/* ============================================================  
   FTP9G — Estilos compartidos del sistema web (Consola Instructor v2)  
   Un solo lugar para el estándar visual: colores, header/footer,  
   botones, modales y tarjetas de selección. Ver Carta de Ruta  
   sección 15 (estándar visual) y sección 28 (estructura de archivos).  
   ============================================================ */
@import url('https://fonts.googleapis.com/css2?family=Share+Tech+Mono&display=swap');
*{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg0:#070b14;--bg1:#0b1220;--bg2:#0f1a2e;
  --border:#1a2a40;--border2:#243650;
  --blue:#4a9ede;--blue2:#7ab8e8;--blue3:#b0d4f4;
  --amber:#e8a830;--amber2:#f0c060;
  --green:#2ecc8a;--green2:#5adba8;
  --red:#e84a4a;--red2:#f08080;
  --gray:#4a6a88;
  --text:#c8dff0;--text2:#8aaec8;--text3:#4a6a88;
}
body{
  background:#04060a;
  font-family:'Share Tech Mono',monospace;
  display:flex;justify-content:center;
  padding:20px 12px;min-height:100vh;
}
/* --- Contenedor principal de pantalla --- */
.screen{
  background:var(--bg0);border-radius:12px;overflow:hidden;
  border:0.5px solid var(--border);
  display:flex;flex-direction:column;
  position:relative;width:100%;
}
/* --- Header --- */
.topbar{
  background:rgba(11,18,32,0.92);border-bottom:0.5px solid var(--border);
  padding:11px 20px;display:flex;align-items:center;justify-content:space-between;
}
.logo{color:var(--blue);font-size:13px;letter-spacing:0.12em}
.topbar-sub{font-size:10px;color:var(--text3);letter-spacing:0.08em}
.topbar-right{display:flex;align-items:center;gap:18px}
.topbar-meta{font-size:11px;color:var(--text3);letter-spacing:0.06em}
.role-badge{
  font-size:10px;letter-spacing:0.1em;padding:4px 10px;border-radius:20px;
  background:rgba(232,168,48,0.12);border:0.5px solid var(--amber);color:var(--amber2);
}
.role-badge.instructor{background:rgba(46,204,138,0.12);border-color:var(--green);color:var(--green2)}
/* --- Footer (3 columnas: simulador / cerrar sesión / hora local) --- */
.footer-bar{
  background:rgba(11,18,32,0.92);border-top:0.5px solid var(--border);
  padding:9px 20px;display:flex;justify-content:space-between;align-items:center;
}
.footer-txt{font-size:10px;color:var(--text3);letter-spacing:0.07em}
.logout-link{font-size:10px;color:var(--text3);letter-spacing:0.07em;cursor:pointer;text-decoration:underline}
.logout-link:hover{color:var(--blue2)}
/* --- Botones --- */
.btn{
  background:rgba(10,42,80,0.9);border:0.5px solid var(--blue);border-radius:7px;
  color:var(--blue2);font-family:'Share Tech Mono',monospace;
  font-size:11px;letter-spacing:0.08em;padding:9px 16px;cursor:pointer;
}
.btn:hover{background:rgba(13,58,106,0.95)}
.btn-sm{padding:5px 10px;font-size:10px;border-radius:5px}
.btn-green{border-color:var(--green);color:var(--green2);background:rgba(20,60,45,0.5)}
.btn-amber{border-color:var(--amber);color:var(--amber2);background:rgba(60,45,10,0.5)}
.btn-red{border-color:var(--red);color:var(--red2);background:rgba(60,15,15,0.5)}
.btn-ghost{background:transparent;border-color:var(--border2);color:var(--text2)}
/* --- Tarjetas grandes de selección (Selección de Rol / Menú Instructor) --- */
.roles-grid{display:flex;flex-wrap:wrap;justify-content:center;gap:16px;width:100%;max-width:640px}
.role-btn{
  background:rgba(11,18,32,0.82);border:0.5px solid var(--border2);border-radius:12px;
  padding:24px 28px;display:flex;flex-direction:column;align-items:center;gap:10px;
  width:180px;cursor:pointer;transition:all 0.2s;font-family:'Share Tech Mono',monospace;
}
.role-btn:hover{border-color:var(--role-color);background:rgba(15,26,46,0.95)}
.role-icon{font-size:26px}
.role-label{font-size:12px;letter-spacing:0.14em;color:var(--text)}
.role-sub{font-size:9px;color:var(--text3);letter-spacing:0.08em;text-align:center}
/* --- Modales / overlays (confirmaciones, formularios, detalle) --- */
.overlay{position:fixed;inset:0;background:rgba(2,4,8,0.7);display:none;align-items:center;justify-content:center;z-index:50;padding:20px}
.overlay.open{display:flex}
.modal{
  background:var(--bg0);border:0.5px solid var(--border2);border-radius:12px;
  width:100%;max-height:90vh;overflow:auto;padding:22px 26px;
  display:flex;flex-direction:column;gap:14px;
}
.modal-title{font-size:14px;color:var(--blue2);letter-spacing:0.06em;border-bottom:0.5px solid var(--border);padding-bottom:10px}
.modal-actions{display:flex;justify-content:flex-end;gap:10px;border-top:0.5px solid var(--border);padding-top:14px}
/* --- Campos de formulario --- */
.field{display:flex;flex-direction:column;gap:5px}
.field-label{font-size:9px;color:var(--text3);letter-spacing:0.1em}
.field-input,.field-select{
  background:rgba(15,26,46,0.9);border:0.5px solid var(--border2);border-radius:7px;
  padding:9px 11px;font-size:12px;color:#e8f4ff;font-family:'Share Tech Mono',monospace;width:100%;
}
.field-input:focus{outline:none;border-color:var(--blue)}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.field-error{font-size:10px;color:var(--red2);min-height:12px}
/* --- Pills de estado --- */
.status-pill{font-size:9px;padding:3px 8px;border-radius:12px;letter-spacing:0.05em}
.status-activo{background:rgba(46,204,138,0.12);color:var(--green2);border:0.5px solid var(--green)}
.status-inactivo{background:rgba(232,74,74,0.12);color:var(--red2);border:0.5px solid var(--red)}
/* --- Nota informativa (documentación visible en cada pantalla de prueba) --- */
.note{
  margin-top:14px;width:100%;background:#0a1c14;border:0.5px solid #1a4a30;
  border-radius:8px;padding:14px 18px;font-size:11px;color:#7adba8;line-height:1.6;
}
.note b{color:#a8f0c8}
/* --- Pestañas (tabs) usadas en modales de detalle --- */
.tabs{display:flex;gap:4px;border-bottom:0.5px solid var(--border)}
.tab{padding:8px 14px;font-size:11px;color:var(--text3);cursor:pointer;border-bottom:2px solid transparent}
.tab.active{color:var(--blue2);border-bottom-color:var(--blue)}
.empty-note{font-size:10px;color:var(--text3);text-align:center;padding:20px}
.history-item{font-size:10px;color:var(--text2);border-bottom:0.5px solid var(--border);padding:8px 0}
.history-item:last-child{border-bottom:none}
.history-date{color:var(--text3);margin-right:8px}