/* Presentaciones de casos de éxito · Sillar Systems
   Plantilla común para caso-carta-tetuan, caso-carta-piccola y caso-piccola-mamba. */
:root{
  --barro:#B85C38;--barro-btn:#9C4A2A;--barro-btn-hover:#83391D;
  --albero:#E0A93B;--olivo:#2E6E5A;--olivo-text:#2E6E5A;
  --bg:#F7EDE2;--bg-2:#F0E2D1;--surface:#FBF6EF;
  --ink:#2A2521;--ink-2:#5a5049;--line:rgba(42,37,33,.12);
  --block:#2A2521;--on-block:#F7EDE2;--on-block-2:rgba(247,237,226,.74);--block-line:rgba(247,237,226,.14);
  --accent-text:#9C4A2A;
  --paper-shadow:0 2px 4px rgba(60,30,15,.08),0 24px 48px -20px rgba(60,30,15,.4);
  --r:6px;
  --ease-out:cubic-bezier(0.23,1,0.32,1);
  --ease-in-out:cubic-bezier(0.77,0,0.175,1);
}
@media (prefers-color-scheme:dark){
  :root{
    --barro:#D27450;--barro-btn:#C2633E;--barro-btn-hover:#D27450;--olivo-text:#7FB8A3;
    --bg:#1B1714;--bg-2:#231E1A;--surface:#28221E;
    --ink:#F3E8DC;--ink-2:#B9AC9F;--line:rgba(243,232,220,.12);
    --block:#2C2521;--on-block:#F3E8DC;--on-block-2:rgba(243,232,220,.72);--block-line:rgba(243,232,220,.12);
    --accent-text:#E08A64;
    --paper-shadow:0 2px 4px rgba(0,0,0,.3),0 24px 48px -20px rgba(0,0,0,.8);
  }
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-snap-type:y proximity}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{font-family:'Inter',system-ui,sans-serif;background:var(--bg);color:var(--ink);line-height:1.65;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
:focus-visible{outline:2px solid var(--albero);outline-offset:3px;border-radius:2px}
.wrap{max-width:1200px;margin:0 auto;padding:0 32px;width:100%}
h1,h2,h3{font-family:'Fraunces',serif;font-weight:500;letter-spacing:-.015em}
h1{font-size:clamp(40px,5vw,68px);line-height:1.05}
h1 em,h2 em{font-style:italic;color:var(--barro)}
h2{font-size:clamp(30px,3.6vw,48px);line-height:1.08;max-width:17em}
h3{font-size:22px;line-height:1.2}
.lead{font-size:19px;color:var(--ink-2);max-width:34em;margin-top:20px}
.kicker{display:inline-flex;align-items:center;gap:10px;font-family:'Geist Mono',monospace;font-size:13px;letter-spacing:.04em;color:var(--olivo-text);margin-bottom:22px}
.kicker::before{content:"";width:28px;height:1px;background:var(--albero)}

/* ---------- barra superior y progreso ---------- */
.topbar{position:fixed;inset:0 0 auto;z-index:40;height:64px;background:color-mix(in srgb,var(--bg) 86%,transparent);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.topbar .wrap{height:100%;display:flex;align-items:center;justify-content:space-between;gap:20px}
.topbar .logo img{height:38px;width:auto}
.topbar nav{display:flex;align-items:center;gap:22px;font-size:14.5px}
.topbar nav a.back{color:var(--ink-2);display:inline-flex;align-items:center;gap:6px;transition:color .2s ease}
.topbar nav a.back:hover{color:var(--ink)}
.logo-dark{display:none}
@media (prefers-color-scheme:dark){.logo-light{display:none}.logo-dark{display:block}}
.progress{position:fixed;left:0;top:0;height:3px;width:100%;z-index:41;background:var(--albero);transform-origin:left;transform:scaleX(0)}
@supports (animation-timeline:scroll()){
  .progress{animation:grow linear both;animation-timeline:scroll(root)}
}
@keyframes grow{to{transform:scaleX(1)}}

/* índice lateral */
.dots{position:fixed;right:22px;top:50%;transform:translateY(-50%);z-index:30;display:flex;flex-direction:column;gap:12px}
.dots a{position:relative;display:block;width:10px;height:10px;border-radius:50%;border:1.5px solid var(--ink-2);transition:background-color .2s ease,border-color .2s ease,transform .2s var(--ease-out)}
.dots a.on{background:var(--barro);border-color:var(--barro);transform:scale(1.25)}
.dots a span{position:absolute;right:22px;top:50%;transform:translate(6px,-50%);white-space:nowrap;font-size:12.5px;padding:4px 10px;border-radius:4px;background:var(--block);color:var(--on-block);opacity:0;pointer-events:none;transition:opacity .18s ease,transform .18s var(--ease-out)}
@media (hover:hover) and (pointer:fine){.dots a:hover span{opacity:1;transform:translate(0,-50%)}}

/* ---------- botones y enlaces ---------- */
.btn{display:inline-flex;align-items:center;gap:10px;white-space:nowrap;font-weight:500;font-size:15px;padding:12px 20px;border-radius:var(--r);transition:transform 140ms var(--ease-out),background-color .2s ease,border-color .2s ease}
.btn:active{transform:scale(.97)}
.btn-primary{background:var(--barro-btn);color:#FBF3EA}
.btn-primary:hover{background:var(--barro-btn-hover)}
.btn-ghost{border:1px solid var(--line)}
.btn-ghost:hover{border-color:var(--ink)}
.btn-albero{background:var(--albero);color:#2A2521;font-weight:600}
.btn-albero:hover{background:#ebb851}
.topbar .btn{padding:9px 16px;font-size:14px}

/* ---------- diapositivas ---------- */
.slide{min-height:100dvh;padding:120px 0 80px;display:flex;align-items:center;scroll-snap-align:start;position:relative}
.slide.dark{background:var(--client,var(--block));color:#F4EFE6}
.slide.dark .lead,.slide.dark p{color:rgba(244,239,230,.78)}
.slide.dark .kicker{color:var(--albero)}
.slide.dark h2 em{color:var(--albero)}
.slide.tint{background:var(--bg-2)}

/* portada */
.cover{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.facts-row{display:flex;flex-wrap:wrap;gap:28px 40px;margin-top:36px;padding-top:26px;border-top:1px solid var(--line)}
.facts-row div{display:flex;flex-direction:column;font-size:15px}
.facts-row dt{font-size:12.5px;color:var(--ink-2);margin-bottom:2px}
.facts-row dd{font-weight:500}
.cover-art{position:relative;display:flex;justify-content:center;align-items:center;min-height:480px}
.cover-art .paper{position:absolute;width:52%;box-shadow:var(--paper-shadow);border-radius:2px}
.cover-art .paper:nth-child(1){transform:translateX(-34%) rotate(-7deg)}
.cover-art .paper:nth-child(2){transform:translateX(34%) rotate(6deg)}
.cover-art .paper:nth-child(3){position:relative;transform:translateY(-2%)}
@media (prefers-reduced-motion:no-preference){
  .cover-art .paper{animation:deal 1.1s var(--ease-out) both}
  .cover-art .paper:nth-child(1){--to:translateX(-34%) rotate(-7deg);animation-delay:.25s}
  .cover-art .paper:nth-child(2){--to:translateX(34%) rotate(6deg);animation-delay:.38s}
  .cover-art .paper:nth-child(3){--to:translateY(-2%);animation-delay:.1s}
  .cover-copy > *{animation:rise .8s var(--ease-out) both}
  .cover-copy > *:nth-child(2){animation-delay:.08s}
  .cover-copy > *:nth-child(3){animation-delay:.16s}
  .cover-copy > *:nth-child(4){animation-delay:.24s}
}
@keyframes deal{from{opacity:0;transform:translateY(60px) rotate(0deg) scale(.94)}to{opacity:1;transform:var(--to)}}
@keyframes rise{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:none}}

/* antes / después */
.compare-wrap{display:grid;grid-template-columns:1fr 1.05fr;gap:64px;align-items:center}
.compare{position:relative;aspect-ratio:var(--ratio,.707);height:min(74dvh,760px);width:auto;max-width:100%;justify-self:center;border-radius:3px;overflow:hidden;box-shadow:var(--paper-shadow);user-select:none;--pos:50%;background:#fff}
.compare img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.compare .after{clip-path:inset(0 0 0 var(--pos))}
.compare .rule{position:absolute;top:0;bottom:0;left:var(--pos);width:2px;margin-left:-1px;background:var(--albero);pointer-events:none}
.compare .knob{position:absolute;top:50%;left:var(--pos);width:44px;height:44px;margin:-22px 0 0 -22px;border-radius:50%;background:var(--albero);color:#2A2521;display:grid;place-items:center;font-size:20px;box-shadow:0 8px 20px -6px rgba(0,0,0,.5);pointer-events:none;transition:transform .2s var(--ease-out)}
.compare input{position:absolute;inset:0;width:100%;height:100%;opacity:0;cursor:ew-resize;margin:0}
.compare input:focus-visible ~ .knob{outline:3px solid var(--ink);outline-offset:3px}
.compare:active .knob{transform:scale(1.08)}
.compare .tag{position:absolute;top:14px;font-size:12.5px;font-weight:500;padding:4px 10px;border-radius:4px;background:rgba(42,37,33,.82);color:#F7EDE2;pointer-events:none}
.compare .tag.l{left:14px}.compare .tag.r{right:14px}

/* caras de la carta: lupa al pasar el ratón y visor a pantalla completa */
.spread{display:grid;grid-template-columns:repeat(var(--cols,4),1fr);gap:22px;margin-top:48px;align-items:start}
.page{position:relative;display:block;width:100%;text-align:left}
.page .sheet{position:relative;overflow:hidden;border-radius:2px;box-shadow:var(--paper-shadow);transition:transform .35s var(--ease-out)}
@media (hover:hover) and (pointer:fine){.page:hover .sheet{transform:translateY(-4px)}}
.page .cap{display:flex;justify-content:space-between;gap:10px;font-size:13.5px;color:var(--ink-2);margin-top:12px}
.slide.dark .page .cap{color:rgba(244,239,230,.7)}
.page .cap i{font-size:16px}
.lens{position:absolute;width:190px;height:190px;border-radius:50%;pointer-events:none;opacity:0;transform:translate(-50%,-50%) scale(.9);transition:opacity .15s ease,transform .2s var(--ease-out);box-shadow:0 0 0 3px var(--albero),0 18px 40px -10px rgba(0,0,0,.55);background-repeat:no-repeat;z-index:2;left:0;top:0}
.page.lensing .lens{opacity:1;transform:translate(-50%,-50%) scale(1)}
.hint{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--ink-2);margin-top:18px}
.slide.dark .hint{color:rgba(244,239,230,.7)}

/* detalles ampliados */
.details{display:grid;grid-template-columns:repeat(6,1fr);gap:18px;margin-top:48px}
.detail{grid-column:span 3;border-radius:var(--r);overflow:hidden;background:var(--surface);border:1px solid var(--line);display:flex;flex-direction:column}
.detail.wide{grid-column:span 6;display:grid;grid-template-columns:1.9fr 1fr;align-items:center}
.detail.wide figcaption{padding:28px 30px}
.detail.third{grid-column:span 2}
.detail .crop{overflow:hidden;background:#fff}
.detail .crop img{width:100%;transition:transform 1.2s var(--ease-out)}
@media (hover:hover) and (pointer:fine){.detail:hover .crop img{transform:scale(1.04)}}
.detail figcaption{padding:18px 20px 20px;font-size:15px;color:var(--ink-2)}
.detail figcaption strong{display:block;color:var(--ink);font-weight:600;margin-bottom:2px}
.slide.dark .detail{background:rgba(255,255,255,.05);border-color:rgba(255,255,255,.1)}
.slide.dark .detail figcaption strong{color:#F4EFE6}

/* proceso: línea que se dibuja con el scroll */
.process{position:relative;margin-top:52px;padding-left:44px;max-width:760px}
.process ol{display:grid;gap:34px}
.process::before{content:"";position:absolute;left:11px;top:6px;bottom:6px;width:2px;background:var(--line)}
.process .fill{position:absolute;left:11px;top:6px;bottom:6px;width:2px;background:var(--barro);transform-origin:top;transform:scaleY(1)}
@supports (animation-timeline:view()){
  @media (prefers-reduced-motion:no-preference){
    .process .fill{animation:fill linear both;animation-timeline:view();animation-range:entry 30% cover 65%}
  }
}
@keyframes fill{from{transform:scaleY(0)}to{transform:scaleY(1)}}
.process li{list-style:none;position:relative}
.process li::before{content:"";position:absolute;left:-40px;top:6px;width:16px;height:16px;border-radius:50%;background:var(--bg);border:2px solid var(--barro)}
.slide.tint .process li::before{background:var(--bg-2)}
.process h3{margin-bottom:6px}
.process p{color:var(--ink-2);font-size:16px;max-width:38em}

/* cifras */
.stats{display:grid;grid-template-columns:repeat(var(--cols,4),1fr);gap:14px;margin-top:48px}
.stat{padding:28px 26px;border-radius:var(--r);background:var(--surface);border:1px solid var(--line)}
.stat b{display:block;font-family:'Fraunces',serif;font-weight:500;font-size:clamp(36px,4vw,52px);line-height:1;color:var(--barro);font-variant-numeric:tabular-nums}
.stat span{display:block;margin-top:10px;font-size:14.5px;color:var(--ink-2)}
.slide.dark .stat{background:rgba(255,255,255,.05);border-color:rgba(255,255,255,.1)}
.slide.dark .stat b{color:var(--albero)}
.slide.dark .stat span{color:rgba(244,239,230,.72)}

/* flujo en pasos con imagen */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:48px}
.flow article{display:flex;flex-direction:column;gap:14px}
.flow .shot{aspect-ratio:3/4;border-radius:var(--r);background:var(--bg-2);display:flex;align-items:center;justify-content:center;padding:18px;overflow:hidden;border:1px solid var(--line)}
.slide.dark .flow .shot{background:rgba(255,255,255,.05);border-color:rgba(255,255,255,.1)}
.flow .shot img{max-height:100%;width:auto;border-radius:6px;box-shadow:0 18px 36px -16px rgba(0,0,0,.6)}
.flow .shot i{font-size:64px;color:var(--albero)}
.flow h3{font-size:20px}
.flow p{font-size:15px;color:var(--ink-2)}

.shot-frame{border-radius:10px;overflow:hidden;box-shadow:0 30px 60px -24px rgba(0,0,0,.55);border:1px solid rgba(255,255,255,.08)}
.split{display:grid;grid-template-columns:1fr 1.2fr;gap:56px;align-items:center}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:26px}
.chips li{list-style:none;font-size:13.5px;padding:6px 12px;border-radius:var(--r);border:1px solid var(--line);color:var(--ink-2)}
.slide.dark .chips li{border-color:rgba(255,255,255,.16);color:rgba(244,239,230,.8)}
.note{margin-top:28px;display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--ink-2);max-width:40em}
.note i{font-size:20px;color:var(--olivo-text);margin-top:2px}

/* cierre */
.end-box{display:grid;grid-template-columns:1.2fr .8fr;gap:48px;align-items:center;padding:60px 56px;border-radius:var(--r);background:var(--barro-btn);color:#FBF3EA}
.end-box h2{color:#FBF3EA}
.end-box p{color:rgba(251,243,234,.85);margin-top:14px;font-size:17px}
.end-box .side{display:flex;flex-direction:column;gap:12px}
.end-box .btn{justify-content:center}
.end-box .btn-ghost{border-color:rgba(251,243,234,.4);color:#FBF3EA}
.end-box .btn-ghost:hover{border-color:#FBF3EA}
.others{margin-top:40px;display:flex;flex-wrap:wrap;gap:12px 28px;font-size:15px;color:var(--ink-2)}
.others a{color:var(--ink);border-bottom:1px solid var(--line);transition:border-color .2s ease}
.others a:hover{border-color:var(--ink)}

/* visor */
dialog.viewer{margin:auto;border:0;padding:0;background:transparent;max-width:min(94vw,1100px);max-height:94dvh;overflow:visible}
dialog.viewer::backdrop{background:rgba(20,16,13,.82);backdrop-filter:blur(4px)}
dialog.viewer .inner{max-height:94dvh;overflow:auto;border-radius:4px;background:#fff;box-shadow:0 40px 80px -20px rgba(0,0,0,.6)}
dialog.viewer img{width:100%}
dialog.viewer .close{position:absolute;top:-14px;right:-14px;width:40px;height:40px;border-radius:50%;background:var(--albero);color:#2A2521;display:grid;place-items:center;font-size:20px;box-shadow:0 8px 20px -6px rgba(0,0,0,.5)}
@media (prefers-reduced-motion:no-preference){
  dialog.viewer[open]{animation:pop .24s var(--ease-out)}
}
@keyframes pop{from{opacity:0;transform:scale(.96)}to{opacity:1;transform:none}}

/* aparición al entrar en pantalla */
@media (prefers-reduced-motion:no-preference){
  .js [data-reveal]{opacity:0;transform:translateY(26px);transition:opacity .8s var(--ease-out),transform .8s var(--ease-out);transition-delay:calc(var(--d,0) * 70ms)}
  .js [data-reveal].in{opacity:1;transform:none}
}

/* ---------- responsive ---------- */
@media (max-width:1020px){
  .cover,.compare-wrap,.split{grid-template-columns:1fr;gap:48px}
  .cover-art{min-height:380px;max-width:560px;width:100%;margin:0 auto}
  .compare{height:auto;width:100%;max-width:520px}
  .spread{--cols:2 !important}
  .flow{grid-template-columns:repeat(2,1fr)}
  .stats{--cols:2 !important}
  .dots{display:none}
  .end-box{grid-template-columns:1fr;padding:44px 30px}
}
@media (max-width:640px){
  .wrap{padding:0 16px}
  .slide{padding:96px 0 64px;min-height:auto}
  html{scroll-snap-type:none}
  .topbar nav a.back span{display:none}
  .topbar .btn{display:none}
  .cover-art{min-height:300px}
  .details{grid-template-columns:1fr}
  .detail,.detail.wide,.detail.third{grid-column:auto}
  .detail.wide{display:flex}
  .flow{grid-template-columns:1fr}
  .flow .shot{aspect-ratio:4/3}
  .spread{gap:14px}
  .facts-row{gap:18px 28px}
}