(--font-display);
  font-weight:700;
  letter-spacing:-0.02em;
  margin:0;
}
.section-title{
  font-size:clamp(32px,4.4vw,52px);
  line-height:1.05;
  max-width:14ch;
}
.body-lg{ font-size:19px; color:var(--slate); line-height:1.7; }
.mono-tag{
  font-family:var(--font-mono);
  font-size:12px;
  color:var(--slate);
  border:1px solid var(--line);
  border-radius:999px;
  padding:5px 12px;
  display:inline-block;
}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex; align-items:center; gap:10px;
  font-family:var(--font-mono);
  font-size:14px;
  padding:15px 26px;
  border-radius:999px;
  border:1px solid transparent;
  transition:transform .25s var(--ease), background .25s var(--ease), border-color .25s var(--ease), color .25s var(--ease);
}
.btn-primary{ background:var(--bone); color:var(--void); }
.btn-primary:hover{ background:var(--signal); transform:translateY(-2px); }
.btn-outline{ border-color:var(--line); color:var(--bone); }
.btn-outline:hover{ border-color:var(--signal); color:var(--signal); transform:translateY(-2px); }
.btn-flare{ background:var(--flare); color:var(--void); }
.btn-flare:hover{ transform:translateY(-2px); filter:brightness(1.08); }

/* ---------- Section rhythm ---------- */
section{ position:relative; padding:120px 0; }
.section-head{
  display:flex; justify-content:space-between; align-items:flex-end;
  gap:24px; margin-bottom:64px; flex-wrap:wrap;
}

.divider{ border:0; border-top:1px solid var(--line); margin:0; }

/* ---------- Cards ---------- */
.card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:18px;
  padding:32px;
  transition:border-color .3s var(--ease), transform .3s var(--ease);
}
.card:hover{ border-color:var(--signal); transform:translateY(-4px); }

.project-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:18px;
  overflow:hidden;
  transition:border-color .3s var(--ease), transform .3s var(--ease);
  display:flex; flex-direction:column;
}
.project-card:hover{ border-color:var(--signal); transform:translateY(-6px); }
.project-card .thumb{ aspect-ratio:4/3; overflow:hidden; background:var(--surface-2); }
.project-card .thumb img{ width:100%; height:100%; object-fit:cover; transition:transform .5s var(--ease); }
.project-card:hover .thumb img{ transform:scale(1.06); }
.project-card .body{ padding:24px; display:flex; flex-direction:column; gap:10px; flex:1; }
.project-card .tags{ display:flex; gap:8px; flex-wrap:wrap; margin-top:auto; padding-top:14px; }

.grid-3{ display:grid; grid-template-columns:repeat(3,1fr); gap:24px; }
.grid-2{ display:grid; grid-template-columns:repeat(2,1fr); gap:24px; }
@media (max-width:900px){ .grid-3{ grid-template-columns:1fr 1fr; } }
@media (max-width:640px){ .grid-3, .grid-2{ grid-template-columns:1fr; } }

/* reveal-on-scroll (js toggles .in) */
.reveal{ opacity:0; transform:translateY(28px); transition:opacity .8s var(--ease), transform .8s var(--ease); }
.reveal.in{ opacity:1; transform:none; }

/* ---------- Footer ---------- */
.site-footer{
  border-top:1px solid var(--line);
  padding:64px 0 40px;
}
.footer-top{
  display:flex; justify-content:space-between; align-items:flex-start;
  gap:40px; flex-wrap:wrap; margin-bottom:48px;
}
.footer-links{ display:flex; gap:32px; flex-wrap:wrap; }
.footer-links a{ font-family:var(--font-mono); font-size:13px; color:var(--slate); transition:color .2s var(--ease); }
.footer-links a:hover{ color:var(--signal); }
.footer-bottom{
  display:flex; justify-content:space-between; font-family:var(--font-mono);
  font-size:12px; color:var(--slate); flex-wrap:wrap; gap:12px;
}

/* ---------- Page transition overlay ----------
   Default state = hidden. Pages that want a "covering" first paint
   (to avoid a flash before fonts/canvas are ready) add class="show"
   directly in the markup; js/nav.js fades it out shortly after load. */
.page-transition{
  position:fixed; inset:0; z-index:9999;
  background:var(--void);
  display:flex; align-items:center; justify-content:center;
  opacity:0; visibility:hidden; pointer-events:none;
  transition:opacity .5s var(--ease), visibility 0s linear .5s;
}
.page-transition.show{
  opacity:1; visibility:visible; pointer-events:auto;
  transition:opacity .5s var(--ease), visibility 0s linear 0s;
}
.page-transition .mark{
  font-family:var(--font-display); font-weight:700; font-size:20px; color:var(--signal);
  opacity:0.9;
}

/* ---------- Hero shared ---------- */
.hero{
  min-height:100vh;
  display:flex; align-items:center;
  padding-top:var(--nav-h);
  position:relative;
}
.hero .wrap{ position:relative; z-index:2; pointer-events:none; }
.hero .wrap a, .hero .wrap button{ pointer-events:auto; }
#hero-canvas{
  position:absolute; top:0; right:0; width:56%; height:100%;
  z-index:0; opacity:0.95;
}
@media (max-width:900px){ #hero-canvas{ position:relative; width:100%; height:340px; opacity:1; } }

.hero-title{
  font-size:clamp(46px,8vw,104px);
  line-height:0.96;
  max-width:11ch;
  position:relative; z-index:2;
}
.hero-title .out{ color:var(--slate); -webkit-text-stroke:1px var(--slate); color:transparent; }
.hero .body-lg{ max-width:42ch; margin:26px 0 40px; position:relative; z-index:2; }
.hero-actions{ display:flex; gap:16px; flex-wrap:wrap; position:relative; z-index:2; }

/* Stat strip */
.stat-strip{
  display:flex; flex-wrap:wrap; gap:0;
  border-top:1px solid var(--line); border-bottom:1px solid var(--line);
}
.stat-strip .stat{
  flex:1; min-width:150px; padding:28px 24px;
  border-right:1px solid var(--line);
}
.stat-strip .stat:last-child{ border-right:0; }
.stat-strip .num{ font-family:var(--font-display); font-size:36px; font-weight:700; color:var(--signal); }
.stat-strip .label{ font-family:var(--font-mono); font-size:12px; color:var(--slate); margin-top:6px; }

/* Split layout (about preview / about page) */
.split{ display:grid; grid-template-columns:0.85fr 1.15fr; gap:64px; align-items:center; }
@media (max-width:860px){ .split{ grid-template-columns:1fr; } }
.split img{ border-radius:20px; width:100%; aspect-ratio:4/5; object-fit:cover; border:1px solid var(--line); }

.skill-tags{ display:flex; flex-wrap:wrap; gap:10px; margin-top:20px; }
.skill-tags span{
  font-family:var(--font-mono); font-size:12.5px; color:var(--bone);
  border:1px solid var(--line); border-radius:999px; padding:7px 14px;
  transition:border-color .2s, color .2s;
}
.skill-tags span:hover{ border-color:var(--signal); color:var(--signal); }

/* Timeline (about page) */
.timeline{ display:flex; flex-direction:column; }
.timeline-item{
  display:grid; grid-template-columns:110px 1fr; gap:24px;
  padding:28px 0; border-bottom:1px solid var(--line);
}
.timeline-item:first-child{ border-top:1px solid var(--line); }
.timeline-item .year{ font-family:var(--font-mono); color:var(--signal); font-size:14px; }
.timeline-item h3{ font-size:19px; margin-bottom:6px; }
.timeline-item p{ color:var(--slate); margin:0; }
@media (max-width:600px){ .timeline-item{ grid-template-columns:1fr; gap:6px; } }

/* CTA band */
.cta-band{
  border:1px solid var(--line); border-radius:24px;
  padding:72px 48px; text-align:center;
  background:radial-gradient(circle at 50% 0%, rgba(77,232,192,0.08), transparent 60%);
}
.cta-band .btn{ margin-top:32px; }
@media (max-width:600px){ .cta-band{ padding:48px 24px; } }

/* Contact page link cards */
.contact-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:20px; }
@media (max-width:760px){ .contact-grid{ grid-template-columns:1fr; } }
.contact-card{
  display:flex; flex-direction:column; gap:14px;
  padding:30px; border:1px solid var(--line); border-radius:18px;
  transition:border-color .3s var(--ease), transform .3s var(--ease), background .3s var(--ease);
}
.contact-card:hover{ border-color:var(--signal); transform:translateY(-4px); background:var(--surface); }
.contact-card .icon{ font-size:26px; }
.contact-card .label{ font-family:var(--font-mono); font-size:12px; color:var(--slate); }
.contact-card .value{ font-family:var(--font-display); font-size:19px; font-weight:600; word-break:break-word; }

.filter-row{ display:flex; gap:10px; flex-wrap:wrap; margin-bottom:40px; }
.filter-row button{
  font-family:var(--font-mono); font-size:12.5px; background:none;
  border:1px solid var(--line); color:var(--slate); border-radius:999px; padding:9px 18px;
  transition:border-color .2s, color .2s, background .2s;
}
.filter-row button.active, .filter-row button:hover{ border-color:var(--signal); color:var(--bone); background:var(--signal-dim); }

/* Empty-state placeholder note (visible marker for content still to fill) */
.todo{
  font-family:var(--font-mono);
  font-size:12px;
  color:var(--flare);
  background:var(--flare-dim);
  border:1px dashed var(--flare);
  border-radius:8px;
  padding:3px 8px;
  display:inline-block;
}