/* ==========================================================================
   1. VARIABLES Y RESET
   ========================================================================== */
:root {
    --color-primario: #2c3e50;
    --color-acento: #3498db;
    --color-acento-hover: #2980b9;
    --color-fondo-body: #ecf0f1;
    --color-fondo-panel: #ffffff;
    --color-texto-secundario: #7f8c8d;
    --estado-ok: #27ae60;
    --estado-pendiente: #f39c12;
    --estado-error: #c0392b;
    --sombra-suave: 0 2px 15px rgba(0,0,0,0.05);
    --borde-sutil: 1px solid #e0e0e0;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
    background-color: var(--color-fondo-body);
    color: var(--color-primario);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    line-height: 1.6;
}

/* ==========================================================================
   2. ESTRUCTURA APP PRINCIPAL (Sticky Footer)
   ========================================================================== */
#aplicacionPrincipal {
    min-height: 100vh; /* Ocupa toda la pantalla */
    display: flex;
    flex-direction: column; /* Organiza verticalmente */
}

main {
    padding: 30px 0;
    flex: 1; /* Esto empuja el footer hacia abajo si hay poco contenido */
    width: 100%;
}

.contenedor {
    width: 92%;
    max-width: 1200px;
    margin: 0 auto;
}

.oculto { display: none !important; }

/* ==========================================================================
   3. HEADER Y NAVEGACIÓN
   ========================================================================== */
header {
    background-color: var(--color-fondo-panel);
    padding: 1rem 0;
    box-shadow: var(--sombra-suave);
    border-bottom: var(--borde-sutil);
}

.encabezado-flex { display: flex; justify-content: space-between; align-items: center; }

h1 { font-size: 1.4rem; font-weight: 600; color: var(--color-primario); }

nav {
    background-color: #f8f9fa;
    padding: 5px;
    border-radius: 8px;
    border: var(--borde-sutil);
}

.boton-nav {
    background: transparent; border: none; color: var(--color-texto-secundario);
    padding: 8px 16px; cursor: pointer; font-weight: 500; border-radius: 6px;
    transition: all 0.3s ease;
}
.boton-nav:hover { color: var(--color-primario); background-color: rgba(0,0,0,0.03); }
.boton-nav.activo { background-color: var(--color-fondo-panel); color: var(--color-acento); box-shadow: 0 2px 5px rgba(0,0,0,0.08); font-weight: 600; }

.boton-logout {
    background: transparent; border: 1px solid #ef4444; color: #ef4444;
    padding: 5px 15px; border-radius: 4px; cursor: pointer; font-size: 0.9rem; margin-left: 20px;
}
.boton-logout:hover { background: #ef4444; color: white; }

/* ==========================================================================
   4. PANELES Y TABLAS
   ========================================================================== */
.seccion-vista {
    background: var(--color-fondo-panel); padding: 30px; border-radius: 12px;
    box-shadow: var(--sombra-suave); border: var(--borde-sutil); margin-bottom: 20px;
}

.titulo-seccion { font-size: 1.3rem; color: var(--color-primario); margin-bottom: 25px; }

.tabla-scroll { overflow-x: auto; }
.tabla-academica { width: 100%; border-collapse: separate; border-spacing: 0; }
.tabla-academica th, .tabla-academica td { padding: 15px 20px; text-align: left; border-bottom: var(--borde-sutil); }
.tabla-academica th { background-color: #f8f9fa; color: var(--color-texto-secundario); border-top: var(--borde-sutil); }
.tabla-academica th:first-child { border-top-left-radius: 8px; }
.tabla-academica th:last-child { border-top-right-radius: 8px; }
.tabla-academica tbody tr:hover { background-color: #f9fafb; }

/* Etiquetas y Botones */
.etiqueta { padding: 6px 12px; border-radius: 20px; font-size: 0.8rem; font-weight: 600; display: inline-block; }
.estado-ok { background-color: #d4edda; color: var(--estado-ok); }
.estado-pendiente { background-color: #fce5cd; color: var(--estado-pendiente); }
.estado-retraso { background-color: #f8d7da; color: var(--estado-error); }

.boton-accion {
    border: none; padding: 8px; width: 32px; height: 32px; border-radius: 50%;
    cursor: pointer; font-size: 0.9rem; margin: 0 4px; transition: all 0.2s;
    display: inline-flex; align-items: center; justify-content: center;
}
.boton-accion:hover { transform: translateY(-2px); box-shadow: 0 2px 5px rgba(0,0,0,0.1); }
.boton-editar { background-color: #e3f2fd; color: var(--color-acento); }
.boton-eliminar { background-color: #fbe9e7; color: var(--estado-error); }
.boton-ver { background-color: #ffa600; color: white; }

/* ==========================================================================
   5. FORMULARIOS
   ========================================================================== */
.grupo-form { margin-bottom: 20px; }
.grupo-form label { display: block; font-weight: 600; margin-bottom: 8px; }
.grupo-form input { width: 100%; padding: 12px 15px; border: 1px solid #dcdfe6; border-radius: 8px; background-color: #fdfdfd; }
.boton-principal {
    background-color: var(--color-acento); color: white; padding: 14px 24px;
    border: none; border-radius: 8px; cursor: pointer; font-weight: 600; width: 100%;
}
.boton-principal:hover { background-color: var(--color-acento-hover); }

/* ==========================================================================
   6. PANTALLA DE BIENVENIDA (MODO CLARO)
   ========================================================================== */
.bienvenida-container {
    position: fixed; top: 0; left: 0; width: 100%; height: 100vh;
    background-color: #f8fafc;
    background-image: radial-gradient(#cbd5e1 1px, transparent 1px);
    background-size: 40px 40px;
    display: flex; justify-content: center; align-items: center;
    z-index: 2000; overflow: hidden;
    transition: opacity 0.5s ease-out 2.5s;
}

.orbe { position: absolute; border-radius: 50%; filter: blur(60px); opacity: 0.8; z-index: 1; animation: flotarFondo 8s infinite alternate ease-in-out; }
.orbe-1 { width: 400px; height: 400px; background: linear-gradient(135deg, #dbeafe 0%, #60a5fa 100%); top: -10%; left: 10%; }
.orbe-2 { width: 350px; height: 350px; background: linear-gradient(135deg, #e0e7ff 0%, #818cf8 100%); bottom: 5%; right: 5%; animation-delay: -3s; }
.orbe-3 { width: 250px; height: 250px; background: linear-gradient(135deg, #fae8ff 0%, #f472b6 100%); bottom: 20%; left: 30%; animation-duration: 12s; }
@keyframes flotarFondo { 0% { transform: translate(0, 0) scale(1); } 100% { transform: translate(40px, -40px) scale(1.1); } }

.glass-card {
    background: rgba(255, 255, 255, 0.65); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.8); padding: 3.5rem; border-radius: 30px;
    box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.1), 0 0 0 1px rgba(255,255,255,0.5) inset;
    max-width: 650px; text-align: center; position: relative; z-index: 10;
}

.titulo-hero { font-size: 3.2rem; color: #1e293b; font-weight: 800; line-height: 1.1; margin-bottom: 0.5rem; }
.texto-gradiente { background: linear-gradient(135deg, #2563eb, #0891b2); -webkit-background-clip: text; background-clip: text; color: transparent; }
.subtitulo-hero { font-size: 1.15rem; color: #64748b; margin-bottom: 2.5rem; }
.icono-hero { font-size: 5.5rem; display: inline-block; filter: drop-shadow(0 10px 10px rgba(0, 0, 0, 0.15)); animation: flotarCohete 3s ease-in-out infinite; }
@keyframes flotarCohete { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-15px); } }

/* Inputs Login Modernos (Texto Oscuro) */
.login-form { display: flex; flex-direction: column; gap: 15px; margin-bottom: 20px; width: 100%; }
.input-glass {
    width: 100%; padding: 14px; border-radius: 50px; border: 1px solid #cbd5e1;
    background: rgba(255, 255, 255, 0.9); outline: none; text-align: center; font-size: 1rem;
    color: #1e293b; transition: 0.3s;
}
.input-glass:focus { border-color: #2563eb; background: white; box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1); }
.boton-hero {
    background: linear-gradient(135deg, #2563eb, #0284c7); color: white; border: none; padding: 18px 45px;
    font-size: 1.1rem; font-weight: 700; border-radius: 50px; cursor: pointer; box-shadow: 0 10px 25px -5px rgba(37, 99, 235, 0.4);
    transition: all 0.3s ease; position: relative; overflow: hidden;
}
.boton-hero:hover { transform: translateY(-3px); box-shadow: 0 15px 35px -5px rgba(37, 99, 235, 0.5); }

/* Links Login */
.texto-toggle { color: #64748b; font-size: 0.9rem; margin-top: 10px; }
.texto-toggle a { color: #2563eb; font-weight: 700; text-decoration: none; }
.grupo-checkbox { display: flex; align-items: center; gap: 10px; justify-content: center; background: rgba(0,0,0,0.05); padding: 10px; border-radius: 8px; margin: 5px 0; }
.error-msg { color: #ef4444; font-size: 0.9rem; font-weight: bold; min-height: 20px; }

/* Animación de entrada App */
.mostrar-app-animado { display: flex !important; flex-direction: column; animation: aparecerSuave 0.8s forwards; }
@keyframes aparecerSuave { from { opacity: 0; } to { opacity: 1; } }
.bienvenida-container.desaparecer { transition: opacity 0.5s ease-out 2.5s; }

/* Animación Cohete */
.cohete-despegando { transform-origin: center center; animation: espiralGigante 3s cubic-bezier(0.55, 0.055, 0.675, 0.19) forwards !important; }
@keyframes espiralGigante {
    0% { transform: scale(1) rotate(0deg); opacity: 1; }
    20% { transform: scale(0.5) rotate(-90deg); opacity: 1; }
    100% { transform: scale(100) rotate(1080deg); opacity: 0; }
}

/* ==========================================================================
   7. MODAL Y ALERTAS
   ========================================================================== */
.modal-overlay {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(15, 23, 42, 0.8); backdrop-filter: blur(5px);
    display: flex; justify-content: center; align-items: center; z-index: 3000; opacity: 1; transition: opacity 0.3s;
}
.modal-overlay.oculto { display: none; opacity: 0; }
.modal-contenido { background: white; padding: 30px; border-radius: 15px; width: 90%; max-width: 500px; position: relative; text-align: left; box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.2); }
.cerrar-modal { position: absolute; top: 15px; right: 20px; font-size: 2rem; cursor: pointer; color: #64748b; line-height: 1; }
.label-modal { font-weight: bold; color: #2563eb; margin-top: 15px; margin-bottom: 5px; font-size: 0.9rem; text-transform: uppercase; }
.texto-informe { background: #f1f5f9; padding: 15px; border-radius: 8px; border-left: 4px solid #2563eb; white-space: pre-wrap; color: #334155; max-height: 300px; overflow-y: auto; }

#contenedorAlertas { position: fixed; top: 20px; right: 20px; z-index: 9999; }
.alerta { padding: 15px 20px; margin-bottom: 10px; border-radius: 8px; box-shadow: 0 4px 12px rgba(0,0,0,0.15); display: flex; align-items: center; animation: slideInRight 0.3s ease-out; min-width: 300px; background: white; border-left: 5px solid; }
.alerta-exito { border-color: var(--estado-ok); } .alerta-exito::before { content: '✅'; margin-right: 10px; }
.alerta-error { border-color: var(--estado-error); } .alerta-error::before { content: '⚠️'; margin-right: 10px; }
@keyframes slideInRight { from { transform: translateX(100%); opacity: 0; } to { transform: translateX(0); opacity: 1; } }

/* ==========================================================================
   8. SISTEMA DE ROLES Y FOOTER
   ========================================================================== */
body.rol-usuario .solo-admin { display: none !important; }

/* IMPRESIÓN */
.boton-imprimir { background-color: #6c757d; color: white; border: none; padding: 10px 20px; border-radius: 6px; cursor: pointer; font-weight: 600; }
.cabecera-reporte-flex { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }
.solo-impresion { display: none; }

.pie-pagina { text-align: center; padding: 20px; color: var(--color-texto-secundario); font-size: 0.9rem; background: var(--color-fondo-panel); border-top: var(--borde-sutil); margin-top: auto; }

@media print {
    header, nav, footer, #pantallaBienvenida, #seccionRegistro, .boton-imprimir, .grupo-form, #contenedorAlertas { display: none !important; }
    .ocultar-impresion, .boton-accion, th:last-child, td:last-child { display: none !important; }
    body, #aplicacionPrincipal, main { background: white !important; color: black !important; height: auto !important; margin: 0 !important; padding: 0 !important; overflow: visible !important; }
    .solo-impresion { display: block !important; text-align: center; margin-bottom: 20px; }
    .seccion-vista { box-shadow: none !important; border: none !important; padding: 0 !important; margin: 0 !important; }
    table { width: 100% !important; border: 1px solid #000 !important; }
    th, td { border: 1px solid #000 !important; color: #000 !important; padding: 5px !important; }
    .etiqueta { border: 1px solid #000; print-color-adjust: exact; -webkit-print-color-adjust: exact; }
}