/* ============ HEADER ============ */
.header {
  position: fixed; top: 0; z-index: 50;
  width: 100%;
  display: flex;
  flex-direction: column;
  backdrop-filter: blur(18px);
  background: rgba(10,10,15,0.55);
  border-bottom: 1px solid var(--line);
}
.header-top { border-bottom: 1px solid var(--line); }
.header-top-inner {
  max-width: var(--container); margin: 0 auto;
  padding: 8px 32px;
  display: flex; justify-content: space-between; align-items: center;
  font-size: 12px; color: var(--text-soft);
  font-family: var(--font-mono);
}
.info-contact { display: flex; gap: 22px; }
.info-contact a {
  display: inline-flex; align-items: center; gap: 6px;
  transition: color var(--t-fast);
}
.info-contact a:hover { color: var(--violet-300); }

.social-networks { display: flex; gap: 14px; }
.social-networks a {
  width: 26px; height: 26px;
  display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid var(--line); border-radius: 50%;
  transition: all var(--t-fast);
  font-size: 11px;
}
.social-networks a:hover {
  color: white;
  border-color: var(--violet-500);
  background: var(--violet-faint);
  transform: translateY(-2px);
}

.nav {
  max-width: var(--container); margin: 0 auto;
  padding: 18px 32px;
  display: flex; align-items: center; justify-content: space-between;
  gap: 24px;
  width: 100%;
}
.logo {
  font-family: var(--font-display);
  font-weight: 700; font-size: 20px;
  letter-spacing: -0.01em;
  display: inline-flex; align-items: center; gap: 10px;
}
.logo-mark {
  width: 30px; height: 30px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--violet-500), var(--violet-700));
  display: inline-flex; align-items: center; justify-content: center;
  color: white; font-weight: 700; font-size: 14px;
  box-shadow: 0 0 0 1px var(--line-strong), 0 8px 24px var(--violet-glow);
  position: relative; overflow: hidden;
}
.logo-mark::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(120deg, transparent 30%, rgba(255,255,255,0.35) 50%, transparent 70%);
  transform: translateX(-100%);
  animation: sheen 4.5s ease-in-out infinite;
}
@keyframes sheen { 0%,60%{transform:translateX(-100%);} 80%,100%{transform:translateX(100%);} }

/* ---- Desktop nav ---- */
.nav-list {
  list-style: none; display: flex; gap: 6px;
  background: var(--surface); border: 1px solid var(--line);
  border-radius: 999px; padding: 4px;
  gap: 8px;
}
.nav-list a {
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 14px; color: var(--text-soft); font-weight: 500;
  transition: color var(--t-fast);
  display: inline-block;
}
.nav-list a.active {
  color: white;
  background: var(--violet-faint);
  box-shadow: inset 0 0 0 1px var(--line-strong);
}
.nav-list a:hover { color: white; }

/* ---- Hamburger button ---- */
.hamburger {
  display: none;
  flex-direction: column; justify-content: center; align-items: center;
  gap: 5px;
  width: 38px; height: 38px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: var(--surface);
  cursor: pointer;
  transition: border-color var(--t-fast), background var(--t-fast);
  flex-shrink: 0;
}
.hamburger:hover {
  border-color: var(--violet-500);
  background: var(--violet-faint);
}
.hamburger-line {
  display: block;
  width: 18px; height: 2px;
  background: var(--text-soft);
  border-radius: 2px;
  transition: transform var(--t-fast), opacity var(--t-fast), background var(--t-fast);
  transform-origin: center;
}
.hamburger.open .hamburger-line:nth-child(1) { transform: translateY(7px) rotate(45deg); background: white; }
.hamburger.open .hamburger-line:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.open .hamburger-line:nth-child(3) { transform: translateY(-7px) rotate(-45deg); background: white; }

/* ---- Mobile menu ---- */
.mobile-menu {
  display: none;
}
.mobile-nav-list {
  list-style: none;
  display: flex; flex-direction: column; gap: 2px;
  width: 100%;
}
.mobile-nav-link {
  display: block;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 15px; font-weight: 500;
  color: var(--text-soft);
  text-align: center;
  transition: color var(--t-fast), background var(--t-fast);
}
.mobile-nav-link:hover,
.mobile-nav-link.active {
  color: white;
  background: var(--violet-faint);
}
.mobile-cta {
  margin-top: 8px;
  justify-content: center;
  width: 100%;
}

/* ---- Responsive breakpoints ---- */
@media (max-width: 800px) {
  .nav-list  { display: none; }
  .nav-cta   { display: none; }
  .hamburger { display: flex; }
  .info-contact { gap: 14px; }
  .info-contact a span { display: none; }

  .mobile-menu {
    display: flex;
    flex-direction: column; align-items: center; gap: 8px;
    position: absolute;
    top: 100%; left: 0; right: 0;
    padding: 16px 24px 20px;
    background: rgba(10,10,15,1);
    border-bottom: 1px solid var(--line);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateY(-6px);
    transition: opacity var(--t-fast), visibility var(--t-fast), transform var(--t-fast);
    z-index: 49;
  }
  .mobile-menu.open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateY(0);
  }
}
@media (max-width: 560px) {
  .header-top-inner { display: flex; gap: 8px; padding: 10px 20px; }
  .nav { padding: 14px 20px; }
  .mobile-menu { padding: 12px 20px 16px; }
}