@font-face{
  font-family:'Inter';
  src:url('fonts/Inter.woff2') format('woff2');
  font-weight:100 900;font-style:normal;font-display:swap;
}

:root{
  --ink:#111;
  --muted:#555;
  --bg:#fff;
  --soft:#f4f4f2;
  --line:#dcdcd8;
  --accent:#0b7bb5;      /* celeste/azul ztart3d (contraste AA sobre blanco) */
  --accent-soft:#e3f3fb;
  --wa:#0f7a3d;
  --r:14px;
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font:16px/1.45 'Inter',sans-serif;
}
button,input{font:inherit;color:inherit}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px}

/* ---------- encabezado ---------- */
.top{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:12px 16px;border-bottom:1px solid var(--line);background:#fff;
}
.brand{display:flex;align-items:center;gap:10px}
.logo{height:36px;width:auto;display:block}
.brand-name{font-weight:300;font-size:26px;letter-spacing:-.03em;line-height:1}
.brand-name b{font-weight:900}
.claim{margin:0;color:var(--muted);font-size:14px}

/* ---------- layout ---------- */
.layout{max-width:1080px;margin:0 auto}
.vista{
  position:sticky;top:0;z-index:10;background:#fff;
  padding:8px 12px 6px;border-bottom:1px solid var(--line);
}
.preview{background:var(--soft);border-radius:var(--r);padding:4px}
.preview svg{display:block;width:100%;height:auto;max-height:32vh}
.preview .tecla{cursor:pointer}
.nota{margin:6px 4px 0;font-size:12px;color:var(--muted);text-align:center}
.panel{padding:8px 16px 32px}

@media (min-width:900px){
  .layout{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);gap:24px;padding:24px 16px;align-items:start}
  .vista{top:16px;border:0;padding:0;background:transparent}
  .preview{padding:12px}
  .preview svg{max-height:72vh}
  .panel{padding:0}
}

/* ---------- pasos ---------- */
.paso{padding:20px 0;border-bottom:1px solid var(--line)}
.paso:last-child{border-bottom:0}
h2{font-size:18px;margin:0 0 12px;display:flex;align-items:center;gap:10px}
h2 small{font-weight:400;color:var(--muted);font-size:14px}
h3{font-size:16px;margin:16px 0 4px}
h4{font-size:13px;margin:16px 0 8px;color:var(--muted);text-transform:uppercase;letter-spacing:.04em}
.num{
  display:inline-grid;place-items:center;width:28px;height:28px;border-radius:50%;
  background:var(--ink);color:#fff;font-size:14px;font-weight:700;flex:none;
}
.ayuda{margin:0 0 10px;color:var(--muted);font-size:14px}

/* ---------- controles ---------- */
.seg{display:grid;grid-template-columns:repeat(6,1fr);gap:8px}
.seg button{
  min-height:52px;border:2px solid var(--ink);background:#fff;border-radius:12px;
  font-size:20px;font-weight:800;cursor:pointer;
}
.seg button[aria-pressed="true"]{background:var(--ink);color:#fff}

input[type=text]{
  width:100%;min-height:52px;padding:0 14px;border:2px solid var(--ink);border-radius:12px;
  font-size:20px;font-weight:800;letter-spacing:.12em;text-transform:uppercase;background:#fff;
}
input[type=text]::placeholder{font-weight:400;letter-spacing:0;text-transform:none;color:#767676}
.aviso{min-height:1.4em;margin:6px 2px 0;font-size:14px;color:#8a4b00}

.swatches{display:flex;flex-wrap:wrap;gap:10px 8px}
.sw{
  width:64px;display:flex;flex-direction:column;align-items:center;gap:6px;
  background:none;border:0;padding:4px 0;cursor:pointer;font-size:12px;line-height:1.15;text-align:center;
}
.sw .dot{
  width:44px;height:44px;border-radius:50%;display:block;
  box-shadow:inset 0 0 0 1px rgba(0,0,0,.25);
}
.sw[aria-pressed="true"] .dot{box-shadow:inset 0 0 0 1px rgba(0,0,0,.25),0 0 0 3px #fff,0 0 0 5px var(--ink)}
.sw[aria-pressed="true"]{font-weight:700}

.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{
  width:52px;height:52px;border-radius:12px;border:2px solid var(--line);
  display:grid;place-items:center;cursor:pointer;background:#fff;padding:0;
  font-family:'Inter',sans-serif;font-weight:900;font-size:22px;
  box-shadow:inset 0 0 0 1px rgba(0,0,0,.2);
}
.chip svg{width:24px;height:24px;display:block}
.chip[aria-pressed="true"]{border-color:var(--ink);outline:2px solid var(--ink);outline-offset:2px}

.tecla-ed{background:var(--soft);border-radius:var(--r);padding:4px 14px 16px;margin-top:14px}
.grid-cont{display:grid;grid-template-columns:repeat(auto-fill,minmax(44px,1fr));gap:6px}
.grid-cont button{
  min-height:44px;border:2px solid var(--line);background:#fff;border-radius:10px;cursor:pointer;
  font-family:'Inter',sans-serif;font-weight:900;font-size:18px;display:grid;place-items:center;padding:0;
}
.grid-cont button svg{width:22px;height:22px;display:block}
.grid-cont button[aria-pressed="true"]{background:var(--ink);color:#fff;border-color:var(--ink)}

.btn{
  display:flex;align-items:center;justify-content:center;gap:8px;width:100%;
  min-height:52px;padding:0 18px;border-radius:12px;border:2px solid var(--ink);
  font-weight:700;font-size:16px;cursor:pointer;text-decoration:none;text-align:center;
}
.btn.sec{background:#fff;color:var(--ink)}
.btn.sec:hover{background:var(--soft)}
.tecla-ed .btn{margin-top:18px}
.btn.wa{background:var(--wa);border-color:var(--wa);color:#fff;font-size:18px;margin-top:6px}
.btn.wa:hover{filter:brightness(1.08)}
.fila{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:10px}
@media (max-width:420px){.fila{grid-template-columns:1fr}}

/* ---------- resumen ---------- */
.res{list-style:none;margin:0 0 8px;padding:0;font-size:15px}
.res li{padding:6px 0;border-bottom:1px dashed var(--line)}
.res li:last-child{border-bottom:0}
.total{display:flex;justify-content:space-between;align-items:baseline;margin:10px 0 16px;font-size:18px}
.total strong{font-size:30px;letter-spacing:-.02em}

.pie{text-align:center;color:var(--muted);font-size:13px;padding:16px 16px 28px}
.toast{
  position:fixed;left:50%;bottom:24px;transform:translate(-50%,20px);opacity:0;pointer-events:none;
  background:var(--ink);color:#fff;padding:12px 18px;border-radius:999px;font-size:14px;
  transition:opacity .2s,transform .2s;z-index:50;max-width:90vw;text-align:center;
}
.toast.on{opacity:1;transform:translate(-50%,0)}
.error{margin:24px 16px;padding:16px;border:2px solid #b00020;border-radius:12px;color:#b00020}