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

:root {
  --ink: #F0F2F8;
  --ink-soft: #BCC0D4;
  --ink-muted: #7E839E;
  --bg: #0D0F18;
  --bg-card: #13151F;
  --bg-raised: #1A1D2E;
  --accent: #5EEAD4;
  --accent-dim: rgba(94,234,212,0.14);
  --accent-glow: rgba(94,234,212,0.22);
  --rule: #2D3050;
  --serif: 'DM Serif Display', Georgia, serif;
  --sans: 'Inter', system-ui, sans-serif;
  --mono: 'JetBrains Mono', monospace;

  /* Fluid type scale */
  --text-xs:   clamp(11px,  0.6vw, 14px);
  --text-sm:   clamp(13px,  0.75vw, 16px);
  --text-base: clamp(15px,  0.9vw,  19px);
  --text-md:   clamp(16px,  1vw,    21px);
  --text-xl:   clamp(22px,  1.6vw,  32px);
  --text-2xl:  clamp(28px,  2.2vw,  44px);
  --text-hero: clamp(40px,  4vw,    80px);

  /* Fluid spacing */
  --space-xs:  clamp(8px,   0.5vw,  14px);
  --space-sm:  clamp(12px,  0.8vw,  20px);
  --space-md:  clamp(20px,  1.4vw,  36px);
  --space-lg:  clamp(36px,  2.5vw,  64px);
  --space-xl:  clamp(56px,  4vw,    96px);
  --space-2xl: clamp(72px,  5.5vw,  128px);

  /* Container */
  --max-w: 1600px;
  --gutter: clamp(20px, 5vw, 100px);
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--ink);
  font-size: var(--text-base);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* ── NAV ── */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(13,15,24,0.88);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--rule);
  height: clamp(52px, 4vw, 72px);
}
.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--gutter);
  height: 100%;
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px;
}
.nav-logo {
  font-family: var(--mono);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--ink-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  position: relative;
  transition: color 0.2s;
  overflow: visible;
  white-space: nowrap;
}
.nav-logo:hover { color: var(--accent); }
.nav-logo::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0; right: 0;
  height: 1.5px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.25s ease;
  border-radius: 2px;
}
.nav-logo.active { color: var(--accent); }
.nav-logo.active::after { transform: scaleX(1); }
.nav-links { display: flex; gap: clamp(10px, 2vw, 40px); list-style: none; flex-wrap: nowrap; overflow-x: auto; scrollbar-width: none; -ms-overflow-style: none; }
.nav-links::-webkit-scrollbar { display: none; }
.nav-links a {
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--ink-muted);
  text-decoration: none;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition: color 0.2s;
  position: relative;
}
.nav-links a:hover { color: var(--accent); }
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0; right: 0;
  height: 1.5px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.25s ease;
  border-radius: 2px;
}
.nav-links a.active { color: var(--accent); }
.nav-links a.active::after { transform: scaleX(1); }

/* ── HERO ── */
.hero {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  padding-top: clamp(52px, 4vw, 72px);
  position: relative;
  overflow: hidden;
}
.hero-left {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--space-xl) var(--space-lg) var(--space-xl) var(--gutter);
  border-right: 1px solid var(--rule);
  position: relative;
}
.hero-left::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse at 30% 50%, rgba(94,234,212,0.04) 0%, transparent 65%);
  pointer-events: none;
}
.hero-eyebrow {
  font-family: var(--mono);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: var(--space-md);
  display: flex; align-items: center; gap: 10px;
}
.hero-eyebrow::before {
  content: '';
  display: block;
  width: clamp(20px, 1.5vw, 32px); height: 1px;
  background: var(--accent);
}
.hero-name-row {
  display: flex;
  align-items: center;
  gap: clamp(16px, 1.6vw, 28px);
  margin-bottom: var(--space-xs);
}
.hero-photo {
  width: clamp(72px, 6.5vw, 108px);
  height: clamp(72px, 6.5vw, 108px);
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--accent);
  flex-shrink: 0;
  background: var(--bg-card);
}
.hero-name {
  font-family: var(--serif);
  font-size: var(--text-hero);
  line-height: 1.05;
  color: var(--ink);
  margin-bottom: 0;
}
.hero-name em { font-style: italic; color: var(--accent); }
.hero-title {
  font-size: var(--text-sm);
  font-weight: 400;
  color: var(--ink-muted);
  margin-bottom: var(--space-md);
  letter-spacing: 0.02em;
}
.hero-desc {
  font-size: var(--text-base);
  color: var(--ink-soft);
  line-height: 1.8;
  max-width: 52ch;
  margin-bottom: var(--space-md);
}
.hero-focus {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: var(--space-lg);
}
.hero-focus span {
  border: 1px solid rgba(94,234,212,0.22);
  background: var(--accent-dim);
  color: var(--accent);
  padding: 5px 9px;
  border-radius: 999px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.06em;
}
.hero-ctas { display: flex; gap: var(--space-sm); flex-wrap: wrap; }

/* ── BUTTONS ── */
.btn-primary {
  background: var(--accent);
  color: #0D0F18;
  padding: clamp(10px, 0.8vw, 16px) clamp(22px, 1.8vw, 36px);
  border-radius: 4px;
  font-size: var(--text-sm);
  font-weight: 600;
  text-decoration: none;
  letter-spacing: 0.03em;
  transition: opacity 0.2s, transform 0.15s, box-shadow 0.2s;
}
.btn-primary:hover { opacity: 0.88; transform: translateY(-1px); box-shadow: 0 6px 24px rgba(94,234,212,0.25); }

.btn-outline {
  border: 1.5px solid var(--rule);
  color: var(--ink-soft);
  padding: clamp(10px, 0.8vw, 16px) clamp(22px, 1.8vw, 36px);
  border-radius: 4px;
  font-size: var(--text-sm);
  font-weight: 500;
  text-decoration: none;
  letter-spacing: 0.03em;
  transition: border-color 0.2s, color 0.2s;
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }

.btn-resume {
  display: inline-flex;
  align-items: center;
  gap: clamp(7px, 0.5vw, 10px);
  border: 1.5px solid rgba(94,234,212,0.35);
  color: var(--accent);
  background: var(--accent-dim);
  padding: clamp(10px, 0.8vw, 16px) clamp(22px, 1.8vw, 36px);
  border-radius: 4px;
  font-size: var(--text-sm);
  font-weight: 500;
  text-decoration: none;
  letter-spacing: 0.03em;
  transition: background 0.2s, border-color 0.2s, transform 0.15s, box-shadow 0.2s;
}
.btn-resume:hover {
  background: rgba(94,234,212,0.2);
  border-color: var(--accent);
  transform: translateY(-1px);
  box-shadow: 0 4px 18px rgba(94,234,212,0.15);
}
.btn-resume svg {
  width: clamp(13px, 0.9vw, 17px);
  height: clamp(13px, 0.9vw, 17px);
  flex-shrink: 0;
}

button.btn-resume {
  border-style: solid;
  background-color: var(--accent-dim);
  cursor: pointer;
  font-family: var(--sans);
}

/* ── HERO RIGHT ── */
.hero-right {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--space-xl) var(--gutter) var(--space-xl) var(--space-lg);
  gap: var(--space-md);
}
.stat-row { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(12px, 1vw, 20px); }
.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--rule);
  border-radius: clamp(8px, 0.6vw, 14px);
  padding: clamp(18px, 1.5vw, 32px) clamp(16px, 1.3vw, 28px);
  position: relative; overflow: hidden;
  transition: border-color 0.25s, box-shadow 0.25s;
}
.stat-card:hover { border-color: rgba(94,234,212,0.35); box-shadow: 0 0 28px rgba(94,234,212,0.07); }
.stat-card::after {
  content: '';
  position: absolute; top: 0; left: 0; right: 0;
  height: 2px; background: var(--accent);
  transform: scaleX(0); transform-origin: left;
  transition: transform 0.3s;
}
.stat-card:hover::after { transform: scaleX(1); }
.stat-number {
  font-family: var(--serif);
  font-size: clamp(32px, 3vw, 56px);
  color: var(--ink);
  line-height: 1;
  margin-bottom: var(--space-xs);
}
.stat-label { font-size: var(--text-xs); color: var(--ink-muted); font-weight: 500; letter-spacing: 0.06em; text-transform: uppercase; }

.contact-strip {
  background: var(--bg-card);
  border: 1px solid var(--rule);
  border-radius: clamp(8px, 0.6vw, 14px);
  padding: clamp(16px, 1.2vw, 26px);
  display: flex; flex-direction: column; gap: clamp(10px, 0.8vw, 16px);
}
.contact-item { display: flex; align-items: center; gap: clamp(10px, 0.8vw, 16px); font-size: var(--text-sm); color: var(--ink-soft); }
.contact-icon {
  width: clamp(26px, 1.8vw, 36px); height: clamp(26px, 1.8vw, 36px);
  background: var(--accent-dim);
  border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
  font-size: var(--text-sm);
  flex-shrink: 0;
}

/* ── SUBSECTIONS (skills technical block, certs, award) ── */
.subsection { margin-top: var(--space-2xl); }
.subsection .section-header { margin-bottom: var(--space-md); }
.section-title--sub { font-size: var(--text-xl); }

/* ── SECTIONS ── */
section { padding: var(--space-2xl) var(--gutter); }
section:nth-child(even) { background: var(--bg-card); border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule); }

.section-header { display: flex; align-items: baseline; gap: clamp(12px, 1vw, 24px); margin-bottom: var(--space-lg); flex-wrap: wrap; }
.section-tag {
  font-family: var(--mono);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border: 1px solid rgba(94,234,212,0.25);
  background: var(--accent-dim);
  padding: clamp(3px, 0.3vw, 6px) clamp(8px, 0.6vw, 14px);
  border-radius: 3px;
  white-space: nowrap;
}
.section-title { font-family: var(--serif); font-size: var(--text-2xl); color: var(--ink); line-height: 1.15; }
.section-rule { flex: 1; height: 1px; background: var(--rule); margin-left: clamp(12px, 1vw, 24px); min-width: 20px; }

/* ── TIMELINE ── */
.timeline { display: flex; flex-direction: column; max-width: min(860px, 100%); }
.timeline-item {
  display: grid;
  grid-template-columns: clamp(120px, 12vw, 200px) 1fr;
  gap: clamp(24px, 2.5vw, 52px);
  position: relative;
  padding-bottom: var(--space-lg);
}
.timeline-item:last-child { padding-bottom: 0; }
.timeline-item::before {
  content: '';
  position: absolute;
  left: calc(clamp(120px, 12vw, 200px) + clamp(24px, 2.5vw, 52px) / 2 - 8px);
  top: 8px; bottom: 0;
  width: 1px; background: var(--rule);
}
.timeline-item:last-child::before { display: none; }
.timeline-meta { text-align: right; padding-top: 4px; }
.timeline-date { font-family: var(--mono); font-size: var(--text-xs); color: var(--ink-muted); letter-spacing: 0.06em; line-height: 1.8; }
.timeline-dot {
  position: absolute;
  left: calc(clamp(120px, 12vw, 200px) + clamp(24px, 2.5vw, 52px) / 2 - 17px);
  top: 5px;
  width: clamp(14px, 1vw, 20px); height: clamp(14px, 1vw, 20px);
  border-radius: 50%;
  background: var(--bg); border: 2px solid var(--accent);
  z-index: 1;
  transition: background 0.2s, box-shadow 0.2s;
}
.timeline-item:hover .timeline-dot { background: var(--accent); box-shadow: 0 0 12px var(--accent-glow); }
.timeline-role { font-size: var(--text-md); font-weight: 600; color: var(--ink); margin-bottom: 3px; }
.timeline-company { font-size: var(--text-sm); font-weight: 500; color: var(--accent); margin-bottom: var(--space-sm); letter-spacing: 0.02em; }
.timeline-bullets { list-style: none; display: flex; flex-direction: column; gap: var(--space-xs); }
.timeline-bullets li {
  font-size: var(--text-sm);
  color: var(--ink-soft);
  line-height: 1.7;
  padding-left: clamp(14px, 1vw, 20px);
  position: relative;
}
.timeline-bullets li::before { content: '—'; position: absolute; left: 0; color: var(--ink-muted); font-size: var(--text-xs); }

/* ── SKILLS ── */
.skills-groups {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.skill-group {
  background: var(--bg-card);
  border: 1px solid var(--rule);
  border-radius: 6px;
  padding: clamp(20px, 2vw, 30px);
  transition: transform .25s, border-color .25s, box-shadow .25s;
}
.skill-group:hover {
  transform: translateY(-4px);
  border-color: rgba(94,234,212,.35);
  box-shadow: 0 14px 36px rgba(0,0,0,.18);
}
.skill-group-head { display:flex; align-items:baseline; gap:12px; margin-bottom:18px; }
.skill-group-kicker { font-family:var(--mono); color:var(--accent); font-size:11px; }
.skill-group h3 { font-family:var(--serif); font-size:clamp(21px,1.5vw,28px); font-weight:400; }
.skill-pills { display:flex; flex-wrap:wrap; gap:8px; }
.skill-pills span {
  border:1px solid var(--rule);
  background:rgba(255,255,255,.02);
  color:var(--ink-soft);
  border-radius:999px;
  padding:7px 10px;
  font-size:12px;
  line-height:1.2;
}

/* ── PROJECTS ── */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(280px, 100%), 1fr));
  gap: clamp(24px, 2vw, 40px);
}
.project-type {
  font-family:var(--mono);
  color:var(--accent);
  font-size:10px;
  letter-spacing:.08em;
  margin-top:-4px;
}
.project-details {
  display:grid;
  gap:9px;
  border-top:1px solid var(--rule);
  border-bottom:1px solid var(--rule);
  padding:14px 0;
  color:var(--ink-soft);
  font-size:12px;
  line-height:1.6;
}
.project-details strong { color:var(--ink); font-weight:600; }
.project-card {
  background: var(--bg-raised);
  border: 1px solid var(--rule);
  border-radius: clamp(10px, 0.8vw, 16px);
  padding: clamp(28px, 2.4vw, 48px);
  display: flex; flex-direction: column;
  gap: var(--space-md);
  transition: border-color 0.25s, box-shadow 0.25s, transform 0.2s;
  position: relative; overflow: hidden;
}
.project-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0;
  height: 2px; background: var(--accent);
  transform: scaleX(0); transform-origin: left;
  transition: transform 0.3s;
}
.project-card:hover { border-color: rgba(94,234,212,0.35); box-shadow: 0 0 32px rgba(94,234,212,0.08); transform: translateY(-2px); }
.project-card:hover::before { transform: scaleX(1); }
.project-icon {
  width: clamp(40px, 3vw, 56px); height: clamp(40px, 3vw, 56px);
  background: var(--accent-dim);
  border-radius: clamp(8px, 0.6vw, 12px);
  display: flex; align-items: center; justify-content: center;
  font-size: clamp(18px, 1.5vw, 26px);
  flex-shrink: 0;
}
.project-name { font-size: var(--text-md); font-weight: 600; color: var(--ink); line-height: 1.3; }
.project-url {
  font-family: var(--mono);
  font-size: var(--text-xs);
  color: var(--accent);
  letter-spacing: 0.04em;
  text-decoration: none;
}
.project-url:hover { opacity: 1; }
.project-desc { font-size: var(--text-sm); color: var(--ink-muted); line-height: 1.7; flex: 1; }
.project-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: var(--space-xs); }
.project-tag {
  font-family: var(--mono);
  font-size: var(--text-xs);
  color: var(--ink-muted);
  background: var(--bg-card);
  border: 1px solid var(--rule);
  border-radius: 3px;
  padding: 2px 8px;
  letter-spacing: 0.04em;
}
.project-link {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--accent);
  text-decoration: none;
  margin-top: auto;
  transition: gap 0.2s;
}
.project-link:hover { gap: 10px; }

/* ── EDUCATION ── */
.edu-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(20px, 1.8vw, 32px); max-width: min(860px, 100%); }
.edu-card {
  background: var(--bg-raised);
  border: 1px solid var(--rule);
  border-radius: clamp(8px, 0.6vw, 14px);
  padding: clamp(24px, 2vw, 40px);
  border-left: 2px solid var(--accent);
}
.edu-degree { font-size: var(--text-base); font-weight: 600; color: var(--ink); margin-bottom: 5px; line-height: 1.4; }
.edu-school { font-size: var(--text-sm); color: var(--accent); margin-bottom: var(--space-xs); font-weight: 500; }
.edu-years { font-family: var(--mono); font-size: var(--text-xs); color: var(--ink-muted); letter-spacing: 0.06em; }

/* ── CERTS ── */
.cert-list { display: flex; flex-wrap: wrap; gap: clamp(16px, 1.4vw, 24px); max-width: min(860px, 100%); }
.cert-chip {
  display: flex; align-items: center; gap: clamp(14px, 1vw, 20px);
  background: var(--bg-raised);
  border: 1px solid var(--rule);
  border-radius: clamp(6px, 0.5vw, 10px);
  padding: clamp(16px, 1.3vw, 24px) clamp(20px, 1.6vw, 32px);
  transition: border-color 0.2s;
}
.cert-chip:hover { border-color: rgba(94,234,212,0.35); }
.cert-badge {
  width: clamp(28px, 2vw, 40px); height: clamp(28px, 2vw, 40px);
  background: var(--accent-dim);
  border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
  font-size: var(--text-base);
}
.cert-name { font-size: var(--text-base); font-weight: 600; color: var(--ink); }
.cert-body { font-size: var(--text-xs); color: var(--ink-muted); margin-top: 2px; }

/* ── AWARD ── */
.award-card {
  max-width: min(720px, 100%);
  background: linear-gradient(135deg, #0f2a3d 0%, #0a1f2e 100%);
  border: 1px solid rgba(94,234,212,0.2);
  border-radius: clamp(10px, 0.8vw, 16px);
  padding: clamp(28px, 2.5vw, 52px) clamp(28px, 2.8vw, 56px);
  display: flex; align-items: center;
  gap: clamp(20px, 1.8vw, 36px);
  position: relative; overflow: hidden;
}
.award-card::before {
  content: '';
  position: absolute; top: -40px; right: -40px;
  width: 200px; height: 200px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(94,234,212,0.1) 0%, transparent 70%);
}
.award-icon-wrap {
  width: clamp(48px, 4vw, 72px); height: clamp(48px, 4vw, 72px);
  background: rgba(94,234,212,0.12);
  border-radius: clamp(8px, 0.7vw, 14px);
  display: flex; align-items: center; justify-content: center;
  font-size: clamp(22px, 2vw, 36px);
  flex-shrink: 0;
}
.award-date { font-family: var(--mono); font-size: var(--text-xs); letter-spacing: 0.1em; color: var(--accent); margin-bottom: 6px; }
.award-title { font-family: var(--serif); font-size: var(--text-xl); line-height: 1.3; margin-bottom: 6px; color: var(--ink); }
.award-body { font-size: var(--text-sm); color: var(--ink-muted); }

/* ── FOOTER ── */
.footer-contact {
  background: var(--bg-card);
  border-top: 1px solid var(--rule);
  padding: var(--space-2xl) var(--gutter);
}
.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: clamp(40px, 4vw, 80px);
}
.footer-lead { font-family: var(--serif); font-size: var(--text-2xl); line-height: 1.2; margin-bottom: var(--space-xs); }
.footer-sub { font-size: var(--text-sm); color: var(--ink-muted); }
.footer-links { display: flex; flex-direction: column; gap: clamp(10px, 0.9vw, 18px); align-items: flex-end; }
.footer-link {
  display: flex; align-items: center; gap: clamp(8px, 0.7vw, 14px);
  font-size: var(--text-sm);
  color: var(--ink-soft);
  text-decoration: none;
  transition: color 0.2s;
}
.footer-link:hover { color: var(--accent); }
.footer-link-icon {
  width: clamp(28px, 2vw, 40px); height: clamp(28px, 2vw, 40px);
  background: var(--accent-dim);
  border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
  font-size: var(--text-sm);
}
.footer-copy {
  background: var(--bg);
  border-top: 1px solid var(--rule);
  padding: clamp(14px, 1.2vw, 24px) var(--gutter);
  font-size: var(--text-xs);
  color: var(--ink-muted);
  font-family: var(--mono);
  letter-spacing: 0.04em;
  text-align: center;
}

/* ── BACK TO TOP ── */
.back-to-top {
  position: fixed;
  bottom: clamp(20px, 2vw, 36px);
  right: clamp(20px, 2vw, 36px);
  width: clamp(40px, 3vw, 52px);
  height: clamp(40px, 3vw, 52px);
  background: var(--accent-dim);
  border: 1.5px solid rgba(94,234,212,0.35);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  z-index: 99;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity 0.3s, visibility 0.3s, transform 0.3s, background 0.2s, box-shadow 0.2s;
}
.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.back-to-top:hover {
  background: rgba(94,234,212,0.22);
  box-shadow: 0 0 20px rgba(94,234,212,0.2);
}
.back-to-top svg {
  width: clamp(16px, 1.2vw, 20px);
  height: clamp(16px, 1.2vw, 20px);
  color: var(--accent);
  transition: transform 0.2s;
}
.back-to-top:hover svg { transform: translateY(-2px); }

/* ── ANIMATED BACKGROUND ── */
#hero-canvas {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.28;
}
.hero-left, .hero-right { position: relative; z-index: 1; }

/* ── ANIMATIONS ── */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity 0.55s ease, transform 0.55s ease; }
.reveal.visible { opacity: 1; transform: none; }

/* ════════════════════════════════════════
   TABLET + MOBILE — max 900px
   ════════════════════════════════════════ */
@media (max-width: 900px) {

  /* ── Nav: two-row layout on mobile ── */
  nav {
    height: auto;
    padding: 10px 0 0;
  }
  .nav-inner {
    padding: 0 16px;
    height: auto;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }
  .nav-logo {
    font-size: 10px;
    letter-spacing: 0.06em;
    padding-bottom: 8px;
    white-space: nowrap;
  }
  .nav-links {
    display: flex;
    gap: 0;
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
    padding-bottom: 10px;
    border-top: 1px solid var(--rule);
    padding-top: 8px;
    justify-content: space-between;
  }
  .nav-links::-webkit-scrollbar { display: none; }
  .nav-links li { flex: 1; text-align: center; }
  .nav-links a {
    font-size: 9px;
    letter-spacing: 0.04em;
    padding: 2px 0;
    display: inline-block;
    color: var(--ink-muted);
  }
  /* No active highlight or underline on nav links on mobile — plain separator row */
  .nav-links a.active,
  .nav-links a:hover { color: var(--ink-muted); }
  .nav-links a::after,
  .nav-links a.active::after { display: none; }

  /* ── Root overrides: fixed px values on mobile instead of vw-based clamps ── */
  :root {
    --gutter: 18px;
    --text-xs:   11px;
    --text-sm:   13px;
    --text-base: 15px;
    --text-md:   16px;
    --text-xl:   22px;
    --text-2xl:  26px;
    --space-xs:  8px;
    --space-sm:  12px;
    --space-md:  20px;
    --space-lg:  32px;
    --space-xl:  48px;
    --space-2xl: 56px;
  }

  /* ── Hero: single column ── */
  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 72px;
  }
  .hero-left {
    border-right: none;
    border-bottom: 1px solid var(--rule);
    padding: 36px 18px 28px;
  }
  .hero-right {
    padding: 24px 18px 36px;
    gap: 16px;
  }
  .hero-name { font-size: 42px; }
  .hero-desc { max-width: 100%; font-size: 15px; line-height: 1.7; }
  .hero-ctas { gap: 10px; }
  .btn-primary, .btn-outline, .btn-resume {
    padding: 11px 20px;
    font-size: 13px;
  }

  /* ── Stats ── */
  .stat-row { grid-template-columns: 1fr 1fr; gap: 10px; }
  .stat-number { font-size: 28px; }
  .stat-label { font-size: 10px; }

  /* ── Contact strip: break long email ── */
  .contact-item { font-size: 13px; word-break: break-word; overflow-wrap: anywhere; }

  .subsection { margin-top: 48px; }

  /* ── Sections ── */
  section { padding: 48px 18px; }

  /* Section header: stack vertically */
  .section-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    margin-bottom: 24px;
  }
  .section-rule { display: none; }
  .section-title { font-size: 26px; }

  /* ── Timeline: single column ── */
  .timeline-item {
    grid-template-columns: 1fr;
    gap: 6px;
    padding-bottom: 32px;
  }
  .timeline-item::before { display: none; }
  .timeline-dot { display: none; }
  .timeline-meta { text-align: left; padding-top: 0; }
  .timeline-date {
    display: inline-block;
    background: var(--accent-dim);
    border: 1px solid rgba(94,234,212,0.2);
    border-radius: 3px;
    padding: 3px 8px;
    font-size: 11px;
    margin-bottom: 8px;
  }
  .timeline-role { font-size: 16px; }
  .timeline-bullets li { font-size: 13px; }

  /* ── Skills: 2 columns on tablet, 1 on phone (overridden below) ── */
  .skills-groups { grid-template-columns: 1fr 1fr; gap: 14px; }

  /* ── Projects: 1 column ── */
  .projects-grid { grid-template-columns: 1fr; gap: 20px; }
  .project-card { padding: 24px 20px; gap: 14px; }

  /* ── Education: 1 column ── */
  .edu-grid { grid-template-columns: 1fr; gap: 16px; }
  .edu-card { padding: 20px 18px; }

  /* ── Certs ── */
  .cert-list { flex-direction: column; gap: 12px; }
  .cert-chip { width: 100%; padding: 14px 16px; }

  /* ── Award card: stack ── */
  .award-card {
    flex-direction: column;
    align-items: flex-start;
    padding: 24px 18px;
    gap: 14px;
  }

  /* ── Footer ── */
  .footer-contact { padding: 48px 18px; }
  .footer-inner { grid-template-columns: 1fr; gap: 28px; }
  .footer-links { align-items: flex-start; width: 100%; }
  .footer-link { width: 100%; }
  .footer-lead { font-size: 26px; }
  .footer-link { font-size: 13px; word-break: break-word; }
}

/* ════════════════════════════════════════
   PHONE — max 480px
   ════════════════════════════════════════ */
@media (max-width: 480px) {

  /* ── Nav: shorten logo, compress links ── */
  .nav-logo { font-size: 9px; letter-spacing: 0.05em; }
  .nav-links { gap: 8px; }
  .nav-links a { font-size: 9px; }

  /* ── Hero ── */
  .hero-left { padding: 28px 16px 24px; }
  .hero-right { padding: 20px 16px 32px; }
  .hero-name { font-size: 36px; }
  .hero-name-row { gap: 12px; }
  .hero-photo { width: 56px; height: 56px; }
  .hero-title { font-size: 12px; }
  .hero-desc { font-size: 14px; }

  /* Buttons: row for primary+outline, full-width for CV */
  .hero-ctas { flex-direction: column; gap: 8px; }
  .btn-primary, .btn-outline, .btn-resume {
    width: 100%;
    text-align: center;
    justify-content: center;
    padding: 13px 16px;
    font-size: 13px;
  }

  /* ── Stats ── */
  .stat-number { font-size: 24px; }
  .stat-label { font-size: 9px; }
  .contact-strip { padding: 14px; }
  .contact-item { font-size: 12px; }

  /* ── Sections ── */
  section { padding: 40px 16px; }
  .section-title { font-size: 22px; }

  /* ── Skills: 1 column ── */
  .skills-groups { grid-template-columns: 1fr; }

  /* ── Timeline ── */
  .timeline-role { font-size: 15px; }

  /* ── Certs ── */
  .cert-chip { padding: 12px 14px; }
  .cert-name { font-size: 14px; }

  /* ── Award ── */
  .award-title { font-size: 18px; }

  /* ── Back to top ── */
  .back-to-top {
    bottom: 16px;
    right: 16px;
    width: 44px;
    height: 44px;
  }

  /* ── Footer ── */
  .footer-contact { padding: 40px 16px; }
  .footer-copy { font-size: 10px; padding: 12px 16px; }
}

/* ════════════════════════════════════════
   SYSTEM DARK MODE — extra refinements
   (site is dark by default; this layer
   boosts contrast further for OS-level
   dark mode users)
   ════════════════════════════════════════ */
@media (prefers-color-scheme: dark) {
  :root {
    /* Slightly brighter backgrounds so cards
       are easier to distinguish at a glance */
    --bg:       #0A0C14;
    --bg-card:  #111320;
    --bg-raised: #1C2030;

    /* Brighter text for improved legibility */
    --ink:      #F4F6FF;
    --ink-soft: #C8CCDF;
    --ink-muted: #8E93B0;

    /* Stronger borders so card edges are
       visible without straining */
    --rule: #323656;

    /* Slightly stronger accent glow */
    --accent-dim:  rgba(94,234,212,0.16);
    --accent-glow: rgba(94,234,212,0.26);
  }

  /* Nav: fully opaque so content behind
     doesn't bleed through and reduce contrast */
  nav {
    background: rgba(10,12,20,0.96);
  }

  /* Hero gradient: a touch more visible */
  .hero-left::before {
    background: radial-gradient(ellipse at 30% 50%, rgba(94,234,212,0.06) 0%, transparent 65%);
  }

  /* Timeline bullets: easier to scan */
  .timeline-bullets li {
    color: var(--ink-soft);
  }

  /* Skill / project descriptions: lifted
     from muted to soft for readability */
  .skill-desc,
  .project-desc,
  .award-body,
  .footer-sub {
    color: var(--ink-soft);
  }

  /* Cert sub-label: lifted one step */
  .cert-body {
    color: var(--ink-soft);
  }

  /* Footer copy: lifted slightly */
  .footer-copy {
    color: var(--ink-muted);
  }
}