/* ==========================================================================
   5. Header & Navigation (Fixed glassmorphism)
   ========================================================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  padding: 30px 10%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  z-index: 999;
  transition: padding 0.5s ease, background-color 0.5s ease, border-color 0.5s ease;
  border-bottom: 1px solid transparent;
}

.header.scrolled {
  padding: 18px 5%;
  background-color: rgba(7, 7, 8, 0.88);
  backdrop-filter: blur(25px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.logo img {
  height: 54px;
  width: auto;
  transition: var(--transition-smooth);
  transform: translateZ(0);
  filter: brightness(1.5) contrast(1.05);
}

.header.scrolled .logo img {
  height: 40px;
}

/* Header branding group on the left */
.header-branding {
  display: flex;
  align-items: center;
  gap: 18px;
  height: 54px;
}

.logo {
  display: flex;
  align-items: center;
  height: 100%;
}

.header-separator {
  width: 1px;
  height: 38px;
  background-color: rgba(255, 255, 255, 0.15);
  transition: var(--transition-smooth);
}

.header.scrolled .header-separator {
  height: 28px;
}

.header-brand-info {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100%;
  transition: var(--transition-smooth);
}

.brand-name {
  font-family: 'Playfair Display', serif;
  font-size: 26px;
  font-weight: 700;
  letter-spacing: 1.2px;
  color: #2f7a85; /* Refined architectural slate teal */
  text-transform: uppercase;
  line-height: 1;
  text-align: center;
  margin-top: -3px; /* Optical vertical lift for exact center alignment */
  transition: var(--transition-smooth);
}

.brand-tagline {
  font-family: var(--font-body); /* Inter */
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.5px;
  color: #2f7a85;
  line-height: 1.1;
  text-transform: lowercase;
  text-align: center;
  margin-top: 1px;
  transition: var(--transition-smooth);
}

.brand-services {
  font-family: var(--font-body); /* Inter */
  font-size: 8px;
  font-weight: 500;
  letter-spacing: 0.5px;
  color: #2f7a85;
  line-height: 1.1;
  text-align: center;
  margin-top: 2px;
  transition: var(--transition-smooth);
}

/* Scrolled states for compact header */
.header.scrolled .brand-name {
  font-size: 21px;
}

.header.scrolled .brand-tagline {
  font-size: 8.5px;
}

.header.scrolled .brand-services {
  font-size: 7.5px;
}

/* Responsive adjustment to scale down header branding on mobile/tablet */
@media (max-width: 991px) {
  .header-branding {
    gap: 12px;
    height: 40px;
  }
  .logo img {
    height: 40px;
  }
  .header.scrolled .logo img {
    height: 32px;
  }
  .header-separator {
    height: 28px;
  }
  .header.scrolled .header-separator {
    height: 22px;
  }
  .brand-name {
    font-size: 20px;
    font-weight: 700;
    letter-spacing: 1px;
    color: #2f7a85;
    margin-top: -2px;
  }
  .header.scrolled .brand-name {
    font-size: 17px;
  }
  .brand-tagline {
    font-size: 8px;
    font-weight: 500;
    letter-spacing: 0.3px;
    color: #2f7a85;
    margin-top: 0;
  }
  .header.scrolled .brand-tagline {
    font-size: 7px;
  }
  .brand-services {
    font-size: 7px;
    font-weight: 500;
    letter-spacing: 0.2px;
    color: #2f7a85;
    margin-top: 1px;
  }
  .header.scrolled .brand-services {
    font-size: 6px;
  }
}

@media (max-width: 480px) {
  .header-branding {
    gap: 8px;
  }
  .logo img {
    height: 36px;
  }
  .header.scrolled .logo img {
    height: 28px;
  }
  .header-separator {
    height: 26px;
  }
  .header.scrolled .header-separator {
    height: 20px;
  }
  .brand-name {
    font-size: 11.5px;
    letter-spacing: 0.8px;
    white-space: nowrap;
  }
  .header.scrolled .brand-name {
    font-size: 10px;
  }
  .brand-tagline {
    font-size: 6.5px;
    letter-spacing: 0.2px;
  }
  .brand-services {
    font-size: 5.5px;
    letter-spacing: 0.1px;
  }
}

/* Nav Menu Desktop */
.nav-menu {
  display: flex;
  align-items: center;
  gap: 35px;
}

.nav-link {
  font-family: var(--font-accent);
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--text-secondary);
  position: relative;
  padding: 10px 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1.5px;
  background: var(--gold-gradient);
  transition: var(--transition-medium);
}

.nav-link:hover, .nav-link.active {
  color: var(--text-primary);
}

.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 26px;
  height: 17px;
  background: none;
  border: none;
  z-index: 1002;
}

.hamburger span {
  width: 100%;
  height: 1.5px;
  background-color: var(--text-primary);
  transition: var(--transition-medium);
}

@media (max-width: 991px) {
  .nav-menu {
    display: none;
  }
  .hamburger {
    display: flex;
  }
}

/* Mobile Drawer */
.mobile-drawer {
  position: fixed;
  top: 0;
  bottom: 0;
  right: -100%;
  width: 100%;
  height: 100%;
  height: 100dvh;
  min-height: -webkit-fill-available;
  background-color: var(--bg-secondary);
  z-index: 1001;
  display: flex;
  flex-direction: column;
  justify-content: flex-start; /* Starts content from the top to prevent clipping */
  align-items: center;
  padding: 80px 10% 40px 10%;
  overflow-y: auto; /* Enables scrolling for short mobile screens */
  -webkit-overflow-scrolling: touch;
  transition: right 0.8s cubic-bezier(0.77, 0, 0.175, 1);
}

.mobile-drawer.open {
  right: 0;
}

/* Dedicated Close Button */
.drawer-close {
  position: absolute;
  top: 20px;
  right: 20px;
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 26px;
  cursor: pointer;
  z-index: 1002;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-medium);
}

.drawer-close:hover {
  color: var(--color-gold);
  transform: rotate(90deg);
}

/* Drawer Logo Image */
.mobile-drawer-logo {
  max-width: 220px;
  width: 60%;
  height: auto;
  margin-bottom: 25px;
  flex-shrink: 0;
  display: block;
  filter: drop-shadow(0 4px 15px rgba(0, 0, 0, 0.5));
}

.mobile-drawer-nav {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
  margin-bottom: 45px;
  flex-shrink: 0;
}

.mobile-drawer-link {
  font-family: var(--font-display);
  font-size: 26px; /* Optimized size to fit all screens comfortably */
  color: var(--text-secondary);
  text-transform: uppercase;
  transition: var(--transition-medium);
  letter-spacing: 1px;
}

.mobile-drawer-link:hover, .mobile-drawer-link.active {
  color: var(--color-gold);
  transform: scale(1.05);
}

.mobile-drawer-contact {
  text-align: center;
  font-size: 13px;
  color: var(--text-secondary);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.mobile-drawer-socials {
  display: flex;
  gap: 24px;
  margin-top: 40px;
}

.mobile-drawer-socials a {
  width: 44px;
  height: 44px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  font-size: 15px;
  transition: var(--transition-medium);
}

.mobile-drawer-socials a:hover {
  border-color: var(--color-gold);
  color: var(--color-gold);
  box-shadow: 0 0 10px var(--gold-glow);
}

.hamburger.active span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}