:root{
  --teal:#0F766E; --teal-dark:#115E59; --teal-deep:#0B3532; --teal-bright:#0D9488;
  --amber:#F59E0B; --amber-dark:#B45309; --ink:#1F2937;
  --muted:#64748B; --line:#DFE9E4; --bg:#F2F7F4; --bgsoft:#E9F5F0; --radius:16px;
  --shadow:0 1px 3px rgba(11,53,50,.05),0 12px 32px -16px rgba(11,53,50,.18);
  --shadow-hover:0 4px 10px rgba(11,53,50,.07),0 22px 44px -18px rgba(15,118,110,.38);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.6;font-size:17px}
::selection{background:#99F6E4}
a{color:var(--teal-dark)}

/* Header */
.site-header{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:.5rem 1rem;
  padding:.75rem 1.2rem;border-bottom:1px solid var(--line);position:sticky;top:0;background:rgba(255,255,255,.96);
  box-shadow:0 1px 12px rgba(11,53,50,.05);z-index:10}
.logo{font-size:1.4rem;font-weight:800;color:var(--teal-deep);text-decoration:none;letter-spacing:-.02em}
.logo span{color:var(--teal)}
.site-header nav a{color:var(--muted);text-decoration:none;margin-left:.4rem;font-size:.95rem;font-weight:600;
  padding:.35rem .7rem;border-radius:999px;transition:background .15s ease,color .15s ease}
.site-header nav a:hover{color:var(--teal-dark);background:var(--bgsoft)}

/* Layout & type */
main{max-width:880px;margin:0 auto;padding:1.4rem 1.1rem 2.5rem}
h1{font-size:1.85rem;line-height:1.22;margin:.4rem 0 .6rem;letter-spacing:-.02em;color:var(--teal-deep)}
h2{font-size:1.38rem;margin:1.9rem 0 .7rem;letter-spacing:-.01em;color:var(--teal-deep);
  display:flex;align-items:center;gap:.6rem}
h2::before{content:"";width:5px;height:1.25em;border-radius:99px;flex:0 0 auto;
  background:linear-gradient(180deg,var(--teal-bright),var(--teal-dark))}
.intro{color:#3D4A44;font-size:1.05rem}

/* Hero (portada) */
.hero{background:linear-gradient(135deg,var(--teal-deep) 0%,var(--teal) 58%,var(--teal-bright) 125%);
  border-radius:22px;padding:2.5rem 2.2rem 2.3rem;margin:.4rem 0 1.6rem;color:#fff;
  box-shadow:0 24px 48px -20px rgba(11,53,50,.45);text-align:left}
.hero h1{color:#fff;font-size:2.15rem;margin:.7rem 0 .6rem}
.hero h2::before{display:none}
.hero .intro{color:#D9F2EB;font-size:1.08rem;max-width:640px}
.hero-badge{display:inline-block;background:rgba(255,255,255,.15);border:1px solid rgba(255,255,255,.35);
  padding:.32rem .85rem;border-radius:999px;font-size:.83rem;font-weight:700;letter-spacing:.01em}
.search-box{margin-top:1.3rem}
.search-box input{width:100%;padding:.95rem 1.1rem;font-size:1.05rem;border:none;
  border-radius:13px;outline:none;background:#fff;color:var(--ink);
  box-shadow:0 10px 26px -10px rgba(0,0,0,.35)}
.search-box input:focus{box-shadow:0 0 0 4px rgba(153,246,228,.45),0 10px 26px -10px rgba(0,0,0,.35)}
@media(max-width:560px){.hero{padding:1.7rem 1.2rem 1.6rem}.hero h1{font-size:1.65rem}}

/* Tool tiles */
.tiles{display:grid;grid-template-columns:repeat(auto-fill,minmax(258px,1fr));gap:15px;margin:1rem 0}
.tile{display:flex;gap:14px;align-items:flex-start;border:1px solid var(--line);border-radius:var(--radius);
  padding:18px;text-decoration:none;color:var(--ink);background:#fff;box-shadow:var(--shadow);
  transition:transform .15s ease,box-shadow .15s ease}
.tile:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.tile .icon{font-size:1.55rem;background:var(--bgsoft);border-radius:12px;width:52px;height:52px;
  display:flex;align-items:center;justify-content:center;flex-shrink:0}
.tile .tile-text{min-width:0}
.tile strong{display:block;color:var(--teal-deep);font-size:1.03rem;line-height:1.3;margin-bottom:2px}
.tile span{color:var(--muted);font-size:.9rem;line-height:1.45;display:block}
.tile .icon{display:flex}
.tile .tile-text span{display:block}

/* Homepage top list */
.top-list{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);
  padding:.4rem 1.3rem;list-style:none;margin:1rem 0}
.top-list li{padding:.65rem 0;border-bottom:1px dashed var(--line)}
.top-list li:last-child{border-bottom:none}
.top-list a{font-weight:700;text-decoration:none}
.top-list a:hover{text-decoration:underline}

/* Calculator card */
.tool-card{border:1px solid var(--line);border-radius:18px;padding:1.5rem;background:#fff;
  margin:1.1rem 0;box-shadow:var(--shadow)}
.field{margin-bottom:.95rem}
.field label{display:block;font-weight:600;margin-bottom:.32rem;font-size:.97rem}
.field input[type=number],.field input[type=date],.field select{width:100%;padding:.7rem .85rem;
  font-size:16px;min-height:48px;border:1.5px solid #C7D2CB;border-radius:11px;background:#FBFDFC;color:var(--ink)}
.field input[type=number]:focus,.field input[type=date]:focus,.field select:focus{
  outline:none;border-color:var(--teal);background:#fff;box-shadow:0 0 0 3px rgba(15,118,110,.16)}
.field .hint{color:var(--muted);font-size:.85rem;margin-top:.22rem}
.check{display:flex;align-items:center;gap:.5rem;font-weight:600}
.check input{width:1.15rem;height:1.15rem;accent-color:var(--teal)}
.calc-btn{width:100%;padding:.95rem;font-size:1.15rem;font-weight:800;color:#fff;min-height:52px;
  background:linear-gradient(135deg,var(--teal-dark),var(--teal-bright));border:none;border-radius:12px;cursor:pointer;
  box-shadow:0 10px 22px -10px rgba(15,118,110,.6);transition:transform .12s ease,box-shadow .12s ease}
.calc-btn:hover{transform:translateY(-1px);box-shadow:0 14px 26px -10px rgba(15,118,110,.65)}

/* Result */
.result{border:1.5px solid var(--amber);border-radius:var(--radius);padding:1.25rem;margin:1.1rem 0;
  background:linear-gradient(160deg,#FFFBEB,#FEF3C7);box-shadow:var(--shadow)}
.result h2{margin-top:0;color:#7C4A03}
.result h2::before{background:linear-gradient(180deg,#FBBF24,var(--amber))}
.badge{background:var(--amber);color:#1F2937;font-size:.7rem;padding:.16rem .55rem;border-radius:999px;
  vertical-align:middle;text-transform:uppercase;letter-spacing:.03em;font-weight:700}
.line{display:flex;justify-content:space-between;gap:1rem;padding:.5rem 0;border-bottom:1px dashed #E7CF9A}
.line.total{border-bottom:none;border-top:2px solid var(--amber);font-size:1.18rem;margin-top:.35rem;
  font-weight:800;color:var(--amber-dark)}
.result .extra{margin-top:.6rem;font-size:.95rem}

/* Tables */
table{width:100%;border-collapse:collapse;margin:.8rem 0;font-size:.95rem}
th,td{border:1px solid var(--line);padding:.5rem .65rem;text-align:right}
th:first-child,td:first-child{text-align:left}
th{background:var(--bgsoft);color:var(--teal-deep)}
.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:.8rem 0}
.table-wrap table{margin:0;min-width:520px}

/* Content & FAQ */
.como{overflow-x:auto}
.como p,.como li{color:#2E3A35}
.faq details{background:#fff;border:1px solid var(--line);border-radius:12px;
  padding:.85rem 1.15rem;margin-bottom:.65rem;box-shadow:0 1px 4px rgba(11,53,50,.05)}
.faq summary{font-weight:700;cursor:pointer;color:var(--teal-deep)}
.faq details p{margin:.55rem 0 .2rem;color:#3D4A44}
.related ul{padding-left:1.2rem}
.related a{color:var(--teal-dark)}
.note{background:#FFFBEB;border:1px solid #FDE68A;border-left:4px solid var(--amber);
  border-radius:10px;padding:.75rem 1rem;font-size:.93rem}
.error{background:#FEF2F2;border:1.5px solid #DC2626;color:#991B1B;border-radius:11px;
  padding:.8rem 1rem;margin:.8rem 0;font-weight:600}
.copy-btn{margin-top:.9rem;width:100%;padding:.85rem;font-size:1rem;font-weight:700;color:var(--teal-dark);
  background:#fff;border:2px solid var(--teal);border-radius:12px;cursor:pointer;min-height:48px}
.copy-btn:hover{background:var(--bgsoft)}
.btn-sec{width:100%;padding:.8rem;font-size:1rem;font-weight:700;color:var(--teal-dark);background:#fff;
  border:2px solid var(--teal);border-radius:12px;cursor:pointer;min-height:48px;margin-top:.4rem}
.btn-sec:hover{background:var(--bgsoft)}

/* Footer */
.site-footer{background:var(--teal-deep);color:#A9C6BF;padding:2.4rem 1.2rem 2rem;margin-top:3.2rem;
  text-align:center;font-size:.92rem}
.site-footer nav{margin-bottom:1rem}
.site-footer nav a{color:#E9F5F0;margin:0 .7rem;text-decoration:none;font-weight:600}
.site-footer nav a:hover{color:#fff;text-decoration:underline}
.site-footer p{max-width:760px;margin:.45rem auto}
@media(max-width:480px){th,td{padding:.35rem .4rem;font-size:.85rem}h1{font-size:1.55rem}
  .site-header nav a{margin-left:.1rem;padding:.3rem .45rem}}

/* ===== Componentes (Fase 3) ===== */
.field input[type=text],.field textarea{width:100%;padding:.7rem .85rem;font-size:16px;min-height:48px;
  border:1.5px solid #C7D2CB;border-radius:11px;background:#FBFDFC;font-family:inherit;color:var(--ink)}
.field input[type=text]:focus,.field textarea:focus{outline:none;border-color:var(--teal);background:#fff;
  box-shadow:0 0 0 3px rgba(15,118,110,.16)}
.field textarea{min-height:120px;line-height:1.5;resize:vertical}
input[type=range]{width:100%;min-height:48px;accent-color:var(--teal)}
input[type=file]{width:100%;font-size:1rem;padding:.6rem 0}
canvas.chart{width:100%;height:auto;display:block;background:#fff;border:1px solid var(--line);
  border-radius:12px;margin:.8rem 0}
.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(105px,1fr));gap:.65rem;margin:.8rem 0}
.stat{border:1px solid var(--line);border-radius:12px;padding:.7rem .5rem;text-align:center;background:#fff;
  box-shadow:0 1px 4px rgba(11,53,50,.05)}
.stat strong{display:block;font-size:1.3rem;color:var(--teal-dark)}
.stat span{font-size:.8rem;color:var(--muted)}
.bar-row{margin:.55rem 0}
.bar-row .bar-label{display:flex;justify-content:space-between;font-size:.88rem;margin-bottom:.2rem}
.bar-track{height:10px;background:#E2E8F0;border-radius:999px;overflow:hidden}
.bar-fill{height:100%;background:linear-gradient(90deg,var(--teal-dark),var(--teal-bright));border-radius:999px}
.gauge{position:relative;height:26px;border-radius:999px;overflow:hidden;display:flex;margin:1rem 0 .4rem;
  box-shadow:inset 0 1px 3px rgba(0,0,0,.15)}
.gauge div{height:100%}
.gauge .g-bajo{flex:185;background:#60A5FA}.gauge .g-normal{flex:65;background:#34D399}
.gauge .g-sobre{flex:50;background:#FBBF24}.gauge .g-obeso{flex:100;background:#F87171}
.gauge-marker{position:absolute;top:-2px;width:4px;height:30px;background:var(--ink);border-radius:2px;
  transform:translateX(-2px)}
.gauge-labels{display:flex;justify-content:space-between;font-size:.75rem;color:var(--muted);margin-bottom:.6rem}
.cal-wrap{overflow-x:auto;margin:.8rem 0}
.cal-grid{display:grid;grid-template-columns:repeat(7,minmax(34px,1fr));gap:3px;min-width:280px}
.cal-grid .cal-head{font-weight:700;text-align:center;font-size:.78rem;color:var(--muted);padding:.2rem 0}
.cal-cell{border:1px solid var(--line);border-radius:8px;min-height:40px;padding:.15rem .3rem;
  font-size:.82rem;background:#fff}
.cal-cell .cal-d{font-weight:700}
.cal-cell.fuera{opacity:.32}
.cal-cell.fur{background:#DBEAFE;border-color:#60A5FA}
.cal-cell.fertil{background:#FCE7F3;border-color:#F9A8D4}
.cal-cell.ovulacion{background:var(--amber);border-color:#D97706;color:#1F2937}
.cal-cell.periodo{background:#FEE2E2;border-color:#F87171}
.cal-legend{display:flex;flex-wrap:wrap;gap:.4rem;font-size:.8rem;margin:.4rem 0}
.cal-legend span{border:1px solid var(--line);border-radius:999px;padding:.12rem .55rem;background:#fff}
.mes-titulo{font-weight:700;margin:.7rem 0 .3rem;text-transform:capitalize}
.typing-text{font-size:1.12rem;line-height:1.75;background:#fff;border:1.5px solid #C7D2CB;
  border-radius:11px;padding:.9rem 1rem;white-space:pre-wrap;word-break:break-word}
.typing-text .ok{color:var(--teal-dark)}
.typing-text .bad{background:#FEE2E2;color:#991B1B}
.typing-text .current{border-bottom:3px solid var(--amber)}
canvas.wheel{width:100%;max-width:480px;height:auto;display:block;margin:.6rem auto;background:#fff}
.dyn-row{display:flex;gap:.5rem;margin-bottom:.5rem}
.dyn-row input{flex:1;min-width:0;padding:.7rem .8rem;font-size:16px;min-height:48px;
  border:1.5px solid #C7D2CB;border-radius:11px;background:#fff}
.dyn-row input:focus{outline:none;border-color:var(--teal);box-shadow:0 0 0 3px rgba(15,118,110,.16)}
.dyn-row button{flex:0 0 48px;border:1.5px solid var(--line);background:#fff;border-radius:11px;
  font-size:1.1rem;cursor:pointer;min-height:48px}
.dyn-row button:hover{background:#FEF2F2}
.img-preview{max-width:100%;border-radius:12px;border:1px solid var(--line);margin:.6rem 0}
.winner{font-size:1.5rem;font-weight:800;text-align:center;color:var(--teal-dark);margin:.6rem 0}
select.modo{margin-bottom:.4rem}
.conv-card{border:1px solid var(--line);border-radius:12px;padding:.75rem .95rem;margin-bottom:.65rem;
  background:#fff;box-shadow:0 1px 4px rgba(11,53,50,.05)}
.conv-card strong{display:block;color:var(--teal-dark);margin-bottom:.2rem}
.conv-card p{margin:.2rem 0 .5rem;word-break:break-word}
.conv-card button{padding:.45rem .9rem;font-weight:700;color:var(--teal-dark);background:#fff;
  border:2px solid var(--teal);border-radius:10px;cursor:pointer;min-height:44px}
.conv-card button:hover{background:var(--bgsoft)}
.panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);
  padding:1.2rem 1.3rem;margin:1rem 0}

/* Breadcrumb (SEO pass) */
.breadcrumb{font-size:.9rem;color:#5B6B64;margin:.4rem 0 1rem}
.breadcrumb a{color:var(--teal-dark);text-decoration:none}
.breadcrumb a:hover{text-decoration:underline}