/* Ceazers 3D - nav.css | Navigation, mobile menu, scroll progress, bg grid */


    /* ============================================================
       NAVIGATION
    ============================================================ */
    /* ── Scroll progress bar ── */
    .scroll-progress {
      position: fixed;
      top: 0; left: 0;
      width: 0%;
      height: 3px;
      background: linear-gradient(90deg, #0EA5E9, #6366F1, #8B5CF6);
      z-index: 1002;
      transition: none;
      border-radius: 0 2px 2px 0;
      box-shadow: 0 0 10px rgba(14,165,233,0.5);
    }

    #navbar {
      position: fixed;
      top: 0; left: 0; right: 0;
      z-index: 1000;
      padding: 0 24px;
      background: transparent;
      border-bottom: 1px solid transparent;
      transition: background 0.4s ease, box-shadow 0.4s ease, padding 0.4s ease, border-color 0.4s ease, backdrop-filter 0.4s ease;
    }
    #navbar.scrolled {
      background: rgba(8,12,20,0.72);
      backdrop-filter: blur(20px) saturate(1.6);
      -webkit-backdrop-filter: blur(20px) saturate(1.6);
      box-shadow: 0 4px 30px rgba(0,0,0,0.25), 0 1px 0 rgba(255,255,255,0.05);
      border-bottom-color: rgba(255,255,255,0.06);
      padding: 0 24px;
    }

    .nav-inner {
      max-width: 1180px;
      margin: 0 auto;
      height: 72px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      transition: height 0.4s ease;
    }
    #navbar.scrolled .nav-inner {
      height: 60px;
    }

    .nav-logo {
      display: flex;
      align-items: center;
      flex-shrink: 0;
    }
    .nav-logo-img {
      height: 44px;
      width: 44px;
      border-radius: 50%;
      object-fit: contain;
      background: rgba(255,255,255,0.12);
      padding: 6px;
      transition: height 0.4s ease, width 0.4s ease;
      filter: invert(1);
    }
    #navbar.scrolled .nav-logo-img {
      height: 38px;
      width: 38px;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 20px;
    }
    .nav-links a {
      font-size: 0.82rem;
      font-weight: 500;
      color: rgba(255,255,255,0.72);
      transition: color var(--transition);
      position: relative;
      white-space: nowrap;
    }
    .nav-links a::after {
      content: '';
      position: absolute;
      bottom: -4px; left: 0;
      width: 0; height: 2px;
      background: var(--color-accent);
      border-radius: 2px;
      transition: width var(--transition);
    }
    .nav-links a:hover,
    .nav-links a.active { color: #fff; }
    .nav-links a:hover::after,
    .nav-links a.active::after { width: 100%; }

    .nav-cta { padding: 10px 20px; font-size: 0.875rem; }

    .hamburger {
      display: none;
      flex-direction: column;
      gap: 5px;
      cursor: pointer;
      padding: 6px;
      border: none;
      background: transparent;
    }
    .hamburger span {
      display: block;
      width: 24px; height: 2px;
      background: #fff;
      border-radius: 2px;
      transition: all var(--transition);
    }
    .hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
    .hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
    .hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

    /* Mobile menu */
    .mobile-menu {
      display: none;
      position: fixed;
      top: 72px; left: 0; right: 0;
      background: rgba(8,12,20,0.98);
      backdrop-filter: blur(14px);
      padding: 20px 24px 28px;
      z-index: 999;
      border-bottom: 1px solid var(--color-border-dark);
    }
    .mobile-menu.open { display: block; }
    .mobile-menu a {
      display: block;
      padding: 14px 0;
      font-size: 1rem;
      font-weight: 500;
      color: rgba(255,255,255,0.82);
      border-bottom: 1px solid rgba(255,255,255,0.06);
      transition: color var(--transition);
    }
    .mobile-menu a:last-of-type { border-bottom: none; }
    .mobile-menu a:hover { color: var(--color-accent); }
    .mobile-menu .btn { margin-top: 20px; width: 100%; justify-content: center; }


    /* ============================================================
       BACKGROUND HELPERS (reused across dark sections)
    ============================================================ */
    .bg-grid {
      position: absolute;
      inset: 0;
      background-image:
        linear-gradient(rgba(14,165,233,0.055) 1px, transparent 1px),
        linear-gradient(90deg, rgba(14,165,233,0.055) 1px, transparent 1px);
      background-size: 48px 48px;
      pointer-events: none;
    }


    /* ============================================================
       NAVIGATION, logo
    ============================================================ */


    /* ============================================================
       SCROLL PROGRESS BAR
    ============================================================ */
    .scroll-progress {
      position: fixed;
      top: 0; left: 0;
      height: 2px;
      width: 100%;
      background: linear-gradient(90deg, var(--color-accent) 0%, #6366f1 50%, var(--color-cta) 100%);
      transform-origin: left center;
      transform: scaleX(0);
      z-index: 10000;
      pointer-events: none;
    }