:root {
    /* Brand Colors */
    --unitre-green: #28a745;
    --unitre-green-hover: #218838;
    --unitre-green-transparent: rgba(40, 167, 69, 0.1);
    --unitre-green-focus: rgba(40, 167, 69, 0.25);
    --unitre-green-shadow: rgba(40, 167, 69, 0.3);

    /* Backgrounds (Dark Mode Defaults) */
    --unitre-bg-main: #0b0d10; /* Dark gray base */
    --unitre-bg-card: #161b22; /* Card background */
    --unitre-bg-secondary: #0d1117; /* Sidebar secondary */
    --unitre-bg-input: #161b22;
    --unitre-bg-input-disabled: #0b0d10;
    --unitre-bg-black: #010409;
    --unitre-bg-overlay: rgba(0, 0, 0, 0.6);
    --unitre-bg-table-odd: rgba(255, 255, 255, 0.02);

    /* Text (Dark Mode Defaults) */
    --unitre-text-main: #e6edf3;
    --unitre-text-muted: #8b949e;
    --unitre-text-light: #ffffff;
    --unitre-text-placeholder: #6e7681;

    /* Borders (Dark Mode Defaults) */
    --unitre-border: #30363d;
    --unitre-border-input: #484f58;
    --unitre-border-muted: #30363d;
    --unitre-border-hover: #6e7681;
    --unitre-border-light: rgba(255, 255, 255, 0.08);

    /* Spacing & Sizes */
    --navbar-height: 60px;
    --sidebar-width: 250px;
    --border-radius-base: 8px; /* Bordo più morbido e moderno */

    /* Generic SaaS Shadows */
    --unitre-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --unitre-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
    --unitre-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);

    /* Bootstrap 5 Light Mode Defaults overrides */
    --bs-body-bg: #f8f9fa; /* Fallback base per contrasti migliori */
    --unitre-body-bg-gradient: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 50%, #dee2e6 100%); /* Sfumatura grigio chiarissimo */
    --bs-body-color: #334155;
    --bs-card-bg: #ffffff;
    --bs-tertiary-bg: #ffffff;
    --bs-border-color: #e2e8f0;

    /* Bootstrap 5 brand overrides (applied to both modes) */
    --bs-primary: var(--unitre-green);
    --bs-success: var(--unitre-green);
}

[data-bs-theme="dark"] {
    --bs-body-bg: var(--unitre-bg-main);
    --unitre-body-bg-gradient: linear-gradient(135deg, #0d1117 0%, #161b22 50%, #010409 100%); /* Sfumatura dark gray neutra */
    --bs-body-color: var(--unitre-text-main);
    --bs-card-bg: var(--unitre-bg-card);
    --bs-border-color: var(--unitre-border);
    --bs-tertiary-bg: var(--unitre-bg-secondary);
}

/* Enforce dark mode input backgrounds */
[data-bs-theme="dark"] .form-control,
[data-bs-theme="dark"] .form-select {
    background-color: #2b3035 !important; /* Grigio-scuro */
    color: #e6edf3;
    border-color: var(--unitre-border-input);
}

[data-bs-theme="dark"] .form-control:focus,
[data-bs-theme="dark"] .form-select:focus {
    background-color: #2b3035 !important;
}

[data-bs-theme="dark"] .form-control:disabled,
[data-bs-theme="dark"] .form-control[readonly],
[data-bs-theme="dark"] .form-select:disabled {
    background-color: #1e2227 !important;
}

body {
    background-color: var(--bs-body-bg);
    background-image: var(--unitre-body-bg-gradient);
    background-attachment: fixed;
    color: var(--bs-body-color);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: var(--unitre-green);
    transition: color 0.2s ease;
}

a:hover {
    color: var(--unitre-green-hover);
}

/* =========================================
   Layout: Navbar & Sidebar
   ========================================= */

/* Top Navbar */
.navbar {
    background-color: var(--bs-tertiary-bg);
    border-bottom: 1px solid var(--bs-border-color);
}

[data-bs-theme="dark"] .navbar {
    background-color: var(--unitre-bg-black);
}

.navbar-brand {
    color: var(--unitre-green);
}

/* App Layout Container */
.app-layout {
    display: flex;
    gap: 1.5rem;
    padding: 1.5rem;
    height: calc(100vh - var(--navbar-height));
    margin-top: var(--navbar-height);
    overflow: hidden; /* Panels will scroll internally */
}

/* Base Panel Card (Sidebar, Main, Right Sidebar) */
.panel-card {
    background-color: var(--bs-card-bg);
    border: 1px solid var(--bs-border-color);
    border-radius: var(--border-radius-base);
    box-shadow: var(--unitre-shadow-md);
    overflow-y: auto;
    transition: all 0.3s ease;
}

[data-bs-theme="dark"] .panel-card {
    box-shadow: 0 4px 15px var(--unitre-bg-overlay);
    border: 1px solid var(--unitre-border-light);
}

/* Sidebar */
.sidebar {
    height: 100%;
    width: var(--sidebar-width);
    min-width: var(--sidebar-width);
    background-color: var(--bs-tertiary-bg); /* Usa il colore terziario (bianco su light) anziché body-bg */
    padding-top: 0;
    z-index: 1000;
}

.sidebar.collapsed {
    width: 60px;
    min-width: 60px;
}

#sidebar .nav-link {
    color: var(--bs-body-color);
    font-weight: 500;
    padding: 0.55rem 1rem;
    border-radius: 6px;
    transition: background-color 0.15s ease;
    display: flex;
    align-items: center;
    margin-bottom: 0.2rem;
}

#sidebar .nav-link:hover {
    background-color: var(--bs-tertiary-bg);
}

#sidebar .nav-link.active {
    color: #ffffff;
    background: linear-gradient(135deg, var(--unitre-green), var(--unitre-green-hover));
    box-shadow: 0 4px 6px var(--unitre-green-shadow);
    font-weight: 600;
    border-left: none;
}

[data-bs-theme="dark"] #sidebar .nav-link.active {
    background: linear-gradient(135deg, var(--unitre-green-hover), var(--unitre-green));
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.4);
}

#sidebar .nav-link.active i {
    color: #ffffff;
}

#sidebar .nav-link i {
    margin-right: 8px;
    font-size: 0.95rem;
    min-width: 25px;
    text-align: center;
}

#sidebar .nav-section-title {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    opacity: 0.6;
    margin: 1rem 0 0.5rem 1rem;
}

.sidebar.collapsed .nav-link span {
    display: none;
}

/* Toggle Button */
.sidebar-toggle {
    cursor: pointer;
    color: var(--bs-body-color);
    font-size: 1.5rem;
}

/* Main Content */
.main-content {
    flex: 1;
    min-width: 0; /* Prevents flex child from overflowing */
    height: 100%;
    padding: 2rem;
}

/* Right Sidebar */
.right-sidebar {
    height: 100%;
    width: 300px;
    min-width: 300px;
    position: relative;
    background-color: var(--bs-tertiary-bg);
}

.right-sidebar.collapsed {
    width: 60px;
    min-width: 60px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.right-sidebar.collapsed .right-sidebar-content {
    display: none;
}

.right-sidebar-toggle-btn {
    position: absolute;
    top: 1rem;
    left: 1rem;
    cursor: pointer;
    color: var(--bs-body-color);
    z-index: 10;
}

.right-sidebar.collapsed .right-sidebar-toggle-btn {
    position: static;
}

.right-sidebar-content {
    padding: 1rem;
    padding-top: 3rem; /* Spazio per il pulsante toggle */
}

/* =========================================
   Components: Cards, Modals
   ========================================= */

.card {
    background-color: var(--bs-card-bg);
    border: 1px solid var(--bs-border-color);
    border-radius: var(--border-radius-base);
    box-shadow: var(--unitre-shadow-md);
    margin-bottom: 1.5rem;
    transition: box-shadow 0.2s ease-in-out;
}

[data-bs-theme="dark"] .card {
    box-shadow: 0 4px 15px var(--unitre-bg-overlay);
    border: 1px solid var(--unitre-border-light);
}

.card-header {
    background-color: rgba(0, 0, 0, 0.03);
    border-bottom: 1px solid var(--bs-border-color);
    color: var(--bs-body-color);
    font-weight: 600;
}

[data-bs-theme="dark"] .card-header {
    background-color: var(--unitre-bg-overlay);
}

.card-body {
    color: var(--bs-body-color);
}

.modal-content {
    background-color: var(--bs-body-bg);
    color: var(--bs-body-color);
    border: 1px solid var(--bs-border-color);
}

.modal-header,
.modal-footer {
    border-color: var(--bs-border-color);
}

[data-bs-theme="dark"] .modal-content {
    background-color: var(--unitre-bg-card);
    border-color: var(--unitre-border-input);
}

[data-bs-theme="dark"] .modal-header,
[data-bs-theme="dark"] .modal-footer {
    border-color: var(--unitre-border);
}

[data-bs-theme="dark"] .btn-close {
    filter: invert(1) grayscale(100%) brightness(200%);
}

/* =========================================
   Components: Buttons
   ========================================= */

/* General Button Reset */
.btn {
    border-radius: var(--border-radius-base);
    font-weight: 500;
    transition: all 0.2s ease-in-out;
}

/* Primary Action Buttons (Nuovo, Salva, Aggiorna) */
.btn-success,
.btn-primary {
    background-color: var(--unitre-green);
    border: none;
    color: var(--unitre-text-light);
}

.btn-success:hover,
.btn-primary:hover,
.btn-success:active,
.btn-primary:active,
.btn-success:focus,
.btn-primary:focus {
    background-color: var(--unitre-green-hover);
    filter: brightness(0.9);
    box-shadow: 0 0 0 0.2rem var(--unitre-green-shadow);
}

/* Outline Buttons (Annulla, Indietro) */
.btn-outline-secondary,
.btn-secondary {
    color: var(--bs-body-color);
    border-color: var(--bs-border-color);
    background-color: transparent;
}

.btn-outline-secondary:hover,
.btn-secondary:hover {
    background-color: var(--bs-tertiary-bg);
    border-color: var(--bs-border-color);
    color: var(--bs-body-color);
}

[data-bs-theme="dark"] .btn-outline-secondary,
[data-bs-theme="dark"] .btn-secondary {
    color: var(--unitre-text-main);
    border-color: var(--unitre-border-muted);
}

[data-bs-theme="dark"] .btn-outline-secondary:hover,
[data-bs-theme="dark"] .btn-secondary:hover {
    background-color: var(--unitre-border);
    border-color: var(--unitre-border-hover);
    color: var(--unitre-text-light);
}

/* Common Outline Button Fixes */
.btn-outline-primary {
    color: var(--unitre-green);
    border-color: var(--unitre-green);
}

.btn-outline-primary:hover {
    background-color: var(--unitre-green);
    color: #fff;
}

.btn-outline-danger {
    color: #dc3545;
    border-color: #dc3545;
}

.btn-outline-danger:hover {
    background-color: #dc3545;
    color: #fff;
}

.btn-danger {
    background-color: #dc3545;
    border: none;
}

/* =========================================
   Components: Tables
   ========================================= */

.table {
    color: var(--unitre-text-main);
    background-color: transparent;
    margin-bottom: 0;
}

.table thead th {
    background-color: var(--bs-tertiary-bg);
    color: var(--bs-body-color);
    font-weight: 600;
    letter-spacing: 0.4px;
    border-bottom: 1px solid var(--bs-border-color);
    vertical-align: middle;
}

[data-bs-theme="dark"] .table {
    --bs-table-striped-bg: rgba(255, 255, 255, 0.03);
}

.table-striped>tbody>tr:nth-of-type(odd)>* {
    --bs-table-bg-type: var(--bs-table-striped-bg);
}

[data-bs-theme="dark"] .table thead th {
    background-color: var(--unitre-bg-black);
    color: var(--unitre-text-light);
}

.table tbody td {
    border-color: var(--unitre-border-light);
    vertical-align: middle;
}

.table-striped tbody tr:nth-of-type(odd) {
    background-color: var(--unitre-bg-table-odd);
}

.table-hover tbody tr:hover {
    background-color: var(--unitre-bg-secondary);
    color: var(--unitre-text-light);
}

/* Actions Column specific */
.actions-col {
    width: 80px;
    max-width: 80px;
}

/* Table Dark Overrides (Bootstrap 5 Variable Override) */
.table-dark {
    --bs-table-bg: transparent;
    --bs-table-striped-bg: var(--unitre-bg-table-odd);
    --bs-table-striped-color: var(--unitre-text-main);
    --bs-table-active-bg: var(--unitre-bg-secondary);
    --bs-table-active-color: var(--unitre-text-light);
    --bs-table-hover-bg: var(--unitre-bg-secondary);
    --bs-table-hover-color: var(--unitre-text-light);

    background-color: transparent;
    border-color: var(--unitre-border);
    color: var(--unitre-text-main);
}

/* Zebra leggera in dark */
[data-bs-theme="dark"] .table {
    --bs-table-striped-bg: rgba(255, 255, 255, 0.03);
}

/* =========================================
   Components: Forms
   ========================================= */

/* Forms */
.form-label {
    color: var(--bs-body-color);
    font-weight: 500;
}

/* Background defaults for inputs */
.form-control,
.form-select {
    background-color: #ffffff;
    color: var(--bs-body-color);
}

/* Disabled state */
.form-control:disabled,
.form-control[readonly],
.form-select:disabled {
    background-color: #f8f9fa;
    opacity: 1;
}

/* Let Bootstrap handle focus natively, we only enforce focus styling */
.form-control:focus,
.form-select:focus {
    background-color: #ffffff;
    border-color: var(--unitre-green);
    box-shadow: 0 0 0 0.25rem var(--unitre-green-focus);
}

/* Tabs */
.nav-tabs {
    border-bottom: 1px solid var(--bs-border-color);
}

.nav-tabs .nav-link {
    color: var(--bs-secondary-color);
    border: 1px solid transparent;
}

.nav-tabs .nav-link:hover {
    border-color: var(--bs-border-color) var(--bs-border-color) var(--bs-border-color);
    color: var(--bs-body-color);
    background-color: var(--bs-tertiary-bg);
}

.nav-tabs .nav-link.active {
    color: var(--unitre-green);
    background-color: var(--bs-card-bg);
    border-color: var(--bs-border-color) var(--bs-border-color) var(--bs-card-bg);
}

/* Checkboxes & Radios */
.form-check-input:checked {
    background-color: var(--unitre-green);
    border-color: var(--unitre-green);
}

.form-check-input:focus {
    box-shadow: 0 0 0 0.25rem var(--unitre-green-focus);
    border-color: var(--unitre-green);
}

/* Form inputs placeholders */
.form-control::placeholder {
    color: var(--bs-secondary-color);
    opacity: 0.8;
}

/* =========================================
   Plugins: DataTables & Virtual Select
   ========================================= */

/* DataTables */
.dataTables_wrapper .dataTables_length,
.dataTables_wrapper .dataTables_filter,
.dataTables_wrapper .dataTables_info,
.dataTables_wrapper .dataTables_processing,
.dataTables_wrapper .dataTables_paginate {
    color: var(--bs-body-color);
    padding-top: 1rem;
}

.dataTables_wrapper .dataTables_length select,
.dataTables_wrapper .dataTables_filter input {
    background-color: var(--bs-body-bg);
    border: 1px solid var(--bs-border-color);
    color: var(--bs-body-color);
    border-radius: var(--border-radius-base);
}

.dataTables_wrapper .dataTables_filter input:focus,
.dataTables_wrapper .dataTables_length select:focus {
    background-color: var(--bs-body-bg);
    color: var(--bs-body-color);
    border-color: var(--unitre-green);
    box-shadow: 0 0 0 0.25rem var(--unitre-green-focus);
    outline: none;
}

.page-item.active .page-link {
    background-color: var(--unitre-green);
    border-color: var(--unitre-green);
    color: #fff;
}

.page-link {
    background-color: var(--bs-card-bg);
    border-color: var(--bs-border-color);
    color: var(--bs-body-color);
}

.page-link:hover {
    background-color: var(--bs-tertiary-bg);
    border-color: var(--bs-border-color);
    color: var(--unitre-green);
}

.page-item.disabled .page-link {
    background-color: var(--bs-secondary-bg);
    border-color: var(--bs-border-color);
    color: var(--bs-secondary-color);
}

/* Virtual Select Overrides
   We map properties to Bootstrap CSS vars so it reacts well to the active theme */
.vscomp-ele {
    display: block !important;
    width: 100% !important;
    max-width: 100% !important;
}

.vscomp-toggle-button {
    background-color: var(--bs-body-bg) !important;
    border-color: var(--bs-border-color) !important;
    border-radius: var(--bs-border-radius, var(--border-radius-base)) !important;
    color: var(--bs-body-color) !important;
}

.vscomp-value {
    color: var(--bs-body-color) !important;
}

.vscomp-dropbox {
    background-color: var(--bs-body-bg) !important;
    border-color: var(--bs-border-color) !important;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1) !important;
}

.vscomp-option {
    color: var(--bs-body-color) !important;
}

.vscomp-option:hover,
.vscomp-option.focused {
    background-color: var(--bs-tertiary-bg) !important;
}

.vscomp-option.selected {
    background-color: var(--unitre-green) !important;
    color: #fff !important;
}

.vscomp-search-input {
    background-color: var(--bs-body-bg) !important;
    color: var(--bs-body-color) !important;
    border-bottom: 1px solid var(--bs-border-color) !important;
}

[data-bs-theme="dark"] .vscomp-dropbox {
    background-color: var(--bs-card-bg) !important;
    box-shadow: 0 4px 6px var(--unitre-bg-overlay) !important;
}

[data-bs-theme="dark"] .vscomp-toggle-button {
    background-color: var(--bs-body-bg) !important;
}

[data-bs-theme="dark"] .vscomp-search-input {
    background-color: var(--bs-card-bg) !important;
}

/* Select2 Overrides map to BS themes */
.select2-container--bootstrap-5 .select2-selection {
    background-color: var(--bs-body-bg);
    border: 1px solid var(--bs-border-color);
    color: var(--bs-body-color);
    border-radius: var(--bs-border-radius, var(--border-radius-base));
}

.select2-container--bootstrap-5 .select2-selection--single .select2-selection__rendered {
    color: var(--bs-body-color);
}

.select2-container--bootstrap-5.select2-container--focus .select2-selection,
.select2-container--bootstrap-5.select2-container--open .select2-selection {
    border-color: var(--unitre-green);
    box-shadow: 0 0 0 0.25rem var(--unitre-green-focus);
}

.select2-dropdown {
    background-color: var(--bs-body-bg);
    border: 1px solid var(--bs-border-color);
}

.select2-search--dropdown .select2-search__field {
    background-color: var(--bs-body-bg);
    border: 1px solid var(--bs-border-color);
    color: var(--bs-body-color);
}

.select2-results__option {
    color: var(--bs-body-color);
}

.select2-results__option--highlighted[aria-selected] {
    background-color: var(--unitre-green) !important;
    color: #fff !important;
}

[data-bs-theme="dark"] .select2-dropdown {
    background-color: var(--bs-card-bg);
    border-color: var(--bs-border-color);
    box-shadow: 0 4px 6px var(--unitre-bg-overlay);
}

[data-bs-theme="dark"] .select2-search--dropdown .select2-search__field {
    background-color: var(--bs-card-bg);
    border-color: var(--bs-border-color);
}

/* Custom UI Additions */
.navbar .nav-link.active {
    color: var(--unitre-green);
    border-bottom: 2px solid var(--unitre-green);
}