/* Header / overlay navigation */
/* NAV BAR */
.site-header {
  position: sticky;
  top: 0;
  z-index: 9999;
  background-color: #1f1f1f;

  transition:
    background 0.35s ease,
    box-shadow 0.35s ease;
}

.header-inner {
  height: 140px;
  display: grid;
  grid-template-columns: 56px 1fr auto;
  align-items: center;
  padding: 0 16px;
  gap: 10px;

  transition:
    height 0.35s ease,
    padding 0.35s ease;
  will-change: height, padding;
}

/* Center logo perfectly */
.header-logo {
  justify-self: center;
  display: inline-flex;
  align-items: center;
}

/* Logo */
.header-logo img {
  max-height: 140px;
  width: auto;
  transition:
    transform 0.35s ease,
    max-height 0.35s ease;
  will-change: transform;
}
.header-btn {
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

.header-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  min-width: 44px;
  padding: 0 12px;
  border-radius: 12px;
  border: 0px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
  cursor: pointer;
  text-decoration: none;
  font: inherit;
  transition:
    transform 0.35s ease,
    background 0.35s ease,
    opacity 0.35s ease;
}

.header-btn i {
  font-size: 18px;
}

/* Mobile: hide text labels, keep icons*/
@media (max-width: 768px) {
  .btn-text {
    display: none;
  }

  .header-inner {
    grid-template-columns: 56px 1fr auto;
  }
}

/* ======================
   SHRINK STATE
   ====================== */

.site-header.is-scrolled {
  background-color: #1f1f1f;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
}

.site-header.is-scrolled .header-inner {
  height: 100px;
  padding: 0 14px;
}

.site-header.is-scrolled .header-logo img {
  max-height: 96px;
  transform: scale(0.95);
}

.site-header.is-scrolled .header-btn {
  transform: scale(0.92);
  opacity: 0.95;
}

/*************************************** menu */

.menu-overlay {
  position: fixed;
  inset: 0;
  z-index: 999999;
  display: grid;
  place-items: center;
  background: rgba(0, 0, 0, 0.72);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);

  opacity: 0;
  pointer-events: none;
  transition: opacity 0.28s ease;
  transform: translateZ(0);
}

.menu-panel {
  width: 100%;
  height: 100%;
  display: grid;
  place-items: center;
  position: relative;
  transform: scale(0.98);
  transition: transform 0.28s ease;
}

.menu-overlay.is-open {
  opacity: 1;
  pointer-events: auto;
}

.menu-overlay.is-open .menu-panel {
  transform: scale(1);
}

.menu-close {
  position: absolute;
  top: 10px;
  right: 10px;
  height: 34px;
  width: 34px;
  border-radius: 14px;
  border: 0px solid rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.menu-close i {
  font-size: 16px;
}

/* Center links */
.menu-nav {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
  padding: 24px;
}

.menu-link {
  color: #fff;
  text-decoration: none;
  font-size: clamp(20px, 3.2vw, 34px);
  letter-spacing: 0.5px;
  padding: 10px 14px;
  border-radius: 14px;
  transition:
    background 0.2s ease,
    transform 0.2s ease,
    opacity 0.2s ease;
}

.menu-link:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-1px);
}

/* Prevent background scroll */
body.menu-open {
  overflow: hidden;
}

.site-header {
  z-index: 1000;
}