/* ============================================================
   Yash Gupta — Portfolio
   Dark + Neon glow theme.  Edit the variables below to re-skin.
   ============================================================ */

:root {
  --bg:        #07070b;
  --bg-soft:   #0e0e16;
  --card:      rgba(255, 255, 255, 0.04);
  --card-brd:  rgba(255, 255, 255, 0.08);
  --text:      #e8e8f0;
  --muted:     #9a9ab0;
  --accent:    #8b5cf6;   /* violet */
  --accent-2:  #22d3ee;   /* cyan   */
  --accent-3:  #ec4899;   /* pink   */
  --radius:    18px;
  --maxw:      1140px;
  --ease:      cubic-bezier(0.22, 1, 0.36, 1);
}

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

html { scroll-behavior: smooth; scroll-padding-top: 90px; }

body {
  font-family: "Inter", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, .logo { font-family: "Space Grotesk", sans-serif; line-height: 1.1; }

a { color: inherit; text-decoration: none; }
em { color: var(--accent-2); font-style: normal; }

/* accessibility: skip link + visible keyboard focus */
.skip-link {
  position: absolute; left: 12px; top: -60px; z-index: 100;
  background: var(--accent); color: #fff; padding: 0.6rem 1rem;
  border-radius: 8px; font-weight: 600; transition: top 0.2s var(--ease);
}
.skip-link:focus { top: 12px; }
:focus-visible { outline: 2px solid var(--accent-2); outline-offset: 3px; border-radius: 6px; }

/* ---------- animated aurora background ---------- */
.bg-aurora {
  position: fixed; inset: 0; z-index: -2; overflow: hidden;
  background:
    radial-gradient(1200px 800px at 80% -10%, rgba(139,92,246,0.12), transparent 60%),
    radial-gradient(900px 700px at -10% 30%, rgba(34,211,238,0.10), transparent 55%);
}
.blob {
  position: absolute; border-radius: 50%; filter: blur(90px); opacity: 0.55;
  animation: float 18s var(--ease) infinite alternate;
}
.blob-1 { width: 460px; height: 460px; top: -120px; left: -80px;  background: var(--accent); }
.blob-2 { width: 520px; height: 520px; bottom: -160px; right: -120px; background: var(--accent-2); animation-delay: -6s; }
.blob-3 { width: 380px; height: 380px; top: 40%; left: 55%; background: var(--accent-3); opacity: 0.30; animation-delay: -11s; }
@keyframes float {
  to { transform: translate(40px, -30px) scale(1.15); }
}

/* cursor glow (desktop) */
.cursor-glow {
  position: fixed; width: 380px; height: 380px; border-radius: 50%;
  background: radial-gradient(circle, rgba(139,92,246,0.14), transparent 65%);
  pointer-events: none; z-index: -1; transform: translate(-50%, -50%);
  transition: opacity 0.3s; opacity: 0;
}

/* ---------- nav ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  display: flex; align-items: center; gap: 1.5rem;
  padding: 1rem clamp(1rem, 4vw, 3rem);
  transition: background 0.3s, border-color 0.3s, padding 0.3s;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(7,7,11,0.72);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--card-brd);
  padding-top: 0.7rem; padding-bottom: 0.7rem;
}
.logo { font-size: 1.4rem; font-weight: 700; letter-spacing: -0.5px; }
.logo span { color: var(--accent); }
.nav-links { margin-left: auto; display: flex; gap: 1.6rem; }
.nav-links a { color: var(--muted); font-weight: 500; font-size: 0.95rem; position: relative; transition: color 0.2s; }
.nav-links a::after {
  content: ""; position: absolute; left: 0; bottom: -4px; width: 0; height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2)); transition: width 0.25s var(--ease);
}
.nav-links a:hover { color: var(--text); }
.nav-links a:hover::after { width: 100%; }
.menu-toggle { display: none; background: none; border: none; color: var(--text); font-size: 1.5rem; cursor: pointer; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.8rem 1.5rem; border-radius: 999px; font-weight: 600; font-size: 0.95rem;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff; border: none; cursor: pointer; position: relative;
  transition: transform 0.2s var(--ease), box-shadow 0.3s;
  box-shadow: 0 8px 24px rgba(139,92,246,0.30);
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 12px 34px rgba(139,92,246,0.45); }
.btn-ghost {
  background: transparent; color: var(--text);
  border: 1px solid var(--card-brd); box-shadow: none;
}
.btn-ghost:hover { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(139,92,246,0.12); }
.btn-sm { padding: 0.55rem 1.1rem; font-size: 0.85rem; margin-left: 0; }
.btn-lg { padding: 1rem 2rem; font-size: 1.05rem; }

/* ---------- hero ---------- */
.hero {
  min-height: 100vh; display: flex; flex-direction: column; justify-content: center;
  padding: 6rem clamp(1rem, 4vw, 3rem) 4rem;
  max-width: var(--maxw); margin: 0 auto; position: relative;
}
.eyebrow { color: var(--accent-2); font-weight: 600; letter-spacing: 1px; margin-bottom: 0.6rem; }
.hero-title {
  font-size: clamp(2.8rem, 9vw, 6rem); font-weight: 700; letter-spacing: -2px;
  background: linear-gradient(120deg, #fff 30%, var(--accent) 65%, var(--accent-2));
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.hero-sub { font-size: clamp(1.4rem, 4vw, 2.4rem); margin-top: 0.5rem; color: var(--text); font-weight: 600; }
.type { color: var(--accent-2); border-right: 2px solid var(--accent-2); padding-right: 2px; }
.hero-desc { color: var(--muted); max-width: 540px; margin-top: 1.4rem; font-size: 1.08rem; }
.hero-cta { display: flex; gap: 1rem; margin-top: 2.2rem; flex-wrap: wrap; }
.hero-stats { display: flex; gap: 2.5rem; margin-top: 3.5rem; flex-wrap: wrap; }
.hero-stats strong {
  display: block; font-family: "Space Grotesk"; font-size: 2.2rem; font-weight: 700;
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.hero-stats span { color: var(--muted); font-size: 0.9rem; }

.scroll-hint { position: absolute; bottom: 2rem; left: 50%; transform: translateX(-50%); }
.scroll-hint span {
  display: block; width: 26px; height: 42px; border: 2px solid var(--muted); border-radius: 14px; position: relative;
}
.scroll-hint span::after {
  content: ""; position: absolute; top: 8px; left: 50%; transform: translateX(-50%);
  width: 4px; height: 8px; background: var(--accent-2); border-radius: 2px;
  animation: scrolldot 1.6s infinite;
}
@keyframes scrolldot { 0%{opacity:1;top:8px} 70%{opacity:0;top:22px} 100%{opacity:0} }

/* ---------- sections ---------- */
.section { max-width: var(--maxw); margin: 0 auto; padding: 6rem clamp(1rem, 4vw, 3rem); }
.section-head { margin-bottom: 3rem; }
.kicker { color: var(--accent); font-weight: 600; font-size: 0.85rem; letter-spacing: 2px; text-transform: uppercase; }
.section-head h2 { font-size: clamp(2rem, 5vw, 3rem); margin-top: 0.5rem; letter-spacing: -1px; }
.section-desc { color: var(--muted); margin-top: 0.6rem; }

/* ---------- about ---------- */
.about-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 3rem; align-items: start; }
.about-text p { color: var(--muted); margin-bottom: 1.1rem; font-size: 1.05rem; }
.about-list { list-style: none; margin-top: 1.5rem; display: grid; gap: 0.7rem; }
.about-list li { color: var(--text); font-weight: 500; }
.about-now {
  margin-top: 1.4rem; padding: 0.9rem 1.1rem;
  background: rgba(34,211,238,0.07); border: 1px solid rgba(34,211,238,0.25);
  border-radius: 12px; color: var(--muted); font-size: 0.95rem;
}
.about-now a { color: var(--accent-2); font-weight: 600; }
.about-now strong { color: var(--text); }
.about-card {
  background: var(--card); border: 1px solid var(--card-brd); border-radius: var(--radius);
  padding: 2.5rem 2rem; text-align: center; backdrop-filter: blur(8px);
  position: relative; overflow: hidden;
}
.about-card::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(400px at 50% -20%, rgba(139,92,246,0.18), transparent 60%);
}
.about-avatar {
  width: 92px; height: 92px; border-radius: 50%; margin: 0 auto 1.2rem;
  display: grid; place-items: center; font-family: "Space Grotesk"; font-weight: 700; font-size: 1.8rem;
  background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #fff;
  box-shadow: 0 10px 30px rgba(139,92,246,0.4); position: relative;
}
.about-card h3 { font-size: 1.3rem; }
.muted { color: var(--muted); }
.about-meta { display: flex; gap: 1rem; justify-content: center; margin-top: 1.2rem; flex-wrap: wrap; position: relative; }
.about-meta span { font-size: 0.85rem; color: var(--muted); background: rgba(255,255,255,0.05); padding: 0.3rem 0.8rem; border-radius: 999px; }

/* ---------- skills ---------- */
.skills-grid { display: flex; flex-wrap: wrap; gap: 0.9rem; }
.skill-chip {
  padding: 0.7rem 1.3rem; border-radius: 999px; font-weight: 500;
  background: var(--card); border: 1px solid var(--card-brd);
  transition: transform 0.2s var(--ease), border-color 0.2s, color 0.2s, box-shadow 0.3s;
  cursor: default;
}
.skill-chip:hover {
  transform: translateY(-3px); border-color: var(--accent); color: #fff;
  box-shadow: 0 8px 22px rgba(139,92,246,0.25);
}

/* skills grouped by category */
.skills-groups { display: grid; gap: 1.6rem; }
.skill-group h3 {
  font-family: "Space Grotesk"; font-size: 0.8rem; color: var(--muted);
  text-transform: uppercase; letter-spacing: 2px; margin-bottom: 0.8rem;
}

/* ---------- projects ---------- */
.filters { display: flex; gap: 0.6rem; margin-bottom: 2.2rem; flex-wrap: wrap; }
.filter {
  padding: 0.5rem 1.2rem; border-radius: 999px; cursor: pointer; font-weight: 500;
  background: transparent; color: var(--muted); border: 1px solid var(--card-brd);
  transition: all 0.2s var(--ease);
}
.filter:hover { color: var(--text); border-color: var(--accent); }
.filter.active { background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #fff; border-color: transparent; }

.projects-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 1.5rem; }
.project {
  background: var(--card); border: 1px solid var(--card-brd); border-radius: var(--radius);
  overflow: hidden; transition: transform 0.3s var(--ease), border-color 0.3s, box-shadow 0.3s;
  display: flex; flex-direction: column;
}
.project:hover {
  transform: translateY(-6px); border-color: rgba(139,92,246,0.5);
  box-shadow: 0 20px 50px rgba(0,0,0,0.5);
}
.project-thumb {
  height: 170px; display: grid; place-items: center; position: relative; overflow: hidden;
  background: linear-gradient(135deg, var(--c1, var(--accent)), var(--c2, var(--accent-2)));
}
.project-thumb::after {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(circle at 30% 20%, rgba(255,255,255,0.25), transparent 50%);
}
.project-emoji { font-size: 3.2rem; filter: drop-shadow(0 6px 12px rgba(0,0,0,0.3)); transition: transform 0.4s var(--ease); z-index: 1; }
.project:hover .project-emoji { transform: scale(1.2) rotate(-6deg); }
.project-body { padding: 1.4rem; display: flex; flex-direction: column; flex: 1; }
.project-tags { display: flex; gap: 0.5rem; margin-bottom: 0.7rem; }
.project-tags span { font-size: 0.72rem; color: var(--accent-2); background: rgba(34,211,238,0.10); padding: 0.2rem 0.6rem; border-radius: 6px; font-weight: 600; }
.project-body h3 { font-size: 1.25rem; margin-bottom: 0.4rem; }
.project-body p { color: var(--muted); font-size: 0.95rem; flex: 1; }
.project-links { display: flex; gap: 1.2rem; margin-top: 1.1rem; }
.project-links a { color: var(--accent); font-weight: 600; font-size: 0.9rem; transition: color 0.2s; }
.project-links a:hover { color: var(--accent-2); }
.project.hide { display: none; }

/* optional real screenshot over the gradient thumb (falls back to emoji if missing) */
.thumb-img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: 1; }

/* live + NDA badges on the thumbnail */
.badge-live, .badge-nda {
  position: absolute; top: 12px; right: 12px; z-index: 2;
  font-size: 0.7rem; font-weight: 700; letter-spacing: 0.5px;
  padding: 0.25rem 0.65rem; border-radius: 999px;
  background: rgba(0,0,0,0.45); backdrop-filter: blur(6px); color: #fff;
}
.badge-live { color: #4ade80; }
.badge-nda { color: #fbbf24; letter-spacing: 1px; }
.badge-building {
  position: absolute; top: 12px; right: 12px; z-index: 2;
  font-size: 0.7rem; font-weight: 700; letter-spacing: 0.5px;
  padding: 0.25rem 0.65rem; border-radius: 999px;
  background: rgba(0,0,0,0.45); backdrop-filter: blur(6px); color: #fbbf24;
}

/* confidential card: subtle locked look */
.project-confidential .project-thumb { filter: saturate(0.7); }
.project-confidential .project-emoji { opacity: 0.85; }
.project-body h3 .lock { font-size: 0.85rem; opacity: 0.6; }

/* ---------- client & confidential band ---------- */
.client-band {
  margin-top: 4rem; padding: clamp(2rem, 5vw, 3.5rem);
  background: linear-gradient(180deg, rgba(255,255,255,0.05), rgba(255,255,255,0.02));
  border: 1px solid var(--card-brd); border-radius: 26px; position: relative; overflow: hidden;
}
.client-band::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(700px at 100% 0%, rgba(34,211,238,0.10), transparent 55%);
  pointer-events: none;
}
.client-head { max-width: 640px; position: relative; }
.client-head h3 { font-size: clamp(1.4rem, 4vw, 2rem); }
.client-head p { color: var(--muted); margin-top: 0.7rem; }

.client-stats { display: flex; gap: 2.5rem; margin: 2rem 0 2.5rem; flex-wrap: wrap; position: relative; }
.client-stats strong {
  display: block; font-family: "Space Grotesk"; font-size: 2rem; font-weight: 700;
  background: linear-gradient(120deg, var(--accent-2), var(--accent));
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.client-stats span { color: var(--muted); font-size: 0.85rem; }

.client-tiles {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 1rem; position: relative;
}
.ctile {
  background: var(--card); border: 1px solid var(--card-brd); border-radius: 14px;
  padding: 1.3rem; transition: transform 0.25s var(--ease), border-color 0.25s, box-shadow 0.3s;
}
.ctile:hover { transform: translateY(-4px); border-color: rgba(34,211,238,0.4); box-shadow: 0 14px 34px rgba(0,0,0,0.4); }
.ctile-ico { font-size: 1.8rem; display: block; margin-bottom: 0.6rem; }
.ctile h4 { font-family: "Space Grotesk"; font-size: 1.05rem; margin-bottom: 0.3rem; }
.ctile p { color: var(--muted); font-size: 0.88rem; min-height: 2.4em; }
.ctile-meta {
  display: inline-block; margin-top: 0.7rem; font-size: 0.72rem; font-weight: 600;
  color: var(--accent-2); background: rgba(34,211,238,0.08);
  padding: 0.3rem 0.6rem; border-radius: 7px;
}
.client-foot { margin-top: 2rem; color: var(--muted); position: relative; }
.client-foot a { color: var(--accent); font-weight: 600; }

/* ---------- consulting work band ---------- */
.work-band {
  margin-top: 4rem; padding: clamp(2rem, 5vw, 3.5rem);
  background: linear-gradient(180deg, rgba(139,92,246,0.07), rgba(255,255,255,0.02));
  border: 1px solid var(--card-brd); border-radius: 26px; position: relative; overflow: hidden;
}
.work-band::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(700px at 0% 0%, rgba(139,92,246,0.14), transparent 55%);
  pointer-events: none;
}
.work-head { max-width: 680px; position: relative; }
.work-head h3 { font-size: clamp(1.4rem, 4vw, 2rem); }
.work-head p { color: var(--muted); margin-top: 0.7rem; }
.work-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.2rem; margin-top: 2rem; position: relative;
}
.wcard {
  background: var(--card); border: 1px solid var(--card-brd); border-radius: 16px; overflow: hidden;
  display: flex; flex-direction: column;
  transition: transform 0.25s var(--ease), border-color 0.25s, box-shadow 0.3s;
}
.wcard:hover { transform: translateY(-5px); border-color: rgba(139,92,246,0.45); box-shadow: 0 16px 40px rgba(0,0,0,0.45); }
.wcard-featured { border-color: rgba(139,92,246,0.5); box-shadow: 0 0 0 1px rgba(139,92,246,0.28), 0 16px 44px rgba(139,92,246,0.20); }
.badge-ent {
  position: absolute; top: 10px; right: 10px; z-index: 2;
  font-size: 0.66rem; font-weight: 700; letter-spacing: 0.3px;
  padding: 0.25rem 0.6rem; border-radius: 999px;
  background: rgba(0,0,0,0.5); backdrop-filter: blur(6px); color: #fff;
}
.wcard-top {
  height: 96px; display: grid; place-items: center; font-size: 2.4rem; position: relative;
  background: linear-gradient(135deg, var(--c1, var(--accent)), var(--c2, var(--accent-2)));
}
.wcard-top::after { content: ""; position: absolute; inset: 0; background: radial-gradient(circle at 30% 20%, rgba(255,255,255,0.22), transparent 55%); }
.wcard-body { padding: 1.2rem; }
.wcard-body h4 { font-family: "Space Grotesk"; font-size: 1.08rem; margin: 0.2rem 0 0.4rem; }
.wcard-body p { color: var(--muted); font-size: 0.9rem; }

/* ---------- companies worked with ---------- */
.company-band { margin-top: 4rem; }
.company-title { font-size: clamp(1.4rem, 4vw, 2rem); }
.company-sub { color: var(--muted); margin-top: 0.5rem; margin-bottom: 1.8rem; }
.company-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1rem; }
.company-card {
  display: flex; align-items: center; gap: 1rem;
  background: var(--card); border: 1px solid var(--card-brd); border-radius: 16px; padding: 1.2rem 1.3rem;
  transition: transform 0.2s var(--ease), border-color 0.2s, box-shadow 0.3s;
}
.company-card:hover { transform: translateY(-4px); border-color: rgba(34,211,238,0.4); box-shadow: 0 14px 34px rgba(0,0,0,0.4); }
.company-logo {
  flex: 0 0 auto; width: 52px; height: 52px; border-radius: 14px; display: grid; place-items: center;
  font-family: "Space Grotesk"; font-weight: 700; font-size: 1.1rem; color: #fff;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
}
.company-card h4 { font-family: "Space Grotesk"; font-size: 1.05rem; }
.company-card p { color: var(--muted); font-size: 0.85rem; margin-top: 0.15rem; }

/* client list inside a card (e.g. VAPT clients) */
.client-list { list-style: none; margin-top: 0.7rem; display: grid; gap: 0.45rem; }
.client-list li { font-size: 0.85rem; color: var(--muted); padding-left: 1.1rem; position: relative; }
.client-list li::before { content: "▸"; position: absolute; left: 0; color: var(--accent-3); }
.client-list li strong { color: var(--accent-2); font-weight: 700; }

/* ---------- contact ---------- */
.contact { text-align: center; }
.contact-card {
  background: var(--card); border: 1px solid var(--card-brd); border-radius: 28px;
  padding: clamp(2.5rem, 6vw, 5rem); max-width: 760px; margin: 0 auto; backdrop-filter: blur(10px);
  position: relative; overflow: hidden;
}
.contact-card::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(600px at 50% 0%, rgba(139,92,246,0.16), transparent 60%);
}
.contact-card > * { position: relative; }
.contact-card h2 { font-size: clamp(1.8rem, 5vw, 2.8rem); margin: 0.5rem 0 1rem; }
.contact-card p { color: var(--muted); max-width: 480px; margin: 0 auto 2rem; }
.socials { display: flex; gap: 1.5rem; justify-content: center; margin-top: 2.2rem; flex-wrap: wrap; }
.socials a { color: var(--muted); font-weight: 500; transition: color 0.2s; }
.socials a:hover { color: var(--accent-2); }

/* ---------- footer ---------- */
.footer {
  border-top: 1px solid var(--card-brd); padding: 2rem clamp(1rem, 4vw, 3rem);
  max-width: var(--maxw); margin: 0 auto; display: flex; justify-content: space-between;
  align-items: center; flex-wrap: wrap; gap: 1rem;
}
.footer p { color: var(--muted); font-size: 0.9rem; }
.back-top { color: var(--accent); font-weight: 600; font-size: 0.9rem; }

/* ---------- reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(30px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.reveal.in { opacity: 1; transform: none; }

/* ---------- responsive ---------- */
@media (max-width: 820px) {
  .about-grid { grid-template-columns: 1fr; }
  .nav-links {
    position: fixed; top: 64px; right: 0; flex-direction: column; gap: 0;
    background: rgba(7,7,11,0.96); backdrop-filter: blur(14px);
    border-left: 1px solid var(--card-brd); border-bottom: 1px solid var(--card-brd);
    border-bottom-left-radius: 16px; padding: 0.5rem 0; width: 200px;
    transform: translateX(110%); transition: transform 0.3s var(--ease);
  }
  .nav-links.open { transform: none; }
  .nav-links a { padding: 0.8rem 1.5rem; width: 100%; }
  .menu-toggle { display: block; order: 3; }
  .nav .btn-sm { display: none; }
  .hero-stats { gap: 1.8rem; }
}

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

/* fallback: if background-clip:text isn't supported, keep gradient text visible */
@supports not ((-webkit-background-clip: text) or (background-clip: text)) {
  .hero-title, .hero-stats strong, .client-stats strong {
    -webkit-text-fill-color: currentColor;
    color: var(--accent-2);
  }
}