/* ========= Layout ========= */
.site-nav{
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--nav-bg);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--nav-stroke);
}
.site-nav .nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  padding: 14px 0;
}
.site-nav .profile{
  display:flex;
  align-items:center;
  gap: 10px;
  min-width: 210px;
}
.site-nav .profile img{
  width: 40px;
  height: 40px;
  border-radius: 14px;
  object-fit: cover;
  border:1px solid var(--stroke);
}
.site-nav .brand{
  font-weight: 900;
  letter-spacing: -.02em;
}
.nav-links{
  list-style:none;
  padding:0;
  margin:0;
  display:flex;
  gap: 10px;
  align-items:center;
  flex-wrap:wrap;
  justify-content:center;
}
.nav-links a{
  display:inline-flex;
  padding: 10px 12px;
  border-radius: 12px;
  font-weight:800;
  font-size: 14px;
  color: var(--muted);
  text-decoration:none;
}
.nav-links a:hover{
  background: rgba(255,255,255,.08);
  color: var(--text);
  text-decoration:none;
}
html[data-theme="light"] .nav-links a:hover{
  background: rgba(16,24,40,.06);
}
.nav-actions{
  display:flex;
  align-items:center;
  gap: 10px;
  min-width: 210px;
  justify-content:flex-end;
}

.theme-toggle{
  width: 42px;
  height: 42px;
  border-radius: 14px;
  border:1px solid var(--stroke);
  background: var(--surface2);
  color: var(--text);
  box-shadow: var(--shadow-sm);
  cursor:pointer;
  display:grid;
  place-items:center;
}
.theme-toggle:hover{ transform: translateY(-1px); }
.theme-toggle:active{ transform: translateY(0) scale(.99); }

.hero{
  padding: 52px 0 18px;
}
.hero h1{
  margin: 0 0 10px;
  font-size: clamp(34px, 5vw, 62px);
  letter-spacing: -.04em;
  line-height: 1.02;
}
.hero p{
  margin: 0 0 18px;
  color: var(--muted);
  line-height: 1.55;
  font-size: 16px;
  max-width: 75ch;
}
.hero .hero-actions{
  display:flex;
  gap: 12px;
  flex-wrap:wrap;
  margin-top: 10px;
}

/* Sections */
.section{
  padding: 28px 0;
}
.section h2{
  margin: 0 0 14px;
  font-size: 26px;
  letter-spacing: -.03em;
}
.section .section-sub{
  margin: 0 0 18px;
  color: var(--muted);
  max-width: 80ch;
  line-height: 1.55;
}

/* Footer */
footer{
  margin-top: 26px;
  background: rgba(0,0,0,.88);
  color: rgba(255,255,255,.72);
}
html[data-theme="light"] footer{
  background: rgba(16,24,40,.92);
}
.footer-inner{
  padding: 26px 0 18px;
  display:grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
@media (max-width: 980px){
  .footer-inner{ grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 620px){
  .footer-inner{ grid-template-columns: 1fr; }
  .site-nav .profile, .nav-actions{ min-width: auto; }
}
footer h3{
  margin: 0 0 12px;
  color: rgba(255,255,255,.92);
  font-size: 14px;
  letter-spacing: .04em;
  text-transform: uppercase;
}
footer a{ color: rgba(255,255,255,.72); text-decoration:none; }
footer a:hover{ color: rgba(255,255,255,.95); text-decoration:none; }
.footer-bottom{
  border-top: 1px solid rgba(255,255,255,.10);
  padding: 14px 0;
  text-align:center;
  color: rgba(255,255,255,.55);
  font-size: 13px;
}


/* Mobile menu */
.menu-toggle{
  display:none;
  width: 42px;
  height: 42px;
  border-radius: 14px;
  border:1px solid var(--stroke);
  background: var(--surface2);
  color: var(--text);
  box-shadow: var(--shadow-sm);
  cursor:pointer;
}
.nav-overlay{
  display:none;
}
@media (max-width: 860px){
  .nav-links{
    position: fixed;
    top: 74px;
    right: 18px;
    left: 18px;
    display:none;
    flex-direction: column;
    gap: 8px;
    padding: 14px;
    background: var(--nav-bg);
    border: 1px solid var(--nav-stroke);
    border-radius: 18px;
    backdrop-filter: blur(14px);
    box-shadow: var(--shadow);
  }
  .nav-links.open{ display:flex; }
  .menu-toggle{ display:inline-grid; place-items:center; }
  .nav-actions{ min-width:auto; }
  .nav-overlay{
    display:none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.35);
    z-index: 40;
  }
  .nav-overlay.open{ display:block; }
}


/* Footer columns compatibility with existing markup */
.colonne{
  display:flex;
  flex-direction:column;
  gap: 10px;
}