/* ============================================================
   Eshita Kundu — portfolio
   Warm, bold, sticker/clipboard aesthetic. Hard-edged shadows,
   thick ink borders, paper-cream backgrounds. Built to read clean
   for recruiters but feel handmade, not templated.
   ============================================================ */

/* ---- TOKENS ---- */
:root{
  --font-sans: 'Space Grotesk', ui-sans-serif, system-ui, -apple-system, sans-serif;
  --font-display: 'Fraunces', Georgia, serif;
  --font-hand: 'Caveat', cursive;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Consolas, monospace;

  --maxw: 1140px;
  --radius: 14px;
  --radius-sm: 10px;

  --ease: cubic-bezier(.22,.61,.36,1);
  --ease-spring: cubic-bezier(.34,1.56,.64,1);
  --ink-border: 1.5px;
  --shadow-sm: 0 2px 10px rgba(20,18,10,.08);
  --shadow-md: 0 8px 20px rgba(20,18,10,.12);
  --shadow-lg: 0 16px 36px rgba(20,18,10,.16);
  --shadow-glow: 0 0 0 1px color-mix(in srgb, var(--accent) 30%, transparent), 0 0 32px color-mix(in srgb, var(--accent) 20%, transparent);

  /* Fixed (non-theme-swapping) tokens */
  --surface-dark: #1b1e2a;
  --accent-fill: #3d48a8;
  --chip-ink: #1b1d22;
}

/* Light theme -- warm paper / indigo / muted coral & gold */
[data-theme="light"]{
  --bg: #f8f3e8;
  --bg-elev: #fffdf8;
  --bg-alt: #efe6d2;
  --ink: #211d18;
  --ink-soft: #5a5448;
  --ink-faint: #766f59;
  --line: #e3dac4;
  --line-strong: #2b271f;
  --accent: #4a52b8;
  --accent-soft: #ebebfa;
  --accent-ink: #3a41a0;
  --accent-2: #e2724f;
  --accent-3: #e3b75f;
  --chip: #f1e9d8;
  --blob-1: rgba(227,183,95,.30);
  --blob-2: rgba(74,82,184,.16);
  --blob-3: rgba(226,114,79,.12);
  --cursor-color: #4a52b8;
}

/* Dark theme */
[data-theme="dark"]{
  --bg: #14151c;
  --bg-elev: #1c1e27;
  --bg-alt: #181a22;
  --ink: #ece9e1;
  --ink-soft: #b7b3a8;
  --ink-faint: #88857c;
  --line: #303340;
  --line-strong: #ece9e1;
  --accent: #8a8ff0;
  --accent-soft: #23273e;
  --accent-ink: #a8acf5;
  --accent-2: #e69a78;
  --accent-3: #d9ad63;
  --chip: #242631;
  --blob-1: rgba(217,173,99,.18);
  --blob-2: rgba(138,143,240,.18);
  --blob-3: rgba(138,143,240,.10);
  --cursor-color: #8a8ff0;
}

*{ box-sizing:border-box; margin:0; padding:0; }
html{ scroll-behavior:smooth; scroll-padding-top:90px; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *{ animation:none !important; transition:none !important; }
  .cursor, .cursor-ring { display:none !important; }
}

body{
  font-family:var(--font-sans);
  background:var(--bg);
  color:var(--ink);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  transition:background .4s var(--ease), color .4s var(--ease);
  overflow-x:hidden;
  cursor:none;
}
@media (pointer: coarse){ body{ cursor:auto; } .cursor,.cursor-ring{ display:none; } }
a{ color:inherit; text-decoration:none; }
img{ max-width:100%; display:block; }
.container{ width:100%; max-width:var(--maxw); margin:0 auto; padding:0 24px; }

/* ---- CUSTOM CURSOR ---- */
.cursor{
  position:fixed; width:8px; height:8px; border-radius:50%;
  background:var(--cursor-color); z-index:9999; pointer-events:none;
  transform:translate(-50%,-50%); transition:width .2s, height .2s, opacity .2s;
  mix-blend-mode:multiply;
  will-change:transform;
}
[data-theme="dark"] .cursor{ mix-blend-mode:screen; }
.cursor-ring{
  position:fixed; width:36px; height:36px; border-radius:50%;
  border:1.5px solid var(--cursor-color); z-index:9998; pointer-events:none;
  transform:translate(-50%,-50%); opacity:.5;
  transition:width .3s var(--ease), height .3s var(--ease), opacity .3s, border-color .3s;
  will-change:transform;
}
body:has(a:hover) .cursor, body:has(button:hover) .cursor{ width:14px; height:14px; }
body:has(a:hover) .cursor-ring, body:has(button:hover) .cursor-ring{ width:52px; height:52px; opacity:.3; }

/* ---- SCROLL PROGRESS ---- */
.scroll-progress{
  position:fixed; top:0; left:0; height:3px; width:0;
  background:linear-gradient(90deg, var(--accent), var(--accent-2));
  z-index:200; transition:width .1s linear;
}

/* ---- NAV ---- */
.nav{
  position:fixed; top:0; left:0; right:0; z-index:100;
  transition:background .3s var(--ease), border-color .3s var(--ease), backdrop-filter .3s;
  border-bottom:var(--ink-border) solid transparent;
}
.nav.scrolled{
  background:color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter:saturate(160%) blur(10px);
  -webkit-backdrop-filter:saturate(160%) blur(10px);
  border-bottom:var(--ink-border) solid var(--line-strong);
}
.nav-inner{
  max-width:var(--maxw); margin:0 auto; padding:14px 24px;
  display:flex; align-items:center; justify-content:space-between; gap:20px;
}
.nav-logo{ font-weight:700; font-size:1.08rem; letter-spacing:-.01em; }
.nav-logo .dot{ color:var(--accent-2); }
.nav-links{ display:flex; gap:6px; }
.nav-links a{
  font-size:.92rem; color:var(--ink-soft); padding:8px 12px; border-radius:999px;
  font-weight:600; transition:color .2s, background .2s; position:relative;
}
.nav-links a:hover{ color:var(--ink); background:var(--chip); }
.nav-links a.active{ color:var(--accent-ink); background:var(--accent-soft); }
.nav-actions{ display:flex; align-items:center; gap:10px; }

.theme-toggle{
  display:grid; place-items:center; width:38px; height:38px; border-radius:50%;
  border:var(--ink-border) solid var(--line-strong); background:var(--bg-elev); color:var(--ink);
  cursor:pointer; transition:.2s var(--ease);
}
.theme-toggle:hover{ transform:translate(-1px,-1px); box-shadow:var(--shadow-sm); }
[data-theme="light"] .i-moon{ display:none; }
[data-theme="dark"] .i-sun{ display:none; }

.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  font-family:var(--font-sans); font-weight:700; font-size:.92rem;
  padding:11px 22px; border-radius:999px; cursor:pointer;
  border:var(--ink-border) solid var(--line-strong);
  transition:transform .4s var(--ease-spring), box-shadow .18s var(--ease), background .2s;
  white-space:nowrap;
}
.btn-primary{ background:var(--accent-3); color:var(--chip-ink); box-shadow:var(--shadow-sm); }
.btn-primary:hover{ transform:translate(-2px,-2px); box-shadow:var(--shadow-md); }
.btn-ghost{ background:var(--bg-elev); color:var(--ink); }
.btn-ghost:hover{ transform:translate(-2px,-2px); box-shadow:var(--shadow-sm); }
.nav-resume{ padding:9px 18px; }

.nav-burger{ display:none; flex-direction:column; gap:5px; width:40px; height:40px; align-items:center; justify-content:center; background:var(--bg-elev); border:var(--ink-border) solid var(--line-strong); border-radius:10px; cursor:pointer; }
.nav-burger span{ width:18px; height:2px; background:var(--ink); border-radius:2px; transition:.3s var(--ease); }
.nav-burger.open span:nth-child(1){ transform:translateY(7px) rotate(45deg); }
.nav-burger.open span:nth-child(2){ opacity:0; }
.nav-burger.open span:nth-child(3){ transform:translateY(-7px) rotate(-45deg); }

/* ---- HERO ---- */
.hero{ position:relative; padding:170px 0 70px; overflow:hidden; }
.hero-bg{ position:absolute; inset:0; z-index:0; pointer-events:none; }
.hero-particles{ position:absolute; inset:0; width:100%; height:100%; opacity:.6; }
.hero-noise{
  position:absolute; inset:0;
  background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='1'/%3E%3C/svg%3E");
  opacity:.028; mix-blend-mode:multiply; pointer-events:none;
}
[data-theme="dark"] .hero-noise{ opacity:.04; mix-blend-mode:overlay; }
.blob{
  position:absolute; border-radius:50%; filter:blur(60px);
  will-change:transform; animation:blobFloat 12s ease-in-out infinite;
}
.blob-1{ top:-14%; left:-10%; width:550px; height:550px; background:var(--blob-1); animation-delay:0s; }
.blob-2{ top:2%; right:-14%; width:480px; height:480px; background:var(--blob-2); animation-delay:-4s; }
.blob-3{ bottom:-10%; left:30%; width:380px; height:380px; background:var(--blob-3); animation-delay:-8s; display:block; }
@keyframes blobFloat{
  0%,100%{ transform:translate(0,0) scale(1); }
  33%{ transform:translate(18px,-24px) scale(1.05); }
  66%{ transform:translate(-14px,16px) scale(.97); }
}
.grid-fade{
  position:absolute; inset:0;
  background-image:linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size:54px 54px; opacity:.55;
  mask-image:radial-gradient(130% 90% at 50% 0%, #000 20%, transparent 70%);
  -webkit-mask-image:radial-gradient(130% 90% at 50% 0%, #000 20%, transparent 70%);
}
.hero-inner{
  position:relative; z-index:1;
  display:flex; align-items:flex-start; gap:48px;
  flex-wrap:wrap;
}
.hero-text{ flex:1 1 420px; max-width:620px; }

/* ---- AGENT VIZ PANEL ---- */
.hero-viz-wrap{
  flex:0 0 380px; align-self:center;
  position:relative; border-radius:20px; overflow:hidden;
  background:color-mix(in srgb, var(--bg-elev) 70%, transparent);
  backdrop-filter:blur(12px); -webkit-backdrop-filter:blur(12px);
  border:1.5px solid color-mix(in srgb, var(--accent) 28%, var(--line-strong));
  box-shadow:0 0 0 1px color-mix(in srgb, var(--accent) 12%, transparent),
             0 0 60px color-mix(in srgb, var(--accent) 12%, transparent),
             var(--shadow-md);
  padding:4px 4px 0;
}
.hero-viz-wrap::before{
  content:""; position:absolute; inset:-1px; border-radius:21px; z-index:0; pointer-events:none;
  background:conic-gradient(from var(--angle,0deg), transparent 60%, color-mix(in srgb,var(--accent) 60%, transparent) 72%, color-mix(in srgb,var(--accent-3) 50%, transparent) 82%, transparent 100%);
  animation:rotateBorder 6s linear infinite;
}
@property --angle { syntax:"<angle>"; initial-value:0deg; inherits:false; }
@keyframes rotateBorder{ to{ --angle:360deg; } }
.hero-viz-wrap > canvas{ position:relative; z-index:1; width:100%; display:block; border-radius:16px 16px 0 0; }
.viz-label{
  position:relative; z-index:1; text-align:center;
  font-family:var(--font-mono); font-size:.7rem; font-weight:500;
  letter-spacing:.08em; text-transform:uppercase;
  color:color-mix(in srgb, var(--accent-ink) 80%, transparent);
  padding:8px 0 10px;
}
@media (max-width:960px){ .hero-viz-wrap{ display:none; } }

.hero-title-v2{
  font-family:var(--font-display); font-weight:600;
  font-size:clamp(3rem, 7.6vw, 5.4rem); line-height:1.0; letter-spacing:-.025em;
  margin-bottom:18px; color:var(--ink);
}
.hero-title-v2 .accent{
  position:relative; display:inline-block;
  background:linear-gradient(100deg, var(--accent) 0%, var(--accent-ink) 35%, var(--accent-2) 65%, var(--accent) 100%);
  background-size:250% auto;
  -webkit-background-clip:text; background-clip:text; color:transparent;
  animation:accentShift 7s ease-in-out infinite;
}
@media (prefers-reduced-motion: reduce){ .hero-title-v2 .accent{ animation:none; } }
@keyframes accentShift{ 0%{ background-position:0% 50%; } 50%{ background-position:100% 50%; } 100%{ background-position:0% 50%; } }
.hero-title-v2 .accent::after{
  content:""; position:absolute; left:-3%; right:-3%; bottom:.08em; height:.3em;
  background:color-mix(in srgb, var(--accent-3) 65%, transparent); z-index:-1; border-radius:4px;
}

.command-strip{
  flex:1 1 100%;
  display:flex; flex-wrap:wrap; margin-top:36px; border:var(--ink-border) solid var(--line-strong);
  border-radius:14px; overflow:hidden; background:var(--surface-dark); box-shadow:var(--shadow-sm);
  position:relative;
}
.command-strip::before{
  content:""; position:absolute; inset:-1px; border-radius:14px;
  background:linear-gradient(135deg, rgba(145,166,255,.14) 0%, transparent 50%, rgba(227,183,95,.10) 100%);
  pointer-events:none;
}
.command-pill{ flex:1 1 140px; padding:14px 18px; border-right:1.5px solid rgba(255,255,255,.15); position:relative; }
.command-pill:last-child{ border-right:none; }
.command-pill .cp-num{
  font-family:var(--font-mono);
  font-weight:700; font-size:1.3rem; color:var(--accent-3); line-height:1;
  letter-spacing:-.02em;
  text-shadow:0 0 8px color-mix(in srgb, var(--accent-3) 70%, transparent), 0 0 24px color-mix(in srgb, var(--accent-3) 35%, transparent);
}
.command-pill .cp-label{ font-size:.74rem; color:rgba(255,255,255,.72); margin-top:5px; line-height:1.3; }
.hero-eyebrow{
  display:inline-flex; align-items:center; gap:9px;
  font-size:.86rem; font-weight:600; color:var(--ink);
  background:var(--bg-elev); border:var(--ink-border) solid var(--line-strong);
  padding:7px 15px; border-radius:999px; box-shadow:var(--shadow-sm); margin-bottom:26px;
}
.status-dot{ width:8px; height:8px; border-radius:50%; background:#3aa66b; box-shadow:0 0 0 0 rgba(58,166,107,.5); animation:pulse 2.2s infinite; }
@keyframes pulse{ 0%{ box-shadow:0 0 0 0 rgba(58,166,107,.45);} 70%{ box-shadow:0 0 0 8px rgba(58,166,107,0);} 100%{ box-shadow:0 0 0 0 rgba(58,166,107,0);} }

.hero-role{ font-size:1.18rem; font-weight:700; margin-bottom:14px; color:var(--ink); }
.role-rotator{ color:var(--accent-ink); border-right:2px solid var(--accent); padding-right:3px; }
.hero-sub{ font-size:1.1rem; color:var(--ink-soft); max-width:640px; margin-bottom:34px; }
.hero-cta{ display:flex; flex-wrap:wrap; gap:12px; margin-bottom:30px; }
.hero-links{ display:flex; flex-wrap:wrap; gap:18px; }
.hero-links a{
  display:inline-flex; align-items:center; gap:8px; font-size:.92rem; font-weight:600;
  color:var(--ink-soft); transition:color .2s, transform .2s;
}
.hero-links a:hover{ color:var(--accent-ink); transform:translateY(-1px); }
.hero-links svg{ width:17px; height:17px; }

/* ---- HERO SCROLL INDICATOR ---- */
.hero-scroll{
  display:flex; flex-direction:column; align-items:center; gap:6px;
  margin-top:40px; opacity:.45; transition:opacity .2s;
  cursor:pointer;
}
.hero-scroll:hover{ opacity:.8; }
.hero-scroll span{ font-size:.72rem; font-weight:600; letter-spacing:.08em; text-transform:uppercase; color:var(--ink-soft); }
.hero-scroll-arrow{
  width:20px; height:32px; border:1.5px solid var(--ink-faint); border-radius:20px;
  position:relative; display:flex; align-items:flex-start; justify-content:center; padding-top:5px;
}
.hero-scroll-arrow::after{
  content:""; width:3px; height:7px; background:var(--accent); border-radius:2px;
  animation:scrollBounce 1.8s ease-in-out infinite;
}
@keyframes scrollBounce{
  0%,100%{ transform:translateY(0); opacity:1; }
  60%{ transform:translateY(10px); opacity:.2; }
}
@media (max-width:720px){ .hero-scroll{ display:none; } }

.ticker-wrap{
  border-top:var(--ink-border) solid var(--line-strong);
  border-bottom:var(--ink-border) solid var(--line-strong);
  background:var(--ink); overflow:hidden; padding:12px 0;
}
.ticker{ display:flex; width:max-content; animation:tickerScroll 28s linear infinite; }
@media (prefers-reduced-motion: reduce){ .ticker{ animation:none; } }
.ticker-item{
  display:flex; align-items:center; gap:10px; padding:0 28px;
  font-weight:600; font-size:.98rem; color:var(--bg); white-space:nowrap;
}
.ticker-item .sep{ color:var(--accent-3); }
@keyframes tickerScroll{ from{ transform:translateX(0); } to{ transform:translateX(-50%); } }

/* ---- SECTIONS ---- */
.section{ padding:96px 0; }
.section-alt{ background:var(--bg-alt); border-top:var(--ink-border) solid var(--line-strong); border-bottom:var(--ink-border) solid var(--line-strong); }
.section-head{ max-width:680px; margin-bottom:48px; }
.section-kicker{
  display:inline-flex; font-size:.78rem; font-weight:700; letter-spacing:.06em; text-transform:uppercase;
  color:var(--chip-ink); background:var(--accent-3); padding:5px 12px; border-radius:8px;
}
.section-title{ font-family:var(--font-display); font-weight:600; font-size:clamp(1.9rem,4vw,2.7rem); letter-spacing:-.02em; margin:14px 0 14px; line-height:1.1; color:var(--ink); }
.section-lead{ color:var(--ink-soft); font-size:1.05rem; }

/* ---- FLAGSHIP BADGE (reused on network-hub) ---- */
.flagship-badge{
  display:inline-flex; align-items:center; gap:7px; font-size:.78rem; font-weight:700;
  text-transform:uppercase; letter-spacing:.05em; color:var(--chip-ink);
  background:var(--accent-3);
  border:var(--ink-border) solid var(--line-strong);
  padding:6px 13px; border-radius:999px; margin-bottom:18px;
}

.tags{ display:flex; flex-wrap:wrap; gap:8px; margin-bottom:22px; }
.tag{ font-size:.78rem; font-weight:600; color:var(--ink); background:var(--chip); border:1.5px solid var(--line-strong); padding:5px 11px; border-radius:7px; }
.proj-links{ display:flex; flex-wrap:wrap; gap:10px; }
.proj-link{
  display:inline-flex; align-items:center; gap:7px; font-size:.88rem; font-weight:700;
  padding:9px 15px; border-radius:9px; border:var(--ink-border) solid var(--line-strong);
  background:var(--bg-elev);
  transition:transform .4s var(--ease-spring), box-shadow .18s var(--ease);
}
.proj-link:hover{ box-shadow:var(--shadow-sm); }
.proj-link.primary{ background:var(--accent-3); color:var(--chip-ink); }
.proj-link svg{ width:15px; height:15px; }

/* ---- PROJECT NETWORK (hub + spokes) ---- */
.project-network{ margin-bottom:52px; }
.network-hub{
  max-width:600px; margin:0 auto; background:var(--accent-fill); color:#fff;
  border:var(--ink-border) solid var(--line-strong); border-radius:22px;
  padding:32px 36px; box-shadow:var(--shadow-lg); text-align:center; position:relative; z-index:1;
}
.network-hub .flagship-badge{ background:var(--accent-3); color:var(--chip-ink); margin-bottom:16px; }
.network-hub h3{ font-family:var(--font-display); font-size:1.55rem; font-weight:600; margin-bottom:8px; }
.network-hub .caption{ color:var(--accent-3); font-weight:600; font-size:.96rem; margin-bottom:14px; }
.network-hub .desc{ color:rgba(255,255,255,.86); font-size:.94rem; margin-bottom:18px; max-width:480px; margin-left:auto; margin-right:auto; }
.network-hub .network-hub-tags{ display:flex; justify-content:center; margin-bottom:16px; }
.network-hub .network-hub-tags .tags{ justify-content:center; margin-bottom:0; }
.network-hub .tag{ background:rgba(255,255,255,.14); border-color:rgba(255,255,255,.4); color:#fff; }
.network-hub .proj-links{ justify-content:center; margin-bottom:18px; }
.network-hub .proj-link{ background:#fff; color:var(--chip-ink); border-color:#fff; }
.network-hub .proj-link.primary{ background:var(--accent-3); border-color:var(--line-strong); }
.network-hub .live-pill{
  display:inline-flex; align-items:center; gap:8px; font-size:.82rem; font-weight:700; color:var(--ink);
  background:var(--bg-elev); border:var(--ink-border) solid var(--line-strong); padding:8px 14px;
  border-radius:999px; box-shadow:var(--shadow-sm); transition:.18s var(--ease);
}
.network-hub .live-pill:hover{ transform:translate(-2px,-2px); box-shadow:var(--shadow-md); }
.network-hub .live-pill .status-dot{ background:#3aa66b; }
.network-trunk{ width:var(--ink-border); height:34px; background:var(--line-strong); margin:0 auto; }
.network-branches{ display:flex; flex-wrap:wrap; justify-content:center; gap:26px 20px; position:relative; padding-top:2px; }
.network-branches::before{
  content:""; position:absolute; top:0; left:8%; right:8%; height:var(--ink-border); background:var(--line-strong);
}
.network-node{
  position:relative; width:216px; padding-top:24px; flex:0 0 auto;
}
.network-node::before{
  content:""; position:absolute; top:0; left:50%; transform:translateX(-50%);
  width:var(--ink-border); height:24px; background:var(--line-strong);
}
.network-node-card{
  background:var(--bg-elev); border:var(--ink-border) solid var(--line-strong); border-radius:var(--radius-sm);
  padding:18px; box-shadow:var(--shadow-sm);
  transition:box-shadow .2s var(--ease), border-color .2s; height:100%;
  will-change:transform; transform-style:preserve-3d;
}
.network-node-card:hover{
  box-shadow:var(--shadow-md), 0 0 0 1px color-mix(in srgb, var(--accent) 30%, transparent), 0 0 24px color-mix(in srgb, var(--accent) 16%, transparent);
  border-color:color-mix(in srgb, var(--accent) 35%, var(--line-strong));
}
.network-node-card h4{ font-size:.96rem; font-weight:700; margin-bottom:5px; color:var(--ink); line-height:1.25; }
.network-node-card .caption{ font-size:.8rem; color:var(--ink-faint); font-style:italic; margin-bottom:10px; }
.network-node-card .proj-links{ margin-bottom:0; }
.network-node-card .proj-link{ padding:6px 11px; font-size:.78rem; }
@media (max-width:720px){
  .network-branches::before, .network-node::before{ display:none; }
  .network-trunk{ display:none; }
  .network-node{ width:100%; padding-top:0; }
  .network-branches{ flex-direction:column; align-items:stretch; gap:14px; }
}

/* ---- FILTERS ---- */
.filters{ display:flex; flex-wrap:wrap; gap:8px; margin-bottom:28px; }
.filter-chip{
  font-family:var(--font-sans); font-size:.86rem; font-weight:600; cursor:pointer;
  padding:8px 16px; border-radius:999px; border:var(--ink-border) solid var(--line-strong);
  background:var(--bg-elev); color:var(--ink); transition:.18s var(--ease);
}
.filter-chip:hover{ transform:translate(-2px,-2px); box-shadow:var(--shadow-sm); }
.filter-chip.active{ background:var(--ink); color:var(--bg-elev); }

/* ---- PROJECT GRID ---- */
.project-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:20px; }
.card{
  display:flex; flex-direction:column; background:var(--bg-elev);
  border:var(--ink-border) solid var(--line-strong); border-radius:var(--radius); padding:24px;
  box-shadow:var(--shadow-sm); transition:box-shadow .25s var(--ease), border-color .25s;
  position:relative; overflow:hidden;
  will-change:transform; transform-style:preserve-3d;
}
.card::before{
  content:""; position:absolute; inset:0 0 auto 0; height:4px;
  background:linear-gradient(90deg, var(--accent-2), var(--accent-3));
  transition:height .25s var(--ease);
}
.card[data-cat="Data Engineering"]::before{ background:linear-gradient(90deg, var(--accent-3), var(--accent)); }
.card[data-cat="Apps & Experiments"]::before{ background:linear-gradient(90deg, var(--accent-2), #e69a78); }
.card::after{
  content:""; position:absolute; inset:0; border-radius:var(--radius);
  background:radial-gradient(600px circle at var(--mx,50%) var(--my,50%), color-mix(in srgb, var(--accent) 8%, transparent) 0%, transparent 60%);
  opacity:0; transition:opacity .3s; pointer-events:none;
}
.card:hover::after{ opacity:1; }
.card:hover{
  box-shadow:var(--shadow-md), 0 0 0 1px color-mix(in srgb, var(--accent) 35%, transparent), 0 0 36px color-mix(in srgb, var(--accent) 22%, transparent);
  border-color:color-mix(in srgb, var(--accent) 40%, var(--line-strong));
}
.card:hover::before{ height:6px; }
.card-top{ display:flex; align-items:center; justify-content:space-between; gap:10px; margin-bottom:12px; margin-top:6px; }
.card-cat{ font-size:.72rem; font-weight:700; text-transform:uppercase; letter-spacing:.05em; color:var(--accent-ink); }
.card h3{ font-size:1.18rem; font-weight:700; letter-spacing:-.01em; margin-bottom:6px; line-height:1.25; color:var(--ink); }
.card .caption{ font-size:.9rem; color:var(--ink-faint); font-style:italic; margin-bottom:12px; }
.card .desc{ font-size:.94rem; color:var(--ink-soft); margin-bottom:16px; flex:1; }
.card .tags{ margin-bottom:16px; }
.card .proj-links{ margin-top:auto; }
.card-arrow{ color:var(--ink-faint); transition:.2s var(--ease); }
.card:hover .card-arrow{ color:var(--accent-2); transform:translate(3px,-3px); }

/* ---- HORIZONTAL TIMELINE ---- */
.timeline-h{
  display:flex; gap:22px; overflow-x:auto; padding:6px 6px 18px;
  scroll-snap-type:x mandatory; -webkit-overflow-scrolling:touch;
}
.timeline-h::-webkit-scrollbar{ height:8px; }
.timeline-h::-webkit-scrollbar-thumb{ background:var(--line-strong); border-radius:8px; }
.tl-card-h{
  scroll-snap-align:start; flex:0 0 auto; width:340px;
  background:var(--bg-elev); border:var(--ink-border) solid var(--line-strong); border-radius:var(--radius);
  padding:28px; box-shadow:var(--shadow-sm); display:flex; flex-direction:column;
}
.tl-card-h .tl-kind{
  display:inline-flex; align-self:flex-start; font-size:.74rem; font-weight:700; text-transform:uppercase;
  letter-spacing:.05em; color:var(--chip-ink); background:var(--accent-3); padding:4px 11px; border-radius:7px; margin-bottom:14px;
}
.tl-card-h .tl-dates{ font-size:.82rem; font-weight:700; color:var(--accent-2); letter-spacing:.02em; margin-bottom:6px; }
.tl-card-h .tl-role{ font-size:1.12rem; font-weight:700; margin-bottom:3px; letter-spacing:-.01em; color:var(--ink); line-height:1.25; }
.tl-card-h .tl-org{ font-size:.92rem; color:var(--ink-soft); margin-bottom:14px; }
.tl-card-h .tl-bullets{ list-style:none; display:flex; flex-direction:column; gap:9px; margin-bottom:8px; }
.tl-card-h .tl-bullets li{ position:relative; padding-left:18px; color:var(--ink-soft); font-size:.9rem; line-height:1.5; }
.tl-card-h .tl-bullets li::before{ content:""; position:absolute; left:1px; top:8px; width:6px; height:6px; border-radius:2px; background:var(--accent); }
.tl-card-h .tl-cert{ display:inline-flex; align-items:center; gap:6px; margin-top:auto; padding-top:12px; font-size:.84rem; font-weight:700; color:var(--accent-ink); }
.tl-card-h .tl-cert:hover{ text-decoration:underline; }

/* ---- SKILLS (bento) ---- */
.skills-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:18px; }
.skills-bento{ display:grid; grid-template-columns:repeat(4,1fr); grid-auto-rows:minmax(150px,auto); grid-auto-flow:dense; gap:18px; }
.skill-cat{ background:var(--bg-elev); border:var(--ink-border) solid var(--line-strong); border-radius:var(--radius); padding:24px; box-shadow:var(--shadow-sm); transition:transform .25s var(--ease-spring), box-shadow .25s var(--ease), border-color .25s; display:flex; flex-direction:column; position:relative; overflow:hidden; }
.skill-cat::after{
  content:""; position:absolute; inset:0; border-radius:var(--radius);
  opacity:0; transition:opacity .3s; pointer-events:none;
  background:radial-gradient(400px circle at 50% 50%, color-mix(in srgb, var(--accent) 10%, transparent) 0%, transparent 70%);
}
.skill-cat:hover{
  transform:translate(-3px,-4px);
  box-shadow:var(--shadow-md), 0 0 0 1px color-mix(in srgb, var(--accent) 32%, transparent), 0 0 28px color-mix(in srgb, var(--accent) 16%, transparent);
  border-color:color-mix(in srgb, var(--accent) 38%, var(--line-strong));
}
.skill-cat:hover::after{ opacity:1; }
.skill-cat[data-size="lg"]{ grid-column:span 2; grid-row:span 2; }
.skill-cat[data-size="md"]{ grid-column:span 2; }
.skill-cat[data-size="sm"]{ grid-column:span 1; }
.skill-cat.primary-skill{ background:var(--accent-fill); border-color:var(--line-strong); }
.skill-cat.primary-skill::before{
  content:""; position:absolute; inset:0;
  background:linear-gradient(135deg, rgba(145,166,255,.12) 0%, transparent 60%);
  pointer-events:none;
}
.skill-cat.primary-skill h3, .skill-cat.primary-skill h3::before{ color:#fff; }
.skill-cat.primary-skill .skill-tags span{
  background:rgba(255,255,255,.12); border-color:rgba(255,255,255,.25); color:#fff;
  transition:.2s;
}
.skill-cat.primary-skill .skill-tags span:hover{ background:rgba(255,255,255,.22); transform:translateY(-1px); }
.skill-cat[data-size="lg"] .skill-tags{ margin-top:auto; }
.skill-cat[data-size="lg"] h3{ font-size:1.3rem; }
.skill-cat h3{ font-size:1.02rem; font-weight:700; margin-bottom:14px; display:flex; align-items:center; gap:9px; color:var(--ink); }
.skill-cat h3::before{ content:""; width:10px; height:10px; border-radius:50%; background:var(--accent-2); }
.skill-tags{ display:flex; flex-wrap:wrap; gap:8px; align-content:flex-start; }
.skill-tags span{
  font-size:.82rem; font-weight:600; color:var(--ink); background:var(--chip);
  border:1.5px solid var(--line-strong); padding:6px 12px; border-radius:8px;
  transition:transform .18s var(--ease-spring), box-shadow .18s, border-color .18s, background .18s;
  cursor:default;
}
.skill-tags span:hover{
  transform:translateY(-2px);
  box-shadow:0 4px 12px color-mix(in srgb, var(--accent) 20%, transparent);
  border-color:color-mix(in srgb, var(--accent) 50%, var(--line-strong));
  background:color-mix(in srgb, var(--accent-soft) 60%, var(--chip));
}
@media (max-width:900px){
  .skills-bento{ grid-template-columns:repeat(2,1fr); }
  .skill-cat[data-size="lg"]{ grid-column:span 2; grid-row:span 1; }
  .skill-cat[data-size="md"]{ grid-column:span 2; }
}
@media (max-width:560px){
  .skills-bento{ grid-template-columns:1fr; }
  .skill-cat[data-size="lg"], .skill-cat[data-size="md"], .skill-cat[data-size="sm"]{ grid-column:span 1; grid-row:span 1; }
}

.building{ margin-top:32px; background:var(--bg-elev); border:var(--ink-border) dashed var(--line-strong); border-radius:var(--radius); padding:26px; }
.building h3{ font-size:1.02rem; font-weight:700; margin-bottom:6px; display:flex; align-items:center; gap:9px; color:var(--ink); }
.building h3 .status-dot{ background:var(--accent-3); animation:none; box-shadow:none; }
.building p{ color:var(--ink-soft); font-size:.96rem; margin-bottom:14px; }
.building .skill-tags span{ background:var(--accent-soft); border-color:transparent; color:var(--accent-ink); font-weight:600; }

/* ---- ACHIEVEMENTS (alternating, image-led) ---- */
.achieve-grid{ display:flex; flex-direction:column; gap:24px; margin-bottom:40px; }
.achieve{
  display:flex; gap:0; background:var(--bg-elev); border:var(--ink-border) solid var(--line-strong);
  border-radius:var(--radius); overflow:hidden; box-shadow:var(--shadow-sm);
  transition:transform .2s var(--ease), box-shadow .2s var(--ease);
}
.achieve:nth-child(even){ flex-direction:row-reverse; }
.achieve:hover{ transform:translate(-3px,-3px); box-shadow:var(--shadow-md); }
.achieve-img{ width:42%; max-width:340px; flex-shrink:0; object-fit:cover; cursor:zoom-in; background:var(--bg-alt); transition:filter .2s; }
.achieve-img:hover{ filter:brightness(1.05); }
.achieve-body{ padding:32px; display:flex; flex-direction:column; justify-content:center; }
.achieve-rank{ display:inline-block; font-size:.74rem; font-weight:700; letter-spacing:.04em; text-transform:uppercase; color:var(--chip-ink); background:var(--accent-3); padding:4px 10px; border-radius:6px; margin-bottom:10px; }
.achieve h3{ font-size:1.08rem; font-weight:700; line-height:1.25; margin-bottom:5px; color:var(--ink); }
.achieve .org{ font-size:.85rem; color:var(--ink-faint); margin-bottom:10px; }
.achieve .desc{ font-size:.92rem; color:var(--ink-soft); margin-bottom:12px; }
.achieve .links{ display:flex; gap:14px; }
.achieve .links a{ font-size:.84rem; font-weight:700; color:var(--accent-ink); }
.achieve .links a:hover{ text-decoration:underline; }

.certs-title{ font-size:1.1rem; font-weight:700; margin-bottom:18px; color:var(--ink); }
.cert-list{ display:grid; grid-template-columns:repeat(2,1fr); gap:12px; }
.cert{
  display:flex; align-items:center; justify-content:space-between; gap:14px;
  background:var(--bg-elev); border:1.5px solid var(--line-strong); border-radius:var(--radius-sm);
  padding:16px 20px; transition:.18s var(--ease);
}
.cert:hover{ transform:translate(-2px,-2px); box-shadow:var(--shadow-sm); }
.cert-main{ font-weight:700; font-size:.96rem; color:var(--ink); }
.cert-org{ font-size:.84rem; color:var(--ink-faint); }
.cert-meta{ display:flex; align-items:center; gap:12px; flex-shrink:0; }
.cert-date{ font-size:.8rem; color:var(--ink-faint); }
.cert-view{ font-size:.82rem; font-weight:700; color:var(--accent-ink); }

/* ---- ARCHIVE ---- */
.archive{ margin-top:48px; }
.archive-head{ display:flex; align-items:baseline; gap:10px; margin-bottom:16px; }
.archive-head h3{ font-size:1.1rem; font-weight:700; color:var(--ink); }
.archive-head span{ font-size:.86rem; color:var(--ink-faint); }
.archive-list{ display:flex; flex-wrap:wrap; gap:10px; }
.archive-list a{
  font-size:.86rem; font-weight:600; color:var(--ink-soft);
  background:var(--chip); border:1.5px dashed var(--line-strong); padding:7px 13px; border-radius:8px;
  transition:.18s var(--ease);
}
.archive-list a:hover{ color:var(--ink); border-style:solid; transform:translate(-1px,-1px); }

/* ---- ABOUT ---- */
.about{ display:grid; grid-template-columns:auto 1fr; gap:44px; align-items:start; }
.about-photo-wrap{ position:relative; }
.about-photo{
  width:220px; height:220px; border-radius:var(--radius); object-fit:cover;
  border:var(--ink-border) solid var(--line-strong); box-shadow:var(--shadow-md);
}
.about-photo-placeholder{
  width:220px; height:220px; border-radius:var(--radius); display:grid; place-items:center;
  background:var(--bg-elev); border:var(--ink-border) dashed var(--line-strong); box-shadow:var(--shadow-sm);
  color:var(--ink-faint);
}
.about-photo-placeholder svg{ width:64px; height:64px; opacity:.6; }
.about-body p{ color:var(--ink-soft); margin-bottom:14px; max-width:640px; }
.about-body a{ color:var(--accent-ink); font-weight:600; }
.about-body a:hover{ text-decoration:underline; }
.about-whisper{ font-family:var(--font-hand); font-size:1.3rem; color:var(--accent-2); margin-bottom:6px; }

/* ---- CONTACT ---- */
.contact{ text-align:center; position:relative; overflow:hidden; }
.contact::before{
  content:""; position:absolute; top:50%; left:50%; transform:translate(-50%,-50%);
  width:600px; height:600px; border-radius:50%;
  background:radial-gradient(circle, color-mix(in srgb, var(--accent) 12%, transparent) 0%, transparent 70%);
  pointer-events:none;
}
.contact .section-kicker{ display:inline-flex; }
.contact-title{ font-family:var(--font-display); font-weight:600; font-size:clamp(2.2rem,5vw,3.4rem); letter-spacing:-.02em; margin:14px 0 16px; color:var(--ink); }
.contact-lead{ color:var(--ink-soft); font-size:1.08rem; max-width:560px; margin:0 auto 34px; }
.contact-links{ display:flex; flex-wrap:wrap; gap:14px; justify-content:center; }
.contact-links a{
  display:inline-flex; align-items:center; gap:10px; font-weight:700; font-size:.98rem;
  padding:14px 24px; border-radius:13px; border:var(--ink-border) solid var(--line-strong); background:var(--bg-elev);
  box-shadow:var(--shadow-sm); transition:.22s var(--ease-spring);
}
.contact-links a:hover{ transform:translate(-3px,-4px); box-shadow:var(--shadow-md), 0 0 24px color-mix(in srgb, var(--accent) 16%, transparent); border-color:color-mix(in srgb, var(--accent) 40%, var(--line-strong)); }
.contact-links a.primary{ background:var(--accent-3); }
.contact-links a.primary:hover{ box-shadow:var(--shadow-md), 0 0 28px color-mix(in srgb, var(--accent-3) 40%, transparent); }
.contact-links svg{ width:19px; height:19px; }

/* ---- FOOTER ---- */
.footer{ border-top:var(--ink-border) solid var(--line-strong); padding:28px 0; }
.footer-inner{ display:flex; align-items:center; justify-content:space-between; gap:14px; font-size:.86rem; color:var(--ink-faint); }

/* ---- LIGHTBOX ---- */
.lightbox{ position:fixed; inset:0; z-index:300; background:rgba(20,16,8,.86); backdrop-filter:blur(6px); display:none; align-items:center; justify-content:center; flex-direction:column; padding:30px; }
.lightbox.open{ display:flex; animation:fade .25s var(--ease); }
@keyframes fade{ from{ opacity:0; } to{ opacity:1; } }
.lightbox img{ max-width:min(90vw,1000px); max-height:80vh; border-radius:12px; border:var(--ink-border) solid #fff; }
.lightbox-cap{ color:#fbf3e1; font-size:.92rem; margin-top:16px; text-align:center; }
.lightbox-close{ position:absolute; top:22px; right:26px; width:44px; height:44px; border-radius:50%; border:none; background:rgba(255,255,255,.14); color:#fff; font-size:1.6rem; cursor:pointer; transition:.2s; }
.lightbox-close:hover{ background:rgba(255,255,255,.26); transform:rotate(90deg); }

/* ---- REVEAL ANIM ---- */
.reveal{ opacity:0; transform:translateY(22px); transition:opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.in{ opacity:1; transform:none; }
.stagger > *{ opacity:0; transform:translateY(20px); transition:opacity .6s var(--ease), transform .6s var(--ease); }
.stagger.in > *{ opacity:1; transform:none; }
.stagger.in > *:nth-child(1){ transition-delay:.04s; }
.stagger.in > *:nth-child(2){ transition-delay:.10s; }
.stagger.in > *:nth-child(3){ transition-delay:.16s; }
.stagger.in > *:nth-child(4){ transition-delay:.22s; }
.stagger.in > *:nth-child(5){ transition-delay:.28s; }
.stagger.in > *:nth-child(6){ transition-delay:.34s; }
.stagger.in > *:nth-child(7){ transition-delay:.40s; }
.stagger.in > *:nth-child(8){ transition-delay:.46s; }

/* ---- COLLAPSIBLE SECTIONS ---- */
.collapsible{
  position:relative; max-height:var(--ch, 460px); overflow:hidden;
  transition:max-height .5s var(--ease);
}
.collapsible.expanded{ max-height:9999px; }
.collapsible.no-collapse{ max-height:none; overflow:visible; }
.collapsible-fade{
  position:absolute; left:0; right:0; bottom:0; height:110px; pointer-events:none;
  background:linear-gradient(to bottom, transparent, var(--bg) 80%);
  opacity:1; transition:opacity .3s var(--ease);
}
.section-alt .collapsible-fade{ background:linear-gradient(to bottom, transparent, var(--bg-alt) 80%); }
.collapsible.expanded .collapsible-fade,
.collapsible.no-collapse .collapsible-fade{ opacity:0; pointer-events:none; }
.expand-btn{
  display:flex; align-items:center; gap:8px; margin:22px auto 0;
  font-family:var(--font-sans); font-weight:700; font-size:.9rem; color:var(--ink);
  background:var(--bg-elev); border:var(--ink-border) solid var(--line-strong);
  padding:10px 20px; border-radius:999px; cursor:pointer; transition:.18s var(--ease);
}
.expand-btn:hover{ transform:translateY(-2px); box-shadow:var(--shadow-sm); }
.expand-btn svg{ width:15px; height:15px; transition:transform .3s var(--ease); }
.expand-btn.is-open svg{ transform:rotate(180deg); }
.expand-btn[hidden]{ display:none; }

/* ---- RESPONSIVE ---- */
@media (max-width:900px){
  .project-grid{ grid-template-columns:repeat(2,1fr); }
  .skills-grid{ grid-template-columns:repeat(2,1fr); }
  .about{ grid-template-columns:1fr; }
  .about-photo, .about-photo-placeholder{ width:160px; height:160px; }
  .command-strip{ flex-wrap:wrap; }
}
@media (max-width:720px){
  .achieve, .achieve:nth-child(even){ flex-direction:column; }
  .achieve-img{ width:100%; max-width:none; height:220px; }
  .tl-card-h{ width:300px; }
  .nav-links{
    position:fixed; top:68px; left:16px; right:16px; flex-direction:column; gap:4px;
    background:var(--bg-elev); border:var(--ink-border) solid var(--line-strong); border-radius:16px; padding:12px;
    box-shadow:var(--shadow-lg); transform:translateY(-12px); opacity:0; pointer-events:none; transition:.25s var(--ease);
  }
  .nav-links.open{ transform:none; opacity:1; pointer-events:auto; }
  .nav-links a{ padding:12px 14px; }
  .nav-burger{ display:flex; }
  .nav-resume{ display:none; }
  .hero{ padding:140px 0 60px; }
  .hero-sticker{ display:none; }
  .project-grid, .skills-grid, .cert-list{ grid-template-columns:1fr; }
  .section{ padding:72px 0; }
  .footer-inner{ flex-direction:column; gap:8px; text-align:center; }
}