/* =========================================================
   DESIGN TOKENS
========================================================= */
:root{
  --bg:#05070d;
  --bg-soft:#070a13;
  --surface:#0d1220;
  --surface-hover:#131a2c;
  --text:#eef1f8;
  --muted:#8b96ad;
  --accent:#3fd7ff;
  --accent-2:#7c6cff;
  --border:rgba(255,255,255,.09);
  --border-strong:rgba(255,255,255,.16);
  --gradient:linear-gradient(135deg,#3fd7ff 0%,#7c6cff 100%);
  --radius-sm:10px;
  --radius-md:16px;
  --radius-lg:24px;
  --maxw:1180px;
  --shadow-glow:0 20px 60px rgba(63,215,255,.12);
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }

body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:'Inter',sans-serif;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

h1,h2,h3,h4{
  font-family:'Sora',sans-serif;
  line-height:1.2;
  margin:0;
  font-weight:700;
}

p{ margin:0; }
img{ max-width:100%; display:block; }
ul,ol{ margin:0; padding:0; list-style:none; }
a{ color:inherit; text-decoration:none; }

.container{
  max-width:var(--maxw);
  margin:0 auto;
  padding:0 24px;
}

.section{ padding:120px 0; }
.section-alt{ background:var(--bg-soft); }

.section-head{ max-width:640px; margin-bottom:56px; }
.section-head h2{ font-size:clamp(1.9rem,3vw,2.5rem); }

.skip-link{
  position:absolute;
  left:-999px;
  top:0;
  background:var(--accent);
  color:#05070d;
  padding:10px 18px;
  border-radius:0 0 8px 0;
  font-weight:600;
  z-index:2000;
}
.skip-link:focus{ left:0; }

:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:3px;
  border-radius:4px;
}

@media (prefers-reduced-motion: reduce){
  *{ animation-duration:.001ms !important; animation-iteration-count:1 !important; transition-duration:.001ms !important; scroll-behavior:auto !important; }
}

/* =========================================================
   BUTTONS
========================================================= */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:14px 26px;
  border-radius:999px;
  font-weight:600;
  font-size:.95rem;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .25s ease, box-shadow .25s ease, background .25s ease, border-color .25s ease;
}
.btn-sm{ padding:11px 20px; font-size:.88rem; }

.btn-primary{
  background:var(--gradient);
  color:#04121a;
}
.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:0 14px 30px rgba(63,215,255,.28);
}

.btn-outline{
  border-color:var(--border-strong);
  color:var(--text);
  background:transparent;
}
.btn-outline:hover{
  border-color:var(--accent);
  color:var(--accent);
  transform:translateY(-2px);
}

.btn-ghost{
  color:var(--muted);
  padding:11px 6px;
}
.btn-ghost:hover{ color:var(--accent); }

/* =========================================================
   HEADER / NAV
========================================================= */
.site-header{
  position:sticky;
  top:0;
  z-index:1000;
  background:rgba(5,7,13,.78);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--border);
}

.header-inner{
  max-width:var(--maxw);
  margin:0 auto;
  padding:18px 24px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}

.logo{
  font-family:'Sora',sans-serif;
  font-weight:700;
  font-size:1.2rem;
  letter-spacing:.02em;
}
.logo span{ color:var(--accent); }

.main-nav ul{
  display:flex;
  gap:30px;
}

.nav-link{
  font-size:.92rem;
  color:var(--muted);
  position:relative;
  padding:4px 0;
  transition:color .25s ease;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;
  bottom:-4px;
  width:0;
  height:2px;
  background:var(--gradient);
  transition:width .25s ease;
}
.nav-link:hover{ color:var(--text); }
.nav-link.active{ color:var(--text); }
.nav-link.active::after{ width:100%; }

.header-cta{ flex-shrink:0; }

.nav-toggle{
  display:none;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  width:38px;
  height:38px;
  background:none;
  border:1px solid var(--border-strong);
  border-radius:8px;
  cursor:pointer;
}
.nav-toggle span{
  display:block;
  width:18px;
  height:2px;
  margin:0 auto;
  background:var(--text);
  transition:transform .25s ease, opacity .25s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1){ transform:translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2){ opacity:0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3){ transform:translateY(-7px) rotate(-45deg); }

.mobile-nav{
  display:none;
  flex-direction:column;
  gap:22px;
  padding:24px;
  border-top:1px solid var(--border);
  background:var(--bg);
}
.mobile-nav ul{ display:flex; flex-direction:column; gap:18px; }
.mobile-nav .nav-link{ font-size:1.05rem; }
.mobile-nav.open{ display:flex; }

/* =========================================================
   HERO
========================================================= */
.hero{
  position:relative;
  overflow:hidden;
  padding:110px 0 100px;
}

.hero-bg{ position:absolute; inset:0; z-index:0; }
.hero-grid{
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(ellipse 70% 60% at 60% 30%, black, transparent);
}
.hero-orb{
  position:absolute;
  border-radius:50%;
  filter:blur(90px);
  opacity:.35;
}
.hero-orb-a{
  width:420px; height:420px;
  background:var(--accent);
  top:-120px; right:8%;
}
.hero-orb-b{
  width:340px; height:340px;
  background:var(--accent-2);
  bottom:-140px; left:2%;
}

.hero-inner{
  position:relative;
  z-index:1;
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:60px;
  align-items:center;
}

.eyebrow{
  color:var(--accent);
  font-size:.85rem;
  font-weight:600;
  margin-bottom:18px;
  letter-spacing:.01em;
}

.hero-heading{
  font-size:clamp(2.2rem,4.4vw,3.4rem);
  max-width:14ch;
  margin-bottom:22px;
}

.hero-desc{
  color:var(--muted);
  font-size:1.08rem;
  max-width:52ch;
  margin-bottom:34px;
}

.hero-actions{
  display:flex;
  gap:16px;
  flex-wrap:wrap;
  margin-bottom:34px;
}

.hero-links{
  display:flex;
  gap:26px;
  flex-wrap:wrap;
}

.icon-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--muted);
  font-weight:500;
  font-size:.92rem;
  transition:color .25s ease;
}
.icon-link:hover{ color:var(--accent); }

.hero-visual{
  position:relative;
  justify-self:center;
}

.hero-frame{
  width:min(340px,80vw);
  aspect-ratio:4/4.6;
  border-radius:var(--radius-lg);
  padding:6px;
  background:linear-gradient(160deg, rgba(63,215,255,.5), rgba(124,108,255,.2) 60%, transparent);
  box-shadow:var(--shadow-glow);
}
.hero-frame img{
  width:100%;
  height:100%;
  object-fit:cover;
  border-radius:calc(var(--radius-lg) - 6px);
}

.hero-chip{
  position:absolute;
  display:flex;
  align-items:center;
  gap:8px;
  background:rgba(13,18,32,.9);
  border:1px solid var(--border-strong);
  backdrop-filter:blur(10px);
  padding:10px 16px;
  border-radius:999px;
  font-size:.82rem;
  font-weight:600;
  box-shadow:0 14px 30px rgba(0,0,0,.35);
}
.hero-chip .dot{
  width:8px; height:8px;
  border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 0 4px rgba(63,215,255,.18);
}
.hero-chip-top{ top:6%; left:0; }
.hero-chip-bottom{ bottom:8%; right:0; }

/* =========================================================
   ABOUT
========================================================= */
.about-grid{
  display:grid;
  grid-template-columns:1.3fr 1fr;
  gap:60px;
  align-items:start;
}

.about-copy p{
  color:var(--muted);
  margin-bottom:18px;
  max-width:62ch;
}

.bring-list{
  margin-top:28px;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:14px 20px;
}
.bring-list li{
  display:flex;
  align-items:center;
  gap:12px;
  font-size:.95rem;
  font-weight:500;
}
.bring-icon{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:34px; height:34px;
  border-radius:10px;
  background:var(--surface);
  border:1px solid var(--border);
  color:var(--accent);
  flex-shrink:0;
}

.stat-strip{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:16px;
}
.stat-card{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-md);
  padding:24px;
  transition:border-color .25s ease, transform .25s ease;
}
.stat-card:hover{ border-color:var(--border-strong); transform:translateY(-4px); }
.stat-value{
  display:block;
  font-family:'Sora',sans-serif;
  font-size:1.5rem;
  font-weight:700;
  color:var(--accent);
  margin-bottom:6px;
}
.stat-label{ color:var(--muted); font-size:.86rem; }

/* =========================================================
   SKILLS
========================================================= */
.skills-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
  gap:22px;
}
.skill-group{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-md);
  padding:28px;
  transition:border-color .25s ease, transform .25s ease;
}
.skill-group:hover{ border-color:var(--border-strong); transform:translateY(-6px); }
.skill-index{
  font-family:'Sora',sans-serif;
  color:var(--accent);
  font-size:.85rem;
  font-weight:700;
  margin-bottom:10px;
}
.skill-group h3{ font-size:1.1rem; margin-bottom:18px; }

.tag-row{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
}
.tag-row span{
  background:var(--surface-hover);
  border:1px solid var(--border);
  padding:7px 13px;
  border-radius:999px;
  font-size:.8rem;
  color:var(--muted);
}

/* =========================================================
   EXPERIENCE TIMELINE
========================================================= */
.timeline{
  position:relative;
  display:flex;
  flex-direction:column;
  gap:36px;
  padding-left:28px;
  border-left:1px solid var(--border);
}

.timeline-item{ position:relative; }
.timeline-marker{
  position:absolute;
  left:-33px;
  top:8px;
  width:10px; height:10px;
  border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 0 5px rgba(63,215,255,.14);
}

.timeline-card{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-md);
  padding:28px;
}
.timeline-top{
  display:flex;
  justify-content:space-between;
  align-items:flex-start;
  gap:16px;
  flex-wrap:wrap;
  margin-bottom:16px;
}
.timeline-card h3{ font-size:1.15rem; margin-bottom:4px; }
.timeline-org{ color:var(--muted); font-size:.88rem; }
.timeline-date{
  color:var(--accent);
  font-size:.82rem;
  font-weight:600;
  white-space:nowrap;
}
.timeline-list{ margin-bottom:20px; }
.timeline-list li{
  position:relative;
  padding-left:18px;
  color:var(--muted);
  font-size:.94rem;
  margin-bottom:8px;
}
.timeline-list li::before{
  content:"";
  position:absolute;
  left:0; top:9px;
  width:5px; height:5px;
  border-radius:50%;
  background:var(--accent);
}

.pro-work{ margin-top:52px; }
.pro-work-heading{ font-size:1.15rem; margin-bottom:6px; }
.pro-work-note{ color:var(--muted); font-size:.85rem; margin-bottom:22px; }
.pro-work-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:18px;
}
.pro-work-card{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-md);
  padding:22px;
}
.pro-work-card h4{ color:var(--accent); font-size:1rem; margin-bottom:8px; }
.pro-work-card p{ color:var(--muted); font-size:.9rem; }

/* =========================================================
   PROJECTS
========================================================= */
.featured-project{
  display:grid;
  grid-template-columns:1.05fr 1fr;
  gap:0;
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  overflow:hidden;
  margin-bottom:40px;
}

.featured-visual{
  background:linear-gradient(160deg,#0b1424,#0d1220);
  padding:40px;
  display:flex;
  flex-direction:column;
  justify-content:center;
  gap:16px;
  border-right:1px solid var(--border);
}

.mock-window{
  border-radius:14px;
  overflow:hidden;
  border:1px solid var(--border-strong);
  background:#0a0e18;
}
.mock-bar{
  display:flex;
  gap:6px;
  padding:10px 14px;
  background:#0e1424;
  border-bottom:1px solid var(--border);
}
.mock-bar span{
  width:9px; height:9px;
  border-radius:50%;
  background:rgba(255,255,255,.15);
}
.mock-body{ display:flex; gap:10px; padding:14px; }
.mock-sidebar{
  width:70px;
  display:flex;
  flex-direction:column;
  gap:10px;
}
.mock-line{
  height:8px;
  border-radius:4px;
  background:rgba(255,255,255,.08);
}
.mock-main{ flex:1; display:flex; flex-direction:column; gap:10px; }
.mock-card{
  height:36px;
  border-radius:8px;
  background:linear-gradient(120deg, rgba(63,215,255,.16), rgba(124,108,255,.1));
  border:1px solid var(--border);
}
.mock-chart{
  height:80px;
  border-radius:8px;
  background:repeating-linear-gradient(90deg, rgba(63,215,255,.22) 0 8px, transparent 8px 20px);
  border:1px solid var(--border);
}
.visual-note{ color:var(--muted); font-size:.76rem; text-align:center; }

.featured-content{ padding:44px; }
.featured-content h3{ font-size:1.8rem; margin:6px 0 16px; }
.project-desc{ color:var(--muted); margin-bottom:20px; }
.feature-list{ margin-bottom:22px; display:grid; gap:8px; }
.feature-list li{
  position:relative;
  padding-left:18px;
  color:var(--muted);
  font-size:.92rem;
}
.feature-list li::before{
  content:"";
  position:absolute;
  left:0; top:8px;
  width:5px; height:5px;
  border-radius:50%;
  background:var(--accent);
}
.featured-content .tag-row{ margin-bottom:26px; }
.project-actions{ display:flex; gap:14px; flex-wrap:wrap; }

.project-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:28px;
}

.project-card{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-md);
  overflow:hidden;
  transition:border-color .25s ease, transform .25s ease, box-shadow .25s ease;
}
.project-card:hover{
  transform:translateY(-6px);
  border-color:var(--border-strong);
  box-shadow:0 24px 50px rgba(0,0,0,.35);
}

.project-media{ display:block; overflow:hidden; }
.project-media img{
  width:100%;
  height:220px;
  object-fit:cover;
  object-position:top;
  transition:transform .5s ease;
}
.project-card:hover .project-media img{ transform:scale(1.05); }

.project-body{ padding:26px; }
.project-category{ color:var(--accent); font-size:.78rem; font-weight:600; margin-bottom:8px; }
.project-body h3{ font-size:1.2rem; margin-bottom:10px; }
.project-body .project-desc{ font-size:.92rem; margin-bottom:16px; }
.project-body .tag-row{ margin-bottom:20px; }

/* =========================================================
   CERTIFICATIONS
========================================================= */
.cert-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(280px,1fr));
  gap:22px;
}
.cert-card{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-md);
  padding:26px;
  display:flex;
  flex-direction:column;
  gap:8px;
  transition:border-color .25s ease, transform .25s ease;
}
.cert-card:hover{ border-color:var(--border-strong); transform:translateY(-5px); }
.cert-top{ display:flex; justify-content:space-between; align-items:flex-start; gap:12px; }
.cert-top h3{ font-size:1rem; line-height:1.4; }
.cert-year{ color:var(--muted); font-size:.8rem; white-space:nowrap; flex-shrink:0; }
.cert-org{ color:var(--muted); font-size:.88rem; }
.cert-link{
  color:var(--accent);
  font-size:.85rem;
  font-weight:600;
  margin-top:6px;
}
.cert-link:hover{ color:var(--text); }

/* =========================================================
   ACHIEVEMENT
========================================================= */
.achievement-card{
  display:flex;
  gap:22px;
  align-items:flex-start;
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  padding:36px;
}
.achievement-icon{
  flex-shrink:0;
  width:52px; height:52px;
  border-radius:14px;
  display:flex;
  align-items:center;
  justify-content:center;
  background:linear-gradient(160deg, rgba(63,215,255,.18), rgba(124,108,255,.12));
  border:1px solid var(--border);
  color:var(--accent);
}
.achievement-card h3{ font-size:1.15rem; margin-bottom:8px; }
.achievement-org{ color:var(--accent); font-size:.85rem; font-weight:600; margin-bottom:10px; }
.achievement-desc{ color:var(--muted); font-size:.94rem; }

/* =========================================================
   CONTACT
========================================================= */
.contact-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:60px;
  align-items:start;
}

.contact-heading{ font-size:clamp(1.9rem,3.4vw,2.6rem); margin-bottom:16px; max-width:16ch; }
.contact-sub{ color:var(--muted); max-width:46ch; margin-bottom:32px; }

.contact-details{ display:flex; flex-direction:column; gap:16px; margin-bottom:30px; }
.contact-details li{ display:flex; align-items:center; gap:14px; font-size:.98rem; }
.contact-icon{
  width:36px; height:36px;
  border-radius:10px;
  display:flex; align-items:center; justify-content:center;
  background:var(--surface);
  border:1px solid var(--border);
  color:var(--accent);
  flex-shrink:0;
}
.contact-details a:hover{ color:var(--accent); }

.contact-form{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  padding:32px;
}
.form-row{ margin-bottom:18px; display:flex; flex-direction:column; gap:8px; }
.form-row label{ font-size:.85rem; color:var(--muted); font-weight:500; }
.form-row input,
.form-row textarea{
  background:var(--bg);
  border:1px solid var(--border);
  border-radius:12px;
  padding:13px 16px;
  color:var(--text);
  font-family:'Inter',sans-serif;
  font-size:.95rem;
  resize:vertical;
  transition:border-color .25s ease, box-shadow .25s ease;
}
.form-row input:focus,
.form-row textarea:focus{
  outline:none;
  border-color:var(--accent);
  box-shadow:0 0 0 3px rgba(63,215,255,.14);
}
.form-submit{ width:100%; margin-top:4px; }
.form-note{ color:var(--muted); font-size:.78rem; margin-top:14px; text-align:center; }

/* =========================================================
   FOOTER
========================================================= */
.site-footer{
  border-top:1px solid var(--border);
  padding:44px 0 26px;
  background:var(--bg-soft);
}
.footer-inner{
  display:flex;
  justify-content:space-between;
  align-items:center;
  flex-wrap:wrap;
  gap:20px;
  margin-bottom:26px;
}
.footer-name{ font-family:'Sora',sans-serif; font-weight:700; font-size:1.05rem; }
.footer-tag{ color:var(--muted); font-size:.88rem; margin-top:4px; }
.footer-copy{
  text-align:center;
  color:var(--muted);
  font-size:.8rem;
  padding-top:22px;
  margin:0 24px;
  border-top:1px solid var(--border);
}

/* =========================================================
   SCROLL REVEAL
========================================================= */
.reveal{
  opacity:0;
  transform:translateY(18px);
  transition:opacity .6s ease, transform .6s ease;
}
.reveal.is-visible{
  opacity:1;
  transform:translateY(0);
}

/* =========================================================
   RESPONSIVE
========================================================= */
@media (max-width:1024px){
  .hero-inner{ grid-template-columns:1fr; }
  .hero-visual{ order:-1; }
  .about-grid{ grid-template-columns:1fr; }
  .stat-strip{ grid-template-columns:1fr 1fr; }
  .featured-project{ grid-template-columns:1fr; }
  .featured-visual{ border-right:none; border-bottom:1px solid var(--border); }
  .contact-grid{ grid-template-columns:1fr; }
}

@media (max-width:860px){
  .main-nav{ display:none; }
  .header-cta{ display:none; }
  .nav-toggle{ display:flex; }
  .project-grid{ grid-template-columns:1fr; }
  .pro-work-grid{ grid-template-columns:1fr; }
}

@media (max-width:640px){
  .section{ padding:80px 0; }
  .hero{ padding:70px 0 60px; }
  .hero-chip{ display:none; }
  .bring-list{ grid-template-columns:1fr; }
  .stat-strip{ grid-template-columns:1fr; }
  .timeline{ padding-left:20px; }
  .timeline-marker{ left:-25px; }
  .featured-content{ padding:28px; }
  .featured-visual{ padding:24px; }
  .achievement-card{ flex-direction:column; }
  .footer-inner{ flex-direction:column; align-items:flex-start; }
}