/* ---------------------------------------------------------
   Feier Yang — Portfolio
   Design system v2 — blue-gray ground, salmon accent,
   mascot eyes + bunny, tilt+sweep cards
--------------------------------------------------------- */
@import url('https://fonts.googleapis.com/css2?family=Archivo+Black&family=Space+Grotesk:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root{
  --bg: #e7f2f4;
  --bg-deep: #d8ebee;
  --ink: #14181c;
  --paper: #ffffff;
  --ink-soft: #3a4247;
  --salmon: #ff9d85;
  --salmon-soft: #ffd9cd;
  --salmon-deep: #9a3d24;
  --warm-glow: #ffe1a8;
  --line: rgba(20,24,28,0.12);
  --max-w: 1180px;
  --radius: 16px;
  --tilt-max: 4.6deg;

  --display-black: 'Archivo Black', sans-serif;
  --body: 'Space Grotesk', -apple-system, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, Menlo, monospace;
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin:0;
  font-family: var(--body);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img{ max-width:100%; display:block; }
a{ color: inherit; text-decoration:none; }
.wrap{
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 32px;
  position: relative;
}

/* ---------- Nav + mascot eyes ---------- */
.nav{
  position: sticky; top:0; z-index: 60;
  background: rgba(231,242,244,0.86);
  backdrop-filter: blur(10px);
  border-bottom: 1.5px solid var(--line);
}
.nav .wrap{
  display:flex; align-items:center; justify-content:space-between;
  height: 80px;
}
.nav-brand{ display:flex; align-items:center; gap:14px; }
.nav-logo{
  font-family: var(--display-black);
  font-size: 1.05rem;
  letter-spacing: -0.01em;
}
.eyes{ display:flex; gap:6px; }
.eye{
  width:26px; height:26px; border-radius:50%;
  background:#fff; border:2px solid var(--ink);
  position:relative; overflow:hidden; transform-origin:center;
  transition: transform .08s ease-out;
}
.eye .pupil{
  width:11px; height:11px; border-radius:50%; background:var(--ink);
  position:absolute; top:50%; left:50%; transform:translate(-50%,-50%);
  transition: transform .05s linear;
}
.eye.blink{ animation: blink .16s ease-in-out; }
@keyframes blink{ 0%,100%{ transform:scaleY(1); } 50%{ transform:scaleY(0.08); } }

.nav-links{ display:flex; gap: 26px; align-items:center; }
.nav-links a{
  font-family: var(--mono); font-size: 0.78rem; text-transform:uppercase; letter-spacing:.04em;
  color: var(--ink); transition: color .15s ease;
}
.nav-links a:hover{ color: var(--salmon-deep); }
.nav-links .btn{
  color: var(--bg); background: var(--ink); padding: 10px 18px; border-radius: 999px; font-weight:600;
}
.nav-links .btn:hover{ background: var(--salmon); color: var(--ink); }
.nav-toggle{ display:none; background:none; border:none; cursor:pointer; }

/* ---------- Bunny mascot, fixed left, sways with scroll ---------- */
.bunny-anchor{
  position:fixed; left:-10px; bottom:0; z-index:5; width:150px; pointer-events:none;
  transform-origin: 50% 100%; will-change: transform;
}
.bunny-anchor img{ width:100%; }
@media (max-width: 980px){ .bunny-anchor{ display:none; } }

/* ---------- Hero ---------- */
.hero{ padding: 100px 0 76px; }
.hero-eyebrow{
  font-family: var(--mono); text-transform: uppercase; letter-spacing:.08em; font-size: 0.76rem;
  color: var(--salmon-deep); background: var(--salmon-soft); display:inline-block; padding:4px 12px; border-radius:999px;
  margin-bottom: 24px;
}
.hero h1{
  font-family: var(--display-black);
  font-size: clamp(2.8rem, 7vw, 5.2rem);
  line-height: 0.98;
  margin: 0 0 26px;
  letter-spacing: -0.01em;
  max-width: 15ch;
  text-transform: uppercase;
}
.hero h1 .accent{ color: var(--salmon); -webkit-text-stroke: 1.5px var(--ink); }
.hero p{
  font-size: 1.1rem; color: var(--ink-soft); max-width: 54ch; margin: 0 0 34px;
}
.hero-actions{ display:flex; gap:16px; flex-wrap:wrap; }
.btn-primary, .btn-ghost{
  display:inline-flex; align-items:center; gap:8px;
  padding: 13px 26px; border-radius: 999px; font-weight:600; font-size:0.95rem;
  border: 2px solid var(--ink);
  transition: all .18s ease;
}
.btn-primary{ background: var(--ink); color: var(--bg); }
.btn-primary:hover{ background: var(--salmon); color: var(--ink); transform: translateY(-2px); }
.btn-ghost{ color: var(--ink); }
.btn-ghost:hover{ background: var(--ink); color: var(--bg); }

/* ---------- Section heading ---------- */
.section{ padding: 88px 0; border-top: 1.5px solid var(--line); }
.section-head{ margin-bottom: 44px; }
.section-eyebrow{
  font-family: var(--mono); color: var(--salmon-deep); letter-spacing:.06em; text-transform:uppercase; font-size:0.76rem;
}
.section-head h2{
  font-family: var(--display-black); font-size: clamp(2rem, 4.5vw, 2.8rem); margin: 10px 0 0;
  text-transform: uppercase;
}

/* ---------- About ---------- */
.about-grid{
  display:grid; grid-template-columns: 300px 1fr; gap: 56px; align-items:start;
}
.about-portrait{
  border-radius: var(--radius); overflow:hidden; aspect-ratio: 4/5; background: var(--bg-deep);
  border: 2px solid var(--ink); box-shadow: 6px 6px 0 var(--ink);
}
.about-portrait img{ width:100%; height:100%; object-fit:cover; }
.about-body p{ font-size:1.05rem; color: var(--ink-soft); margin: 0 0 18px; }
.about-links{ display:flex; gap:14px; flex-wrap:wrap; margin-top: 22px; }

/* ---------- Filters ---------- */
.filters{ display:flex; gap:10px; flex-wrap:wrap; margin-bottom: 36px; }
.filter-btn{
  font-family: var(--mono); text-transform: uppercase; letter-spacing:.03em;
  padding: 9px 18px; border-radius: 999px; border:2px solid var(--ink);
  font-size:0.78rem; font-weight:600; color: var(--ink); cursor:pointer; background:transparent;
  transition: all .15s ease;
}
.filter-btn.active, .filter-btn:hover{ background: var(--salmon); border-color: var(--salmon); }

/* ---------- Project grid: tilt + light-sweep cards ---------- */
.grid{
  display:grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 30px;
}
.card{
  background: var(--paper); border-radius: var(--radius); overflow:hidden;
  border: 2px solid var(--ink);
  box-shadow: 5px 5px 0 var(--ink);
  transition: transform .2s ease, box-shadow .2s ease;
  display:flex; flex-direction:column;
}
.card:hover{ transform: translate(-3px,-3px); box-shadow: 8px 8px 0 var(--ink); }

.tilt-frame{ perspective: 900px; }
.card-media{
  aspect-ratio: 4/3; background: var(--bg-deep); position:relative; overflow:hidden;
  transform-style: preserve-3d; transition: transform .15s ease-out;
}
.card-media .sweep{
  content:''; position:absolute; inset:-40% -60%;
  background: linear-gradient(115deg, transparent 40%, rgba(255,225,168,0.55) 48%, rgba(255,225,168,0.9) 50%, rgba(255,225,168,0.55) 52%, transparent 60%);
  transform: translateX(-120%); pointer-events:none;
}
.card:hover .card-media .sweep{ transition: transform .7s cubic-bezier(.2,.7,.3,1); transform: translateX(120%); }
.card-media img{ width:100%; height:100%; object-fit:cover; }
.card-media.empty{
  display:flex; align-items:center; justify-content:center;
  background: repeating-linear-gradient(135deg, var(--bg-deep), var(--bg-deep) 14px, #f1f9fa 14px, #f1f9fa 28px);
}
.card-media.empty .mono{ font-family: var(--display-black); font-size: 2.2rem; color: var(--ink); opacity:.18; }
.card-body{ padding: 22px 24px 26px; flex:1; display:flex; flex-direction:column; }
.card-tags{ display:flex; gap:6px; flex-wrap:wrap; margin-bottom:12px; }
.tag{
  font-family: var(--mono); font-size:0.68rem; font-weight:600; letter-spacing:.03em; text-transform:uppercase;
  color: var(--salmon-deep); background: var(--salmon-soft); padding:3px 10px; border-radius:999px;
}
.card-body h3{ font-family: var(--display-black); font-size:1.3rem; margin:0 0 8px; text-transform:uppercase; }
.card-body p{ color: var(--ink-soft); font-size:0.92rem; margin:0; flex:1; }
.card-meta{ margin-top:16px; font-family: var(--mono); font-size:0.72rem; color: var(--ink-soft); display:flex; justify-content:space-between; }

/* ---------- Footer / contact ---------- */
.contact{ text-align:center; }
.contact h2{ font-family: var(--display-black); font-size: clamp(2.2rem,5.5vw,3.4rem); margin: 14px 0 26px; text-transform:uppercase; }
.contact-actions{ display:flex; gap:16px; justify-content:center; flex-wrap:wrap; }
footer{ padding: 44px 0; border-top:2px solid var(--ink); }
footer .wrap{ display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:12px; }
footer p{ color: var(--ink-soft); font-size:0.82rem; margin:0; font-family: var(--mono); }
.footer-links{ display:flex; gap:20px; }
.footer-links a{ color: var(--ink-soft); font-size:0.82rem; font-family: var(--mono); }
.footer-links a:hover{ color: var(--salmon-deep); }

/* ---------- Project detail page ---------- */
.project-hero{ padding: 60px 0 40px; }
.project-back{
  display:inline-flex; align-items:center; gap:6px; color: var(--ink-soft); font-size:0.84rem; font-weight:600;
  font-family: var(--mono); text-transform: uppercase; letter-spacing:.03em;
  margin-bottom: 28px;
}
.project-back:hover{ color: var(--salmon-deep); }
.project-hero h1{ font-family: var(--display-black); font-size: clamp(2.4rem,5.5vw,3.8rem); margin:16px 0 20px; text-transform:uppercase; line-height:1.02; }
.project-meta-row{
  display:flex; flex-wrap:wrap; gap: 30px; padding: 24px 0; border-top:2px solid var(--ink); border-bottom:2px solid var(--ink);
  margin: 28px 0 44px;
}
.project-meta-row .meta-item{ font-size:0.88rem; }
.project-meta-row .meta-item span{ display:block; color: var(--ink-soft); font-family: var(--mono); font-size:0.7rem; text-transform:uppercase; letter-spacing:.05em; margin-bottom:5px; }
.project-cover{ border-radius: var(--radius); overflow:hidden; margin-bottom: 50px; background: var(--bg-deep); border:2px solid var(--ink); box-shadow: 6px 6px 0 var(--ink); }
.project-body{ display:grid; grid-template-columns: minmax(0,1fr); gap: 56px; }
.project-section{ display:grid; grid-template-columns: 260px 1fr; gap: 40px; padding-bottom: 8px; }
.project-section h3{ font-family: var(--display-black); font-size:1.15rem; margin:0; text-transform:uppercase; }
.project-section p{ color: var(--ink-soft); margin:0; }
.project-gallery{
  display:grid; grid-template-columns: repeat(auto-fill, minmax(280px,1fr)); gap: 20px; margin: 12px 0 56px;
}
.project-gallery img, .project-gallery video{ border-radius: 12px; width:100%; border:2px solid var(--ink); }
.project-video{ border-radius: var(--radius); overflow:hidden; margin: 12px 0 56px; aspect-ratio:16/9; border:2px solid var(--ink); }
.project-video iframe{ width:100%; height:100%; border:0; }
.project-links{ display:flex; gap:12px; flex-wrap:wrap; margin: 8px 0 56px; }
.doc-link{
  display:inline-flex; align-items:center; gap:8px; padding:10px 18px; border-radius:999px;
  border:2px solid var(--ink); font-size:0.84rem; font-weight:600; font-family: var(--mono);
}
.doc-link:hover{ background: var(--salmon); border-color: var(--salmon); }
.project-nav{
  display:flex; justify-content:space-between; padding: 40px 0; border-top:2px solid var(--ink); margin-top: 20px;
  font-family: var(--mono); font-size: 0.85rem;
}
.project-nav a:hover{ color: var(--salmon-deep); }

@media (max-width: 860px){
  .about-grid{ grid-template-columns: 1fr; }
  .about-portrait{ max-width: 240px; }
  .project-section{ grid-template-columns: 1fr; gap:10px; }
  .nav-links{
    position: fixed; inset: 80px 0 0 0; background: var(--bg); flex-direction:column;
    padding: 32px; gap: 22px; transform: translateX(100%); transition: transform .25s ease;
  }
  .nav-links.open{ transform: translateX(0); }
  .nav-toggle{ display:block; }
}