:root{
    --cream:#F7F4EC;
    --paper:#FFFDF8;
    --navy:#16324F;
    --navy-dark:#0F2337;
    --gold:#C89B3C;
    --gold-soft:#E7D4A3;
    --sage:#8B8F73;
    --sage-soft:#EDEEE4;
    --ink:#2A2A26;
    --ink-soft:#5B5B54;
    --line:#DCD6C4;
    --ok:#3F7A5D;
    --ok-soft:#E4EEE7;
    --warn:#B23B3B;
    --warn-soft:#F5E4E1;
    --radius:4px;
  }
  *{box-sizing:border-box;}
  html,body{margin:0;padding:0;}
  body{
    background:var(--cream);
    color:var(--ink);
    font-family:'Work Sans', sans-serif;
    font-size:15px;
    line-height:1.5;
    -webkit-font-smoothing:antialiased;
  }
  h1,h2,h3{
    font-family:'Fraunces', serif;
    color:var(--navy);
    margin:0 0 6px 0;
    letter-spacing:-0.01em;
  }
  .app{max-width:760px;margin:0 auto;padding:0 0 80px 0;}

  /* ---------- Top bar / brand ---------- */
  .brand-bar{
    background:var(--navy);
    color:var(--paper);
    padding:22px 24px 26px 24px;
    display:flex;
    align-items:center;
    gap:16px;
  }
  .brand-mark{
    width:46px;height:46px;flex:0 0 auto;
    border-radius:50%;
    background:var(--paper);
    display:flex;align-items:center;justify-content:center;
  }
  .brand-mark svg{width:28px;height:28px;}
  .brand-text .eyebrow{
    font-size:11px;
    color:var(--gold-soft);
    margin:0 0 2px 0;
  }
  .brand-text h1{
    color:var(--paper);
    font-size:19px;
    font-weight:600;
    margin:0;
  }

  /* ---------- Tabs ---------- */
  .tabs{
    display:flex;
    border-bottom:1px solid var(--line);
    background:var(--paper);
    position:sticky; top:0; z-index:20;
  }
  .tab{
    flex:1;
    text-align:center;
    padding:14px 8px;
    font-size:13.5px;
    font-weight:600;
    color:var(--ink-soft);
    cursor:pointer;
    border-bottom:3px solid transparent;
    user-select:none;
  }
  .tab.active{color:var(--navy);border-bottom-color:var(--gold);}

  .view{display:none;padding:22px 20px 0 20px;}
  .view.active{display:block;}

  /* ---------- Instruction blocks ---------- */
  .step-block{
    background:var(--sage-soft);
    border-left:4px solid var(--sage);
    border-radius:var(--radius);
    padding:16px 18px;
    margin-bottom:16px;
  }
  .step-block strong{display:block;color:var(--navy);margin-bottom:4px;font-size:14px;}
  .step-block p{margin:0;font-size:13.5px;color:var(--ink-soft);}
  .fase-pill{
    display:inline-block;
    margin-top:8px;
    background:var(--gold);
    color:var(--navy-dark);
    font-weight:700;
    font-size:13px;
    padding:4px 12px;
    border-radius:20px;
  }

  /* ---------- Form fields ---------- */
  .field{margin-bottom:16px;}
  .field label{
    display:block;
    font-size:13.5px;
    font-weight:600;
    color:var(--navy);
    margin-bottom:6px;
  }
  .field label .req{color:var(--warn);margin-left:2px;}
  .field .hint{font-size:12px;color:var(--ink-soft);margin-top:5px;}
  input[type=text], input[type=email], input[type=tel], input[type=number], input[type=date]{
    width:100%;
    padding:12px 13px;
    font-size:15.5px;
    font-family:inherit;
    border:1.5px solid var(--line);
    border-radius:var(--radius);
    background:var(--paper);
    color:var(--ink);
  }
  input:focus{outline:2px solid var(--navy);outline-offset:1px;border-color:var(--navy);}
  .row2{display:grid;grid-template-columns:1fr 1fr;gap:12px;}
  .qty-row{display:flex;align-items:center;justify-content:space-between;gap:14px;background:var(--paper);border:1.5px solid var(--line);border-radius:var(--radius);padding:12px 14px;}
  .qty-row .qty-label strong{display:block;font-size:14px;color:var(--navy);}
  .qty-row .qty-label span{font-size:12.5px;color:var(--ink-soft);}
  .qty-row input[type=number]{width:74px;text-align:center;padding:9px 6px;}
  .radio-group{display:flex;gap:18px;margin-top:4px;}
  .radio-group label{display:flex;align-items:center;gap:6px;font-weight:500;font-size:14px;color:var(--ink);}

  .divider{border:none;border-top:1px solid var(--line);margin:24px 0;}

  /* ---------- Dynamic asistente cards ---------- */
  .asistente-card{
    border:1.5px solid var(--line);
    border-radius:var(--radius);
    padding:14px 16px;
    margin-bottom:12px;
    background:var(--paper);
  }
  .num{
    display:inline-flex;align-items:center;justify-content:center;
    width:22px;height:22px;border-radius:50%;
    background:var(--navy);color:var(--paper);
    font-size:12px;font-weight:700;margin-right:8px;
    flex:0 0 auto;
  }
  .asistente-card .title{display:flex;align-items:center;font-size:13.5px;font-weight:600;color:var(--navy);margin-bottom:10px;}

  .menor-card{
    border:1.5px dashed var(--sage);
    border-radius:var(--radius);
    padding:14px 16px;
    margin-bottom:12px;
    background:var(--sage-soft);
  }
  .menor-card .title{display:flex;align-items:center;font-size:13.5px;font-weight:700;color:var(--navy);margin-bottom:10px;}

  /* ---------- Total table ---------- */
  .total-box{border:1.5px solid var(--line);border-radius:var(--radius);overflow:hidden;margin-bottom:6px;}
  .total-box table{width:100%;border-collapse:collapse;font-size:13.5px;}
  .total-box th{background:var(--navy);color:var(--paper);text-align:left;padding:8px 12px;font-weight:600;}
  .total-box td{padding:8px 12px;border-top:1px solid var(--line);}
  .total-box tr.grand td{font-weight:700;color:var(--navy);font-size:15px;border-top:2px solid var(--navy);}
  .total-note{font-size:12px;color:var(--ink-soft);margin:6px 0 20px 0;}

  /* ---------- Upload ---------- */
  .upload-box{
    border:2px dashed var(--line);
    border-radius:var(--radius);
    padding:26px 16px;
    text-align:center;
    background:var(--paper);
  }
  .upload-actions{display:flex;gap:10px;justify-content:center;margin-top:12px;flex-wrap:wrap;}
  .btn-secondary{
    background:var(--paper);border:1.5px solid var(--navy);color:var(--navy);
    padding:10px 16px;border-radius:var(--radius);font-weight:600;font-size:13.5px;cursor:pointer;
  }

  /* ---------- Email confirm error ---------- */
  .email-mismatch{color:var(--warn);font-size:12.5px;margin-top:5px;display:none;}
  .email-ok{color:var(--ok);font-size:12.5px;margin-top:5px;display:none;}

  .toggle-row{
    display:flex;align-items:center;justify-content:space-between;
    background:var(--paper);border:1.5px solid var(--line);border-radius:var(--radius);
    padding:12px 14px;margin-bottom:16px;
  }
  .toggle-row span{font-size:13px;color:var(--ink-soft);}
  .switch{position:relative;width:42px;height:24px;flex:0 0 auto;}
  .switch input{opacity:0;width:0;height:0;}
  .slider{position:absolute;inset:0;background:var(--line);border-radius:24px;cursor:pointer;transition:.15s;}
  .slider:before{content:"";position:absolute;width:18px;height:18px;left:3px;top:3px;background:var(--paper);border-radius:50%;transition:.15s;}
  input:checked + .slider{background:var(--navy);}
  input:checked + .slider:before{transform:translateX(18px);}

  .btn-submit{
    width:100%;
    background:var(--navy);
    color:var(--paper);
    border:none;
    padding:16px;
    border-radius:var(--radius);
    font-size:16px;
    font-weight:600;
    font-family:'Fraunces',serif;
    cursor:pointer;
    margin-top:6px;
  }
  .btn-submit:active{background:var(--navy-dark);}

  /* ================= BOLETOS ================= */
  .sheet-label{
    font-size:12.5px;
    font-weight:700;
    color:var(--ink-soft);
    text-transform:none;
    margin:26px 0 10px 0;
    padding-bottom:6px;
    border-bottom:1px solid var(--line);
  }
  .sheet-label:first-of-type{margin-top:6px;}

  .ticket-sheet{
    background:#EDEAE0;
    border-radius:var(--radius);
    padding:14px;
    margin-bottom:10px;
  }
  .ticket{
    background:var(--paper);
    border-radius:6px;
    display:flex;
    overflow:hidden;
    box-shadow:0 1px 3px rgba(0,0,0,.12);
    margin-bottom:12px;
    position:relative;
  }
  .ticket:last-child{margin-bottom:0;}
  .ticket .stub{
    width:36%;
    background:var(--navy);
    color:var(--paper);
    padding:12px 10px;
    display:flex;
    flex-direction:column;
    align-items:center;
    justify-content:center;
    text-align:center;
    gap:6px;
    position:relative;
  }
  .ticket .stub .logo-congreso{
    position:absolute;
    top:8px;
    left:8px;
    width:24px;height:24px;border-radius:50%;
    background:var(--paper);
    display:flex;align-items:center;justify-content:center;
    margin:0;
  }
  .ticket .stub .logo-congreso svg{width:15px;height:15px;}
  .ticket .stub .qr{
    width:58px;height:58px;background:var(--paper);border-radius:3px;
    display:flex;align-items:center;justify-content:center;
  }
  .ticket .stub .qr svg{width:47px;height:47px;}
  .ticket .stub .folio{font-size:7.5px;letter-spacing:.02em;color:var(--gold-soft);opacity:.85;}
  .ticket .perforation{
    width:0;border-left:2px dashed var(--line);
  }
  .ticket .info{
    flex:1;
    padding:14px 16px;
    position:relative;
  }
  .ticket .info .evento{font-size:10.5px;color:var(--ink-soft);margin-bottom:1px;}
  .ticket .info .fecha-evento{font-size:10px;color:var(--gold);font-weight:600;margin-bottom:8px;}
  .ticket .info h3{font-size:16px;margin:0 0 8px 0;color:var(--navy);}
  .ticket .info .datos{font-size:12.5px;color:var(--ink);}
  .ticket .info .datos b{color:var(--navy);}
  .ticket .info .datos div{margin-bottom:2px;}
  .ticket .fase-stamp{
    position:absolute;top:10px;right:12px;
    background:var(--gold);color:var(--navy-dark);
    font-size:10.5px;font-weight:700;
    padding:3px 9px;border-radius:20px;
  }
  .ticket.infantil .stub{background:var(--sage);}
  .ticket.infantil .fase-stamp{background:var(--ok);color:var(--paper);}
  .ticket.paquete{min-height:150px;}
  .ticket.paquete .info{display:flex;flex-direction:column;justify-content:center;}
  .ticket.paquete .info h3{font-size:20px;}

  .page-note{
    display:flex;align-items:center;gap:8px;
    font-size:12px;color:var(--ink-soft);
    margin:-2px 0 14px 0;
  }
  .page-note .dot{width:7px;height:7px;border-radius:50%;background:var(--gold);}

  @media (max-width:480px){
    .ticket{flex-direction:column;}
    .ticket .stub{width:100%;flex-direction:row;justify-content:center;padding:12px;}
    .ticket .perforation{display:none;}
    .ticket .stub .qr{width:52px;height:52px;}
  }