:root {
  --color-principal: #2c3e50;
  --color-secundario: #3498db;
  --color-columnas: #ecf0f1;
  --color-BtnPpal: #2c3e50;
  --color-BtnSec: #bdc3c7;
  --color-text: white;
  --color-text1: black;
  --gap-general: 10px;
  --radius-general: 10px;
  --padding-general: 10px;
}
/* =========================
   RESET Y BASE
========================= */
body {
  margin: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: Arial, sans-serif;
}

/* =========================
   HEADER PÚBLICO
========================= */
.header-public {
  position: sticky;
  top: 0;
  z-index: 1000;

  display: flex;
  align-items: center;
  justify-content: space-between;

  background: var(--color-principal);
  color: var(--color-text);
  padding: var(--padding-general);
}

/* Columnas */
.header-left,
.header-center,
.header-right {
  flex: 1;
}

/* IZQUIERDA */
.header-left {
  display: flex;
  align-items: center;
}

/* CENTRO */
.header-center {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}

/* DERECHA */
.header-right {
  display: flex;
  justify-content: flex-end;
}

/* LOGO */
.logo-container {
  background: white;
  padding: var(--padding-general);
  border-radius: 50px;

  display: flex;
  align-items: center;
  justify-content: center;
}

.logo {
  height: 40px;
  object-fit: contain;
}

/* =========================
   CONTENIDO PRINCIPAL
========================= */
.container {
  flex: 1;
  display: flex;
}

.col {
  padding: var(--padding-general);
  background: #f4f6f8;
  padding: 15px;
  border-radius: 8px;
  height: 92%;
  border: 1px solid #2c3e50;
  gap: var(--gap-general);
}

.col-left,
.col-right {
  width: 20%;
  background: var(--color-columnas);
}

.col-center {
  width: 60%;
  text-align: center;
}

/* =========================
   FOOTER
========================= */
.footer {
  height: 50px;
  background: #2c3e50;
  color: var(--color-text);
  text-align: center;
  display: grid;
  grid-template-columns: 20% 1fr 20%;
  align-items: center;
  border-radius: var(--radius-general);
 
}

/* =========================
   BOTÓN BASE GLOBAL
========================= */
.btn {
  padding: var(--padding-general);
  border: none;
  cursor: pointer;
  border-radius: var(--radius-general);
  font-size: 14px;
  transition: 0.2s ease;
}

/* Hover general */
.btn:hover {
  opacity: 0.7;
}

/* TIPOS DE BOTÓNES */
.btn-primario {
  background: var(--color-BtnPpal);
  color: var(--color-text);
}
.btn-secundario {
  background: var(--color-BtnSec);
  color: ar(--color-text1);
}

/* =========================
   OVERLAY BASE (REUTILIZABLE)
========================= */
.overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;

  background: rgba(0,0,0,0.6);
  
  display: flex;
  justify-content: center;
  align-items: center;
}

/* modal */
.modal-registro {
  width: 600px;
  background: white;
  padding: 20px;
  border-radius: 10px;

  display: flex;
  flex-direction: column;
  gap: var(--gap-general);
}

/* FILAS */
.fila {
  width: 100%;
}

.titulo{
  text-align: center;
}
/* FILA 2: 2 COLUMNAS */
.formulario {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 15px;
}


/* botones */
.login-buttons {
  display: flex;
  gap: 10px;
}

/* nota */
.nota {
  font-size: 12px;
  
  text-align: center;
}

input,
select {
  width: 92%;
  margin: 10px 0;
  padding: var(--padding-general);
  border-radius: var(--radius-general);
  
}



/* asegurar capas */
#appOverlay {
  z-index: 1000;
}

#registroOverlay {
  z-index: 2000; /* 🔥 encima del app */
}


/* UTILIDAD */
.hidden {
  display: none !important;
}

/* =========================
   LOGIN
========================= */
.login-box {
  background: white;
  padding: calc(var(--padding-general) + 10px);
  width: 300px;
  border-radius: var(--radius-general);
  text-align: center;
  gap: var(--gap-general);
  
}

.login-box input,
.login-box select {
  width: 92%;
  margin: 10px 0;
  padding: var(--padding-general)
  
}

.password-container {
  position: relative;
  width: 100%;
  align-items: center;
}

/* INPUT */
.password-container input {
  width: 100%;
  padding: var(--padding-general);
  padding-right: 40px; /* espacio para el icono */
  box-sizing: border-box;
}

/* ICONO */
.toggle-password {
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  
  cursor: pointer;
  font-size: 16px;
  opacity: 0.6;
}

.toggle-password:hover {
  opacity: 1;
}
.login-box button {
  width: 100%;
  padding: var(--padding-general);
  margin-top: 5px;
  border: none;
  cursor: pointer;
}
/* BOTONES EN COLUMNA */
.login-buttons {
  display: flex;
  flex-direction: row;
  gap: var(--gap-general);
  margin-top: 10px;
  justify-content: center;  /* centra horizontal */
}



/* LINKS */
.login-links {
  margin-top: 15px;
  display: flex;
  justify-content: space-between;
  font-size: 12px;
}

.login-links a {
  text-decoration: none;
  color: #3498db;
}

.login-links a:hover {
  text-decoration: underline;
}

/* =========================
   APP OVERLAY (MODAL SISTEMA)
========================= */
.app-overlay {
  position: fixed;
  top: 0;
  left: 0;

  width: 100%;
  height: calc(100vh - 50px);

  display: flex;
  justify-content: center;   /* centra horizontalmente */
  align-items: flex-start;

  z-index: 3000;
}

/* =========================
   MODAL APP (VENTANA)
========================= */
.app-modal {
  width: 98%;
  height: 100%;

  background: white;
  border-radius: var(--radius-general);

  display: flex;
  overflow: hidden;

  box-shadow: 0 5px 20px rgba(0,0,0,0.3);

  flex: 1;
  
  flex-direction: row;

  position: relative;
  z-index: 1;
}

.app-modal::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.2);
  display: none;
}

#btnMenu {
  position: relative;
  z-index: 6000;
  cursor: pointer;
}

/* =========================
   SIDEBAR
========================= */
/* SIDEBAR OCULTO POR DEFECTO */
.sidebar {
  position: absolute;   /* clave: sale del flujo */
  top: 50px;
  left: 0;
  height: 100%;

  width: 250px;
  
  background: #34495e; 
  color: var(--color-text);
  padding: var(--padding-general);

  transform: translateX(-100%);
  transition: 0.3s ease;

  z-index: 4000; /* encima del app-modal */
}

.sidebar div {
  padding: var(--padding-general);
  cursor: pointer;
  border-bottom: 1px solid rgba(255,255,255,0.15);
  display: block;
}

.sidebar div:hover {
  background: rgba(255,255,255,0.2);
}

/* SIDEBAR ABIERTO */
.sidebar.open {
  
  transform: translateX(0);
}

/* =========================
   CONTENIDO INTERNO APP
========================= */
.main {
  flex: 1;
  display: flex;
  flex-direction: column;
}

/* HEADER INTERNO */
.header-app {
  position: sticky;
  top: 0;
  z-index: 1000;

  background: #2c3e50;
  color: var(--color-text);
  padding: var(--padding-general);
  height: 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 5000;
}

/* CONTENIDO DINÁMICO */
#contenido {
  flex: 1;
  padding: var(--padding-general);
  overflow: auto;
  background: #f4f6f9;
}

/* CSS DE MODULOS */
/* Modulo Pagina Principal */
.pagina-principal {
  display: grid;
  grid-template-columns: 1fr 2fr 1fr;
  gap: var(--gap-general);
  padding: var(--padding-general);
  align-items: center;
  text-align: center;
  
}