/* ═══════════════════════════════════════════════════════════
   HARSHIT BOHARA — PORTFOLIO
   Premium dark · lime accent · Inter + JetBrains Mono
   Zero frameworks · zero images · ~14KB
   ═══════════════════════════════════════════════════════════ */

/* ── 1. DESIGN SYSTEM ────────────────────────────────────── */
:root{
  --bg:#0a0a0a;
  --bg-surface:#141414;
  --bg-surface-hover:#1c1c1c;
  --text-primary:#fafafa;
  --text-secondary:#a1a1aa;
  --accent:#d4ff3f;
  --accent-dim:rgba(212,255,63,.1);
  --border:rgba(255,255,255,.08);
  --border-hover:rgba(255,255,255,.15);
  --radius:16px;
  --font-sans:'Inter',system-ui,-apple-system,'Segoe UI',sans-serif;
  --font-mono:'JetBrains Mono',ui-monospace,Consolas,monospace;
  --ease-out:cubic-bezier(.16,1,.3,1);
}

/* ── 2. RESET & BASE ─────────────────────────────────────── */
*,*::before,*::after{ box-sizing:border-box; margin:0; padding:0; }

html{ scroll-behavior:smooth; scroll-padding-top:90px; -webkit-text-size-adjust:100%; }

body{
  font-family:var(--font-sans);
  background:var(--bg);
  color:var(--text-primary);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

/* Subtle noise texture (pure CSS, no image) */
body::before{
  content:""; position:fixed; inset:0; pointer-events:none; z-index:50; opacity:.03;
  background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
}

a{ color:inherit; text-decoration:none; transition:color .2s ease; }
ul{ list-style:none; }
button,input,textarea{ font:inherit; color:inherit; }
img,svg{ display:block; }

::selection{ background:var(--accent); color:var(--bg); }
:focus-visible{ outline:2px solid var(--accent); outline-offset:4px; border-radius:4px; }

::-webkit-scrollbar{ width:10px; }
::-webkit-scrollbar-track{ background:var(--bg); }
::-webkit-scrollbar-thumb{ background:#2a2a2a; border-radius:8px; }
::-webkit-scrollbar-thumb:hover{ background:#3a3a3a; }

.skip-link{ position:absolute; left:-9999px; top:auto; width:1px; height:1px; overflow:hidden; }
.skip-link:focus{ position:fixed; left:16px; top:16px; width:auto; height:auto; z-index:100; background:var(--accent); color:var(--bg); padding:10px 18px; border-radius:8px; font-weight:700; }

.container{ width:100%; max-width:1160px; margin:0 auto; padding:0 24px; }
.section{ padding:110px 0; position:relative; }
.surface{ background:var(--bg-surface); border-top:1px solid var(--border); border-bottom:1px solid var(--border); }

/* ── 3. TYPOGRAPHY ───────────────────────────────────────── */
.text-display{
  font-size:clamp(2.6rem,7vw,5.2rem);
  font-weight:800; letter-spacing:-.04em; line-height:1.02;
}
.text-heading{ font-size:clamp(1.4rem,3vw,2rem); font-weight:700; letter-spacing:-.02em; }
.text-body{ font-size:1.06rem; color:var(--text-secondary); line-height:1.7; max-width:65ch; }
.text-mono{
  font-family:var(--font-mono); font-size:.78rem; letter-spacing:.06em;
  text-transform:uppercase; color:var(--accent); font-weight:500;
}
.dim{ color:var(--text-secondary); }

.section-intro{ margin-bottom:56px; }
.section-intro .text-mono{ display:block; margin-bottom:14px; }
.section-title{ font-size:clamp(1.8rem,4vw,2.6rem); margin-top:4px; }
.section-display{ font-size:clamp(2rem,4.5vw,3.4rem); margin-top:4px; }
.section-sub{ margin-top:20px; }

/* ── 4. GRIDS ────────────────────────────────────────────── */
.grid{ display:grid; gap:24px; }
.grid-2{ grid-template-columns:repeat(auto-fit,minmax(320px,1fr)); }
.grid-3{ grid-template-columns:repeat(auto-fit,minmax(280px,1fr)); }
.grid-4{ grid-template-columns:repeat(auto-fit,minmax(230px,1fr)); }

/* ── 5. COMPONENTS ───────────────────────────────────────── */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding:14px 28px; background:var(--accent); color:var(--bg);
  font-weight:700; font-size:.95rem; border-radius:999px; border:1px solid transparent;
  cursor:pointer; transition:all .3s var(--ease-out);
}
.btn:hover{ transform:translateY(-2px); box-shadow:0 10px 30px -10px rgba(212,255,63,.35); background:#e6ff9b; }
.btn svg{ width:17px; height:17px; }
.btn-full{ width:100%; }

.btn-outline{ background:transparent; color:var(--text-primary); border:1px solid var(--border); }
.btn-outline:hover{ border-color:var(--text-primary); background:var(--bg-surface-hover); box-shadow:none; }

.btn-icon{
  width:50px; height:50px; display:grid; place-items:center; border-radius:50%;
  border:1px solid var(--border); color:var(--text-secondary); transition:all .3s var(--ease-out);
}
.btn-icon:hover{ color:var(--bg); background:var(--accent); border-color:var(--accent); transform:translateY(-2px); }
.btn-icon svg{ width:20px; height:20px; }

.card{
  background:var(--bg-surface); border:1px solid var(--border); border-radius:var(--radius);
  padding:32px; transition:all .4s var(--ease-out); position:relative; overflow:hidden;
}
.surface .card{ background:var(--bg); }
.card::before{
  content:""; position:absolute; top:0; left:0; right:0; height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.2),transparent);
  opacity:0; transition:opacity .4s ease;
}
.card:hover{ transform:translateY(-4px); border-color:var(--border-hover); background:var(--bg-surface-hover); }
.card:hover::before{ opacity:1; }

.card-num{ font-size:2rem; font-weight:800; color:var(--border-hover); margin-bottom:16px; font-family:var(--font-mono); }
.card-title{ font-size:1.22rem; margin-bottom:10px; }
.card-body{ font-size:.95rem; }

.tag-row{ margin-bottom:16px; }
.tag{
  display:inline-block; padding:6px 12px; background:var(--accent-dim); color:var(--accent);
  font-family:var(--font-mono); font-size:.7rem; font-weight:500; border-radius:999px;
  margin-right:8px; margin-bottom:8px; border:1px solid rgba(212,255,63,.2);
}

.stack-line{
  font-family:var(--font-mono); font-size:.74rem; color:var(--text-secondary);
  letter-spacing:.03em; margin:18px 0 0; padding-top:14px; border-top:1px dashed var(--border);
}
.impact{
  margin-top:14px; padding:14px 16px; border-radius:10px;
  background:var(--accent-dim); border:1px solid rgba(212,255,63,.14);
  font-size:.88rem; color:var(--text-secondary); line-height:1.6;
}
.impact strong{ color:var(--accent); font-weight:600; }

.chips{ display:flex; flex-wrap:wrap; gap:8px; margin-top:6px; }
.chips span{
  padding:7px 14px; border-radius:999px; font-size:.8rem; font-weight:500;
  background:rgba(255,255,255,.04); border:1px solid var(--border); color:var(--text-secondary);
  transition:all .25s var(--ease-out);
}
.chips span:hover{ color:var(--accent); border-color:rgba(212,255,63,.4); background:var(--accent-dim); transform:translateY(-2px); }

.placeholder-chip{
  display:inline-block; margin:10px 0 18px; padding:6px 12px; border-radius:6px;
  background:var(--accent-dim); color:var(--accent); font-family:var(--font-mono); font-size:.75rem;
  border:1px dashed rgba(212,255,63,.35);
}

/* ── 6. SCROLL PROGRESS ──────────────────────────────────── */
.progress-bar{
  position:fixed; top:0; left:0; height:2px; width:0%; z-index:60;
  background:var(--accent); box-shadow:0 0 10px rgba(212,255,63,.5);
}

/* ── 7. NAV ──────────────────────────────────────────────── */
.nav{ position:fixed; top:0; left:0; right:0; z-index:40; padding:20px 0; transition:all .3s ease; }
.nav.scrolled{
  background:rgba(10,10,10,.82); backdrop-filter:blur(12px); -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border); padding:14px 0;
}
.nav-inner{ display:flex; justify-content:space-between; align-items:center; gap:16px; }

.brand{ font-weight:800; font-size:1.02rem; letter-spacing:-.02em; display:flex; align-items:center; gap:10px; }
.brand-mark{
  width:26px; height:26px; background:var(--accent); color:var(--bg);
  border-radius:7px 7px 7px 2px; display:grid; place-items:center; font-size:.82rem; font-weight:800;
}

.nav-links{ display:flex; gap:30px; align-items:center; }
.nav-links a{ font-size:.9rem; font-weight:500; color:var(--text-secondary); }
.nav-links a:hover{ color:var(--text-primary); }
.nav-links a.active{ color:var(--text-primary); }
.nav-cta{
  padding:8px 18px !important; border:1px solid var(--border); border-radius:999px;
  color:var(--text-primary) !important; transition:all .25s ease;
}
.nav-cta:hover{ border-color:var(--accent); color:var(--accent) !important; }

.hamburger{ display:none; background:none; border:none; cursor:pointer; padding:8px; flex-direction:column; gap:5px; }
.hamburger span{ display:block; width:22px; height:2px; background:var(--text-primary); border-radius:2px; transition:all .3s var(--ease-out); }
.hamburger.open span:nth-child(1){ transform:translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2){ opacity:0; }
.hamburger.open span:nth-child(3){ transform:translateY(-7px) rotate(-45deg); }

/* ── 8. HERO ─────────────────────────────────────────────── */
.hero{ min-height:100vh; display:flex; align-items:center; padding:120px 0 80px; position:relative; }
.hero::after{
  content:""; position:absolute; top:10%; right:5%; width:440px; height:440px;
  background:radial-gradient(circle,rgba(212,255,63,.09) 0%,transparent 70%);
  border-radius:50%; z-index:-1; pointer-events:none;
}
.hero-grid{ display:grid; grid-template-columns:1.2fr .8fr; gap:60px; align-items:center; }

.hero-eye{ display:block; margin-bottom:20px; }
.status-chip{
  display:inline-flex; align-items:center; gap:8px; margin-bottom:26px;
  padding:7px 14px; border-radius:999px; font-size:.78rem; font-weight:600;
  background:rgba(255,255,255,.04); border:1px solid var(--border); color:var(--text-secondary);
}
.dot{ width:7px; height:7px; border-radius:50%; background:var(--accent); box-shadow:0 0 0 0 rgba(212,255,63,.6); animation:pulse 2.2s infinite; }
@keyframes pulse{ 70%{ box-shadow:0 0 0 8px rgba(212,255,63,0);} 100%{ box-shadow:0 0 0 0 rgba(212,255,63,0);} }

.hero-title{ margin-bottom:30px; }
.hero-body{ margin-bottom:38px; }
.hero-cta{ display:flex; gap:14px; flex-wrap:wrap; align-items:center; }

.hero-card{
  background:linear-gradient(145deg,rgba(255,255,255,.05),rgba(255,255,255,.01));
  border:1px solid var(--border); border-radius:24px; padding:28px;
  transform:rotate(2deg); transition:transform .5s var(--ease-out);
}
.hero-card:hover{ transform:rotate(0deg) scale(1.02); }
.hero-card-inner{
  background:var(--bg-surface); border:1px solid var(--border); border-radius:16px;
  padding:26px; font-family:var(--font-mono); font-size:.84rem; color:var(--text-secondary); line-height:1.9;
}
.code-line{ display:block; white-space:pre; }
.code-keyword{ color:var(--accent); }
.code-string{ color:#a5f3fc; }
.code-type{ color:#fbbf24; }

/* ── 9. STATS ────────────────────────────────────────────── */
.stats-strip{ border-bottom:1px solid var(--border); background:var(--bg); }
.stats-grid{ display:grid; grid-template-columns:repeat(4,1fr); gap:24px; padding:52px 24px; }
.stat{ text-align:center; }
.stat-num,.stat-suffix{
  font-size:clamp(2.2rem,4.5vw,3.2rem); font-weight:800; letter-spacing:-.03em;
  color:var(--accent); font-family:var(--font-mono);
}
.stat p{ font-size:.82rem; color:var(--text-secondary); margin-top:6px; line-height:1.45; }

/* ── 10. APPROACH ────────────────────────────────────────── */
.approach-grid{ gap:40px; margin-bottom:80px; }
.approach-step{ font-size:1.35rem; color:var(--accent); margin-bottom:12px; letter-spacing:-.01em; }

.principles-head{ margin-bottom:40px; }
.principles-head .text-mono{ display:block; margin-bottom:12px; }
.principle{ border-left:3px solid var(--accent); }

/* ── 11. JOURNEY / TIMELINE ──────────────────────────────── */
.journey-grid{ display:grid; grid-template-columns:1.3fr .7fr; gap:48px; align-items:start; }

.timeline{ position:relative; padding-left:28px; }
.timeline::before{
  content:""; position:absolute; left:5px; top:8px; bottom:8px; width:2px;
  background:linear-gradient(var(--accent),rgba(212,255,63,.15),transparent);
}
.tl-item{ position:relative; padding-bottom:28px; }
.tl-item:last-child{ padding-bottom:0; }
.tl-dot{
  position:absolute; left:-28px; top:8px; width:12px; height:12px; border-radius:50%;
  background:var(--bg); border:3px solid var(--accent); z-index:2;
  box-shadow:0 0 0 4px rgba(212,255,63,.15);
}
.tl-card{
  background:var(--bg); border:1px solid var(--border); border-radius:var(--radius);
  padding:26px 28px; transition:all .35s var(--ease-out);
}
.tl-card:hover{ border-color:var(--border-hover); transform:translateX(6px); }
.tl-date{
  display:inline-block; font-family:var(--font-mono); font-size:.72rem; font-weight:500;
  letter-spacing:.08em; text-transform:uppercase; color:var(--accent);
  padding:4px 10px; border-radius:6px; background:var(--accent-dim); margin-bottom:12px;
}

.edu-card{
  background:var(--bg); border:1px solid var(--border); border-radius:var(--radius);
  padding:32px; position:sticky; top:110px;
}
.edu-card .text-mono{ display:block; margin-bottom:12px; }
.edu-card .card-title{ margin-bottom:4px; }

/* ── 12. CONTACT ─────────────────────────────────────────── */
.contact{ text-align:center; }
.contact-inner{ max-width:760px; }
.contact .section-intro{ margin-bottom:0; }

.contact-form{
  margin:56px auto 0; text-align:left;
  background:var(--bg-surface); border:1px solid var(--border); border-radius:20px; padding:36px;
}
.form-row{ display:grid; grid-template-columns:1fr 1fr; gap:16px; }
.field{ margin-bottom:16px; }
.field label{
  display:block; font-family:var(--font-mono); font-size:.72rem; letter-spacing:.08em;
  text-transform:uppercase; color:var(--text-secondary); margin-bottom:8px;
}
.field input,.field textarea{
  width:100%; padding:13px 16px; border-radius:10px; font-size:.95rem;
  background:var(--bg); border:1px solid var(--border); color:var(--text-primary);
  transition:all .25s ease; resize:vertical;
}
.field input::placeholder,.field textarea::placeholder{ color:#52525b; }
.field input:focus,.field textarea:focus{
  outline:none; border-color:var(--accent); box-shadow:0 0 0 3px rgba(212,255,63,.12);
}
.form-status{ margin-top:14px; font-size:.9rem; font-weight:600; text-align:center; min-height:1.3em; }
.form-status.ok{ color:var(--accent); }
.form-status.err{ color:#f87171; }
.btn.loading{ opacity:.65; pointer-events:none; }

.contact-links{ margin-top:44px; display:flex; justify-content:center; gap:36px; flex-wrap:wrap; }
.contact-links a{ color:var(--text-secondary); font-weight:500; font-size:.92rem; }
.contact-links a:hover{ color:var(--accent); }

/* ── 13. FOOTER ──────────────────────────────────────────── */
.footer{ border-top:1px solid var(--border); padding:56px 0; text-align:center; color:var(--text-secondary); font-size:.9rem; }
.footer-inner{ display:flex; flex-direction:column; gap:10px; align-items:center; }
.footer-mono{ font-family:var(--font-mono); font-size:.72rem; letter-spacing:.06em; text-transform:uppercase; color:#52525b; }
.footer-top{ font-size:.8rem; color:var(--text-secondary); }
.footer-top:hover{ color:var(--accent); }

/* ── 14. REVEAL ANIMATIONS ───────────────────────────────── */
.reveal{ opacity:0; transform:translateY(30px); transition:opacity .8s var(--ease-out),transform .8s var(--ease-out); will-change:opacity,transform; }
.reveal.active{ opacity:1; transform:translateY(0); }
.reveal-delay-1{ transition-delay:.1s; }
.reveal-delay-2{ transition-delay:.2s; }
.reveal-delay-3{ transition-delay:.3s; }
.reveal-delay-4{ transition-delay:.4s; }

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{ animation-duration:.01ms !important; transition-duration:.01ms !important; scroll-behavior:auto !important; }
  .reveal{ opacity:1; transform:none; }
}

/* ── 15. RESPONSIVE ──────────────────────────────────────── */
@media (max-width:980px){
  .hero-grid{ grid-template-columns:1fr; gap:48px; }
  .hero-card{ max-width:480px; }
  .journey-grid{ grid-template-columns:1fr; }
  .edu-card{ position:static; }
  .stats-grid{ grid-template-columns:repeat(2,1fr); }
}

@media (max-width:820px){
  .hamburger{ display:flex; }
  .nav-links{
    position:fixed; inset:0 0 0 auto; width:min(80vw,320px); z-index:45;
    flex-direction:column; align-items:flex-start; justify-content:flex-start; gap:6px;
    padding:96px 28px 32px; background:var(--bg-surface); border-left:1px solid var(--border);
    transform:translateX(100%); transition:transform .38s var(--ease-out);
  }
  .nav-links.open{ transform:translateX(0); }
  .nav-links li{ width:100%; }
  .nav-links a{ display:block; font-size:1.05rem; padding:12px 4px; }
  .nav-cta{ display:inline-block; margin-top:12px; }
  .section{ padding:80px 0; }
  .mobile-backdrop{ position:fixed; inset:0; background:rgba(0,0,0,.6); backdrop-filter:blur(3px); z-index:44; opacity:0; animation:fadeIn .3s forwards; }
  @keyframes fadeIn{ to{ opacity:1; } }
}

@media (max-width:560px){
  .form-row{ grid-template-columns:1fr; }
  .hero{ padding-top:100px; }
  .hero-cta .btn{ width:100%; }
  .hero-cta .btn-icon{ width:100%; border-radius:999px; height:50px; }
  .stats-grid{ grid-template-columns:1fr 1fr; gap:32px 12px; padding:40px 24px; }
  .card{ padding:26px; }
  .contact-form{ padding:26px; }
  .contact-links{ gap:22px; }
}