/* ==========================================================================
   1. VARIABLES GLOBALES Y TEMA
   ========================================================================== */
:root {
    /* Paleta de Colores */
    --primary-bg: #4A5568;      /* Gris azulado oscuro (para headers, botones primarios) */
    --secondary-bg: #2D3748;    /* Gris más oscuro (para la toolbar) */
    --accent-bg: #F7FAFC;       /* Fondo principal muy claro */
    --surface-bg: #FFFFFF;     /* Fondo para tarjetas, modales, etc. */
    --interactive-accent: #3b82f6; /* Azul para links, focus rings, etc. */

    /* Colores de Texto */
    --text-light: #FFFFFF;
    --text-dark: #2D3748;
    --text-muted: #718096;      /* Para placeholders y texto secundario */

    /* Bordes */
    --border-color: #E2E8F0;    /* Borde sutil para tarjetas y separadores */
    --border-color-input: #D1D5DB;

    /* Propiedades de UI */
    --font-family: 'Inter', sans-serif; /* Fuente moderna y legible */
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 12px;
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --transition-fast: all 0.2s ease-in-out;
}

/* ==========================================================================
   2. RESETEO BÁSICO Y ESTILOS GLOBALES
   ========================================================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    background-color: var(--accent-bg);
    color: var(--text-dark);
    line-height: 1.6;
}

a {
    color: var(--interactive-accent);
    text-decoration: none;
    transition: var(--transition-fast);
}

a:hover {
    text-decoration: underline;
}

/* ==========================================================================
   3. ESTRUCTURA PRINCIPAL (LAYOUT)
   ========================================================================== */
#app-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
}

.main-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--primary-bg);
    color: var(--text-light);
    padding: 1rem 1.5rem;
    box-shadow: var(--shadow-md);
    z-index: 10;
}

.toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--secondary-bg);
    color: var(--text-light);
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.main-content {
    flex-grow: 1;
    padding: 2rem;
    overflow-y: auto;
}

.app-footer {
    flex-shrink: 0; /* Evita que el footer se encoja */
    padding: 1.5rem;
    background-color: var(--secondary-bg); /* Fondo oscuro para contraste */
    color: var(--text-muted);
    border-top: 1px solid var(--primary-bg);
}

.footer-content {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    font-size: 0.9rem;
}

.footer-logo {
    height: 24px; /* Un tamaño discreto para el footer */
    opacity: 0.7; /* El logo se ve un poco más sutil */
}

/* ==========================================================================
   4. COMPONENTES REUTILIZABLES
   ========================================================================== */

/* --- Tarjetas (Cards) --- */
.card {
    background-color: var(--surface-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    margin-bottom: 1.5rem;
    overflow: hidden; /* Para que el border-radius afecte a los hijos */
}

.card-header {
    padding: 1rem 1.5rem;
    background-color: var(--accent-bg);
    border-bottom: 1px solid var(--border-color);
}

.card-footer {
    padding: 1rem 1.5rem;
    background-color: var(--accent-bg);
    border-top: 1px solid var(--border-color);
}

.card-header h3 {
    margin: 0;
    font-size: 1.1rem;
    font-weight: 600;
}

.card-body {
    padding: 1.5rem;
}

/* --- Botones --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.6rem 1.2rem;
    font-size: 0.9rem;
    font-weight: 600;
    border-radius: var(--border-radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    text-decoration: none;
    transition: var(--transition-fast);
    white-space: nowrap;
}

.btn i {
    font-size: 1.1em; /* El icono se adapta al tamaño de la fuente */
}

/* Variante Primaria (para acciones principales) */
.btn-primary {
    background-color: var(--primary-bg);
    color: var(--text-light);
    border-color: var(--primary-bg);
}
.btn-primary:hover {
    background-color: var(--secondary-bg);
    border-color: var(--secondary-bg);
}

/* Variante Secundaria (para acciones secundarias) */
.btn-secondary {
    background-color: var(--accent-bg);
    color: var(--text-dark);
    border-color: var(--border-color-input);
}
.btn-secondary:hover {
    background-color: #eef2ff; /* Un toque de color sutil */
    border-color: #c7d2fe;
}

/* Variante Outline para fondos oscuros */
.btn-outline-light {
    background-color: transparent;
    color: var(--text-light);
    border-color: var(--text-light);
}
.btn-outline-light:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: var(--text-light);
}

/* Variante Fantasma (para acciones discretas como logout, clear) */
.btn-ghost {
    background-color: transparent;
    color: var(--text-dark);
    border-color: transparent;
}
.btn-ghost:hover {
    background-color: rgba(0, 0, 0, 0.05);
}
.btn-ghost.light { /* Para fondos oscuros */
    color: var(--text-light);
}
.btn-ghost.light:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

/* Variante de Peligro */
.btn-danger {
    background-color: #fee2e2;
    color: #b91c1c;
    border-color: #fecaca;
}
.btn-danger:hover {
    background-color: #fecaca;
    border-color: #f87171;
}

/* --- Formularios --- */
.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.form-control {
    width: 100%;
    padding: 0.7rem 0.9rem;
    font-family: var(--font-family); /* Asegura que los inputs usen la fuente global */
    font-size: 0.9rem;
    border: 1px solid var(--border-color-input);
    border-radius: var(--border-radius-md);
    outline: none;
    background-color: var(--surface-bg);
    color: var(--text-dark);
    transition: var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--interactive-accent);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

/* Estilo para la cuadrícula de formularios (usado en create y edit) */
.form-grid {
    display: grid;
    /* Crea 2 columnas en pantallas anchas, 1 en estrechas */
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 0 2rem; /* Espacio horizontal entre columnas, sin espacio vertical */
}

/* --- Tablas --- */
.table-container {
    width: 100%;
    overflow-x: auto;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
}

.table-custom {
    width: 100%;
    border-collapse: collapse;
}

.table-custom th,
.table-custom td {
    padding: 1rem;
    text-align: left;
    vertical-align: middle;
}

.table-custom thead th {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    background-color: var(--accent-bg);
    border-bottom: 2px solid var(--border-color);
}

.table-custom thead th a {
    color: inherit; /* Hereda el color del th (var(--text-muted)) */
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition-fast);
}
.table-custom thead th a:hover {
    color: var(--text-dark); /* Se oscurece al pasar el ratón */
    text-decoration: none;
}

.table-custom tbody tr {
    border-bottom: 1px solid var(--border-color);
}
.table-custom tbody tr:last-child {
    border-bottom: none;
}

.table-custom tbody tr:hover {
    background-color: var(--accent-bg);
}

/* Estilo para resaltar filas con comentarios no leídos */
.table-custom tbody tr.has-unread {
    background-color: rgba(59, 130, 246, 0.08); /* Azul muy claro, derivado de --interactive-accent */
    font-weight: 600;
}

.table-custom tbody tr.has-unread:hover {
    background-color: rgba(59, 130, 246, 0.15); /* Un poco más oscuro al pasar el ratón */
}


.table-custom .action-btn {
    color: var(--text-muted);
}
.table-custom .action-btn:hover {
    color: var(--text-dark);
}

/* ==========================================================================
   5. ELEMENTOS ESPECÍFICOS DE LA APLICACIÓN
   ========================================================================== */

/* --- Encabezado --- */
.logo-container {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}
.logo-container h1 {
    font-size: 1.2rem;
    font-weight: 600;
}

.header-user-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}
.user-profile {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
}
.user-profile i {
    font-size: 1.4rem;
}

/* --- Barra de Herramientas (Toolbar) --- */
.toolbar h2 {
    font-size: 1.5rem;
    font-weight: 700;
}

.toolbar-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.search-wrapper {
    display: flex;
    align-items: center;
    background-color: var(--primary-bg);
    padding: 0.5rem 0.75rem;
    border-radius: var(--border-radius-md);
}
.search-wrapper input {
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-light);
    margin-left: 0.5rem;
    width: 200px;
}
.toolbar-title {
    display: flex;
    align-items: center;
    gap: 1rem;
}
.toolbar-title .title-text {
    display: flex;
    flex-direction: column;
}
.toolbar-title h2 {
    margin: 0;
}
.toolbar-title .subtitle {
    margin: 0;
    font-size: 0.85rem;
    color: var(--text-muted);
}
/* Asegura que los botones dentro del toolbar tengan el color correcto */
.toolbar .btn {
    color: var(--text-light);
}

.search-wrapper input::placeholder {
    color: var(--text-muted);
}

/* --- Menú de Filtros --- */
.filter-dropdown {
    position: relative;
}
.filter-menu {
    display: none;
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    background-color: var(--surface-bg);
    min-width: 280px;
    box-shadow: var(--shadow-md);
    z-index: 100;
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    padding: 1.5rem;
}
.filter-menu.show {
    display: block;
}
.filter-actions {
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    margin-top: 1rem;
}

/*
   FIX: Botón "Limpiar" en el menú de filtros.
   El estilo .btn-ghost es demasiado sutil para el fondo blanco del menú.
   Lo forzamos a que se parezca a un .btn-secondary para que sea visible.
*/
.filter-menu .btn-ghost {
    color: var(--text-dark);
    border-color: var(--border-color-input);
}
.filter-menu .btn-ghost:hover {
    background-color: #eef2ff; /* Mismo hover que .btn-secondary */
}

/* --- Tarjeta de Detalles del Ticket --- */
.ticket-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem 2rem;
}

.ticket-attribute label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    margin-bottom: 0.25rem;
    display: block;
}
.ticket-attribute span {
    font-size: 1rem;
    font-weight: 500;
    display: block; /* Asegura que el valor siempre esté en una nueva línea debajo de la etiqueta */

}
.ticket-attribute span.empty {
    color: var(--text-muted);
    font-style: italic;
}


/* --- Sección de Documentos --- */
.document-scroll-container {
    display: flex;
    overflow-x: auto;
    padding-bottom: 1rem;
    gap: 1.5rem;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
    scrollbar-color: var(--border-color-input) var(--accent-bg);
}
.document-card {
    flex: 0 0 280px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    overflow: hidden;
    background-color: var(--surface-bg);
    box-shadow: none;
}
.document-preview {
    height: 200px;
    background-color: var(--accent-bg);
    display: flex;
    align-items: center;
    justify-content: center;
}
.document-info {
    padding: 1rem;
    border-top: 1px solid var(--border-color);
}
.document-title {
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 0.5rem;
}


/* --- Paginación --- */
.pagination {
    margin-top: 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
}
.page-info {
    font-size: 0.9rem;
    color: var(--text-muted);
}
.page-nav-links {
    display: flex;
    gap: 0.5rem;
}


/* --- Página de Login --- */
.login-container {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-grow: 1;
    padding: 2rem;
}

.login-box {
    width: 100%;
    max-width: 420px;
    text-align: center;
}

.login-box .card-body {
    padding: 2.5rem;
}

.login-header h2 {
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
}
.login-header p {
    color: var(--text-muted);
    margin-bottom: 2rem;
}
.login-box .form-group {
    text-align: left;
}
.login-box .btn {
    width: 100%;
    margin-top: 1rem;
}

/* --- Sección de Comentarios --- */
.comment-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.comment-item {
    display: flex;
    gap: 1rem;
    padding: 1.25rem 0;
    border-bottom: 1px solid var(--border-color);
}
.comment-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}
.comment-item:first-child {
    padding-top: 0;
}

.comment-avatar {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    border-radius: var(--border-radius-md);
    background-color: #718096; /* Un gris intermedio para el avatar */
    color: var(--text-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 1rem;
}

.comment-content {
    flex-grow: 1;
}

.comment-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 0.5rem;
    background-color: var(--accent-bg);
    padding: 0.75rem 1rem;
    border-radius: var(--border-radius-md);
}
.comment-author {
    font-weight: 600;
}
.comment-date {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.comment-body {
    font-size: 0.95rem;
    line-height: 1.7;
    padding: 0.75rem 1rem 0 1rem; /* Añadimos padding para separar del header */
}

.comment-attachments {
    margin-top: 1rem;
    font-size: 0.9rem;
}
.comment-attachments ul {
    list-style: none;
    padding-left: 0;
    margin-top: 0.5rem;
}

/* --- Layout de la página de detalle del ticket --- */
.detail-layout {
    display: flex;
    flex-wrap: wrap; /* Permite que las columnas se apilen en pantallas pequeñas */
    gap: 2rem;
    align-items: flex-start;
}

.detail-layout-main {
    flex: 2; /* Ocupa 2/3 del espacio */
    min-width: 320px; /* Ancho mínimo para evitar que se comprima demasiado */
}

.detail-layout-sidebar {
    flex: 1; /* Ocupa 1/3 del espacio */
    min-width: 320px;
    /* Hacemos que la barra lateral sea "pegajosa" */
    position: sticky;
    top: 0; /* Se alinea con la parte superior para que coincida con el contenido principal */
}

/* Ajustes para la tarjeta de comentarios dentro de la barra lateral */
.comments-card {
    height: calc(100vh - 180px); /* Altura calculada para llenar el espacio vertical */
    display: flex;
    flex-direction: column;
}
.comments-card .card-body {
    flex-grow: 1; /* Permite que el cuerpo de la tarjeta crezca */
    overflow-y: auto; /* Habilita el scroll vertical cuando el contenido excede la altura */
}

/* ==========================================================================
   6. DISEÑO RESPONSIVO
   ========================================================================== */
@media (max-width: 768px) {
    .toolbar {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    .toolbar-actions {
        width: 100%;
        flex-direction: column;
        align-items: stretch;
    }
    .search-wrapper input {
        width: 100%;
    }
    .main-content {
        padding: 1.5rem;
    }
}

/* --- Lista de Documentos en la página de Edición --- */
.document-list-edit {
    list-style: none;
    padding: 0;
    margin: 0;
}

.document-item-edit {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
}

.document-item-edit:last-child {
    border-bottom: none;
}

.doc-preview-thumb {
    flex-shrink: 0;
    width: 80px;
    height: 60px;
    background-color: var(--accent-bg);
    border-radius: var(--border-radius-md);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.doc-preview-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover; /* Esto es clave: la imagen cubre el contenedor sin deformarse */
}

.doc-preview-thumb i {
    font-size: 2rem;
    color: var(--text-muted);
}

.doc-name {
    flex-grow: 1; /* Ocupa el espacio restante */
    font-weight: 500;
    color: var(--text-dark);
}

.doc-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.doc-actions .btn-delete {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
}

@media (max-width: 1024px) {
    /* En pantallas más pequeñas, la barra lateral deja de ser pegajosa y se apila */
    .detail-layout-sidebar {
        position: static;
        width: 100%;
    }
}