/*
 * PRIMA NOTA CONTABILE - Design Moderno Bootstrap 5
 * CSS Standalone Completo - No Immagini Esterne
 */

/* Import Bootstrap Icons da CDN (embedded se necessario) */
@import url('https://cdn.jsdelivr.net/npm/bootstrap-icons@1.11.0/font/bootstrap-icons.css');

/* ========================================
   VARIABILI CSS
   ======================================== */
:root {
    /* Colori Primari */
    --primary-color: #1e40af;
    --primary-dark: #1e3a8a;
    --primary-light: #3b82f6;

    /* Colori Contabili */
    --dare-color: #28a745;
    --avere-color: #dc3545;

    /* Colori UI */
    --background: #f8f9fa;
    --surface: #ffffff;
    --border: #dee2e6;
    --text: #212529;
    --text-muted: #6c757d;

    /* Ombre */
    --shadow-sm: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    --shadow-md: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 1rem 3rem rgba(0, 0, 0, 0.175);

    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
}

/* ========================================
   RESET & BASE
   ======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text);
    background: var(--background);
    min-height: 100vh;
}

/* ========================================
   LAYOUT CONTAINER
   ======================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-lg);
}

.container-fluid {
    padding: var(--spacing-lg);
}

/* ========================================
   NAVBAR
   ======================================== */
.navbar {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    padding: var(--spacing-md) var(--spacing-lg);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--spacing-xl);
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.navbar-brand:hover {
    color: rgba(255, 255, 255, 0.9);
}

.navbar-nav {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
    flex-wrap: wrap;
    list-style: none;
    margin: var(--spacing-md) 0 0 0;
}

.nav-link {
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    transition: all 0.2s;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.nav-link:hover {
    background: rgba(255, 255, 255, 0.1);
    color: white;
}

.nav-link.active {
    background: rgba(255, 255, 255, 0.2);
    color: white;
}

.nav-link.logout {
    color: #ff6b6b;
    background: rgba(255, 255, 255, 0.1);
}

.nav-link.logout:hover {
    background: rgba(255, 107, 107, 0.2);
    color: #ff4d4d;
}

/* ========================================
   CARDS
   ======================================== */
.card {
    background: var(--surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    margin-bottom: var(--spacing-lg);
    overflow: hidden;
}

.card-header {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 2px solid var(--primary-color);
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--primary-dark);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.card-body {
    padding: var(--spacing-lg);
}

/* ========================================
   TABLES
   ======================================== */
.table-responsive {
    overflow-x: auto;
    margin: calc(var(--spacing-lg) * -1);
    padding: var(--spacing-lg);
}

.table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    font-size: 0.95rem;
}

.table thead {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
}

.table thead th {
    padding: var(--spacing-md);
    text-align: left;
    font-weight: 600;
    border: none;
    white-space: nowrap;
}

.table tbody tr {
    border-bottom: 1px solid var(--border);
    transition: background 0.2s;
}

.table tbody tr:hover {
    background: #f8f9fa;
}

.table tbody td {
    padding: var(--spacing-md);
    vertical-align: middle;
}

.table tbody tr:last-child {
    border-bottom: none;
}

/* Colonne specifiche */
.table .text-right {
    text-align: right;
}

.table .text-center {
    text-align: center;
}

/* ========================================
   FORMS
   ======================================== */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
    color: var(--text);
}

.form-control,
.form-select {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: border-color 0.2s, box-shadow 0.2s;
    background: white;
}

.form-control:focus,
.form-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(44, 95, 45, 0.25);
}

textarea.form-control {
    resize: vertical;
    min-height: 100px;
}

.form-text {
    display: block;
    margin-top: var(--spacing-xs);
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* Checkbox e Radio */
.form-check {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.form-check-input {
    width: 1.25rem;
    height: 1.25rem;
    cursor: pointer;
}

.form-check-label {
    cursor: pointer;
    user-select: none;
}

/* ========================================
   BUTTONS
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 1rem;
    font-weight: 500;
    text-align: center;
    text-decoration: none;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-dark) 0%, #1e3a8a 100%);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: #6c757d;
    color: white;
}

.btn-secondary:hover {
    background: #5a6268;
}

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

.btn-success:hover {
    background: #218838;
}

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

.btn-danger:hover {
    background: #c82333;
}

.btn-outline-primary {
    background: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

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

.btn-sm {
    padding: calc(var(--spacing-sm) * 0.5) var(--spacing-md);
    font-size: 0.875rem;
}

.btn-lg {
    padding: var(--spacing-md) calc(var(--spacing-lg) * 1.5);
    font-size: 1.125rem;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Button Group */
.btn-group {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

/* ========================================
   BADGES & LABELS
   ======================================== */
.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-success {
    background: #d4edda;
    color: #155724;
}

.badge-danger {
    background: #f8d7da;
    color: #721c24;
}

.badge-warning {
    background: #fff3cd;
    color: #856404;
}

.badge-info {
    background: #d1ecf1;
    color: #0c5460;
}

/* ========================================
   ALERTS & MESSAGES
   ======================================== */
.alert {
    padding: var(--spacing-md) var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    border-radius: var(--radius-md);
    border-left: 4px solid;
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.alert-success {
    background: #d4edda;
    border-color: #28a745;
    color: #155724;
}

.alert-danger {
    background: #f8d7da;
    border-color: #dc3545;
    color: #721c24;
}

.alert-warning {
    background: #fff3cd;
    border-color: #ffc107;
    color: #856404;
}

.alert-info {
    background: #d1ecf1;
    border-color: #17a2b8;
    color: #0c5460;
}

/* ========================================
   COLORI CONTABILI
   ======================================== */
.dare {
    color: var(--dare-color);
    font-weight: 600;
}

.avere {
    color: var(--avere-color);
    font-weight: 600;
}

.saldo-positivo {
    color: var(--dare-color);
}

.saldo-negativo {
    color: var(--avere-color);
}

/* ========================================
   PAGINATION
   ======================================== */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-xs);
    margin: var(--spacing-xl) 0;
    flex-wrap: wrap;
}

.pagination a,
.pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 2.5rem;
    height: 2.5rem;
    padding: var(--spacing-xs) var(--spacing-sm);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    text-decoration: none;
    color: var(--text);
    transition: all 0.2s;
    background: white;
}

.pagination a:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.pagination .active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    font-weight: 600;
}

/* ========================================
   ACTION ICONS (SVG inline)
   ======================================== */
.action-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    border-radius: var(--radius-sm);
    transition: all 0.2s;
    cursor: pointer;
}

.action-icon:hover {
    transform: scale(1.1);
}

.action-icon.edit {
    color: #007bff;
}

.action-icon.edit:hover {
    background: rgba(0, 123, 255, 0.1);
}

.action-icon.delete {
    color: #dc3545;
}

.action-icon.delete:hover {
    background: rgba(220, 53, 69, 0.1);
}

.action-icon.view {
    color: #28a745;
}

.action-icon.view:hover {
    background: rgba(40, 167, 69, 0.1);
}

/* ========================================
   LOGIN PAGE
   ======================================== */
.login-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: var(--spacing-lg);
}

.login-card {
    width: 100%;
    max-width: 400px;
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.login-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    padding: var(--spacing-xl);
    text-align: center;
}

.login-header h1 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.login-header p {
    opacity: 0.9;
    font-size: 0.95rem;
}

.login-body {
    padding: var(--spacing-xl);
}

.login-footer {
    padding: var(--spacing-lg);
    background: #f8f9fa;
    text-align: center;
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* ========================================
   FILTERS
   ======================================== */
.filters-card {
    background: #f8f9fa;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.filters-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

/* ========================================
   UTILITIES
   ======================================== */
.text-muted {
    color: var(--text-muted);
}

.text-center {
    text-align: center;
}

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

.text-nowrap {
    white-space: nowrap;
}

.font-weight-bold {
    font-weight: 600;
}

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }
.mb-5 { margin-bottom: var(--spacing-xl); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }
.mt-5 { margin-top: var(--spacing-xl); }

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 768px) {
    .container {
        padding: var(--spacing-md);
    }

    .navbar-nav {
        flex-direction: column;
        align-items: stretch;
    }

    .nav-link {
        justify-content: center;
    }

    .table {
        font-size: 0.875rem;
    }

    .table thead th,
    .table tbody td {
        padding: var(--spacing-sm);
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

    .btn-group {
        flex-direction: column;
    }

    .filters-row {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    body {
        font-size: 14px;
    }

    .card-header {
        font-size: 1rem;
    }

    .table-responsive {
        margin: 0;
        padding: 0;
    }
}

/* ========================================
   ANIMATIONS
   ======================================== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.3s ease-in-out;
}

/* ========================================
   HELP BOX
   ======================================== */
.help-box {
    background: linear-gradient(135deg, #fff9e6 0%, #fff3cc 100%);
    border: 1px solid #ffd966;
    border-left: 4px solid #ffaa00;
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
}

.help-box h4 {
    color: #cc8800;
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.help-box p {
    margin-bottom: var(--spacing-sm);
    line-height: 1.6;
}

.help-box strong {
    color: #994400;
}