/* ============================================
   FOOD COST MANAGER - DASHBOARD PRO DESIGN
   Stile moderno ispirato a Stripe/Linear
   ============================================ */

/* === CSS CUSTOM PROPERTIES === */
:root {
    /* Primary - Blu professionale */
    --primary-50: #eff6ff;
    --primary-100: #dbeafe;
    --primary-200: #bfdbfe;
    --primary-300: #93c5fd;
    --primary-400: #60a5fa;
    --primary-500: #3b82f6;
    --primary-600: #2563eb;
    --primary-700: #1d4ed8;
    --primary-800: #1e40af;
    --primary-900: #1e3a8a;

    /* Accent - Viola */
    --accent-500: #8b5cf6;
    --accent-600: #7c3aed;

    /* Success - Verde */
    --success-50: #ecfdf5;
    --success-100: #d1fae5;
    --success-500: #10b981;
    --success-600: #059669;

    /* Warning - Arancio */
    --warning-50: #fffbeb;
    --warning-100: #fef3c7;
    --warning-500: #f59e0b;
    --warning-600: #d97706;

    /* Danger - Rosso */
    --danger-50: #fef2f2;
    --danger-100: #fee2e2;
    --danger-500: #ef4444;
    --danger-600: #dc2626;

    /* Neutrals */
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;

    /* Semantic */
    --color-primary: var(--primary-600);
    --color-primary-hover: var(--primary-700);
    --color-success: var(--success-500);
    --color-warning: var(--warning-500);
    --color-danger: var(--danger-500);

    /* Layout */
    --sidebar-width: 260px;
    --sidebar-collapsed-width: 72px;
    --header-height: 64px;
    --sidebar-bg: #0f172a;
    --sidebar-text: #94a3b8;
    --sidebar-text-active: #ffffff;
    --sidebar-hover: rgba(255,255,255,0.05);
    --sidebar-active: rgba(59, 130, 246, 0.2);

    /* Cards */
    --card-bg: #ffffff;
    --card-border: #e5e7eb;
    --card-shadow: 0 1px 3px rgba(0,0,0,0.08);
    --card-shadow-hover: 0 4px 12px rgba(0,0,0,0.1);
    --card-radius: 12px;

    /* Typography */
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-mono: 'SF Mono', Monaco, 'Courier New', monospace;

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

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

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

body {
    font-family: var(--font-sans);
    background: var(--gray-50);
    color: var(--gray-900);
    line-height: 1.5;
    min-height: 100vh;
    overflow-x: hidden;
    max-width: 100vw;
}

/* === LAYOUT STRUCTURE === */
.app-layout {
    display: flex;
    min-height: 100vh;
    max-width: 100vw;
    overflow-x: hidden; /* hidden non clippa position:fixed */
}

/* === SIDEBAR === */
.sidebar {
    width: var(--sidebar-width);
    background: var(--sidebar-bg);
    color: var(--sidebar-text);
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    display: flex;
    flex-direction: column;
    z-index: 1000;
    transition: width var(--transition-base), transform 0.3s ease;
    overflow-x: hidden;
}

.sidebar-header {
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    min-height: 72px;
}

.sidebar-logo {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-600) 100%);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    flex-shrink: 0;
}

.sidebar-brand {
    display: flex;
    flex-direction: column;
}

.sidebar-brand-title {
    font-size: 16px;
    font-weight: 700;
    color: #fff;
    line-height: 1.2;
}

.sidebar-brand-subtitle {
    font-size: 12px;
    color: var(--gray-400);
}

/* Sidebar Navigation */
.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: 16px 12px;
}

.sidebar-nav::-webkit-scrollbar {
    width: 4px;
}

.sidebar-nav::-webkit-scrollbar-thumb {
    background: rgba(255,255,255,0.2);
    border-radius: 4px;
}

.nav-section {
    margin-bottom: 24px;
}

.nav-section-title {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--gray-500);
    padding: 0 12px;
    margin-bottom: 8px;
}

.nav-item {
    list-style: none;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    color: var(--sidebar-text);
    text-decoration: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.nav-link:hover {
    background: var(--sidebar-hover);
    color: var(--sidebar-text-active);
}

.nav-link.active {
    background: var(--sidebar-active);
    color: var(--sidebar-text-active);
}

.nav-link.active .nav-icon {
    color: var(--primary-400);
}

.nav-icon {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.nav-icon svg {
    width: 20px;
    height: 20px;
    stroke: currentColor;
    stroke-width: 1.5;
    fill: none;
}

.nav-badge {
    margin-left: auto;
    background: var(--danger-500);
    color: white;
    font-size: 11px;
    font-weight: 600;
    padding: 2px 6px;
    border-radius: 10px;
    min-width: 20px;
    text-align: center;
}

/* Sidebar Footer */
.sidebar-footer {
    padding: 16px;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.user-menu-sidebar {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border-radius: 8px;
    cursor: pointer;
    transition: background var(--transition-fast);
}

.user-menu-sidebar:hover {
    background: var(--sidebar-hover);
}

.user-avatar-sm {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-500), var(--accent-500));
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    color: white;
    font-size: 14px;
}

.user-info-sidebar {
    flex: 1;
    min-width: 0;
}

.user-name-sidebar {
    font-size: 14px;
    font-weight: 500;
    color: white;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.user-role-sidebar {
    font-size: 12px;
    color: var(--gray-400);
}

/* === MAIN CONTENT === */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden; /* hidden non clippa position:fixed */
    max-width: calc(100vw - var(--sidebar-width));
}

/* === HEADER === */
.top-header {
    height: var(--header-height);
    background: white;
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.page-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--gray-900);
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--gray-500);
}

.breadcrumb a {
    color: var(--gray-500);
    text-decoration: none;
}

.breadcrumb a:hover {
    color: var(--primary-600);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.header-search {
    position: relative;
}

.header-search input {
    width: 240px;
    padding: 8px 12px 8px 36px;
    border: 1px solid var(--gray-200);
    border-radius: 8px;
    font-size: 14px;
    background: var(--gray-50);
    transition: all var(--transition-fast);
}

.header-search input:focus {
    outline: none;
    border-color: var(--primary-500);
    background: white;
    box-shadow: 0 0 0 3px var(--primary-100);
}

.header-search svg {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    width: 16px;
    height: 16px;
    color: var(--gray-400);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.header-btn {
    width: 40px;
    height: 40px;
    border: none;
    background: transparent;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-500);
    transition: all var(--transition-fast);
    position: relative;
}

.header-btn:hover {
    background: var(--gray-100);
    color: var(--gray-700);
}

.header-btn .badge {
    position: absolute;
    top: 6px;
    right: 6px;
    width: 8px;
    height: 8px;
    background: var(--danger-500);
    border-radius: 50%;
    border: 2px solid white;
}

/* === PAGE CONTENT === */
.page-content {
    flex: 1;
    padding: 24px;
    overflow-x: hidden;
    max-width: 100%;
}

/* === KPI CARDS === */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin-bottom: 24px;
}

.kpi-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--card-radius);
    padding: 20px;
    transition: all var(--transition-fast);
}

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

.kpi-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
}

.kpi-label {
    font-size: 13px;
    font-weight: 500;
    color: var(--gray-500);
}

.kpi-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.kpi-icon.primary { background: var(--primary-100); color: var(--primary-600); }
.kpi-icon.success { background: var(--success-100); color: var(--success-600); }
.kpi-icon.warning { background: var(--warning-100); color: var(--warning-600); }
.kpi-icon.danger { background: var(--danger-100); color: var(--danger-600); }

.kpi-icon svg {
    width: 22px;
    height: 22px;
}

.kpi-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--gray-900);
    line-height: 1.2;
    margin-bottom: 4px;
}

.kpi-trend {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 13px;
    font-weight: 500;
}

.kpi-trend.up { color: var(--success-600); }
.kpi-trend.down { color: var(--danger-600); }
.kpi-trend.neutral { color: var(--gray-500); }

.kpi-trend svg {
    width: 16px;
    height: 16px;
}

.kpi-context {
    color: var(--gray-500);
    font-weight: 400;
}

/* === CARDS === */
.card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--card-radius);
    box-shadow: var(--card-shadow);
}

.card-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--gray-100);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--gray-900);
}

.card-body {
    padding: 20px;
}

.card-footer {
    padding: 16px 20px;
    border-top: 1px solid var(--gray-100);
    background: var(--gray-50);
    border-radius: 0 0 var(--card-radius) var(--card-radius);
}

/* === DASHBOARD GRID === */
.dashboard-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 24px;
}

@media (max-width: 1200px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
}

/* === QUICK ACTIONS === */
.quick-actions {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.quick-action-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: 10px;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    color: inherit;
}

.quick-action-btn:hover {
    border-color: var(--primary-300);
    background: var(--primary-50);
}

.quick-action-icon {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
}

.quick-action-icon.blue { background: var(--primary-100); }
.quick-action-icon.green { background: var(--success-100); }
.quick-action-icon.orange { background: var(--warning-100); }
.quick-action-icon.purple { background: #f3e8ff; }

.quick-action-text {
    flex: 1;
}

.quick-action-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--gray-900);
}

.quick-action-desc {
    font-size: 12px;
    color: var(--gray-500);
}

/* === ACTIVITY LIST === */
.activity-list {
    list-style: none;
}

.activity-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid var(--gray-100);
}

.activity-item:last-child {
    border-bottom: none;
}

.activity-icon {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    flex-shrink: 0;
}

.activity-icon.blue { background: var(--primary-100); }
.activity-icon.green { background: var(--success-100); }
.activity-icon.orange { background: var(--warning-100); }

.activity-content {
    flex: 1;
    min-width: 0;
}

.activity-text {
    font-size: 14px;
    color: var(--gray-700);
}

.activity-text strong {
    color: var(--gray-900);
}

.activity-time {
    font-size: 12px;
    color: var(--gray-400);
    margin-top: 2px;
}

/* === ALERTS === */
.alert-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.alert-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    border-radius: 8px;
    font-size: 14px;
}

.alert-item.warning {
    background: var(--warning-50);
    border: 1px solid var(--warning-100);
    color: var(--warning-600);
}

.alert-item.danger {
    background: var(--danger-50);
    border: 1px solid var(--danger-100);
    color: var(--danger-600);
}

.alert-item.info {
    background: var(--primary-50);
    border: 1px solid var(--primary-100);
    color: var(--primary-600);
}

.alert-icon {
    font-size: 18px;
}

/* === TABLES === */
.table-container {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--card-radius);
    overflow: hidden;
}

.table-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
}

.table-search {
    position: relative;
    flex: 1;
    max-width: 300px;
}

.table-search input {
    width: 100%;
    padding: 8px 12px 8px 36px;
    border: 1px solid var(--gray-200);
    border-radius: 8px;
    font-size: 14px;
}

.table-search input:focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px var(--primary-100);
}

.table-search svg {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    width: 16px;
    height: 16px;
    color: var(--gray-400);
}

.table-filters {
    display: flex;
    align-items: center;
    gap: 8px;
}

.filter-btn {
    padding: 8px 12px;
    border: 1px solid var(--gray-200);
    background: white;
    border-radius: 8px;
    font-size: 13px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: all var(--transition-fast);
}

.filter-btn:hover {
    border-color: var(--gray-300);
    background: var(--gray-50);
}

.filter-btn.active {
    border-color: var(--primary-500);
    background: var(--primary-50);
    color: var(--primary-600);
}

.table-modern {
    width: 100%;
    border-collapse: collapse;
}

.table-modern th {
    text-align: left;
    padding: 12px 16px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--gray-500);
    background: var(--gray-50);
    border-bottom: 1px solid var(--gray-200);
}

.table-modern td {
    padding: 14px 16px;
    font-size: 14px;
    border-bottom: 1px solid var(--gray-100);
    vertical-align: middle;
}

.table-modern tbody tr {
    transition: background var(--transition-fast);
}

.table-modern tbody tr:hover {
    background: var(--gray-50);
}

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

/* Table cell variants */
.cell-primary {
    font-weight: 600;
    color: var(--gray-900);
}

.cell-secondary {
    color: var(--gray-500);
    font-size: 13px;
}

.cell-mono {
    font-family: var(--font-mono);
    font-size: 13px;
}

/* === BADGES === */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
}

.badge-primary { background: var(--primary-100); color: var(--primary-700); }
.badge-success { background: var(--success-100); color: var(--success-600); }
.badge-warning { background: var(--warning-100); color: var(--warning-600); }
.badge-danger { background: var(--danger-100); color: var(--danger-600); }
.badge-gray { background: var(--gray-100); color: var(--gray-600); }

/* === BUTTONS === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 16px;
    font-size: 14px;
    font-weight: 500;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--primary-600);
    color: white;
}

.btn-primary:hover:not(:disabled) {
    background: var(--primary-700);
}

.btn-secondary {
    background: white;
    color: var(--gray-700);
    border: 1px solid var(--gray-300);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--gray-50);
    border-color: var(--gray-400);
}

.btn-danger {
    background: var(--danger-500);
    color: white;
}

.btn-danger:hover:not(:disabled) {
    background: var(--danger-600);
}

.btn-success {
    background: var(--success-500);
    color: white;
}

.btn-success:hover:not(:disabled) {
    background: var(--success-600);
}

.btn-ghost {
    background: transparent;
    color: var(--gray-600);
}

.btn-ghost:hover:not(:disabled) {
    background: var(--gray-100);
}

.btn-sm {
    padding: 6px 12px;
    font-size: 13px;
}

.btn-lg {
    padding: 12px 24px;
    font-size: 16px;
}

.btn-icon {
    width: 36px;
    height: 36px;
    padding: 0;
}

.btn-icon.sm {
    width: 32px;
    height: 32px;
}

/* === FORMS === */
.form-group {
    margin-bottom: 16px;
}

.form-label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--gray-700);
    margin-bottom: 6px;
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--gray-300);
    border-radius: 8px;
    font-size: 14px;
    transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px var(--primary-100);
}

.form-input.error,
.form-select.error,
.form-textarea.error {
    border-color: var(--danger-500);
}

.form-error {
    font-size: 13px;
    color: var(--danger-500);
    margin-top: 4px;
}

.form-hint {
    font-size: 13px;
    color: var(--gray-500);
    margin-top: 4px;
}

/* === MODALS === */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1100;
    padding: 20px;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

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

.modal {
    background: white;
    border-radius: 16px;
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow: hidden;
    transform: scale(0.95) translateY(20px);
    transition: transform var(--transition-base);
}

.modal-overlay.active .modal {
    transform: scale(1) translateY(0);
}

.modal-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-title {
    font-size: 18px;
    font-weight: 600;
}

.modal-close {
    width: 32px;
    height: 32px;
    border: none;
    background: transparent;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-400);
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: var(--gray-100);
    color: var(--gray-600);
}

.modal-body {
    padding: 24px;
    overflow-y: auto;
    max-height: 60vh;
}

.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--gray-200);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

/* === TOAST NOTIFICATIONS === */
.toast-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.toast {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 14px 16px;
    background: white;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    min-width: 320px;
    max-width: 420px;
    transform: translateX(100%);
    opacity: 0;
    transition: all var(--transition-base);
}

.toast.show {
    transform: translateX(0);
    opacity: 1;
}

.toast-icon {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.toast-icon svg {
    width: 14px;
    height: 14px;
}

.toast-success .toast-icon { background: var(--success-100); color: var(--success-600); }
.toast-error .toast-icon { background: var(--danger-100); color: var(--danger-600); }
.toast-warning .toast-icon { background: var(--warning-100); color: var(--warning-600); }
.toast-info .toast-icon { background: var(--primary-100); color: var(--primary-600); }

.toast-content {
    flex: 1;
}

.toast-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--gray-900);
}

.toast-message {
    font-size: 13px;
    color: var(--gray-600);
    margin-top: 2px;
}

.toast-close {
    width: 24px;
    height: 24px;
    border: none;
    background: transparent;
    cursor: pointer;
    color: var(--gray-400);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
}

.toast-close:hover {
    background: var(--gray-100);
    color: var(--gray-600);
}

/* === RESPONSIVE === */
@media (max-width: 1024px) {
    .sidebar {
        position: fixed;
        z-index: 1000;
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        box-shadow: none;
    }

    .sidebar.open {
        transform: translateX(0);
        box-shadow: 4px 0 20px rgba(0, 0, 0, 0.2);
    }

    /* Overlay when sidebar is open */
    .sidebar.open::after {
        content: '';
        position: fixed;
        top: 0;
        left: var(--sidebar-width);
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.4);
        z-index: -1;
    }

    .main-content {
        margin-left: 0;
        width: 100%;
        max-width: 100vw;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .top-header {
        padding: 12px 16px;
    }

    .page-title {
        font-size: 18px;
    }

    .header-search {
        display: none;
    }

    .page-content {
        padding: 16px;
    }
}

@media (max-width: 768px) {
    .kpi-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .kpi-card {
        padding: 16px;
    }

    .kpi-value {
        font-size: 24px;
    }

    .dashboard-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .quick-actions {
        grid-template-columns: 1fr;
    }

    .table-header {
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
    }

    .table-search {
        max-width: none;
    }

    .page-content {
        padding: 12px;
    }

    .top-header {
        padding: 10px 12px;
    }

    .page-title {
        font-size: 16px;
    }
}

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

    .page-content {
        padding: 8px;
    }

    .btn {
        padding: 10px 16px;
        font-size: 13px;
    }
}

/* === CHARTS PLACEHOLDER === */
.chart-container {
    height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gray-50);
    border-radius: 8px;
    color: var(--gray-400);
}

/* === EMPTY STATE === */
.empty-state {
    text-align: center;
    padding: 48px 24px;
}

.empty-state-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 16px;
    background: var(--gray-100);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: var(--gray-400);
}

.empty-state-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 8px;
}

.empty-state-desc {
    font-size: 14px;
    color: var(--gray-500);
    margin-bottom: 20px;
}

/* === SKELETON LOADING === */
.skeleton {
    background: linear-gradient(90deg, var(--gray-200) 25%, var(--gray-100) 50%, var(--gray-200) 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
    border-radius: 4px;
}

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

/* === UTILITY CLASSES === */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--gray-500); }
.text-success { color: var(--success-600); }
.text-danger { color: var(--danger-600); }
.text-warning { color: var(--warning-600); }
.font-mono { font-family: var(--font-mono); }
.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }

.mt-1 { margin-top: 4px; }
.mt-2 { margin-top: 8px; }
.mt-3 { margin-top: 12px; }
.mt-4 { margin-top: 16px; }
.mb-1 { margin-bottom: 4px; }
.mb-2 { margin-bottom: 8px; }
.mb-3 { margin-bottom: 12px; }
.mb-4 { margin-bottom: 16px; }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.gap-4 { gap: 16px; }

.hidden { display: none !important; }
.visible { display: block !important; }