:root{--green-900:#0c4d3d;--green-700:#2f8743;--green-600:#469b4d;--green-500:#62ad4f;--green-100:#edf7ea;--ink:#23363d;--muted:#5b666d;--line:#dfe4df;--white:#fff;--shadow:0 8px 28px rgba(30,72,46,.09)}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;min-height:100%;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:#f6f8f6}
body{display:flex;justify-content:center}
a{text-decoration:none;color:inherit}button,input{font:inherit}
.mobile-shell{width:100%;max-width:540px;min-height:100vh;background:#fff;position:relative;box-shadow:0 0 30px rgba(0,0,0,.06)}
.page-content{min-height:calc(100vh - 64px);padding:28px 22px calc(126px + env(safe-area-inset-bottom));overflow:hidden;background:radial-gradient(circle at 5% 35%,rgba(115,181,78,.05),transparent 25%),#fff}
.progress{display:flex;align-items:center;margin:4px 18px 34px}.step{width:46px;height:46px;border-radius:50%;display:grid;place-items:center;font-weight:800;font-size:21px;border:2px solid #dedede;background:#f2f2f2;color:#646464;z-index:2}.step.done{background:#fff;border-color:var(--green-600);color:var(--green-700)}.step.active{background:var(--green-600);border-color:var(--green-600);color:#fff}.bar{height:4px;flex:1;background:#e5e5e5}.bar.done{background:var(--green-600)}
h1{margin:0;text-align:center;color:var(--green-900);font-size:clamp(28px,8vw,38px);line-height:1.12;font-weight:850}.lead{text-align:center;font-size:clamp(17px,4.7vw,22px);line-height:1.48;margin:18px auto 32px;max-width:430px;color:#343a3e}
.material-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-bottom:28px}.material-card{min-height:218px;border:1.5px solid #dfe2df;border-radius:24px;background:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:16px 10px;box-shadow:0 2px 8px rgba(0,0,0,.02);cursor:pointer;transition:.2s ease;position:relative}.material-card.selected{border:2px solid var(--green-600);background:linear-gradient(145deg,#fff,#f2faef);box-shadow:var(--shadow);transform:translateY(-1px)}.material-card input{position:absolute;opacity:0}.material-art{height:105px;width:100%;display:grid;place-items:center;font-size:76px;line-height:1}.material-name{font-size:24px;font-weight:800;color:var(--green-900);margin-top:8px}.radio-dot{width:38px;height:38px;border-radius:50%;border:3px solid #b9bdbc;margin-top:15px;display:grid;place-items:center;color:#fff;font-size:24px;font-weight:900}.selected .radio-dot{background:var(--green-600);border-color:var(--green-600)}.selected .radio-dot::after{content:'✓'}
.info-card{position:relative;border-radius:34px;background:linear-gradient(100deg,#f3f8ee,#edf5e9);padding:24px 22px 24px 104px;min-height:132px;margin:30px 0 26px}.info-icon{position:absolute;left:25px;top:27px;width:62px;height:62px;border-radius:50%;background:#fff;display:grid;place-items:center;color:var(--green-900);box-shadow:0 5px 15px rgba(31,93,50,.07)}.info-icon svg{width:34px;height:34px;fill:none;stroke:currentColor;stroke-width:1.9}.info-card strong{display:block;color:#143f33;font-size:22px;margin-bottom:5px}.info-card p{margin:0;font-size:17px;line-height:1.48;color:#263b36}
.actions{display:grid;gap:15px}.btn{border-radius:22px;min-height:74px;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:24px;border:2px solid var(--green-600);cursor:pointer}.btn-primary{background:linear-gradient(90deg,#3c9145,#4ba04f);color:#fff;position:relative}.btn-primary span{position:absolute;right:26px;font-size:38px;font-weight:300}.btn-secondary{background:#fff;color:var(--green-700)}
.bottom-nav{position:fixed;left:50%;bottom:0;transform:translateX(-50%);width:min(100%,540px);height:104px;padding:10px 12px calc(8px + env(safe-area-inset-bottom));border-radius:36px 36px 0 0;background:rgba(255,255,255,.98);box-shadow:0 -7px 28px rgba(33,66,49,.12);display:grid;grid-template-columns:repeat(5,1fr);z-index:20}.nav-item{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;font-size:12px;color:#596b76;font-weight:550;min-width:0}.nav-icon-wrap{width:46px;height:46px;border-radius:50%;display:grid;place-items:center}.nav-item svg{width:28px;height:28px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.nav-item.active{color:#19743d;font-weight:750}.nav-item.active .nav-icon-wrap{background:#edf8e8;box-shadow:0 0 0 9px rgba(109,179,70,.09)}
.placeholder{min-height:70vh;display:grid;place-items:center;text-align:center;padding:30px}.placeholder-card{padding:34px 24px;border-radius:30px;background:var(--green-100);max-width:410px}.placeholder-card h1{font-size:31px}.placeholder-card p{font-size:18px;line-height:1.5;color:var(--muted)}
.hero-home{text-align:center;padding-top:10px}.brand-mark{width:170px;height:170px;border-radius:50%;margin:0 auto 10px;background:linear-gradient(145deg,#317f4d,#87c54b);display:grid;place-items:center;color:#fff;font-size:84px}.brand-title{font-size:54px;font-weight:850;color:var(--green-900);line-height:1}.brand-title span{color:#78bd43}.brand-sub{font-size:25px;letter-spacing:.03em}.home-copy{font-size:20px;line-height:1.5;margin:30px auto;max-width:420px}.home-visual{font-size:98px;margin:16px 0 28px}.home-features{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin:20px 0 28px}.home-feature{padding:16px 8px;border-radius:18px;background:#f5faf2;font-size:14px;font-weight:700;color:#28483c}
@media(min-width:430px){.page-content{padding-left:32px;padding-right:32px}.material-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.material-card{min-height:220px}.material-art{font-size:66px}.material-name{font-size:20px}.nav-item{font-size:13px}}
@media(max-width:350px){.page-content{padding-left:14px;padding-right:14px}.material-grid{gap:10px}.material-card{min-height:190px}.material-art{font-size:60px}.material-name{font-size:20px}.info-card{padding-left:82px}.info-icon{left:16px;width:52px;height:52px}.btn{font-size:21px}}

/* Vista de materiales: composición compacta, sin desplazamiento vertical. */
body.materials-view{height:100svh;min-height:0;overflow:hidden}
.materials-view .mobile-shell{height:100svh;min-height:0;overflow:hidden}
.materials-view .page-content{
  height:calc(100svh - 64px);
  min-height:0;
  padding:clamp(10px,2svh,18px) 14px calc(74px + env(safe-area-inset-bottom));
  overflow:hidden;
}
.materials-view .progress{margin:0 14px clamp(7px,1.4svh,12px)}
.materials-view .step{width:30px;height:30px;font-size:14px;border-width:2px}
.materials-view .bar{height:3px}
.materials-view h1{font-size:clamp(20px,6vw,27px);line-height:1.08}
.materials-view .lead{font-size:clamp(12px,3.5vw,15px);line-height:1.3;margin:5px auto clamp(7px,1.3svh,11px)}
.materials-view .material-grid{
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:clamp(6px,1.2svh,10px);
  margin-bottom:clamp(7px,1.3svh,11px);
}
.materials-view .material-card{
  min-height:clamp(82px,14svh,112px);
  border-radius:15px;
  padding:5px 3px;
}
.materials-view .material-art{height:auto;font-size:clamp(31px,7svh,48px)}
.materials-view .material-name{font-size:clamp(12px,3.4vw,16px);margin-top:3px}
.materials-view .radio-dot{width:20px;height:20px;border-width:2px;margin-top:4px;font-size:13px}
.materials-view .info-card{
  min-height:0;
  margin:0 0 clamp(7px,1.3svh,11px);
  border-radius:18px;
  padding:9px 10px 9px 52px;
}
.materials-view .info-icon{left:10px;top:50%;transform:translateY(-50%);width:34px;height:34px}
.materials-view .info-icon svg{width:20px;height:20px}
.materials-view .info-card strong{font-size:clamp(13px,3.6vw,16px);margin-bottom:1px}
.materials-view .info-card p{font-size:clamp(10px,2.9vw,13px);line-height:1.2}
.materials-view .actions{grid-template-columns:1fr 1fr;gap:8px}
.materials-view .btn{min-height:42px;border-radius:13px;font-size:clamp(14px,3.8vw,17px)}
.materials-view .btn-primary span{right:12px;font-size:22px}
.materials-view .bottom-nav{
  height:66px;
  padding:5px 7px calc(4px + env(safe-area-inset-bottom));
  border-radius:22px 22px 0 0;
}
.materials-view .nav-item{gap:1px;font-size:9px}
.materials-view .nav-icon-wrap{width:31px;height:31px}
.materials-view .nav-item svg{width:20px;height:20px}
.materials-view .nav-item.active .nav-icon-wrap{box-shadow:0 0 0 5px rgba(109,179,70,.09)}

@media(max-height:600px){
  .materials-view .info-card p{display:none}
  .materials-view .material-card{min-height:76px}
  .materials-view .material-art{font-size:30px}
  .materials-view .radio-dot{width:17px;height:17px;margin-top:2px}
}

/* Menú hamburguesa móvil. */
.app-header{height:64px;padding:10px 14px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid #e6ece6;background:#fff;position:relative;z-index:30}
.app-header-title{font-size:20px;font-weight:850;color:var(--green-900)}
.menu-toggle{position:relative;width:44px;height:44px;padding:10px;border:1px solid #dce8dc;border-radius:14px;background:#fff;box-shadow:0 4px 14px rgba(25,73,44,.1);display:flex;flex-direction:column;justify-content:center;gap:5px;z-index:42;cursor:pointer}
.menu-toggle span{display:block;width:100%;height:2px;border-radius:2px;background:var(--green-900);transition:transform .2s ease,opacity .2s ease}
.menu-open .menu-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.menu-open .menu-toggle span:nth-child(2){opacity:0}
.menu-open .menu-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.menu-backdrop{position:fixed;inset:0;background:rgba(15,35,29,.38);opacity:0;visibility:hidden;transition:.22s ease;z-index:39}
.mobile-menu{position:fixed;top:0;right:max(0px,calc((100vw - 540px)/2));width:min(82vw,330px);height:100svh;padding:max(18px,env(safe-area-inset-top)) 18px max(18px,env(safe-area-inset-bottom));background:#fff;box-shadow:-12px 0 34px rgba(21,53,39,.18);transform:translateX(105%);visibility:hidden;transition:transform .24s ease,visibility .24s;z-index:41}
.menu-open .menu-backdrop{opacity:1;visibility:visible}
.menu-open .mobile-menu{transform:translateX(0);visibility:visible}
.mobile-menu-head{display:flex;align-items:center;justify-content:space-between;padding:2px 2px 16px;border-bottom:1px solid var(--line)}
.mobile-menu-head strong{font-size:24px;color:var(--green-900)}
.menu-close{width:38px;height:38px;border:0;border-radius:50%;background:var(--green-100);color:var(--green-900);font-size:28px;line-height:1;cursor:pointer}
.mobile-menu-links{display:grid;gap:8px;padding-top:16px}
.mobile-menu-link{min-height:52px;padding:0 14px;border-radius:15px;display:flex;align-items:center;gap:13px;color:#40534d;font-size:17px;font-weight:700}
.mobile-menu-link > span{width:30px;height:30px;border-radius:9px;background:#f2f7f0;display:grid;place-items:center;color:var(--green-700);font-size:20px}
.mobile-menu-link.active{background:var(--green-100);color:var(--green-900)}
.mobile-menu-link.active > span{background:var(--green-600);color:#fff}
.menu-open{overflow:hidden}

@media(max-width:540px){.mobile-menu{right:0}}