/* ============================================================
   folio - Mohd Sahil · dark glass / cyber-minimal
   ============================================================ */

:root {
  --bg: #050816;
  --bg-2: #0a0f24;
  --bg-3: #101735;
  --primary: #4f9dff;
  --accent: #00f5ff;
  --purple: #8b5cf6;
  --green: #22c55e;
  --text: #e6ecff;
  --text-dim: #93a0c4;
  --text-mute: #5a6890;
  --line: rgba(148, 170, 255, 0.12);
  --glass: rgba(16, 23, 53, 0.55);
  --glow-primary: rgba(79, 157, 255, 0.35);
  --glow-accent: rgba(0, 245, 255, 0.28);
  --font-body: "Inter", system-ui, sans-serif;
  --font-display: "Space Grotesk", var(--font-body);
  --font-mono: "JetBrains Mono", ui-monospace, monospace;
  --ease-spring: cubic-bezier(0.22, 1.2, 0.36, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --nav-h: 64px;
}

/* accent themes (switcher) */
[data-theme="cyan"]   { --primary:#4f9dff; --accent:#00f5ff; --glow-primary:rgba(79,157,255,.35); --glow-accent:rgba(0,245,255,.28); }
[data-theme="violet"] { --primary:#8b5cf6; --accent:#c084fc; --glow-primary:rgba(139,92,246,.38); --glow-accent:rgba(192,132,252,.3); }
[data-theme="ember"]  { --primary:#ff7849; --accent:#ffb347; --glow-primary:rgba(255,120,73,.35); --glow-accent:rgba(255,179,71,.28); }
[data-theme="matrix"] { --primary:#22c55e; --accent:#7cffb2; --glow-primary:rgba(34,197,94,.35); --glow-accent:rgba(124,255,178,.28); }

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-h) + 16px); }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--primary); color: #04060f; }

::-webkit-scrollbar { width: 9px; background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--bg-3); border-radius: 8px; border: 2px solid var(--bg); }
::-webkit-scrollbar-thumb:hover { background: var(--primary); }

a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--accent); }
strong { color: var(--text); font-weight: 600; }
kbd {
  font-family: var(--font-mono); font-size: 11px; color: var(--text-dim);
  background: rgba(148,170,255,.08); border: 1px solid var(--line);
  border-radius: 5px; padding: 2px 6px;
}
img { max-width: 100%; display: block; }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }

.glass {
  background: var(--glass);
  border: 1px solid var(--line);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-radius: 18px;
}

/* ============ CURSOR ============ */
#cursorDot, #cursorGlow {
  position: fixed; top: 0; left: 0; pointer-events: none; z-index: 9999;
  border-radius: 50%; transform: translate(-50%, -50%);
  opacity: 0; transition: opacity .3s;
}
#cursorDot { width: 6px; height: 6px; background: var(--accent); }
#cursorGlow {
  width: 34px; height: 34px;
  border: 1.5px solid color-mix(in srgb, var(--accent) 55%, transparent);
  box-shadow: 0 0 24px var(--glow-accent);
  transition: opacity .3s, width .25s var(--ease-out), height .25s var(--ease-out), border-color .25s;
}
body.cursor-on #cursorDot, body.cursor-on #cursorGlow { opacity: 1; }
body.cursor-hover #cursorGlow { width: 52px; height: 52px; border-color: var(--accent); }
@media (hover: none), (pointer: coarse) { #cursorDot, #cursorGlow { display: none; } }

/* ============ BOOT ============ */
#boot {
  position: fixed; inset: 0; z-index: 10000;
  background: var(--bg);
  display: grid; place-items: center;
  transition: opacity .6s var(--ease-out), visibility .6s;
}
#boot.done { opacity: 0; visibility: hidden; }
.boot-inner { width: min(560px, 86vw); }
.boot-log {
  font-family: var(--font-mono); font-size: 12.5px; line-height: 1.8;
  color: var(--text-dim); min-height: 168px; white-space: pre-wrap;
}
.boot-log .ok { color: var(--green); }
.boot-log .sys { color: var(--primary); }
.boot-bar {
  height: 3px; background: var(--bg-3); border-radius: 3px; overflow: hidden; margin-top: 18px;
}
#bootBarFill {
  display: block; height: 100%; width: 0%;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  box-shadow: 0 0 12px var(--glow-accent);
  transition: width .2s linear;
}
.boot-hint {
  margin-top: 12px; font-family: var(--font-mono); font-size: 11px;
  color: var(--text-mute); letter-spacing: .12em; text-transform: uppercase;
}

/* ============ SCROLL PROGRESS ============ */
#scrollProgress {
  position: fixed; top: 0; left: 0; height: 2px; width: 0%;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  box-shadow: 0 0 10px var(--glow-accent);
  z-index: 1001;
}

/* ============ NAV ============ */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  height: var(--nav-h);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 clamp(16px, 4vw, 40px);
  transition: background .4s, border-color .4s, backdrop-filter .4s;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(5, 8, 22, 0.72);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom-color: var(--line);
}
.nav-logo { display: flex; align-items: center; }
.logo-mark {
  font-family: var(--font-mono); font-weight: 600; font-size: 20px; color: var(--text);
  text-shadow: 0 0 18px var(--glow-primary);
}
.logo-cursor { color: var(--accent); animation: blink 1.1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }

.nav-links { display: flex; gap: 4px; }
.nav-links a {
  position: relative; color: var(--text-dim); font-size: 13.5px; font-weight: 500;
  padding: 8px 12px; border-radius: 8px;
  transition: color .25s;
}
.nav-links a::after {
  content: ""; position: absolute; left: 12px; right: 12px; bottom: 4px; height: 1.5px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transform: scaleX(0); transform-origin: left;
  transition: transform .3s var(--ease-out);
}
.nav-links a:hover { color: var(--text); }
.nav-links a:hover::after, .nav-links a.active::after { transform: scaleX(1); }
.nav-links a.active { color: var(--text); }
.nav-cta { color: var(--accent) !important; }

.nav-tools { display: flex; align-items: center; gap: 8px; }
.icon-btn {
  width: 32px; height: 32px; display: grid; place-items: center;
  border: 1px solid var(--line); border-radius: 8px; color: var(--text-dim);
  transition: color .25s, border-color .25s, box-shadow .25s, transform .2s var(--ease-spring);
}
.icon-btn:hover { color: var(--accent); border-color: var(--accent); box-shadow: 0 0 14px var(--glow-accent); transform: translateY(-1px); }
.accent-dot {
  width: 12px; height: 12px; border-radius: 50%;
  background: conic-gradient(var(--primary), var(--accent), var(--purple), var(--primary));
  box-shadow: 0 0 10px var(--glow-primary);
}
#soundBtn.on { color: var(--accent); border-color: var(--accent); }
#soundBtn:not(.on) .snd-wave { opacity: .25; }
.kbd-hint {
  font-family: var(--font-mono); font-size: 11.5px; color: var(--text-dim);
  border: 1px solid var(--line); border-radius: 8px; padding: 7px 10px;
  transition: color .25s, border-color .25s, box-shadow .25s;
}
.kbd-hint:hover { color: var(--accent); border-color: var(--accent); box-shadow: 0 0 14px var(--glow-accent); }

.menu-btn { display: none; flex-direction: column; gap: 5px; }
.menu-btn span { width: 16px; height: 1.5px; background: currentColor; transition: transform .3s var(--ease-out); }
body.menu-open .menu-btn span:first-child { transform: translateY(3.25px) rotate(45deg); }
body.menu-open .menu-btn span:last-child { transform: translateY(-3.25px) rotate(-45deg); }

.mobile-menu {
  position: fixed; inset: var(--nav-h) 0 auto 0; z-index: 999;
  background: rgba(5, 8, 22, 0.95); backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--line);
  display: grid; gap: 2px; padding: 12px clamp(16px, 4vw, 40px) 20px;
  transform: translateY(-110%); transition: transform .4s var(--ease-out);
}
body.menu-open .mobile-menu { transform: translateY(0); }
.mobile-menu a { color: var(--text-dim); font-size: 15px; padding: 10px 4px; border-bottom: 1px solid rgba(148,170,255,.06); }

/* ============ COMMAND PALETTE ============ */
.palette[hidden] { display: none; }
.palette {
  position: fixed; inset: 0; z-index: 5000;
  background: rgba(3, 5, 14, 0.6); backdrop-filter: blur(6px);
  display: grid; place-items: start center; padding-top: 14vh;
  opacity: 0; transition: opacity .2s;
}
.palette.open { opacity: 1; }
.palette-panel {
  width: min(560px, 92vw); overflow: hidden;
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.6), 0 0 0 1px var(--line), 0 0 60px var(--glow-primary);
  transform: translateY(8px) scale(.98); transition: transform .25s var(--ease-spring);
}
.palette.open .palette-panel { transform: translateY(0) scale(1); }
.palette-head {
  display: flex; align-items: center; gap: 10px;
  padding: 14px 16px; border-bottom: 1px solid var(--line); color: var(--text-mute);
}
.palette-head input {
  flex: 1; background: none; border: none; outline: none;
  color: var(--text); font: 500 15px var(--font-body);
}
.palette-list { list-style: none; max-height: 320px; overflow-y: auto; padding: 6px; }
.palette-list li {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 12px; border-radius: 10px; cursor: pointer;
  color: var(--text-dim); font-size: 14px;
  transition: background .15s, color .15s;
}
.palette-list li .pi-ico { font-family: var(--font-mono); font-size: 12px; color: var(--text-mute); width: 20px; text-align: center; }
.palette-list li .pi-k { margin-left: auto; font-family: var(--font-mono); font-size: 11px; color: var(--text-mute); }
.palette-list li.sel, .palette-list li:hover {
  background: color-mix(in srgb, var(--primary) 14%, transparent); color: var(--text);
}
.palette-list li.sel .pi-ico { color: var(--accent); }
.palette-foot {
  padding: 8px 14px; border-top: 1px solid var(--line);
  font-size: 11px; color: var(--text-mute); display: flex; gap: 14px;
}

/* ============ HERO ============ */
.hero {
  position: relative; min-height: 100svh;
  display: grid; place-items: center;
  overflow: hidden; padding: calc(var(--nav-h) + 24px) clamp(16px, 5vw, 48px) 60px;
}
.hero-canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
#rainCanvas { opacity: .5; }

.hero-orbs { position: absolute; inset: 0; filter: blur(70px); }
.orb { position: absolute; border-radius: 50%; opacity: .5; will-change: transform; }
.orb-a { width: 44vw; height: 44vw; left: -10vw; top: -8vw; background: radial-gradient(circle, var(--primary), transparent 65%); animation: drift 26s ease-in-out infinite alternate; }
.orb-b { width: 36vw; height: 36vw; right: -8vw; bottom: -6vw; background: radial-gradient(circle, var(--purple), transparent 65%); animation: drift 32s ease-in-out infinite alternate-reverse; }
.orb-c { width: 22vw; height: 22vw; right: 18vw; top: 12vh; background: radial-gradient(circle, var(--accent), transparent 60%); opacity: .28; animation: drift 22s ease-in-out infinite alternate; }
@keyframes drift {
  from { transform: translate3d(0, 0, 0) scale(1); }
  to   { transform: translate3d(6vw, 4vh, 0) scale(1.12); }
}

.hero-grid {
  position: absolute; inset: -2px;
  background-image:
    linear-gradient(rgba(148,170,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148,170,255,.05) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 75% 60% at 50% 45%, black 20%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 75% 60% at 50% 45%, black 20%, transparent 75%);
}

.float-snippets { position: absolute; inset: 0; pointer-events: none; }
.snippet {
  position: absolute; font-family: var(--font-mono); font-size: 11.5px;
  color: var(--text-mute); padding: 8px 14px;
  background: rgba(10, 15, 36, 0.55); border: 1px solid var(--line); border-radius: 10px;
  backdrop-filter: blur(4px);
  animation: floaty 9s ease-in-out infinite;
  box-shadow: 0 8px 30px rgba(0,0,0,.35);
  will-change: transform;
}
.snippet .tk { color: var(--purple); } .snippet .tf { color: var(--primary); }
.snippet .tn { color: var(--accent); } .snippet .tc { color: var(--green); }
.s1 { top: 20%; left: 6%; animation-delay: 0s; }
.s2 { top: 68%; left: 10%; animation-delay: -3s; }
.s3 { top: 26%; right: 6%; animation-delay: -5s; }
.s4 { top: 72%; right: 9%; animation-delay: -7s; }
@keyframes floaty {
  0%, 100% { transform: translateY(0) rotate(-.4deg); }
  50% { transform: translateY(-16px) rotate(.4deg); }
}
@media (max-width: 900px) { .snippet { display: none; } }

.hero-content { position: relative; text-align: center; max-width: 900px; z-index: 2; }
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono); font-size: 12px; letter-spacing: .08em;
  color: var(--text-dim); border: 1px solid var(--line); border-radius: 999px;
  padding: 6px 14px; margin-bottom: 26px;
  background: rgba(10,15,36,.5);
}
.pulse-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 0 rgba(34,197,94,.5); animation: pulse 2.2s infinite; }
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(34,197,94,.5); }
  70% { box-shadow: 0 0 0 9px rgba(34,197,94,0); }
  100% { box-shadow: 0 0 0 0 rgba(34,197,94,0); }
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(30px, 5.6vw, 64px);
  font-weight: 700; line-height: 1.14; letter-spacing: -0.02em;
}
.hero-title .line { display: block; }
.grad-text {
  background: linear-gradient(100deg, var(--primary), var(--accent) 60%, var(--purple));
  -webkit-background-clip: text; background-clip: text; color: transparent;
  background-size: 200% 100%;
  animation: gradShift 7s ease-in-out infinite alternate;
}
@keyframes gradShift { from { background-position: 0% 0; } to { background-position: 100% 0; } }
.hl   { color: var(--primary); text-shadow: 0 0 34px var(--glow-primary); }
.hl-2 { color: var(--purple); text-shadow: 0 0 34px rgba(139,92,246,.4); }
.hl-3 { color: var(--accent); text-shadow: 0 0 34px var(--glow-accent); }

.hero-type {
  margin-top: 26px; font-family: var(--font-mono); font-size: clamp(14px, 2vw, 17px);
  color: var(--text-dim);
}
.typed { color: var(--accent); }
.caret {
  display: inline-block; width: 9px; height: 1.05em; margin-left: 3px;
  background: var(--accent); vertical-align: text-bottom;
  animation: blink 1s steps(1) infinite;
  box-shadow: 0 0 8px var(--glow-accent);
}

.hero-ctas { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; margin-top: 36px; }
.hero-meta { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-top: 30px; }
.meta-chip {
  font-family: var(--font-mono); font-size: 11.5px; color: var(--text-mute);
  border: 1px solid var(--line); border-radius: 999px; padding: 5px 12px;
}

/* buttons */
.btn {
  position: relative; display: inline-flex; align-items: center; gap: 9px;
  font-weight: 600; font-size: 14.5px; border-radius: 12px;
  padding: 13px 26px; cursor: pointer; overflow: hidden;
  transition: transform .25s var(--ease-spring), box-shadow .3s, border-color .3s, color .3s;
  will-change: transform;
}
.btn-primary {
  color: #030614;
  background: linear-gradient(120deg, var(--primary), var(--accent));
  box-shadow: 0 4px 26px var(--glow-primary);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 40px var(--glow-accent); color: #030614; }
.btn-primary::before {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(110deg, transparent 35%, rgba(255,255,255,.5) 50%, transparent 65%);
  transform: translateX(-120%); transition: transform .7s var(--ease-out);
}
.btn-primary:hover::before { transform: translateX(120%); }
.btn-ghost {
  color: var(--text); border: 1px solid var(--line); background: rgba(10,15,36,.4);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); box-shadow: 0 0 22px var(--glow-accent); transform: translateY(-2px); }
.btn-kbd kbd { margin-left: 2px; }
.btn-mini { padding: 9px 16px; font-size: 12.5px; border-radius: 9px; }
.btn-full { width: 100%; justify-content: center; }

.scroll-cue { position: absolute; bottom: 26px; left: 50%; transform: translateX(-50%); opacity: .55; transition: opacity .3s; }
.scroll-cue:hover { opacity: 1; }
.mouse { display: block; width: 22px; height: 34px; border: 1.5px solid var(--text-dim); border-radius: 12px; position: relative; }
.wheel { position: absolute; left: 50%; top: 6px; width: 3px; height: 7px; margin-left: -1.5px; border-radius: 3px; background: var(--accent); animation: wheel 1.8s ease-in-out infinite; }
@keyframes wheel { 0% { transform: translateY(0); opacity: 1; } 70% { transform: translateY(11px); opacity: 0; } 100% { opacity: 0; } }

/* ============ SECTIONS ============ */
.section { position: relative; padding: clamp(80px, 12vh, 140px) clamp(16px, 6vw, 72px); max-width: 1280px; margin: 0 auto; }
.section-head { margin-bottom: clamp(36px, 6vh, 64px); }
.section-kicker {
  font-family: var(--font-mono); font-size: 12px; letter-spacing: .18em;
  text-transform: uppercase; color: var(--accent); margin-bottom: 12px;
}
.section-kicker::before { content: "// "; color: var(--text-mute); }
.section-title {
  font-family: var(--font-display); font-weight: 700;
  font-size: clamp(28px, 4.4vw, 48px); line-height: 1.12; letter-spacing: -0.02em;
}
.section-sub { color: var(--text-dim); margin-top: 14px; max-width: 560px; }
.mini-title { font-family: var(--font-mono); font-size: 12px; color: var(--text-mute); letter-spacing: .06em; margin-bottom: 16px; }

/* scroll reveal */
.reveal, .io {
  opacity: 0; transform: translateY(26px);
  transition: opacity .7s var(--ease-out), transform .7s var(--ease-out);
}
.reveal.in, .io.in { opacity: 1; transform: none; }
.d1 { transition-delay: .08s; } .d2 { transition-delay: .16s; }
.d3 { transition-delay: .24s; } .d4 { transition-delay: .32s; } .d5 { transition-delay: .4s; }

/* ============ ABOUT ============ */
.about-grid {
  display: grid; grid-template-columns: minmax(280px, 360px) 1fr;
  gap: clamp(28px, 5vw, 64px); align-items: start;
}
.about-radar { grid-column: 1; }
.about-copy { grid-row: span 2; }
.about-copy p { color: var(--text-dim); margin-bottom: 16px; }

.about-visual { position: relative; display: grid; place-items: center; padding: 30px 0 10px; }
.orbit-wrap { position: relative; width: 300px; height: 300px; display: grid; place-items: center; }
.orbit-ring { position: absolute; border: 1px dashed rgba(148,170,255,.18); border-radius: 50%; }
.r1 { inset: 8px; animation: spin 40s linear infinite; }
.r2 { inset: -28px; animation: spin 60s linear infinite reverse; }
@keyframes spin { to { transform: rotate(360deg); } }

.pfp-frame {
  position: relative; width: 210px; height: 210px; border-radius: 50%;
  overflow: hidden; border: 2px solid color-mix(in srgb, var(--primary) 50%, transparent);
  box-shadow: 0 0 44px var(--glow-primary), inset 0 0 30px rgba(0,0,0,.4);
}
.pfp-frame img { width: 100%; height: 100%; object-fit: cover; }
.pfp-scan {
  position: absolute; inset: 0;
  background: linear-gradient(to bottom, transparent 46%, var(--glow-accent) 50%, transparent 54%);
  animation: scan 4.5s ease-in-out infinite; mix-blend-mode: screen;
}
@keyframes scan { 0%,100% { transform: translateY(-45%);} 50% { transform: translateY(45%);} }

.orbiter {
  position: absolute; left: 50%; top: 50%;
  width: 42px; height: 42px; margin: -21px;
  display: grid; place-items: center;
  background: var(--bg-2); border: 1px solid var(--line); border-radius: 50%;
  box-shadow: 0 0 16px rgba(0,0,0,.5);
  animation: orbit 20s linear infinite;
}
.orbiter img { width: 22px; height: 22px; }
.orbiter.o2 { animation-duration: 30s; animation-direction: reverse; width: 38px; height: 38px; margin: -19px; }
@keyframes orbit {
  from { transform: rotate(var(--ang)) translateX(146px) rotate(calc(-1 * var(--ang))); }
  to   { transform: rotate(calc(var(--ang) + 360deg)) translateX(146px) rotate(calc(-1 * (var(--ang) + 360deg))); }
}
.orbiter.o2 { --r: 178px; }
@media (min-width: 0px) {
  .orbiter.o1 { animation-name: orbit1; }
  .orbiter.o2 { animation-name: orbit2; }
  @keyframes orbit1 {
    from { transform: rotate(var(--ang)) translateX(146px) rotate(calc(-1 * var(--ang))); }
    to   { transform: rotate(calc(var(--ang) + 360deg)) translateX(146px) rotate(calc(-1 * var(--ang) - 360deg)); }
  }
  @keyframes orbit2 {
    from { transform: rotate(var(--ang)) translateX(178px) rotate(calc(-1 * var(--ang))); }
    to   { transform: rotate(calc(var(--ang) + 360deg)) translateX(178px) rotate(calc(-1 * var(--ang) - 360deg)); }
  }
}
#sphereCanvas { margin-top: 26px; opacity: .8; }

.stat-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: 14px; margin-top: 30px; }
.stat {
  border: 1px solid var(--line); border-radius: 14px; padding: 16px 14px;
  background: rgba(10,15,36,.4); text-align: center;
  transition: transform .3s var(--ease-spring), border-color .3s, box-shadow .3s;
}
.stat:hover { transform: translateY(-3px); border-color: var(--primary); box-shadow: 0 8px 30px var(--glow-primary); }
.stat-num {
  display: block; font-family: var(--font-display); font-weight: 700;
  font-size: 26px; color: var(--accent); text-shadow: 0 0 20px var(--glow-accent);
}
.stat-label { font-size: 12px; color: var(--text-mute); }

#radarCanvas { width: 100%; max-width: 360px; height: auto; }

/* ============ SKILLS ============ */
.skills { overflow: hidden; }
.circuit-bg {
  position: absolute; inset: 0; opacity: .35; pointer-events: none;
  background-image:
    radial-gradient(circle at 2px 2px, rgba(148,170,255,.14) 1.5px, transparent 1.5px),
    linear-gradient(rgba(148,170,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148,170,255,.05) 1px, transparent 1px);
  background-size: 90px 90px, 90px 90px, 90px 90px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, black, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, black, transparent 80%);
}
.skills-grid {
  position: relative;
  display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 18px;
}
.skill-card {
  --tint: var(--primary);
  position: relative; border-radius: 16px; padding: 24px;
  background: linear-gradient(var(--bg-2), var(--bg-2)) padding-box,
              linear-gradient(140deg, color-mix(in srgb, var(--tint) 55%, transparent), transparent 45%, color-mix(in srgb, var(--tint) 25%, transparent)) border-box;
  border: 1px solid transparent;
  transition: transform .35s var(--ease-spring), box-shadow .35s;
}
.skill-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 16px 44px color-mix(in srgb, var(--tint) 22%, transparent);
}
.skill-head { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.skill-icon {
  width: 38px; height: 38px; display: grid; place-items: center; font-size: 17px;
  color: var(--tint); border: 1px solid color-mix(in srgb, var(--tint) 40%, transparent);
  border-radius: 10px; background: color-mix(in srgb, var(--tint) 9%, transparent);
  text-shadow: 0 0 14px var(--tint);
}
.skill-head h3 { font-family: var(--font-display); font-size: 18px; }
.skill-card ul { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; }
.skill-card li {
  font-family: var(--font-mono); font-size: 12px; color: var(--text-dim);
  border: 1px solid var(--line); padding: 4px 10px; border-radius: 999px;
  transition: color .25s, border-color .25s, background .25s;
}
.skill-card li:hover { color: var(--tint); border-color: var(--tint); background: color-mix(in srgb, var(--tint) 8%, transparent); }
.skill-bar { height: 4px; border-radius: 4px; background: rgba(148,170,255,.1); overflow: hidden; }
.skill-bar span {
  display: block; height: 100%; width: 0;
  background: linear-gradient(90deg, var(--tint), color-mix(in srgb, var(--tint) 40%, white));
  border-radius: 4px; box-shadow: 0 0 10px var(--tint);
  transition: width 1.1s var(--ease-out) .2s;
}
.io.in .skill-bar span { width: var(--w); }

/* ============ PROJECTS ============ */
.project-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 22px; }
.project-card {
  position: relative; border-radius: 18px; overflow: hidden;
  background: var(--bg-2); border: 1px solid var(--line);
  transform-style: preserve-3d; will-change: transform;
  transition: border-color .3s, box-shadow .4s;
}
.project-card:hover { border-color: color-mix(in srgb, var(--primary) 45%, transparent); box-shadow: 0 24px 60px rgba(0,0,0,.5), 0 0 40px var(--glow-primary); }
.pc-glow {
  position: absolute; inset: 0; pointer-events: none; opacity: 0; z-index: 1;
  background: radial-gradient(300px circle at var(--mx, 50%) var(--my, 50%), color-mix(in srgb, var(--accent) 10%, transparent), transparent 65%);
  transition: opacity .3s;
}
.project-card:hover .pc-glow { opacity: 1; }
.pc-media { height: 150px; border-bottom: 1px solid var(--line); background: linear-gradient(160deg, var(--bg-3), var(--bg-2)); overflow: hidden; }
.pc-art { position: relative; width: 100%; height: 100%; }
.pc-body { padding: 20px 22px 22px; position: relative; z-index: 2; }
.pc-top { display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap; }
.pc-top h3 { font-family: var(--font-display); font-size: 18.5px; }
.tag {
  font-family: var(--font-mono); font-size: 10.5px; letter-spacing: .04em;
  color: var(--text-dim); border: 1px solid var(--line); border-radius: 999px; padding: 3px 10px;
  white-space: nowrap;
}
.tag-live { color: var(--green); border-color: color-mix(in srgb, var(--green) 45%, transparent); }
.tag-wip { color: var(--accent); border-color: color-mix(in srgb, var(--accent) 45%, transparent); }
.tag-win { color: #f4d35e; border-color: rgba(244,211,94,.4); }
.pc-stack { font-family: var(--font-mono); font-size: 11.5px; color: var(--primary); margin: 8px 0 10px; }
.pc-body > p:not(.pc-stack) { font-size: 14px; color: var(--text-dim); }
.pc-actions { display: flex; gap: 10px; margin-top: 16px; }

/* project card mini-art */
.art-deskpet .pixel-cat {
  position: absolute; left: 46%; bottom: 26px; width: 34px; height: 26px;
  background: var(--accent);
  clip-path: polygon(0 35%, 15% 35%, 15% 0, 30% 20%, 70% 20%, 85% 0, 85% 35%, 100% 35%, 100% 100%, 0 100%);
  box-shadow: 0 0 20px var(--glow-accent);
  animation: catwalk 5s ease-in-out infinite alternate;
}
@keyframes catwalk { from { transform: translateX(-70px);} to { transform: translateX(70px);} }
.art-win { position: absolute; left: 14%; top: 22px; width: 90px; height: 54px; border: 1px solid var(--line); border-radius: 6px; background: rgba(148,170,255,.05); }
.art-win.w2 { left: auto; right: 12%; top: 34px; width: 74px; height: 44px; }
.art-conduit .cq { position: absolute; top: 44%; width: 34px; height: 34px; border: 1px solid var(--primary); border-radius: 8px; background: color-mix(in srgb, var(--primary) 8%, transparent); }
.cq.q1 { left: 12%; } .cq.q2 { left: 45%; animation: qpulse 2s infinite; } .cq.q3 { right: 12%; }
@keyframes qpulse { 50% { box-shadow: 0 0 18px var(--glow-primary); border-color: var(--accent); } }
.cflow { position: absolute; top: calc(44% + 15px); width: 8px; height: 4px; border-radius: 4px; background: var(--accent); box-shadow: 0 0 10px var(--glow-accent); }
.cflow.f1 { animation: flow1 2.4s linear infinite; }
.cflow.f2 { animation: flow2 2.4s linear infinite 1.2s; }
@keyframes flow1 { from { left: calc(12% + 36px); opacity: 1;} to { left: 45%; opacity: .3;} }
@keyframes flow2 { from { left: calc(45% + 36px); opacity: 1;} to { left: 86%; opacity: .3;} }
.art-reimb .state-node {
  position: absolute; top: 40%; font-family: var(--font-mono); font-size: 9.5px;
  padding: 6px 9px; border: 1px solid var(--line); border-radius: 6px; color: var(--text-dim);
  background: var(--bg-2);
}
.state-node.n1 { left: 8%; color: var(--primary); border-color: color-mix(in srgb, var(--primary) 45%, transparent); }
.state-node.n2 { left: 38%; animation: statehl 3.6s infinite 1.2s; }
.state-node.n3 { right: 8%; animation: statehl 3.6s infinite 2.4s; }
@keyframes statehl { 0%, 20%, 100% { color: var(--text-dim); } 10% { color: var(--green); border-color: var(--green); box-shadow: 0 0 14px rgba(34,197,94,.35); } }
.state-path { position: absolute; left: 0; top: 8%; width: 100%; height: 60px; }
.state-path path { stroke: var(--line); stroke-width: 1.5; fill: none; stroke-dasharray: 6 8; animation: dashmove 1.4s linear infinite; }
@keyframes dashmove { to { stroke-dashoffset: -14; } }
.art-cdk .stack-layer {
  position: absolute; left: 50%; transform: translateX(-50%);
  font-family: var(--font-mono); font-size: 10px; color: var(--text-dim);
  border: 1px solid var(--line); border-radius: 7px; padding: 5px 16px; background: var(--bg-2);
}
.stack-layer.l1 { top: 18px; color: var(--accent); border-color: color-mix(in srgb, var(--accent) 40%, transparent); }
.stack-layer.l2 { top: 56px; width: 150px; text-align: center; }
.stack-layer.l3 { top: 94px; width: 190px; text-align: center; color: var(--green); animation: deployblink 3s infinite; }
@keyframes deployblink { 0%, 88%, 100% { opacity: 1; } 94% { opacity: .35; } }
.art-payslip .doc-sheet {
  position: absolute; left: 16%; top: 24px; width: 66px; height: 88px;
  background: rgba(148,170,255,.07); border: 1px solid var(--line); border-radius: 5px;
}
.doc-sheet::before, .doc-sheet::after {
  content: ""; position: absolute; left: 9px; right: 9px; height: 4px; border-radius: 3px;
  background: rgba(148,170,255,.2);
}
.doc-sheet::before { top: 12px; } .doc-sheet::after { top: 24px; width: 60%; }
.doc-beam {
  position: absolute; left: calc(16% + 70px); top: 62px; height: 2px; width: 24%;
  background: linear-gradient(90deg, var(--accent), transparent);
  animation: beam 1.8s ease-in-out infinite;
}
@keyframes beam { 0%,100% { opacity: .25; } 50% { opacity: 1; } }
.doc-json {
  position: absolute; right: 10%; top: 52px; font-family: var(--font-mono); font-size: 11px;
  color: var(--green); border: 1px solid color-mix(in srgb, var(--green) 40%, transparent);
  padding: 7px 11px; border-radius: 7px; background: var(--bg-2);
}
.art-andi .chat-bub {
  position: absolute; font-family: var(--font-mono); font-size: 11px;
  padding: 8px 13px; border-radius: 12px; border: 1px solid var(--line);
}
.chat-bub.b1 { left: 12%; top: 30px; color: var(--text-dim); border-bottom-left-radius: 3px; background: var(--bg-2); }
.chat-bub.b2 { right: 12%; top: 76px; color: var(--accent); border-bottom-right-radius: 3px; background: color-mix(in srgb, var(--accent) 7%, transparent); animation: beam 2s infinite; }

/* ============ EXPERIENCE / TIMELINE ============ */
.timeline { position: relative; max-width: 780px; margin: 0 auto; padding-left: 34px; }
.tl-rail {
  position: absolute; left: 8px; top: 6px; bottom: 6px; width: 2px;
  background: rgba(148,170,255,.12); border-radius: 2px; overflow: hidden;
}
#tlFill {
  display: block; width: 100%; height: 0%;
  background: linear-gradient(var(--primary), var(--accent));
  box-shadow: 0 0 12px var(--glow-primary);
}
.tl-item { position: relative; margin-bottom: 18px; border: 1px solid var(--line); border-radius: 16px; background: rgba(10,15,36,.45); overflow: hidden; transition: border-color .3s, box-shadow .3s; }
.tl-item:hover { border-color: color-mix(in srgb, var(--primary) 40%, transparent); box-shadow: 0 10px 36px rgba(0,0,0,.35); }
.tl-head {
  display: flex; align-items: center; gap: 16px; width: 100%; text-align: left;
  padding: 20px 22px;
}
.tl-head h3 { font-family: var(--font-display); font-size: 17px; }
.tl-org { color: var(--primary); font-weight: 500; }
.tl-period { font-family: var(--font-mono); font-size: 12px; color: var(--text-mute); margin-top: 3px; }
.tl-dot {
  position: absolute; left: -34px; top: 30px;
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--bg); border: 2.5px solid var(--primary);
  box-shadow: 0 0 14px var(--glow-primary);
}
.tl-dot-award { border-color: #f4d35e; box-shadow: 0 0 14px rgba(244,211,94,.4); }
.tl-chev { margin-left: auto; color: var(--text-mute); transition: transform .35s var(--ease-spring), color .3s; }
.tl-item.open .tl-chev { transform: rotate(180deg); color: var(--accent); }
.tl-body {
  display: grid; grid-template-rows: 0fr; transition: grid-template-rows .5s var(--ease-out);
}
.tl-item.open .tl-body { grid-template-rows: 1fr; }
.tl-body > * { overflow: hidden; }
.tl-list { list-style: none; padding: 0 22px; }
.tl-list li {
  position: relative; padding: 7px 0 7px 22px; color: var(--text-dim); font-size: 14.5px;
}
.tl-list li::before { content: "▹"; position: absolute; left: 0; color: var(--accent); }
.tl-list.awards li::before { content: "✦"; color: #f4d35e; }
.tl-tech { display: flex; flex-wrap: wrap; gap: 8px; padding: 14px 22px 4px; }
.tl-tech span {
  font-family: var(--font-mono); font-size: 11px; color: var(--text-dim);
  border: 1px solid var(--line); border-radius: 999px; padding: 3px 10px;
}
.tl-metrics { display: grid; grid-template-columns: repeat(auto-fit, minmax(110px, 1fr)); gap: 10px; padding: 16px 22px 22px; }
.tl-metrics div {
  text-align: center; border: 1px solid var(--line); border-radius: 10px; padding: 10px 6px;
  font-size: 11px; color: var(--text-mute);
}
.tl-metrics em {
  display: block; font-style: normal; font-family: var(--font-display); font-weight: 700;
  font-size: 20px; color: var(--green); text-shadow: 0 0 16px rgba(34,197,94,.35);
}
.tl-item .tl-body .tl-list { padding-top: 6px; }

/* ============ SYSTEMS ============ */
.sys-tabs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 20px; }
.sys-tab {
  font-family: var(--font-mono); font-size: 12.5px; color: var(--text-dim);
  border: 1px solid var(--line); border-radius: 999px; padding: 8px 18px;
  transition: all .3s var(--ease-out);
}
.sys-tab:hover { color: var(--text); border-color: var(--primary); }
.sys-tab.active {
  color: #04060f; background: linear-gradient(110deg, var(--primary), var(--accent));
  border-color: transparent; box-shadow: 0 4px 20px var(--glow-primary); font-weight: 600;
}
.sys-stage { display: grid; grid-template-columns: 1fr 260px; min-height: 380px; overflow: hidden; }
.diagram-host { padding: 18px; display: grid; place-items: center; }
.diagram-host svg { width: 100%; height: auto; max-height: 400px; }
.node-info {
  border-left: 1px solid var(--line); padding: 22px;
  display: flex; flex-direction: column; justify-content: center; gap: 8px;
}
.ni-hint { font-family: var(--font-mono); font-size: 11.5px; color: var(--text-mute); letter-spacing: .06em; }
#niTitle { font-family: var(--font-display); font-size: 17px; color: var(--accent); min-height: 0; }
#niDesc { font-size: 13.5px; color: var(--text-dim); }

/* diagram svg internals */
.dg-node { cursor: pointer; }
.dg-node rect, .dg-node circle {
  fill: rgba(16,23,53,.85); stroke: rgba(148,170,255,.3); stroke-width: 1.2;
  transition: stroke .25s, filter .25s;
}
.dg-node text { fill: #b9c4e8; font: 500 10.5px "JetBrains Mono", monospace; text-anchor: middle; pointer-events: none; }
.dg-node:hover rect, .dg-node:hover circle, .dg-node.sel rect, .dg-node.sel circle {
  stroke: var(--accent); filter: drop-shadow(0 0 8px var(--glow-accent));
}
.dg-node.sel text { fill: var(--accent); }
.dg-link { stroke: rgba(148,170,255,.22); stroke-width: 1.3; fill: none; }
.dg-packet { fill: var(--accent); filter: drop-shadow(0 0 5px var(--glow-accent)); }
.dg-packet.p2 { fill: var(--purple); }
.dg-packet.p3 { fill: var(--green); }
.dg-label { fill: #5a6890; font: 9.5px "JetBrains Mono", monospace; text-anchor: middle; }
.dg-pod circle { animation: podpop 5s infinite; transform-origin: center; transform-box: fill-box; }
@keyframes podpop { 0%, 12%, 88%, 100% { opacity: 0; transform: scale(.4);} 22%, 78% { opacity: 1; transform: scale(1);} }

/* ============ TERMINAL ============ */
.term { margin-top: 26px; overflow: hidden; }
.term-bar {
  display: flex; align-items: center; gap: 7px;
  padding: 11px 16px; border-bottom: 1px solid var(--line); background: rgba(10,15,36,.65);
}
.tdot { width: 11px; height: 11px; border-radius: 50%; }
.td-r { background: #ff5f57; } .td-y { background: #febc2e; } .td-g { background: #28c840; }
.term-title { margin-left: 10px; font-family: var(--font-mono); font-size: 11.5px; color: var(--text-mute); }
.term-screen {
  padding: 18px 20px; font-family: var(--font-mono); font-size: 13px; line-height: 1.75;
  min-height: 190px; max-height: 300px; overflow-y: auto; cursor: text; outline: none;
}
.term-screen:focus { box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--accent) 30%, transparent); border-radius: 0 0 18px 18px; }
#termOut { white-space: pre-wrap; word-break: break-word; color: var(--text-dim); }
#termOut .t-ok { color: var(--green); } #termOut .t-ac { color: var(--accent); }
#termOut .t-pm { color: var(--primary); } #termOut .t-err { color: #ff6b6b; }
#termOut .t-dim { color: var(--text-mute); }
.term-line { display: flex; align-items: center; }
.term-ps1 { color: var(--green); margin-right: 9px; }
.term-in { color: var(--text); white-space: pre; }
.term-caret { animation: blink 1s steps(1) infinite; }

/* ============ GITHUB ============ */
.gh-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 18px; }
.gh-card { padding: 24px; }
.gh-stats { display: flex; gap: 14px; margin-bottom: 20px; flex-wrap: wrap; }
.gh-stats .stat { flex: 1; min-width: 90px; }
#contribCanvas { width: 100%; height: 120px; }
.lang-bars { display: grid; gap: 12px; }
.lang { display: grid; grid-template-columns: 88px 1fr 40px; align-items: center; gap: 10px; font-size: 12.5px; }
.lang-name { font-family: var(--font-mono); color: var(--text-dim); }
.lang-pct { font-family: var(--font-mono); color: var(--text-mute); text-align: right; }
.lang-track { height: 6px; border-radius: 6px; background: rgba(148,170,255,.09); overflow: hidden; }
.lang-track span {
  display: block; height: 100%; width: 0; border-radius: 6px;
  background: var(--c); box-shadow: 0 0 8px color-mix(in srgb, var(--c) 60%, transparent);
  transition: width 1.2s var(--ease-out) .25s;
}
.io.in .lang-track span { width: var(--w); }

/* ============ CONTACT ============ */
.contact { overflow: hidden; }
.mesh-bg {
  position: absolute; inset: -20%; pointer-events: none; opacity: .5; filter: blur(80px);
  background:
    radial-gradient(38% 34% at 25% 30%, color-mix(in srgb, var(--primary) 24%, transparent), transparent),
    radial-gradient(32% 30% at 75% 60%, color-mix(in srgb, var(--purple) 22%, transparent), transparent),
    radial-gradient(26% 26% at 55% 25%, color-mix(in srgb, var(--accent) 14%, transparent), transparent);
  animation: meshdrift 18s ease-in-out infinite alternate;
}
@keyframes meshdrift { to { transform: translate3d(4%, -3%, 0) rotate(3deg) scale(1.06); } }
.contact-grid { position: relative; display: grid; grid-template-columns: 1.2fr .8fr; gap: 28px; align-items: start; }
.contact-form { padding: 30px; display: grid; gap: 22px; }
.field { position: relative; }
.field input, .field textarea {
  width: 100%; background: rgba(5,8,22,.5); border: 1px solid var(--line); border-radius: 12px;
  color: var(--text); font: 400 14.5px var(--font-body); padding: 15px 16px;
  outline: none; resize: vertical;
  transition: border-color .3s, box-shadow .3s;
}
.field label {
  position: absolute; left: 13px; top: 14px; padding: 0 5px;
  color: var(--text-mute); font-size: 14px; pointer-events: none;
  background: transparent; border-radius: 4px;
  transition: all .25s var(--ease-out);
}
.field input:focus, .field textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 18%, transparent); }
.field input:focus + label, .field textarea:focus + label,
.field input:not(:placeholder-shown) + label, .field textarea:not(:placeholder-shown) + label {
  top: -9px; font-size: 11.5px; color: var(--accent); background: var(--bg-2);
}
.field.err input, .field.err textarea { border-color: #ff6b6b; box-shadow: 0 0 0 3px rgba(255,107,107,.12); animation: shake .35s; }
.field.ok input, .field.ok textarea { border-color: var(--green); }
@keyframes shake { 25% { transform: translateX(-5px);} 75% { transform: translateX(5px);} }
.field-msg { display: block; min-height: 16px; font-size: 11.5px; color: #ff6b6b; margin-top: 5px; padding-left: 4px; opacity: 0; transform: translateY(-4px); transition: all .25s; }
.field.err .field-msg { opacity: 1; transform: none; }
.btn-sending, .btn-sent { display: none; }
form.sending .btn-label, form.sent .btn-label { display: none; }
form.sending .btn-sending { display: inline; }
form.sent .btn-sent { display: inline; }

.contact-side { display: grid; gap: 10px; align-content: start; }
.contact-line {
  display: flex; align-items: center; gap: 14px;
  font-family: var(--font-mono); font-size: 13.5px; color: var(--text-dim);
  border: 1px solid var(--line); border-radius: 12px; padding: 15px 18px;
  background: rgba(10,15,36,.4);
  transition: all .3s var(--ease-out);
}
.contact-line:hover { color: var(--accent); border-color: var(--accent); transform: translateX(5px); box-shadow: 0 6px 26px var(--glow-accent); }
.cl-k { color: var(--text-mute); font-size: 11px; min-width: 36px; }

/* ============ FOOTER ============ */
.footer {
  border-top: 1px solid var(--line); padding: 44px clamp(16px, 6vw, 72px) 36px;
  text-align: center;
}
.footer-type { font-family: var(--font-mono); font-size: 13px; color: var(--text-dim); min-height: 24px; }
.footer-socials { display: flex; justify-content: center; gap: 14px; margin: 22px 0; }
.footer-socials a {
  width: 40px; height: 40px; display: grid; place-items: center;
  color: var(--text-dim); border: 1px solid var(--line); border-radius: 11px;
  transition: all .3s var(--ease-spring);
}
.footer-socials a:hover {
  color: var(--accent); border-color: var(--accent);
  transform: translateY(-4px) rotate(-4deg); box-shadow: 0 8px 26px var(--glow-accent);
}
.footer-note { font-size: 12px; color: var(--text-mute); }
.footer-kbd kbd { font-size: 10px; }

/* ============ RESPONSIVE ============ */
@media (max-width: 1020px) {
  .about-grid { grid-template-columns: 1fr; }
  .about-copy { grid-row: auto; }
  .about-radar { grid-column: auto; justify-self: start; }
  .sys-stage { grid-template-columns: 1fr; }
  .node-info { border-left: none; border-top: 1px solid var(--line); min-height: 110px; }
}
@media (max-width: 820px) {
  .nav-links { display: none; }
  .menu-btn { display: flex; }
  .contact-grid { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .orbit-wrap { transform: scale(0.78); }
  .about-visual { padding: 0; }
  .hero-ctas .btn { padding: 12px 18px; font-size: 13.5px; }
}
@media (min-width: 821px) { .mobile-menu { display: none; } }

/* ============ REDUCED MOTION ============ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
  html { scroll-behavior: auto; }
  .reveal, .io { opacity: 1; transform: none; }
  #cursorDot, #cursorGlow { display: none; }
  .hero-canvas, #sphereCanvas { display: none; }
  .io .skill-bar span, .io .lang-track span { width: var(--w); }
  #boot { display: none; }
}