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

:root {
  --bg: #04080F;
  --bg2: #080E1A;
  --bg3: #0C1422;
  --border: rgba(0, 229, 255, 0.12);
  --cyan: #00E5FF;
  --cyan-dim: rgba(0, 229, 255, 0.15);
  --cyan-glow: rgba(0, 229, 255, 0.3);
  --text: #D8E4F0;
  --muted: #6A8097;
  --white: #F0F6FF;
  --accent2: #5B8BFF;
  --card: #0A1120;
  --radius: 12px;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'DM Sans', sans-serif;
  font-size: 16px;
  line-height: 1.7;
  overflow-x: hidden;
}

/* ─── NOISE OVERLAY ─── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.04'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 0;
  opacity: 0.4;
}

/* ─── GRID BACKGROUND ─── */
.grid-bg {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 0;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 0%, transparent 100%);
}

/* ─── NAV ─── */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 5vw;
  height: 64px;
  background: rgba(4, 8, 15, 0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

.nav-logo {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--white);
  letter-spacing: -0.02em;
}
.nav-logo span { color: var(--cyan); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}
.nav-links a {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--muted);
  text-decoration: none;
  letter-spacing: 0.05em;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--cyan); }

/* ── RESUME BUTTON (UNCHANGED) ── */
.resume-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 1.1rem;
  background: transparent;
  border: 1px solid var(--cyan);
  color: var(--cyan);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  border-radius: 6px;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
}
.resume-btn:hover {
  background: var(--cyan-dim);
}

/* ─── HERO ─── */
#hero {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 120px 5vw 80px;
  max-width: 900px;
}

.hero-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--cyan);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
  opacity: 0;
  animation: fadeUp 0.6s 0.2s forwards;
}
.hero-tag::before { content: '> '; opacity: 0.5; }

h1.hero-name {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: clamp(3rem, 8vw, 6rem);
  line-height: 1;
  color: var(--white);
  letter-spacing: -0.03em;
  margin-bottom: 0.5rem;
  opacity: 0;
  animation: fadeUp 0.6s 0.35s forwards;
}

.hero-title {
  font-family: 'Syne', sans-serif;
  font-size: clamp(1.1rem, 3vw, 1.5rem);
  font-weight: 600;
  color: var(--cyan);
  margin-bottom: 1.5rem;
  opacity: 0;
  animation: fadeUp 0.6s 0.5s forwards;
}

.hero-desc {
  font-size: 1.05rem;
  color: var(--muted);
  max-width: 540px;
  margin-bottom: 2.5rem;
  opacity: 0;
  animation: fadeUp 0.6s 0.65s forwards;
}

.hero-ctas {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  opacity: 0;
  animation: fadeUp 0.6s 0.8s forwards;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  background: var(--cyan);
  color: var(--bg);
  font-family: 'DM Sans', sans-serif;
  font-weight: 500;
  font-size: 0.9rem;
  border-radius: 8px;
  text-decoration: none;
  transition: opacity 0.2s, transform 0.2s;
}
.btn-primary:hover { opacity: 0.88; transform: translateY(-1px); }

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  font-family: 'DM Sans', sans-serif;
  font-weight: 500;
  font-size: 0.9rem;
  border-radius: 8px;
  text-decoration: none;
  transition: border-color 0.2s, background 0.2s;
}
.btn-ghost:hover { border-color: var(--cyan); background: var(--cyan-dim); }

.scroll-hint {
  margin-top: 4rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  color: var(--muted);
  opacity: 0;
  animation: fadeUp 0.6s 1s forwards;
}
.scroll-line {
  width: 40px;
  height: 1px;
  background: var(--border);
}

/* ─── GLOW ORBS ─── */
.orb {
  position: fixed;
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
  filter: blur(80px);
  opacity: 0.12;
}
.orb1 {
  width: 600px; height: 600px;
  background: radial-gradient(circle, var(--cyan), transparent);
  top: -200px; right: -200px;
}
.orb2 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, var(--accent2), transparent);
  bottom: 100px; left: -100px;
}

/* ─── SECTIONS ─── */
section {
  position: relative;
  z-index: 1;
  padding: 100px 5vw;
  max-width: 1100px;
  margin: 0 auto;
}

.section-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 0.75rem;
}

h2.section-title {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  color: var(--white);
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

.section-divider {
  width: 48px;
  height: 2px;
  background: var(--cyan);
  margin-bottom: 3rem;
  border-radius: 2px;
}

/* ─── ABOUT ─── */
#about .about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.about-text p {
  color: var(--muted);
  margin-bottom: 1rem;
  font-size: 1.02rem;
}
.about-text strong {
  color: var(--text);
  font-weight: 500;
}

.about-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.stat-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: border-color 0.2s;
}
.stat-card:hover { border-color: var(--cyan); }

.stat-num {
  font-family: 'Syne', sans-serif;
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--cyan);
  line-height: 1;
  margin-bottom: 0.25rem;
}
.stat-label {
  font-size: 0.82rem;
  color: var(--muted);
}

/* ─── SKILLS ─── */
#skills { background: none; }

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem;
}

.skill-group {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: border-color 0.25s, transform 0.25s;
}
.skill-group:hover {
  border-color: rgba(0, 229, 255, 0.4);
  transform: translateY(-3px);
}

.skill-group-icon {
  font-size: 1.4rem;
  margin-bottom: 0.75rem;
}

.skill-group-title {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--white);
  margin-bottom: 1rem;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.skill-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  padding: 0.3rem 0.7rem;
  background: rgba(0, 229, 255, 0.07);
  border: 1px solid rgba(0, 229, 255, 0.18);
  border-radius: 4px;
  color: var(--cyan);
}

.cert-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 2.5rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 255, 0.3);
  padding-bottom: 2px;
  transition: border-color 0.2s;
}
.cert-link:hover { border-color: var(--cyan); }

/* ─── PROJECTS ─── */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
}

.project-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: border-color 0.25s, transform 0.25s;
  position: relative;
  overflow: hidden;
}
.project-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--accent2));
  opacity: 0;
  transition: opacity 0.25s;
}
.project-card:hover { border-color: rgba(0, 229, 255, 0.35); transform: translateY(-4px); }
.project-card:hover::before { opacity: 1; }

.project-num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  color: var(--muted);
  letter-spacing: 0.1em;
}

.project-title {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--white);
}

.project-desc {
  font-size: 0.92rem;
  color: var(--muted);
  flex: 1;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.project-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.68rem;
  padding: 0.2rem 0.6rem;
  background: rgba(91, 139, 255, 0.1);
  border: 1px solid rgba(91, 139, 255, 0.25);
  border-radius: 3px;
  color: var(--accent2);
}

.project-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  color: var(--cyan);
  text-decoration: none;
  font-weight: 500;
  margin-top: 0.25rem;
  width: fit-content;
  transition: gap 0.2s;
}
.project-link:hover { gap: 0.65rem; }

/* ─── EXPERIENCE ─── */
.timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
  position: relative;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 120px;
  top: 0; bottom: 0;
  width: 1px;
  background: var(--border);
}

.tl-item {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 2.5rem;
  padding: 2rem 0;
  position: relative;
}
.tl-item + .tl-item {
  border-top: 1px solid var(--border);
}

.tl-year {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  color: var(--cyan);
  padding-top: 4px;
  text-align: right;
  padding-right: 1.5rem;
}

.tl-dot {
  position: absolute;
  left: 116px;
  top: 2.25rem;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 12px var(--cyan-glow);
}

.tl-title {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--white);
  margin-bottom: 0.75rem;
}

.tl-bullets {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.tl-bullets li {
  font-size: 0.92rem;
  color: var(--muted);
  padding-left: 1.1rem;
  position: relative;
}
.tl-bullets li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--border);
}

/* ─── CONTACT ─── */
#contact {
  padding-bottom: 140px;
}

.contact-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 3.5rem 4rem;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 3rem;
  align-items: center;
  position: relative;
  overflow: hidden;
}
.contact-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 50% 80% at 80% 50%, rgba(0,229,255,0.05), transparent);
}

.contact-heading {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  color: var(--white);
  margin-bottom: 0.5rem;
}
.contact-sub {
  font-size: 0.95rem;
  color: var(--muted);
}

.contact-links {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  align-items: flex-end;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.82rem;
  color: var(--text);
  text-decoration: none;
  transition: color 0.2s;
}
.contact-item:hover { color: var(--cyan); }
.contact-item svg { opacity: 0.5; flex-shrink: 0; }

/* ─── FOOTER ─── */
footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--border);
  padding: 1.75rem 5vw;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  color: var(--muted);
}

/* ─── ANIMATIONS ─── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ─── MOBILE ─── */
@media (max-width: 768px) {
  .nav-links { display: none; }

  #about .about-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .timeline::before { left: 0; }
  .tl-item { grid-template-columns: 1fr; gap: 0.5rem; }
  .tl-year { text-align: left; padding-right: 0; }
  .tl-dot { display: none; }

  .contact-card {
    grid-template-columns: 1fr;
    padding: 2rem;
  }
  .contact-links { align-items: flex-start; }
}