/* Responsivo (tablet / telemóvel) (parte de style.css) */
/* ============================================================
   RESPONSIVO
   ============================================================ */

/* Tablet / ecrãs médios */
@media (max-width: 1024px) {
    header { padding: 15px 20px; }
    main { padding: 20px; }
    .header-title { display: none; }
    .stats { grid-template-columns: repeat(2, 1fr); }
    .sidebar { width: 200px; }
}

/* Telemóvel */
@media (max-width: 768px) {
    /* Header compacto e com quebra */
    header {
        padding: 12px 15px;
        flex-wrap: wrap;
        gap: 10px;
    }
    .logo { height: 32px; }
    .header-logo img { height: 32px; max-width: 160px; }
    .header-title { display: none; }

    .user-info {
        gap: 8px;
        flex-wrap: wrap;
        justify-content: flex-end;
    }
    #user-name { display: none; }
    .header-actions { gap: 6px; }
    .header-actions .btn-sm {
        padding: 9px 11px;
        font-size: 11px;
    }
    /* Só ícones no header em ecrãs médios */
    .header-actions .btn-sm span { display: none; }
    .header-actions .btn-icon svg { width: 16px; height: 16px; }

    /* Sidebar vira off-canvas (drawer) */
    .layout { display: block; min-height: auto; }

    .sidebar {
        position: fixed;
        top: 80px;
        left: 0;
        height: 100vh;
        width: 250px;
        z-index: 50;
        transform: translateX(-100%);
        box-shadow: 4px 0 20px rgba(0,0,0,0.3);
        padding-top: 20px;
    }
    .sidebar.open { transform: translateX(0); }
    .sidebar.collapsed { width: 250px; }
    .sidebar.collapsed .tab-label { display: inline; }
    .sidebar.collapsed .nav-btn,
    .sidebar.collapsed .tab-btn {
        justify-content: flex-start;
        padding: 12px 16px;
    }
    .sidebar.collapsed .sidebar-collapse { font-size: 11px; }
    .sidebar.collapsed .sidebar-collapse::after { content: none; }
    .sidebar-collapse { display: none; }

    main { padding: 15px; }

    /* Dashboard */
    .dashboard-grid { grid-template-columns: 1fr; }
    .stats { grid-template-columns: 1fr 1fr; gap: 10px; }
    .stat-card { padding: 15px; gap: 12px; }
    .stat-icon { width: 42px; height: 42px; font-size: 18px; }
    .stat-info p { font-size: 24px; }

    /* Tabelas */
    .section-header {
        flex-direction: column;
        gap: 15px;
        align-items: stretch;
    }
    .search-box { width: 100%; flex-wrap: wrap; }
    .search-box input { flex: 1; min-width: 150px; }

    th, td { padding: 10px 12px; font-size: 13px; }

    /* Modais */
    .modal-content { padding: 25px 20px; }

    /* Importação */
    .upload-section, .preview-section, .data-section { padding: 20px; }
    .drop-zone { padding: 25px 15px; }
}

/* Telemóveis pequenos */
@media (max-width: 480px) {
    .stats { grid-template-columns: 1fr; }
    .header-actions { width: 100%; }
    .header-actions .btn { flex: 1; justify-content: center; }
    .logo-container { gap: 10px; }
    #theme-toggle { display: none; }
    .quick-actions .btn { width: 100%; }
}