/* Header sticky */
.site-header{
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  background: rgba(243, 239, 231, 0.92);
  backdrop-filter: saturate(1.1) blur(10px);
  -webkit-backdrop-filter: saturate(1.1) blur(10px);
  border-bottom: 1px solid transparent;
  transition: background var(--t-fast), border-color var(--t-fast), box-shadow var(--t-fast);
}
.site-header.is-scrolled{
  border-color: var(--border);
  background: rgba(243, 239, 231, 0.97);
  box-shadow: 0 6px 24px -16px rgba(0,0,0,0.18);
}
.site-header__inner{
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h-mobile);
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px;
}
@media (min-width: 768px){
  .site-header__inner { height: var(--header-h); padding: 0 32px; }
}

.brand{
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
  text-decoration: none;
  min-width: 0;
  max-width: calc(100% - 60px);
}
.brand-mark{
  width: 38px;
  height: 38px;
  color: var(--accent);
  display: grid;
  place-items: center;
  flex-shrink: 0;
}
.brand-mark svg{ width: 100%; height: 100%; display: block; }
.brand-name{
  font-family: var(--ff-display);
  font-weight: 600;
  font-size: 1.18rem;
  line-height: 1.05;
  letter-spacing: 0.005em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  min-width: 0;
}
.brand-name em{
  font-style: italic;
  color: var(--accent);
  font-weight: 500;
}

/* Nav desktop */
.nav-desktop{ display: none; }
@media (min-width: 980px){
  .nav-desktop{
    display: flex;
    align-items: center;
    gap: 32px;
  }
  .nav-desktop a{
    font-family: var(--ff-body);
    font-size: 0.95rem;
    color: var(--text);
    position: relative;
    padding: 6px 0;
    transition: color var(--t-fast);
  }
  .nav-desktop a::after{
    content: "";
    position: absolute;
    left: 0; right: 0; bottom: 0;
    height: 1px;
    background: var(--accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--t-base);
  }
  .nav-desktop a:hover{ color: var(--accent); }
  .nav-desktop a:hover::after{ transform: scaleX(1); }
}

.header-cta{
  display: none;
}
@media (min-width: 980px){
  .header-cta{
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    background: var(--accent);
    color: #fff;
    border-radius: 999px;
    font-family: var(--ff-body);
    font-weight: 500;
    font-size: 0.9rem;
    transition: background var(--t-fast), transform var(--t-fast);
  }
  .header-cta:hover{ background: var(--accent-deep); transform: translateY(-1px); }
  .header-cta svg{ width: 16px; height: 16px; }
}

/* Burger */
.burger{
  position: fixed;
  top: calc((var(--header-h-mobile) - 44px) / 2);
  right: 16px;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  z-index: var(--z-burger);
  background: transparent;
  border: 0;
  cursor: pointer;
}
.burger span{
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  position: relative;
  transition: background var(--t-fast);
}
.burger span::before,
.burger span::after{
  content: "";
  position: absolute;
  left: 0;
  width: 22px;
  height: 2px;
  background: var(--text);
  transition: transform var(--t-base), top var(--t-base);
}
.burger span::before{ top: -7px; }
.burger span::after{ top: 7px; }
.burger.is-open span{ background: transparent; }
.burger.is-open span::before{ top: 0; transform: rotate(45deg); }
.burger.is-open span::after{ top: 0; transform: rotate(-45deg); }
@media (min-width: 980px){
  .burger{ display: none; }
}

/* Menu mobile */
.menu-mobile{
  position: fixed;
  top: 0; left: 0;
  width: 100%;
  height: 100dvh;
  background: var(--bg);
  z-index: var(--z-menu);
  padding: calc(var(--header-h-mobile) + 32px) 24px 40px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  transform: translateY(-100%);
  opacity: 0;
  visibility: hidden;
  transition: transform .35s ease, opacity .35s ease, visibility 0s linear .35s;
}
.menu-mobile.is-open{
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
  transition: transform .35s ease, opacity .35s ease;
}
.menu-mobile a{
  font-family: var(--ff-display);
  font-size: 1.8rem;
  color: var(--text);
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
  line-height: 1.1;
}
.menu-mobile a.btn{
  font-family: var(--ff-body);
  font-size: 1rem;
  border-bottom: 0;
  margin-top: 16px;
}
.menu-mobile a.btn-primary,
.menu-mobile a.btn-wa{ color: #fff; }
.menu-mobile a.btn-primary svg,
.menu-mobile a.btn-wa svg{ color: #fff; }
@media (min-width: 980px){
  .menu-mobile{ display: none; }
}

/* Footer */
.site-footer{
  background: var(--surface-dark);
  color: var(--text-on-dark);
  padding: clamp(40px, 5vw, 64px) 0 24px;
  margin-top: 0;
}
.site-footer .container{ display: grid; gap: 36px; }
.footer-brand{
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--text-on-dark);
}
.footer-brand .brand-mark{ color: var(--accent-2); }
.footer-brand .brand-name{ color: var(--text-on-dark); }
.footer-brand .brand-name em{ color: var(--accent-2); }
.footer-cols{
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}
@media (min-width: 720px){
  .footer-cols{ grid-template-columns: 1.2fr 1fr 1fr; gap: 40px; }
}
.footer-col h4{
  font-family: var(--ff-display);
  font-size: 1.4rem;
  color: var(--text-on-dark);
  margin-bottom: 14px;
  font-weight: 500;
}
.footer-col p,
.footer-col li,
.footer-col a{
  color: var(--text-on-dark-2);
  font-size: 0.95rem;
  line-height: 1.7;
}
.footer-col a:hover{ color: var(--accent-2); }
.footer-col ul{ display: grid; gap: 6px; }
.footer-row{
  border-top: 1px solid rgba(243, 239, 231, 0.14);
  padding-top: 18px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  font-size: 0.82rem;
  color: var(--text-on-dark-2);
}
.footer-row a{ color: var(--text-on-dark-2); text-decoration: underline; text-decoration-color: rgba(243,239,231,0.3); text-underline-offset: 3px; }
.footer-row a:hover{ color: var(--accent-2); }

/* FAB */
.fab{
  position: fixed;
  bottom: 18px;
  right: 18px;
  z-index: var(--z-fab);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 18px;
  background: var(--wa-green);
  color: #fff;
  border-radius: 999px;
  font-family: var(--ff-body);
  font-weight: 600;
  font-size: 0.95rem;
  box-shadow: 0 10px 28px -8px rgba(18, 140, 126, 0.55);
  transition: transform var(--t-fast), box-shadow var(--t-fast);
}
.fab svg{ width: 18px; height: 18px; }
.fab:hover{ transform: translateY(-2px); box-shadow: 0 14px 32px -8px rgba(18, 140, 126, 0.65); }
@media (min-width: 980px){ .fab{ display: none; } }