/* ==================================================================== */
/* 1. ESTILOS BASE Y VARIABLES                                            */
/* ==================================================================== */
:root {
    /* Paleta de Colores CECYTEM */
    --color-primary: #004d40;     /* Verde Oscuro (Encabezado) */
    --color-secondary: #001f3f;   /* Azul Marino (Títulos) */
    --color-accent: #00ff62;     /* Verde Lima Brillante (Botones, Acentos) */
    --color-like: #E91E63;       /* Rosa/Rojo para 'Me Gusta' */
    --color-text: #333333;
    --color-bg-light: #f9f9f9;   /* Fondo de Widgets/Bloques */
    --color-white: #ffffff;
    /* Colores para Emociones/Burbujas */
    --color-emotion-happy: #ffccbc; 
    --color-emotion-study: #ffe0b2;
    --color-emotion-text: #333333;
}

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

/* CLAVE 1: CONFIGURACIÓN DEL BODY PARA EL STICKY FOOTER */
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--color-bg-light); 
    color: var(--color-text);
    line-height: 1.6;
    /* AÑADIDOS para el Sticky Footer: */
    display: flex;
    flex-direction: column;
    min-height: 100vh; /* Asegura que el body ocupe TODA la altura de la ventana */
}

a {
    text-decoration: none;
    color: var(--color-primary);
}



/* --- ESTILOS PARA LA CAJA DE BIENVENIDA COMPACTA --- */
.welcome-box {
    /* Limita el ancho máximo para que no se estire en escritorio */
    max-width: 600px; 
    
    /* Centra la caja horizontalmente */
    margin-left: auto !important;
    margin-right: auto !important;
    
    /* Asegura que el contenido interno se alinee y evita el salto de línea */
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    
    /* Resto de estilos estéticos (padding, border-radius, etc.) */
    padding: 15px 20px;
    border-radius: 8px;
    margin-bottom: 25px; 
}

/* 📌 DISTRIBUCIÓN BASE (ESCRITORIO) */
.container {
    display: flex;
    
    /* --- SOLUCIÓN DE ANCHO (Petición del usuario) --- */
    width: 90%;        /* Ocupa el 90% del ancho de la pantalla */
    max-width: 1800px; /* Límite para pantallas 4K */
    margin: 2rem auto; /* Centra el contenedor */
    /* ---------------------------------- */
    
    padding: 0 1rem;   /* Mantiene un padding interno */
    gap: 2rem;
    flex-grow: 1;      /* IMPORTANTE: Mantiene el footer abajo */
}

main.main-content {
    flex: 3;
    min-width: 0; 
}

/* CLAVE: BARRA LATERAL FIJA */
aside.sidebar {
    flex: 1;
    min-width: 300px;
    position: sticky; 
    top: 20px;       
    height: fit-content;
}


.main-content.full-width {
    width: 100%;
    max-width: 1000px; 
    margin: 0 auto;
}

.section-title {
    color: var(--color-primary);
    font-size: 2rem;
    margin-bottom: 0.5rem;
    border-bottom: 2px solid var(--color-accent);
    padding-bottom: 0.5rem;
}

.section-description {
    font-size: 1.1rem;
    color: #555;
    margin-bottom: 2rem;
}


/* ==================================================================== */
/* 2. ENCABEZADO Y NAVEGACIÓN (header.php) - RESPONSIVO               */
/* ==================================================================== */
.main-header {
    display: flex;
    align-items: center; /* Alinea verticalmente */
    flex-wrap: nowrap; 
    background-color: var(--color-primary); 
    padding: 1rem 3%;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    
    /* --- CLAVE DE LA SOLUCIÓN: STICKY HEADER CON CSS --- */
    position: sticky; /* Se encarga de todo automáticamente */
    top: 0;           /* Se pega al borde superior al hacer scroll */
    z-index: 100;     /* Se asegura que esté por encima de todo */
}

/* --- CLAVE DE LAYOUT: Izquierda (logo+nav), Derecha (botones) --- */
.logo-container { 
    display: flex; 
    align-items: center; 
    gap: 1rem;
    flex-shrink: 0; /* No se encoge */
}

.main-nav { 
    /* Se elimina flex-grow: 1 */
    flex-shrink: 1; 
    min-width: 0;   
    margin: 0 1rem;
}

.header-auth-buttons { 
    display: flex; 
    align-items: center; 
    gap: 0.5rem;
    flex-shrink: 0; /* No se encoge */
    margin-left: auto; /* <-- ESTA ES LA MAGIA: empuja esto a la derecha */
}

.logo-container h1 {
    color: var(--color-white);
    font-size: 1.5rem;
    font-weight: 600;
    transition: font-size 0.3s; /* Añadido para transición suave */
}

.logo-img {
    height: 50px; 
    width: 50px;
    border-radius: 50%;
    border: 2px solid var(--color-white);
}

.main-nav ul {
    list-style: none;
    display: flex;
    justify-content: flex-start; /* Alinea los iconos a la izquierda (junto al logo) */
    gap: 1.5rem;
    transition: gap 0.3s;
}

/* Escritorio: Icono y Texto en línea, el texto siempre visible */
.main-nav a {
    text-decoration: none;
    color: #f0f0f0;
    font-weight: 500;
    padding-bottom: 5px;
    transition: color 0.3s, border-bottom 0.3s;
    display: flex; 
    align-items: center;
    gap: 0.5rem; 
    white-space: nowrap; /* Evita que "Guías de Estudio" se parta */
}

.main-nav a .nav-text {
    display: inline; 
    transition: display 0.3s; /* Añadido para transición */
}

.main-nav a i {
    font-size: 1.2rem;
}

.main-nav a:hover,
.main-nav a.active {
    color: var(--color-accent); 
    border-bottom: 2px solid var(--color-accent);
}

.btn-publicar {
    text-decoration: none;
    background-color: var(--color-accent); 
    color: var(--color-primary);
    font-weight: 700;
    padding: 0.6rem 1.2rem;
    border-radius: 50px; 
    transition: all 0.2s;
    white-space: nowrap; /* Evita que el texto "Publicar" se rompa */
}

.btn-publicar:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 15px rgba(118, 255, 3, 0.4);
}

/* Botón de Logout y Perfil */
.btn-logout, .btn-perfil {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 40px; 
    width: 40px;
    color: var(--color-white);
    border-radius: 50%; 
    font-size: 1.1rem;
    transition: background-color 0.2s;
}

.btn-logout {
    background-color: #d32f2f; 
}
.btn-logout:hover {
    background-color: #c62828;
}

.btn-perfil {
    background-color: var(--color-accent);
    color: var(--color-primary);
}
.btn-perfil:hover {
    background-color: #5dcb00;
}


/* ==================================================================== */
/* 3. TARJETAS DE PUBLICACIÓN (PARA index.php)                          */
/* ==================================================================== */
.post-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-bottom: 2rem; 
}

.post-card {
    background: var(--color-white);
    border-radius: 16px; 
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.07); 
    overflow: hidden; 
    position: relative; 
}

.post-grid .post-card {
    margin-bottom: 0; 
}

/* Botón de Borrado (Solo para autor o admin) */
.delete-btn-container {
    position: absolute;
    top: 10px;
    right: 10px;
    z-index: 50; 
}

.btn-delete-post {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background-color: #f44336; 
    color: var(--color-white);
    font-size: 0.9rem;
    transition: background-color 0.2s;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

.btn-delete-post:hover {
    background-color: #d32f2f;
}

.post-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
}

.post-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
}

.post-author {
    line-height: 1.3;
}

.post-author span {
    font-size: 0.9rem;
    color: #777;
}

.post-body {
    padding: 0 1rem 1rem;
}

.post-body h3 {
    font-size: 1.4rem;
    color: var(--color-secondary); 
    margin-bottom: 0.5rem;
}

.post-body a h3 {
    color: var(--color-secondary); 
    transition: color 0.2s;
}
.post-body a:hover h3 {
    color: var(--color-primary); 
}

.post-image {
    width: 100%;
    height: 180px;
    object-fit: cover;
    display: block;
    margin-top: 0;
    border-radius: 12px 12px 0 0; 
}

.hashtags {
    margin-top: 1rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.hashtags span {
    background-color: #eef; 
    color: var(--color-secondary);
    padding: 0.3rem 0.6rem;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 500;
}

.post-footer {
    display: flex;
    gap: 1rem;
    padding: 0 1rem 1rem;
    border-top: 1px solid #f0f0f0;
    padding-top: 1rem;
}

.icon-btn {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    color: #555;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: color 0.3s;
    font-weight: 500;
}

.icon-btn:hover {
    color: var(--color-accent); 
}

/* CLAVE: Estilos para el corazón (Likes) */
.icon-btn .fa-heart {
    color: var(--color-like); 
}
.icon-btn .far.fa-heart {
    color: #555; /* Contorno gris cuando no tiene like */
    transition: color 0.1s;
}
.icon-btn .fas.fa-heart {
    color: var(--color-like); /* Relleno rosa cuando tiene like */
}


/* ==================================================================== */
/* 4. BARRA LATERAL (SIDEBAR) - Widgets Fijos                           */
/* ==================================================================== */
.widget {
    background-color: var(--color-white); 
    border-radius: 16px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.05);
}

.widget h2 {
    color: var(--color-primary); 
    font-size: 1.2rem;
    padding-bottom: 0.5rem;
    margin-bottom: 1rem;
    border-bottom: none; 
    font-weight: 700;
}

/* --- Muro de Emociones (Burbujas y Formulario) --- */
.muro-emociones {
    padding-bottom: 0.5rem; 
}

.emocion-burbuja {
    color: var(--color-emotion-text);
    padding: 1rem 1.2rem;
    border-radius: 12px;
    margin-bottom: 1rem; 
    font-size: 1rem;
    line-height: 1.3;
    cursor: default; 
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}
/* No queremos que la última burbuja tenga margen inferior */
.emociones-lista-scroll .emocion-burbuja:last-child {
    margin-bottom: 0;
}

.emocion-risa {
    background: var(--color-emotion-happy); 
}
.emocion-lectura {
    background: var(--color-emotion-study); 
}

.mood-form {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px dashed #eee;
}

.mood-form input[type="text"] {
    padding: 0.5rem;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 0.9rem;
}

.emoji-select {
    padding: 0.5rem;
    border: 1px solid #ddd;
    border-radius: 8px;
    background-color: var(--color-bg-light);
    font-size: 0.9rem;
}

.btn-mood-submit {
    padding: 0.5rem;
    background-color: var(--color-accent);
    color: var(--color-primary);
    border: none;
    border-radius: 50px;
    font-weight: 700;
    cursor: pointer;
    transition: background-color 0.2s, transform 0.1s;
}
.btn-mood-submit:hover {
    background-color: #5dcb00;
}

/* Eventos Próximos */
.eventos-proximos {
    padding-top: 1rem;
}

.evento-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
    padding: 0.75rem;
    border-radius: 8px;
    background-color: var(--color-bg-light); 
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}
/* No queremos que el último evento tenga margen inferior */
.eventos-lista-scroll .evento-item:last-child {
    margin-bottom: 0;
}

.widget-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
}

.evento-info {
    line-height: 1.2;
    flex-grow: 1;
}

.evento-info strong {
    font-size: 1rem;
    color: var(--color-secondary);
    display: block;
}

.evento-info span {
    font-size: 0.85rem;
    color: #555;
    display: block;
}

.etiqueta-emocion {
    display: inline-block !important;
    background-color: #e0f7fa; 
    color: #00796b;
    padding: 0.1rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem !important;
    font-weight: 600;
    margin-top: 0.3rem;
}

.evento-calendario {
    align-items: flex-start;
    padding: 1rem 0.75rem;
}

.evento-calendario .evento-info {
    border-left: 3px solid var(--color-accent);
    padding-left: 0.75rem;
}


/* ==================================================================== */
/* 5. ESTILOS PARA GUIAS.PHP (Página de Guías)                          */
/* ==================================================================== */

/* * Los estilos de centrado ahora están en la Sección 21 * */

.filter-form {
    margin-bottom: 2rem;
    padding: 1.5rem;
    background-color: var(--color-white);
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.filter-controls {
    display: flex;
    gap: 15px;
    align-items: center;
    flex-wrap: wrap; 
}

.filter-controls input[type="text"],
.filter-controls .materia-select {
    padding: 0.7rem;
    border: 1px solid #ddd;
    border-radius: 8px;
    flex-grow: 1;
    min-width: 150px;
}

.btn-filter, .btn-filter-clear {
    padding: 0.7rem 1.2rem;
    border-radius: 50px;
    font-weight: 600;
    transition: background-color 0.2s, transform 0.1s;
    border: none;
    cursor: pointer;
}

.btn-filter {
    background-color: var(--color-primary);
    color: var(--color-white);
}
.btn-filter:hover {
    background-color: var(--color-secondary);
}

.btn-filter-clear {
    background-color: #f0f0f0;
    color: #555;
}
.btn-filter-clear:hover {
    background-color: #e0e0e0;
}

.guia-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem; 
}

.guia-card {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: #f0fff0; 
    border: 1px solid #e0e0e0;
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
    transition: transform 0.2s, box-shadow 0.2s;
}

.guia-card:hover {
    transform: translateY(-3px); 
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.1);
}

.guia-info {
    flex-grow: 1;
    margin-right: 1.5rem;
}

.guia-materia {
    display: inline-block;
    background-color: var(--color-secondary); 
    color: var(--color-white);
    font-weight: 700;
    padding: 0.3rem 0.8rem;
    border-radius: 50px;
    margin-bottom: 0.5rem;
    font-size: 0.8rem;
}

.guia-info h3 {
    font-size: 1.5rem;
    color: var(--color-primary); 
    margin-bottom: 0.5rem;
}

.guia-info p {
    color: #666;
    margin-bottom: 1rem;
}

.guia-meta {
    font-size: 0.9rem;
    color: #888;
}

.guia-acciones {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

.btn-descarga {
    background-color: var(--color-accent); 
    color: var(--color-primary);
    border: none;
    padding: 0.7rem 1.5rem;
    border-radius: 50px;
    font-weight: 700;
    cursor: pointer;
    margin-bottom: 0.5rem;
    transition: background-color 0.3s, transform 0.1s;
}
.btn-descarga:hover {
    background-color: #5dcb00;
}

.guia-descargas {
    font-size: 0.85rem;
    color: #999;
}


/* ==================================================================== */
/* 6. ESTILOS PARA PROYECTOS.PHP (Página de Proyectos)                  */
/* ==================================================================== */

/* * Los estilos de centrado ahora están en la Sección 21 * */

.proyectos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); 
    gap: 2rem;
    margin-top: 2rem;
}

.proyecto-card {
    background: var(--color-white);
    border: 1px solid #e0e0e0;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s, box-shadow 0.3s;
}

.proyecto-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

.proyecto-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    display: block;
}

.proyecto-body {
    padding: 1.2rem;
}

.proyecto-carrera {
    display: inline-block;
    background-color: var(--color-accent); 
    color: var(--color-primary);
    font-weight: 700;
    padding: 0.25rem 0.7rem;
    border-radius: 50px;
    margin-bottom: 0.7rem;
    font-size: 0.8rem;
}

.proyecto-body h3 {
    font-size: 1.4rem;
    color: var(--color-secondary); 
    margin-bottom: 0.5rem;
}

.proyecto-body p {
    color: #666;
    font-size: 0.95rem;
    margin-bottom: 1rem;
}

.proyecto-meta {
    font-size: 0.85rem;
    color: #888;
    margin-bottom: 1rem;
}

.btn-ver-detalles {
    text-decoration: none;
    color: var(--color-primary);
    font-weight: 600;
    display: block;
    padding: 0.5rem 0;
    border-top: 1px solid #f0f0f0;
    text-align: right;
    transition: color 0.3s;
}
.btn-ver-detalles:hover {
    color: var(--color-accent);
}


/* ==================================================================== */
/* 7. ESTILOS PARA SOBRE-NOSOTROS.PHP (Página de Quiénes Somos)         */
/* ==================================================================== */
.info-block {
    background: var(--color-white); 
    border-radius: 12px;
    padding: 2rem;
    margin-bottom: 2rem;
    border-left: 5px solid var(--color-primary); 
}

.block-heading {
    color: var(--color-secondary); 
    font-size: 1.8rem;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px dashed #ccc;
}

.info-block p {
    font-size: 1.1rem;
    line-height: 1.6;
    color: #444;
}

.info-block.objetivo {
    border-left-color: var(--color-accent); 
}

.creadores-perfil {
    display: flex;
    gap: 3rem;
    margin-top: 1.5rem;
    flex-wrap: wrap; 
}

.creador-item {
    text-align: center;
    max-width: 250px;
}

.creador-avatar {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--color-primary); 
    margin-bottom: 0.5rem;
}

.creador-item h4 {
    color: var(--color-primary);
    margin-bottom: 0.3rem;
}
.creador-item p {
    font-size: 0.9rem;
    color: #777;
}

/* ==================================================================== */
/* 8. FOOTER (Pie de página)                                            */
/* ==================================================================== */
.main-footer {
    background-color: var(--color-secondary);
    color: #ccc;
    text-align: center;
    padding: 1rem 0;
    margin-top: 3rem;
    font-size: 0.9rem;
}


/* ==================================================================== */
/* 10. ESTILOS PARA EVENTOS.PHP (Diseño de Lista Completa)              */
/* ==================================================================== */
.eventos-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.evento-item-full {
    display: flex;
    align-items: flex-start;
    background: var(--color-white);
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
    border-left: 5px solid var(--color-primary); 
    transition: box-shadow 0.3s;
}

.evento-item-full:hover {
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.1);
}

.evento-fecha-lg {
    background-color: var(--color-primary);
    color: var(--color-white);
    border-radius: 8px;
    width: 80px;
    min-width: 80px;
    text-align: center;
    padding: 0.8rem 0.5rem;
    line-height: 1.1;
    margin-right: 1.5rem;
    align-self: flex-start;
}

.evento-fecha-lg span {
    font-size: 1rem;
    font-weight: 400;
    display: block;
}

.evento-fecha-lg strong {
    font-size: 2.2rem;
    display: block;
    font-weight: 700;
}

.evento-info-lg {
    flex-grow: 1;
    margin-right: 1rem;
}

.evento-info-lg h3 {
    font-size: 1.6rem;
    color: var(--color-secondary);
    margin-bottom: 0.5rem;
}

.evento-info-lg p {
    color: #555;
    margin-bottom: 1rem;
}

.evento-categoria {
    display: inline-block;
    color: var(--color-white);
    font-weight: 600;
    padding: 0.3rem 0.8rem;
    border-radius: 50px;
    margin-bottom: 0.5rem;
    font-size: 0.85rem;
}

/* Clases de color para los tipos de evento */
.categoria-academico { background-color: #00796b; } 
.categoria-cultural { background-color: #FF7043; } 
.categoria-deportivo { background-color: #5E35B1; } 
.categoria-social { background-color: #00bcd4; } 


.evento-detalles {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    font-size: 0.9rem;
    color: #777;
}

.evento-detalles i {
    margin-right: 0.4rem;
    color: var(--color-accent);
}

.btn-detalles-evento {
    display: block;
    background-color: var(--color-accent);
    color: var(--color-primary);
    padding: 0.7rem 1.2rem;
    border-radius: 50px;
    font-weight: 700;
    text-align: center;
    transition: background-color 0.3s;
}

.btn-detalles-evento:hover {
    background-color: #5dcb00;
}

/* ==================================================================== */
/* 11. ESTILOS PARA LOGIN/REGISTRO/MENSAJES Y PUBLICAR.PHP              */
/* ==================================================================== */

.login-container {
    max-width: 450px;
    margin: 5rem auto 3rem auto;
    padding: 2rem;
    background: var(--color-white);
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    text-align: center;
}

/* Estilos de mensajes (compartidos con publicar.php) */
.message {
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    font-weight: 600;
    text-align: left;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.error-message {
    background-color: #ffebee; 
    color: #c62828; 
    border: 1px solid #ef9a9a;
}

.success-message {
    background-color: #e8f5e9; 
    color: #2e7d32; 
    border: 1px solid #a5d6a7;
}

.message i {
    font-size: 1.2rem;
}

/* Estilos del Formulario de Registro/Login (compartidos) */
.login-container .section-title {
    border-bottom: none;
    padding-bottom: 0;
    margin-bottom: 0.5rem;
}

.login-container .section-description {
    margin-bottom: 2rem;
    color: #666;
}

.login-form {
    text-align: left;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--color-primary);
    font-size: 1rem;
}

.form-group i {
    margin-right: 0.5rem;
    color: var(--color-accent);
}

.form-group input,
.form-group select { /* Añadido SELECT para formularios de eventos/proyectos */
    width: 100%;
    padding: 0.8rem 1rem;
    border: 2px solid #ddd;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus {
    border-color: var(--color-accent);
    outline: none;
}

/* CLAVE: Estilo de validación JS */
.input-error {
    border: 2px solid #E91E63 !important; 
    box-shadow: 0 0 5px rgba(233, 30, 99, 0.5);
}

.btn-login {
    width: 100%;
    background-color: var(--color-primary); 
    color: var(--color-white);
    font-weight: 700;
    padding: 0.8rem;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    font-size: 1.1rem;
    transition: background-color 0.3s, transform 0.1s;
}

.btn-login:hover {
    background-color: var(--color-secondary);
}

.form-actions {
    margin-top: 2rem;
}

.login-help {
    margin-top: 1rem;
    text-align: right;
}

.login-help a {
    color: #888;
    font-size: 0.9rem;
    transition: color 0.3s;
}
.login-help a:hover {
    color: var(--color-accent);
}

.register-link {
    margin-top: 2.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid #eee;
    font-size: 1rem;
}

.register-link span {
    color: #555;
    margin-right: 0.5rem;
}

/* ------------------------------------------- */
/* ESTILOS ESPECÍFICOS DE PUBLICAR/SUBIR */
/* ------------------------------------------- */

.publicar-container {
    max-width: 800px;
    margin: 2rem auto;
    padding: 2rem;
    background: var(--color-white);
    border-radius: 16px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.publicar-form .form-group {
    margin-bottom: 1.5rem;
}

.publicar-form label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--color-primary);
}

.publicar-form input[type="text"],
.publicar-form input[type="url"],
.publicar-form input[type="date"],
.publicar-form input[type="time"],
.publicar-form textarea,
.publicar-form select {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 1rem;
    resize: vertical; 
}

.publicar-form input[type="file"] {
    padding: 0.8rem 0;
    border: none;
}

.btn-publish {
    display: block;
    width: 100%;
    padding: 1rem;
    background-color: var(--color-accent); 
    color: var(--color-primary);
    font-weight: 700;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    font-size: 1.1rem;
    transition: background-color 0.3s, transform 0.1s;
}

.btn-publish:hover {
    background-color: #5dcb00;
    transform: translateY(-2px);
}

.content-type-selector {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 2rem;
    border-bottom: 2px solid #eee;
    padding-bottom: 1rem;
}

.btn-type {
    padding: 0.6rem 1rem;
    border-radius: 50px;
    border: 1px solid var(--color-primary);
    background: var(--color-white);
    color: var(--color-primary);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
}

.btn-type i {
    margin-right: 0.5rem;
}

.btn-type.active,
a.btn-type:hover {
    background-color: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
}

.btn-type.disabled {
    opacity: 0.6;
    cursor: not-allowed;
    background-color: #f0f0f0;
    color: #888;
    border-color: #ddd;
}


/* ==================================================================== */
/* 13. ESTILOS PARA DETALLE_POST.PHP (Detalle de Publicación Completa)  */
/* ==================================================================== */

.detalle-post {
    background: var(--color-white);
    padding: 2rem;
    border-radius: 16px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
    margin-bottom: 2rem;
}

.post-header-full {
    border-bottom: 2px solid #eee;
    padding-bottom: 1.5rem;
    margin-bottom: 1.5rem;
}

.post-author-meta {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.post-avatar-full {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    border: 3px solid var(--color-accent);
}

.author-info h1 {
    font-size: 2.5rem;
    color: var(--color-secondary);
    line-height: 1.1;
    margin-bottom: 0.5rem;
}

.author-info span {
    display: block;
    color: #555;
    font-size: 1rem;
    margin-bottom: 0.3rem;
}

.author-info time {
    display: block;
    color: #888;
    font-size: 0.9rem;
}

.post-image-full {
    width: 100%;
    max-height: 450px;
    object-fit: cover;
    display: block;
    border-radius: 12px;
    margin-bottom: 2rem;
    border: 1px solid #ddd;
}

.post-content-body {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #333;
    padding-bottom: 2rem;
    border-bottom: 1px dashed #ddd;
}

.post-meta-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
    margin-bottom: 2rem;
}

.actions-meta span {
    font-size: 1.1rem;
    font-weight: 600;
    margin-left: 1.5rem;
    color: #555;
}

.actions-meta .fa-heart {
    color: var(--color-like);
}
.actions-meta .fa-comment {
    color: var(--color-primary);
}

/* --- Sección de Comentarios (Base) --- */
.comments-section {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid #eee;
}

.comments-section h2 {
    font-size: 1.8rem;
    color: var(--color-primary);
    margin-bottom: 1.5rem;
    border-bottom: 3px solid var(--color-accent);
    padding-bottom: 0.5rem;
    display: inline-block;
}

/* --- Formulario de Comentarios --- */
.comentario-form-container {
    background: #f8f8f8;
    padding: 1.5rem;
    border-radius: 8px;
    margin-bottom: 2rem;
    border: 1px solid #ddd;
}

.add-comentario-form textarea {
    width: 100%;
    padding: 10px;
    margin-bottom: 1rem;
    border: 1px solid #ccc;
    border-radius: 6px;
    resize: vertical;
    font-size: 1rem;
    box-sizing: border-box;
}

.btn-publish-comment {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: 0.7rem 1.5rem;
    border: none;
    border-radius: 50px;
    font-weight: 700;
    cursor: pointer;
    transition: background-color 0.3s, transform 0.1s;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}
.btn-publish-comment:hover {
    background-color: var(--color-secondary);
}

.login-message-comentarios {
    padding: 1rem;
    background-color: #fff3cd; 
    border: 1px solid #ffeeba;
    color: #856404;
    border-radius: 4px;
    text-align: center;
    font-size: 1rem;
    margin-bottom: 2rem;
}

.login-message-comentarios a {
    color: var(--color-primary);
    font-weight: 700;
}

/* --- Lista de Comentarios --- */
.comentarios-lista {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.comentario-item {
    display: flex;
    gap: 1rem;
    padding: 1rem 0;
    border-bottom: 1px dashed #eee;
}
.comentario-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.comentario-avatar i {
    font-size: 2.5rem;
    color: #999;
}

.comentario-cuerpo {
    flex-grow: 1;
}

.comentario-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
    border-bottom: 1px solid #f1f1f1;
    padding-bottom: 0.3rem;
}

.comentario-meta strong {
    color: var(--color-secondary);
    font-size: 1.1rem;
}

.comentario-fecha {
    font-size: 0.85rem;
    color: #888;
}

.comentario-cuerpo p {
    font-size: 1rem;
    line-height: 1.5;
    color: #333;
    margin: 0;
}

.no-comments-message {
    text-align: center;
    padding: 2rem;
    color: #888;
    font-style: italic;
    background: #fdfdfd;
    border-radius: 8px;
}


/* ==================================================================== */
/* 14. ESTILOS PARA DETALLE_EVENTO.PHP                                  */
/* ==================================================================== */

.detalle-evento-card {
    background: var(--color-white);
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    margin-bottom: 2rem;
    overflow: hidden;
    
    /* 🔑 CLAVES PARA CENTRAR LA TARJETA DEL EVENTO */
    max-width: 850px; /* Define un ancho máximo para la tarjeta */
    margin-left: auto;  /* Centra horizontalmente */
    margin-right: auto; /* Centra horizontalmente */
    margin-bottom: 2rem;
}
.evento-banner {
    width: 100%;
    height: 350px;
    background-size: cover;
    background-position: center;
    position: relative;
    display: flex;
    align-items: flex-end;
}

.evento-tipo-label {
    position: absolute;
    top: 20px;
    left: 20px;
    color: var(--color-white);
    font-size: 1.2rem;
    font-weight: 700;
    padding: 0.5rem 1.2rem;
    border-radius: 50px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
}

.evento-contenido {
    padding: 2rem;
}

.evento-header h1 {
    font-size: 3rem;
    color: var(--color-primary);
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--color-accent);
}

.evento-meta-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    padding: 1.5rem 0;
    border-bottom: 1px dashed #eee;
    margin-bottom: 2rem;
}

.evento-meta-grid div {
    line-height: 1.4;
}

.evento-meta-grid i {
    color: var(--color-accent);
    margin-right: 0.5rem;
    font-size: 1.2rem;
}

.evento-meta-grid strong {
    display: block;
    color: var(--color-secondary);
    font-size: 1.1rem;
    margin-top: 0.2rem;
}

.evento-meta-grid span {
    color: #666;
    font-size: 1rem;
}

.evento-descripcion h2 {
    font-size: 1.8rem;
    color: var(--color-secondary);
    margin-bottom: 1rem;
}

.evento-descripcion p {
    font-size: 1.1rem;
    color: #333;
    line-height: 1.7;
    margin-bottom: 2rem;
}

.evento-footer-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 1.5rem;
    border-top: 1px solid #eee;
}

.evento-footer-meta span {
    color: #777;
    font-size: 0.95rem;
}

.btn-asistir {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: 0.8rem 1.5rem;
    border: none;
    border-radius: 50px;
    font-weight: 700;
    cursor: pointer;
    transition: background-color 0.3s, transform 0.1s;
}
.btn-asistir:hover {
    background-color: var(--color-secondary);
}


/* ==================================================================== */
/* 15. ESTILOS PARA DETALLE_GUIA.PHP                                    */
/* ==================================================================== */

.detalle-guia-card {
    background: var(--color-white);
    padding: 3rem;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    margin-bottom: 2rem;

    /* 🔑 CLAVES PARA CENTRAR LA TARJETA DEL EVENTO */
    max-width: 850px; /* Define un ancho máximo para la tarjeta */
    margin-left: auto;  /* Centra horizontalmente */
    margin-right: auto; /* Centra horizontalmente */
    margin-bottom: 2rem;

    

}

.guia-header-full {
    border-bottom: 2px solid var(--color-primary);
    padding-bottom: 1.5rem;
    margin-bottom: 2rem;
}

.guia-header-full h1 {
    font-size: 2.8rem;
    color: var(--color-secondary);
    line-height: 1.1;
    margin-top: 0.5rem;
    margin-bottom: 1rem;
}

.guia-header-full .guia-materia {
    font-size: 1rem;
    padding: 0.4rem 1rem;
}

.guia-meta-full span {
    display: block;
    color: #666;
    font-size: 0.95rem;
    margin-bottom: 0.5rem;
}

.guia-meta-full i {
    color: var(--color-accent);
    margin-right: 0.5rem;
}

.guia-contenido-body h2 {
    font-size: 1.8rem;
    color: var(--color-primary);
    margin-top: 2rem;
    margin-bottom: 1rem;
    border-left: 5px solid var(--color-accent);
    padding-left: 1rem;
}

.guia-contenido-body p {
    font-size: 1.1rem;
    line-height: 1.7;
    margin-bottom: 2rem;
}

.guia-divider {
    border: 0;
    height: 1px;
    background-image: linear-gradient(to right, rgba(0, 0, 0, 0), var(--color-accent), rgba(0, 0, 0, 0));
    margin: 2rem 0;
}

/* --- Download Box --- */
.guia-download-box {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: #e8f5e9; 
    border: 2px solid var(--color-accent);
    border-radius: 12px;
    padding: 1.5rem;
}

.guia-download-box .file-info {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.file-icon {
    font-size: 3rem;
    color: #c62828; /* Rojo PDF */
}

.file-meta strong {
    font-size: 1.2rem;
    color: var(--color-secondary);
    display: block;
}

.file-meta span {
    color: #777;
    font-size: 0.9rem;
}

.btn-descarga-lg {
    background-color: var(--color-accent);
    color: var(--color-primary);
    font-weight: 700;
    padding: 1rem 2rem;
    border-radius: 50px;
    transition: background-color 0.3s, transform 0.1s;
    display: inline-flex;
    align-items: center;
    gap: 0.7rem;
}
.btn-descarga-lg:hover {
    background-color: #5dcb00;
    transform: translateY(-2px);
}

.descargas-count {
    display: block;
    text-align: center;
    color: #888;
    font-size: 0.85rem;
    margin-top: 0.5rem;
}


/* ==================================================================== */
/* 17. ESTILOS PARA DETALLE_PROYECTO.PHP                                */
/* ==================================================================== */

.detalle-proyecto-card {
    background: var(--color-white);
    padding: 3rem;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    margin-bottom: 2rem;

    /* 🔑 CLAVES PARA CENTRAR LA TARJETA DEL EVENTO */
    max-width: 850px; /* Define un ancho máximo para la tarjeta */
    margin-left: auto;  /* Centra horizontalmente */
    margin-right: auto; /* Centra horizontalmente */
    margin-bottom: 2rem;
}

.proyecto-header-full {
    border-bottom: 2px solid var(--color-accent);
    padding-bottom: 1.5rem;
    margin-bottom: 2rem;
}

.proyecto-header-full h1 {
    font-size: 3.2rem;
    color: var(--color-secondary);
    line-height: 1.1;
    margin-top: 0.5rem;
    margin-bottom: 1rem;
}

.proyecto-carrera {
    display: inline-block;
    background-color: var(--color-primary); 
    color: var(--color-white);
    font-weight: 700;
    padding: 0.4rem 1rem;
    border-radius: 50px;
    font-size: 1rem;
}

.proyecto-meta-full {
    display: flex;
    gap: 1.5rem;
    font-size: 0.95rem;
    color: #666;
    margin-top: 0.8rem;
}

.proyecto-meta-full i {
    color: var(--color-accent);
    margin-right: 0.4rem;
}

.proyecto-imagen-destacada {
    width: 100%;
    max-height: 500px;
    object-fit: cover;
    border-radius: 12px;
    margin-bottom: 2rem;
    border: 1px solid #ddd;
}

.proyecto-contenido-body {
    font-size: 1.1rem;
    line-height: 1.7;
    color: #333;
    margin-bottom: 3rem;
}

.proyecto-contenido-body h2 {
    font-size: 1.8rem;
    color: var(--color-primary);
    margin-top: 2rem;
    margin-bottom: 0.8rem;
}

.autores-list {
    background-color: #f0f8ff; /* Azul muy claro para destacar */
    padding: 1rem 1.5rem;
    border-radius: 8px;
    border-left: 5px solid #007bff;
    font-size: 1.1rem;
}

/* --- Footer de Acciones (Votos/Repo) --- */
.proyecto-footer-actions {
    display: flex;
    justify-content: flex-start;
    gap: 1.5rem;
    padding-top: 2rem;
    border-top: 1px dashed #eee;
    margin-top: 3rem;
}

.btn-like-proyecto, .btn-repo {
    padding: 0.8rem 1.5rem;
    border-radius: 50px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s, transform 0.1s;
    display: inline-flex;
    align-items: center;
    gap: 0.7rem;
    border: none;
}

.btn-like-proyecto {
    background-color: var(--color-like);
    color: var(--color-white);
}
.btn-like-proyecto:hover {
    background-color: #c2185b;
    transform: translateY(-2px);
}

.btn-repo {
    background-color: #333; /* Gris oscuro para GitHub */
    color: var(--color-white);
}
.btn-repo:hover {
    background-color: #555;
    transform: translateY(-2px);
}


/* ==================================================================== */
/* 18. INTERACTIVIDAD Y UTILITIES (Añadidas para el JS)                 */
/* ==================================================================== */

/* 1. Scroll to Top Button */
.scroll-to-top-btn {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background-color: var(--color-primary); 
    color: white;
    border: none;
    border-radius: 50%;
    width: 45px;
    height: 45px;
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0; 
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s, transform 0.1s;
    z-index: 99;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}

.scroll-to-top-btn.show {
    opacity: 1;
    visibility: visible;
}

.scroll-to-top-btn:hover {
    background-color: var(--color-secondary);
    transform: translateY(-2px);
}

/* 2. Validación de Formularios (JS-driven error class) */
.input-error {
    border: 2px solid #E91E63 !important; 
    box-shadow: 0 0 5px rgba(233, 30, 99, 0.5);
}

/* Estilo base del botón de asistir (usado para confirmar) */
.btn-asistir {
    /* Manten tus estilos de padding, border-radius, font-size, etc. */
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-weight: bold;
    text-decoration: none; /* Si usas 'a' como botón */
    transition: background-color 0.3s ease;
    margin-left: auto; /* Para alinearlo a la derecha, si aplica */
}

.btn-confirmar {
    background-color: #28a745; /* Verde */
    color: white;
}

.btn-confirmar:hover {
    background-color: #218838;
}

/* NUEVO ESTILO: Para cuando el usuario ya confirmó y quiere cancelar */
.btn-cancelar {
    background-color: #dc3545; /* Rojo */
    color: white;
}

.btn-cancelar:hover {
    background-color: #c82333;
}

/* Opcional: Estilo para mostrar el conteo de asistentes */
.attendance-info {
    font-size: 1em;
    color: #6c757d;
    margin-right: 20px;
    display: flex;
    align-items: center;
    gap: 5px;
}
.attendance-info strong {
    font-size: 1.2em;
    color: #343a40;
}

/* Asegura que todos los elementos estén bien alineados en el footer-meta */
.evento-footer-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 15px;
    border-top: 1px solid #eee;
    margin-top: 15px;
}


/* OVERLAY: Cubre toda la pantalla y centra el modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7); /* Fondo oscuro semitransparente */
    display: flex; /* Para centrar el contenido */
    justify-content: center;
    align-items: center;
    z-index: 1000; /* Asegura que esté encima de todo (incluyendo el header) */
    /* CLAVE: Oculto por defecto, se muestra con JavaScript */
    visibility: hidden; 
    opacity: 0;
    transition: opacity 0.3s, visibility 0.3s;
}

/* Modal visible (añadido por JavaScript) */
.modal-overlay.show {
    visibility: visible;
    opacity: 1;
}

/* Contenido del modal */
.modal-content {
    background: var(--color-white);
    padding: 30px;
    border-radius: 12px;
    max-width: 500px;
    text-align: center;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
}

.modal-content h2 {
    color: var(--color-primary);
    margin-bottom: 15px;
    border-bottom: 2px solid var(--color-accent);
    padding-bottom: 5px;
}

.policy-scroll {
    max-height: 200px;
    overflow-y: auto;
    padding: 10px;
    margin-bottom: 20px;
    border: 1px solid #eee;
    text-align: left;
    font-size: 0.9em;
}

#accept-policy-btn {
    margin-top: 15px;
}





/* ==================================================================== */
/* 19. MEDIA QUERIES (RESPONSIVE DESIGN FINAL)                          */
/* ==================================================================== */

/* * Breakpoint 1: Pantallas Medianas (Ancho máximo: 1200px) 
 * --- OBJETIVO: Ocultar texto de nav ANTES de que se rompa el layout. ---
 */
@media (max-width: 1200px) {
    .main-nav a .nav-text {
        display: none; /* Oculta el texto, deja solo iconos */
    }
    .main-nav ul {
        justify-content: flex-start; /* Mantiene iconos a la izquierda */
        gap: 0.5rem;
    }
    .logo-container h1 {
        font-size: 1.3rem; /* Encoge un poco el título */
    }
}


/* * Breakpoint 2: Tabletas (Ancho máximo: 1024px) 
 * --- OBJETIVO: Mover la sidebar ARRIBA. ---
 */
@media (max-width: 1024px) {
    
    /* * Las reglas de navegación (.main-nav a .nav-text { display: none; }) 
     * ya fueron aplicadas por el breakpoint de 1200px.
     */

    /* LAYOUT GENERAL: Ajustar container y sidebar */
    .container {
        flex-direction: column; 
        gap: 1rem; 
        margin: 1rem auto;
        width: 95%; /* Usar un ancho de 95% */
    }

    aside.sidebar {
        /* --- ESTE ES EL CAMBIO CLAVE --- */
        order: -1; /* Mueve la sidebar al INICIO */
        position: relative; 
        top: 0; 
        min-width: 100%; 
        margin-top: 0; /* Ya no necesita margen superior */
        margin-bottom: 1.5rem; /* Añade espacio debajo, antes del feed */
    }
}


/* * Breakpoint 3: Móviles (Ancho máximo: 600px)
 * --- OBJETIVO: Header en una línea, nav scrollable. ---
 */
/* * Breakpoint 3: Móviles (Ancho máximo: 600px)
 * --- OBJETIVO: Header en una línea, nav scrollable. ---
 */
@media (max-width: 600px) {

    /* 1. ENCABEZADO: Una sola línea */
    .main-header {
        padding: 0.5rem 1rem; /* Menos padding vertical */
    }
    
    .logo-container h1 {
        display: none; /* Oculta "Conexión CECYTEM", deja solo el logo-img */
    }

    .main-nav {
        margin: 0 0.5rem; /* Reduce el margen entre logo y botones */
    }
    
    /* 2. NAVEGACIÓN (Deslizable horizontalmente) */
    .main-nav ul {
        display: flex;
        justify-content: flex-start; /* Alinear al inicio */
        overflow-x: auto;  /* ¡La clave! Permite scroll horizontal */
        white-space: nowrap; /* Evita que los iconos se envuelvan */
        padding-bottom: 5px; /* Espacio para la barra de scroll */
        gap: 0.5rem;
    }
    
    .main-nav li {
        flex-shrink: 0; /* Evita que los items se encojan */
    }
    
    .main-nav a {
        flex-direction: column; /* Icono arriba, (texto oculto) abajo */
        gap: 0.2rem;
        padding: 5px 12px;
    }

    .main-nav a i {
        font-size: 1.3rem; 
    }
    
    /* 3. BOTÓN PUBLICAR: Convertir en icono '+' */
    .btn-publicar {
        padding: 0;
        width: 40px; /* Tamaño de botón de icono */
        height: 40px;
        font-size: 1.1rem; /* Tamaño de icono */
        
        /* Ocultar texto "Publicar" */
        text-indent: -9999px;
        overflow: hidden;
        position: relative;
    }
    
    /* Añadir el icono '+' usando CSS */
    .btn-publicar::before {
        content: '\f067'; /* Código de FontAwesome para el icono PLUS */
        font-family: "Font Awesome 5 Free";
        font-weight: 900;
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        text-indent: 0; /* Resetea el indent para el pseudo-elemento */
    }

    /* 4. AJUSTES DE LAYOUT GENERAL (Heredados/re-definidos) */
    .container {
         margin-top: 1rem;
         padding: 0 0.5rem;
         width: 100%; /* Ocupar todo el ancho en móvil */
    }
    
    .post-grid {
         grid-template-columns: 1fr;
    }
    
    /* Filtros: botones apilados */
    .filter-controls {
        flex-direction: column;
        gap: 10px;
    }
    .btn-filter, .btn-filter-clear {
        width: 100%;
    }
    
    /* 5. DETALLES DE PÁGINAS RESPONSIVOS */
    .detalle-post { padding: 1rem; }
    .author-info h1 { font-size: 1.8rem; }
    .post-author-meta { flex-direction: column; align-items: flex-start; }
    .post-avatar-full { margin-bottom: 0.5rem; }
    .post-meta-footer { flex-direction: column; align-items: flex-start; gap: 1rem; }
    .comentario-meta { flex-direction: column; align-items: flex-start; }
    
    .evento-banner { height: 150px; }
    .evento-header h1 { font-size: 2rem; }
    .evento-meta-grid { grid-template-columns: 1fr; }
    .evento-footer-meta { flex-direction: column; gap: 1rem; align-items: flex-start; }
    .btn-asistir { width: 100%; text-align: center; }
    
    .detalle-guia-card { padding: 1.5rem; }
    .guia-header-full h1 { font-size: 2rem; }
    .guia-download-box { flex-direction: column; align-items: flex-start; gap: 1.5rem; }
    .btn-descarga-lg { width: 100%; justify-content: center; }
    
    .detalle-proyecto-card { padding: 1.5rem; }
    .proyecto-header-full h1 { font-size: 2rem; }
    .proyecto-footer-actions { flex-direction: column; }
    .btn-like-proyecto, .btn-repo { width: 100%; justify-content: center; }
    
    .guia-card { flex-direction: column; align-items: flex-start; padding: 1rem; }
    .guia-acciones { width: 100%; margin-top: 1rem; align-items: center; }
    .btn-descarga { width: 80%; }
    
    .evento-item-full { flex-direction: column; align-items: center; text-align: center; }
    .evento-fecha-lg { margin: 0 0 1rem 0; }
    .btn-detalles-evento { width: 100%; margin-top: 1rem; }
    
    .login-container { 
        margin: 2rem auto; 
        width: 95%;
    }

    /* --- FIX: Política de Privacidad (Asegura que el botón diga 'Aceptar') --- */
    .modal-content #accept-policy-btn {
        /* 1. Resetear el comportamiento de ícono */
        text-indent: 0; 
        overflow: visible; 
        width: 100%; 
        height: auto;
        position: relative;
    }

    /* 2. Eliminar el pseudo-elemento que crea el ícono '+' */
    .modal-content #accept-policy-btn::before {
        content: none;
    }
    /* ----------------------------------------------------------------------- */
}

/* ==================================================================== */
/* 20. ESTILOS DE SCROLL WIDGETS (FINAL)                              */
/* ==================================================================== */

.emociones-lista-scroll,
.eventos-lista-scroll {
    overflow-y: auto; /* Activa el scroll vertical */
    
    /* --- Ocultar barra de scroll (Cross-browser) --- */
    scrollbar-width: none;    /* Firefox */
    -ms-overflow-style: none; /* IE y Edge */
}

/* Ocultar barra de scroll (Chrome, Safari, Edge) */
.emociones-lista-scroll::-webkit-scrollbar,
.eventos-lista-scroll::-webkit-scrollbar {
    display: none;
}

/* --- Alturas máximas (aprox. 3 items) --- */
.emociones-lista-scroll {
    max-height: 300px; /* Altura para ~3 burbujas de emoción */
}

.eventos-lista-scroll {
    max-height: 250px; /* Altura para ~3 items de evento */
}

/* ==================================================================== */
/* 21. TÍTULOS DE SECCIÓN CENTRADOS (Final FIX)                       */
/* ==================================================================== */

/* Esta regla centra tanto el título (H2) como la descripción (P) */
.main-content .section-title,
.main-content .section-description {
    /* CLAVE 1: Centra el bloque entero (si tiene un ancho definido) */
    margin-left: auto;
    margin-right: auto;
    max-width: 800px;
    
    /* CLAVE 2: Centra el texto DENTRO de esos bloques con alta prioridad */
    text-align: center !important; 
}

/* Esta regla asegura que la línea de abajo del título se ajuste al texto centrado */
.main-content .section-title {
    width: fit-content;
}