/* ─── Reset & Base ─── */
  *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
  html { scroll-behavior: smooth; scroll-padding-top: 80px; }
  body { overflow-x: hidden; }
  img { max-width: 100%; display: block; }
  a { text-decoration: none; }
  button { cursor: pointer; border: none; background: none; font-family: inherit; }
  select { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23757575' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 1rem center; padding-right: 2.5rem; }

  /* ─── Section Shared ─── */
  .section-label {
    font-family: 'Inter', sans-serif;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: #ff6b4a;
    display: flex;
    align-items: center;
    gap: 0.75rem;
  }
  .section-label::before {
    content: '';
    display: block;
    width: 2rem;
    height: 1px;
    background: #ff6b4a;
  }
  .section-title {
    font-family: 'Playfair Display', Georgia, serif;
    font-size: clamp(2rem, 4vw, 3.25rem);
    font-weight: 900;
    line-height: 1.1;
    color: #ffffff;
  }
  .section-desc {
    font-family: 'Inter', sans-serif;
    font-size: 1.05rem;
    line-height: 1.75;
    color: #9e9e9e;
    max-width: 560px;
  }

  /* ─── Scroll Animations ─── */
  .hero-reveal {
    opacity: 0;
    transform: translateY(32px);
    animation: heroReveal 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  }
  .hero-reveal:nth-child(2) { animation-delay: 0.12s; }
  .hero-reveal:nth-child(3) { animation-delay: 0.24s; }
  .hero-reveal:nth-child(4) { animation-delay: 0.36s; }
  .hero-reveal:nth-child(5) { animation-delay: 0.48s; }
  .hero-reveal:nth-child(6) { animation-delay: 0.60s; }

  @keyframes heroReveal {
    to { opacity: 1; transform: translateY(0); }
  }

  .hero-image-container {
    opacity: 0;
    transform: translateX(40px);
    animation: heroImageReveal 1s cubic-bezier(0.16, 1, 0.3, 1) 0.3s forwards;
  }
  @keyframes heroImageReveal {
    to { opacity: 1; transform: translateX(0); }
  }

  /* Scroll-triggered animations */
  .reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  }
  .reveal.visible {
    opacity: 1;
    transform: translateY(0);
  }
  .reveal-delay-1 { transition-delay: 0.1s; }
  .reveal-delay-2 { transition-delay: 0.2s; }
  .reveal-delay-3 { transition-delay: 0.3s; }
  .reveal-delay-4 { transition-delay: 0.4s; }

  /* ─── Scroll dot animation ─── */
  @keyframes scrollDot {
    0% { top: 0; opacity: 1; }
    100% { top: 100%; opacity: 0; }
  }
  .scroll-dot {
    animation: scrollDot 1.5s ease-in-out infinite;
  }

  /* ─── Header ─── */
  #header {
    background: transparent;
    transition: background 0.4s ease, box-shadow 0.4s ease, backdrop-filter 0.4s ease;
  }
  #header.scrolled {
    background: rgba(13, 13, 13, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.05);
  }
  .nav-link { position: relative; }
  .nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: #ff6b4a;
    transition: width 0.3s ease;
  }
  .nav-link:hover::after { width: 100%; }

  /* ─── Mobile Menu ─── */
  .menu-line { display: block; }
  #menuBtn.active .menu-line:nth-child(1) {
    transform: rotate(45deg) translate(3px, 3px);
  }
  #menuBtn.active .menu-line:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
  }
  #menuBtn.active .menu-line:nth-child(3) {
    width: 6px;
    transform: rotate(-45deg) translate(3px, -3px);
  }
  #mobileMenu.open { transform: translateX(0); }

  .mobile-link {
    position: relative;
  }
  .mobile-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 1px;
    background: #ff6b4a;
    transition: width 0.3s ease;
  }
  .mobile-link:hover::after { width: 80%; }

  /* ─── Service Cards ─── */
  .service-card { position: relative; }
  .service-card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 1rem;
    opacity: 0;
    background: linear-gradient(135deg, rgba(255, 107, 74, 0.05) 0%, transparent 60%);
    transition: opacity 0.5s ease;
    pointer-events: none;
  }
  .service-card:hover::before { opacity: 1; }

  /* ─── Area Cards ─── */
  .area-card { cursor: pointer; }
  .area-card::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 0.75rem;
    border: 1px solid transparent;
    transition: border-color 0.4s ease;
    pointer-events: none;
  }
  .area-card:hover::after { border-color: rgba(255, 107, 74, 0.4); }

  /* ─── Process Steps ─── */
  .process-step { position: relative; }

  /* ─── Input Focus States ─── */
  input:focus, textarea:focus, select:focus {
    border-color: rgba(255, 107, 74, 0.6) !important;
    box-shadow: 0 0 0 3px rgba(255, 107, 74, 0.1) !important;
  }

  /* ─── Selection ─── */
  ::selection { background: rgba(255, 107, 74, 0.3); color: #fff; }

  /* ─── Custom scrollbar ─── */
  ::-webkit-scrollbar { width: 8px; }
  ::-webkit-scrollbar-track { background: #1a1a1a; }
  ::-webkit-scrollbar-thumb { background: #3a3a3a; border-radius: 4px; }
  ::-webkit-scrollbar-thumb:hover { background: #ff6b4a; }

  /* ─── Responsive ─── */
  @media (max-width: 767px) {
    .section-label { align-items: flex-start; }
    .section-title { font-size: clamp(1.75rem, 8vw, 2.5rem); }
  }