:root{font-family:Arial,Helvetica,sans-serif;background:#fff;color:#000}*{box-sizing:border-box}body{margin:0;background:#fff;color:#000}header{min-height:54px;display:grid;grid-template-columns:1fr auto auto;gap:24px;align-items:center;padding:10px 20px;background:#fff;border-bottom:1px solid #000}header nav{display:flex;gap:16px;flex-wrap:wrap}a{color:#000;text-decoration:underline}main{padding:20px;max-width:1600px;margin:auto}h1,h2,h3{font-weight:600}.cards,.stages{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:8px}.cards article,.stages a,.panel{background:#fff;border:1px solid #000;padding:14px;border-radius:0}.cards span,.stages small{display:block;color:#333;font-size:12px}.cards strong{font-size:28px}.stages a span{display:block;color:#000;font-weight:700}.tablewrap{overflow:auto;border:1px solid #000}table{border-collapse:collapse;width:100%;font-size:13px;background:#fff}th,td{padding:7px 8px;border:1px solid #000;text-align:left;vertical-align:top}th{background:#fff;font-weight:700}.login{max-width:420px;margin:12vh auto;background:#fff;padding:24px;border:1px solid #000}.login label,label{display:block;margin:12px 0}.login input,input[type=text],input[type=number],input[type=password],input[type=file]{width:100%;padding:8px;margin-top:5px;background:#fff;color:#000;border:1px solid #000;border-radius:0}button{padding:8px 14px;background:#fff;color:#000;border:1px solid #000;border-radius:0;cursor:pointer}button:hover{background:#eee}.alert,.notice{border:2px solid #000;padding:10px;margin:10px 0;background:#fff}.inline,.confirm{display:flex;gap:8px;align-items:end;flex-wrap:wrap}.confirm label{min-width:180px;margin:0}.panel{margin:0 0 16px 0}dl{display:grid;grid-template-columns:max-content 1fr;gap:6px 16px}dt{font-weight:700}dd{margin:0}code{border:1px solid #000;padding:2px 4px;background:#fff}

/* ETAPA 03 - Control de Escaneo - estilos aislados */
.stage3-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin:14px 0}
.stage3-card{border:1px solid #bbb;padding:12px;background:#fff}
.stage3-card b{display:block;font-size:1.15rem;margin-top:4px}
.stage3-section{border:1px solid #aaa;padding:16px;margin:16px 0;background:#fff}
.stage3-section h2{margin-top:0}
.stage3-form{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;align-items:end}
.stage3-form label{display:flex;flex-direction:column;gap:4px}
.stage3-form .wide{grid-column:span 2}.stage3-form .full{grid-column:1/-1}
.stage3-form input,.stage3-form select,.stage3-form textarea,.stage3-form button{padding:8px;font:inherit}
.stage3-ok{border:1px solid #222;padding:10px}.stage3-err{border:2px solid #000;padding:10px;font-weight:700}
@media(max-width:900px){.stage3-grid,.stage3-form{grid-template-columns:1fr 1fr}}
@media(max-width:600px){.stage3-grid,.stage3-form{grid-template-columns:1fr}.stage3-form .wide{grid-column:auto}}

/* ETAPA 03 - Importacion historica y ajuste operativo */
.stage3-start-form{grid-template-columns:minmax(220px,1fr) minmax(220px,1fr)}
.stage3-checks{grid-column:1/-1;display:flex;gap:18px;flex-wrap:wrap;align-items:center;padding:8px 0}
.stage3-checks label{display:flex;flex-direction:row;align-items:center;gap:6px}
.stage3-actions{grid-column:1/-1;display:flex;justify-content:flex-start;align-items:center}
.stage3-actions button{width:auto;min-width:180px}
.stage3-import h3{margin-top:20px}
.stage3-import-select{grid-template-columns:minmax(220px,1fr) minmax(180px,.5fr)}
.stage3-map-form{grid-template-columns:repeat(3,minmax(220px,1fr))}
.stage3-import-summary{margin-top:12px}
.stage3-confirm-historical{margin-top:16px;display:grid;gap:10px}
.stage3-inline-form{margin-top:12px}
.stage3-inline-form button{width:auto}
@media(max-width:900px){.stage3-start-form,.stage3-import-select,.stage3-map-form{grid-template-columns:1fr 1fr}}
@media(max-width:600px){.stage3-start-form,.stage3-import-select,.stage3-map-form{grid-template-columns:1fr}}