*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 15px; }
body { font-family: var(--font-body); background: var(--c-bg); color: var(--c-ink); line-height: 1.6; overflow-x: hidden; }
img { display: block; max-width: 100%; } a { color: inherit; text-decoration: none; } ul { list-style: none; } button { cursor: pointer; font-family: var(--font-body); }

/* NAV */
.nav { position: fixed; top: 0; left: 0; right: 0; z-index: 900; display: flex; align-items: center; justify-content: space-between; padding: 0 var(--space-xl); height: 68px; transition: background var(--dur-med) var(--ease), box-shadow var(--dur-med) var(--ease), transform var(--dur-med) var(--ease); }
.nav.scrolled { background: rgba(248,249,250,.95); backdrop-filter: blur(14px); box-shadow: var(--shadow-sm); }
.nav.scrolled .nav__links a { color: var(--c-ink); }
.nav.scrolled .nav__logo { color: var(--c-secondary); }
.nav.scrolled .nav__burger span { background: var(--c-ink); }
.nav__logo { display: flex; align-items: center; gap: 10px; font-family: var(--font-head); font-weight: 800; font-size: 1.35rem; color: #fff; }
.nav__logo span { color: var(--c-primary); }
.nav__logo-mark { width: 150px; height: 50px; place-items: center; }
.nav__logo-mark img {max-width: 85%;}
.nav__logo-mark svg { width: 18px; height: 18px; fill: #fff; }
.nav__links { display: flex; gap: var(--space-lg); align-items: center; }
.nav__links a { font-size: .875rem; font-weight: 500; color: #fff; position: relative; transition: color var(--dur-fast); }
.nav__links a::after { content: ''; position: absolute; bottom: -4px; left: 0; right: 0; height: 2px; background: var(--c-primary); transform: scaleX(0); transform-origin: left; transition: transform var(--dur-fast) var(--ease); }
.nav__links a:hover, .nav__links a.active { color: var(--c-primary); }
.nav__links a:hover::after, .nav__links a.active::after { transform: scaleX(1); }
.nav__cta { background: var(--c-primary); color: #fff !important; padding: .45rem 1.1rem; border-radius: var(--r-full); font-weight: 600; font-size: .85rem; transition: background var(--dur-fast), transform var(--dur-fast); }
.nav__cta::after { display: none !important; }
.nav__cta:hover { background: var(--c-primary-dark); transform: translateY(-1px); }
.nav__burger { display: none; flex-direction: column; gap: 5px; background: none; border: none; padding: 6px; }
.nav__burger span { display: block; width: 22px; height: 2px; background: #fff; border-radius: 2px; transition: transform var(--dur-fast), opacity var(--dur-fast); }

/* BUTTONS */
.btn { display: inline-flex; align-items: center; gap: 8px; padding: .65rem 1.5rem; border-radius: var(--r-full); font-family: var(--font-body); font-weight: 600; font-size: .875rem; border: none; transition: all var(--dur-fast) var(--ease); text-decoration: none; cursor: pointer; }
.btn-primary { background: var(--c-primary); color: #fff; }
.btn-primary:hover { background: var(--c-primary-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(231,76,60,.35); }
.btn-secondary { background: transparent; color: var(--c-secondary); border: 2px solid var(--c-secondary); }
.btn-secondary:hover { background: var(--c-secondary); color: #fff; transform: translateY(-2px); }
.btn-outline-white { background: transparent; color: #fff; border: 2px solid rgba(255,255,255,.5); }
.btn-outline-white:hover { background: rgba(255,255,255,.12); border-color: #fff; }
.btn-lg { padding: .85rem 2rem; font-size: .95rem; }

/* SECTION */
.section { padding: var(--space-2xl) var(--space-xl); }
.section-sm { padding: var(--space-xl) var(--space-xl); }
.container { max-width: 1140px; margin: 0 auto; }
.section-label { display: inline-flex; align-items: center; gap: 8px; font-size: .72rem; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; color: var(--c-primary); margin-bottom: .75rem; }
.section-label::before { content: ''; width: 18px; height: 2px; background: var(--c-primary); border-radius: 2px; }
.section-title { font-family: var(--font-head); font-size: clamp(1.5rem,2.8vw,2.25rem); font-weight: 800; line-height: 1.15; color: var(--c-secondary); }
.section-title em { font-style: normal; color: var(--c-primary); }
.section-subtitle { font-size: .95rem; color: var(--c-ink-muted); max-width: 520px; line-height: 1.75; margin-top: .75rem; }

/* CARD */
.card { background: var(--c-surface); border-radius: var(--r-md); box-shadow: var(--shadow-sm); overflow: hidden; transition: transform var(--dur-med) var(--ease), box-shadow var(--dur-med) var(--ease); }
.card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }

/* FOOTER */
.footer { background: var(--c-secondary); color: rgba(255,255,255,.75); padding: var(--space-2xl) var(--space-xl) var(--space-lg); }
.footer__grid { display: grid; grid-template-columns: 1fr 1fr 1fr 1fr; gap: var(--space-xl); max-width: 1140px; margin: 0 auto; }
.footer__logo { width: 200px; }
.footer__logo span { color: var(--c-primary); }
.footer__desc { font-size: .875rem; line-height: 1.75; max-width: 260px; }
.footer__heading { font-family: var(--font-head); font-size: .78rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: rgba(255,255,255,.5); margin-bottom: var(--space-md); }
.footer__links { display: flex; flex-direction: column; gap: 9px; }
.footer__links a { font-size: .875rem; transition: color var(--dur-fast); }
.footer__links a:hover { color: var(--c-primary-light); }
.footer__bottom { border-top: 1px solid rgba(255,255,255,.08); margin-top: var(--space-xl); padding-top: var(--space-md); max-width: 1140px; margin-left: auto; margin-right: auto; display: flex; justify-content: space-between; align-items: center; font-size: .8rem; }
.footer__socials { display: flex; gap: .75rem; }
.footer__socials a { width: 34px; height: 34px; border-radius: 50%; border: 1px solid rgba(255,255,255,.15); display: grid; place-items: center; transition: all var(--dur-fast); }
.footer__socials a:hover { background: var(--c-primary); border-color: var(--c-primary); }
.footer__socials svg { width: 15px; height: 15px; fill: rgba(255,255,255,.65); }

/* AOS */
.aos { opacity: 0; transform: translateY(32px); transition: opacity var(--dur-slow) var(--ease), transform var(--dur-slow) var(--ease); }
.aos.visible { opacity: 1; transform: none; }
.aos-left { opacity: 0; transform: translateX(-32px); transition: opacity var(--dur-slow) var(--ease), transform var(--dur-slow) var(--ease); }
.aos-left.visible { opacity: 1; transform: none; }
.scroll-progress { position: fixed; top: 0; left: 0; height: 3px; background: var(--c-primary); z-index: 1000; transition: width .1s linear; }

/* FLASH */
.flash { padding: .875rem 1.25rem; border-radius: var(--r-md); margin-bottom: .875rem; font-weight: 500; font-size: .875rem; }
.flash-success { background: rgba(231,76,60,.08); color: #c0392b; border: 1px solid rgba(231,76,60,.25); }
.flash-danger, .flash-error { background: rgba(231,76,60,.1); color: #c0392b; border: 1px solid rgba(231,76,60,.3); }
.flash-warning { background: rgba(243,156,18,.1); color: #d68910; border: 1px solid rgba(243,156,18,.3); }

/* RESPONSIVE */
@media (max-width: 1024px) {
  .nav { padding: 0 var(--space-lg); }
  .footer__grid { grid-template-columns: 1fr 1fr; gap: var(--space-lg); }
}
@media (max-width: 768px) {
  .nav__links { display: none; }
  .nav__links.open { display: flex; flex-direction: column; position: fixed; inset: 0; background: var(--c-surface); justify-content: center; align-items: center; gap: var(--space-xl); font-size: 1.25rem; z-index: 800; }
  .nav__links.open a,
  .nav__links.open .nav__lang-btn { color: var(--c-ink); }
  .nav__burger { display: flex; z-index: 901; }
  /* Burger → croix noire quand menu ouvert */
  .nav__burger[aria-expanded="true"] span { background: var(--c-ink); }
  .nav__burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav__burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .nav__burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  /* Nav masquée au scroll vers le bas */
  .nav.nav--hidden { transform: translateY(-100%); }
  /* Footer : tout centré */
  .footer__grid { grid-template-columns: 1fr; text-align: center; }
  .footer__logo { margin: 0 auto; }
  .footer__desc { max-width: 100%; }
  .footer__links { align-items: center; }
  /* Sous-footer : copyright au-dessus des icônes */
  .footer__bottom { flex-direction: column; align-items: center; gap: 1rem; }
  .section { padding: var(--space-xl) var(--space-lg); }
}

/* ---- Language Switcher ---- */
.nav__lang { position: relative; list-style: none; }

.nav__lang-btn {
  display: flex; align-items: center; gap: 6px;
  background: none; border: 1px solid rgba(255,255,255,.25); border-radius: var(--r-full);
  padding: .3rem .75rem; cursor: pointer; font-size: .8rem; font-weight: 600;
  color: var(--c-border); transition: border-color var(--dur-fast), background var(--dur-fast);
  white-space: nowrap;
}
.nav__lang-btn:hover { background: rgba(255,255,255,.1); border-color: rgba(255,255,255,.5); }
.nav.scrolled .nav__lang-btn { color: var(--s); border-color: rgba(0,0,0,.2); }
.nav.scrolled .nav__lang-btn:hover { background: rgba(0,0,0,.05); }

.nav__lang-btn svg { stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; transition: transform var(--dur-fast); flex-shrink: 0; }
.nav__lang-btn[aria-expanded="true"] svg { transform: rotate(180deg); }

.nav__lang-dropdown {
  display: none; position: absolute; top: calc(100% + 8px); right: 0;
  background: #fff; border-radius: var(--r-md); box-shadow: var(--shadow-md);
  border: 1px solid rgba(0,0,0,.07); padding: .4rem; min-width: 140px;
  list-style: none; z-index: 950;
}
.nav__lang-dropdown.open { display: block; }

.nav__lang-dropdown .nav__lang-item {
  display: flex; align-items: center; gap: 8px;
  padding: .5rem .75rem; border-radius: var(--r-sm); font-size: .82rem;
  font-weight: 500; color: var(--c-ink); text-decoration: none;
  transition: background var(--dur-fast);
  white-space: nowrap;
}
.nav__lang-dropdown .nav__lang-item:hover { background: var(--c-bg); color: var(--c-primary); }
.nav__lang-dropdown .nav__lang-item.active { color: var(--c-primary); font-weight: 700; background: rgba(61,184,114,.07); }
.nav__lang-dropdown .nav__lang-item span { font-size: .82rem; }

/* Mobile: lang in open menu */
@media (max-width: 768px) {
  .nav__lang { order: -1; }
  .nav__lang-dropdown { position: static; box-shadow: none; border: 1px solid rgba(0,0,0,.08); margin-top: .5rem; }
}

/* ---- Services grid ---- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 340px));
  gap: 1.5rem;
  justify-content: center;
}
/* Prevent orphan stretching on medium screens */
@media (min-width: 640px) and (max-width: 959px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 639px) {
  .services-grid { grid-template-columns: 1fr; }
}

/* RTL — nav link underline expands from the right */
[dir="rtl"] .nav__links a::after { transform-origin: right; }