body {
      margin: 0;
      font-family: "Poppins", sans-serif;
      background: #f4f4f4;
      color: #333;
      overflow-x: hidden;
      transition: all 0.3s ease-in-out;
    }

    header {
      background: linear-gradient(135deg, #fbc735, #f1a400);
      color: #222;
      text-align: center;
      padding: 70px 20px;
      box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    }

    header h1 {
      margin: 0;
      font-size: 2.5rem;
      font-weight: 700;
      letter-spacing: 1px;
    }

    header p {
      margin-top: 12px;
      font-size: 1.1rem;
      color: #222;
    }

    section {
      max-width: 1200px;
      margin: 60px auto;
      padding: 0 20px;
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
      gap: 30px;
      transition: all 0.4s ease;
    }

    .obra {
      background: #fff;
      border-radius: 12px;
      box-shadow: 0 5px 14px rgba(0, 0, 0, 0.1);
      overflow: hidden;
      transition: transform 0.4s ease, box-shadow 0.4s ease;
      cursor: pointer;
    }

    .obra:hover {
      transform: translateY(-8px);
      box-shadow: 0 8px 18px rgba(0, 0, 0, 0.2);
    }

    .obra img {
      width: 100%;
      height: 220px;
      object-fit: cover;
      transition: transform 0.4s ease;
    }

    .obra:hover img {
      transform: scale(1.08);
    }

    .obra-content {
      padding: 25px;
    }

    .obra-content h2 {
      color: #fbc735;
      font-size: 1.3rem;
      margin-bottom: 10px;
      border-left: 5px solid #fbc735;
      padding-left: 10px;
    }

    .obra-content p {
      line-height: 1.6;
      font-size: 0.95rem;
      margin-bottom: 8px;
      color: #444;
    }

    .obra-content strong {
      color: #000;
    }

    /* 🌙 Modo oscuro */
    body.dark-mode {
      background: #1b1b1b;
      color: #eaeaea;
    }

    body.dark-mode header {
      background: linear-gradient(135deg, #2c2c2c, #1f1f1f);
      color: #fbc735;
      box-shadow: 0 4px 8px rgba(0, 0, 0, 0.7);
    }

    body.dark-mode header h1 {
      color: #fbc735;
    }

    body.dark-mode header p {
      color: #ccc;
    }

    body.dark-mode .obra {
      background: #2a2a2a;
      box-shadow: 0 5px 16px rgba(0, 0, 0, 0.6);
      border: 1px solid rgba(255, 255, 255, 0.05);
    }

    body.dark-mode .obra:hover {
      transform: translateY(-8px);
      box-shadow: 0 8px 22px rgba(251, 199, 53, 0.25);
    }

    body.dark-mode .obra img {
      opacity: 0.9;
      filter: brightness(0.85) contrast(1.05);
    }

    body.dark-mode .obra-content {
      color: #ddd;
    }

    body.dark-mode .obra-content h2 {
      color: #fbc735;
      border-left: 5px solid #fbc735;
    }

    body.dark-mode .obra-content p {
      color: #ccc;
    }

    body.dark-mode .obra-content strong {
      color: #fff;
    }

    /* ===== Modal ===== */
    .overlay {
      position: fixed;
      inset: 0;
      background: rgba(0, 0, 0, 0.7);
      opacity: 0;
      pointer-events: none;
      transition: opacity 0.4s ease;
      z-index: 10;
    }

    .overlay.active {
      opacity: 1;
      pointer-events: all;
    }

    .modal-obra {
      position: fixed;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%) scale(0.9);
      background: #fff;
      border-radius: 14px;
      box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
      width: 90%;
      max-width: 1000px;
      opacity: 0;
      pointer-events: none;
      transition: all 0.4s ease;
      z-index: 11;
      overflow-y: auto;
      max-height: 90vh;
    }

    .modal-obra.active {
      opacity: 1;
      transform: translate(-50%, -50%) scale(1);
      pointer-events: all;
    }

    .modal-obra img.main {
      width: 100%;
      height: 400px;
      object-fit: cover;
      border-top-left-radius: 14px;
      border-top-right-radius: 14px;
    }

    .modal-content {
      padding: 25px;
      text-align: left;
    }

    .modal-content h2 {
      color: #fbc735;
      font-size: 1.4rem;
      border-left: 5px solid #fbc735;
      padding-left: 10px;
      margin-bottom: 15px;
    }

    .modal-content p {
      color: #444;
      font-size: 0.95rem;
      line-height: 1.6;
    }

    .galeria {
      display: flex;
      justify-content: center;
      gap: 15px;
      flex-wrap: wrap;
      margin-top: 20px;
    }

    .galeria img {
      width: 260px;
      height: 170px;
      object-fit: cover;
      border-radius: 8px;
      transition: transform 0.3s ease;
    }

    .galeria img:hover {
      transform: scale(1.05);
    }

    .btn-volver {
      display: block;
      margin: 25px auto 10px;
      background: #fbc735;
      border: none;
      padding: 10px 20px;
      border-radius: 8px;
      font-weight: 600;
      cursor: pointer;
      transition: background 0.3s ease;
    }

    .btn-volver:hover {
      background: #f1a400;
    }

    body.dark-mode .modal-obra {
      background: #2a2a2a;
    }

    body.dark-mode .modal-content p {
      color: #ccc;
    }

    body.dark-mode .galeria img {
      opacity: 0.9;
      filter: brightness(0.85);
    }