:root {
            --primary: #4f46e5;
            --primary-hover: #4338ca;
            --bg-main: rgba(15, 23, 42, 0.9);
            --bg-card: rgba(30, 41, 59, 0.7);
            --text-main: #f8fafc;
            --text-muted: #94a3b8;
            --border: rgba(255, 255, 255, 0.1);
            --success: #10b981;
            --danger: #ef4444;
            --warning: #f59e0b;
            --sidebar-width: 260px;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Inter', sans-serif;
        }

        body {
            background: #000 url('fiber_optic.png') no-repeat fixed center center;
            background-size: cover;
            color: var(--text-main);
            display: flex;
            min-height: 100vh;
            position: relative;
        }

        body::before {
            content: "";
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.4);
            /* Capa de oscurecimiento */
            z-index: -1;
            transition: background 0.3s;
            pointer-events: none;
        }

        body>* {
            position: relative;
            z-index: 1;
        }

        /* Sidebar */
        .sidebar {
            width: var(--sidebar-width);
            background: rgba(15, 23, 42, 0.95);
            backdrop-filter: blur(15px);
            color: white;
            padding: 1.5rem;
            display: flex;
            flex-direction: column;
            position: fixed;
            height: 100vh;
            z-index: 1100;
            border-right: 1px solid var(--border);
            transform: translateX(-100%);
            transition: transform 0.3s ease;
            overflow-y: auto;
        }

        .sidebar::-webkit-scrollbar {
            width: 6px;
        }

        .sidebar::-webkit-scrollbar-thumb {
            background-color: rgba(255, 255, 255, 0.2);
            border-radius: 10px;
        }

        .sidebar.active {
            transform: translateX(0);
        }

        .sidebar h2 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 2rem;
            display: flex;
            align-items: center;
            gap: 0.75rem;
            color: #f8fafc;
        }

        .nav-links {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
            height: 100%;
        }

        .nav-item {
            padding: 0.75rem 1rem;
            border-radius: 0.5rem;
            cursor: pointer;
            transition: all 0.2s;
            display: flex;
            align-items: center;
            gap: 0.75rem;
            color: #cbd5e1;
            text-decoration: none;
        }

        .nav-item:hover,
        .nav-item.active {
            background: #334155;
            color: white;
        }

        .nav-item.active {
            background: var(--primary);
        }

        /* Submenu */
        .submenu {
            margin-left: 1.5rem;
            display: none;
            flex-direction: column;
            gap: 0.25rem;
            margin-top: 0.25rem;
            border-left: 2px solid var(--border);
            padding-left: 0.5rem;
        }

        .submenu.active {
            display: flex;
        }

        .nav-item.has-submenu::after {
            content: '▼';
            margin-left: auto;
            transition: transform 0.3s;
        }

        .nav-item.has-submenu.open::after {
            transform: rotate(-180deg);
        }

        /* Manage Mode Classes */
        .manage-only {
            display: none !important;
        }

        .manage-mode .manage-only {
            display: table-cell !important;
        }

        .role-admin-only,
        .role-edit-only {
            display: none !important;
        }

        body.role-admin .role-admin-only {
            display: block !important;
        }

        body.role-admin .role-admin-only.nav-item {
            display: flex !important;
        }

        body.role-admin th.role-admin-only,
        body.role-admin td.role-admin-only {
            display: table-cell !important;
        }

        body.role-admin .role-edit-only,
        body.role-edit .role-edit-only {
            display: block !important;
        }

        body.role-admin .role-edit-only.nav-item,
        body.role-edit .role-edit-only.nav-item {
            display: flex !important;
        }

        /* Main Content */
        .main-content {
            margin-left: 0;
            flex: 1;
            padding: 2rem;
            min-height: 100vh;
            width: 100%;
            transition: all 0.3s ease;
        }

        body.sidebar-active .main-content {
            margin-left: var(--sidebar-width);
            width: calc(100% - var(--sidebar-width));
        }

        #menu-toggle {
            display: flex;
            align-items: center;
            justify-content: center;
            position: fixed;
            top: 1.25rem;
            left: 1.25rem;
            width: 3rem;
            height: 3rem;
            background: rgba(15, 23, 42, 0.8);
            backdrop-filter: blur(10px);
            border: 1px solid var(--border);
            border-radius: 0.75rem;
            color: white;
            font-size: 1.5rem;
            cursor: pointer;
            z-index: 2000;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
        }

        #menu-toggle:hover {
            background: var(--primary);
            transform: scale(1.05);
        }

        header {
            margin-bottom: 2rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
            padding-left: 3.5rem;
        }

        /* Stats Grid */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 1.5rem;
            margin-bottom: 2rem;
        }

        .stat-card {
            background: var(--bg-card);
            padding: 1.5rem;
            border-radius: 1rem;
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
            border: 1px solid var(--border);
        }

        .stat-card h4 {
            color: var(--text-muted);
            font-size: 0.875rem;
            margin-bottom: 0.5rem;
        }

        .stat-card .value {
            font-size: 1.5rem;
            font-weight: 700;
        }

        /* View Containers */
        .view {
            display: none;
            animation: fadeIn 0.3s ease-out;
        }

        .view.active {
            display: block;
        }

        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(10px);
            }

            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* Tables */
        .card {
            background: var(--bg-card);
            backdrop-filter: blur(10px);
            border-radius: 1rem;
            border: 1px solid var(--border);
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
            margin-bottom: 1.5rem;
            width: 100%;
            overflow: hidden;
        }

        .table-container {
            width: 100%;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
        }

        table {
            width: 100%;
            min-width: 700px;
            /* Asegura legibilidad en móviles */
            border-collapse: collapse;
        }

        th {
            background: rgba(15, 23, 42, 0.5);
            padding: 0.75rem 1.5rem;
            text-align: left;
            font-size: 0.75rem;
            text-transform: uppercase;
            color: var(--text-muted);
            font-weight: 600;
        }

        td {
            padding: 1rem 1.5rem;
            border-bottom: 1px solid var(--border);
            font-size: 0.875rem;
        }

        .compact-tables td {
            padding: 0.3rem 0.5rem !important;
        }
        .compact-tables th {
            padding: 0.4rem 0.5rem !important;
        }
        /* COMPACT GRIDS (CARDS TO LIST) */
        .compact-tables #maint-grid, 
        .compact-tables #proj-grid, 
        .compact-tables #tasks-grid {
            display: flex !important;
            flex-direction: column !important;
            gap: 0.25rem !important;
        }

        .compact-tables #maint-grid .card,
        .compact-tables #proj-grid .card,
        .compact-tables #tasks-grid .card {
            padding: 0.5rem 1rem !important;
            display: flex !important;
            flex-direction: row !important;
            align-items: center !important;
            justify-content: space-between !important;
            flex-wrap: wrap;
            gap: 1rem;
        }

        .compact-tables #maint-grid .card > div,
        .compact-tables #proj-grid .card > div,
        .compact-tables #tasks-grid .card > div {
            margin: 0 !important;
            display: flex;
            align-items: center;
            gap: 1rem;
        }

        .compact-tables #maint-grid .card h3,
        .compact-tables #proj-grid .card h3,
        .compact-tables #tasks-grid .card h3 {
            margin: 0 !important;
            font-size: 0.95rem !important;
            min-width: 200px;
        }

        .compact-tables #maint-grid .card button,
        .compact-tables #proj-grid .card button,
        .compact-tables #tasks-grid .card button {
            padding: 0.2rem 0.5rem !important;
            font-size: 0.75rem !important;
            margin: 0 !important;
        }


        tr:last-child td {
            border-bottom: none;
        }

        .badge {
            padding: 0.25rem 0.5rem;
            border-radius: 9999px;
            font-size: 0.75rem;
            font-weight: 500;
        }

        .badge-success {
            background: #dcfce7;
            color: #166534;
        }

        .badge-danger {
            background: #fee2e2;
            color: #991b1b;
        }

        .badge-warning {
            background: #fef3c7;
            color: #92400e;
        }

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

        label {
            display: block;
            font-size: 0.875rem;
            font-weight: 500;
            margin-bottom: 0.5rem;
            color: var(--text-main);
        }

        input,
        select {
            width: 100%;
            padding: 0.625rem 0.75rem;
            border-radius: 0.5rem;
            border: 1px solid var(--border);
            background: rgba(255, 255, 255, 0.95);
            color: #000;
            font-size: 0.875rem;
            transition: border-color 0.2s;
        }

        input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
        }

        .btn {
            padding: 0.625rem 1.25rem;
            border-radius: 0.5rem;
            font-weight: 500;
            cursor: pointer;
            border: none;
            transition: all 0.2s;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.875rem;
        }

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

        /* Estilos para impresión mejorados */
        @media print {
            @page {
                size: A4 portrait;
                margin: 0;
            }

            body,
            html {
                background: white !important;
                color: black !important;
                margin: 0 !important;
                padding: 0 !important;
                width: 100%;
                height: auto;
            }

            #sidebar {
                display: none !important;
            }

            .main-content {
                margin: 0 !important;
                padding: 0 !important;
            }

            #view-project-details>*:not(#printable-report),
            #view-maint-details>*:not(#printable-report) {
                display: none !important;
            }

            body * {
                visibility: hidden;
            }

            .no-print,
            .no-print * {
                display: none !important;
            }

            #printable-report.active-print,
            #printable-report.active-print *,
            #view-feasibility-print.active,
            #view-feasibility-print.active * {
                visibility: visible !important;
            }

            #printable-report.active-print,
            #view-feasibility-print.active {
                display: block !important;
                position: absolute !important;
                top: 0.5cm !important;
                left: 1cm !important;
                right: 1cm !important;
                margin: 0 !important;
                padding: 0 !important;
                background: white !important;
                color: black !important;
                box-shadow: none !important;
                overflow: visible !important;
            }

            .report-header {
                display: flex !important;
                flex-direction: row !important;
                justify-content: space-between !important;
                align-items: center !important;
                border-bottom: 3px solid #000 !important;
                margin: 0 !important;
                margin-bottom: 20px !important;
                padding-bottom: 15px !important;
            }

            .report-info {
                text-align: right !important;
                color: black !important;
            }

            .report-info h2 {
                color: black !important;
            }

            table {
                width: 100% !important;
                border-collapse: collapse !important;
                margin-top: 10px !important;
                table-layout: fixed;
            }

            h3 {
                text-align: left !important;
                margin-bottom: 15px !important;
                color: black !important;
            }

            th,
            td {
                word-wrap: break-word;
                border: 1px solid #000 !important;
                padding: 6px !important;
                font-size: 10pt !important;
                color: black !important;
            }

            th {
                background-color: #eee !important;
                -webkit-print-color-adjust: exact;
            }

            #print-total {
                color: black !important;
                font-size: 1.2rem !important;
            }

            .report-footer {
                margin-top: 10px !important;
                border-top: 1px solid #000 !important;
                padding-top: 10px !important;
                font-size: 9pt !important;
                text-align: center !important;
                color: black !important;
            }

            .no-print {
                display: none !important;
            }
        }

        #printable-report {
            display: none;
            padding: 40px;
            font-family: 'Inter', sans-serif;
        }

        .report-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-bottom: 2px solid var(--primary);
            padding-bottom: 20px;
            margin-bottom: 30px;
        }

        .report-logo {
            height: 60px;
        }

        .report-info {
            text-align: right;
        }

        .report-footer {
            margin-top: 50px;
            padding-top: 20px;
            border-top: 1px solid #eee;
            text-align: center;
            font-size: 0.8rem;
            color: #777;
        }

        .bg-pattern {
            background: var(--danger);
            color: white;
        }

        .btn-outline {
            background: transparent;
            border: 1px solid var(--border);
            color: var(--text-main);
        }

        /* Suggestions */
        .search-container {
            position: relative;
        }

        .suggestions {
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background: white;
            border: 1px solid var(--border);
            border-radius: 0.5rem;
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
            z-index: 50;
            max-height: 200px;
            overflow-y: auto;
            display: none;
        }

        .suggestion-item {
            padding: 0.75rem 1rem;
            cursor: pointer;
            font-size: 0.875rem;
            color: #000;
        }

        .suggestion-item:hover {
            background: #f1f5f9;
        }

        /* Modal */
        #modal-material {
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.5);
            z-index: 200;
            display: none;
            align-items: center;
            justify-content: center;
            opacity: 0;
            transition: opacity 0.3s;
        }

        #modal-material.active {
            display: flex;
            opacity: 1;
        }

        /* Welcome Screen */
        #welcome-screen {
            position: fixed;
            inset: 0;
            z-index: 3000;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            background: #000 url('fiber_optic.png') no-repeat center center;
            background-size: cover;
            color: white;
            text-align: center;
            transition: transform 0.8s cubic-bezier(0.87, 0, 0.13, 1);
        }

        #welcome-screen.hidden {
            transform: translateY(-100%);
        }

        .welcome-logo {
            display: flex;
            flex-direction: column;
            align-items: center;
            margin-bottom: 3rem;
            line-height: 0.9;
        }

        .logo-main {
            font-size: 5rem;
            font-weight: 900;
            color: #ffffff;
            text-shadow: 0 0 15px rgba(255, 255, 255, 0.4), 2px 2px 10px rgba(0, 0, 0, 0.8);
            display: flex;
            flex-direction: column;
            align-items: flex-start;
        }

        .logo-lume {
            letter-spacing: -2px;
        }

        .logo-net {
            letter-spacing: -2px;
        }

        .logo-comunicaciones {
            font-size: 1.2rem;
            font-weight: 500;
            color: #ddd;
            letter-spacing: 0.45em;
            margin-top: 0.25rem;
            text-transform: uppercase;
        }

        #login-form {
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(10px);
            padding: 2.5rem;
            border-radius: 1.5rem;
            border: 1px solid rgba(255, 255, 255, 0.2);
            width: 100%;
            max-width: 400px;
            display: none;
            animation: fadeIn 0.5s ease-out;
        }

        .start-btn {
            padding: 1.25rem 4rem;
            font-size: 1.5rem;
            background: #003366;
            color: white;
            border: none;
            border-radius: 0.5rem;
            cursor: pointer;
            font-weight: 700;
        }

        @media (max-width: 1024px) {
            :root {
                --sidebar-width: 220px;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .sidebar {
                transform: translateX(-100%);
                transition: transform 0.3s ease;
            }

            .sidebar.active {
                transform: translateX(0);
            }

            .main-content {
                margin-left: 0;
                width: 100%;
                padding: 1rem;
                padding-top: 5rem;
            }

            #menu-toggle {
                display: block;
            }

            body.sidebar-active .main-content {
                margin-left: 0;
                width: 100%;
            }

            .header {
                position: fixed;
                top: 0;
                left: 0;
                right: 0;
                background: rgba(15, 23, 42, 0.95);
                backdrop-filter: blur(10px);
                z-index: 90;
                padding: 1rem;
                margin-bottom: 0;
                border-bottom: 1px solid var(--border);
            }

            .stats-grid {
                grid-template-columns: 1fr 1fr;
            }

            .logo-main {
                font-size: 3rem;
            }

            .logo-comunicaciones {
                font-size: 0.8rem;
                letter-spacing: 0.2em;
            }

            #login-form {
                width: 90%;
                padding: 1.5rem;
            }
        }

        @media (max-width: 480px) {
            .stats-grid {
                grid-template-columns: 1fr;
            }

            .view-header {
                flex-direction: column;
                align-items: flex-start;
                gap: 1rem;
            }

            .logo-main {
                font-size: 2.2rem;
            }

            .start-btn {
                padding: 1rem 2rem;
                font-size: 1.2rem;
            }
        }

        /* RBAC Granular Edit Restrictions */
        .no-edit-feasibility #btn-save-feas,
        .no-edit-feasibility .btn-new-feas,
        .no-edit-feasibility .feas-delete-img-btn,
        .no-edit-feasibility button[id^="btn-rm-feas-"],
        .view-mode .feas-delete-img-btn,
        .view-mode button[id^="btn-rm-feas-"],
        .view-mode input[type="file"] { display: none !important; }
        /* --- Permisos Granulares --- */
        /* Inventario */
        .no-create-inventory #btn-add-inv { display: none !important; }
        .no-edit-inventory .inv-actions { display: none !important; } 
        .no-edit-inventory #btn-save-inv { display: none !important; }
        .no-delete-inventory .btn-delete-inv,
        .no-delete-inventory button[onclick*="deleteInv"] { display: none !important; } 

        /* Proyectos */
        .no-create-projects .btn-new-project,
        .no-create-projects #btn-add-project { display: none !important; }
        .no-edit-projects #btn-save-project { display: none !important; }
        .no-delete-projects .proj-delete-img-btn,
        .no-delete-projects button[onclick*="deleteProject"] { display: none !important; }
        
        /* Mantenimientos */
        .no-create-maintenance .btn-new-maint,
        .no-create-maintenance #btn-add-maint { display: none !important; }
        .no-edit-maintenance #btn-save-maint { display: none !important; }
        .no-delete-maintenance .maint-delete-img-btn,
        .no-delete-maintenance button[onclick*="deleteMaintenance"] { display: none !important; }

        /* Levantamientos (Feasibility) */
        .no-create-feasibility .btn-new-feas { display: none !important; }
        .no-edit-feasibility #btn-save-feas { display: none !important; }
        .no-delete-feasibility .feas-delete-img-btn,
        .no-delete-feasibility button[id^="btn-rm-feas-"],
        .no-delete-feasibility button[onclick*="deleteFeasibility"] { display: none !important; }

        /* Tareas */
        .no-create-tasks #btn-new-task { display: none !important; }
        .no-edit-tasks .btn-save-task { display: none !important; }
        .no-delete-tasks .task-delete-btn,
        .no-delete-tasks button[onclick*="deleteTask"] { display: none !important; }

        /* Usuarios y Ajustes */
        .no-create-users #btn-new-user { display: none !important; }
        .no-edit-users #btn-save-user { display: none !important; }
        .no-delete-users button[onclick*="deleteUser"] { display: none !important; }
        
        .no-edit-settings .btn-save-settings { display: none !important; }
.no-assign-tasks #btn-add-task { display: none !important; }