* {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
      font-family: Arial, sans-serif;
    }

    /* body { background: #f4f6f8; } */

    /* ===== NAVBAR ===== */
    header {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 60px;
      background: #0f172a;
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: flex-start;   /* hamburger left */
      gap: 15px;
      padding: 0 20px;
      z-index: 1000;
    }

    .brand {
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .brand img {
      width: 40px;
      height: 40px;
      border-radius: 50%;
    }

    .brand h1 {
      font-size: 18px;
      font-weight: 600;
    }

    /* Desktop menu */
    .nav-links {
      display: flex;
      gap: 25px;
      margin-left: auto; /* push menu to right */
    }

    .nav-links a {
      position: relative;
      text-decoration: none;
      color: #cbd5e1;
      font-size: 15px;
      padding: 5px 0;
      transition: color 0.3s;
    }

    .nav-links a::after {
      content: "";
      position: absolute;
      left: 0;
      bottom: -5px;
      width: 0;
      height: 2px;
      background: #38bdf8;
      transition: width 0.3s;
    }

    .nav-links a:hover {
      color: #fff;
    }

    .nav-links a:hover::after{
      width: 100%;
    }

    /* Hamburger */
    .hamburger {
      display: none;
      flex-direction: column;
      gap: 5px;
      cursor: pointer;
    }

    .hamburger span {
      width: 25px;
      height: 3px;
      background: #fff;
      border-radius: 2px;
    }

    /* ===== MOBILE MENU ===== */
    .mobile-menu {
      position: fixed;
      top: 0;
      left: -260px;
      width: 250px;
      height: 100vh;
      background: #020617;
      padding: 20px;
      transition: left 0.4s ease;
      z-index: 1100;
    }

    .mobile-menu.open {
      left: 0;
    }

    .mobile-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 30px;
    }

    .close-btn {
      font-size: 24px;
      cursor: pointer;
      color: #fff;
    }

    .mobile-links {
      display: flex;
      flex-direction: column;
      gap: 20px;
    }

    .mobile-links a {
      text-decoration: none;
      color: #cbd5e1;
      font-size: 16px;
      position: relative;
      padding-left: 8px;
    }

    .mobile-links a::before {
      content: "";
      position: absolute;
      left: 0;
      top: 0;
      width: 3px;
      height: 0;
      background: #38bdf8;
      transition: height 0.3s;
    }

    .mobile-links a.active,
    .mobile-links a:hover {
      color: #fff;
    }

    .mobile-links a.active::before,
    .mobile-links a:hover::before {
      height: 100%;
    }

    /* Overlay */
    .overlay {
      position: fixed;
      inset: 0;
      background: rgba(0,0,0,0.4);
      opacity: 0;
      visibility: hidden;
      transition: 0.3s;
      z-index: 1050;
    }

    .overlay.show {
      opacity: 1;
      visibility: visible;
    }
    /* ===== ICONS ===== */
    .nav-links i,
  .mobile-links i {
    margin-right: 8px;
    color: #38bdf8;
    align-items: center;
}


    /* Responsive */
    @media (max-width: 768px) {
      .nav-links { display: none; }
      .hamburger { display: flex; }
    }

    main {
      padding: 100px 20px;
    }