/* ─── Reset & Base ─────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --navy:    #0D1B2A;
  --navy-2:  #122236;
  --navy-3:  #1A3050;
  --accent:  #4ECDC4;
  --accent2: #45B7D1;
  --white:   #FFFFFF;
  --off:     #F4F7FA;
  --text:    #1A1A2E;
  --muted:   #64748B;
  --border:  #E2E8F0;
  --mono:    'JetBrains Mono', monospace;
  --sans:    'Inter', sans-serif;
  --radius:  12px;
  --shadow:  0 4px 24px rgba(0,0,0,.08);
  --shadow-lg: 0 12px 48px rgba(0,0,0,.14);
  --transition: .25s cubic-bezier(.4,0,.2,1);
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  color: var(--text);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { display: block; max-width: 100%; }

.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 2rem;
}

.mono { font-family: var(--mono); }
.accent { color: var(--accent); }
.slash { color: var(--accent); }
.dot   { color: var(--accent); }


/* ─── NAV ────────────────────────────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: transparent;
  transition: background var(--transition), box-shadow var(--transition);
}
.nav.scrolled {
  background: rgba(13,27,42,.95);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 rgba(255,255,255,.06);
}
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 2rem;
}
.nav__logo {
  font-family: var(--mono);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: .05em;
}
.nav__links {
  display: flex;
  gap: 2rem;
  align-items: center;
}
.nav__links a {
  color: rgba(255,255,255,.75);
  font-size: .875rem;
  font-weight: 500;
  transition: color var(--transition);
}
.nav__links a:hover { color: var(--accent); }
.nav__cta {
  background: var(--accent) !important;
  color: var(--navy) !important;
  padding: .4rem 1.1rem;
  border-radius: 6px;
  font-weight: 600 !important;
  transition: opacity var(--transition) !important;
}
.nav__cta:hover { opacity: .85; }
.nav__right {
  display: flex;
  align-items: center;
  gap: .75rem;
}
.nav__burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav__burger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: var(--transition);
}

/* ─── LANGUAGE TOGGLE ─────────────────────────────────────────────────── */
.lang-toggle {
  display: flex;
  align-items: center;
  gap: .35rem;
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.15);
  border-radius: 99px;
  padding: .3rem .75rem;
  cursor: pointer;
  transition: all var(--transition);
  color: rgba(255,255,255,.8);
  font-family: var(--mono);
  font-size: .75rem;
  font-weight: 500;
  letter-spacing: .05em;
}
.lang-toggle:hover {
  background: rgba(78,205,196,.15);
  border-color: var(--accent);
  color: var(--accent);
}
.lang-toggle__flag { font-size: .9rem; line-height: 1; }
.lang-toggle__label { line-height: 1; }


/* ─── HERO ───────────────────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--navy);
  overflow: hidden;
  padding-top: 64px;
}
.hero__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(78,205,196,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(78,205,196,.06) 1px, transparent 1px);
  background-size: 48px 48px;
}
.hero__bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 70% 60% at 60% 40%, rgba(78,205,196,.12) 0%, transparent 70%);
}
.hero__content {
  position: relative;
  z-index: 1;
  padding: 6rem 2rem 5rem;
  max-width: 820px;
}
.hero__label {
  font-size: .75rem;
  color: var(--accent);
  letter-spacing: .1em;
  text-transform: uppercase;
  margin-bottom: 1.25rem;
}
.hero__name {
  font-size: clamp(3rem, 7vw, 5.5rem);
  font-weight: 700;
  color: var(--white);
  line-height: 1.05;
  letter-spacing: -.02em;
  margin-bottom: .75rem;
}
.hero__title {
  font-size: clamp(1rem, 2.5vw, 1.35rem);
  font-weight: 400;
  color: rgba(255,255,255,.65);
  margin-bottom: 1.75rem;
}
.hero__bio {
  font-size: 1.05rem;
  color: rgba(255,255,255,.72);
  line-height: 1.75;
  max-width: 620px;
  margin-bottom: 2rem;
}
.hero__bio strong { color: var(--accent); font-weight: 600; }
.hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: .625rem;
  margin-bottom: 2.25rem;
}
.hero__tags span {
  background: rgba(78,205,196,.12);
  border: 1px solid rgba(78,205,196,.25);
  color: var(--accent);
  padding: .3rem .85rem;
  border-radius: 99px;
  font-size: .8125rem;
  font-family: var(--mono);
}
.hero__actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 3.5rem;
}
.hero__stats {
  display: flex;
  gap: 3rem;
  flex-wrap: wrap;
  padding-top: 2.5rem;
  border-top: 1px solid rgba(255,255,255,.1);
}
.stat__n {
  display: block;
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
  font-family: var(--mono);
  line-height: 1;
}
.stat__l {
  display: block;
  font-size: .8125rem;
  color: rgba(255,255,255,.5);
  margin-top: .25rem;
}


/* ─── BUTTONS ────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .75rem 1.75rem;
  border-radius: 8px;
  font-size: .9375rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  border: 2px solid transparent;
}
.btn--primary {
  background: var(--accent);
  color: var(--navy);
  border-color: var(--accent);
}
.btn--primary:hover { background: #3bbbb3; border-color: #3bbbb3; transform: translateY(-1px); }
.btn--outline {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,.3);
}
.btn--outline:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-1px); }
.btn--lg { padding: .9rem 2.25rem; font-size: 1rem; }


/* ─── SECTIONS ───────────────────────────────────────────────────────── */
.section { padding: 6rem 0; }
.section--dark { background: var(--navy); color: var(--white); }
.section--alt  { background: var(--off); }

.section__header { margin-bottom: 3rem; }
.section__header--center { text-align: center; }
.section__label {
  font-size: .72rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--accent);
  display: block;
  margin-bottom: .6rem;
}
.section__title {
  font-size: clamp(1.6rem, 3vw, 2.25rem);
  font-weight: 700;
  letter-spacing: -.02em;
  line-height: 1.15;
}
.section--dark .section__title { color: var(--white); }


/* ─── SKILLS ─────────────────────────────────────────────────────────── */
.skills__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
}
.skill-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.skill-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  opacity: 0;
  transition: opacity var(--transition);
}
.skill-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-3px); }
.skill-card:hover::before { opacity: 1; }
.skill-card--highlight {
  background: var(--navy);
  border-color: rgba(78,205,196,.2);
}
.skill-card--highlight::before { opacity: 1; }
.skill-card__icon {
  font-size: 1.5rem;
  margin-bottom: .75rem;
  color: var(--accent);
  display: block;
}
/* ── base card text – light cards only ── */
.skill-card:not(.skill-card--highlight) h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: .875rem;
  color: var(--text);
}
/* ── highlight card text – must come after base ── */
.skill-card--highlight h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: .875rem;
  color: #ffffff;
}
.skill-card li {
  font-size: .875rem;
  color: var(--muted);
  padding: .25rem 0;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: .5rem;
}
.skill-card--highlight li {
  color: rgba(255,255,255,.75);
  border-color: rgba(255,255,255,.08);
}
.skill-card li:last-child { border-bottom: none; }
.skill-card li::before {
  content: '';
  width: 5px; height: 5px;
  background: var(--accent);
  border-radius: 50%;
  flex-shrink: 0;
}


/* ─── ACHIEVEMENTS ───────────────────────────────────────────────────── */
.achievements__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
}
.achievement {
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--radius);
  padding: 2rem;
  position: relative;
  transition: all var(--transition);
}
.achievement:hover {
  background: rgba(78,205,196,.06);
  border-color: rgba(78,205,196,.25);
  transform: translateY(-2px);
}
.achievement__number {
  font-family: var(--mono);
  font-size: .7rem;
  color: var(--accent);
  opacity: .6;
  letter-spacing: .1em;
  margin-bottom: .875rem;
}
.achievement h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: .625rem;
  line-height: 1.35;
}
.achievement p {
  font-size: .875rem;
  color: rgba(255,255,255,.6);
  line-height: 1.7;
}
.achievement strong { color: var(--accent); font-weight: 500; }


/* ─── TIMELINE ───────────────────────────────────────────────────────── */
.timeline {
  position: relative;
  padding-left: 2rem;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--accent) 0%, var(--border) 100%);
}
.timeline__item {
  position: relative;
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 2rem;
  padding-bottom: 3rem;
}
.timeline__item::before {
  content: '';
  position: absolute;
  left: -2.375rem;
  top: 7px;
  width: 10px; height: 10px;
  background: var(--accent);
  border-radius: 50%;
  border: 2px solid var(--white);
  box-shadow: 0 0 0 3px rgba(78,205,196,.2);
}
.timeline__item:last-child { padding-bottom: 0; }
.timeline__meta { padding-top: .125rem; }
.timeline__date {
  display: block;
  font-size: .75rem;
  color: var(--accent);
  letter-spacing: .05em;
  margin-bottom: .35rem;
}
.timeline__company {
  display: block;
  font-weight: 700;
  font-size: .9375rem;
  color: var(--text);
  margin-bottom: .2rem;
}
.timeline__location {
  display: block;
  font-size: .8125rem;
  color: var(--muted);
}
.timeline__via {
  font-size: .75rem;
  color: var(--muted);
  font-weight: 400;
  font-style: italic;
}
.timeline__badge {
  display: inline-block;
  margin-top: .45rem;
  background: rgba(78,205,196,.15);
  border: 1px solid rgba(78,205,196,.35);
  color: var(--accent);
  font-size: .7rem;
  font-family: var(--mono);
  letter-spacing: .08em;
  text-transform: uppercase;
  padding: .15rem .6rem;
  border-radius: 99px;
}
.timeline__item--current::before {
  background: var(--accent);
  box-shadow: 0 0 0 4px rgba(78,205,196,.25), 0 0 12px rgba(78,205,196,.4);
  width: 12px;
  height: 12px;
  left: -2.45rem;
  top: 6px;
}
.timeline__role {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: .875rem;
}
.timeline__body li {
  font-size: .9rem;
  color: var(--muted);
  line-height: 1.65;
  padding: .3rem 0;
  padding-left: 1rem;
  position: relative;
}
.timeline__body li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: .75rem;
  top: .38rem;
}
.timeline__body strong { color: var(--text); font-weight: 600; }
.timeline__stack {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
  margin-top: 1rem;
}
.timeline__stack span {
  background: var(--off);
  border: 1px solid var(--border);
  color: var(--muted);
  font-size: .75rem;
  font-family: var(--mono);
  padding: .2rem .6rem;
  border-radius: 4px;
}


/* ─── EDUCATION & CERTS ──────────────────────────────────────────────── */
.edu__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}
.edu__list, .cert__list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}
.edu__item {
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
}
.edu__year {
  font-size: .8125rem;
  color: var(--accent);
  min-width: 42px;
  padding-top: .2rem;
  letter-spacing: .05em;
}
.edu__item h3 {
  font-size: .9375rem;
  font-weight: 600;
  margin-bottom: .2rem;
}
.edu__item p {
  font-size: .875rem;
  color: var(--muted);
  line-height: 1.55;
}
.cert {
  display: flex;
  align-items: flex-start;
  gap: 1.125rem;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.125rem 1.25rem;
  box-shadow: var(--shadow);
  transition: all var(--transition);
}
.cert:hover { box-shadow: var(--shadow-lg); transform: translateY(-2px); }
.cert__badge {
  width: 38px; height: 38px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: .75rem;
  color: var(--navy);
  flex-shrink: 0;
}
.cert h3 { font-size: .9375rem; font-weight: 600; margin-bottom: .15rem; }
.cert p  { font-size: .8125rem; color: var(--muted); }


/* ─── CONTACT ────────────────────────────────────────────────────────── */
.contact__inner { text-align: center; }
.contact__sub {
  font-size: 1.05rem;
  color: rgba(255,255,255,.6);
  max-width: 540px;
  margin: 1rem auto 2.5rem;
  line-height: 1.75;
}
.contact__links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}
.contact__item {
  display: flex;
  align-items: center;
  gap: .625rem;
  color: rgba(255,255,255,.75);
  font-size: .9375rem;
  transition: color var(--transition);
}
.contact__item:hover { color: var(--accent); }
.contact__icon {
  width: 36px; height: 36px;
  background: rgba(78,205,196,.12);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .875rem;
  color: var(--accent);
  flex-shrink: 0;
}


/* ─── FOOTER ─────────────────────────────────────────────────────────── */
.footer {
  background: var(--navy-2);
  padding: 1.5rem 0;
  border-top: 1px solid rgba(255,255,255,.06);
}
.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: .8rem;
  color: rgba(255,255,255,.35);
}


/* ─── SCROLL ANIMATIONS ──────────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .55s ease, transform .55s ease;
}
.reveal.visible {
  opacity: 1;
  transform: none;
}


/* ─── RESPONSIVE ─────────────────────────────────────────────────────── */
@media (max-width: 900px) {
  .timeline__item { grid-template-columns: 1fr; gap: .5rem; }
  .edu__grid      { grid-template-columns: 1fr; gap: 3rem; }
  .nav__links     { display: none; }
  .nav__burger    { display: flex; }

  .nav__links.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    inset: 64px 0 0;
    background: rgba(13,27,42,.97);
    align-items: center;
    justify-content: center;
    gap: 2rem;
    z-index: 99;
  }
  .nav__links.open a { font-size: 1.25rem; }
}

@media (max-width: 680px) {
  .lang-toggle__label { display: none; }
}

@media (max-width: 600px) {
  .hero__stats   { gap: 1.75rem; }
  .section       { padding: 4rem 0; }
  .achievements__grid { grid-template-columns: 1fr; }
  .footer__inner { flex-direction: column; gap: .5rem; text-align: center; }
}