/* ===== NAVIGATION ===== */
nav {
  position: fixed; top: 0; left: 0; width: 100%;
  background: var(--bg-nav);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  display: flex; justify-content: space-between; align-items: center;
  padding: 12px 5vw; z-index: 9999;
  transition: all 0.4s var(--transition);
}
nav.scrolled { padding: 8px 5vw; box-shadow: var(--shadow-soft); }
nav.scrolled .logo-img { height: 55px; }
nav.scrolled .brand-name-nav { font-size: 1.6rem; }

.logo-container {
  display: flex; align-items: center; gap: 14px; cursor: pointer;
}
.logo-img {
  height: 75px; width: auto;
  transition: all 0.4s var(--transition);
  filter: drop-shadow(0 2px 4px rgba(0,0,0,0.08));
}
.brand-name-nav {
  font-family: 'Times New Roman', Times, serif;
  font-size: 2.2rem; font-weight: 800;
  color: var(--emerald); letter-spacing: 2px;
  text-transform: uppercase;
  transition: all 0.4s ease;
}
.nav-links {
  display: flex; gap: 6px; list-style: none; align-items: center;
}
.nav-links a {
  font-size: 12.5px; font-weight: 500; letter-spacing: 1.2px;
  text-transform: uppercase; cursor: pointer;
  color: var(--text-muted); padding: 10px 16px;
  border-radius: 8px;
  transition: all 0.3s ease;
  position: relative;
}
.nav-links a:hover, .nav-links a.active {
  color: var(--emerald); background: rgba(13,74,43,0.06);
}
.nav-links a::after {
  content: ''; position: absolute;
  bottom: 4px; left: 16px; width: 0; height: 2px;
  background: var(--gold); border-radius: 1px;
  transition: width 0.35s var(--transition);
}
.nav-links a:hover::after, .nav-links a.active::after {
  width: calc(100% - 32px);
}

/* Nav Dropdown */
.nav-dropdown { position: relative; }
.nav-dropdown > a { display: inline-flex; align-items: center; gap: 5px; }
.drop-arrow { font-size: 7px; transition: transform 0.3s ease; }
.nav-dropdown:hover .drop-arrow { transform: rotate(180deg); }
.dropdown-menu {
  position: absolute; top: calc(100% + 4px); left: -10px;
  background: var(--bg-card); min-width: 250px;
  border-radius: var(--radius); border: 1px solid var(--border);
  box-shadow: var(--shadow-elevated);
  opacity: 0; visibility: hidden; transform: translateY(8px);
  transition: all 0.3s var(--transition);
  padding: 10px 0; z-index: 10000;
}
.nav-dropdown:hover .dropdown-menu { opacity:1; visibility:visible; transform:translateY(0); }
.dropdown-menu a {
  display: flex !important; align-items: center; gap: 12px;
  padding: 11px 20px !important; font-size: 12px !important;
  color: var(--text-muted) !important; border-radius: 0 !important;
  transition: all 0.25s ease; white-space: nowrap;
}
.dropdown-menu a img.menu-logo {
  width: 30px; height: 30px; object-fit: contain;
  border-radius: 6px; border: 1px solid var(--border);
}
.dropdown-menu a:hover {
  background: rgba(13,74,43,0.05) !important;
  color: var(--emerald) !important;
  padding-left: 26px !important;
}
.dropdown-menu a::after { display: none !important; }
.dropdown-menu .menu-icon { font-size: 16px; width: 24px; text-align: center; }
.dropdown-divider { height: 1px; background: var(--border); margin: 6px 14px; }

/* Dark mode toggle */
.theme-switch {
  width: 44px; height: 24px; border-radius: 12px;
  background: var(--whisper); border: 1px solid var(--border);
  cursor: pointer; position: relative;
  transition: background 0.3s, border-color 0.3s;
  flex-shrink: 0; display: flex; align-items: center;
}
[data-theme="dark"] .theme-switch { background: #2A3530; border-color: #3A4540; }
.theme-switch-dot {
  width: 18px; height: 18px; border-radius: 50%;
  background: var(--emerald);
  position: absolute; left: 2px; top: 2px;
  transition: transform 0.4s cubic-bezier(0.68,-0.55,0.27,1.55);
  display: flex; align-items: center; justify-content: center;
  font-size: 10px; color: #fff;
}
[data-theme="dark"] .theme-switch-dot {
  transform: translateX(20px); background: var(--emerald-glow);
}

/* Hamburger */
.menu-toggle {
  display: none; width: 38px; height: 38px;
  cursor: pointer; border: none; background: none;
  border-radius: 8px; position: relative;
  transition: background 0.3s;
}
.menu-toggle:hover { background: rgba(13,74,43,0.06); }
.ham-line {
  display: block; width: 22px; height: 2px;
  background: var(--emerald); border-radius: 2px;
  position: absolute; left: 8px;
  transition: all 0.35s cubic-bezier(0.68,-0.55,0.27,1.55);
}
.ham-line:nth-child(1) { top: 10px; }
.ham-line:nth-child(2) { top: 18px; width: 15px; }
.ham-line:nth-child(3) { top: 26px; }
.menu-toggle.active .ham-line:nth-child(1) { top: 18px; transform: rotate(45deg); }
.menu-toggle.active .ham-line:nth-child(2) { opacity: 0; transform: translateX(8px); }
.menu-toggle.active .ham-line:nth-child(3) { top: 18px; transform: rotate(-45deg); }

/* Mobile overlay */
.mobile-overlay {
  display: none; position: fixed; inset: 0;
  background: rgba(0,0,0,0.45); z-index: 9997;
  backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
  opacity: 0; transition: opacity 0.3s ease;
}
.mobile-overlay.active { display: block; opacity: 1; }

/* Scroll to top */
.scroll-top {
  position: fixed; bottom: 32px; right: 32px;
  width: 46px; height: 46px; border-radius: 50%;
  background: var(--emerald); color: #fff;
  border: none; font-size: 18px; cursor: pointer;
  z-index: 9998;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 20px rgba(13,74,43,0.35);
  opacity: 0; visibility: hidden; transform: translateY(16px);
  transition: all 0.4s var(--transition);
}
.scroll-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
.scroll-top:hover { transform: translateY(-4px) scale(1.08); box-shadow: 0 8px 28px rgba(13,74,43,0.4); }