/* =============================================================
   calderas.css  —  prefix .cb-
   ============================================================= */

.cb-container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.cb-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; }
.cb-h2 { font-size:2rem; font-weight:800; color:#02042B; margin:0 0 12px; line-height:1.2; }
.cb-h3 { font-size:1.15rem; font-weight:700; color:#02042B; margin:0 0 8px; }
.cb-lead { font-size:1.02rem; color:#444; line-height:1.75; }
.cb-reveal { opacity:0; transform:translateY(28px); transition:opacity .6s ease, transform .6s ease; }
.cb-reveal.visible { opacity:1; transform:none; }

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

/* ── S1: Intro ── */
.cb-intro { padding:80px 0; }
.cb-intro__grid { display:grid; grid-template-columns:1fr 1fr; gap:64px; align-items:center; }
.cb-intro__kpis { display:grid; grid-template-columns:1fr 1fr; gap:16px; margin-top:32px; }
.cb-intro__kpi { background:#F7F9FC; border-radius:12px; padding:18px; border-left:4px solid #1B6CA8; display:flex; align-items:flex-start; gap:12px; }
.cb-intro__kpi i { color:#1B6CA8; font-size:1.2rem; margin-top:2px; flex-shrink:0; }
.cb-intro__kpi-lbl { font-size:.88rem; font-weight:600; color:#02042B; line-height:1.4; }
.cb-intro__btns { display:flex; gap:12px; margin-top:32px; flex-wrap:wrap; }
.cb-btn { padding:13px 28px; border-radius:9px; font-size:.95rem; font-weight:700; text-decoration:none; display:inline-flex; align-items:center; gap:8px; transition:transform .2s, background .2s, box-shadow .2s; cursor:pointer; border:none; font-family:inherit; }
.cb-btn--primary { background:#1B6CA8; color:#fff; }
.cb-btn--primary:hover { background:#145a8e; transform:translateY(-2px); }
.cb-btn--outline { background:#fff; color:#1B6CA8; border:2px solid #1B6CA8; }
.cb-btn--outline:hover { background:#D5EBF8; }
.cb-intro__img-wrap { position:relative; }
.cb-intro__img { width:100%; height:440px; object-fit:cover; border-radius:16px; cursor:pointer; transition:transform .3s; }
.cb-intro__img:hover { transform:scale(1.01); }
.cb-intro__float { position:absolute; bottom:-18px; left:-18px; background:#02042B; color:#fff; border-radius:12px; padding:16px 20px; min-width:200px; box-shadow:0 8px 24px rgba(0,0,0,.25); }
.cb-intro__float i { color:#D5EBF8; font-size:1.4rem; margin-bottom:8px; display:block; }
.cb-intro__float-txt { font-size:.82rem; line-height:1.5; color:#cdd8e5; }

/* ── S2: Por qué mantenimiento ── */
.cb-why { padding:80px 0; background:#F7F9FC; }
.cb-why__head { text-align:center; max-width:680px; margin:0 auto 56px; }
.cb-why__cols { display:grid; grid-template-columns:1fr 1fr; gap:32px; }
.cb-why__col { border-radius:16px; padding:36px 32px; }
.cb-why__col--bad { background:#fff3f3; border:1.5px solid #f5c6c6; }
.cb-why__col--good { background:#f0faf4; border:1.5px solid #a8d5b5; }
.cb-why__col-head { display:flex; align-items:center; gap:12px; margin-bottom:24px; }
.cb-why__col-head i { font-size:1.6rem; }
.cb-why__col--bad .cb-why__col-head i { color:#c0392b; }
.cb-why__col--good .cb-why__col-head i { color:#27ae60; }
.cb-why__col-head h3 { font-size:1.05rem; font-weight:800; margin:0; }
.cb-why__col--bad .cb-why__col-head h3 { color:#c0392b; }
.cb-why__col--good .cb-why__col-head h3 { color:#1e8449; }
.cb-why__list { list-style:none; margin:0; padding:0; display:flex; flex-direction:column; gap:12px; }
.cb-why__list li { display:flex; align-items:flex-start; gap:10px; font-size:.92rem; color:#333; line-height:1.5; }
.cb-why__list li i { flex-shrink:0; margin-top:2px; }
.cb-why__col--bad .cb-why__list li i { color:#e74c3c; }
.cb-why__col--good .cb-why__list li i { color:#27ae60; }

/* ── S3: Servicios grid ── */
.cb-sv { padding:80px 0; }
.cb-sv__head { text-align:center; max-width:680px; margin:0 auto 52px; }
.cb-sv__grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(280px,1fr)); gap:24px; }
.cb-sv__card { background:#fff; border-radius:14px; padding:28px 24px; box-shadow:0 2px 12px rgba(0,0,0,.07); border-top:4px solid #1B6CA8; transition:transform .2s, box-shadow .2s; }
.cb-sv__card:hover { transform:translateY(-4px); box-shadow:0 8px 24px rgba(0,0,0,.13); }
.cb-sv__icon { width:50px; height:50px; background:#D5EBF8; border-radius:11px; display:flex; align-items:center; justify-content:center; font-size:1.3rem; color:#1B6CA8; margin-bottom:14px; }
.cb-sv__card h3 { font-size:1rem; font-weight:700; color:#02042B; margin:0 0 8px; }
.cb-sv__card p { font-size:.87rem; color:#555; line-height:1.6; margin:0; }

/* ── S4: Trabajo en campo ── */
.cb-field { padding:80px 0; background:#F7F9FC; }
.cb-field__grid { display:grid; grid-template-columns:1fr 1fr; gap:64px; align-items:center; }
.cb-field__img-wrap { position:relative; }
.cb-field__img { width:100%; height:420px; object-fit:cover; border-radius:16px; cursor:pointer; transition:transform .3s; }
.cb-field__img:hover { transform:scale(1.01); }
.cb-field__zoom { position:absolute; top:16px; right:16px; background:rgba(2,4,43,.65); color:#fff; width:40px; height:40px; border-radius:50%; display:flex; align-items:center; justify-content:center; font-size:.95rem; pointer-events:none; }
.cb-field__list { list-style:none; margin:20px 0 28px; padding:0; display:flex; flex-direction:column; gap:10px; }
.cb-field__list li { display:flex; align-items:flex-start; gap:10px; font-size:.92rem; color:#333; line-height:1.5; }
.cb-field__list li i { color:#1B6CA8; flex-shrink:0; margin-top:3px; }

/* ── S5: Tipos de calderas ── */
.cb-tipos { padding:80px 0; }
.cb-tipos__head { text-align:center; max-width:680px; margin:0 auto 52px; }
.cb-tipos__grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(280px,1fr)); gap:24px; }
.cb-tipos__card { background:#F7F9FC; border-radius:14px; padding:28px 24px; border:1.5px solid #e0e8f0; transition:border-color .2s, box-shadow .2s; }
.cb-tipos__card:hover { border-color:#1B6CA8; box-shadow:0 4px 16px rgba(27,108,168,.12); }
.cb-tipos__icon { font-size:2rem; color:#1B6CA8; margin-bottom:14px; }
.cb-tipos__card h3 { font-size:1rem; font-weight:700; color:#02042B; margin:0 0 8px; }
.cb-tipos__card p { font-size:.87rem; color:#555; line-height:1.6; margin:0; }
.cb-tipos__note { background:#D5EBF8; border-radius:12px; padding:20px 24px; margin-top:32px; font-size:.9rem; color:#02042B; display:flex; gap:12px; align-items:flex-start; }
.cb-tipos__note i { color:#1B6CA8; font-size:1.1rem; flex-shrink:0; margin-top:2px; }

/* ── S6: Proceso timeline ── */
.cb-proc { padding:80px 0; background:#02042B; }
.cb-proc .cb-h2 { color:#fff; }
.cb-proc .cb-lead { color:#aac0d5; }
.cb-proc__head { text-align:center; max-width:680px; margin:0 auto 60px; }
.cb-proc__track { display:grid; grid-template-columns:repeat(5,1fr); gap:0; position:relative; }
.cb-proc__track::before { content:''; position:absolute; top:28px; left:5%; right:5%; height:2px; background:rgba(213,235,248,.25); z-index:0; }
.cb-proc__step { display:flex; flex-direction:column; align-items:center; text-align:center; padding:0 8px; position:relative; z-index:1; margin-bottom:40px; }
.cb-proc__dot { width:56px; height:56px; border-radius:50%; background:#1B6CA8; color:#fff; display:flex; align-items:center; justify-content:center; font-size:1rem; font-weight:800; margin-bottom:14px; box-shadow:0 4px 14px rgba(27,108,168,.5); flex-shrink:0; }
.cb-proc__step h4 { font-size:.82rem; font-weight:700; color:#D5EBF8; margin:0 0 5px; line-height:1.3; }
.cb-proc__step p { font-size:.74rem; color:#7a9ab5; margin:0; line-height:1.5; }

/* ── S7: Problemas frecuentes ── */
.cb-prb { padding:80px 0; background:#F7F9FC; }
.cb-prb__head { text-align:center; max-width:680px; margin:0 auto 52px; }
.cb-prb__grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(280px,1fr)); gap:24px; }
.cb-prb__card { background:#fff; border-radius:14px; padding:28px 24px; box-shadow:0 2px 10px rgba(0,0,0,.06); border-left:4px solid #1B6CA8; }
.cb-prb__head-row { display:flex; align-items:center; gap:10px; margin-bottom:16px; }
.cb-prb__head-row i { font-size:1.3rem; color:#e74c3c; }
.cb-prb__head-row h3 { font-size:1rem; font-weight:700; color:#02042B; margin:0; }
.cb-prb__row { display:flex; align-items:flex-start; gap:8px; margin-bottom:8px; font-size:.85rem; line-height:1.5; }
.cb-prb__row strong { font-weight:700; color:#555; flex-shrink:0; }
.cb-prb__sol { display:flex; align-items:flex-start; gap:8px; font-size:.85rem; line-height:1.5; background:#f0faf4; border-radius:8px; padding:10px 12px; margin-top:10px; }
.cb-prb__sol i { color:#27ae60; flex-shrink:0; margin-top:2px; }

/* ── S8: Refacciones ── */
.cb-ref { padding:80px 0; }
.cb-ref__head { text-align:center; max-width:680px; margin:0 auto 48px; }
.cb-ref__grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(160px,1fr)); gap:12px; }
.cb-ref__item { background:#F7F9FC; border:1.5px solid #e0e8f0; border-radius:10px; padding:14px 16px; display:flex; align-items:center; gap:10px; font-size:.86rem; font-weight:500; color:#02042B; transition:background .2s, border-color .2s; }
.cb-ref__item i { color:#1B6CA8; font-size:.95rem; flex-shrink:0; }
.cb-ref__item:hover { background:#D5EBF8; border-color:#1B6CA8; }
.cb-ref__links { display:flex; flex-wrap:wrap; gap:12px; margin-top:36px; justify-content:center; }
.cb-ref__link { display:inline-flex; align-items:center; gap:7px; background:#02042B; color:#D5EBF8; text-decoration:none; padding:10px 20px; border-radius:8px; font-size:.85rem; font-weight:600; transition:background .2s; }
.cb-ref__link:hover { background:#1B6CA8; color:#fff; }

/* ── S9: Normativas ── */
.cb-norm { padding:80px 0; background:#F7F9FC; }
.cb-norm__head { text-align:center; max-width:680px; margin:0 auto 52px; }
.cb-norm__grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(260px,1fr)); gap:24px; }
.cb-norm__card { background:#fff; border-radius:14px; padding:28px 24px; box-shadow:0 2px 10px rgba(0,0,0,.06); text-align:center; }
.cb-norm__badge { display:inline-block; background:#02042B; color:#D5EBF8; font-size:.7rem; font-weight:800; letter-spacing:.1em; padding:6px 14px; border-radius:20px; margin-bottom:16px; }
.cb-norm__card h3 { font-size:.95rem; font-weight:700; color:#02042B; margin:0 0 10px; }
.cb-norm__card p { font-size:.85rem; color:#555; line-height:1.6; margin:0; }
.cb-norm__note { margin-top:32px; background:#fff8e1; border:1.5px solid #f9d66a; border-radius:12px; padding:20px 24px; display:flex; gap:12px; align-items:flex-start; font-size:.88rem; color:#444; line-height:1.6; }
.cb-norm__note i { color:#f0ad00; font-size:1.2rem; flex-shrink:0; margin-top:2px; }

/* ── S10: Indicadores ── */
.cb-kpi { padding:80px 0; background:#02042B; }
.cb-kpi__head { text-align:center; max-width:680px; margin:0 auto 52px; }
.cb-kpi__head .cb-h2 { color:#fff; }
.cb-kpi__head .cb-lead { color:#aac0d5; }
.cb-kpi__grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(220px,1fr)); gap:20px; }
.cb-kpi__card { background:rgba(255,255,255,.06); border:1px solid rgba(213,235,248,.2); border-radius:14px; padding:28px 22px; text-align:center; }
.cb-kpi__icon { font-size:2rem; color:#D5EBF8; margin-bottom:14px; }
.cb-kpi__card h4 { font-size:.9rem; font-weight:700; color:#fff; margin:0 0 8px; }
.cb-kpi__card p { font-size:.8rem; color:#7a9ab5; margin:0; line-height:1.5; }
.cb-kpi__note { text-align:center; color:#aac0d5; font-size:.9rem; margin-top:40px; max-width:700px; margin-left:auto; margin-right:auto; line-height:1.7; }

/* ── S11: Checklist ── */
.cb-chk { padding:80px 0; background:#F7F9FC; }
.cb-chk__head { text-align:center; max-width:680px; margin:0 auto 48px; }
.cb-chk__grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(280px,1fr)); gap:12px; }
.cb-chk__item { display:flex; align-items:flex-start; gap:12px; background:#fff; border-radius:10px; padding:14px 18px; border:1px solid #E0E6ED; }
.cb-chk__num { width:30px; height:30px; border-radius:50%; background:#1B6CA8; color:#fff; display:flex; align-items:center; justify-content:center; font-size:.75rem; font-weight:700; flex-shrink:0; }
.cb-chk__txt h4 { font-size:.88rem; font-weight:700; color:#02042B; margin:0; }
.cb-chk__note { margin-top:24px; background:#D5EBF8; border-radius:10px; padding:16px 20px; font-size:.88rem; color:#02042B; display:flex; gap:10px; align-items:flex-start; }
.cb-chk__note i { color:#1B6CA8; flex-shrink:0; margin-top:2px; }

/* ── S12: Configurador ── */
.cb-cfg { padding:80px 0; background:#02042B; }
.cb-cfg__inner { max-width:820px; margin:0 auto; }
.cb-cfg .cb-tag { background:rgba(213,235,248,.2); color:#D5EBF8; }
.cb-cfg .cb-h2 { color:#fff; }
.cb-cfg .cb-lead { color:#aac0d5; }
.cb-cfg__form { background:rgba(255,255,255,.05); border-radius:16px; padding:40px; margin-top:40px; border:1px solid rgba(255,255,255,.08); }
.cb-cfg__row { display:grid; grid-template-columns:1fr 1fr; gap:20px; }
.cb-cfg__group { display:flex; flex-direction:column; gap:6px; margin-bottom:20px; }
.cb-cfg__group label { font-size:.84rem; font-weight:600; color:#D5EBF8; }
.cb-cfg__group input,
.cb-cfg__group select,
.cb-cfg__group textarea { background:rgba(255,255,255,.07); border:1px solid rgba(255,255,255,.15); border-radius:8px; padding:11px 15px; color:#fff; font-family:inherit; font-size:.9rem; outline:none; transition:border-color .2s; width:100%; box-sizing:border-box; }
.cb-cfg__group input::placeholder,
.cb-cfg__group textarea::placeholder { color:rgba(255,255,255,.32); }
.cb-cfg__group input:focus,
.cb-cfg__group select:focus,
.cb-cfg__group textarea:focus { border-color:#1B6CA8; }
.cb-cfg__group select option { background:#02042B; color:#fff; }
.cb-cfg__group textarea { resize:vertical; min-height:90px; }
.cb-cfg__preview { background:rgba(255,255,255,.04); border:1px solid rgba(213,235,248,.2); border-radius:10px; padding:20px 24px; margin-top:4px; display:none; }
.cb-cfg__preview h4 { color:#D5EBF8; font-size:.85rem; font-weight:700; margin:0 0 10px; }
.cb-cfg__preview pre { color:#cdd8e5; font-family:inherit; font-size:.83rem; white-space:pre-wrap; margin:0; line-height:1.6; }
.cb-cfg__preview.is-visible { display:block; }
.cb-cfg__msg { display:none; background:#1e8449; color:#fff; border-radius:8px; padding:12px 18px; font-size:.88rem; font-weight:600; margin-top:12px; }
.cb-cfg__msg.is-visible { display:block; }
.cb-cfg__btns { display:flex; gap:12px; flex-wrap:wrap; margin-top:8px; }
.cb-cfg__btn { padding:14px 28px; border-radius:9px; font-size:.95rem; font-weight:700; cursor:pointer; font-family:inherit; border:none; transition:background .2s; display:inline-flex; align-items:center; gap:8px; }
.cb-cfg__btn--gen { background:#1B6CA8; color:#fff; }
.cb-cfg__btn--gen:hover { background:#145a8e; }
.cb-cfg__btn--add { background:#27ae60; color:#fff; display:none; }
.cb-cfg__btn--add:hover { background:#1e8449; }
.cb-cfg__btn--add.is-visible { display:inline-flex; }

/* ── S13: FAQ ── */
.cb-faq { padding:80px 0; }
.cb-faq__head { text-align:center; max-width:680px; margin:0 auto 48px; }
.cb-faq__list { max-width:840px; margin:0 auto; display:flex; flex-direction:column; gap:12px; }
.cb-faq__item { border:1px solid #E0E6ED; border-radius:12px; overflow:hidden; }
.cb-faq__q { display:flex; justify-content:space-between; align-items:center; padding:19px 24px; cursor:pointer; background:#fff; transition:background .2s; }
.cb-faq__q:hover { background:#F7F9FC; }
.cb-faq__q h3 { font-size:.93rem; font-weight:600; color:#02042B; margin:0; flex:1; line-height:1.4; }
.cb-faq__q i { font-size:.95rem; color:#1B6CA8; transition:transform .3s; flex-shrink:0; margin-left:16px; }
.cb-faq__item.is-open .cb-faq__q i { transform:rotate(180deg); }
.cb-faq__a { max-height:0; overflow:hidden; transition:max-height .4s ease; }
.cb-faq__item.is-open .cb-faq__a { max-height:500px; }
.cb-faq__a p { padding:0 24px 20px; margin:0; font-size:.88rem; color:#555; line-height:1.75; }

/* ── S14: CTA final ── */
.cb-cta { padding:100px 0; background:#02042B; position:relative; overflow:hidden; }
.cb-cta__bg { position:absolute; inset:0; background-image:url('../img/reparando_caldera.png'); background-size:cover; background-position:center; opacity:.15; pointer-events:none; }
.cb-cta__inner { position:relative; z-index:1; text-align:center; max-width:720px; margin:0 auto; }
.cb-cta__inner h2 { font-size:2.3rem; font-weight:800; color:#fff; margin:0 0 16px; line-height:1.25; }
.cb-cta__inner p { font-size:1.02rem; color:#aac0d5; margin:0 0 40px; line-height:1.75; }
.cb-cta__btns { display:flex; gap:16px; justify-content:center; flex-wrap:wrap; }
.cb-cta__btn { padding:15px 34px; border-radius:10px; font-size:1rem; font-weight:700; text-decoration:none; display:inline-flex; align-items:center; gap:10px; transition:transform .2s, background .2s; }
.cb-cta__btn--primary { background:#1B6CA8; color:#fff; }
.cb-cta__btn--primary:hover { background:#145a8e; transform:translateY(-2px); }
.cb-cta__btn--wa { background:#25D366; color:#fff; }
.cb-cta__btn--wa:hover { background:#1eb357; transform:translateY(-2px); }

/* Lightbox */
.cb-lightbox { position:fixed; inset:0; background:rgba(0,0,0,.9); display:flex; align-items:center; justify-content:center; z-index:9999; opacity:0; visibility:hidden; transition:opacity .3s, visibility .3s; }
.cb-lightbox.is-open { opacity:1; visibility:visible; }
.cb-lightbox__img { max-width:90vw; max-height:88vh; object-fit:contain; border-radius:8px; }
.cb-lightbox__close { position:absolute; top:18px; right:22px; background:none; border:none; color:#fff; font-size:2rem; cursor:pointer; line-height:1; }

/* ── Responsive ── */
@media (max-width:1100px) {
  .cb-proc__track { grid-template-columns:repeat(3,1fr); }
  .cb-proc__track::before { display:none; }
}
@media (max-width:1024px) {
  .cb-intro__grid,
  .cb-field__grid { grid-template-columns:1fr; gap:40px; }
  .cb-intro__img-wrap { order:-1; }
  .cb-intro__float { left:0; bottom:-10px; }
  .cb-why__cols { grid-template-columns:1fr; }
  .cb-cfg__row { grid-template-columns:1fr; }
}
@media (max-width:768px) {
  .cb-h2 { font-size:1.6rem; }
  .cb-intro, .cb-why, .cb-sv, .cb-field, .cb-tipos, .cb-proc, .cb-prb,
  .cb-ref, .cb-norm, .cb-kpi, .cb-chk, .cb-cfg, .cb-faq { padding:56px 0; }
  .cb-intro__kpis { grid-template-columns:1fr; }
  .cb-proc__track { grid-template-columns:1fr; }
  .cb-proc__track::before { display:none; }
  .cb-cfg__form { padding:24px; }
  .cb-cta__inner h2 { font-size:1.75rem; }
  .cb-cta { padding:72px 0; }
}
@media (max-width:480px) {
  .cb-intro__btns { flex-direction:column; }
  .cb-cta__btn { width:100%; justify-content:center; }
  .cb-ref__grid { grid-template-columns:repeat(2,1fr); }
}