:root{
    --bg:#080b14;
    --bg-2:#0c1120;
    --card:#111729;
    --card-border:#1f2a44;
    --text:#e9edf7;
    --text-dim:#9aa7c2;
    --text-faint:#6b7793;
    --blue:#2f7bf6;
    --blue-2:#38bdf8;
    --blue-glow:rgba(56,189,248,.35);
    --green:#34d399;
    --amber:#fbbf24;
    --red:#f87171;
    --radius:18px;
  }
  *{box-sizing:border-box;}
  html,body{margin:0;padding:0;}
  body{
    background:
      radial-gradient(1200px 600px at 50% -10%, #12224a 0%, transparent 60%),
      radial-gradient(900px 500px at 90% 10%, #0e1a35 0%, transparent 55%),
      var(--bg);
    color:var(--text);
    font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Inter,Roboto,Helvetica,Arial,sans-serif;
    min-height:100vh;
    line-height:1.5;
  }
  .wrap{max-width:760px;margin:0 auto;padding:24px 20px 80px;}
  a{color:var(--blue-2);}

  /* Top bar */
  .topbar{display:flex;align-items:center;gap:10px;padding:6px 0 8px;}
  .topbar img{width:30px;height:30px;filter:drop-shadow(0 0 8px var(--blue-glow));}
  .topbar span{font-weight:700;letter-spacing:.2px;font-size:16px;}
  .topbar span b{color:var(--blue-2);font-weight:800;}
  .topbar .tag{
    margin-left:auto;font-size:11px;color:var(--text-faint);
    border:1px solid var(--card-border);padding:4px 10px;border-radius:999px;
  }

  /* Sections */
  .screen{display:none;animation:fadein .35s ease;}
  .screen.active{display:block;}
  @keyframes fadein{from{opacity:0;transform:translateY(6px);}to{opacity:1;transform:translateY(0);}}

  .card{
    background:linear-gradient(180deg, var(--card), #0d1324);
    border:1px solid var(--card-border);
    border-radius:var(--radius);
    padding:26px;
    box-shadow:0 20px 60px rgba(0,0,0,.35);
  }

  /* Hero */
  .hero{text-align:center;padding:38px 10px 10px;}
  .hero .logo-ring{
    width:132px;height:132px;margin:0 auto 22px;position:relative;
  }
  .hero .logo-ring img{width:100%;height:100%;filter:drop-shadow(0 0 30px var(--blue-glow));}
  .hero h1{font-size:34px;margin:0 0 6px;letter-spacing:.2px;}
  .hero h1 b{
    background:linear-gradient(90deg,var(--blue),var(--blue-2));
    -webkit-background-clip:text;background-clip:text;color:transparent;
  }
  .hero p.tagline{color:var(--text-dim);font-size:16px;margin:0 auto 26px;max-width:480px;}
  .disclaimer{
    font-size:12.5px;color:var(--text-faint);background:#0a0f1e;
    border:1px dashed var(--card-border);border-radius:12px;padding:12px 14px;
    margin:22px 0;text-align:left;
  }
  .disclaimer b{color:var(--text-dim);}

  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    background:linear-gradient(90deg,var(--blue),var(--blue-2));
    color:#04101f;font-weight:700;border:none;border-radius:12px;
    padding:14px 26px;font-size:15px;cursor:pointer;
    box-shadow:0 10px 30px var(--blue-glow);
    transition:transform .15s ease, box-shadow .15s ease;
  }
  .btn:hover{transform:translateY(-1px);box-shadow:0 14px 36px var(--blue-glow);}
  .btn:active{transform:translateY(0);}
  .btn.secondary{
    background:transparent;color:var(--text);border:1px solid var(--card-border);
    box-shadow:none;font-weight:600;
  }
  .btn.ghost{background:transparent;color:var(--text-dim);box-shadow:none;border:1px solid transparent;}
  .btn:disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none;}
  .row-btns{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-top:8px;}

  /* Progress */
  .progress-wrap{margin-bottom:18px;}
  .progress-top{display:flex;justify-content:space-between;font-size:12px;color:var(--text-faint);margin-bottom:8px;}
  .progress-bar{height:6px;background:#0a0f1e;border-radius:999px;overflow:hidden;border:1px solid var(--card-border);}
  .progress-fill{height:100%;background:linear-gradient(90deg,var(--blue),var(--blue-2));border-radius:999px;transition:width .35s ease;}

  .dim-pill{
    display:inline-block;font-size:11.5px;color:var(--blue-2);
    background:rgba(56,189,248,.08);border:1px solid rgba(56,189,248,.25);
    padding:4px 10px;border-radius:999px;margin-bottom:14px;letter-spacing:.3px;
  }
  .question{font-size:19px;font-weight:600;margin:0 0 20px;line-height:1.45;}
  .options{display:flex;flex-direction:column;gap:10px;}
  .option{
    text-align:left;background:#0c1122;border:1px solid var(--card-border);
    color:var(--text);padding:14px 16px;border-radius:12px;font-size:14.5px;
    cursor:pointer;transition:border-color .15s ease, background .15s ease, transform .1s ease;
  }
  .option:hover{border-color:var(--blue-2);background:#0e152a;}
  .option.selected{border-color:var(--blue-2);background:rgba(56,189,248,.12);}
  .option .k{color:var(--text-faint);margin-right:8px;font-size:12px;}

  .nav-row{display:flex;justify-content:space-between;align-items:center;margin-top:22px;}
  .nav-row .spacer{flex:1;}

  /* Profile summary */
  .summary-title{font-size:20px;font-weight:700;margin:0 0 4px;}
  .summary-sub{color:var(--text-dim);font-size:14px;margin:0 0 22px;}
  .dim-row{margin-bottom:14px;}
  .dim-row .dim-head{display:flex;justify-content:space-between;font-size:13px;margin-bottom:6px;}
  .dim-row .dim-head span:first-child{color:var(--text-dim);}
  .dim-row .dim-head span:last-child{color:var(--text-faint);}
  .bar-track{height:8px;background:#0a0f1e;border-radius:999px;overflow:hidden;border:1px solid var(--card-border);}
  .bar-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,var(--blue),var(--blue-2));}

  .nn-box{
    margin-top:22px;padding:16px;border-radius:12px;
    background:rgba(251,191,36,.06);border:1px solid rgba(251,191,36,.3);
  }
  .nn-box label{display:flex;align-items:flex-start;gap:10px;font-size:13.5px;color:var(--text-dim);cursor:pointer;}
  .nn-box input{margin-top:3px;}

  /* Match selection */
  .match-grid{display:flex;flex-direction:column;gap:12px;margin-top:18px;}
  .match-card{
    display:flex;align-items:center;gap:14px;background:#0c1122;
    border:1px solid var(--card-border);border-radius:14px;padding:14px 16px;
    cursor:pointer;transition:border-color .15s ease, background .15s ease;
  }
  .match-card:hover{border-color:var(--blue-2);background:#0e152a;}
  .match-avatar{
    width:46px;height:46px;border-radius:50%;flex:none;
    display:flex;align-items:center;justify-content:center;font-size:20px;
    background:linear-gradient(135deg,var(--blue),var(--blue-2));color:#04101f;font-weight:800;
  }
  .match-info b{display:block;font-size:15px;}
  .match-info span{font-size:13px;color:var(--text-dim);}

  /* Result */
  .result-head{display:flex;flex-direction:column;align-items:center;text-align:center;padding:6px 0 8px;}
  .gauge{position:relative;width:172px;height:172px;margin-bottom:14px;}
  .gauge svg{width:100%;height:100%;transform:rotate(-90deg);}
  .gauge .pct{
    position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
    flex-direction:column;
  }
  .gauge .pct b{font-size:38px;line-height:1;}
  .gauge .pct span{font-size:11px;color:var(--text-faint);margin-top:4px;letter-spacing:.3px;text-transform:uppercase;}
  .result-names{color:var(--text-dim);font-size:14px;margin-bottom:2px;}

  .crit-banner{
    display:flex;gap:12px;align-items:flex-start;
    background:rgba(248,113,113,.08);border:1px solid rgba(248,113,113,.35);
    border-radius:14px;padding:16px;margin:18px 0;
  }
  .crit-banner .icon{font-size:20px;}
  .crit-banner b{color:#fca5a5;display:block;margin-bottom:4px;font-size:14px;}
  .crit-banner p{margin:0;font-size:13.5px;color:var(--text-dim);}

  .section-title{
    font-size:12.5px;text-transform:uppercase;letter-spacing:.6px;color:var(--text-faint);
    margin:26px 0 12px;font-weight:700;
  }
  .insight{
    display:flex;gap:10px;align-items:flex-start;padding:12px 0;
    border-top:1px solid var(--card-border);
  }
  .insight:first-of-type{border-top:none;padding-top:0;}
  .insight .dot{width:8px;height:8px;border-radius:50%;margin-top:6px;flex:none;}
  .insight.strength .dot{background:var(--green);}
  .insight.watch .dot{background:var(--amber);}
  .insight.diff .dot{background:var(--text-faint);}
  .insight p{margin:0;font-size:14px;color:var(--text-dim);}
  .insight p b{color:var(--text);}

  .footer-note{
    margin-top:30px;padding-top:18px;border-top:1px solid var(--card-border);
    font-size:12px;color:var(--text-faint);text-align:center;
  }

  .algo-toggle{
    margin-top:16px;text-align:center;
  }
  .algo-box{
    display:none;margin-top:14px;background:#080c17;border:1px solid var(--card-border);
    border-radius:12px;padding:16px;font-size:12.5px;color:var(--text-faint);
    font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;white-space:pre-wrap;
    max-height:260px;overflow:auto;text-align:left;
  }
  .algo-box.show{display:block;}

  @media (max-width:480px){
    .hero h1{font-size:28px;}
    .card{padding:20px;}
  }

/* ============================================================
   Estilos añadidos para la app piloto (registro, perfil, matches)
   Reutilizan los mismos tokens de color/espaciado que la demo.
   ============================================================ */

.navbar{
  display:flex;align-items:center;gap:10px;padding:14px 0;
  border-bottom:1px solid var(--card-border);margin-bottom:24px;
}
.navbar img{width:28px;height:28px;filter:drop-shadow(0 0 8px var(--blue-glow));}
.navbar .brand{font-weight:800;font-size:15px;}
.navbar .brand b{color:var(--blue-2);}
.navbar nav{display:flex;gap:4px;margin-left:20px;}
.navbar nav a{
  color:var(--text-dim);text-decoration:none;font-size:13.5px;font-weight:600;
  padding:7px 12px;border-radius:8px;
}
.navbar nav a.active{color:var(--text);background:rgba(56,189,248,.1);}
.navbar nav a:hover{color:var(--text);}
.navbar .spacer{flex:1;}
.navbar form{margin:0;}
.navbar .logout-btn{
  background:none;border:1px solid var(--card-border);color:var(--text-faint);
  border-radius:8px;padding:7px 12px;font-size:13px;cursor:pointer;
}
.navbar .logout-btn:hover{color:var(--text);border-color:var(--blue-2);}

.form-group{margin-bottom:16px;}
.form-group label{display:block;font-size:13px;color:var(--text-dim);margin-bottom:6px;font-weight:600;}
.form-group .hint{font-size:12px;color:var(--text-faint);margin-top:6px;}
.form-group input[type=text],
.form-group input[type=email],
.form-group input[type=password],
.form-group input[type=number],
.form-group select,
.form-group textarea{
  width:100%;background:#0c1122;border:1px solid var(--card-border);color:var(--text);
  padding:12px 14px;border-radius:10px;font-size:14.5px;font-family:inherit;
}
.form-group select{appearance:auto;}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{outline:none;border-color:var(--blue-2);}
.form-group textarea{resize:vertical;min-height:90px;}
.form-checkbox{display:flex;align-items:flex-start;gap:10px;font-size:13.5px;color:var(--text-dim);}
.form-checkbox input{margin-top:3px;}

.alert{
  padding:12px 14px;border-radius:10px;font-size:13.5px;margin-bottom:18px;
}
.alert.error{background:rgba(248,113,113,.08);border:1px solid rgba(248,113,113,.35);color:#fca5a5;}
.alert.success{background:rgba(52,211,153,.08);border:1px solid rgba(52,211,153,.35);color:#86efac;}
.alert.info{background:rgba(56,189,248,.08);border:1px solid rgba(56,189,248,.3);color:var(--blue-2);}

.auth-card{max-width:400px;margin:40px auto 0;}
.auth-card h1{font-size:22px;margin:0 0 4px;text-align:center;}
.auth-card .sub{color:var(--text-dim);font-size:13.5px;text-align:center;margin:0 0 24px;}
.auth-switch{text-align:center;font-size:13px;color:var(--text-faint);margin-top:18px;}

.photo-grid{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:16px;}
.photo-thumb{
  position:relative;width:96px;height:96px;border-radius:14px;overflow:hidden;
  border:1px solid var(--card-border);background:#0c1122;
}
.photo-thumb img{width:100%;height:100%;object-fit:cover;display:block;}
.photo-thumb.primary{border-color:var(--blue-2);box-shadow:0 0 0 2px rgba(56,189,248,.25);}
.photo-thumb .badge{
  position:absolute;bottom:4px;left:4px;font-size:9.5px;background:rgba(0,0,0,.55);
  color:var(--blue-2);padding:2px 6px;border-radius:999px;font-weight:700;
}
/* Cada acción (eliminar / hacer principal) es su propio <form>; cada uno
   se posiciona por separado para no pisarse entre sí. */
.photo-thumb .photo-action-delete{position:absolute;top:4px;right:4px;margin:0;}
.photo-thumb .photo-action-primary{position:absolute;bottom:4px;left:4px;margin:0;}
.photo-thumb .del-btn{
  background:rgba(0,0,0,.55);border:none;color:#fca5a5;border-radius:50%;
  width:20px;height:20px;font-size:11px;cursor:pointer;line-height:1;
}
.photo-thumb .make-primary-btn{
  background:rgba(0,0,0,.55);border:none;color:var(--blue-2);
  padding:2px 6px;border-radius:999px;font-weight:700;font-size:9.5px;cursor:pointer;
}
.upload-box{
  border:1px dashed var(--card-border);border-radius:14px;padding:18px;text-align:center;
}
.upload-box input[type=file]{color:var(--text-dim);font-size:13px;}

.person-card{
  display:flex;align-items:center;gap:14px;background:#0c1122;
  border:1px solid var(--card-border);border-radius:14px;padding:14px 16px;
  cursor:pointer;transition:border-color .15s ease, background .15s ease;text-decoration:none;color:inherit;
}
.person-card:hover{border-color:var(--blue-2);background:#0e152a;}
.person-avatar{
  width:52px;height:52px;border-radius:50%;flex:none;object-fit:cover;
  background:linear-gradient(135deg,var(--blue),var(--blue-2));
  display:flex;align-items:center;justify-content:center;font-weight:800;color:#04101f;
}
.person-info{flex:1;min-width:0;}
.person-info b{display:block;font-size:15px;}
.person-info span{font-size:12.5px;color:var(--text-dim);}
.person-pct{
  font-size:18px;font-weight:800;color:var(--blue-2);flex:none;
  font-variant-numeric:tabular-nums;
}

.status-pill{
  display:inline-block;font-size:11px;font-weight:700;padding:3px 9px;
  border-radius:999px;margin-top:4px;letter-spacing:.2px;
}
.status-pill.status-good{color:var(--green);background:rgba(52,211,153,.1);border:1px solid rgba(52,211,153,.3);}
.status-pill.status-neutral{color:var(--amber);background:rgba(251,191,36,.1);border:1px solid rgba(251,191,36,.3);}
.status-pill.status-bad{color:var(--red);background:rgba(248,113,113,.1);border:1px solid rgba(248,113,113,.3);}

.result-avatar-row{display:flex;align-items:center;justify-content:center;gap:-10px;margin-bottom:6px;}
.result-avatar-row img{
  width:54px;height:54px;border-radius:50%;object-fit:cover;border:2px solid var(--bg-2);
  margin:0 -8px;
}

.empty-state{text-align:center;padding:36px 10px;color:var(--text-dim);font-size:14px;}
.empty-state .big{font-size:32px;margin-bottom:10px;}

.steps-hint{
  display:flex;gap:8px;font-size:12px;color:var(--text-faint);margin-bottom:18px;flex-wrap:wrap;
}
.steps-hint span{
  padding:4px 10px;border-radius:999px;border:1px solid var(--card-border);
}
.steps-hint span.done{color:var(--green);border-color:rgba(52,211,153,.35);}
.steps-hint span.current{color:var(--blue-2);border-color:rgba(56,189,248,.4);background:rgba(56,189,248,.08);}

/* El cuestionario real usa <form><button class="option"> en vez de <div>
   (para funcionar sin JavaScript) — normalizamos el <button>. */
.options form{margin:0;}
.options .option{width:100%;font-family:inherit;display:block;}

/* Panel de administración */
.admin-table{width:100%;border-collapse:collapse;font-size:13px;white-space:nowrap;}
.admin-table th{
  text-align:left;color:var(--text-faint);font-size:11px;text-transform:uppercase;
  letter-spacing:.4px;padding:8px 10px;border-bottom:1px solid var(--card-border);
}
.admin-table td{padding:8px 10px;border-bottom:1px solid var(--card-border);color:var(--text-dim);}
.admin-table tbody tr:hover{background:#0c1122;}
.admin-table form{margin:0;}

/* Chat interno (Bloque 7.19) */
.chat-card{display:flex;flex-direction:column;max-width:560px;margin:0 auto;}
.chat-header{display:flex;align-items:center;gap:12px;padding-bottom:16px;border-bottom:1px solid var(--card-border);margin-bottom:16px;}
.chat-header b{display:block;font-size:15px;}
.chat-messages{
  display:flex;flex-direction:column;gap:8px;min-height:200px;max-height:50vh;overflow-y:auto;
  padding:4px 2px;margin-bottom:14px;
}
.msg-row{display:flex;}
.msg-row.mine{justify-content:flex-end;}
.msg-bubble{
  max-width:78%;padding:10px 14px;border-radius:16px;font-size:14px;line-height:1.4;
  background:#0c1122;border:1px solid var(--card-border);color:var(--text);word-wrap:break-word;
}
.msg-row.mine .msg-bubble{
  background:linear-gradient(90deg,var(--blue),var(--blue-2));color:#04101f;border:none;font-weight:500;
}
.chat-form{display:flex;gap:10px;align-items:flex-end;}
.chat-form textarea{
  flex:1;background:#0c1122;border:1px solid var(--card-border);color:var(--text);
  padding:12px 14px;border-radius:10px;font-size:14.5px;font-family:inherit;resize:vertical;min-height:44px;max-height:140px;
}
.chat-form textarea:focus{outline:none;border-color:var(--blue-2);}