/* ═══════════════════════════════════════════════════
   NANDAN DAS — PORTFOLIO  styles.css
   Theme: Terminal Dimension  |  Acid Lime on Navy-Black
   ═══════════════════════════════════════════════════ */

/* ─── TOKENS ─── */
:root {
  --ink:        #04080f;
  --ink2:       #080e18;
  --ink3:       #0c1320;
  --surface:    #111927;
  --surface2:   #18243a;
  --border:     rgba(255,255,255,0.06);
  --border2:    rgba(255,255,255,0.12);
  --txt:        #e8f0fb;
  --txt2:       #7a91b0;
  --txt3:       #3e5270;
  --lime:       #b9ff57;
  --lime-dim:   rgba(185,255,87,0.10);
  --lime-glow:  rgba(185,255,87,0.25);
  --cyan:       #30d5c8;
  --red:        #ff4f5e;
  --font-head:  'Bebas Neue', sans-serif;
  --font-body:  'Outfit', sans-serif;
  --font-mono:  'JetBrains Mono', monospace;
  --ease-out:   cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring:cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ─── RESET ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; }
body {
  font-family: var(--font-body);
  background: var(--ink);
  color: var(--txt);
  overflow-x: hidden;
  cursor: none;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}
@media (pointer: coarse) { body { cursor: auto; } }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { list-style: none; }
button { cursor: pointer; font: inherit; background: none; border: none; }
::selection { background: var(--lime-dim); color: var(--lime); }
::-webkit-scrollbar { width: 3px; }
::-webkit-scrollbar-track { background: var(--ink); }
::-webkit-scrollbar-thumb { background: var(--lime); border-radius: 99px; }

/* ─── GSAP CURSOR ─── */
#cur {
  width: 10px; height: 10px;
  background: var(--lime);
  border-radius: 50%;
  position: fixed; pointer-events: none; z-index: 9999;
  /* GSAP sets left/top directly */
  display: none;
  mix-blend-mode: exclusion;
}
#cur-ring {
  width: 40px; height: 40px;
  border: 1.5px solid rgba(185,255,87,0.5);
  border-radius: 50%;
  position: fixed; pointer-events: none; z-index: 9998;
  display: none;
}
@media (pointer: fine) {
  #cur, #cur-ring { display: block; }
}

/* ─── THREE.JS CANVAS ─── */
#three-canvas {
  position: fixed; inset: 0;
  width: 100%; height: 100%;
  z-index: 0; pointer-events: none;
}
.noise {
  position: fixed; inset: 0; z-index: 1; pointer-events: none;
  opacity: 0.028; mix-blend-mode: overlay;
}
.page { position: relative; z-index: 2; }

/* Three.js canvas inside hero-right (glitch overlay effect) */
#hero-gl {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  pointer-events: none; z-index: 0;
  border-radius: 50%;
  opacity: 0.45;
}

/* ─── NAV ─── */
nav {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 200;
  padding: 0 clamp(1.25rem, 5vw, 3rem);
  height: 64px;
  display: flex; align-items: center; justify-content: space-between;
  transition: background .4s, backdrop-filter .4s;
}
nav.scrolled {
  background: rgba(4,8,15,0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}
.nav-logo {
  font-family: var(--font-mono); font-size: .85rem;
  color: var(--lime); letter-spacing: .12em;
  display: flex; align-items: center; gap: 8px;
  z-index: 201;
}
.nav-logo-dot {
  width: 7px; height: 7px; background: var(--lime);
  border-radius: 50%;
  animation: blink-dot 2.4s ease-in-out infinite;
}
@keyframes blink-dot {
  0%,100% { opacity:1; transform:scale(1); }
  50%      { opacity:.3; transform:scale(.7); }
}
.nav-links {
  display: flex; gap: 2.5rem; align-items: center;
}
.nav-links a {
  font-family: var(--font-mono); font-size: .75rem;
  color: var(--txt2); letter-spacing: .1em; text-transform: uppercase;
  transition: color .2s; position: relative;
}
.nav-links a::after {
  content:''; position: absolute;
  bottom: -3px; left: 0; width: 0; height: 1px;
  background: var(--lime);
  transition: width .3s var(--ease-out);
}
.nav-links a:hover { color: var(--lime); }
.nav-links a:hover::after { width: 100%; }

/* Hire Me button — FIXED: hidden on mobile via media query, not display:none inline */
.nav-hire {
  font-family: var(--font-mono); font-size: .72rem;
  letter-spacing: .1em; text-transform: uppercase;
  color: var(--ink); background: var(--lime);
  padding: .45rem 1.1rem; border-radius: 2px;
  transition: transform .2s var(--ease-spring), box-shadow .2s;
  white-space: nowrap;
}
.nav-hire:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px var(--lime-glow);
}

/* Burger — hidden on desktop */
.nav-burger {
  display: none;
  flex-direction: column; gap: 5px;
  padding: 8px; z-index: 201;
  background: none; border: none; cursor: pointer;
}
.nav-burger span {
  display: block; width: 22px; height: 2px;
  background: var(--txt); border-radius: 2px;
  transition: transform .3s, opacity .3s;
  pointer-events: none;
}
.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); }

/* ─── MOBILE DRAWER — FIXED APPROACH ─── */
/* Use visibility + opacity instead of display:none so transitions work */
.nav-drawer {
  position: fixed;
  top: 64px; left: 0; right: 0;
  background: rgba(4,8,15,0.98);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid var(--border2);
  padding: 1.5rem clamp(1.25rem, 5vw, 2.5rem) 2rem;
  z-index: 199;
  /* hidden state */
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: opacity .3s var(--ease-out),
              visibility .3s,
              transform .3s var(--ease-out);
  /* always display block — controlled by opacity/visibility/pointer-events */
  display: block;
  pointer-events: none;
}
.nav-drawer.open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: all;
}
.nav-drawer a {
  display: block;
  font-family: var(--font-mono); font-size: 1rem;
  color: var(--txt2); letter-spacing: .08em;
  text-transform: uppercase;
  padding: .85rem 0;
  border-bottom: 1px solid var(--border);
  transition: color .2s, padding-left .2s;
}
.nav-drawer a:last-child { border-bottom: none; }
.nav-drawer a:hover { color: var(--lime); padding-left: .5rem; }
/* Hire Me link inside drawer */
.nav-drawer .drawer-hire {
  display: inline-flex; align-items: center; gap: .5rem;
  margin-top: 1.25rem;
  font-family: var(--font-mono); font-size: .78rem;
  letter-spacing: .1em; text-transform: uppercase;
  color: var(--ink); background: var(--lime);
  padding: .65rem 1.4rem; border-radius: 2px;
  border-bottom: none;
  transition: transform .2s var(--ease-spring), box-shadow .2s;
}
.nav-drawer .drawer-hire:hover {
  color: var(--ink); padding-left: 1.4rem;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px var(--lime-glow);
}

/* ─── HERO ─── */
.hero {
  min-height: 100svh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  padding: 100px clamp(1.25rem, 6vw, 5rem) 60px;
  gap: 4rem;
  position: relative; overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute; top: 0; right: 0;
  width: 1px; height: 70%;
  background: linear-gradient(to bottom, transparent, var(--lime), transparent);
  opacity: .15; pointer-events: none;
}
.hero-left { display: flex; flex-direction: column; gap: 1.75rem; }

/* ─── HERO ELEMENTS: hidden until GSAP reveals them ─── */
/* Using visibility:hidden (not opacity:0) so there is ZERO flash
   even before JS runs. GSAP sets visibility:visible before animating. */
.hero-tag,
.hero-name,
.hero-sig-wrap,
.hero-role-row,
.hero-desc,
.hero-cta,
.hero-socials,
.hex-wrap,
.hex-badge,
.stat-chip {
  visibility: hidden;
}

.hero-tag {
  display: inline-flex; align-items: center; gap: .55rem;
  font-family: var(--font-mono); font-size: .72rem;
  color: var(--lime); letter-spacing: .15em; text-transform: uppercase;
}
.hero-tag-line { display: inline-block; width: 32px; height: 1px; background: var(--lime); }

.hero-name {
  font-family: var(--font-head);
  font-size: clamp(5rem, 13vw, 11rem);
  line-height: .9; letter-spacing: .01em; color: var(--txt);
  /* opacity/animation handled entirely by GSAP — no CSS animation here */
}
.hero-name span {
  display: block; color: transparent;
  -webkit-text-stroke: 1.5px var(--lime);
}
/* ─── SIGNATURE VIDEO ─── */
.hero-sig-wrap {
  position: absolute;
  /* sit at the bottom of hex-wrap and pull up into it */
  bottom: 3.5rem;          /* sits inside the bottom of hex-wrap area */
  left: 50%;
  transform: translateX(-50%);
  width: clamp(220px, 36vw, 340px);
  height: 150px;
  overflow: visible;
  z-index: 15;
}
.hero-sig-video {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  object-fit: contain;
  object-position: center center;
  filter: invert(1) sepia(1) saturate(6) hue-rotate(43deg) brightness(1.2);
  mix-blend-mode: screen;
  pointer-events: none;
}

.hero-role-row {
  display: flex; align-items: center; gap: .75rem;
  font-family: var(--font-mono); font-size: .85rem; color: var(--txt2);
  /* GSAP handles entrance */
}
.hero-role-slash { color: var(--lime); opacity: .5; }
#type-text { color: var(--lime); }
.type-cursor {
  display: inline-block; width: 2px; height: 1em;
  background: var(--lime); margin-left: 2px;
  animation: blink-cur .9s step-end infinite;
  vertical-align: text-bottom;
}
@keyframes blink-cur { 0%,100%{opacity:1} 50%{opacity:0} }

.hero-desc {
  font-size: 1rem; line-height: 1.8; color: var(--txt2); max-width: 480px;
  /* GSAP handles entrance */
}
.hero-desc strong { color: var(--txt); font-weight: 500; }

.hero-cta {
  display: flex; gap: 1rem; flex-wrap: wrap; align-items: center;
  /* GSAP handles entrance */
}
.btn-primary {
  display: inline-flex; align-items: center; gap: .5rem;
  font-family: var(--font-mono); font-size: .78rem;
  letter-spacing: .1em; text-transform: uppercase;
  background: var(--lime); color: var(--ink);
  padding: .85rem 1.75rem; border-radius: 2px; font-weight: 600;
  transition: transform .2s var(--ease-spring), box-shadow .2s;
  white-space: nowrap;
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 12px 32px var(--lime-glow); }
.btn-ghost {
  display: inline-flex; align-items: center; gap: .5rem;
  font-family: var(--font-mono); font-size: .78rem;
  letter-spacing: .1em; text-transform: uppercase;
  color: var(--txt2); border: 1px solid var(--border2);
  padding: .85rem 1.75rem; border-radius: 2px;
  transition: all .25s; white-space: nowrap;
}
.btn-ghost:hover { color: var(--lime); border-color: var(--lime); background: var(--lime-dim); }

.hero-socials {
  display: flex; gap: .75rem; flex-wrap: wrap;
  /* GSAP handles entrance */
}
.soc-btn {
  width: 40px; height: 40px;
  border: 1px solid var(--border2); border-radius: 2px;
  display: flex; align-items: center; justify-content: center;
  color: var(--txt3); flex-shrink: 0;
  transition: all .25s var(--ease-spring);
}
.soc-btn:hover {
  color: var(--lime); border-color: var(--lime);
  background: var(--lime-dim); transform: translateY(-3px);
  box-shadow: 0 6px 20px var(--lime-glow);
}

/* ─── HERO PHOTO (hex) ─── */
.hero-right {
  display: flex; justify-content: center; align-items: center;
  position: relative;
  padding-bottom: 5rem; /* space for signature + stat chips below hex */
}
.hex-wrap {
  position: relative;
  width: clamp(260px, 35vw, 420px);
  aspect-ratio: 1;
}
.hex-glow {
  position: absolute; inset: -30px;
  background: radial-gradient(circle, rgba(185,255,87,.18) 0%, transparent 65%);
  animation: pulse-glow 4s ease-in-out infinite;
  pointer-events: none;
}
@keyframes pulse-glow {
  0%,100% { transform:scale(1); opacity:.7; }
  50%      { transform:scale(1.1); opacity:1; }
}
.hex-svg {
  position: absolute; inset: -6px;
  width: calc(100% + 12px); height: calc(100% + 12px);
  animation: rotate-hex 30s linear infinite;
  pointer-events: none;
}
.hex-svg-inner {
  position: absolute; inset: 10px;
  animation: rotate-hex 20s linear infinite reverse;
  pointer-events: none;
}
@keyframes rotate-hex { to { transform: rotate(360deg); } }

.hex-photo {
  width: 100%; height: 100%;
  clip-path: polygon(50% 0%,93% 25%,93% 75%,50% 100%,7% 75%,7% 25%);
  overflow: hidden; position: relative; z-index: 2;
  transition: clip-path .4s var(--ease-out);
}
.hex-photo:hover { clip-path: polygon(50% 2%,95% 26%,95% 74%,50% 98%,5% 74%,5% 26%); }
.hex-photo img {
  width:100%; height:100%; object-fit:cover;
  filter: contrast(1.08) saturate(1.1);
  transition: transform .6s var(--ease-out), filter .4s;
}
.hex-photo:hover img { transform: scale(1.04); }
.hex-sheen {
  position:absolute; inset:0; z-index:3;
  clip-path: polygon(50% 0%,93% 25%,93% 75%,50% 100%,7% 75%,7% 25%);
  background: linear-gradient(135deg,rgba(255,255,255,.18) 0%,transparent 45%);
  pointer-events:none;
}
.hex-badge {
  position: absolute; font-family: var(--font-mono);
  font-size: .68rem; letter-spacing: .06em; color: var(--lime);
  background: rgba(4,8,15,.85); border: 1px solid rgba(185,255,87,.3);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  padding: .4rem .85rem; border-radius: 2px;
  white-space: nowrap; z-index: 10;
  box-shadow: 0 4px 20px rgba(0,0,0,.5), inset 0 1px 0 rgba(255,255,255,.06);
}
.hex-badge.b1 { top:8%; right:-8%; animation: floatY 3.5s ease-in-out infinite; }
.hex-badge.b2 { bottom:15%; left:-10%; animation: floatY 4s ease-in-out infinite .8s; }
.hex-badge.b3 { top:55%; right:-12%; animation: floatY 3s ease-in-out infinite 1.5s; }
@keyframes floatY { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-8px)} }

.hero-stats {
  position: absolute; bottom: -3.5rem; left: 50%;
  transform: translateX(-50%);
  display: flex; gap: .75rem; white-space: nowrap;
}
.stat-chip {
  font-family: var(--font-mono); font-size: .68rem; color: var(--txt2);
  letter-spacing: .06em; background: var(--surface);
  border: 1px solid var(--border); padding: .35rem .8rem; border-radius: 2px;
  transition: all .2s;
}
.stat-chip span { color: var(--lime); font-weight: 500; }
.stat-chip:hover { border-color: var(--lime); color: var(--lime); }

/* Scroll hint */
.scroll-hint {
  position: absolute; bottom: 2rem; left: 50%;
  transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: .4rem;
  opacity: .4; animation: fadeUp .6s 1.5s both;
}
.scroll-hint-line {
  width:1px; height:50px;
  background: linear-gradient(to bottom, var(--txt3), transparent);
  animation: scroll-drip 2s ease-in-out infinite;
}
@keyframes scroll-drip {
  0%  { transform:scaleY(0); transform-origin:top; }
  50% { transform:scaleY(1); transform-origin:top; }
  51% { transform-origin:bottom; }
  100%{ transform:scaleY(0); transform-origin:bottom; }
}
.scroll-hint-label {
  font-family: var(--font-mono); font-size: .6rem;
  letter-spacing: .25em; text-transform: uppercase; color: var(--txt3);
}

/* ─── SECTIONS ─── */
section { padding: 6rem clamp(1.25rem,6vw,5rem); position: relative; }
.sec-label {
  display: flex; align-items: center; gap: .75rem;
  font-family: var(--font-mono); font-size: .7rem;
  color: var(--txt3); letter-spacing: .15em; text-transform: uppercase;
  margin-bottom: 1.25rem;
}
.sec-label-num { color: var(--lime); }
.sec-label-line { flex:1; max-width:48px; height:1px; background:var(--border2); }
.sec-title {
  font-family: var(--font-head);
  font-size: clamp(3rem, 7vw, 6.5rem);
  line-height: .9; letter-spacing: .01em; color: var(--txt);
  margin-bottom: 1rem;
}
.sec-title .accent { color: var(--lime); }

/* Reveal animations */
/* Reveal classes — animation handled by GSAP ScrollTrigger */
.reveal  { opacity: 0; }
.reveal-r{ opacity: 0; }

/* ─── MARQUEE ─── */
.marquee-strip {
  background: var(--lime); padding: .9rem 0;
  overflow: hidden; white-space: nowrap;
}
.marquee-track {
  display: inline-flex; gap: 3rem;
  animation: marquee-scroll 18s linear infinite;
}
@keyframes marquee-scroll { from{transform:translateX(0)} to{transform:translateX(-50%)} }
.marquee-item {
  font-family: var(--font-head); font-size: 1rem;
  letter-spacing: .08em; color: var(--ink);
  display: inline-flex; align-items: center; gap: 1rem;
}
.marquee-dot { width:6px; height:6px; background:var(--ink); border-radius:50%; opacity:.4; }

/* ─── ABOUT ─── */
.about { background: var(--ink2); }
.about-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 5rem; align-items: start;
}
.about-body { font-size:1.05rem; line-height:1.9; color:var(--txt2); }
.about-body p + p { margin-top:1.2rem; }
.about-body strong { color:var(--lime); font-weight:500; }

.about-terminal {
  background: var(--surface); border: 1px solid var(--border2);
  border-radius: 6px; overflow: hidden;
}
.term-bar {
  background: var(--surface2); padding: .7rem 1rem;
  display: flex; align-items: center; gap: .5rem;
  border-bottom: 1px solid var(--border);
}
.term-dot { width:10px; height:10px; border-radius:50%; }
.term-dot.r { background:#ff5f57; }
.term-dot.y { background:#febc2e; }
.term-dot.g { background:#28c840; }
.term-title {
  margin: 0 auto;
  font-family: var(--font-mono); font-size: .72rem;
  color: var(--txt3); letter-spacing: .06em;
}
.term-body {
  padding: 1.5rem;
  font-family: var(--font-mono); font-size: .78rem; line-height: 1.8;
}
.term-body p { display:flex; gap:.5rem; flex-wrap:wrap; }
.t-key  { color: var(--cyan); }
.t-op   { color: var(--txt3); }
.t-str  { color: #f8c16e; }
.t-arr  { color: #b5b5ff; }
.t-bool { color: var(--lime); }
.t-cmt  { color: var(--txt3); font-style:italic; }
.t-prompt { color:var(--lime); margin-right:.5rem; user-select:none; }

.about-stats {
  display: grid; grid-template-columns: repeat(3,1fr);
  gap: 1rem; margin-top: 2.5rem;
}
.about-stat {
  background: var(--ink); border: 1px solid var(--border);
  padding: 1.25rem 1rem; border-radius: 4px;
  text-align: center; transition: border-color .25s, transform .25s;
}
.about-stat:hover { border-color:var(--lime); transform:translateY(-4px); }
.about-stat-num {
  display:block; font-family:var(--font-head);
  font-size:2.8rem; color:var(--lime); line-height:1;
}
.about-stat-label {
  font-family:var(--font-mono); font-size:.68rem;
  color:var(--txt3); letter-spacing:.08em; text-transform:uppercase; margin-top:.3rem;
}

/* ─── SKILLS ─── */
.skills { background: var(--ink3); }
.skills-layout {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 4rem; align-items: start;
}

/* Skill category cards */
.skill-cats {
  display: grid; grid-template-columns: 1fr 1fr; gap: 1rem;
}
.skill-cat {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 6px; padding: 1.4rem;
  transition: all .3s var(--ease-spring);
  position: relative; overflow: hidden;
}
.skill-cat::after {
  content:''; position:absolute; bottom:0; left:0; right:0;
  height:2px;
  background: linear-gradient(90deg, var(--lime), var(--cyan));
  transform:scaleX(0); transform-origin:left;
  transition: transform .4s var(--ease-out);
}
.skill-cat:hover { border-color:rgba(185,255,87,.25); transform:translateY(-4px); box-shadow:0 12px 32px rgba(0,0,0,.4); }
.skill-cat:hover::after { transform:scaleX(1); }
.skill-cat-icon {
  width:38px; height:38px;
  background:var(--lime-dim); border:1px solid rgba(185,255,87,.18);
  border-radius:4px; display:flex; align-items:center; justify-content:center;
  color:var(--lime); margin-bottom:1rem;
}
.skill-cat-title { font-size:.88rem; font-weight:600; color:var(--txt); margin-bottom:.5rem; }
.skill-cat-tags { display:flex; flex-wrap:wrap; gap:.35rem; }
.skill-cat-tag {
  font-family:var(--font-mono); font-size:.6rem; letter-spacing:.05em;
  color:var(--txt3); background:var(--ink3);
  border:1px solid var(--border); padding:.18rem .55rem; border-radius:2px;
  transition: all .2s;
}
.skill-cat:hover .skill-cat-tag { border-color:rgba(185,255,87,.15); color:var(--txt2); }

/* Tech chip grid */
.tech-grid {
  display: grid; grid-template-columns: repeat(4,1fr); gap: .75rem;
}
.tech-chip {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 4px; padding: .85rem .75rem;
  display:flex; flex-direction:column; align-items:center; gap:.5rem;
  transition: all .25s var(--ease-spring);
  cursor: default; flex-shrink:0;
}
.tech-chip:hover {
  border-color:var(--lime); background:var(--lime-dim);
  transform:translateY(-5px); box-shadow:0 8px 24px var(--lime-glow);
}
.tech-chip-icon { width:36px; height:36px; display:flex; align-items:center; justify-content:center; }
.tech-chip-label {
  font-family:var(--font-mono); font-size:.6rem;
  color:var(--txt3); letter-spacing:.06em; text-transform:uppercase;
}
.tech-chip:hover .tech-chip-label { color:var(--lime); }

/* ─── PROJECTS ─── */
.projects { background: var(--ink2); }
.projects-header {
  display:flex; align-items:flex-end; justify-content:space-between;
  margin-bottom:3rem; flex-wrap:wrap; gap:1.25rem;
}
.proj-filter { display:flex; gap:.5rem; flex-wrap:wrap; }
.proj-filter-btn {
  font-family:var(--font-mono); font-size:.68rem;
  letter-spacing:.1em; text-transform:uppercase;
  color:var(--txt3); border:1px solid var(--border);
  padding:.4rem .9rem; border-radius:2px;
  cursor:pointer; background:none; transition:all .2s;
}
.proj-filter-btn:hover { color:var(--lime); border-color:var(--lime); background:var(--lime-dim); }
.proj-filter-btn.active { color:var(--ink); background:var(--lime); border-color:var(--lime); }

.projects-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:1.25rem; }
.proj-card {
  background:var(--surface); border:1px solid var(--border);
  border-radius:6px; padding:1.75rem;
  transition:all .3s var(--ease-out);
  position:relative; overflow:hidden; cursor:default;
}
.proj-card::before {
  content:''; position:absolute; top:0; left:0;
  width:3px; height:0; background:var(--lime);
  transition: height .4s var(--ease-out);
}
.proj-card:hover { border-color:rgba(185,255,87,.2); transform:translateY(-5px); }
.proj-card:hover::before { height:100%; }
.proj-card.hidden { display:none; }
.proj-card-top {
  display:flex; justify-content:space-between;
  align-items:flex-start; margin-bottom:1.25rem;
}
.proj-icon {
  width:44px; height:44px;
  background:var(--lime-dim); border:1px solid rgba(185,255,87,.2);
  border-radius:4px; display:flex; align-items:center; justify-content:center;
  color:var(--lime);
}
.proj-num { font-family:var(--font-mono); font-size:.65rem; color:var(--txt3); letter-spacing:.1em; }
.proj-featured-badge {
  font-family:var(--font-mono); font-size:.6rem; letter-spacing:.08em; text-transform:uppercase;
  color:var(--lime); background:var(--lime-dim);
  border:1px solid rgba(185,255,87,.3); padding:.2rem .6rem; border-radius:2px;
}
.proj-title { font-size:1.05rem; font-weight:600; color:var(--txt); margin-bottom:.6rem; }
.proj-desc { font-size:.875rem; color:var(--txt2); line-height:1.7; margin-bottom:1.25rem; }
.proj-tags { display:flex; flex-wrap:wrap; gap:.4rem; margin-bottom:1.25rem; }
.proj-tag {
  font-family:var(--font-mono); font-size:.62rem; letter-spacing:.06em;
  color:var(--txt3); background:var(--ink); border:1px solid var(--border);
  padding:.2rem .6rem; border-radius:2px;
}
.proj-links { display:flex; gap:.5rem; }
.proj-link {
  display:inline-flex; align-items:center; gap:.4rem;
  font-family:var(--font-mono); font-size:.65rem;
  letter-spacing:.08em; text-transform:uppercase;
  color:var(--txt3); border:1px solid var(--border);
  padding:.4rem .75rem; border-radius:2px; transition:all .2s;
}
.proj-link:hover { color:var(--lime); border-color:var(--lime); background:var(--lime-dim); }
.proj-link.demo { color:var(--lime); border-color:rgba(185,255,87,.3); }
.proj-link.demo:hover { background:var(--lime-dim); }

/* ─── CHESS ─── */
.chess-sec { background: var(--ink); }
.chess-inner { display:grid; grid-template-columns:1fr 1fr; gap:3.5rem; align-items:center; }
.chess-pillars { display:grid; grid-template-columns:1fr 1fr; gap:1rem; margin-top:1.5rem; }
.chess-pillar {
  background:var(--surface); border:1px solid var(--border);
  border-radius:4px; padding:1.1rem; transition:all .25s;
}
.chess-pillar:hover { border-color:var(--lime); transform:translateY(-3px); }
.chess-pillar-icon { width:28px; height:28px; color:var(--lime); margin-bottom:.6rem; }
.chess-pillar h4 { font-size:.82rem; font-weight:600; color:var(--txt); margin-bottom:.3rem; }
.chess-pillar p { font-size:.75rem; color:var(--txt2); line-height:1.55; }
.chess-board-wrap { display:flex; flex-direction:column; align-items:center; gap:1.25rem; }
.chess-board {
  display:grid; grid-template-columns:repeat(8,1fr);
  border:1px solid var(--border2); border-radius:4px; overflow:hidden;
  box-shadow:0 10px 32px rgba(0,0,0,.5);
  width:min(280px,88vw); aspect-ratio:1; flex-shrink:0;
}
.chess-sq {
  aspect-ratio:1; display:flex; align-items:center; justify-content:center;
  font-size:clamp(.55rem,2.2vw,.85rem);
}
.chess-sq.d { background:#0f1e14; }
.chess-sq.l { background:#1a3020; }
.chess-sq.hi { background:rgba(185,255,87,.1); }
.chess-quote {
  font-family:var(--font-mono); font-size:.7rem;
  color:var(--lime); opacity:.55; font-style:italic;
  text-align:center; max-width:260px;
}

/* ─── CONTACT ─── */
.contact-sec { background: var(--ink2); }
.contact-inner { display:grid; grid-template-columns:1fr 1fr; gap:4rem; align-items:start; }
.contact-left { display:flex; flex-direction:column; gap:1.5rem; }
.contact-email-block {
  background:var(--surface); border:1px solid var(--border2);
  border-radius:6px; padding:1.5rem; transition:border-color .25s; display:block;
}
.contact-email-block:hover { border-color:rgba(185,255,87,.3); }
.contact-email-label {
  font-family:var(--font-mono); font-size:.65rem;
  color:var(--txt3); letter-spacing:.12em; text-transform:uppercase;
  margin-bottom:.6rem; display:block;
}
.contact-email-addr {
  font-family:var(--font-mono); font-size:clamp(.85rem,2.2vw,1.05rem);
  color:var(--lime); display:flex; align-items:center; gap:.5rem;
  word-break:break-all;
}
.contact-email-addr:hover { opacity:.75; }

/* Availability card */
.avail-card {
  background:var(--surface); border:1px solid var(--border2); border-radius:6px; padding:1.5rem;
}
.avail-header { display:flex; align-items:center; gap:.6rem; margin-bottom:1.1rem; }
.avail-dot {
  width:9px; height:9px; border-radius:50%; background:var(--lime);
  box-shadow:0 0 0 3px rgba(185,255,87,.2); flex-shrink:0;
  animation: pulse-avail 2.5s ease-in-out infinite;
}
@keyframes pulse-avail {
  0%,100% { box-shadow:0 0 0 3px rgba(185,255,87,.2); }
  50%      { box-shadow:0 0 0 6px rgba(185,255,87,.08); }
}
.avail-title {
  font-family:var(--font-mono); font-size:.72rem;
  color:var(--lime); letter-spacing:.1em; text-transform:uppercase;
}
.avail-items { display:flex; flex-direction:column; gap:.6rem; }
.avail-item { display:flex; align-items:center; gap:.75rem; font-size:.85rem; color:var(--txt2); }
.avail-item-icon {
  width:32px; height:32px; flex-shrink:0;
  background:var(--lime-dim); border:1px solid rgba(185,255,87,.15);
  border-radius:3px; display:flex; align-items:center; justify-content:center; color:var(--lime);
}
.contact-social-list { display:grid; grid-template-columns:1fr 1fr; gap:.65rem; }
.c-soc {
  display:flex; align-items:center; gap:.65rem;
  background:var(--surface); border:1px solid var(--border);
  border-radius:4px; padding:.75rem .9rem;
  color:var(--txt2); font-size:.82rem; font-weight:500;
  transition:all .25s; min-width:0;
}
.c-soc span { overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.c-soc:hover { border-color:var(--lime); color:var(--lime); background:var(--lime-dim); transform:translateX(3px); }
.c-soc svg { flex-shrink:0; }

/* ─── FOOTER ─── */
footer {
  background:var(--ink); border-top:1px solid var(--border);
  padding:2rem clamp(1.25rem,6vw,5rem);
  display:flex; align-items:center; justify-content:space-between;
  flex-wrap:wrap; gap:1rem;
}
.footer-logo { font-family:var(--font-mono); font-size:.8rem; color:var(--lime); letter-spacing:.1em; }
.footer-copy { font-family:var(--font-mono); font-size:.7rem; color:var(--txt3); letter-spacing:.06em; }
.footer-top {
  width:38px; height:38px; border:1px solid var(--border2); border-radius:2px;
  display:flex; align-items:center; justify-content:center;
  color:var(--txt3); transition:all .25s; flex-shrink:0;
}
.footer-top:hover { border-color:var(--lime); color:var(--lime); background:var(--lime-dim); transform:translateY(-3px); }

/* ─── KEYFRAMES ─── */
@keyframes fadeUp   { from{opacity:0;transform:translateY(20px)} to{opacity:1;transform:none} }
@keyframes fadeRight{ from{opacity:0;transform:translateX(32px)} to{opacity:1;transform:none} }

/* ═══════════════════════════════════════
   RESPONSIVE
═══════════════════════════════════════ */

/* ── ≤1024px tablet ── */
@media (max-width: 1024px) {
  .nav-links { display:none; }
  .nav-hire  { display:none; }
  .nav-burger{ display:flex; }

  .hero { grid-template-columns:1fr; text-align:center; padding-bottom:100px; gap:3rem; }
  .hero-left { align-items:center; }
  .hero-desc { max-width:560px; text-align:center; }
  .hero-right { order:-1; }
  .hero-stats { position:static; transform:none; margin-top:2rem; justify-content:center; }

  .about-grid { grid-template-columns:1fr; gap:3rem; }
  .skills-layout { grid-template-columns:1fr; gap:3rem; }
  .tech-grid { grid-template-columns:repeat(5,1fr); }
  .projects-grid { grid-template-columns:1fr 1fr; }
  .chess-inner { grid-template-columns:1fr; gap:3rem; }
  .chess-board-wrap { align-items:center; }
  .contact-inner { grid-template-columns:1fr; gap:3rem; }
}

/* ── ≤768px mobile ── */
@media (max-width: 768px) {
  section { padding:3.5rem clamp(1rem,5vw,2rem); }

  .hero { padding:80px 1.25rem 50px; gap:2rem; }
  .hero-name { font-size:clamp(3.8rem,16vw,6rem); }
  .hero-desc { font-size:.92rem; }
  .hex-wrap { width:min(260px,68vw); }
  .hex-badge.b2,.hex-badge.b3 { display:none; }
  .hex-badge.b1 { right:0; top:4%; font-size:.6rem; padding:.3rem .65rem; }
  .hero-stats { flex-wrap:wrap; justify-content:center; gap:.5rem; }

  .about-stats { grid-template-columns:repeat(3,1fr); gap:.65rem; }
  .about-stat-num { font-size:2.2rem; }

  .skill-cats { grid-template-columns:1fr 1fr; gap:.75rem; }
  .skill-cat { padding:1.1rem; }
  .tech-grid { grid-template-columns:repeat(4,1fr); gap:.6rem; }
  .tech-chip { padding:.7rem .5rem; }
  .tech-chip-icon { width:28px; height:28px; }

  .projects-grid { grid-template-columns:1fr; }
  .projects-header { flex-direction:column; align-items:flex-start; gap:1.25rem; }

  .chess-pillars { grid-template-columns:1fr 1fr; }
  .chess-board { width:min(240px,80vw); }

  .contact-social-list { grid-template-columns:1fr 1fr; gap:.6rem; }
  .c-soc { padding:.65rem .75rem; font-size:.78rem; }

  .sec-title { font-size:clamp(2.4rem,10vw,4rem); }
  footer { gap:.75rem; }
}

/* ── ≤480px small phones ── */
@media (max-width: 480px) {
  section { padding:3rem 1rem; }
  .hero { padding:76px 1rem 40px; }
  .hero-name { font-size:clamp(3.2rem,18vw,5rem); }
  .hero-sig-wrap { height: 40px; width: clamp(130px, 50vw, 200px); }
  .hero-cta { flex-direction:column; align-items:stretch; width:100%; }
  .btn-primary,.btn-ghost { width:100%; justify-content:center; }
  .hero-socials { justify-content:center; gap:6px; }
  .soc-btn { width:36px; height:36px; }
  .hex-wrap { width:min(220px,74vw); }

  .about-stats { grid-template-columns:1fr 1fr; }
  .skill-cats { grid-template-columns:1fr; }
  .tech-grid { grid-template-columns:repeat(3,1fr); gap:.5rem; }
  .chess-pillars { grid-template-columns:1fr; }
  .chess-board { width:min(200px,88vw); }
  .contact-social-list { grid-template-columns:1fr; }
  .contact-email-addr { font-size:.82rem; }
  footer { flex-direction:column; align-items:center; text-align:center; }
}

/* ── ≤360px very small ── */
@media (max-width: 360px) {
  .hero-name { font-size:3rem; }
  .hex-wrap { width:190px; }
  .about-stats { grid-template-columns:repeat(3,1fr); }
  .tech-grid { grid-template-columns:repeat(3,1fr); }
}


/* ═══════════════════════════════════════════
   GSAP + THREE.JS EFFECT STYLES
═══════════════════════════════════════════ */

/* Split text chars */
.char {
  display: inline-block;
  overflow: hidden;
}

/* Glitch effect on hero name */
.hero-name {
  position: relative;
}
.hero-name::before,
.hero-name::after {
  content: attr(data-text);
  position: absolute;
  inset: 0;
  font-family: var(--font-head);
  font-size: inherit;
  line-height: inherit;
  pointer-events: none;
  opacity: 0;
}
.hero-name.glitch::before {
  color: var(--cyan);
  clip-path: polygon(0 20%, 100% 20%, 100% 35%, 0 35%);
  transform: translateX(-3px);
  opacity: 0.7;
  animation: glitch-top 0.15s linear;
}
.hero-name.glitch::after {
  color: var(--lime);
  clip-path: polygon(0 65%, 100% 65%, 100% 80%, 0 80%);
  transform: translateX(3px);
  opacity: 0.7;
  animation: glitch-bot 0.15s linear;
}
@keyframes glitch-top {
  0%   { transform: translateX(-3px) skewX(-2deg); }
  50%  { transform: translateX(3px) skewX(2deg); }
  100% { transform: translateX(0); }
}
@keyframes glitch-bot {
  0%   { transform: translateX(3px) skewX(2deg); }
  50%  { transform: translateX(-3px) skewX(-2deg); }
  100% { transform: translateX(0); }
}

/* Magnetic button wrapper */
.magnetic { display: inline-block; }

/* ScrollTrigger section line reveals */
.sec-line {
  height: 1px;
  background: linear-gradient(90deg, var(--lime), var(--cyan), transparent);
  transform-origin: left;
  transform: scaleX(0);
}

/* GSAP text reveal lines */
.line-wrap { overflow: hidden; display: block; }

/* Project cards GSAP tilt surface */
.proj-card { transform-style: preserve-3d; }

/* Lenis scroll progress bar */
#scroll-progress {
  position: fixed; top: 0; left: 0;
  height: 2px; width: 0%;
  background: linear-gradient(90deg, var(--lime), var(--cyan));
  z-index: 9997;
  transform-origin: left;
  box-shadow: 0 0 8px var(--lime-glow);
}

/* Three.js hero scene overlay */
.hero-right { isolation: isolate; }

/* Section number large watermark */
.sec-num-bg {
  position: absolute;
  right: 0; top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-head);
  font-size: clamp(6rem, 20vw, 18rem);
  color: transparent;
  -webkit-text-stroke: 1px rgba(185,255,87,0.04);
  pointer-events: none;
  user-select: none;
  line-height: 1;
  z-index: 0;
}

/* Stat cards GSAP stagger */
.about-stat { transform-origin: bottom; }

/* Chess board GSAP reveal */
.chess-board { perspective: 600px; }
.chess-sq { transition: background .3s; }

/* Mobile: disable heavy Three.js */
@media (pointer: coarse) {
  #three-canvas { display: none; }
}


/* Project card CSS shine effect (driven by GSAP custom props) */
.proj-card::after {
  content: '';
  position: absolute; inset: 0;
  border-radius: 6px;
  background: radial-gradient(
    circle at var(--shine-x, 50%) var(--shine-y, 50%),
    rgba(185,255,87,0.08) 0%,
    transparent 60%
  );
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s;
}
.proj-card:hover::after { opacity: 1; }

/* Nav active link style */
.nav-links a.active { color: var(--lime); }
.nav-links a.active::after { width: 100%; }

/* Three.js sphere canvas inside hero-right */
#hero-gl {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  pointer-events: none; z-index: 0;
  opacity: 0.5;
}

/* ═══════════════════════════════════════════
   PRELOADER
═══════════════════════════════════════════ */
#preloader {
  position: fixed; inset: 0; z-index: 10000;
  background: var(--ink);
  display: flex; align-items: center; justify-content: center;
}
#preloader-canvas {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  pointer-events: none;
}
#preloader-text {
  position: relative; z-index: 1;
  display: flex; flex-direction: column; align-items: center; gap: 1.2rem;
  text-align: center;
}
.pre-name {
  font-family: var(--font-head);
  font-size: clamp(2.5rem, 8vw, 5rem);
  color: var(--txt);
  letter-spacing: .12em;
}
.pre-bar {
  width: clamp(200px, 40vw, 360px); height: 2px;
  background: rgba(185,255,87,0.15);
  border-radius: 99px; overflow: hidden;
  display: block;
}
#pre-fill {
  display: block; height: 100%; width: 0%;
  background: linear-gradient(90deg, var(--lime), var(--cyan));
  border-radius: 99px;
  box-shadow: 0 0 12px var(--lime-glow);
  transition: width 0.1s linear;
}
.pre-pct {
  font-family: var(--font-mono); font-size: .75rem;
  color: var(--lime); letter-spacing: .15em;
}

/* ═══════════════════════════════════════════
   SECTION CANVASES
═══════════════════════════════════════════ */
.sec-canvas {
  position: absolute;
  pointer-events: none;
  z-index: 0;
}
#about-canvas {
  right: -60px; top: 50%;
  transform: translateY(-50%);
  width: min(420px, 45vw); height: min(420px, 45vw);
  opacity: 0.55;
}
#skills-canvas {
  left: 50%; top: 50%;
  transform: translate(-50%, -50%);
  width: 100%; height: 100%;
  opacity: 0.12;
}
#projects-canvas {
  inset: 0;
  width: 100%; height: 100%;
  opacity: 0.18;
}
#contact-canvas {
  right: 0; top: 0; bottom: 0;
  width: 50%; height: 100%;
  opacity: 0.5;
}
/* Ensure sections are positioned so canvases work */
.about, .skills, .projects, .contact-sec {
  position: relative;
  overflow: hidden;
}
/* Mobile: lighter opacity */
@media (max-width: 768px) {
  #about-canvas   { opacity: 0.3; width: 220px; height: 220px; right: -20px; }
  #contact-canvas { width: 100%; opacity: 0.25; }
  #projects-canvas{ opacity: 0.1; }
  #skills-canvas  { opacity: 0.08; }
}