/* =================================================================================== */
/* 1. IMPORTACIÓN DE FUENTES (Poppins: Variedades para jerarquía visual)             */
/* =================================================================================== */
@font-face { font-family: Poppins-Regular; src: url('fuentes/poppins/Poppins-Regular.ttf'); }
@font-face { font-family: Poppins-Medium; src: url('fuentes/poppins/Poppins-Medium.ttf'); }
@font-face { font-family: Poppins-Bold; src: url('fuentes/poppins/Poppins-Bold.ttf'); }
@font-face { font-family: Poppins-SemiBold; src: url('fuentes/poppins/Poppins-SemiBold.ttf'); }

/* Definición de Variables de Color Académicas para fácil mantenimiento */
:root {
  --primary-blue: #1e3a8a; /* Azul Profundo Profesional (Trust Blue) - Usado en Banner */
  --accent-blue: #3b82f6; /* Azul Vibrante para acentos y hover */
  
  /* Fondo Oscuro Profundo para la pantalla (Inspirado en el slider/sidebar admin) */
  --bg-dark-screen: #0d122b; 
  
  --form-bg-white: #ffffff; /* Fondo TOTALMENTE BLANCO para el formulario */
  --text-dark: #111827; /* Texto principal oscuro dentro del formulario blanco */
  --text-medium: #4b5563; /* Texto secundario gris dentro del formulario blanco */
  --text-light-muted: rgba(255, 255, 255, 0.6); /* Texto claro para el footer sobre fondo oscuro */
  --accent-gold: #f59e0b; /* Dorado sutil para acentos premium */
  --border-color: #d1d5db; /* Gris claro para bordes de inputs */
}

/* =================================================================================== */
/* 2. REINICIO DE ESTILOS BÁSICOS (Reseteo y comportamiento scroll)                  */
/* =================================================================================== */
* { margin: 0px; padding: 0px; box-sizing: border-box; }
body, html { height: 100%; font-family: Poppins-Regular, sans-serif; overflow-x: hidden; background-color: var(--bg-dark-screen); }

/* Quita los bordes por defecto de los inputs y botones */
input { outline: none; border: none; }
button { outline: none !important; border: none; background: transparent; cursor: pointer;}
.ml-2 { margin-left: 8px; }

/* =================================================================================== */
/* 3. CONTENEDOR PRINCIPAL (Fondo Oscuro Profundo)                                     */
/* =================================================================================== */
.main-academic-container {
  width: 100%; min-height: 100vh;
  display: flex; flex-direction: column; justify-content: flex-start; align-items: center;
  padding: 40px 20px 80px 20px; /* <-- CAMBIADO: 80px abajo para que no choque con el footer fijo */
  background-color: var(--bg-dark-screen);
  background-image: radial-gradient(circle at 10% 10%, rgba(59, 130, 246, 0.05) 0%, transparent 50%);
  position: relative; z-index: 1;
}

/* =================================================================================== */
/* 4. BLOQUE DE LOGIN (Tarjeta Dividida: Banner Azul y Formulario Blanco)              */
/* =================================================================================== */
.split-box-login {
  width: 960px; 
  max-width: 100%;
  max-height: 90vh; 
  display: flex; 
  background: var(--form-bg-white);
  border-radius: 20px;
  overflow: hidden; 
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.3);
  
  margin-top: auto; 
  margin-bottom: auto; /* <-- CAMBIADO: Vuelve a auto para centrar la caja verticalmente */
  
  transition: transform 0.3s ease;
}
/* ------------------------------------------------------------------ */
/* 4.1. COLUMNA IZQUIERDA: Banner (Color Profesional Profundo)       */
/* ------------------------------------------------------------------ */
.academic-banner-side {
  flex: 1.1; /* Un poco más ancho que el formulario */
  background: linear-gradient(135deg, var(--primary-blue) 0%, #152960 100%);
  padding: 50px;
  display: flex; flex-direction: column; justify-content: center; align-items: center;
  position: relative;
  text-align: center;
  color: #fff;
}

/* --- LOGO DEL BANNER: TAMAÑO AUMENTADO AL MÁXIMO RECOMENDADO --- */
.banner-logo {
  max-width: 260px; 
  width: 100%; /* Permite que se reduzca si el contenedor es pequeño */
  max-height: 22vh; /* <-- NUEVO: Obliga al logo a encogerse si la pantalla pierde altura por el zoom */
  object-fit: contain; /* <-- NUEVO: Evita que el logo se deforme o aplaste */
  height: auto;
  margin-bottom: 25px;
  border-radius: 50%; 
  filter: drop-shadow(0px 6px 10px rgba(0, 0, 0, 0.5)) drop-shadow(0px 0px 5px rgba(255, 255, 255, 0.6));
  z-index: 2; 
  position: relative;
  transition: transform 0.4s ease, filter 0.4s ease; 
}

/* Efecto al pasar el mouse (hover) */
.banner-logo:hover {
  transform: scale(1.05) translateY(-5px); /* Flota ligeramente */
  /* El resplandor crece un poco (8px) manteniendo nitidez */
  filter: drop-shadow(0px 10px 15px rgba(0, 0, 0, 0.6)) drop-shadow(0px 0px 8px rgba(255, 255, 255, 0.9)); 
}
/* ---------------------------------------------------- */

.banner-text { z-index: 2; position: relative; }

.banner-text h2 {
  font-family: Poppins-Bold; font-size: 28px;
  color: #fff; text-transform: uppercase; letter-spacing: 2px;
  text-shadow: 0px 2px 4px rgba(0,0,0,0.3);
}

.banner-text p { color: rgba(255, 255, 255, 0.8); font-size: 14px; margin-top: 10px; font-family: Poppins-Regular; }

/* ------------------------------------------------------------------ */
/* 4.2. COLUMNA DERECHA: Form Side (ZONA CLARA/BLANCA MANTENIDA)     */
/* ------------------------------------------------------------------ */
.academic-form-side {
  flex: 1;
  padding: 20px 50px;
  background-color: var(--form-bg-white); 
  display: flex; flex-direction: column; justify-content: center;
  align-items: center;
}

/* --- NUEVO: ESTILOS PARA EL LOGO DENTRO DEL FORMULARIO --- */
.form-header-logo {
  margin-bottom: 15px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.form-logo-img {
  max-width: 190px; 
  width: 100%; /* Permite que se reduzca a lo ancho */
  max-height: 12vh; /* <-- NUEVO: Protege el espacio vertical para que los inputs no se salgan */
  object-fit: contain; /* <-- NUEVO: Mantiene sus proporciones perfectas */
  height: auto;
  transition: transform 0.3s ease;
  filter: drop-shadow(0px 5px 8px rgba(0, 0, 0, 0.15)); 
}

.form-logo-img:hover {
  transform: scale(1.05); /* Pequeño zoom al pasar el mouse */
}
/* --------------------------------------------------------- */

.form-title-main {
  font-family: Poppins-SemiBold; font-size: 28px;
  color: var(--text-dark); text-align: center; margin-bottom: 5px;
}

.form-subtitle {
    font-family: Poppins-Regular; font-size: 14px;
    color: var(--text-medium);
    text-align: center; margin-bottom: 40px;
}

/* =================================================================================== */
/* 5. DISEÑO DE INPUTS MODERNOS                                                      */
/* =================================================================================== */
.modern-input-group {
  width: 100%; position: relative; margin-bottom: 30px;
}

/* Etiqueta fija profesional arriba a la izquierda del input */
.input-label-fixed {
  position: absolute; left: 10px; top: -10px;
  background-color: var(--form-bg-white); /* Tapa el borde del input */
  padding: 0 5px;
  color: var(--primary-blue); font-size: 12px;
  font-family: Poppins-Medium;
  pointer-events: none; transition: all 0.3s ease;
  z-index: 10;
}

/* Estilo de la caja del input */
.modern-input {
  font-size: 15px; color: var(--text-dark);
  display: block; width: 100%; height: 50px;
  background: var(--form-bg-white);
  border-radius: 10px;
  border: 1px solid var(--border-color);
  padding: 10px 15px 10px 45px;
  transition: all 0.3s ease;
  font-family: Poppins-Regular;
}

.modern-input::placeholder { color: rgba(75, 85, 99, 0.3); }

/* Iconos integrados sutiles */
.input-icon {
  position: absolute; left: 15px; top: 16px;
  color: var(--text-medium); font-size: 18px;
  transition: all 0.3s ease;
  z-index: 10;
}

/* --- ESTADOS FOCUS --- */
.modern-input:focus {
  border: 2px solid var(--primary-blue);
  box-shadow: 0px 0px 10px rgba(30, 58, 138, 0.1);
}

.modern-input:focus ~ .input-icon { color: var(--accent-blue); }
.modern-input:focus ~ .input-label-fixed { color: var(--accent-gold); }


/* =================================================================================== */
/* 6. BOTÓN PROFESIONAL                                                              */
/* =================================================================================== */
.btn-primary-wrapper { width: 100%; display: flex; justify-content: center; padding-top: 10px; }

.academic-btn-main {
  width: 100%; height: 50px;
  position: relative; overflow: hidden;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary-blue) 0%, var(--accent-blue) 100%);
  border: none;
  transition: all 0.3s ease;
  color: #fff; font-family: Poppins-SemiBold; font-size: 18px;
  display: flex; justify-content: center; align-items: center;
  box-shadow: 0 5px 15px rgba(30, 58, 138, 0.2);
  letter-spacing: 1px;
}

/* --- ESTADOS HOVER BOTÓN --- */
.academic-btn-main:hover {
  background: linear-gradient(135deg, var(--accent-blue) 0%, var(--primary-blue) 100%);
  box-shadow: 0 8px 20px rgba(30, 58, 138, 0.3);
  transform: translateY(-2px);
}

.academic-btn-main:active { transform: translateY(1px); }

/* =================================================================================== */
/* 7. FOOTER PROFESIONAL INTEGRADO (COMPACTO Y A PRUEBA DE ZOOM)                       */
/* =================================================================================== */
.academic-footer {
    position: fixed; 
    bottom: 0; left: 0; width: 100%; 
    background-color: rgba(13, 18, 43, 0.98); /* Fondo un poco más oscuro */
    border-top: 1px solid rgba(255, 255, 255, 0.05); 
    padding: 5px 15px; /* <-- CLAVE: Padding al mínimo (5px arriba/abajo) */
    z-index: 100; 
    min-height: 35px; /* <-- CLAVE: Forzamos una altura base muy pequeña */
}

.footer-container-clean {
    width: 100%; display: flex; justify-content: center; align-items: center;
}

.footer-copyright {
    display: flex; 
    flex-direction: row; 
    align-items: center;
    justify-content: center;
    gap: 15px; /* Menos separación para que tarden más en saltar de línea */
    flex-wrap: wrap; /* Si el zoom es brutal, saltarán, pero con poco impacto */
}

.footer-social-links { 
    display: flex; 
    gap: 10px; 
    margin-bottom: 0; 
    align-items: center;
}

.footer-icon-clean {
    height: 22px; /* <-- CLAVE: Iconos más pequeños desde el inicio */
    max-height: 4vh; /* <-- CLAVE: Si haces mucho zoom, se encogen automáticamente */
    width: auto;
    filter: drop-shadow(0 0 6px rgba(255, 255, 255, 0.3)); 
    transition: all 0.3s ease;
}

.footer-icon-clean:hover {
    transform: scale(1.1) translateY(-2px);
    filter: drop-shadow(0 0 8px var(--accent-blue));
}

.footer-text-academic {
    display: flex; flex-wrap: wrap; justify-content: center; align-items: center;
    gap: 6px; 
    font-size: 11px; /* <-- Letra ligeramente más pequeña */
    color: var(--text-light-muted);
}

.txt-medium { color: var(--text-light-muted); }

.primary-link-academic {
    color: #00f2ff;
    text-decoration: none;
    transition: all 0.3s ease;
    font-family: Poppins-Medium;
}

.primary-link-academic:hover {
    color: var(--accent-gold);
    text-shadow: 0 0 5px rgba(245, 158, 11, 0.5);
}
/* =================================================================================== */
/* 8. RESPONSIVE DESIGN (Adaptaciones para escritorio, tablets y móviles)              */
/* =================================================================================== */

@media (max-width: 992px) {
  .split-box-login { width: 95%; }
  .academic-banner-side { padding: 40px; }
  .academic-form-side { padding: 40px; }
  .banner-logo { max-width: 190px; }
  .banner-text h2 { font-size: 24px; }
  .form-title-main { font-size: 24px; }
}

/* --- ESTE ES EL NUEVO BLOQUE DE 600px (Reemplaza al de 768px) --- */
/* Al ser más pequeño, soporta mucho más zoom en PC sin que se rompa el diseño de dos columnas */
@media (max-width: 600px) { 
  .split-box-login {
    flex-direction: column; /* Aquí es donde finalmente se apila para evitar que se deforme */
    border-radius: 15px;
    max-height: 95vh;
  }
  
  .academic-banner-side {
    padding: 20px; 
    border-radius: 15px 15px 0 0;
    flex: none; 
  }
  .banner-logo { max-width: 120px; margin-bottom: 10px; }
  .banner-text h2 { font-size: 16px; letter-spacing: 1px; }
  .banner-text p { display: none; } /* Ocultamos texto extra para ahorrar espacio */
  
  .academic-form-side {
    padding: 20px;
    border-radius: 0 0 15px 15px;
    justify-content: flex-start; 
  }
  
  .form-header-logo { margin-bottom: 10px; }
  .form-logo-img { max-width: 150px; }
  
  .form-title-main { font-size: 20px; margin-bottom: 5px; }
  .form-subtitle { font-size: 12px; margin-bottom: 20px; }
  .modern-input-group { margin-bottom: 20px; }
  .modern-input { height: 45px; font-size: 14px; }
  .input-label-fixed { font-size: 11px; top: -9px; }
  .input-icon { font-size: 16px; top: 14px; }
  .academic-btn-main { height: 45px; font-size: 16px; }

  /* Ajustes para el contenedor y footer fijo en celular o zoom extremo */
  .main-academic-container { padding-bottom: 90px; } 
  .academic-footer { padding: 8px 10px; }
  .footer-copyright { flex-direction: column; gap: 8px; } /* En zoom extremo/móvil, el footer sí se apila */
  .footer-icon-clean { height: 28px; }
  .footer-text-academic { font-size: 10px; line-height: 1.4; gap: 4px; }
  .footer-social-links { margin-bottom: 0; gap: 10px; }
}

@media (max-width: 480px) {
    .academic-banner-side { display: none; } /* En pantallas ultra pequeñas, quitamos el banner azul */
    .split-box-login { border-radius: 15px; }
    .academic-form-side { border-radius: 15px; padding: 25px 20px;}
    .input-label-fixed { display: none; }
    .modern-input { padding-left: 35px; } 
    .input-icon { display: none; }
    .primary-link-academic { display: block; width: 100%; text-align: center; }
}