html {
    scroll-behavior: smooth;
}

body {
    font-family: Arial, Helvetica, sans-serif;
}

.nav-link {
    position: relative;
    font-size: 15px;
    font-weight: 500;
    color: #111827;
    transition: 0.3s ease;
}

.nav-link:hover {
    color: #000;
}

.nav-link::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -6px;
    width: 0;
    height: 2px;
    background: #111827;
    transition: 0.3s ease;
}

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

.dropdown-item {
    display: block;
    padding: 14px 16px;
    border-radius: 14px;
    font-size: 15px;
    font-weight: 500;
    transition: 0.25s ease;
}

.dropdown-item:hover {
    background: #f3f4f6;
}

.menu-line {
    width: 24px;
    height: 2px;
    background: #111827;
    border-radius: 999px;
    transition: 0.3s ease;
}

.mobile-menu {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease;
    background: white;
    border-top: 1px solid #e5e7eb;
}

.mobile-menu.active {
    max-height: 700px;
}

.mobile-link {
    padding: 14px 0;
    font-size: 17px;
    font-weight: 600;
    border-bottom: 1px solid #f3f4f6;
}

.mobile-sub-link {
    padding: 10px 0;
    color: #4b5563;
    font-size: 15px;
}

/* Projects filter buttons */
.project-filter-btn {
    background: white;
    color: #1f2937;
    padding: 0.75rem 1rem;
    border-radius: 0.75rem;
    font-weight: 600;
    border: 1px solid #e5e7eb;
    transition: 0.3s ease;
  }

  .project-filter-btn:hover,
  .active-filter {
    background: #dc2626;
    color: white;
    border-color: #dc2626;
  }