/* Modern Dark Theme with Gradients & Glassmorphism */
:root {
    /* Colors */
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --info: #3b82f6;
    
    /* Backgrounds */
    --bg-primary: #0a0e27;
    --bg-secondary: #111827;
    --bg-card: #1f2937;
    --bg-card-hover: #2d3748;
    
    /* Text */
    --text-primary: #f9fafb;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    
    /* Borders */
    --border-color: rgba(255, 255, 255, 0.1);
    --border-radius: 1rem;
    --border-radius-sm: 0.5rem;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background: linear-gradient(135deg, #0a0e27 0%, #1a1f3a 100%);
    color: var(--text-primary);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    min-height: 100vh;
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 50%, rgba(99, 102, 241, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(236, 72, 153, 0.08) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

/* Navbar */
.app-navbar {
    background: rgba(17, 24, 39, 0.8);
    backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
    z-index: 1000;
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.brand-icon {
    font-size: 1.8rem;
    filter: drop-shadow(0 0 10px rgba(99, 102, 241, 0.5));
}

.nav-link {
    color: var(--text-secondary) !important;
    font-weight: 500;
    transition: all 0.3s ease;
    padding: 0.5rem 1rem !important;
    border-radius: var(--border-radius-sm);
}

.nav-link:hover {
    color: var(--text-primary) !important;
    background: rgba(99, 102, 241, 0.1);
    transform: translateY(-2px);
}

.user-dropdown {
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.2);
}

.user-dropdown:hover {
    background: rgba(99, 102, 241, 0.2);
    border-color: rgba(99, 102, 241, 0.3);
}

.dropdown-menu {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    border-radius: var(--border-radius-sm);
}

.dropdown-item {
    color: var(--text-primary);
    transition: all 0.2s;
}

.dropdown-item:hover {
    background: rgba(99, 102, 241, 0.15);
    color: var(--text-primary);
}

/* Main Content */
.app-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
    position: relative;
    z-index: 1;
}

/* Cards */
.card {
    background: rgba(31, 41, 55, 0.6);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
    overflow: hidden;
    position: relative;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
    opacity: 0;
    transition: opacity 0.3s;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 48px rgba(99, 102, 241, 0.2);
    border-color: rgba(99, 102, 241, 0.3);
}

.card:hover::before {
    opacity: 1;
}

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

.card-header {
    background: rgba(99, 102, 241, 0.05);
    border-bottom: 1px solid var(--border-color);
    font-weight: 600;
}

/* KPI Cards */
.kpi-value {
    font-size: 2.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.kpi-value.positive {
    background: linear-gradient(135deg, #34d399, var(--success));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.kpi-value.negative {
    background: linear-gradient(135deg, #f87171, var(--danger));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.kpi-label {
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Buttons */
.btn {
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    padding: 0.625rem 1.5rem;
    transition: all 0.3s ease;
    border: none;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.6);
}

.btn-success {
    background: linear-gradient(135deg, #34d399, var(--success));
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.4);
}

.btn-danger {
    background: linear-gradient(135deg, #f87171, var(--danger));
    box-shadow: 0 4px 15px rgba(239, 68, 68, 0.4);
}

/* Forms */
.form-control, .form-select {
    background: rgba(17, 24, 39, 0.6);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: var(--border-radius-sm);
    padding: 0.75rem 1rem;
    transition: all 0.3s;
}

.form-control:focus, .form-select:focus {
    background: rgba(17, 24, 39, 0.8);
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
    color: var(--text-primary);
}

.form-label {
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
}

/* Tables */
.table {
    color: var(--text-primary);
}

.table-dark {
    --bs-table-bg: rgba(17, 24, 39, 0.6);
    --bs-table-striped-bg: rgba(31, 41, 55, 0.6);
    --bs-table-hover-bg: rgba(55, 65, 81, 0.6);
    --bs-table-border-color: var(--border-color);
}

.table thead th {
    border-bottom: 2px solid var(--border-color);
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
}

/* Badges */
.badge {
    padding: 0.35rem 0.75rem;
    border-radius: 0.5rem;
    font-weight: 700;
    font-size: 0.75rem;
}

.status-aperta {
    background: linear-gradient(135deg, #6b7280, #4b5563);
}

.status-vincita {
    background: linear-gradient(135deg, #34d399, var(--success));
}

.status-perdita {
    background: linear-gradient(135deg, #f87171, var(--danger));
}

.status-rimborsata {
    background: linear-gradient(135deg, #fbbf24, var(--warning));
}

.status-errore {
    background: linear-gradient(135deg, #a78bfa, #8b5cf6);
}

/* Alerts */
.alert {
    border-radius: var(--border-radius-sm);
    border: 1px solid;
    backdrop-filter: blur(10px);
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    border-color: var(--success);
    color: #34d399;
}

.alert-danger {
    background: rgba(239, 68, 68, 0.1);
    border-color: var(--danger);
    color: #f87171;
}

.alert-info {
    background: rgba(59, 130, 246, 0.1);
    border-color: var(--info);
    color: #60a5fa;
}

/* Modal */
.modal-content {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
}

.modal-header {
    border-bottom: 1px solid var(--border-color);
}

.modal-footer {
    border-top: 1px solid var(--border-color);
}

.btn-close {
    filter: invert(1) grayscale(100%) brightness(200%);
}

/* Auth Layout */
.auth-layout {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.auth-card {
    max-width: 450px;
    width: 100%;
}

.auth-card .card {
    border: 1px solid rgba(99, 102, 241, 0.2);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.card {
    animation: fadeInUp 0.6s ease-out;
}

/* Responsive */
@media (max-width: 992px) {
    .app-content {
        padding: 1.5rem;
    }
    
    .kpi-value {
        font-size: 2rem;
    }
}

@media (max-width: 768px) {
    .app-content {
        padding: 1rem;
    }
    
    .card {
        border-radius: 0.75rem;
    }
    
    .kpi-value {
        font-size: 1.75rem;
    }
    
    .navbar-brand {
        font-size: 1.25rem;
    }
}

/* Utilities */
.text-gradient {
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.glass-card {
    background: rgba(31, 41, 55, 0.4);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

/* Footer */
.app-footer {
    background: rgba(17, 24, 39, 0.6);
    backdrop-filter: blur(20px);
    border-top: 1px solid var(--border-color);
}

/* KPI Styles */
.kpi-label {
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.kpi-value {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.kpi-value.positive {
    background: linear-gradient(135deg, #34d399, var(--success));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.kpi-value.negative {
    background: linear-gradient(135deg, #f87171, var(--danger));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* DataTables Dark Theme */
.dataTables_wrapper {
    color: var(--text-primary);
}

.dataTables_wrapper .dataTables_length,
.dataTables_wrapper .dataTables_info {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.dataTables_wrapper .dataTables_length select {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    padding: 0.375rem 2rem 0.375rem 0.75rem;
    font-size: 0.875rem;
}

.dataTables_wrapper .dataTables_paginate {
    display: flex;
    justify-content: center;
    gap: 0.25rem;
    margin-top: 1rem;
}

.dataTables_wrapper .dataTables_paginate .paginate_button {
    background: transparent !important;
    border: 1px solid var(--border-color) !important;
    color: var(--text-secondary) !important;
    border-radius: 0.25rem !important;
    padding: 0.25rem 0.5rem !important;
    margin: 0 !important;
    transition: all 0.2s ease !important;
    font-weight: 500 !important;
    box-shadow: none !important;
    min-width: 32px;
    font-size: 0.875rem;
    text-align: center;
    line-height: 1.2;
}

.dataTables_wrapper .dataTables_paginate .paginate_button:hover {
    background: rgba(99, 102, 241, 0.1) !important;
    border-color: var(--primary) !important;
    color: var(--primary-light) !important;
    transform: none !important;
    box-shadow: none !important;
}

.dataTables_wrapper .dataTables_paginate .paginate_button.current {
    background: var(--primary) !important;
    border-color: var(--primary) !important;
    color: #fff !important;
    box-shadow: none !important;
    font-weight: 600 !important;
}

.dataTables_wrapper .dataTables_paginate .paginate_button.current:hover {
    background: var(--primary-dark) !important;
    border-color: var(--primary-dark) !important;
    transform: none !important;
}

.dataTables_wrapper .dataTables_paginate .paginate_button.disabled {
    opacity: 0.3 !important;
    cursor: not-allowed !important;
    box-shadow: none !important;
}

.dataTables_wrapper .dataTables_paginate .paginate_button.disabled:hover {
    background: transparent !important;
    border-color: var(--border-color) !important;
    color: var(--text-secondary) !important;
    transform: none !important;
    box-shadow: none !important;
}

/* Table Styling */
.table {
    color: var(--text-primary);
}

.table > thead {
    background: linear-gradient(135deg, #1f2937, #111827);
    border-bottom: 2px solid var(--primary);
}

.table > thead > tr > th {
    color: var(--text-primary);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
    padding: 0.35rem 0.5rem;
    border: 1px solid rgba(255, 255, 255, 0.03);
    text-align: center;
    vertical-align: middle;
}

.table > tbody > tr {
    background: rgba(31, 41, 55, 0.4);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
    transition: all 0.3s ease;
}

.table > tbody > tr:hover {
    background: rgba(45, 55, 72, 0.6);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.table > tbody > tr > td {
    padding: 0.35rem 0.5rem;
    border: 1px solid rgba(255, 255, 255, 0.03);
    text-align: center;
    vertical-align: middle;
    font-size: 0.875rem;
}

.table-dark {
    --bs-table-bg: transparent;
    --bs-table-striped-bg: transparent;
    --bs-table-hover-bg: rgba(45, 55, 72, 0.6);
}

.table-responsive {
    border-radius: var(--border-radius);
    overflow: hidden;
}

/* Badge centering and styling */
.badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 80px;
}

/* Compact action button */
.btn-action-compact {
    padding: 0.15rem 0.3rem !important;
    font-size: 0.875rem;
    line-height: 1;
    min-width: auto;
    width: 28px;
    height: 28px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn-action-compact i {
    margin: 0 !important;
}

/* Modal styling */
.modal-backdrop.show,
.modal-backdrop.fade,
.modal-backdrop {
    display: none !important;
}

.modal.show,
.modal.fade {
    background: rgba(0, 0, 0, 0.5) !important;
}

.modal {
    z-index: 1050 !important;
}

.modal-dialog {
    display: flex;
    align-items: center;
    min-height: calc(100vh - 3.5rem);
    position: relative;
    z-index: 1051;
}

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

.modal-header {
    background: linear-gradient(135deg, #1f2937, #111827);
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
}

.modal-title {
    color: var(--text-primary);
}

.modal-body {
    color: var(--text-primary);
}

.modal-footer {
    border-top: 1px solid var(--border-color);
}