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

:root {
  --bg:        #0b0b0f;
  --bg-2:      #111117;
  --bg-3:      #16161e;
  --border:    rgba(255,255,255,.07);
  --text:      #e8e8f0;
  --text-muted:#7a7a95;
  --accent:    #6c63ff;
  --accent-2:  #a78bfa;
  --white:     #ffffff;
  --radius:    12px;
  --radius-lg: 20px;
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-display: 'Manrope', system-ui, sans-serif;
  --transition: .25s cubic-bezier(.4,0,.2,1);
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: 100px 0; }

.desktop-only { display: none; }
@media(min-width:768px){ .desktop-only{ display:inline; } }

/* ─── Typography helpers ─── */
.section__tag {
  display: inline-block;
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--accent-2);
  margin-bottom: 16px;
}

.section__title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 700;
  color: var(--white);
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}

.section__sub {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 520px;
}

.section__header {
  text-align: center;
  margin-bottom: 64px;
}
.section__header .section__sub { margin: 0 auto; }

/* ─── Buttons ─── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: 8px;
  font-size: .93rem;
  font-weight: 500;
  text-decoration: none;
  transition: var(--transition);
  cursor: pointer;
  border: none;
}

.btn--primary {
  background: var(--accent);
  color: var(--white);
}
.btn--primary:hover { background: #7c75ff; transform: translateY(-1px); }

.btn--ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}
.btn--ghost:hover { border-color: rgba(255,255,255,.25); color: var(--white); }

.btn--sm { padding: 9px 20px; font-size: .85rem; }
.btn--full { width: 100%; justify-content: center; }

/* ─── NAV ─── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  transition: background var(--transition), backdrop-filter var(--transition), border-color var(--transition);
  border-bottom: 1px solid transparent;
}

.nav.scrolled {
  background: rgba(11,11,15,.85);
  backdrop-filter: blur(16px);
  border-color: var(--border);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.nav__logo {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--white);
  text-decoration: none;
  letter-spacing: 0.02em;
}
.nav__logo span { color: var(--accent-2); }

.nav__links {
  display: none;
  gap: 36px;
  align-items: center;
}
@media(min-width:768px){ .nav__links{ display:flex; } }

.nav__links a {
  font-size: .9rem;
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--transition);
}
.nav__links a:hover { color: var(--white); }

.nav__cta {
  padding: 9px 20px;
  border-radius: 8px;
  background: var(--accent) !important;
  color: var(--white) !important;
  font-weight: 500;
}
.nav__cta:hover { background: #7c75ff !important; }

.nav__lang {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: .8rem;
  font-weight: 500;
  letter-spacing: .05em;
  padding: 0 4px;
}
.nav__lang-active { color: var(--white); }
.nav__lang-sep { color: var(--text-muted); opacity: .5; }
.nav__lang a { color: var(--text-muted); padding: 0 !important; }
.nav__lang a:hover { color: var(--white); }

.nav__mobile-lang {
  margin-top: 8px;
  color: var(--accent-2) !important;
  font-size: .9rem !important;
}

.nav__burger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
@media(min-width:768px){ .nav__burger{ display:none; } }

.nav__burger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}

.nav__mobile {
  display: none;
  flex-direction: column;
  padding: 16px 24px 24px;
  background: rgba(11,11,15,.97);
  border-top: 1px solid var(--border);
}
.nav__mobile.open { display: flex; }
.nav__mobile a {
  padding: 14px 0;
  color: var(--text);
  text-decoration: none;
  font-size: 1rem;
  border-bottom: 1px solid var(--border);
}
.nav__mobile a:last-child { border-bottom: none; }

/* ─── HERO ─── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(108,99,255,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(108,99,255,.06) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, black 30%, transparent 80%);
}

.hero__orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: .35;
}
.hero__orb--1 {
  width: 600px; height: 600px;
  top: -100px; left: -100px;
  background: radial-gradient(circle, #6c63ff, transparent);
}
.hero__orb--2 {
  width: 400px; height: 400px;
  bottom: -50px; right: 5%;
  background: radial-gradient(circle, #a78bfa, transparent);
  opacity: .2;
}

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

.hero__tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: .78rem;
  font-weight: 500;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--accent-2);
  background: rgba(108,99,255,.1);
  border: 1px solid rgba(108,99,255,.25);
  padding: 6px 14px;
  border-radius: 100px;
  margin-bottom: 32px;
}

.hero__title {
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 6.5vw, 5rem);
  font-weight: 800;
  color: var(--white);
  line-height: 1.05;
  letter-spacing: -0.035em;
  margin-bottom: 24px;
}

.hero__accent {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__sub {
  font-size: 1.1rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 44px;
  max-width: 560px;
}

.hero__actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.hero__scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: .72rem;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.hero__scroll-line {
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, var(--text-muted), transparent);
  animation: scrollLine 1.8s ease-in-out infinite;
}

@keyframes scrollLine {
  0%   { opacity: 1; transform: scaleY(1) translateY(0); }
  100% { opacity: 0; transform: scaleY(0.3) translateY(20px); }
}

/* ─── STATS ─── */
.stats {
  padding: 60px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--bg-2);
}

.stats__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px;
}
@media(min-width:640px){ .stats__grid{ grid-template-columns: repeat(4,1fr); } }

.stats__item { text-align: center; }

.stats__number {
  font-family: var(--font-display);
  font-size: 2.8rem;
  font-weight: 700;
  color: var(--white);
  line-height: 1;
  letter-spacing: -0.03em;
  margin-bottom: 8px;
}

.stats__label {
  font-size: .8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: .06em;
}

/* ─── ABOUT ─── */
.about__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 60px;
  align-items: center;
}
@media(min-width:900px){ .about__grid{ grid-template-columns: 1fr 1.2fr; } }

.about__visual {
  position: relative;
  height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.about__card {
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px;
  max-width: 320px;
  position: relative;
  z-index: 1;
}

.about__card-icon {
  font-size: 2rem;
  color: var(--accent-2);
  margin-bottom: 16px;
}

.about__card p {
  color: var(--text-muted);
  font-size: .95rem;
  line-height: 1.65;
}

.about__lines {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.about__line {
  position: absolute;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
}
.about__line:nth-child(1) { inset: 0; }
.about__line:nth-child(2) { inset: 16px; opacity: .5; }
.about__line:nth-child(3) { inset: 32px; opacity: .25; }

.about__body {
  color: var(--text-muted);
  margin-bottom: 18px;
  font-size: .97rem;
  line-height: 1.75;
}

.about__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 28px;
}
.about__tags span {
  font-size: .78rem;
  padding: 6px 14px;
  border-radius: 100px;
  background: rgba(108,99,255,.1);
  border: 1px solid rgba(108,99,255,.2);
  color: var(--accent-2);
  font-weight: 500;
}

/* ─── PORTFOLIO ─── */
.portfolio { background: var(--bg-2); }

.portfolio__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}
@media(min-width:640px){ .portfolio__grid{ grid-template-columns: repeat(2,1fr); } }
@media(min-width:1000px){ .portfolio__grid{ grid-template-columns: repeat(3,1fr); } }

.portfolio__card {
  display: block;
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  text-decoration: none;
  color: inherit;
  transition: border-color var(--transition), transform var(--transition), background var(--transition);
}
.portfolio__card:hover {
  border-color: rgba(108,99,255,.4);
  transform: translateY(-4px);
  background: linear-gradient(180deg, rgba(108,99,255,.05), var(--bg-3));
}

.portfolio__card--highlight {
  border-color: rgba(108,99,255,.3);
  background: linear-gradient(135deg, rgba(108,99,255,.07), var(--bg-3));
}

.portfolio__card--cta {
  display: flex;
  align-items: center;
  justify-content: center;
  border-style: dashed;
  border-color: rgba(255,255,255,.12);
  text-align: center;
}

.portfolio__cta-inner { max-width: 220px; }
.portfolio__cta-inner h3 { margin: 12px 0 8px; }
.portfolio__cta-inner p { font-size: .85rem; color: var(--text-muted); margin-bottom: 20px; }

.portfolio__card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.portfolio__logo {
  font-size: 1.6rem;
  color: var(--accent-2);
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(108,99,255,.1);
  border-radius: 12px;
  font-weight: 700;
}

.portfolio__tag {
  font-size: .7rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--text-muted);
  background: var(--bg);
  padding: 4px 10px;
  border-radius: 100px;
  border: 1px solid var(--border);
}

.portfolio__card h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: -0.015em;
  margin-bottom: 10px;
}

.portfolio__card p {
  font-size: .88rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 24px;
}

.portfolio__meta {
  display: flex;
  justify-content: space-between;
  font-size: .75rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
  padding-top: 16px;
}

/* ─── APPROCHE ─── */
.approche__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2px;
}
@media(min-width:640px){ .approche__grid{ grid-template-columns: repeat(2,1fr); } }

.approche__item {
  padding: 44px 36px;
  border: 1px solid var(--border);
  background: var(--bg-2);
  transition: background var(--transition);
}
.approche__item:hover { background: var(--bg-3); }

.approche__icon {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  color: rgba(108,99,255,.3);
  margin-bottom: 16px;
  line-height: 1;
  letter-spacing: -0.04em;
}

.approche__item h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: -0.015em;
  margin-bottom: 12px;
}

.approche__item p {
  font-size: .9rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ─── CONTACT ─── */
.contact { background: var(--bg-2); }

.contact__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 60px;
  align-items: start;
}
@media(min-width:900px){ .contact__grid{ grid-template-columns: 1fr 1.3fr; } }

.contact__text p {
  color: var(--text-muted);
  font-size: .97rem;
  line-height: 1.75;
  margin-bottom: 32px;
}

.contact__infos {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact__info-item {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: .93rem;
  color: var(--text-muted);
}

.contact__info-icon {
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(108,99,255,.1);
  border-radius: 8px;
  color: var(--accent-2);
  font-size: 1rem;
  flex-shrink: 0;
}

/* Form */
.contact__form {
  display: flex;
  flex-direction: column;
  gap: 18px;
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px;
}

.form__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}
@media(min-width:500px){ .form__row{ grid-template-columns: 1fr 1fr; } }

.form__group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form__group label {
  font-size: .8rem;
  font-weight: 500;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: .06em;
}

.form__group input,
.form__group select,
.form__group textarea {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 16px;
  font-size: .93rem;
  color: var(--text);
  font-family: var(--font-sans);
  transition: border-color var(--transition);
  outline: none;
  resize: vertical;
}

.form__group input::placeholder,
.form__group textarea::placeholder { color: rgba(122,122,149,.5); }

.form__group input:focus,
.form__group select:focus,
.form__group textarea:focus {
  border-color: rgba(108,99,255,.5);
}

.form__group select { cursor: pointer; }
.form__group select option { background: var(--bg-3); }

.form__success {
  display: none;
  text-align: center;
  padding: 14px;
  background: rgba(108,99,255,.1);
  border: 1px solid rgba(108,99,255,.25);
  border-radius: 8px;
  color: var(--accent-2);
  font-size: .9rem;
}

/* ─── FOOTER ─── */
.footer {
  padding: 48px 0 32px;
  border-top: 1px solid var(--border);
  background: var(--bg);
}

.footer__inner {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-bottom: 40px;
}
@media(min-width:640px){
  .footer__inner { flex-direction: row; justify-content: space-between; align-items: flex-start; }
}

.footer__brand p {
  font-size: .85rem;
  color: var(--text-muted);
  margin-top: 10px;
  font-style: italic;
}

.footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
}
.footer__links a {
  font-size: .88rem;
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--transition);
}
.footer__links a:hover { color: var(--white); }

.footer__bottom {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  font-size: .78rem;
  color: rgba(122,122,149,.5);
}
@media(min-width:640px){
  .footer__bottom { flex-direction: row; justify-content: space-between; }
}

/* ─── Scroll reveal ─── */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .6s ease, transform .6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}