/* =============================================================
   mantenimiento-estructural.css  —  prefix .me-
   ============================================================= */

.me-section { padding: 80px 0; }
.me-container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.me-tag { display:inline-block; background:#D5EBF8; color:#02042B; font-size:.75rem; font-weight:700; letter-spacing:.08em; text-transform:uppercase; padding:4px 14px; border-radius:20px; margin-bottom:16px; }
.me-h2 { font-size:2rem; font-weight:800; color:#02042B; margin:0 0 12px; line-height:1.2; }
.me-lead { font-size:1.05rem; color:#444; line-height:1.7; }
.me-reveal { opacity:0; transform:translateY(28px); transition:opacity .6s ease, transform .6s ease; }
.me-reveal.visible { opacity:1; transform:none; }

/* ── Breadcrumb ── */
.me-bc { background:#F4F6F8; padding:12px 0; border-bottom:1px solid #e0e6ed; }
.me-bc__list { list-style:none; margin:0; padding:0; display:flex; align-items:center; gap:8px; font-size:.85rem; }
.me-bc__list li { color:#666; }
.me-bc__list li a { color:#1B6CA8; text-decoration:none; }
.me-bc__list li a:hover { text-decoration:underline; }
.me-bc__list li:not(:last-child)::after { content:'›'; margin-left:8px; color:#999; }

/* ── S1: Intro ── */
.me-intro { padding:80px 0; }
.me-intro__grid { display:grid; grid-template-columns:1fr 1fr; gap:60px; align-items:center; }
.me-intro__kpis { display:grid; grid-template-columns:1fr 1fr; gap:20px; margin-top:32px; }
.me-intro__kpi { background:#F7F9FC; border-radius:12px; padding:20px; border-left:4px solid #1B6CA8; }
.me-intro__kpi-num { font-size:1.8rem; font-weight:800; color:#1B6CA8; }
.me-intro__kpi-lbl { font-size:.85rem; color:#555; margin-top:4px; }
.me-intro__img-wrap { position:relative; }
.me-intro__img { width:100%; height:420px; object-fit:cover; border-radius:16px; }
.me-intro__float { position:absolute; bottom:-20px; left:-20px; background:#02042B; color:#fff; border-radius:12px; padding:18px 22px; min-width:180px; box-shadow:0 8px 24px rgba(0,0,0,.25); }
.me-intro__float-num { font-size:2rem; font-weight:800; color:#D5EBF8; }
.me-intro__float-txt { font-size:.8rem; line-height:1.4; margin-top:4px; }

/* ── S2: Servicios ── */
.me-sv { padding:80px 0; background:#F7F9FC; }
.me-sv__grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(300px,1fr)); gap:24px; margin-top:48px; }
.me-sv__card { background:#fff; border-radius:14px; padding:32px 28px; box-shadow:0 2px 12px rgba(0,0,0,.06); border-top:4px solid #1B6CA8; transition:transform .2s, box-shadow .2s; }
.me-sv__card:hover { transform:translateY(-4px); box-shadow:0 8px 24px rgba(0,0,0,.12); }
.me-sv__icon { width:52px; height:52px; background:#D5EBF8; border-radius:12px; display:flex; align-items:center; justify-content:center; font-size:1.4rem; color:#1B6CA8; margin-bottom:16px; }
.me-sv__card h3 { font-size:1.05rem; font-weight:700; color:#02042B; margin:0 0 8px; }
.me-sv__card p { font-size:.9rem; color:#555; line-height:1.6; margin:0; }

/* ── S3: Barandales highlight ── */
.me-bar { padding:80px 0; background:#D5EBF8; }
.me-bar__grid { display:grid; grid-template-columns:1fr 1fr; gap:60px; align-items:center; }
.me-bar__imgs { display:grid; grid-template-columns:1fr 1fr; gap:12px; }
.me-bar__img { width:100%; height:210px; object-fit:cover; border-radius:12px; }
.me-bar__img--tall { grid-column:1/-1; height:250px; }
.me-bar__checks { list-style:none; margin:24px 0 0; padding:0; display:flex; flex-direction:column; gap:12px; }
.me-bar__checks li { display:flex; align-items:flex-start; gap:10px; font-size:.95rem; color:#333; line-height:1.5; }
.me-bar__checks li i { color:#1B6CA8; flex-shrink:0; margin-top:3px; }

/* ── S4: Galería de proyectos ── */
.me-gal { padding:80px 0; }
.me-gal__grid { columns:3; column-gap:16px; margin-top:48px; }
.me-gal__item { break-inside:avoid; margin-bottom:16px; position:relative; cursor:pointer; border-radius:12px; overflow:hidden; }
.me-gal__item img { width:100%; display:block; transition:transform .35s; }
.me-gal__item:hover img { transform:scale(1.05); }
.me-gal__overlay { position:absolute; inset:0; background:rgba(2,4,43,.5); display:flex; align-items:center; justify-content:center; opacity:0; transition:opacity .25s; }
.me-gal__item:hover .me-gal__overlay { opacity:1; }
.me-gal__overlay i { color:#fff; font-size:1.8rem; }
.me-gal__label { position:absolute; bottom:0; left:0; right:0; background:linear-gradient(to top,rgba(2,4,43,.85),transparent); color:#fff; font-size:.8rem; font-weight:600; padding:20px 14px 10px; }

/* Lightbox galería */
.me-lightbox { position:fixed; inset:0; background:rgba(0,0,0,.88); display:flex; align-items:center; justify-content:center; z-index:9999; opacity:0; visibility:hidden; transition:opacity .3s, visibility .3s; }
.me-lightbox.is-open { opacity:1; visibility:visible; }
.me-lightbox__img { max-width:90vw; max-height:85vh; border-radius:8px; object-fit:contain; }
.me-lightbox__close { position:absolute; top:20px; right:24px; background:none; border:none; color:#fff; font-size:2rem; cursor:pointer; line-height:1; }
.me-lightbox__caption { position:absolute; bottom:24px; left:50%; transform:translateX(-50%); color:#fff; font-size:.9rem; background:rgba(0,0,0,.5); padding:6px 16px; border-radius:20px; white-space:nowrap; }

/* ── S5: Before/After slider ── */
.me-baf { padding:80px 0; background:#F7F9FC; }
.me-baf__intro { text-align:center; max-width:640px; margin:0 auto; }
.me-baf__wrap { max-width:860px; margin:48px auto 0; }
.me-baf__slider { position:relative; overflow:hidden; border-radius:16px; user-select:none; cursor:ew-resize; box-shadow:0 8px 32px rgba(0,0,0,.15); }
.me-baf__before { display:block; width:100%; height:480px; object-fit:cover; pointer-events:none; }
.me-baf__after { position:absolute; inset:0; width:100%; height:100%; object-fit:cover; clip-path:inset(0 50% 0 0); pointer-events:none; }
.me-baf__handle { position:absolute; top:0; bottom:0; left:50%; width:3px; background:#fff; transform:translateX(-50%); cursor:ew-resize; z-index:10; box-shadow:0 0 8px rgba(0,0,0,.4); }
.me-baf__handle-btn { position:absolute; top:50%; left:50%; transform:translate(-50%,-50%); width:44px; height:44px; border-radius:50%; background:#fff; box-shadow:0 2px 14px rgba(0,0,0,.3); display:flex; align-items:center; justify-content:center; color:#1B6CA8; font-size:.9rem; pointer-events:none; }
.me-baf__labels { display:flex; justify-content:space-between; margin-top:16px; padding:0 4px; }
.me-baf__labels span { font-size:.82rem; font-weight:700; color:#666; text-transform:uppercase; letter-spacing:.06em; }
.me-baf__stats { display:grid; grid-template-columns:repeat(3,1fr); gap:24px; margin-top:48px; }
.me-baf__stat { text-align:center; background:#fff; border-radius:12px; padding:28px 20px; box-shadow:0 2px 8px rgba(0,0,0,.06); }
.me-baf__stat-num { font-size:2.2rem; font-weight:800; color:#1B6CA8; }
.me-baf__stat-lbl { font-size:.85rem; color:#666; margin-top:6px; }

/* ── S6: Proceso / Timeline ── */
.me-tl { padding:80px 0; }
.me-tl__track { display:flex; gap:0; margin-top:56px; position:relative; }
.me-tl__track::before { content:''; position:absolute; top:32px; left:5%; right:5%; height:3px; background:#D5EBF8; z-index:0; }
.me-tl__step { flex:1; display:flex; flex-direction:column; align-items:center; text-align:center; padding:0 8px; position:relative; z-index:1; }
.me-tl__dot { width:64px; height:64px; border-radius:50%; background:#1B6CA8; color:#fff; display:flex; align-items:center; justify-content:center; font-size:1.2rem; font-weight:800; margin-bottom:16px; box-shadow:0 4px 12px rgba(27,108,168,.4); flex-shrink:0; }
.me-tl__step h4 { font-size:.83rem; font-weight:700; color:#02042B; margin:0 0 6px; line-height:1.3; }
.me-tl__step p { font-size:.76rem; color:#666; margin:0; line-height:1.5; }

/* ── S7: Áreas ── */
.me-areas { padding:80px 0; background:#F7F9FC; }
.me-areas__grid { display:flex; flex-wrap:wrap; gap:12px; margin-top:40px; }
.me-areas__chip { display:flex; align-items:center; gap:8px; background:#fff; border:1.5px solid #D5EBF8; border-radius:40px; padding:10px 20px; font-size:.88rem; color:#02042B; font-weight:500; transition:background .2s, border-color .2s; }
.me-areas__chip i { color:#1B6CA8; }
.me-areas__chip:hover { background:#D5EBF8; border-color:#1B6CA8; }

/* ── S8: Beneficios ── */
.me-ben { padding:80px 0; }
.me-ben__grid { display:grid; grid-template-columns:repeat(3,1fr); gap:24px; margin-top:48px; }
.me-ben__card { background:#F7F9FC; border-radius:14px; padding:32px 24px; text-align:center; }
.me-ben__icon { font-size:2.4rem; color:#1B6CA8; margin-bottom:16px; }
.me-ben__card h3 { font-size:1rem; font-weight:700; color:#02042B; margin:0 0 10px; }
.me-ben__card p { font-size:.88rem; color:#555; line-height:1.6; margin:0; }

/* ── S9: Servicios relacionados ── */
.me-rel { padding:60px 0; background:#02042B; }
.me-rel h2 { color:#fff; text-align:center; margin-bottom:36px; font-size:1.7rem; font-weight:800; }
.me-rel__grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(200px,1fr)); gap:16px; }
.me-rel__card { background:rgba(255,255,255,.06); border:1px solid rgba(255,255,255,.1); border-radius:12px; padding:24px 20px; text-align:center; text-decoration:none; color:#fff; transition:background .2s; display:block; }
.me-rel__card:hover { background:rgba(213,235,248,.12); }
.me-rel__card i { font-size:1.8rem; color:#D5EBF8; margin-bottom:12px; display:block; }
.me-rel__card span { font-size:.9rem; font-weight:600; }

/* ── S10: Checklist de cotización ── */
.me-chk { padding:80px 0; background:#F7F9FC; }
.me-chk__grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(300px,1fr)); gap:14px; margin-top:40px; }
.me-chk__item { display:flex; align-items:flex-start; gap:12px; background:#fff; border-radius:10px; padding:16px 20px; border:1px solid #E0E6ED; }
.me-chk__num { width:32px; height:32px; border-radius:50%; background:#1B6CA8; color:#fff; display:flex; align-items:center; justify-content:center; font-size:.78rem; font-weight:700; flex-shrink:0; }
.me-chk__txt h4 { font-size:.9rem; font-weight:700; color:#02042B; margin:0 0 3px; }
.me-chk__txt p { font-size:.8rem; color:#666; margin:0; }

/* ── S11: Configurador ── */
.me-cfg { padding:80px 0; background:#02042B; }
.me-cfg__inner { max-width:800px; margin:0 auto; }
.me-cfg .me-tag { background:rgba(213,235,248,.2); color:#D5EBF8; }
.me-cfg .me-h2 { color:#fff; }
.me-cfg .me-lead { color:#aac0d5; }
.me-cfg__form { background:rgba(255,255,255,.05); border-radius:16px; padding:40px; margin-top:40px; border:1px solid rgba(255,255,255,.08); }
.me-cfg__row { display:grid; grid-template-columns:1fr 1fr; gap:20px; }
.me-cfg__group { display:flex; flex-direction:column; gap:6px; margin-bottom:20px; }
.me-cfg__group label { font-size:.85rem; font-weight:600; color:#D5EBF8; }
.me-cfg__group input,
.me-cfg__group select,
.me-cfg__group textarea { background:rgba(255,255,255,.07); border:1px solid rgba(255,255,255,.15); border-radius:8px; padding:12px 16px; color:#fff; font-family:inherit; font-size:.92rem; outline:none; transition:border-color .2s; width:100%; box-sizing:border-box; }
.me-cfg__group input::placeholder,
.me-cfg__group textarea::placeholder { color:rgba(255,255,255,.35); }
.me-cfg__group input:focus,
.me-cfg__group select:focus,
.me-cfg__group textarea:focus { border-color:#1B6CA8; }
.me-cfg__group select option { background:#02042B; color:#fff; }
.me-cfg__group textarea { resize:vertical; min-height:100px; }
.me-cfg__btn { display:block; width:100%; padding:16px; background:#1B6CA8; color:#fff; border:none; border-radius:10px; font-size:1rem; font-weight:700; cursor:pointer; font-family:inherit; transition:background .2s; }
.me-cfg__btn:hover { background:#145a8e; }

/* ── S12: FAQ ── */
.me-faq { padding:80px 0; }
.me-faq__list { max-width:820px; margin:48px auto 0; display:flex; flex-direction:column; gap:12px; }
.me-faq__item { border:1px solid #E0E6ED; border-radius:12px; overflow:hidden; }
.me-faq__q { display:flex; justify-content:space-between; align-items:center; padding:20px 24px; cursor:pointer; background:#fff; transition:background .2s; }
.me-faq__q:hover { background:#F7F9FC; }
.me-faq__q h3 { font-size:.95rem; font-weight:600; color:#02042B; margin:0; flex:1; line-height:1.4; }
.me-faq__q i { font-size:1rem; color:#1B6CA8; transition:transform .3s; flex-shrink:0; margin-left:16px; }
.me-faq__item.is-open .me-faq__q i { transform:rotate(180deg); }
.me-faq__a { max-height:0; overflow:hidden; transition:max-height .4s ease; }
.me-faq__item.is-open .me-faq__a { max-height:400px; }
.me-faq__a p { padding:0 24px 20px; margin:0; font-size:.9rem; color:#555; line-height:1.7; }

/* ── S13: CTA final ── */
.me-cta { padding:100px 0; background:#02042B; position:relative; overflow:hidden; }
.me-cta__bg { position:absolute; inset:0; background-image:url('../img/barandales2.jpeg'); background-size:cover; background-position:center; opacity:.18; pointer-events:none; }
.me-cta__inner { position:relative; z-index:1; text-align:center; max-width:700px; margin:0 auto; }
.me-cta__inner h2 { font-size:2.4rem; font-weight:800; color:#fff; margin:0 0 16px; line-height:1.2; }
.me-cta__inner p { font-size:1.05rem; color:#aac0d5; margin:0 0 40px; line-height:1.7; }
.me-cta__btns { display:flex; gap:16px; justify-content:center; flex-wrap:wrap; }
.me-cta__btn { padding:16px 36px; border-radius:10px; font-size:1rem; font-weight:700; text-decoration:none; transition:transform .2s, background .2s; display:inline-flex; align-items:center; gap:10px; }
.me-cta__btn--primary { background:#1B6CA8; color:#fff; }
.me-cta__btn--primary:hover { background:#145a8e; transform:translateY(-2px); }
.me-cta__btn--wa { background:#25D366; color:#fff; }
.me-cta__btn--wa:hover { background:#1eb357; transform:translateY(-2px); }

/* ── Responsive ── */
@media (max-width:1100px) {
  .me-tl__track { flex-wrap:wrap; gap:32px; }
  .me-tl__track::before { display:none; }
  .me-tl__step { flex:0 0 calc(50% - 16px); }
  .me-ben__grid { grid-template-columns:repeat(2,1fr); }
}
@media (max-width:1024px) {
  .me-intro__grid,
  .me-bar__grid { grid-template-columns:1fr; gap:40px; }
  .me-intro__img-wrap { order:-1; }
  .me-intro__float { left:0; bottom:-10px; }
  .me-gal__grid { columns:2; }
  .me-baf__before { height:320px; }
  .me-cfg__row { grid-template-columns:1fr; }
}
@media (max-width:768px) {
  .me-section, .me-intro, .me-sv, .me-bar, .me-gal, .me-baf, .me-tl, .me-areas, .me-ben, .me-chk, .me-cfg, .me-faq { padding:56px 0; }
  .me-h2 { font-size:1.6rem; }
  .me-sv__grid { grid-template-columns:1fr 1fr; }
  .me-gal__grid { columns:1; }
  .me-baf__stats { grid-template-columns:1fr; }
  .me-tl__step { flex:0 0 100%; }
  .me-ben__grid { grid-template-columns:1fr; }
  .me-rel__grid { grid-template-columns:repeat(2,1fr); }
  .me-cfg__form { padding:24px; }
  .me-baf__before { height:240px; }
  .me-cta__inner h2 { font-size:1.8rem; }
}
@media (max-width:480px) {
  .me-sv__grid { grid-template-columns:1fr; }
  .me-bar__imgs { grid-template-columns:1fr; }
  .me-bar__img, .me-bar__img--tall { height:180px; }
  .me-chk__grid { grid-template-columns:1fr; }
  .me-rel__grid { grid-template-columns:1fr; }
  .me-cta__btn { width:100%; justify-content:center; }
}