/* ==========================================================================
   CONSULENZA TRICOLOGICA HIS - CSS VANILLA
   Sistema di gestione consulenze tricologiche Head In Spa
   ========================================================================== */

/* CSS Reset */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* CSS Variables */
:root {
    /* Colors - Palette professionale per settore tricologico */
    --color-primary: #2C5F7C;
    --color-primary-light: #3A7A9F;
    --color-primary-dark: #1E4158;

    --color-secondary: #7C9BA5;
    --color-accent: #A67C52;

    --color-success: #28A745;
    --color-warning: #FFC107;
    --color-danger: #DC3545;
    --color-info: #17A2B8;

    --color-text: #2C3E50;
    --color-text-light: #6C757D;
    --color-text-muted: #95A5A6;

    --color-bg: #F8F9FA;
    --color-bg-dark: #E9ECEF;
    --color-white: #FFFFFF;
    --color-border: #DEE2E6;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;

    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;

    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 200ms ease-in-out;
    --transition-slow: 300ms ease-in-out;
}

/* Base Styles */
html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-semibold);
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

p {
    margin-bottom: var(--spacing-md);
}

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

a:hover {
    color: var(--color-primary-dark);
}

/* Layout */
.app-container {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 260px;
    background-color: var(--color-white);
    border-right: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
    z-index: 100;
}

.sidebar-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
    background-color: var(--color-primary);
    color: var(--color-white);
}

.sidebar-header h1 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-xs);
    color: var(--color-white);
}

.sidebar-header .subtitle {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.8);
    margin: 0;
}

.sidebar-nav {
    flex: 1;
    padding: var(--spacing-md) 0;
}

.nav-item {
    display: block;
    padding: var(--spacing-md) var(--spacing-lg);
    color: var(--color-text);
    transition: all var(--transition-fast);
    border-left: 3px solid transparent;
}

.nav-item:hover {
    background-color: var(--color-bg);
    border-left-color: var(--color-primary);
    text-decoration: none;
}

.nav-item.active {
    background-color: var(--color-bg);
    border-left-color: var(--color-primary);
    color: var(--color-primary);
    font-weight: var(--font-weight-medium);
}

.nav-item-icon {
    display: inline-block;
    width: 20px;
    margin-right: var(--spacing-sm);
}

.main-content {
    margin-left: 260px;
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.topbar {
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-md) var(--spacing-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 50;
}

.topbar-title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-semibold);
    margin: 0;
}

.topbar-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.user-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background-color: var(--color-primary);
    color: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-weight-semibold);
}

.content-wrapper {
    flex: 1;
    padding: var(--spacing-2xl);
}

/* Cards */
.card {
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--spacing-lg);
    overflow: hidden;
}

.card-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    margin: 0;
}

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

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

/* Stats Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.stat-card {
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-2xl);
}

.stat-icon.primary { background-color: rgba(44, 95, 124, 0.1); color: var(--color-primary); }
.stat-icon.success { background-color: rgba(40, 167, 69, 0.1); color: var(--color-success); }
.stat-icon.warning { background-color: rgba(255, 193, 7, 0.1); color: var(--color-warning); }
.stat-icon.info { background-color: rgba(23, 162, 184, 0.1); color: var(--color-info); }

.stat-content h3 {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-xs);
    color: var(--color-text);
}

.stat-content p {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    margin: 0;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    text-align: center;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    line-height: 1.5;
}

.btn:hover {
    text-decoration: none;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn:active {
    transform: translateY(0);
}

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

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

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

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

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

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

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

.btn-sm {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: var(--font-size-sm);
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-lg);
}

.btn-block {
    display: block;
    width: 100%;
}

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

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

.form-label.required::after {
    content: " *";
    color: var(--color-danger);
}

.form-control {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-base);
    line-height: 1.5;
    color: var(--color-text);
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(44, 95, 124, 0.1);
}

.form-control.is-invalid {
    border-color: var(--color-danger);
}

.form-control.is-invalid:focus {
    box-shadow: 0 0 0 3px rgba(220, 53, 69, 0.1);
}

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

select.form-control {
    cursor: pointer;
}

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

.invalid-feedback {
    display: block;
    margin-top: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--color-danger);
}

.form-check {
    display: flex;
    align-items: center;
    margin-bottom: var(--spacing-sm);
}

.form-check-input {
    margin-right: var(--spacing-sm);
    cursor: pointer;
}

.form-check-label {
    cursor: pointer;
}

/* Form Input, Textarea, Select */
.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: var(--font-size-base);
    line-height: 1.5;
    color: var(--color-text);
    background-color: #FFFFFF;
    background-image: linear-gradient(180deg, #FAFBFC 0%, #FFFFFF 100%);
    border: 1px solid #D1D5DB;
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.form-input:hover,
.form-textarea:hover,
.form-select:hover {
    border-color: #9CA3AF;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.08);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--color-primary);
    background-color: #FFFFFF;
    background-image: none;
    box-shadow: 0 0 0 3px rgba(44, 95, 124, 0.1), 0 2px 4px rgba(0, 0, 0, 0.08);
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: #9CA3AF;
    opacity: 1;
}

.form-textarea {
    min-height: 120px;
    resize: vertical;
}

.form-select {
    cursor: pointer;
    padding-right: 2.5rem;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='%236B7280'%3E%3Cpath fill-rule='evenodd' d='M5.293 7.293a1 1 0 011.414 0L10 10.586l3.293-3.293a1 1 0 111.414 1.414l-4 4a1 1 0 01-1.414 0l-4-4a1 1 0 010-1.414z' clip-rule='evenodd'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 1.25rem;
    appearance: none;
}

/* Form Row (for horizontal layouts) */
.form-row {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.form-row .form-group {
    flex: 1;
    margin-bottom: 0;
}

/* Form Actions (buttons area) */
.form-actions {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
}

/* Form Help Text */
.form-help {
    display: block;
    margin-top: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: #6B7280;
    font-style: italic;
}

/* Checkbox and Radio Groups */
.checkbox-group,
.radio-group {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) 0;
}

.checkbox-label,
.radio-label {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    padding: 0.5rem 1rem;
    background: #F9FAFB;
    border: 1px solid #E5E7EB;
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
}

.checkbox-label:hover,
.radio-label:hover {
    background: #F3F4F6;
    border-color: #D1D5DB;
}

.checkbox-label input[type="checkbox"],
.radio-label input[type="radio"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    margin: 0;
}

.checkbox-label input[type="checkbox"]:checked + span,
.radio-label input[type="radio"]:checked + span {
    font-weight: var(--font-weight-medium);
    color: var(--color-primary);
}

/* Tables */
.table-responsive {
    overflow-x: auto;
    margin-bottom: var(--spacing-lg);
}

.table {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--color-white);
}

.table thead {
    background-color: var(--color-bg);
}

.table th {
    padding: var(--spacing-md);
    text-align: left;
    font-weight: var(--font-weight-semibold);
    color: var(--color-text);
    border-bottom: 2px solid var(--color-border);
}

.table td {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
}

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

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

.table-actions {
    display: flex;
    gap: var(--spacing-sm);
}

/* Badges */
.badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-primary { background-color: var(--color-primary); color: var(--color-white); }
.badge-success { background-color: var(--color-success); color: var(--color-white); }
.badge-warning { background-color: var(--color-warning); color: var(--color-text); }
.badge-danger { background-color: var(--color-danger); color: var(--color-white); }
.badge-info { background-color: var(--color-info); color: var(--color-white); }

/* Alerts */
.alert {
    padding: var(--spacing-md) var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    border-radius: var(--radius-md);
    border-left: 4px solid;
}

.alert-success {
    background-color: rgba(40, 167, 69, 0.1);
    border-left-color: var(--color-success);
    color: #155724;
}

.alert-danger {
    background-color: rgba(220, 53, 69, 0.1);
    border-left-color: var(--color-danger);
    color: #721c24;
}

.alert-warning {
    background-color: rgba(255, 193, 7, 0.1);
    border-left-color: var(--color-warning);
    color: #856404;
}

.alert-info {
    background-color: rgba(23, 162, 184, 0.1);
    border-left-color: var(--color-info);
    color: #0c5460;
}

/* Pagination */
.pagination {
    display: flex;
    gap: var(--spacing-xs);
    justify-content: center;
    margin-top: var(--spacing-lg);
}

.page-link {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-primary);
    transition: all var(--transition-fast);
}

.page-link:hover {
    background-color: var(--color-bg);
    text-decoration: none;
}

.page-link.active {
    background-color: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
}

/* Utilities */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--color-text-muted); }
.text-success { color: var(--color-success); }
.text-danger { color: var(--color-danger); }
.text-warning { color: var(--color-warning); }
.text-info { color: var(--color-info); }

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

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

.d-flex { display: flex; }
.align-items-center { align-items: center; }
.justify-content-between { justify-content: space-between; }
.gap-1 { gap: var(--spacing-sm); }
.gap-2 { gap: var(--spacing-md); }
.gap-3 { gap: var(--spacing-lg); }

/* ========================================
   RESPONSIVE DESIGN - MOBILE FIRST
   ======================================== */

/* Extra Small Devices (Smartphones portrait - < 480px) */
@media (max-width: 480px) {
    /* Typography - Fluid responsive */
    h1 { font-size: clamp(1.5rem, 5vw, 2.25rem); }
    h2 { font-size: clamp(1.25rem, 4vw, 1.875rem); }
    h3 { font-size: clamp(1.125rem, 3.5vw, 1.5rem); }
    h4 { font-size: clamp(1rem, 3vw, 1.25rem); }

    /* Ultra-tight spacing for very small screens */
    .content-wrapper {
        padding: 0.75rem !important;
    }

    .card {
        margin-bottom: 0.75rem;
    }

    .card-body,
    .card-header,
    .card-footer {
        padding: 0.75rem !important;
    }

    .form-section {
        padding: 0.75rem !important;
        margin-bottom: 0.75rem;
    }

    /* Form actions - Full width stacked buttons */
    .card-footer {
        flex-direction: column !important;
        gap: 0.5rem !important;
    }

    .card-footer .btn {
        width: 100% !important;
    }

    /* Stats grid - Single column */
    .stats-grid {
        grid-template-columns: 1fr !important;
    }

    /* Foto/Gallery grid - Single column */
    #preview-grid,
    .gallery-grid {
        grid-template-columns: 1fr !important;
    }
}

/* Small Devices (Smartphones landscape - < 576px) */
@media (max-width: 576px) {
    /* Touch-friendly button sizing */
    .btn {
        min-height: 44px;
        padding: 0.75rem 1.5rem;
        font-size: var(--font-size-base);
    }

    .btn-sm {
        min-height: 44px;
        padding: 0.75rem 1rem;
        font-size: var(--font-size-sm);
    }

    /* Touch-friendly input sizing */
    .form-control,
    .form-input,
    .form-textarea,
    .form-select {
        padding: 1rem !important;
        font-size: 16px !important; /* Prevents iOS zoom */
        min-height: 44px;
    }

    /* Larger checkboxes for touch */
    .checkbox-label input[type="checkbox"],
    .radio-label input[type="radio"] {
        width: 24px !important;
        height: 24px !important;
        min-width: 24px;
        min-height: 24px;
    }

    /* Touch-friendly remove buttons */
    .btn-remove-fase,
    .btn-remove-prodotto,
    button[onclick*="rimuovi"] {
        min-width: 44px !important;
        min-height: 44px !important;
        padding: 0.5rem !important;
        font-size: 1.25rem !important;
    }

    /* Form actions - Stacked buttons */
    .form-actions,
    .card-footer[style*="flex"] {
        flex-direction: column !important;
    }

    .form-actions .btn,
    .card-footer .btn {
        width: 100%;
        margin: 0.25rem 0;
    }

    /* Modal responsive */
    .modal-content,
    [style*="max-width: 500px"] {
        max-width: 95% !important;
        margin: 1rem !important;
    }

    /* Stats grid - 2 columns max */
    .stats-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)) !important;
    }
}

/* Medium Devices (Tablet portrait - < 768px) */
@media (max-width: 768px) {
    /* Sidebar - Hidden by default, toggle with .active */
    .sidebar {
        transform: translateX(-100%);
        transition: transform var(--transition-base);
        z-index: 1000;
    }

    .sidebar.active {
        transform: translateX(0);
        box-shadow: var(--shadow-lg);
    }

    /* Main content - Full width */
    .main-content {
        margin-left: 0 !important;
        width: 100%;
    }

    /* Content padding */
    .content-wrapper {
        padding: 1rem !important;
    }

    .card-body,
    .form-section {
        padding: 1rem !important;
    }

    /* Stats grid - Single column on tablet portrait */
    .stats-grid {
        grid-template-columns: 1fr;
    }

    /* Table - Smaller font */
    .table-responsive {
        font-size: var(--font-size-sm);
    }

    .table-responsive table {
        min-width: 600px; /* Force horizontal scroll */
    }

    /* Hide desktop table, show mobile cards */
    .desktop-table {
        display: none !important;
    }

    .mobile-cards {
        display: block !important;
    }

    /* Form rows - Stack on mobile */
    .form-row,
    [style*="grid-template-columns"][style*="repeat"] {
        grid-template-columns: 1fr !important;
    }

    /* Detail grids - Stack columns */
    .cliente-detail-grid,
    .consulenza-detail-grid,
    [style*="grid-template-columns: 1fr 2fr"],
    [style*="grid-template-columns: 2fr 1fr"] {
        grid-template-columns: 1fr !important;
    }

    /* Avatar - Smaller on mobile */
    .avatar-cliente,
    [style*="width: 100px"][style*="height: 100px"] {
        width: 80px !important;
        height: 80px !important;
    }

    /* Gallery - 2 columns on mobile */
    .gallery-grid,
    [style*="repeat(auto-fill, minmax(250px"] {
        grid-template-columns: repeat(2, 1fr) !important;
    }

    /* Search forms - Stack on mobile */
    .search-form,
    [style*="grid-template-columns: 1fr auto"] {
        grid-template-columns: 1fr !important;
    }

    .search-form .btn {
        width: 100%;
        margin-top: 0.5rem;
    }

    /* Topbar - Responsive */
    .topbar {
        padding: 0.75rem 1rem !important;
    }

    .topbar .user-info {
        flex-direction: column;
        align-items: flex-start;
    }

    /* Hide text labels on very small screens */
    .hide-mobile {
        display: none !important;
    }
}

/* Large Devices (Tablet landscape - < 1024px) */
@media (max-width: 1024px) {
    /* Sidebar - Slightly narrower */
    .sidebar {
        width: 220px;
    }

    .main-content {
        margin-left: 220px;
    }

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

    /* Form rows - 2 columns max */
    .form-row {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
}

/* Min-width media queries for progressive enhancement */

/* Small and up (>= 576px) */
@media (min-width: 576px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    #preview-grid {
        grid-template-columns: repeat(2, 1fr) !important;
    }
}

/* Medium and up (>= 768px) */
@media (min-width: 768px) {
    .form-row {
        grid-template-columns: repeat(2, 1fr);
    }

    .desktop-table {
        display: block !important;
    }

    .mobile-cards {
        display: none !important;
    }
}

/* Large and up (>= 1024px) */
@media (min-width: 1024px) {
    .stats-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .form-row {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }

    #preview-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)) !important;
    }
}

/* ========================================
   HAMBURGER MENU & MOBILE NAVIGATION
   ======================================== */

/* Hamburger Menu Button */
.hamburger-menu {
    display: none; /* Hidden on desktop */
    background: none;
    border: none;
    padding: 0.5rem;
    cursor: pointer;
    color: var(--color-text);
    transition: all var(--transition-fast);
    width: 44px;
    height: 44px;
    align-items: center;
    justify-content: center;
}

.hamburger-menu svg {
    width: 24px;
    height: 24px;
}

.hamburger-menu:hover {
    background-color: var(--color-bg);
    border-radius: var(--radius-md);
}

.hamburger-menu:active {
    transform: scale(0.95);
}

/* Show hamburger on mobile */
@media (max-width: 768px) {
    .hamburger-menu {
        display: flex;
    }
}

/* Sidebar Overlay Backdrop */
.sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), visibility var(--transition-base);
}

.sidebar-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* Sidebar Mobile Enhancements */
@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        top: 0;
        left: 0;
        height: 100vh;
        overflow-y: auto;
    }
}

/* Loading Spinner */
.spinner {
    border: 3px solid var(--color-bg);
    border-top: 3px solid var(--color-primary);
    border-radius: var(--radius-full);
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: var(--spacing-xl) auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Login Page Specific */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
}

.login-card {
    background-color: var(--color-white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    padding: var(--spacing-2xl);
    width: 100%;
    max-width: 420px;
}

.login-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.login-logo {
    width: 80px;
    height: 80px;
    background-color: var(--color-primary);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-lg);
    font-size: var(--font-size-3xl);
    color: var(--color-white);
    font-weight: var(--font-weight-bold);
}

.login-title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-xs);
}

.login-subtitle {
    color: var(--color-text-light);
    font-size: var(--font-size-sm);
}

/* ================================
   AJAX & DYNAMIC INTERACTIONS
   ================================ */

/* Loading State */
.form-loading {
    opacity: 0.6;
    pointer-events: none;
}

/* AJAX Alert Messages */
.ajax-alert {
    padding: 1rem 1.5rem;
    margin-bottom: 1.5rem;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    animation: slideInTop 0.3s ease-out;
    cursor: pointer;
    transition: all 0.3s ease;
}

.ajax-alert:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.ajax-alert.alert-success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.ajax-alert.alert-error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.ajax-alert.fade-out {
    animation: slideOutTop 0.3s ease-out;
    opacity: 0;
}

.alert-icon {
    font-size: 1.25rem;
    font-weight: bold;
}

.alert-message {
    flex: 1;
    font-size: var(--font-size-base);
}

/* Mini Alerts (for toggle actions) */
.mini-alert {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 12px 20px;
    color: white;
    border-radius: 6px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    z-index: 10000;
    animation: slideInRight 0.3s ease-out;
}

.mini-alert-success {
    background: #28A745;
}

.mini-alert-error {
    background: #DC3545;
}

/* Button Spinner */
.btn-spinner {
    display: inline-block;
    width: 14px;
    height: 14px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
    margin-right: 8px;
    vertical-align: middle;
}

/* Form Validation Errors */
.error-message {
    color: var(--color-danger);
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-xs);
    display: block;
    font-weight: 500;
}

.form-input.error,
.form-textarea.error,
.form-select.error {
    border-color: var(--color-danger);
    background-color: rgba(220, 53, 69, 0.05);
}

.form-input.error:focus,
.form-textarea.error:focus,
.form-select.error:focus {
    border-color: var(--color-danger);
    box-shadow: 0 0 0 3px rgba(220, 53, 69, 0.1);
}

/* Animations */
@keyframes slideInTop {
    from {
        transform: translateY(-20px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

@keyframes slideOutTop {
    from {
        transform: translateY(0);
        opacity: 1;
    }
    to {
        transform: translateY(-20px);
        opacity: 0;
    }
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOutRight {
    from {
        transform: translateX(0);
        opacity: 1;
    }
    to {
        transform: translateX(100%);
        opacity: 0;
    }
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Table Row Fade Out */
tr.fade-out {
    opacity: 0;
    transition: opacity 0.3s ease-out;
}

/* ================================
   PROFESSIONAL ICONS (SVG)
   ================================ */

.nav-item-icon svg,
.icon svg {
    width: 20px;
    height: 20px;
    stroke: currentColor;
    fill: none;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.nav-item-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
}

/* ================================
   LIGHT BACKGROUNDS & SECTIONS
   ================================ */

/* Card with subtle background */
.card {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.card-body {
    padding: var(--spacing-xl);
    background: #FAFBFC;
}

/* Form sections with light backgrounds */
.form-section {
    background: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
    border: 1px solid #E8EBF0;
}

.form-section-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--color-primary);
    display: inline-block;
}

/* Alternate row backgrounds for better readability */
.form-row:nth-child(even) .form-group {
    background: #F7F9FC;
    padding: var(--spacing-md);
    border-radius: var(--radius-sm);
}

/* Info boxes with light backgrounds */
.info-box {
    background: #F0F7FF;
    border-left: 4px solid #3B82F6;
    padding: var(--spacing-md);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-md);
}

.info-box-success {
    background: #F0FDF4;
    border-left-color: #10B981;
}

.info-box-warning {
    background: #FFFBEB;
    border-left-color: #F59E0B;
}

.info-box-danger {
    background: #FEF2F2;
    border-left-color: #EF4444;
}

/* Stats cards with gradient backgrounds */
.stat-card {
    background: linear-gradient(135deg, #667EEA 0%, #764BA2 100%);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    color: white;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.stat-card-green {
    background: linear-gradient(135deg, #10B981 0%, #059669 100%);
}

.stat-card-blue {
    background: linear-gradient(135deg, #3B82F6 0%, #2563EB 100%);
}

.stat-card-purple {
    background: linear-gradient(135deg, #8B5CF6 0%, #7C3AED 100%);
}

.stat-card-orange {
    background: linear-gradient(135deg, #F59E0B 0%, #D97706 100%);
}

/* Fix: Forza colore bianco per numeri e testo in stat-card colorate */
.stat-card h3,
.stat-card-blue h3,
.stat-card-green h3,
.stat-card-purple h3,
.stat-card-orange h3 {
    color: white !important;
}

.stat-card p,
.stat-card-blue p,
.stat-card-green p,
.stat-card-purple p,
.stat-card-orange p {
    color: rgba(255, 255, 255, 0.9) !important;
}

/* Table with alternating row backgrounds */
.table-striped tbody tr:nth-child(odd) {
    background: #F9FAFB;
}

.table-striped tbody tr:nth-child(even) {
    background: var(--color-white);
}

.table-striped tbody tr:hover {
    background: #F0F7FF;
    transition: background 0.2s ease;
}

/* Content wrapper with subtle background */
.content-wrapper {
    background: #F5F7FA;
    min-height: calc(100vh - 60px);
}

/* Empty state with light background */
.empty-state {
    background: #FAFBFC;
    padding: var(--spacing-2xl);
    border-radius: var(--radius-lg);
    text-align: center;
    border: 2px dashed #DDE1E6;
}

/* ========================================
   AJAX FORMS - Feedback e Loading States
   ======================================== */

/* AJAX Alert Messages */
.ajax-alert {
    position: relative;
    padding: 1rem 1.5rem;
    margin-bottom: 1.5rem;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    animation: slideInDown 0.3s ease-out;
    cursor: pointer;
    transition: opacity 0.3s ease;
}

.ajax-alert.fade-out {
    opacity: 0;
    transform: translateY(-10px);
}

.ajax-alert .alert-icon {
    font-size: 1.25rem;
    font-weight: bold;
    flex-shrink: 0;
}

.ajax-alert .alert-message {
    flex: 1;
}

.alert-success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-success .alert-icon {
    color: #28a745;
}

.alert-error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.alert-error .alert-icon {
    color: #dc3545;
}

.alert-info {
    background-color: #d1ecf1;
    color: #0c5460;
    border: 1px solid #bee5eb;
}

.alert-warning {
    background-color: #fff3cd;
    color: #856404;
    border: 1px solid #ffeeba;
}

@keyframes slideInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Form Loading State */
.form-loading {
    opacity: 0.6;
    pointer-events: none;
    position: relative;
}

.form-loading::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.5);
    z-index: 1;
}

/* Validation Error Messages */
.error-message {
    display: block;
    color: var(--color-danger);
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-xs);
    font-weight: 500;
}

.form-input.error,
.form-textarea.error,
.form-select.error {
    border-color: var(--color-danger);
    background-color: rgba(220, 53, 69, 0.05);
    box-shadow: 0 0 0 3px rgba(220, 53, 69, 0.1);
}

.form-input.error:focus,
.form-textarea.error:focus,
.form-select.error:focus {
    border-color: var(--color-danger);
    box-shadow: 0 0 0 3px rgba(220, 53, 69, 0.2);
}

/* Button Spinner */
.btn-spinner {
    display: inline-block;
    width: 14px;
    height: 14px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
    margin-right: 0.5rem;
    vertical-align: middle;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Loading Overlay for Cards */
.card-loading {
    position: relative;
    pointer-events: none;
}

.card-loading::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
}

/* Table Row Fade Out (for delete) */
tr.fade-out {
    opacity: 0;
    transform: translateX(-20px);
    transition: all 0.3s ease;
}

/* Disabled State Styling */
button:disabled,
input:disabled,
textarea:disabled,
select:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Success State for Forms */
.form-success {
    border: 2px solid var(--color-success);
    background-color: rgba(40, 167, 69, 0.05);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
}

/* AJAX Modal Overlay */
.ajax-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    animation: fadeIn 0.2s ease forwards;
}

@keyframes fadeIn {
    to {
        opacity: 1;
    }
}

.ajax-modal-overlay.fade-out {
    animation: fadeOut 0.2s ease forwards;
}

@keyframes fadeOut {
    to {
        opacity: 0;
    }
}

/* Inline Success Feedback */
.inline-success {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-success);
    font-size: var(--font-size-sm);
    font-weight: 500;
    animation: slideInRight 0.3s ease-out;
}

.inline-success::before {
    content: '✓';
    font-size: 1rem;
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(-10px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Progress Bar for Multi-Step Forms */
.ajax-progress {
    height: 4px;
    background: #E5E7EB;
    border-radius: 2px;
    overflow: hidden;
    margin-bottom: var(--spacing-lg);
}

.ajax-progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary), var(--color-success));
    transition: width 0.3s ease;
}

/* Skeleton Loading */
.skeleton {
    background: linear-gradient(90deg, #F0F0F0 25%, #E0E0E0 50%, #F0F0F0 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s ease-in-out infinite;
    border-radius: var(--radius-sm);
}

@keyframes skeleton-loading {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

.skeleton-text {
    height: 1rem;
    margin-bottom: 0.5rem;
}

.skeleton-title {
    height: 1.5rem;
    width: 60%;
    margin-bottom: 1rem;
}

.skeleton-button {
    height: 2.5rem;
    width: 120px;
}