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

/* ── TOKENS ─────────────────────────────────────────────────────── */
:root {
  --bg:      #080808;
  --bg-alt:  #0d0d0d;
  --surface: #131313;
  --brd:     rgba(255,255,255,0.06);
  --brd-h:   rgba(255,255,255,0.12);
  --txt:     #f0f0f0;
  --txt-2:   #888;
  --txt-3:   #444;
  --accent:  #6366f1;
  --accent-l:#818cf8;
  --r:       8px;
  --r-lg:    12px;
  --ease:    200ms ease;
}

/* ── BASE ───────────────────────────────────────────────────────── */
html {
  scroll-behavior: smooth;
  scroll-padding-top: 68px;
}

body {
  background: var(--bg);
  color: var(--txt);
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a  { text-decoration: none; }
ul { list-style: none; }

/* ── UTILITIES ──────────────────────────────────────────────────── */
.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 28px;
}

.text-gradient {
  display: block;
  background: linear-gradient(110deg, var(--accent) 0%, var(--accent-l) 55%, #c4b5fd 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.label {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
}

.heading {
  font-size: clamp(26px, 3.8vw, 40px);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.15;
  color: var(--txt);
  margin-bottom: 20px;
}

.body-text {
  font-size: 15px;
  color: var(--txt-2);
  line-height: 1.8;
  margin-bottom: 14px;
}

.muted { color: var(--txt-3); font-size: 14px; }
.dot   { color: var(--txt-3); }

.link {
  font-size: 14px;
  color: var(--accent-l);
  transition: color var(--ease);
}
.link:hover { color: var(--txt); }

/* no-js: keep elements visible if JS fails to load */
.no-js .reveal { opacity: 1; transform: none; }

/* ── BUTTONS ────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: inherit;
  font-weight: 500;
  border: none;
  border-radius: var(--r);
  cursor: pointer;
  transition: all var(--ease);
  white-space: nowrap;
}

.btn--sm { padding: 6px 14px; font-size: 13px; }
.btn--lg { padding: 13px 26px; font-size: 15px; }

.btn--primary {
  background: var(--accent);
  color: #fff;
}
.btn--primary:hover {
  background: var(--accent-l);
  transform: translateY(-1px);
  box-shadow: 0 8px 28px rgba(99,102,241,0.28);
}

.btn--ghost {
  background: transparent;
  color: var(--txt-2);
  border: 1px solid var(--brd-h);
}
.btn--ghost:hover {
  background: var(--surface);
  color: var(--txt);
  border-color: rgba(255,255,255,0.2);
}

/* ── NAV ────────────────────────────────────────────────────────── */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  padding: 18px 0;
  border-bottom: 1px solid transparent;
  transition: background var(--ease), border-color var(--ease), padding var(--ease);
}

.nav.scrolled {
  background: rgba(8,8,8,0.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-color: var(--brd);
  padding: 12px 0;
}

.nav__inner {
  display: flex;
  align-items: center;
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 28px;
  gap: 8px;
}

.nav__logo {
  font-weight: 700;
  font-size: 17px;
  letter-spacing: -0.04em;
  color: var(--txt);
  margin-right: auto;
}

.nav__links {
  display: flex;
  gap: 24px;
  margin-right: 16px;
}

.nav__links a {
  font-size: 14px;
  font-weight: 450;
  color: var(--txt-2);
  transition: color var(--ease);
}
.nav__links a:hover,
.nav__links a.active { color: var(--txt); }

/* burger */
.nav__burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  padding: 7px;
  background: none;
  border: none;
  cursor: pointer;
}
.nav__burger span {
  display: block;
  width: 100%;
  height: 1.5px;
  background: var(--txt);
  border-radius: 1px;
  transition: transform 0.25s ease, opacity 0.25s ease;
  transform-origin: center;
}
.nav__burger.open span:first-child { transform: translateY(3.25px) rotate(45deg); }
.nav__burger.open span:last-child  { transform: translateY(-3.25px) rotate(-45deg); }

/* mobile menu */
.nav__mobile {
  display: none;
  flex-direction: column;
  padding: 8px 28px 20px;
  border-top: 1px solid var(--brd);
}
.nav__mobile.open { display: flex; }
.nav__mobile a {
  font-size: 15px;
  font-weight: 500;
  color: var(--txt-2);
  padding: 12px 0;
  border-bottom: 1px solid var(--brd);
  transition: color var(--ease);
}
.nav__mobile a:last-child { border-bottom: none; }
.nav__mobile a:hover { color: var(--txt); }

/* lang toggle */
.lang-toggle {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.07em;
  color: var(--txt-3);
  background: none;
  border: 1px solid var(--brd);
  border-radius: var(--r);
  padding: 5px 9px;
  cursor: pointer;
  transition: border-color var(--ease);
  margin-right: 4px;
  font-family: inherit;
}
.lang-toggle:hover { border-color: var(--brd-h); }
.lang-toggle [data-lang] { transition: color var(--ease); }
.lang-toggle [data-lang].active { color: var(--txt); }
.lang-sep { color: var(--txt-3); }

@media (max-width: 720px) {
  .nav__links, .nav__cta { display: none; }
  .nav__burger { display: flex; }
  .lang-toggle { margin-right: 0; }
}

/* ── HERO ───────────────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background-image: radial-gradient(rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 32px 32px;
}

.hero__glow {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
}
.glow--1 {
  width: 680px;
  height: 680px;
  background: rgba(99,102,241,0.16);
  top: -260px;
  right: -80px;
  animation: drift 14s ease-in-out infinite;
}
.glow--2 {
  width: 480px;
  height: 480px;
  background: rgba(167,139,250,0.09);
  bottom: -180px;
  left: -120px;
  animation: drift 18s ease-in-out infinite reverse;
}

@keyframes drift {
  0%, 100% { transform: translate(0, 0); }
  50%       { transform: translate(28px, -28px); }
}

.hero__content {
  position: relative;
  z-index: 1;
  padding-top: 80px;
  padding-bottom: 80px;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 500;
  color: var(--txt-2);
  background: var(--bg-alt);
  border: 1px solid var(--brd);
  border-radius: 100px;
  padding: 5px 14px 5px 10px;
  margin-bottom: 36px;
  animation: fadeUp 0.5s ease both;
}

.badge__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #22c55e;
  box-shadow: 0 0 0 2px rgba(34,197,94,0.2);
  flex-shrink: 0;
  animation: blink 2.5s ease-in-out infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.35; }
}

.hero__heading {
  font-size: clamp(42px, 8vw, 78px);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.05;
  margin-bottom: 24px;
  animation: fadeUp 0.5s 0.08s ease both;
}

.hero__sub {
  font-size: clamp(15px, 2vw, 18px);
  color: var(--txt-2);
  line-height: 1.65;
  max-width: 500px;
  margin-bottom: 40px;
  animation: fadeUp 0.5s 0.16s ease both;
}

.hero__cta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  animation: fadeUp 0.5s 0.24s ease both;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── SECTIONS ───────────────────────────────────────────────────── */
.section     { padding: 120px 0; }
.section--alt { background: var(--bg-alt); }
.section__top { margin-bottom: 56px; }

@media (max-width: 720px) {
  .section { padding: 80px 0; }
}

/* ── ABOUT ──────────────────────────────────────────────────────── */
.about__layout {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 80px;
  align-items: start;
}

@media (max-width: 760px) {
  .about__layout { grid-template-columns: 1fr; gap: 48px; }
}

.about__meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 28px;
}

.about__stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.stat {
  background: var(--surface);
  border: 1px solid var(--brd);
  border-radius: var(--r-lg);
  padding: 22px 18px;
  display: flex;
  flex-direction: column;
  gap: 5px;
  transition: border-color var(--ease), transform 0.25s ease;
}
.stat:hover {
  border-color: var(--brd-h);
  transform: translateY(-2px);
}

.stat__n {
  font-size: 30px;
  font-weight: 700;
  letter-spacing: -0.04em;
}
.stat__l {
  font-size: 12px;
  color: var(--txt-2);
}

/* stagger stats */
.about__stats .stat:nth-child(2) { transition-delay: 0.07s; }
.about__stats .stat:nth-child(3) { transition-delay: 0.14s; }
.about__stats .stat:nth-child(4) { transition-delay: 0.21s; }

/* ── SKILLS ─────────────────────────────────────────────────────── */
.skills__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 48px 64px;
}

@media (max-width: 560px) {
  .skills__grid { grid-template-columns: 1fr; gap: 36px; }
}

/* stagger skill cols */
.skills__grid .skill-col:nth-child(2) { transition-delay: 0.08s; }
.skills__grid .skill-col:nth-child(3) { transition-delay: 0.16s; }
.skills__grid .skill-col:nth-child(4) { transition-delay: 0.24s; }

.skill-col__name {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--txt-3);
  margin-bottom: 16px;
}

/* Skill items with icons */
.skill-items {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.skill-item {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 13px;
  font-weight: 450;
  color: var(--txt-2);
  background: var(--surface);
  border: 1px solid var(--brd);
  border-radius: var(--r);
  padding: 7px 12px;
  transition: color var(--ease), border-color var(--ease), background var(--ease);
}
.skill-item:hover {
  color: var(--txt);
  border-color: var(--brd-h);
  background: #1c1c1c;
}
.skill-item__ico {
  width: 17px;
  height: 17px;
  object-fit: contain;
  flex-shrink: 0;
}

/* Tech tags (project cards) */
.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.tags--sm .tag {
  font-size: 11px;
  padding: 3px 10px;
}

.tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 450;
  color: var(--txt-2);
  background: var(--surface);
  border: 1px solid var(--brd);
  border-radius: 100px;
  padding: 5px 13px;
  transition: color var(--ease), border-color var(--ease);
}
.tag:hover {
  color: var(--txt);
  border-color: var(--brd-h);
}

/* ── CARD COVER ─────────────────────────────────────────────────── */
.card { overflow: hidden; }

.card__cover {
  margin: -24px -24px 20px;
  height: 128px;
  background: linear-gradient(135deg, var(--c1, #111), var(--c2, #1a1a1a));
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  position: relative;
}
.card__cover::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 18px 18px;
  pointer-events: none;
}
.cover__ico {
  width: 40px;
  height: 40px;
  object-fit: contain;
  position: relative;
  z-index: 1;
  filter: drop-shadow(0 2px 10px rgba(0,0,0,0.5));
}

/* ── PROJECTS ───────────────────────────────────────────────────── */
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

@media (max-width: 860px) { .cards { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 540px) { .cards { grid-template-columns: 1fr; } }

/* stagger cards */
.cards .card:nth-child(2) { transition-delay: 0.08s; }
.cards .card:nth-child(3) { transition-delay: 0.16s; }

.card {
  background: var(--bg-alt);
  border: 1px solid var(--brd);
  border-radius: var(--r-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: border-color var(--ease), transform 0.28s ease, box-shadow 0.28s ease;
}
.card:hover {
  border-color: var(--brd-h);
  transform: translateY(-4px);
  box-shadow: 0 20px 48px rgba(0,0,0,0.5);
}

.card__top {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.card__ico {
  font-size: 22px;
  line-height: 1;
  color: var(--accent);
}

.card__actions {
  display: flex;
  gap: 12px;
}

.icon-link {
  display: flex;
  align-items: center;
  color: var(--txt-3);
  transition: color var(--ease);
}
.icon-link:hover { color: var(--txt); }

.card__company {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--txt-3);
}

.card__title {
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.card__desc {
  font-size: 14px;
  color: var(--txt-2);
  line-height: 1.7;
  flex: 1;
}

.projects__footer {
  margin-top: 48px;
  display: flex;
  justify-content: center;
}

/* ── CONTACT ────────────────────────────────────────────────────── */
.contact__wrap {
  text-align: center;
  max-width: 520px;
  margin: 0 auto;
}

.contact__desc { margin-bottom: 36px; }

.contact__links {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-top: 28px;
}

.social {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 14px;
  font-weight: 500;
  color: var(--txt-3);
  transition: color var(--ease);
}
.social:hover { color: var(--txt); }

/* ── FOOTER ─────────────────────────────────────────────────────── */
.footer {
  border-top: 1px solid var(--brd);
  padding: 28px 0;
}
.footer p {
  text-align: center;
  font-size: 13px;
  color: var(--txt-3);
}

/* ── REVEAL ─────────────────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}
.reveal.in {
  opacity: 1;
  transform: translateY(0);
}

/* ── HERO SCROLL INDICATOR ───────────────────────────────────────── */
.hero__scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  color: var(--txt-3);
  z-index: 1;
  animation: scrollBounce 2.2s ease-in-out infinite;
}

@keyframes scrollBounce {
  0%, 100% { transform: translateX(-50%) translateY(0);   opacity: 0.35; }
  50%       { transform: translateX(-50%) translateY(7px); opacity: 0.7;  }
}

/* ── TIMELINE (Expérience) ───────────────────────────────────────── */
.timeline {
  position: relative;
  display: flex;
  flex-direction: column;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 148px;
  top: 14px;
  bottom: 14px;
  width: 1px;
  background: var(--brd);
}

.timeline__item {
  display: grid;
  grid-template-columns: 148px 1fr;
  gap: 0 48px;
  padding: 36px 0;
  position: relative;
}
.timeline__item + .timeline__item {
  border-top: 1px solid var(--brd);
}

.timeline__item::before {
  content: '';
  position: absolute;
  left: 148px;
  top: 42px;
  width: 7px;
  height: 7px;
  background: var(--accent);
  border-radius: 50%;
  transform: translateX(-3px);
  box-shadow: 0 0 0 3px rgba(99,102,241,0.18);
  z-index: 1;
}

.timeline__date {
  font-size: 12px;
  font-weight: 500;
  color: var(--txt-3);
  padding-top: 3px;
  text-align: right;
  padding-right: 24px;
  line-height: 1.6;
}

.timeline__co {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 6px;
}

.timeline__role {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--txt);
  margin-bottom: 10px;
}

.timeline__desc {
  font-size: 14px;
  color: var(--txt-2);
  line-height: 1.75;
  margin-bottom: 14px;
  max-width: 560px;
}

@media (max-width: 640px) {
  .timeline::before          { display: none; }
  .timeline__item            { grid-template-columns: 1fr; gap: 6px; }
  .timeline__item::before    { display: none; }
  .timeline__date            { text-align: left; padding-right: 0; }
}

/* ── CONTACT ACTIONS ─────────────────────────────────────────────── */
.contact__actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 0;
}

/* ── FOOTER (enhanced) ───────────────────────────────────────────── */
.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer__links {
  display: flex;
  gap: 20px;
}

.footer__links a {
  font-size: 13px;
  color: var(--txt-3);
  transition: color var(--ease);
}
.footer__links a:hover { color: var(--txt); }

@media (max-width: 540px) {
  .footer__inner { flex-direction: column; gap: 12px; text-align: center; }
}