/* ============================================================
   DESIGN TOKENS  — Modern Slate · Blue · Teal
============================================================ */
:root {
  /* Backgrounds */
  --clr-bg:        #f5f5f0;   /* off-white background */
  --clr-surface:   #f5f5f0;   /* off-white surface */
  --clr-card:      #ffffff;   /* clean white cards */
  --clr-border:    #e8e8e0;   /* soft border */

  /* Three domain accents */
  --clr-accent1:   #1e3a8a;   /* deep navy – Robotics */
  --clr-accent2:   #2563eb;   /* bright blue – AI */
  --clr-accent3:   #14b8a6;   /* teal – Java/Web */

  /* Text */
  --clr-text:      #102238;   /* deep slate text */
  --clr-muted:     #516273;   /* muted slate */
  --clr-heading:   #0f172a;   /* near-black slate */

  /* Typography */
  --ff-display:    'Roboto', system-ui, sans-serif;
  --ff-sans:       'Roboto', system-ui, sans-serif;
  --ff-mono:       'JetBrains Mono', monospace;

  --radius:        12px;
  --radius-sm:     8px;
  --shadow:        0 4px 24px rgba(30,58,138,0.12);
  --shadow-hover:  0 8px 36px rgba(37,99,235,0.16);
  --transition:    0.25s cubic-bezier(0.4,0,0.2,1);
}

/* ============================================================
   RESET & BASE
============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--clr-bg);
  color: var(--clr-text);
  font-family: var(--ff-sans);
  font-size: 15px;
  line-height: 1.7;
  min-height: 100vh;
}
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* ============================================================
   SCROLLBAR
============================================================ */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--clr-surface); }
::-webkit-scrollbar-thumb { background: var(--clr-border); border-radius: 3px; }

/* ============================================================
   LAYOUT UTILITIES
============================================================ */
.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.section-label {
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--clr-accent2);
  margin-bottom: 10px;
}
.section-title {
  font-family: var(--ff-display);
  font-size: clamp(1.9rem, 4vw, 2.8rem);
  font-weight: 700;
  color: var(--clr-heading);
  margin-bottom: 48px;
  line-height: 1.15;
}

/* ============================================================
   ACCENT HELPERS
============================================================ */
.accent-robotics { color: var(--clr-accent1); }
.accent-ai       { color: var(--clr-accent2); }
.accent-web      { color: var(--clr-accent3); }

/* ============================================================
   NAV
============================================================ */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: var(--clr-bg);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--clr-border);
  padding: 14px 0;
}
.nav__inner { display: flex; align-items: center; justify-content: space-between; }
.nav__logo {
  font-family: var(--ff-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--clr-heading);
  letter-spacing: 0.01em;
}
.nav__logo span { color: var(--clr-accent2); }
.nav__links { display: flex; gap: 32px; }
.nav__links a {
  font-size: 13px;
  font-weight: 500;
  color: var(--clr-muted);
  transition: color var(--transition);
  position: relative;
}
.nav__links a::after {
  content: '';
  position: absolute; bottom: -2px; left: 0; right: 0; height: 1.5px;
  background: var(--clr-accent2);
  transform: scaleX(0); transform-origin: left;
  transition: transform var(--transition);
}
.nav__links a:hover { color: var(--clr-accent1); }
.nav__links a:hover::after { transform: scaleX(1); }
@media (max-width: 640px) { .nav__links { display: none; } }

/* ============================================================
   HERO
============================================================ */
.hero {
  min-height: 100vh;
  display: flex; align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: 80px;
  background: var(--clr-bg);
}
.hero__bg {
  position: absolute; inset: 0; z-index: 0;
  background: transparent;
}
/* Subtle linen texture via soft repeating pattern */
.hero__texture {
  position: absolute; inset: 0; z-index: 0; opacity: 0.25;
  background-image: none;
}
.hero__content { position: relative; z-index: 1; max-width: 780px; }

.hero__eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  background: rgba(139,69,19,0.08);
  border: 1px solid rgba(139,69,19,0.22);
  border-radius: 100px;
  padding: 6px 18px;
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--clr-accent1);
  margin-bottom: 28px;
  text-transform: uppercase;
}
.hero__eyebrow::before {
  content: '';
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--clr-accent2);
  animation: pulse 2.2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.35; transform: scale(0.55); }
}

.hero__name {
  font-family: var(--ff-display);
  font-size: clamp(3rem, 7.5vw, 5.6rem);
  font-weight: 700;
  color: var(--clr-heading);
  line-height: 1.0;
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}
.hero__name .highlight {
  background: linear-gradient(135deg, var(--clr-accent1) 0%, var(--clr-accent2) 50%, var(--clr-accent3) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__role {
  font-family: var(--ff-mono);
  font-size: 14px;
  color: var(--clr-muted);
  margin-bottom: 24px;
  letter-spacing: 0.04em;
}
.hero__role span { color: var(--clr-accent2); font-weight: 500; }

.hero__summary {
  font-size: 16px;
  color: #222222;
  max-width: 620px;
  line-height: 1.85;
  margin-bottom: 40px;
}

.hero__cta { display: flex; gap: 14px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 26px;
  border-radius: var(--radius-sm);
  font-family: var(--ff-sans);
  font-size: 14px; font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  letter-spacing: 0.01em;
}
.btn-primary {
  background: linear-gradient(135deg, var(--clr-accent1), var(--clr-accent2));
  color: #fff;
  box-shadow: 0 3px 16px rgba(139,69,19,0.28);
}
.btn-primary:hover { filter: brightness(1.08); transform: translateY(-2px); box-shadow: 0 6px 24px rgba(139,69,19,0.36); }
.btn-outline {
  background: transparent;
  color: var(--clr-accent1);
  border: 1.5px solid var(--clr-accent1);
}
.btn-outline:hover {
  background: rgba(139,69,19,0.06);
  transform: translateY(-2px);
}

.hero__socials { display: flex; gap: 14px; margin-top: 44px; align-items: center; }
.hero__socials span {
  font-family: var(--ff-mono);
  font-size: 11px;
  color: var(--clr-muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-right: 4px;
}
.social-link {
  width: 36px; height: 36px;
  border: 1.5px solid var(--clr-border);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  color: var(--clr-muted);
  transition: var(--transition);
  font-size: 13px;
  background: rgba(255,255,255,0.5);
}
.social-link:hover {
  border-color: var(--clr-accent2);
  color: var(--clr-accent2);
  background: rgba(192,98,42,0.07);
}

.hero__stats { display: flex; gap: 44px; margin-top: 52px; }
.stat__num {
  font-family: var(--ff-display);
  font-size: 2.2rem; font-weight: 700;
  color: var(--clr-heading); line-height: 1;
}
.stat__num span { color: var(--clr-accent2); }
.stat__label { font-size: 12px; color: var(--clr-muted); margin-top: 5px; letter-spacing: 0.03em; }

/* ============================================================
   CONTACT BAR
============================================================ */
.contact-bar {
  display: none;
}
.contact-bar__inner { display: flex; gap: 24px; align-items: center; flex-wrap: wrap; }
.contact-item {
  display: flex; align-items: center; gap: 9px;
  font-size: 13px; color: var(--clr-muted);
  padding: 0;
  border: none;
}
.contact-item:first-child { padding-left: 0; }
.contact-item:last-child { padding-right: 0; }
.contact-item svg { width: 14px; height: 14px; color: var(--clr-accent2); flex-shrink: 0; }
.contact-item a:hover { color: var(--clr-accent2); }

/* ============================================================
   DOMAIN CARDS
============================================================ */
.domains { padding: 64px 0; }
.domain-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
@media (max-width: 800px) { .domain-cards { grid-template-columns: 1fr; } }

.domain-card {
  background: var(--clr-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 30px 26px;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 2px 12px rgba(90,50,20,0.07);
}
.domain-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-hover); }

.domain-card__top-bar { position: absolute; top: 0; left: 0; right: 0; height: 4px; }
.domain-card--robotics .domain-card__top-bar { background: linear-gradient(90deg, var(--clr-accent1), #a0522d); }
.domain-card--ai .domain-card__top-bar       { background: linear-gradient(90deg, var(--clr-accent2), #d4783a); }
.domain-card--web .domain-card__top-bar      { background: linear-gradient(90deg, var(--clr-accent3), #f0a060); }

.domain-card__priority {
  font-family: var(--ff-mono);
  font-size: 10px; letter-spacing: 0.18em; text-transform: uppercase;
  opacity: 0.75; margin-bottom: 16px;
}
.domain-card--robotics .domain-card__priority { color: var(--clr-accent1); }
.domain-card--ai .domain-card__priority       { color: var(--clr-accent2); }
.domain-card--web .domain-card__priority      { color: var(--clr-accent3); }

.domain-card__icon { font-size: 2rem; margin-bottom: 12px; }
.domain-card__title {
  font-family: var(--ff-display);
  font-size: 1.12rem; font-weight: 700;
  color: var(--clr-heading); margin-bottom: 10px;
}
.domain-card__desc { font-size: 13px; color: var(--clr-muted); line-height: 1.7; }
.domain-card__tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 18px; }

/* TAGS */
.tag {
  font-family: var(--ff-mono);
  font-size: 10px; padding: 3px 10px;
  border-radius: 100px; letter-spacing: 0.04em;
}
.tag-robotics { background: rgba(139,69,19,0.09);  color: var(--clr-accent1); border: 1px solid rgba(139,69,19,0.22); }
.tag-ai       { background: rgba(192,98,42,0.09);  color: var(--clr-accent2); border: 1px solid rgba(192,98,42,0.22); }
.tag-web      { background: rgba(232,131,42,0.09); color: var(--clr-accent3); border: 1px solid rgba(232,131,42,0.22); }
.tag-neutral  { background: rgba(90,50,20,0.05);   color: var(--clr-muted);   border: 1px solid var(--clr-border); }

/* ============================================================
   EXPERIENCE
============================================================ */
.experience { background: var(--clr-surface); }
.timeline { position: relative; padding-left: 30px; }
.timeline::before {
  content: '';
  position: absolute; left: 0; top: 8px; bottom: 8px; width: 2px;
  background: linear-gradient(to bottom, var(--clr-accent1), var(--clr-accent2), var(--clr-accent3));
  border-radius: 1px;
}
.timeline-item { position: relative; margin-bottom: 44px; }
.timeline-item::before {
  content: '';
  position: absolute; left: -34px; top: 10px;
  width: 10px; height: 10px; border-radius: 50%;
  border: 2.5px solid var(--clr-surface);
}
.timeline-item--robotics::before { background: var(--clr-accent1); }
.timeline-item--ai::before       { background: var(--clr-accent2); }
.timeline-item--web::before      { background: var(--clr-accent3); }

.exp-card {
  background: var(--clr-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 26px;
  transition: border-color var(--transition), box-shadow var(--transition);
  box-shadow: 0 2px 10px rgba(90,50,20,0.06);
}
.exp-card:hover { border-color: var(--clr-accent2); box-shadow: var(--shadow); }

.exp-card__header {
  display: flex; justify-content: space-between; align-items: flex-start;
  flex-wrap: wrap; gap: 8px; margin-bottom: 4px;
}
.exp-card__company {
  font-family: var(--ff-display);
  font-size: 1.08rem; font-weight: 700; color: var(--clr-heading);
}
.exp-card__date {
  font-family: var(--ff-mono); font-size: 11px;
  color: var(--clr-muted); white-space: nowrap;
  background: rgba(139,69,19,0.06);
  padding: 3px 10px; border-radius: 100px;
  border: 1px solid var(--clr-border);
}
.exp-card__role { font-size: 13px; font-weight: 500; margin-bottom: 16px; margin-top: 2px; }
.exp-card__bullets { padding-left: 0; }
.exp-card__bullets li {
  display: flex; gap: 12px;
  font-size: 13.5px; color: #333333;
  margin-bottom: 9px; line-height: 1.68;
}
.exp-card__bullets li::before {
  content: '▸'; font-size: 10px;
  color: var(--clr-accent2); margin-top: 5px; flex-shrink: 0;
}
.exp-card__link {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--ff-mono); font-size: 11px;
  color: var(--clr-accent2); margin-top: 14px;
  border-bottom: 1px solid rgba(192,98,42,0.35);
  padding-bottom: 1px; transition: opacity var(--transition);
}
.exp-card__link:hover { opacity: 0.7; }

/* ============================================================
   PROJECTS
============================================================ */
.project-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
@media (max-width: 720px) { .project-grid { grid-template-columns: 1fr; } }

.project-card {
  background: var(--clr-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 26px;
  position: relative; overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  box-shadow: 0 2px 10px rgba(90,50,20,0.06);
}
.project-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.project-card--robotics:hover { border-color: rgba(139,69,19,0.45); }
.project-card--ai:hover       { border-color: rgba(192,98,42,0.45); }

.project-card__glow {
  position: absolute; top: -48px; right: -48px;
  width: 130px; height: 130px; border-radius: 50%;
  filter: blur(36px); pointer-events: none; opacity: 0.12;
}
.project-card--robotics .project-card__glow { background: var(--clr-accent1); }
.project-card--ai .project-card__glow       { background: var(--clr-accent2); }

.project-card__label {
  font-family: var(--ff-mono); font-size: 10px;
  letter-spacing: 0.15em; text-transform: uppercase; margin-bottom: 12px;
}
.project-card--robotics .project-card__label { color: var(--clr-accent1); }
.project-card--ai .project-card__label       { color: var(--clr-accent2); }

.project-card__title {
  font-family: var(--ff-display);
  font-size: 1.12rem; font-weight: 700;
  color: var(--clr-heading); margin-bottom: 10px;
}
.project-card__desc { font-size: 13px; color: #333333; line-height: 1.74; margin-bottom: 18px; }
.project-card__tech { display: flex; flex-wrap: wrap; gap: 6px; }

/* ============================================================
   SKILLS
============================================================ */
.skills-wrapper { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
@media (max-width: 720px) { .skills-wrapper { grid-template-columns: 1fr; } }

.skills-group {
  background: var(--clr-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: 0 2px 10px rgba(90,50,20,0.05);
}
.skills-group__title {
  font-family: var(--ff-mono); font-size: 11px;
  letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--clr-accent2); margin-bottom: 16px;
  display: flex; align-items: center; gap: 10px;
}
.skills-group__title::before {
  content: ''; width: 18px; height: 1.5px;
  background: var(--clr-accent2); border-radius: 1px;
}
.skill-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.skill-chip {
  font-family: var(--ff-mono); font-size: 11px;
  padding: 5px 12px; border-radius: var(--radius-sm);
  background: rgba(139,69,19,0.05);
  border: 1px solid var(--clr-border);
  color: var(--clr-text); transition: var(--transition);
}
.skill-chip:hover {
  background: rgba(192,98,42,0.10);
  border-color: rgba(192,98,42,0.38);
  color: var(--clr-accent2);
}
.skill-chip.hw { border-style: dashed; color: var(--clr-muted); }
.skill-chip.hw:hover {
  color: var(--clr-accent1); border-color: rgba(139,69,19,0.5); border-style: solid;
}

/* ============================================================
   EDUCATION
============================================================ */
.education { background: var(--clr-surface); }
.edu-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
@media (max-width: 640px) { .edu-grid { grid-template-columns: 1fr; } }

.edu-card {
  background: var(--clr-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 26px;
  box-shadow: 0 2px 10px rgba(90,50,20,0.06);
}
.edu-card__badge {
  display: inline-block;
  background: rgba(139,69,19,0.08);
  border: 1px solid rgba(139,69,19,0.2);
  color: var(--clr-accent1);
  font-family: var(--ff-mono); font-size: 10px;
  padding: 3px 12px; border-radius: 100px;
  letter-spacing: 0.1em; margin-bottom: 14px;
}
.edu-card__name {
  font-family: var(--ff-display);
  font-size: 1.05rem; font-weight: 700;
  color: var(--clr-heading); margin-bottom: 4px;
}
.edu-card__inst { font-size: 13px; color: var(--clr-muted); margin-bottom: 14px; line-height: 1.5; }
.edu-card__score {
  font-family: var(--ff-display);
  font-size: 1.8rem; font-weight: 700; color: var(--clr-accent2);
}
.edu-card__year { font-size: 12px; color: var(--clr-muted); margin-top: 4px; }

/* ============================================================
   CERTIFICATION
============================================================ */
.cert-card {
  background: var(--clr-card);
  border: 1px solid var(--clr-border);
  border-left: 4px solid var(--clr-accent2);
  border-radius: var(--radius);
  padding: 26px; margin-bottom: 20px;
  box-shadow: 0 2px 10px rgba(90,50,20,0.06);
}
.cert-card__title {
  font-family: var(--ff-display);
  font-size: 1.05rem; font-weight: 700;
  color: var(--clr-heading); margin-bottom: 14px;
}
.cert-card__bullets { padding-left: 0; }
.cert-card__bullets li {
  display: flex; gap: 10px;
  font-size: 13.5px; color: #333333;
  margin-bottom: 9px; line-height: 1.68;
}
.cert-card__bullets li::before {
  content: '◆'; font-size: 7px;
  color: var(--clr-accent2); margin-top: 7px; flex-shrink: 0;
}

/* ============================================================
   ACHIEVEMENTS
============================================================ */
.achievements { background: var(--clr-surface); }
.ach-cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
@media (max-width: 640px) { .ach-cards { grid-template-columns: 1fr; } }

.ach-card {
  background: var(--clr-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 22px 24px;
  display: flex; gap: 16px; align-items: flex-start;
  box-shadow: 0 2px 10px rgba(90,50,20,0.05);
  transition: box-shadow var(--transition), border-color var(--transition);
}
.ach-card:hover { box-shadow: var(--shadow); border-color: var(--clr-accent3); }
.ach-icon { font-size: 1.8rem; flex-shrink: 0; line-height: 1; }
.ach-text { font-size: 14px; color: var(--clr-text); }
.ach-text strong { color: var(--clr-heading); display: block; margin-bottom: 5px; font-weight: 600; }

/* ============================================================
   FOOTER
============================================================ */
footer {
  background: #e8d4bc;
  border-top: 1px solid var(--clr-border);
  padding: 48px 0; text-align: center;
}
.footer__ornament {
  font-size: 1.5rem; margin-bottom: 12px; opacity: 0.5;
}
.footer__name {
  font-family: var(--ff-display);
  font-size: 1.3rem; font-weight: 700;
  color: var(--clr-heading); margin-bottom: 6px;
}
.footer__tagline { font-size: 13px; color: var(--clr-muted); margin-bottom: 28px; }
.footer__links { display: flex; justify-content: center; gap: 28px; flex-wrap: wrap; }
.footer__links a { font-size: 13px; color: var(--clr-muted); transition: color var(--transition); }
.footer__links a:hover { color: var(--clr-accent2); }
.footer__copy { font-size: 11px; color: #b8967a; margin-top: 28px; }

/* ============================================================
   DIVIDER
============================================================ */
.divider {
  display: none;
}

/* ============================================================
   ANIMATIONS
============================================================ */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(22px); }
  to   { opacity: 1; transform: translateY(0); }
}
.hero__content > * { animation: fadeUp 0.65s ease both; }
.hero__eyebrow { animation-delay: 0.10s; }
.hero__name    { animation-delay: 0.20s; }
.hero__role    { animation-delay: 0.30s; }
.hero__summary { animation-delay: 0.38s; }
.hero__cta     { animation-delay: 0.46s; }
.hero__socials { animation-delay: 0.54s; }
.hero__stats   { animation-delay: 0.62s; }

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}

*, *::before, *::after { cursor: none !important; }
#vfx-canvas {
  position: fixed; inset: 0;
  width: 100vw; height: 100vh;
  pointer-events: none;
  z-index: 99999;
}