/* ============================================
   E-ERP B2B Portal — Responsive CSS
   Breakpoints: 1200px (tablet), 768px (mobile), 480px (small)
   ============================================ */

/* === TABLET (max-width: 1200px) === */
@media (max-width: 1200px) {
    :root {
        --sidebar-width: 220px;
    }

    .page-content {
        padding: 16px 20px;
    }

    .stat-cards-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* === MOBILE (max-width: 768px) === */
@media (max-width: 768px) {
    .sidebar {
        width: var(--sidebar-collapsed);
    }

    .sidebar .brand-text,
    .sidebar .nav-item span,
    .sidebar .nav-section-title,
    .sidebar .nav-badge {
        display: none;
    }

    .sidebar .nav-item {
        justify-content: center;
        padding: 12px 0;
    }

    .main-content {
        margin-left: var(--sidebar-collapsed);
    }

    .page-content {
        padding: 12px 16px;
    }

    .app-header {
        padding: 0 16px;
    }

    .header-user .user-info { display: none; }

    .stat-cards-grid {
        grid-template-columns: 1fr;
    }

    .stat-card {
        padding: 14px;
    }

    .stat-card .stat-value {
        font-size: 18px;
    }

    .form-row {
        flex-direction: column;
        gap: 0;
    }

    .data-table {
        font-size: 12px;
    }

    .data-table thead th,
    .data-table tbody td {
        padding: 8px 8px;
    }

    .filter-bar {
        flex-direction: column;
        align-items: stretch;
    }

    .search-input-wrapper {
        max-width: 100%;
    }

    .card-body {
        padding: 14px;
    }

    .modal-dialog {
        margin: 8px;
        max-width: calc(100vw - 16px);
    }

    .confirm-dialog {
        width: calc(100vw - 32px);
        padding: 20px;
    }

    .pagination {
        flex-direction: column;
        gap: 8px;
        text-align: center;
    }

    /* Mobile sidebar overlay */
    .sidebar.mobile-open {
        width: var(--sidebar-width);
        z-index: 1000;
    }

    .sidebar.mobile-open .brand-text,
    .sidebar.mobile-open .nav-item span,
    .sidebar.mobile-open .nav-section-title,
    .sidebar.mobile-open .nav-badge {
        display: block;
    }

    .sidebar.mobile-open .nav-item {
        justify-content: flex-start;
        padding: 10px 20px;
    }

    .sidebar-backdrop {
        display: none;
        position: fixed;
        top: 0; left: 0; right: 0; bottom: 0;
        background: rgba(0,0,0,0.4);
        z-index: 999;
    }

    .sidebar-backdrop.show { display: block; }
}

/* === SMALL (max-width: 480px) === */
@media (max-width: 480px) {
    .header-left .page-title {
        font-size: 14px;
    }

    .header-left .page-subtitle {
        display: none;
    }

    .stat-card .stat-icon {
        width: 40px;
        height: 40px;
        font-size: 16px;
    }

    .stat-card .stat-value {
        font-size: 16px;
    }

    .btn {
        padding: 8px 14px;
        font-size: 12px;
    }

    .toast {
        min-width: auto;
        max-width: calc(100vw - 40px);
    }

    .toast-container {
        right: 10px;
        left: 10px;
    }

    .tab-list {
        overflow-x: auto;
    }

    .tab-item {
        padding: 8px 12px;
        font-size: 12px;
    }
}

/* Print styles are defined in print.css — no duplication here */