/* === RESET === */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}

/* === TOKENS === */
:root{
  --ink:        #0d0d0d;
  --ink-2:      #3a3a3a;
  --ink-3:      #717171;
  --paper:      #fafaf8;
  --surface:    #f2f1ed;
  --surface-2:  #e8e7e2;
  --accent:     #1a1a1a;
  --gold:       #b8860b;
  --green:      #1e6c3e;
  --border:     rgba(0,0,0,0.09);
  --radius-sm:  6px;
  --radius:     12px;
  --radius-lg:  20px;
  --ff-serif:   'Instrument Serif', Georgia, serif;
  --ff-sans:    'DM Sans', system-ui, sans-serif;
  --ease:       cubic-bezier(.4,0,.2,1);
}

body{
  background:var(--paper);
  color:var(--ink);
  font-family:var(--ff-sans);
  font-size:1rem;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}

a{color:inherit;text-decoration:none}
strong{font-weight:500}

/* === NAV === */
#nav{
  position:fixed;top:0;left:0;right:0;
  z-index:100;
  padding:0 2rem;
  background:rgba(250,250,248,0);
  transition:background .3s var(--ease),border-bottom .3s;
}
#nav.scrolled{
  background:rgba(250,250,248,0.92);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border);
}
.nav-inner{
  max-width:1180px;margin:0 auto;
  height:64px;
  display:flex;align-items:center;justify-content:space-between;
}
.nav-brand{
  font-family:var(--ff-sans);
  font-weight:500;
  font-size:.95rem;
  letter-spacing:-.01em;
}
.nav-links{
  display:flex;align-items:center;gap:2rem;
  list-style:none;
}
.nav-links a{
  font-size:.88rem;
  color:var(--ink-3);
  font-weight:400;
  transition:color .2s;
}
.nav-links a:hover{color:var(--ink)}
.nav-contact{
  color:var(--ink) !important;
  font-weight:500 !important;
  border-bottom:1px solid var(--ink);
  padding-bottom:1px;
}

.burger{
  display:none;
  background:none;border:none;cursor:pointer;
  flex-direction:column;gap:6px;
}
.burger span{
  display:block;width:22px;height:1.5px;
  background:var(--ink);
  transition:.2s;
}

.mobile-nav{
  display:none;
  flex-direction:column;
  padding:1rem 2rem 1.5rem;
  background:rgba(250,250,248,.97);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border);
}
.mobile-nav.open{display:flex}
.mobile-nav a{
  padding:.7rem 0;
  font-size:1.05rem;
  border-bottom:1px solid var(--border);
  color:var(--ink);
}

/* === BUTTONS === */
.btn-dark{
  display:inline-block;
  background:var(--ink);
  color:var(--paper);
  padding:.75rem 1.6rem;
  border-radius:var(--radius-sm);
  font-size:.9rem;
  font-weight:500;
  letter-spacing:-.01em;
  transition:opacity .2s;
}
.btn-dark:hover{opacity:.85}
.btn-ghost{
  display:inline-block;
  color:var(--ink-2);
  font-size:.9rem;
  border-bottom:1px solid var(--border);
  padding-bottom:2px;
  transition:color .2s,border-color .2s;
}
.btn-ghost:hover{color:var(--ink);border-color:var(--ink)}

/* === HERO === */
#hero{
  min-height:100vh;
  padding:120px 2rem 0;
  display:flex;
  flex-direction:column;
}
.hero-inner{
  max-width:1180px;margin:0 auto;
  flex:1;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:4rem;
  align-items:center;
  padding-bottom:5rem;
}
.hero-status{
  display:inline-flex;align-items:center;gap:.5rem;
  font-size:.82rem;color:var(--ink-3);
  margin-bottom:1.5rem;
}
.status-dot{
  width:7px;height:7px;border-radius:50%;
  background:#22c55e;
  animation:ping 2s ease infinite;
}
@keyframes ping{
  0%,100%{box-shadow:0 0 0 0 rgba(34,197,94,.4)}
  50%{box-shadow:0 0 0 5px rgba(34,197,94,0)}
}
.hero-h1{
  font-family:var(--ff-serif);
  font-size:clamp(3.2rem,5.5vw,5rem);
  line-height:1.06;
  letter-spacing:-.03em;
  font-weight:400;
  margin-bottom:1.5rem;
}
.hero-h1 em{font-style:italic;color:var(--ink-2)}
.hero-sub{
  font-size:1rem;
  color:var(--ink-2);
  max-width:460px;
  line-height:1.75;
  margin-bottom:2rem;
}
.hero-ctas{display:flex;gap:1rem;flex-wrap:wrap;align-items:center}

/* Achievement stack */
.achievement-stack{display:flex;flex-direction:column;gap:.75rem}
.ach-card{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:1.25rem 1.5rem;
}
.ach-top{border-left:3px solid var(--gold)}
.ach-bottom{border-left:3px solid var(--ink-3)}
.ach-label{font-size:.78rem;color:var(--ink-3);text-transform:uppercase;letter-spacing:.06em;margin-bottom:.3rem}
.ach-value{font-size:1.05rem;font-weight:500;color:var(--ink)}
.ach-sub{font-size:.8rem;color:var(--ink-3);margin-top:.2rem}
.ach-row{display:grid;grid-template-columns:1fr 1fr;gap:.75rem}
.ach-small{padding:1rem 1.25rem}
.ach-num{font-family:var(--ff-serif);font-size:2rem;line-height:1;margin-bottom:.3rem}

/* Marquee */
.hero-marquee{
  overflow:hidden;
  border-top:1px solid var(--border);
  padding:1rem 0;
  margin-top:auto;
}
.marquee-track{
  display:flex;
  gap:1.5rem;
  white-space:nowrap;
  animation:marquee 28s linear infinite;
}
.marquee-track span{font-size:.82rem;color:var(--ink-3)}
.dot-sep{color:var(--surface-2)}
@keyframes marquee{0%{transform:translateX(0)}100%{transform:translateX(-50%)}}

/* === SECTIONS === */
.section-inner{
  max-width:1180px;
  margin:0 auto;
  padding:6rem 2rem;
}
.section-tag{
  display:block;
  font-size:.75rem;
  text-transform:uppercase;
  letter-spacing:.1em;
  color:var(--ink-3);
  margin-bottom:.8rem;
}
.section-h2{
  font-family:var(--ff-serif);
  font-size:clamp(2rem,3.5vw,2.8rem);
  font-weight:400;
  letter-spacing:-.025em;
  margin-bottom:3rem;
}
.section-header{margin-bottom:0}

/* === PROJECTS === */
#work{background:var(--surface)}
.projects-list{display:flex;flex-direction:column}
.project-row{
  display:grid;
  grid-template-columns:160px 1fr 120px;
  gap:2rem;
  align-items:start;
  padding:2.5rem 0;
  border-top:1px solid var(--border);
  transition:background .2s;
}
.project-row:last-child{border-bottom:1px solid var(--border)}
.proj-meta{display:flex;flex-direction:column;gap:.5rem;padding-top:.25rem}
.proj-year{font-size:.82rem;color:var(--ink-3)}
.proj-award{
  display:inline-block;
  font-size:.72rem;
  padding:.25rem .6rem;
  border-radius:var(--radius-sm);
  background:var(--surface-2);
  color:var(--ink-2);
  width:fit-content;
}
.proj-award.winner{background:#fef9e7;color:#92660a}
.proj-award.finalist{background:#f8f8f8;color:#555}

.proj-title{
  font-family:var(--ff-serif);
  font-size:1.7rem;
  font-weight:400;
  letter-spacing:-.02em;
  margin-bottom:.15rem;
}
.proj-type{font-size:.82rem;color:var(--ink-3);margin-bottom:.8rem}
.proj-desc{font-size:.92rem;color:var(--ink-2);line-height:1.75;max-width:520px;margin-bottom:1rem}
.proj-stack{display:flex;flex-wrap:wrap;gap:.4rem}
.proj-stack span{
  font-size:.76rem;
  padding:.2rem .6rem;
  border-radius:100px;
  background:var(--surface-2);
  color:var(--ink-2);
}
.proj-links{
  display:flex;flex-direction:column;gap:.5rem;
  padding-top:.25rem;
  align-items:flex-end;
}
.proj-link{
  font-size:.85rem;
  color:var(--ink-3);
  border-bottom:1px solid transparent;
  padding-bottom:1px;
  transition:color .2s,border-color .2s;
}
.proj-link:hover{color:var(--ink);border-color:var(--ink)}

/* === EXPERIENCE === */
.exp-grid{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem}
.exp-card{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:1.8rem 2rem;
}
.exp-top{
  display:flex;
  justify-content:space-between;
  align-items:flex-start;
  margin-bottom:1.2rem;
  flex-wrap:wrap;gap:.5rem;
}
.exp-company{font-size:1.05rem;font-weight:500;margin-bottom:.2rem}
.exp-role{font-size:.88rem;color:var(--ink-2);display:flex;align-items:center;gap:.5rem;flex-wrap:wrap}
.exp-badge{
  font-size:.72rem;
  background:var(--surface-2);
  color:var(--ink-3);
  padding:.15rem .5rem;
  border-radius:3px;
}
.exp-date{font-size:.8rem;color:var(--ink-3);white-space:nowrap}
.exp-bullets{list-style:none;display:flex;flex-direction:column;gap:.7rem}
.exp-bullets li{
  font-size:.9rem;color:var(--ink-2);
  padding-left:1.1rem;
  position:relative;
  line-height:1.7;
}
.exp-bullets li::before{
  content:'—';
  position:absolute;left:0;
  color:var(--ink-3);font-size:.75rem;
  top:.28em;
}
.exp-bullets strong{color:var(--ink);font-weight:500}

/* === ABOUT === */
#about{background:var(--surface)}
.about-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:5rem;
  align-items:start;
}
.about-left p{
  font-size:.97rem;color:var(--ink-2);
  line-height:1.8;margin-bottom:1rem;
}
.about-left strong{color:var(--ink)}
.about-edu{
  margin:1.5rem 0;
  padding:1.25rem;
  background:var(--paper);
  border:1px solid var(--border);
  border-radius:var(--radius);
}
.edu-row{display:flex;gap:.8rem;align-items:center}
.edu-icon{font-size:1.5rem}
.edu-degree{font-size:.92rem;font-weight:500;margin-bottom:.15rem}
.edu-school{font-size:.8rem;color:var(--ink-3);line-height:1.5}
.about-links{display:flex;gap:1.5rem;flex-wrap:wrap}
.about-links a{
  font-size:.88rem;
  color:var(--ink-3);
  border-bottom:1px solid var(--border);
  padding-bottom:1px;
  transition:color .2s,border-color .2s;
}
.about-links a:hover{color:var(--ink);border-color:var(--ink)}

.skills-block{
  background:var(--paper);
  border:1px solid var(--border);
  border-radius:var(--radius);
  overflow:hidden;
  margin-bottom:1.5rem;
}
.skill-group{
  display:flex;align-items:center;gap:1rem;
  padding:.85rem 1.25rem;
  border-bottom:1px solid var(--border);
}
.skill-group:last-child{border-bottom:none}
.skill-label{
  font-size:.76rem;
  color:var(--ink-3);
  text-transform:uppercase;
  letter-spacing:.06em;
  min-width:80px;
  flex-shrink:0;
}
.skill-pills{display:flex;flex-wrap:wrap;gap:.35rem}
.skill-pills span{
  font-size:.78rem;
  padding:.2rem .55rem;
  border-radius:100px;
  background:var(--surface);
  color:var(--ink-2);
  border:1px solid var(--border);
}
.skill-pills.highlight span{
  background:#eff9f4;
  color:var(--green);
  border-color:rgba(30,108,62,.15);
}

.certs-block{display:flex;flex-direction:column;gap:.75rem}
.cert-row{
  display:flex;gap:.75rem;align-items:flex-start;
  padding:.9rem 1.1rem;
  background:var(--paper);
  border:1px solid var(--border);
  border-radius:var(--radius);
}
.cert-dot{
  width:6px;height:6px;border-radius:50%;
  background:var(--ink-3);
  flex-shrink:0;margin-top:.55rem;
}
.cert-name{font-size:.88rem;font-weight:500;margin-bottom:.1rem}
.cert-from{font-size:.78rem;color:var(--ink-3)}

/* === CONTACT === */
#contact{background:var(--ink)}
.contact-inner{
  display:grid;
  grid-template-columns:1fr 1.2fr;
  gap:5rem;
  align-items:start;
}
#contact .section-tag{color:rgba(255,255,255,.45)}
.contact-h2{
  font-family:var(--ff-serif);
  font-size:clamp(2rem,3.5vw,3rem);
  font-weight:400;
  letter-spacing:-.025em;
  color:#fff;
  margin-bottom:1rem;
  line-height:1.15;
}
.contact-sub{font-size:.92rem;color:rgba(255,255,255,.5);margin-bottom:1.5rem}
.contact-details{display:flex;flex-direction:column;gap:.6rem}
.contact-details a,.contact-details span{
  font-size:.92rem;
  color:rgba(255,255,255,.65);
  transition:color .2s;
}
.contact-details a:hover{color:#fff}

.contact-form{display:flex;flex-direction:column;gap:1rem}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
.field{display:flex;flex-direction:column;gap:.35rem}
.field label{font-size:.78rem;color:rgba(255,255,255,.45);letter-spacing:.04em;text-transform:uppercase}
.field input,.field textarea{
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.1);
  border-radius:var(--radius-sm);
  padding:.75rem 1rem;
  color:#fff;
  font-family:var(--ff-sans);
  font-size:.92rem;
  outline:none;
  transition:border-color .2s;
  resize:vertical;
}
.field input::placeholder,.field textarea::placeholder{color:rgba(255,255,255,.25)}
.field input:focus,.field textarea:focus{border-color:rgba(255,255,255,.3)}
.btn-submit{
  background:#fff;
  color:var(--ink);
  border:none;
  padding:.85rem 2rem;
  border-radius:var(--radius-sm);
  font-size:.92rem;
  font-weight:500;
  font-family:var(--ff-sans);
  cursor:pointer;
  transition:opacity .2s;
  width:fit-content;
  letter-spacing:-.01em;
}
.btn-submit:hover{opacity:.88}
.btn-submit:disabled{opacity:.5;cursor:not-allowed}
.form-status{font-size:.82rem;min-height:1rem;color:rgba(255,255,255,.5)}
.form-status.success{color:#4ade80}
.form-status.error{color:#f87171}

/* === FOOTER === */
footer{
  border-top:1px solid var(--border);
  padding:1.5rem 2rem;
  background:var(--paper);
}
.footer-inner{
  max-width:1180px;margin:0 auto;
  display:flex;justify-content:space-between;align-items:center;
  font-size:.82rem;color:var(--ink-3);
  flex-wrap:wrap;gap:.5rem;
}
.footer-inner a{color:var(--ink-3);transition:color .2s}
.footer-inner a:hover{color:var(--ink)}

/* === REVEAL === */
[data-reveal]{
  opacity:0;
  transform:translateY(24px);
  transition:opacity .65s var(--ease),transform .65s var(--ease);
}
[data-reveal].visible{opacity:1;transform:translateY(0)}

/* === RESPONSIVE === */
@media(max-width:900px){
  .hero-inner{grid-template-columns:1fr;gap:3rem;padding-bottom:3rem}
  .hero-right{display:none}
  .project-row{grid-template-columns:1fr;gap:1rem}
  .proj-links{flex-direction:row;align-items:flex-start}
  .proj-meta{flex-direction:row;align-items:center}
  .exp-grid{grid-template-columns:1fr}
  .about-grid{grid-template-columns:1fr;gap:3rem}
  .contact-inner{grid-template-columns:1fr;gap:3rem}
  .field-row{grid-template-columns:1fr}
}
@media(max-width:640px){
  .nav-links{display:none}
  .burger{display:flex}
  .section-inner{padding:4rem 1.25rem}
  #hero{padding:100px 1.25rem 0}
  .project-row{padding:2rem 0}
}
@media(prefers-reduced-motion:reduce){
  [data-reveal]{transition:none;opacity:1;transform:none}
  .marquee-track{animation:none}
  .status-dot{animation:none}
}