:root{
  --vino:#620000; --vino-800:#620000; --vino-50:#f8ecee;
  --dorado:#c40000; --gris:#6b7280; --fondo:#f5f5f7;
  --card:#ffffff; --borde:#e9e9ee; --ok:#10b981;
  --shadow: 0 10px 30px rgba(0,0,0,.08);
}

html,body{
  background:var(--fondo); color:#0f172a;
  font-family:system-ui,-apple-system,Segoe UI,Roboto,Inter,Arial,sans-serif;
}

.cotz-wrap{max-width:1200px;margin:auto;padding:48px 20px}

.cotz-header{
  display:grid;grid-template-columns:1.1fr 1fr;gap:36px;align-items:center;
}
.cotz-kicker{
  display:inline-block;padding:6px 14px;background:var(--vino);color:#fff;
  border-radius:999px;font-weight:600;font-size:14px;letter-spacing:.2px
}
.cotz-header .cotz-title{font-size:42px;margin:14px 0 8px;line-height:1.1}
.cotz-sub{color:var(--gris);max-width:54ch}

.cotz-benefits{margin:18px 0 0;padding:0;list-style:none}
.cotz-benefits li{display:flex;gap:10px;align-items:flex-start;margin:10px 0}
.cotz-dot{width:10px;height:10px;border-radius:999px;background:var(--vino);margin-top:8px}

.cotz-card{
  background:var(--card);border:1px solid var(--borde);box-shadow:var(--shadow);
  border-radius:28px;padding:28px;position:relative;overflow:hidden
}
.cotz-card::before{
  content:"";position:absolute;width:280px;height:280px;right:-120px;top:-120px;
  background:radial-gradient(closest-side, #ffe8c0 0%, transparent 70%);
  opacity:.5;filter:blur(2px);pointer-events:none;border-radius:50%;
}

.cotz-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.cotz-field{position:relative}
.cotz-label{font-size:13px;color:#374151;margin:2px 0 6px;display:block;font-weight:600}

.cotz-input, .cotz-select{
  width:100%;padding:14px 14px 14px 40px;border-radius:14px;border:1px solid var(--borde);
  background:#fff;outline:none;transition:border .2s, box-shadow .2s, transform .05s;
}
.cotz-input:focus, .cotz-select:focus{
  border-color:var(--vino);
  box-shadow:0 0 0 4px rgba(124,13,20,.18);
}
.cotz-icon{position:absolute;left:12px;top:35px;opacity:.7;pointer-events:none;font-size:18px}

.cotz-range-wrap{display:flex;align-items:center;gap:12px}
.cotz-card input[type="range"]{width:100%}

.cotz-note{font-size:12px;color:var(--gris)}
.cotz-switch{display:flex;align-items:center;gap:10px;user-select:none}
.cotz-switch input{display:none}
.cotz-slider{width:48px;height:26px;background:#e5e7eb;border-radius:999px;position:relative;transition:background .2s}
.cotz-slider::after{
  content:"";position:absolute;width:22px;height:22px;top:2px;left:2px;border-radius:999px;background:#fff;box-shadow:var(--shadow);
  transition:left .2s
}
.cotz-switch input:checked + .cotz-slider{background:var(--vino)}
.cotz-switch input:checked + .cotz-slider::after{left:24px}

.cotz-adv{margin-top:8px}

.cotz-adv-summary{
  display:flex; align-items:center; justify-content:space-between;
  gap:12px; padding:10px 12px; border:1px solid var(--borde); border-radius:12px;
  background:#fff; user-select:none; cursor:pointer;
}
.cotz-adv-summary::-webkit-details-marker{ display:none; }
.cotz-adv-summary::marker{ content:""; }

.cotz-adv-left{ display:flex; align-items:center; gap:10px; }
.cotz-adv-arrow{ width:18px; height:18px; display:block; transition: transform .25s ease; }
.cotz-adv[open] .cotz-adv-arrow{ transform: rotate(180deg); }


.cotz-adv[open] { padding-top:6px; }

.cotz-adv-grid{margin-top:8px}

.cotz-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:10px}
.cotz-btn{
  border:none;border-radius:999px;padding:14px 22px;font-weight:700;cursor:pointer;
  transition:transform .05s, box-shadow .2s;box-shadow:var(--shadow);letter-spacing:.2px
}
.cotz-btn:active{transform:translateY(1px)}
.cotz-btn-primary{background:linear-gradient(135deg, var(--vino) 0%, var(--dorado) 100%);color:#fff}
.cotz-btn-secondary{background:#fff;border:1px solid var(--borde);color:#111}

.cotz-btn-shine{
  position: relative;
  overflow: hidden;
  isolation: isolate; 
}

.cotz-btn-shine::before{
  content:"";
  position:absolute; inset:-2px; border-radius:inherit;
  padding:1px;
  background: linear-gradient(135deg, rgba(127,0,0,.45), rgba(207,0,0,.45));
  -webkit-mask-composite: xor; mask-composite: exclude;
  opacity:0;
  transition: opacity .25s ease;
}

.cotz-btn-shine::after{
  content:"";
  position:absolute; top:0; left:-40%;
  width:40%; height:100%;
  background: linear-gradient(120deg,
              rgba(255,255,255,0) 0%,
              rgba(255,255,255,.35) 50%,
              rgba(255,255,255,0) 100%);
  transform: skewX(-20deg);
  transition: left .7s ease;
}
.cotz-btn-shine:hover::after{ left:120%; }

@media (prefers-reduced-motion: reduce){
  .cotz-btn-shine, .cotz-btn-shine::before, .cotz-btn-shine::after{
    transition: none !important;
  }
  .cotz-btn-shine::after{ display:none; }
}

.is-hidden{ display:none !important; }

.cotz-result{
  margin-top: 18px;
  padding: 18px;
  border-radius: 20px;
  background:
    radial-gradient(1200px 400px at 100% 0%, rgba(255,228,196,.22), transparent 70%),
    #fff;
  border: 1px solid rgba(0,0,0,.06);
  box-shadow: 0 12px 28px rgba(0,0,0,.12);
  animation: cotz-fadeIn .25s ease-out forwards;
}
.cotz-result.show{ display:block; }

.cotz-result-head{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 10px;
  border-bottom: 1px dashed rgba(0,0,0,.12);
}

.cotz-total{
  font-size: 42px;
  font-weight: 900;
  color: var(--vino);
  line-height: 1;
}

.cotz-status{
  background: #eaf7ee;
  color: #11643a;
  padding: 8px 12px;
  border-radius: 999px;
  font-weight: 800;
  font-size: 14px;
  box-shadow: 0 1px 0 rgba(0,0,0,.04) inset;
}

.cotz-break{
  list-style: none;
  margin: 14px 0 6px 0;
  padding: 0;
  display: grid;
  gap: 10px;
  color: #374151;
}
.cotz-break li{
  display: flex;
  align-items: baseline;
  gap: 8px;
}
.cotz-break li::before{
  content: "";
  width: 8px; height: 8px;
  border-radius: 999px;
  background: var(--vino);
  box-shadow: 0 0 0 3px rgba(98,0,0,.12);
  margin-top: 6px;
}

.cotz-result-actions{
  margin-top: 10px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

@media (max-width: 767.98px){
  .cotz-total{ font-size: 34px; }
  .cotz-result{ padding: 16px; border-radius: 16px; }
}

.cotz-home-btn{
  position: fixed; left: 24px; bottom: calc(24px + env(safe-area-inset-bottom, 0));
  z-index: 60;
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 18px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--vino, #7c0d14) 0%, var(--dorado, #f0b04a) 100%);
  color: #fff; text-decoration: none; font-weight: 800; letter-spacing: .2px;
  box-shadow: 0 10px 28px rgba(124,13,20,.28);
  overflow: hidden; isolation: isolate; 
  transition: transform .08s ease, box-shadow .25s ease, opacity .25s ease;
}
.cotz-home-btn:hover{ box-shadow: 0 14px 36px rgba(124,13,20,.36); }
.cotz-home-btn:active{ transform: translateY(1px) scale(.99); }

.cotz-home-ico{
  width: 22px; height: 22px; display:block;
  filter: brightness(0) invert(1); 
}
.cotz-home-txt{ font-size: 15px; }

.cotz-home-btn::before{
  content:""; position:absolute; inset:-2px; border-radius: inherit;
  padding:1px;
  background: linear-gradient(135deg, rgba(124,13,20,.45), rgba(240,176,74,.45));
  -webkit-mask-composite: xor; mask-composite: exclude;
  opacity: .0; transition: opacity .25s ease;
}
.cotz-home-btn:hover::before{ opacity: .8; }

.cotz-home-btn::after{
  content:""; position:absolute; top:0; left:-40%;
  width: 40%; height: 100%;
  background: linear-gradient(120deg, rgba(255,255,255,0) 0%,
                                         rgba(255,255,255,.35) 50%,
                                         rgba(255,255,255,0) 100%);
  transform: skewX(-20deg);
  transition: left .7s ease;
}
.cotz-home-btn:hover::after{ left: 120%; }

@media (max-width: 640px){
  .cotz-home-txt{ display:none; }
  .cotz-home-btn{ padding: 14px; border-radius: 999px; }
}

@media (prefers-reduced-motion: reduce){
  .cotz-home-btn, .cotz-home-btn::after, .cotz-home-btn::before{
    transition: none !important;
  }
}

@media (max-width: 920px){
  .cotz-header{grid-template-columns:1fr;gap:24px}
  .cotz-grid{grid-template-columns:1fr}
}

@media print{
  body{background:#fff}
  nav,#topbar-container,.cotz-header > :first-child,
  .cotz-actions:not(.cotz-result-actions){display:none !important}
  .cotz-wrap{max-width:800px}
  .cotz-card{box-shadow:none;border:none}
}

@keyframes cotz-fadeIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}