/* ==========================================================================
   GUHAN KALAIVANAN — PORTFOLIO
   Design system: Premium Purple Engineering / Security theme
   Palette   : void #0A0118, deep #150829, panel #1D0F35,
               primary #9333EA, primary-light #C084FC, signal #22D3EE
   Type      : Space Grotesk (display), Inter (body), JetBrains Mono (data/code)
   Signature : animated node-network background (security scan / circuit motif)
               + terminal-style "$ command" section labels
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500;700&display=swap');

:root{
  --void:#0A0118;
  --deep:#12071F;
  --panel:#1B0E2E;
  --panel-light:#241236;
  --border: rgba(192,132,252,0.16);
  --border-strong: rgba(192,132,252,0.35);

  --primary:#9333EA;
  --primary-light:#C084FC;
  --primary-dim: rgba(147,51,234,0.35);
  --signal:#22D3EE;      /* cybersecurity accent — used sparingly */
  --signal-dim: rgba(34,211,238,0.25);

  --text-hi:#F5EEFF;
  --text-mid:#C9B8E8;
  --text-low:#8D7BAE;

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

  --radius-lg:22px;
  --radius-md:14px;
  --radius-sm:8px;

  --ease:cubic-bezier(.16,.84,.44,1);
}

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

body{
  margin:0;
  background:var(--void);
  color:var(--text-mid);
  font-family:var(--font-body);
  overflow-x:hidden;
  position:relative;
}

body::before{
  /* ambient gradient wash, sits under the canvas network */
  content:"";
  position:fixed; inset:0;
  background:
    radial-gradient(ellipse 900px 600px at 12% -5%, rgba(147,51,234,0.28), transparent 60%),
    radial-gradient(ellipse 700px 500px at 90% 10%, rgba(34,211,238,0.10), transparent 60%),
    radial-gradient(ellipse 900px 700px at 50% 110%, rgba(147,51,234,0.22), transparent 60%),
    var(--void);
  z-index:-2;
}

#net-canvas{
  position:fixed; inset:0; z-index:-1; pointer-events:none; opacity:.55;
}

::selection{ background:var(--primary); color:#fff; }

::-webkit-scrollbar{ width:10px; }
::-webkit-scrollbar-track{ background:var(--void); }
::-webkit-scrollbar-thumb{ background:linear-gradient(var(--primary),var(--signal)); border-radius:20px; }

a{ color:inherit; text-decoration:none; }
h1,h2,h3,h4,h5{ font-family:var(--font-display); color:var(--text-hi); margin:0; }
p{ line-height:1.75; }

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

.container-xl{ max-width:1240px; margin:0 auto; padding:0 24px; }

/* ---------------------------------------------------------------------- */
/* Terminal-style eyebrow / section label — the signature structural device */
/* ---------------------------------------------------------------------- */
.term-label{
  display:inline-flex; align-items:center; gap:10px;
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.04em;
  color:var(--signal);
  background:rgba(34,211,238,0.06);
  border:1px solid rgba(34,211,238,0.25);
  padding:6px 14px 6px 12px;
  border-radius:999px;
  margin-bottom:18px;
}
.term-label::before{ content:"$"; color:var(--primary-light); font-weight:700; }
.term-label .cursor{
  width:7px; height:14px; background:var(--signal);
  display:inline-block; animation:blink 1.1s step-end infinite;
}
@keyframes blink{ 50%{ opacity:0; } }

.section-heading{
  font-size:clamp(28px,4vw,42px);
  font-weight:700;
  letter-spacing:-0.01em;
  margin-bottom:10px;
}
.section-heading .accent{ color:var(--primary-light); }
.section-sub{
  color:var(--text-low);
  max-width:640px;
  margin-bottom:44px;
  font-size:16px;
}

section{ position:relative; padding:100px 0; }
@media (max-width:768px){ section{ padding:64px 0; } }

/* ---------------------------------------------------------------------- */
/* NAVBAR                                                                  */
/* ---------------------------------------------------------------------- */
.gk-nav{
  position:fixed; top:0; left:0; right:0; z-index:1000;
  padding:16px 0;
  transition:all .35s var(--ease);
  border-bottom:1px solid transparent;
}
.gk-nav.scrolled{
  background:rgba(10,1,24,0.72);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid var(--border);
  padding:12px 0;
}
.gk-nav .inner{
  max-width:1240px; margin:0 auto; padding:0 24px;
  display:flex; align-items:center; justify-content:space-between;
}
.brand{
  font-family:var(--font-mono); font-weight:700; font-size:18px; color:var(--text-hi);
  display:flex; align-items:center; gap:10px;
}
.brand-logo{ width:34px; height:34px; border-radius:9px; object-fit:cover; display:block; }
.brand .dot{ width:9px; height:9px; border-radius:50%; background:var(--signal); box-shadow:0 0 10px var(--signal); }
.brand .tag{ color:var(--primary-light); }

.gk-links{ display:flex; align-items:center; gap:6px; list-style:none; margin:0; padding:0; }
.gk-links a{
  position:relative; padding:10px 16px; font-size:14.5px; font-weight:500; color:var(--text-mid);
  border-radius:8px; transition:color .25s;
}
.gk-links a::after{
  content:""; position:absolute; left:16px; right:16px; bottom:6px; height:2px;
  background:linear-gradient(90deg,var(--primary),var(--signal));
  transform:scaleX(0); transform-origin:left; transition:transform .3s var(--ease);
}
.gk-links a:hover, .gk-links a.active{ color:var(--text-hi); }
.gk-links a:hover::after, .gk-links a.active::after{ transform:scaleX(1); }

.nav-cta{
  font-family:var(--font-mono); font-size:13px; padding:9px 18px;
  border:1px solid var(--border-strong); border-radius:999px; color:var(--text-hi);
  transition:all .3s var(--ease);
}
.nav-cta:hover{ background:var(--primary); border-color:var(--primary); box-shadow:0 0 24px var(--primary-dim); color:#fff; }

.nav-toggle{ display:none; background:none; border:1px solid var(--border-strong); border-radius:8px; width:42px; height:38px; color:var(--text-hi); }
@media (max-width:991px){
  .gk-links{ display:none; }
  .nav-toggle{ display:flex; align-items:center; justify-content:center; }
  .gk-links.mobile-open{
    display:flex; flex-direction:column; position:absolute; top:60px; left:16px; right:16px;
    background:rgba(18,7,31,0.97); border:1px solid var(--border); border-radius:16px; padding:10px; gap:2px;
    backdrop-filter:blur(20px);
  }
  .gk-links.mobile-open a{ padding:14px 16px; }
}

/* ---------------------------------------------------------------------- */
/* BUTTONS                                                                 */
/* ---------------------------------------------------------------------- */
.btn-glow{
  display:inline-flex; align-items:center; gap:10px;
  font-family:var(--font-mono); font-weight:500; font-size:14.5px;
  padding:14px 28px; border-radius:12px; border:1px solid transparent;
  background:linear-gradient(135deg,var(--primary),#7c22ce);
  color:#fff; position:relative; overflow:hidden;
  transition:transform .3s var(--ease), box-shadow .3s var(--ease);
  box-shadow:0 0 0 rgba(147,51,234,0);
}
.btn-glow:hover{ transform:translateY(-3px); box-shadow:0 14px 40px -8px var(--primary-dim), 0 0 24px var(--primary-dim); color:#fff; }
.btn-glow:active{ transform:translateY(-1px); }

.btn-ghost{
  display:inline-flex; align-items:center; gap:10px;
  font-family:var(--font-mono); font-weight:500; font-size:14.5px;
  padding:13px 27px; border-radius:12px; border:1px solid var(--border-strong);
  color:var(--text-hi); background:rgba(255,255,255,0.02);
  transition:all .3s var(--ease);
}
.btn-ghost:hover{ border-color:var(--signal); color:var(--signal); box-shadow:0 0 22px var(--signal-dim); background:rgba(34,211,238,0.05); }

.btn-sm{ padding:9px 18px; font-size:13px; border-radius:9px; }

/* ---------------------------------------------------------------------- */
/* GLASS CARD                                                              */
/* ---------------------------------------------------------------------- */
.glass{
  background:linear-gradient(160deg, rgba(255,255,255,0.045), rgba(255,255,255,0.015));
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  position:relative;
}
.glass-hover{ transition:transform .4s var(--ease), border-color .4s var(--ease), box-shadow .4s var(--ease); }
.glass-hover:hover{
  transform:translateY(-6px);
  border-color:var(--border-strong);
  box-shadow:0 20px 60px -20px rgba(147,51,234,0.45);
}

/* scroll reveal */
.reveal{ opacity:0; transform:translateY(28px); transition:opacity .8s var(--ease), transform .8s var(--ease); }
.reveal.in{ opacity:1; transform:translateY(0); }
.reveal-delay-1{ transition-delay:.1s; }
.reveal-delay-2{ transition-delay:.2s; }
.reveal-delay-3{ transition-delay:.3s; }
.reveal-delay-4{ transition-delay:.4s; }

/* ---------------------------------------------------------------------- */
/* PAGE LOADER                                                             */
/* ---------------------------------------------------------------------- */
#loader{
  position:fixed; inset:0; z-index:9999; background:var(--void);
  display:flex; flex-direction:column; align-items:center; justify-content:center; gap:18px;
  transition:opacity .6s var(--ease), visibility .6s var(--ease);
}
#loader.hide{ opacity:0; visibility:hidden; }
.loader-ring{
  width:64px; height:64px; border-radius:50%;
  border:2px solid rgba(147,51,234,0.18);
  border-top-color:var(--primary); border-right-color:var(--signal);
  animation:spin 1s linear infinite;
}
@keyframes spin{ to{ transform:rotate(360deg); } }
.loader-text{ font-family:var(--font-mono); font-size:13px; color:var(--text-low); letter-spacing:.08em; }
.loader-text span{ color:var(--signal); }

/* ---------------------------------------------------------------------- */
/* HERO                                                                    */
/* ---------------------------------------------------------------------- */
.hero{ min-height:100vh; display:flex; align-items:center; padding-top:120px; }
.hero-grid{ display:grid; grid-template-columns:1.15fr .85fr; gap:56px; align-items:center; }
@media (max-width:991px){ .hero-grid{ grid-template-columns:1fr; text-align:center; } }

.hero-eyebrow{ font-family:var(--font-mono); font-size:14px; color:var(--signal); margin-bottom:18px; display:flex; align-items:center; gap:10px; }
@media (max-width:991px){ .hero-eyebrow{ justify-content:center; } }
.hero-eyebrow .line{ width:34px; height:1px; background:var(--signal); }

.hero-name{
  font-size:clamp(42px,6.2vw,76px); line-height:1.02; font-weight:700; letter-spacing:-0.02em;
  background:linear-gradient(135deg,#fff 20%,var(--primary-light) 65%,var(--signal) 100%);
  -webkit-background-clip:text; background-clip:text; color:transparent;
}
.hero-role{
  font-family:var(--font-mono); font-size:clamp(16px,2vw,21px); color:var(--text-mid);
  margin-top:18px; min-height:32px;
}
.hero-role .brackets{ color:var(--primary-light); }
.hero-role #typed{ color:var(--text-hi); }
.hero-role .caret{ display:inline-block; width:2px; height:1em; background:var(--signal); vertical-align:-2px; margin-left:2px; animation:blink 1s step-end infinite; }

.hero-desc{ margin:26px 0 34px; max-width:520px; font-size:16px; color:var(--text-low); }
@media (max-width:991px){ .hero-desc{ margin-left:auto; margin-right:auto; } }
.hero-actions{ display:flex; gap:16px; flex-wrap:wrap; }
@media (max-width:991px){ .hero-actions{ justify-content:center; } }

.hero-stats{ display:flex; gap:34px; margin-top:52px; flex-wrap:wrap; }
@media (max-width:991px){ .hero-stats{ justify-content:center; } }
.hero-stats .stat b{ font-family:var(--font-mono); font-size:26px; color:var(--text-hi); display:block; }
.hero-stats .stat span{ font-size:12.5px; color:var(--text-low); text-transform:uppercase; letter-spacing:.06em; }

/* Portrait badge (no photo provided — engineered monogram badge) */
.portrait-wrap{ display:flex; justify-content:center; align-items:center; position:relative; }
.portrait-orbit{
  width:min(360px,80vw); aspect-ratio:1; border-radius:50%; position:relative;
  display:flex; align-items:center; justify-content:center;
  animation:float 6s ease-in-out infinite;
}
@keyframes float{ 0%,100%{ transform:translateY(0);} 50%{ transform:translateY(-18px);} }
.portrait-ring{
  position:absolute; inset:0; border-radius:50%;
  border:1px dashed var(--border-strong);
  animation:spin 26s linear infinite;
}
.portrait-ring.r2{ inset:22px; border-style:solid; border-color:rgba(34,211,238,0.25); animation-duration:34s; animation-direction:reverse; }
.portrait-core{
  width:72%; aspect-ratio:1; border-radius:50%;
  background:linear-gradient(160deg,var(--panel-light),var(--panel));
  border:1px solid var(--border-strong);
  display:flex; align-items:center; justify-content:center;
  box-shadow:0 0 70px -10px var(--primary-dim), inset 0 0 40px rgba(147,51,234,0.15);
  position:relative; z-index:2;
}
.portrait-core span{
  font-family:var(--font-display); font-weight:700; font-size:clamp(48px,8vw,72px);
  background:linear-gradient(135deg,var(--primary-light),var(--signal));
  -webkit-background-clip:text; background-clip:text; color:transparent;
}
.orbit-node{
  position:absolute; width:12px; height:12px; border-radius:50%; background:var(--signal);
  box-shadow:0 0 14px var(--signal); z-index:3;
}
.orbit-node.n1{ top:6%; left:50%; }
.orbit-node.n2{ top:50%; right:2%; background:var(--primary-light); box-shadow:0 0 14px var(--primary-light); }
.orbit-node.n3{ bottom:8%; left:14%; }

/* ---------------------------------------------------------------------- */
/* CARDS — generic content card                                           */
/* ---------------------------------------------------------------------- */
.chip{
  font-family:var(--font-mono); font-size:11.5px; padding:5px 11px; border-radius:999px;
  border:1px solid var(--border-strong); color:var(--text-mid); background:rgba(255,255,255,0.03);
}
.chip.signal{ color:var(--signal); border-color:rgba(34,211,238,0.35); background:rgba(34,211,238,0.06); }
.chip.primary{ color:var(--primary-light); border-color:rgba(192,132,252,0.4); background:rgba(147,51,234,0.08); }

/* Stat / counter cards (home) */
.stat-card{ padding:30px 26px; text-align:center; }
.stat-card b{ font-family:var(--font-mono); font-size:38px; color:var(--text-hi); display:block; }
.stat-card b .plus{ color:var(--signal); }
.stat-card span{ font-size:13px; color:var(--text-low); }

/* ---------------------------------------------------------------------- */
/* FOOTER                                                                  */
/* ---------------------------------------------------------------------- */
footer.gk-footer{
  border-top:1px solid var(--border); padding:60px 0 26px; position:relative; margin-top:60px;
}
.footer-grid{ display:grid; grid-template-columns:1.4fr 1fr 1fr; gap:40px; margin-bottom:40px; }
@media (max-width:768px){ .footer-grid{ grid-template-columns:1fr; } }
.footer-grid h5{ font-family:var(--font-mono); font-size:13px; color:var(--signal); letter-spacing:.06em; margin-bottom:16px; }
.footer-links{ list-style:none; padding:0; margin:0; display:flex; flex-direction:column; gap:10px; }
.footer-links a{ color:var(--text-low); font-size:14.5px; transition:color .25s; }
.footer-links a:hover{ color:var(--primary-light); }
.footer-bottom{
  display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:14px;
  border-top:1px solid var(--border); padding-top:24px; font-size:13px; color:var(--text-low); font-family:var(--font-mono);
}
.social-row{ display:flex; gap:10px; }
.social-row a{
  width:38px; height:38px; border-radius:10px; border:1px solid var(--border-strong);
  display:flex; align-items:center; justify-content:center; color:var(--text-mid);
  transition:all .3s var(--ease);
}
.social-row a:hover{ color:#fff; background:var(--primary); border-color:var(--primary); box-shadow:0 0 18px var(--primary-dim); }

/* ---------------------------------------------------------------------- */
/* PAGE HERO (inner pages)                                                 */
/* ---------------------------------------------------------------------- */
.page-hero{ padding:150px 0 60px; text-align:center; }
.page-hero .term-label{ margin-left:auto; margin-right:auto; }
.page-hero h1{ font-size:clamp(34px,5vw,54px); }
.page-hero p{ max-width:560px; margin:16px auto 0; color:var(--text-low); }
.breadcrumb-min{ font-family:var(--font-mono); font-size:12.5px; color:var(--text-low); margin-top:14px; }
.breadcrumb-min a{ color:var(--primary-light); }

/* ---------------------------------------------------------------------- */
/* TIMELINE (education / about)                                           */
/* ---------------------------------------------------------------------- */
.timeline{ position:relative; padding-left:40px; }
.timeline::before{
  content:""; position:absolute; left:9px; top:6px; bottom:6px; width:2px;
  background:linear-gradient(var(--primary),var(--signal));
  opacity:.4;
}
.timeline-item{ position:relative; padding-bottom:44px; }
.timeline-item:last-child{ padding-bottom:0; }
.timeline-dot{
  position:absolute; left:-40px; top:4px; width:20px; height:20px; border-radius:50%;
  background:var(--void); border:2px solid var(--signal); box-shadow:0 0 16px var(--signal-dim);
  display:flex; align-items:center; justify-content:center;
}
.timeline-dot::after{ content:""; width:7px; height:7px; border-radius:50%; background:var(--signal); }
.timeline-card{ padding:24px 26px; }
.timeline-card .when{ font-family:var(--font-mono); font-size:12.5px; color:var(--signal); margin-bottom:6px; display:block; }
.timeline-card h4{ font-size:19px; margin-bottom:8px; }
.timeline-card p{ font-size:14.5px; margin:0; }

.timeline-photos{ display:grid; grid-template-columns:1fr 1fr; gap:10px; margin-top:14px; }
.timeline-photos img{ width:100%; height:110px; object-fit:cover; border-radius:10px; border:1px solid var(--border); cursor:zoom-in; transition:transform .3s var(--ease); }
.timeline-photos img:hover{ transform:scale(1.03); }

.edu-gallery{ display:grid; grid-template-columns:1fr 1fr; gap:12px; }
.edu-gallery img{ width:100%; height:150px; object-fit:cover; border-radius:12px; border:1px solid var(--border); cursor:zoom-in; transition:transform .3s var(--ease); }
.edu-gallery img:hover{ transform:scale(1.03); }

/* ---------------------------------------------------------------------- */
/* SKILLS                                                                  */
/* ---------------------------------------------------------------------- */
.skills-grid{
  display:grid; grid-template-columns:repeat(4,1fr); gap:22px;
}
@media (max-width:900px){ .skills-grid{ grid-template-columns:repeat(3,1fr); } }
@media (max-width:600px){ .skills-grid{ grid-template-columns:repeat(2,1fr); } }

.skill-card{
  padding:34px 20px 26px; text-align:center; cursor:default;
}
.skill-card .icon-wrap{
  width:76px; height:76px; margin:0 auto 18px; border-radius:20px;
  background:rgba(255,255,255,0.03); border:1px solid var(--border);
  display:flex; align-items:center; justify-content:center;
  transition:all .4s var(--ease);
}
.skill-card:hover .icon-wrap{
  transform:translateY(-6px) rotate(-4deg);
  border-color:var(--primary-light); box-shadow:0 0 30px var(--primary-dim);
}
.skill-card .icon-wrap img{ width:42px; height:42px; object-fit:contain; }
.skill-card .icon-wrap svg{ width:40px; height:40px; }
.skill-card h5{ font-size:15.5px; margin-bottom:6px; }
.skill-card .lvl{ font-family:var(--font-mono); font-size:11px; color:var(--text-low); }
.skill-bar{ height:4px; border-radius:99px; background:rgba(255,255,255,0.06); margin-top:10px; overflow:hidden; }
.skill-bar i{ display:block; height:100%; background:linear-gradient(90deg,var(--primary),var(--signal)); border-radius:99px; width:0%; transition:width 1.2s var(--ease); }

/* ---------------------------------------------------------------------- */
/* PROJECTS                                                                */
/* ---------------------------------------------------------------------- */
.featured-card{
  display:grid; grid-template-columns:1.05fr .95fr; overflow:hidden; position:relative;
}
@media (max-width:900px){ .featured-card{ grid-template-columns:1fr; } }
.featured-card .badge-featured{
  position:absolute; top:22px; left:22px; z-index:2;
  font-family:var(--font-mono); font-size:12px; padding:7px 14px; border-radius:999px;
  background:linear-gradient(135deg,var(--primary),var(--signal)); color:#0A0118; font-weight:700;
  box-shadow:0 0 26px var(--primary-dim);
}
.featured-media{ position:relative; min-height:340px; background:var(--panel); overflow:hidden; }
.featured-media img{ width:100%; height:100%; object-fit:cover; object-position:top; display:block; transition:transform .6s var(--ease); }
.featured-card:hover .featured-media img{ transform:scale(1.04); }
.featured-body{ padding:40px; display:flex; flex-direction:column; }
.featured-body h3{ font-size:28px; margin:14px 0 12px; }
.featured-body p{ font-size:15px; }
.chip-row{ display:flex; flex-wrap:wrap; gap:8px; margin:16px 0 22px; }
.featured-actions{ display:flex; gap:14px; margin-top:auto; flex-wrap:wrap; }

.project-grid{ display:grid; grid-template-columns:repeat(2,1fr); gap:28px; }
@media (max-width:768px){ .project-grid{ grid-template-columns:1fr; } }
.project-card{ overflow:hidden; display:flex; flex-direction:column; }
.project-card .media{ height:200px; overflow:hidden; position:relative; background:var(--panel); }
.project-card .media img{ width:100%; height:100%; object-fit:cover; object-position:top; transition:transform .5s var(--ease); }
.project-card:hover .media img{ transform:scale(1.08); }
.project-card .media.code-media{
  display:flex; align-items:center; justify-content:center; flex-direction:column; gap:6px;
  font-family:var(--font-mono); color:var(--text-low); font-size:12px;
  background:
    repeating-linear-gradient(transparent, transparent 27px, rgba(255,255,255,0.025) 28px),
    var(--panel);
}
.project-card .media.code-media .file-tag{ color:var(--signal); font-size:20px; }
.project-card .body{ padding:24px; display:flex; flex-direction:column; flex:1; }
.project-card h4{ font-size:18.5px; margin:10px 0 8px; }
.project-card p{ font-size:14px; margin:0 0 16px; flex:1; }
.project-card .chip-row{ margin-bottom:16px; }

/* ---------------------------------------------------------------------- */
/* CERTIFICATES                                                            */
/* ---------------------------------------------------------------------- */
.cert-grid{ display:grid; grid-template-columns:repeat(2,1fr); gap:30px; }
@media (max-width:768px){ .cert-grid{ grid-template-columns:1fr; } }
.cert-card{ overflow:hidden; }
.cert-media{ position:relative; overflow:hidden; aspect-ratio:1.35; background:var(--panel); }
.cert-media img{ width:100%; height:100%; object-fit:cover; object-position:top; transition:transform .5s var(--ease); }
.cert-card:hover .cert-media img{ transform:scale(1.06); }
.cert-media::after{
  content:""; position:absolute; inset:0;
  background:linear-gradient(0deg, rgba(10,1,24,0.85), transparent 45%);
}
.cert-body{ padding:26px; }
.cert-body h4{ font-size:19px; margin:8px 0 6px; }
.cert-meta{ display:flex; gap:16px; flex-wrap:wrap; font-family:var(--font-mono); font-size:12px; color:var(--text-low); margin-bottom:14px; }
.cert-meta b{ color:var(--signal); font-weight:500; }

/* lightbox */
.lightbox{
  position:fixed; inset:0; z-index:2000; background:rgba(6,1,14,0.92); backdrop-filter:blur(6px);
  display:none; align-items:center; justify-content:center; padding:40px;
}
.lightbox.open{ display:flex; }
.lightbox img{ max-width:min(880px,92vw); max-height:88vh; border-radius:14px; border:1px solid var(--border-strong); box-shadow:0 30px 90px rgba(0,0,0,0.6); }
.lightbox-close{
  position:absolute; top:26px; right:30px; width:44px; height:44px; border-radius:50%;
  background:rgba(255,255,255,0.06); border:1px solid var(--border-strong); color:#fff;
  display:flex; align-items:center; justify-content:center; font-size:20px; cursor:pointer;
}

/* ---------------------------------------------------------------------- */
/* FORMS (contact)                                                        */
/* ---------------------------------------------------------------------- */
.form-field{ margin-bottom:22px; }
.form-field label{ display:block; font-family:var(--font-mono); font-size:12.5px; color:var(--text-mid); margin-bottom:8px; letter-spacing:.03em; }
.form-field input, .form-field textarea, .form-field select{
  width:100%; padding:14px 16px; border-radius:10px; border:1px solid var(--border-strong);
  background:rgba(255,255,255,0.03); color:var(--text-hi); font-family:var(--font-body); font-size:14.5px;
  transition:all .3s;
}
.form-field textarea{ resize:vertical; min-height:130px; }
.form-field input:focus, .form-field textarea:focus, .form-field select:focus{
  outline:none; border-color:var(--signal); box-shadow:0 0 0 4px var(--signal-dim);
}
.contact-info-item{ display:flex; gap:16px; align-items:flex-start; padding:20px 0; border-bottom:1px solid var(--border); }
.contact-info-item:last-child{ border-bottom:none; }
.contact-info-item .ic{
  width:44px; height:44px; border-radius:12px; background:rgba(147,51,234,0.12); border:1px solid var(--border-strong);
  display:flex; align-items:center; justify-content:center; flex-shrink:0; color:var(--primary-light);
}
.contact-info-item h6{ font-size:14.5px; color:var(--text-hi); margin-bottom:4px; font-family:var(--font-mono); }
.contact-info-item span{ font-size:14px; color:var(--text-low); }
.form-status{ font-family:var(--font-mono); font-size:13px; margin-top:10px; display:none; }
.form-status.ok{ color:var(--signal); display:block; }
.form-status.err{ color:#f87171; display:block; }

/* ---------------------------------------------------------------------- */
/* PROJECT DETAIL TEMPLATE                                                 */
/* ---------------------------------------------------------------------- */
.detail-hero{ padding:150px 0 40px; }
.detail-media{ border-radius:var(--radius-lg); overflow:hidden; border:1px solid var(--border); margin:34px 0 60px; }
.detail-media img{ width:100%; display:block; }
.detail-section{ margin-bottom:56px; }
.detail-section h3{ font-size:24px; margin-bottom:16px; display:flex; align-items:center; gap:12px; }
.detail-section h3 .num{ font-family:var(--font-mono); font-size:14px; color:var(--signal); border:1px solid var(--signal-dim); width:32px; height:32px; border-radius:9px; display:flex; align-items:center; justify-content:center; }
.feature-list{ list-style:none; padding:0; margin:0; display:grid; grid-template-columns:1fr 1fr; gap:14px; }
@media (max-width:700px){ .feature-list{ grid-template-columns:1fr; } }
.feature-list li{ display:flex; gap:10px; font-size:14.5px; color:var(--text-mid); }
.feature-list li::before{ content:"▹"; color:var(--signal); flex-shrink:0; }
.code-block{
  background:var(--panel); border:1px solid var(--border); border-radius:var(--radius-md);
  padding:20px 22px; font-family:var(--font-mono); font-size:12.8px; color:var(--text-mid);
  overflow-x:auto; white-space:pre; line-height:1.7;
}
.code-block .kw{ color:var(--primary-light); }
.code-block .str{ color:var(--signal); }
.code-block .com{ color:var(--text-low); font-style:italic; }
.detail-gallery{ display:grid; grid-template-columns:repeat(2,1fr); gap:20px; }
@media (max-width:700px){ .detail-gallery{ grid-template-columns:1fr; } }
.detail-gallery img{ width:100%; border-radius:var(--radius-md); border:1px solid var(--border); cursor:zoom-in; }
.detail-sidebar{ position:sticky; top:110px; }
.spec-row{ display:flex; justify-content:space-between; padding:12px 0; border-bottom:1px solid var(--border); font-size:13.5px; }
.spec-row span:first-child{ color:var(--text-low); font-family:var(--font-mono); font-size:12px; }
.spec-row span:last-child{ color:var(--text-hi); text-align:right; }

/* ---------------------------------------------------------------------- */
/* FLOATING AI ASSISTANT                                                   */
/* ---------------------------------------------------------------------- */
#ai-fab{
  position:fixed; bottom:26px; right:26px; z-index:1500;
  width:60px; height:60px; border-radius:50%;
  background:linear-gradient(135deg,var(--primary),var(--signal));
  display:flex; align-items:center; justify-content:center; cursor:pointer;
  box-shadow:0 10px 40px -8px var(--primary-dim), 0 0 0 rgba(34,211,238,0.4);
  animation:pulse-fab 2.6s ease-in-out infinite;
  border:none;
}
@keyframes pulse-fab{
  0%,100%{ box-shadow:0 10px 40px -8px var(--primary-dim), 0 0 0 0 rgba(34,211,238,0.35); }
  50%{ box-shadow:0 10px 40px -8px var(--primary-dim), 0 0 0 10px rgba(34,211,238,0); }
}
#ai-fab svg{ width:26px; height:26px; color:#fff; }
#ai-fab .fab-dot{ position:absolute; top:2px; right:2px; width:12px; height:12px; border-radius:50%; background:#22C55E; border:2px solid var(--void); }

#ai-panel{
  position:fixed; bottom:100px; right:26px; z-index:1500;
  width:370px; max-width:calc(100vw - 32px); height:600px; max-height:78vh;
  background:rgba(18,7,31,0.92); backdrop-filter:blur(24px);
  border:1px solid var(--border-strong); border-radius:20px;
  display:flex; flex-direction:column; overflow:hidden;
  transform:translateY(20px) scale(.97); opacity:0; pointer-events:none;
  transition:all .35s var(--ease);
  box-shadow:0 30px 80px -20px rgba(0,0,0,0.6);
}
#ai-panel.open{ transform:translateY(0) scale(1); opacity:1; pointer-events:all; }
.ai-head{
  padding:16px 18px; display:flex; align-items:center; gap:12px; border-bottom:1px solid var(--border);
  background:linear-gradient(135deg, rgba(147,51,234,0.15), rgba(34,211,238,0.08));
}
.ai-head .av{ width:36px; height:36px; border-radius:50%; background:linear-gradient(135deg,var(--primary),var(--signal)); display:flex; align-items:center; justify-content:center; font-family:var(--font-mono); font-weight:700; font-size:13px; color:#fff; overflow:hidden; flex-shrink:0; }
.ai-head .av img{ width:100%; height:100%; object-fit:cover; }
.ai-head .meta{ flex:1; }
.ai-head .meta b{ font-size:14px; color:var(--text-hi); display:block; }
.ai-head .meta span{ font-size:11.5px; color:var(--signal); font-family:var(--font-mono); display:flex; align-items:center; gap:5px; }
.ai-head .meta span::before{ content:""; width:6px; height:6px; border-radius:50%; background:#22C55E; }
.ai-close{ background:none; border:none; color:var(--text-low); cursor:pointer; width:30px; height:30px; }
.ai-body{ flex:1 1 auto; min-height:0; overflow-y:auto; padding:18px; display:flex; flex-direction:column; gap:14px; }
.ai-msg{ max-width:85%; font-size:13.5px; line-height:1.6; padding:11px 14px; border-radius:14px; }
.ai-msg.bot{ background:rgba(255,255,255,0.05); border:1px solid var(--border); color:var(--text-mid); align-self:flex-start; border-bottom-left-radius:4px; }
.ai-msg.user{ background:linear-gradient(135deg,var(--primary),#7c22ce); color:#fff; align-self:flex-end; border-bottom-right-radius:4px; }
.ai-typing{ display:flex; gap:4px; padding:6px 4px; align-self:flex-start; }
.ai-typing i{ width:6px; height:6px; border-radius:50%; background:var(--text-low); animation:typingdot 1.1s infinite; }
.ai-typing i:nth-child(2){ animation-delay:.15s; }
.ai-typing i:nth-child(3){ animation-delay:.3s; }
@keyframes typingdot{ 0%,60%,100%{ opacity:.3; transform:translateY(0);} 30%{ opacity:1; transform:translateY(-3px);} }
.ai-suggest{ flex-shrink:0; display:flex; flex-wrap:wrap; gap:6px; padding:0 18px 12px; max-height:70px; overflow-y:auto; transition:all .3s var(--ease); }
.ai-suggest.hidden{ display:none; }
.ai-suggest button{
  font-family:var(--font-mono); font-size:10.5px; padding:5px 10px; border-radius:999px;
  border:1px solid var(--border-strong); background:rgba(255,255,255,0.02); color:var(--text-mid); cursor:pointer;
  transition:all .25s; line-height:1.3;
}
.ai-suggest button:hover{ border-color:var(--signal); color:var(--signal); }
.ai-input-row{ display:flex; gap:8px; padding:14px; border-top:1px solid var(--border); }
.ai-input-row input{
  flex:1; background:rgba(255,255,255,0.04); border:1px solid var(--border-strong); border-radius:10px;
  padding:11px 14px; color:var(--text-hi); font-size:13.5px; font-family:var(--font-body);
}
.ai-input-row input:focus{ outline:none; border-color:var(--signal); }
.ai-input-row button{
  width:42px; height:42px; border-radius:10px; border:none; flex-shrink:0;
  background:linear-gradient(135deg,var(--primary),var(--signal)); color:#fff; display:flex; align-items:center; justify-content:center; cursor:pointer;
}

@media (max-width:520px){
  #ai-panel{ right:16px; left:16px; width:auto; bottom:92px; }
  #ai-fab{ right:16px; bottom:18px; }
}