/* ========================================= */
/* === DEFINICIÓN DE COLORES CORPORATIVOS === */
/* ========================================= */
:root {
    --color-azul-principal: #0F2027;  /* Fondo Sidebar */
    --color-azul-oscuro: #203A43;     /* Gradiente Sidebar */
    --color-naranja-acento: #F37321;  /* Color Institucional */
    --color-gris-texto: #2C3E50;
    --color-gris-texto-hover: #1a2531;
    --color-blanco: #FFFFFF;
    --color-fondo-body: #f4f6f9;
    --color-nav-header: #aeb9bf;
    --color-borde-suave: #ccc;
    --shadow-suave: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-card-hover: 0 6px 12px rgba(0,0,0,0.15);
    --shadow-btn-primary: 0 2px 4px rgba(44, 62, 80, 0.3);
    --shadow-sidebar: 4px 0 10px rgba(0,0,0,0.2);
    --shadow-nav: 0 2px 4px rgba(0,0,0,.08);
}

/* =================================== */
/* === MEJORAS GENERALES UI/UX === */
/* =================================== */

body {
    font-family: 'Source Sans Pro', sans-serif;
    background-color: var(--color-fondo-body);
}

/* Sombra suave para la barra de navegación superior */
.main-header {
    border-bottom: none;
    box-shadow: var(--shadow-nav) !important;
}

/* --- SIDEBAR (Barra Lateral) --- */
.main-sidebar {
    background: linear-gradient(180deg, var(--color-azul-principal) 0%, var(--color-azul-oscuro) 100%);
    box-shadow: var(--shadow-sidebar) !important;
}

.brand-link {
    border-bottom: 1px solid rgba(255,255,255,0.1) !important;
}

/* Icono Genérico de Usuario (Reemplazo de imagen) */
.user-icon-wrapper {
    width: 35px;
    height: 35px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: var(--color-blanco);
    font-size: 1.4rem;
    transition: all 0.3s ease;
}

.user-panel:hover .user-icon-wrapper {
    background-color: var(--color-naranja-acento);
    transform: scale(1.1);
}

/* Enlaces del Sidebar */
.nav-sidebar .nav-item .nav-link {
    border-radius: 4px;
    transition: background-color 0.2s, color 0.2s;
}

/* Estado Activo en Sidebar */
.nav-sidebar .nav-link.active {
    background-color: var(--color-naranja-acento) !important;
    color: white !important;
    box-shadow: 0 4px 6px rgba(243, 115, 33, 0.4);
    font-weight: bold;
}

.nav-sidebar .nav-link:hover:not(.active) {
    background-color: rgba(255,255,255,0.1);
    color: var(--color-blanco);
}

/* Encabezados de sección en Sidebar */
.nav-header {
    color: var(--color-nav-header) !important;
    padding-left: 1rem;
    font-size: 0.8rem;
}

/* --- TARJETAS Y CONTENIDO --- */
.card {
    border: none;
    border-radius: 8px;
    box-shadow: var(--shadow-suave);
    transition: transform 0.2s;
}

/* Efecto hover sutil en tarjetas del dashboard */
.small-box:hover, .card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-card-hover);
}

/* Botones Primarios */
.btn-primary {
    background-color: var(--color-gris-texto);
    border-color: var(--color-gris-texto);
    box-shadow: var(--shadow-btn-primary);
}

.btn-primary:hover {
    background-color: var(--color-gris-texto-hover);
    border-color: var(--color-gris-texto-hover);
}

/* =================================== */
/* === PÁGINA DE LOGIN Y EXTRAS === */
/* =================================== */
.logo-img {
    max-width: 100%;
    height: auto;
    margin-bottom: 1.5rem;
    display: block;
    transition: transform 0.3s ease;
}
.logo-img:hover {
    transform: scale(1.05);
    cursor: pointer;
}

/* Estilos de Firma */
.signature-pad {
    border: 2px dashed var(--color-borde-suave);
    border-radius: 8px;
    background-color: var(--color-blanco);
}
.signature-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
}

/* =================================== */
/* === CLASES DE UTILIDAD (evitar inline) === */
/* =================================== */
.hidden {
    display: none !important;
}

/* Spinner del botón de asistencia: visible como inline-block cuando no está oculto */
#btn-spinner:not(.hidden) {
    display: inline-block;
}

.brand-logo-img {
    opacity: 0.9;
    background: var(--color-blanco);
}

.logo-img-thanks {
    max-height: 80px;
}

.message-feedback {
    display: none;
}
.message-feedback.visible {
    display: block;
}

.text-small {
    font-size: 0.75rem;
}

/* Contenedor con scroll (ej. contenido existente) */
.contenido-scroll {
    max-height: 500px;
    overflow-y: auto;
}

/* Iframe sin borde (previsualización PDF) */
.preview-pdf-iframe {
    border: none;
}

/* Tabla de compromisos en gestión de contenido / firma acta */
.tabla-compromisos {
    font-size: 0.9em;
}
.btn-remover-compromiso {
    width: 100%;
}
/* Fila de datos del acta (fecha, lugar, etc.) */
.acta-meta-row {
    font-size: 0.95em;
}

/* Modal overlay (páginas públicas) */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1050;
}
.modal-overlay .modal-content {
    background: var(--color-blanco);
    border-radius: 8px;
    max-width: 90%;
    box-shadow: var(--shadow-card-hover);
}
.modal-overlay .modal-header {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--color-borde-suave);
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.modal-overlay .modal-body {
    padding: 1.25rem;
}
.modal-overlay .modal-footer {
    padding: 1rem 1.25rem;
    border-top: 1px solid var(--color-borde-suave);
}
.modal-overlay .modal-close {
    cursor: pointer;
    font-size: 1.5rem;
    line-height: 1;
    color: var(--color-gris-texto);
}
.modal-overlay .btn-modal {
    background: var(--color-gris-texto);
    color: var(--color-blanco);
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    cursor: pointer;
}
.modal-overlay .btn-modal:hover {
    background: var(--color-gris-texto-hover);
}

/* =================================== */
/* === BOTÓN MINIMIZAR SIDEBAR (debajo del logo) === */
/* =================================== */
.sidebar-toggle-wrapper {
    margin-left: -1rem;
    margin-right: -1rem;
    padding: 0.5rem 0.75rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    box-sizing: content-box;
}
.main-sidebar .sidebar-toggle-wrapper .sidebar-toggle-btn {
    width: 100%;
    box-sizing: border-box;
}
.sidebar-toggle-btn {
    display: flex !important;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    color: var(--color-nav-header) !important;
    font-size: 0.85rem;
    padding: 0.5rem 0.75rem !important;
    border-radius: 4px;
    transition: background-color 0.2s, color 0.2s;
}
.sidebar-toggle-btn:hover {
    color: var(--color-blanco) !important;
    background-color: rgba(255, 255, 255, 0.1);
}
.sidebar-toggle-arrow {
    font-size: 0.75rem;
    transition: transform 0.2s;
}
.sidebar-collapse .sidebar-toggle-arrow {
    transform: rotate(180deg);
}
/* Cuando la barra está minimizada: solo mostrar la flecha, sin texto (evita que se corte) */
.sidebar-collapse .sidebar-toggle-wrapper .sidebar-toggle-text {
    display: none !important;
}
.sidebar-toggle-text {
    white-space: nowrap;
}

/* =================================== */
/* === BOTONES DE ACCIÓN EN TABLAS (iconos estandarizados) === */
/* =================================== */
.btn-act {
    width: 2rem;
    height: 2rem;
    padding: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    margin: 0 1px;
    transition: opacity 0.2s, transform 0.2s;
}
.btn-act:hover {
    opacity: 0.9;
    transform: scale(1.05);
}
.btn-act .fa, .btn-act i {
    font-size: 0.875rem;
    margin: 0;
}
.btn-act.btn-outline-primary { color: #007bff; border-color: #007bff; }
.btn-act.btn-outline-primary:hover { color: #fff; background-color: #007bff; }
.btn-act.btn-outline-success { color: #28a745; border-color: #28a745; }
.btn-act.btn-outline-success:hover { color: #fff; background-color: #28a745; }
.btn-act.btn-outline-info { color: #17a2b8; border-color: #17a2b8; }
.btn-act.btn-outline-info:hover { color: #fff; background-color: #17a2b8; }
.btn-act.btn-outline-warning { color: #ffc107; border-color: #ffc107; }
.btn-act.btn-outline-warning:hover { color: #212529; background-color: #ffc107; }
.btn-act.btn-outline-danger { color: #dc3545; border-color: #dc3545; }
.btn-act.btn-outline-danger:hover { color: #fff; background-color: #dc3545; }
.btn-act.btn-outline-secondary { color: #6c757d; border-color: #6c757d; }
.btn-act.btn-outline-secondary:hover { color: #fff; background-color: #6c757d; }

/* Botón Acciones y menú desplegable en listado de actas */
.btn-acciones-acta {
    font-size: 0.8rem;
    padding: 0.35rem 0.6rem;
}
.dropdown-menu-acciones {
    min-width: 220px;
    padding: 0.35rem 0;
}
.dropdown-menu-acciones .dropdown-item {
    font-size: 0.875rem;
    padding: 0.4rem 1rem;
}
.dropdown-menu-acciones .dropdown-item i {
    width: 1.25rem;
    text-align: center;
}
.dropdown-menu-acciones .dropdown-item.disabled {
    pointer-events: none;
    opacity: 0.6;
}
.dropdown-menu-acciones .dropdown-item .badge.badge-sm {
    font-size: 0.65rem;
    vertical-align: middle;
}

/* =================================== */
/* === VISTA PREVIA ACTA (modal) - Estilo corporativo === */
/* =================================== */
.modal-preview-acta .modal-dialog { max-width: 90%; }
.modal-preview-acta .modal-body { max-height: 75vh; overflow-y: auto; padding: 1.25rem; }
.modal-preview-acta .modal-header {
    background: var(--color-gris-texto);
    color: var(--color-blanco);
    border-bottom: 3px solid var(--color-naranja-acento);
    padding: 0.75rem 1.25rem;
}
.modal-preview-acta .modal-title { font-size: 1.1rem; font-weight: 600; }
.modal-preview-acta .modal-header .close { color: var(--color-blanco); opacity: 0.9; text-shadow: none; }
.modal-preview-acta .modal-header .close:hover { opacity: 1; }
.modal-preview-acta .modal-footer { border-top: 1px solid var(--color-borde-suave); padding: 0.75rem 1.25rem; }

.preview-acta { font-size: 0.9rem; color: var(--color-gris-texto); }

.preview-header {
    text-align: center;
    padding: 1rem 0 1.25rem;
    margin-bottom: 1.25rem;
    border-bottom: 2px solid var(--color-borde-suave);
}
.preview-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-gris-texto);
    margin: 0 0 0.25rem 0;
    letter-spacing: 0.02em;
}
.preview-subtitle {
    font-size: 1rem;
    color: var(--color-gris-texto);
    margin: 0 0 0.5rem 0;
    font-weight: 500;
}
.preview-meta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}
.preview-meta-item { font-size: 0.85rem; color: #555; }
.preview-meta-badge {
    display: inline-block;
    padding: 0.2rem 0.6rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    background: var(--color-naranja-acento);
    color: var(--color-blanco);
}

.preview-section { margin-bottom: 1.5rem; }
.preview-section-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-gris-texto);
    margin: 0 0 0.75rem 0;
    padding-bottom: 0.4rem;
    border-bottom: 2px solid var(--color-naranja-acento);
}
.preview-section-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.5rem;
    height: 1.5rem;
    border-radius: 4px;
    background: var(--color-gris-texto);
    color: var(--color-blanco);
    font-size: 0.8rem;
}

.preview-card {
    background: var(--color-fondo-body);
    border: 1px solid var(--color-borde-suave);
    border-radius: 6px;
    padding: 1rem 1.25rem;
    margin-bottom: 0.75rem;
}
.preview-card-block { margin-bottom: 0.75rem; }
.preview-card-block:last-child { margin-bottom: 0; }
.preview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 0.75rem 1.25rem;
}
.preview-field label {
    display: block;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    color: var(--color-naranja-acento);
    font-weight: 600;
    margin-bottom: 0.2rem;
}
.preview-field p { margin: 0; font-size: 0.9rem; color: var(--color-gris-texto); }
.preview-temario { margin: 0; padding-left: 1.25rem; }
.preview-temario li { margin-bottom: 0.35rem; color: var(--color-gris-texto); }
.preview-block-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-gris-texto);
    margin: 0 0 0.5rem 0;
    padding-bottom: 0.25rem;
    border-bottom: 1px solid var(--color-borde-suave);
}
.preview-label {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    color: var(--color-naranja-acento);
    font-weight: 600;
    margin: 0.5rem 0 0.2rem 0;
}
.preview-text { margin: 0 0 0.5rem 0; line-height: 1.5; color: var(--color-gris-texto); }
.preview-pre {
    margin: 0;
    padding: 0.75rem;
    background: var(--color-blanco);
    border: 1px solid var(--color-borde-suave);
    border-radius: 4px;
    font-size: 0.85rem;
    white-space: pre-wrap;
    font-family: inherit;
    color: var(--color-gris-texto);
}

.preview-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
}
.preview-table thead th {
    background: var(--color-gris-texto);
    color: var(--color-blanco);
    font-weight: 600;
    text-align: left;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--color-gris-texto-hover);
}
.preview-table thead th:first-child { width: 2.5rem; text-align: center; }
.preview-table tbody td {
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--color-borde-suave);
    vertical-align: middle;
}
.preview-table tbody tr:nth-child(even) { background: rgba(0,0,0,0.02); }
.preview-table .preview-num { text-align: center; color: #666; font-weight: 600; }
.preview-table .firma-td { width: 120px; min-width: 100px; }

.firma-cell-wrap {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 40px;
    position: relative;
}
.modal-preview-acta .firma-thumb {
    max-width: 100px;
    max-height: 36px;
    object-fit: contain;
    border: 1px solid var(--color-borde-suave);
    border-radius: 4px;
    display: block;
}

.firma-placeholder {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.25rem;
    min-width: 80px;
    min-height: 36px;
    padding: 0.35rem 0.5rem;
    background: #f0f0f0;
    border: 1px dashed var(--color-borde-suave);
    border-radius: 4px;
    color: #888;
    font-size: 0.7rem;
    text-align: center;
}
.firma-placeholder i {
    font-size: 1rem;
    color: #aaa;
}
.firma-placeholder em {
    font-style: normal;
    display: block;
    font-size: 0.65rem;
}
.firma-placeholder-error,
.firma-placeholder.firma-placeholder-error {
    background: #fef3e8;
    border-color: #e0a040;
    color: #8a6d3b;
}
.firma-placeholder-error i,
.firma-placeholder.firma-placeholder-error i {
    color: #e0a040;
}
.firma-placeholder-empty {
    min-height: 48px;
    padding: 0.75rem;
}
.preview-empty { text-align: center; }
.preview-empty .firma-placeholder-empty i { font-size: 1.5rem; }
.preview-empty .firma-placeholder-empty em { font-size: 0.8rem; }

/* =================================== */
/* === RESPONSIVE - PANTALLAS PEQUEÑAS (móvil) === */
/* =================================== */
@media (max-width: 767.98px) {
    body {
        font-size: 14px;
    }
    .content-wrapper .content {
        padding: 0.5rem !important;
    }
    .content-header .row,
    .card-body {
        padding-left: 0.5rem;
        padding-right: 0.5rem;
    }
    .main-header .navbar-nav .nav-link {
        padding: 0.35rem 0.5rem;
        font-size: 0.9rem;
    }
    .main-sidebar {
        padding-bottom: 1rem;
    }
    .sidebar-toggle-wrapper {
        padding: 0.4rem 0.75rem;
    }
    .sidebar-toggle-text {
        display: none;
    }
    .sidebar-toggle-btn {
        justify-content: center;
        width: 100%;
    }
    .brand-link .brand-text {
        font-size: 0.9rem;
    }
    .nav-sidebar .nav-link {
        padding: 0.5rem 1rem;
        font-size: 0.9rem;
    }
    .card {
        margin-bottom: 0.75rem;
    }
    .card-header,
    .card-footer {
        padding: 0.5rem 0.75rem;
    }
    .card-footer .btn {
        font-size: 0.875rem;
        padding: 0.4rem 0.75rem;
    }
    .btn-group .btn,
    .table .btn-xs {
        padding: 0.25rem 0.4rem;
        font-size: 0.75rem;
    }
    .table-responsive {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        margin-bottom: 0.5rem;
    }
    .table thead th,
    .table td {
        padding: 0.4rem 0.35rem;
        font-size: 0.8rem;
    }
    #tabla-actas_wrapper .dataTables_scrollBody,
    #tabla-usuarios_wrapper .dataTables_scrollBody {
        overflow-x: auto !important;
    }
    .dataTables_wrapper .dataTables_length,
    .dataTables_wrapper .dataTables_filter {
        margin-bottom: 0.5rem;
        font-size: 0.85rem;
    }
    .login-box,
    .register-box {
        width: 100%;
        max-width: 100%;
        padding: 0.5rem;
    }
    .login-box .card,
    .register-box .card {
        margin: 0;
    }
    .signature-pad {
        min-height: 120px;
    }
    .main-footer {
        font-size: 0.75rem;
        padding: 0.5rem;
    }
}

@media (max-width: 575.98px) {
    .content-header h1 {
        font-size: 1.25rem;
    }
    .float-right.btn,
    .btn-primary.float-right {
        float: none !important;
        display: block;
        width: 100%;
        margin-top: 0.5rem;
    }
}