/* Responsividade */

/* Tablets (768px - 1024px) */
@media (max-width: 1024px) {
    .main-container {
        flex-direction: column;
    }
    
    .left-panel, .right-panel {
        width: 100%;
        border-right: none;
        border-left: none;
        border-bottom: 1px solid var(--border-color);
        max-height: 300px;
        overflow-y: auto;
    }
    
    .center-area {
        flex: 1;
        min-height: 400px;
    }
    
    .tool-grid,
    .support-grid,
    .load-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .diagram-toggle {
        flex-wrap: nowrap;
        overflow-x: auto;
        padding-bottom: var(--spacing-sm);
    }
}

/* Smartphones (480px - 768px) */
@media (max-width: 768px) {
    .app-header {
        flex-wrap: wrap;
        gap: var(--spacing-sm);
    }
    
    .header-left,
    .header-center,
    .header-right {
        width: 100%;
        justify-content: center;
    }
    
    .header-center {
        order: 3;
        margin-top: var(--spacing-sm);
    }
    
    .structure-cards {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .feature-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .tool-grid,
    .support-grid,
    .load-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .panel-tabs {
        overflow-x: auto;
        flex-wrap: nowrap;
    }
    
    .tab-btn {
        white-space: nowrap;
        min-width: 80px;
    }
    
    .modal-content {
        width: 95%;
        max-height: 95vh;
    }
}

/* Smartphones pequenos (até 480px) */
@media (max-width: 480px) {
    .welcome-header h1 {
        font-size: 1.8rem;
    }
    
    .structure-cards,
    .feature-grid {
        grid-template-columns: 1fr;
    }
    
    .tool-grid,
    .support-grid,
    .load-grid {
        grid-template-columns: 1fr;
    }
    
    .diagram-toggle {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .canvas-controls {
        flex-direction: row;
        top: auto;
        bottom: 10px;
        right: 10px;
    }
    
    .coordinate-display {
        font-size: 0.7rem;
        bottom: 50px;
    }
    
    .app-controls {
        flex-direction: column;
        width: 100%;
    }
    
    .btn-control {
        width: 100%;
        justify-content: center;
    }
    
    .status-bar {
        flex-direction: column;
        gap: var(--spacing-xs);
        text-align: center;
    }
    
    .status-left,
    .status-center,
    .status-right {
        width: 100%;
    }
}

/* Ajustes para orientação paisagem em smartphones */
@media (max-height: 600px) and (orientation: landscape) {
    .welcome-screen {
        overflow-y: auto;
        padding: var(--spacing-md);
    }
    
    .welcome-container {
        max-height: 90vh;
        overflow-y: auto;
    }
    
    .main-container {
        flex-direction: row;
    }
    
    .left-panel,
    .right-panel {
        max-height: calc(100vh - 120px);
        overflow-y: auto;
    }
}

/* Impressão */
@media print {
    .app-header,
    .left-panel,
    .right-panel,
    .canvas-controls,
    .diagram-controls,
    .status-bar,
    .modal,
    .welcome-screen {
        display: none !important;
    }
    
    .main-interface {
        display: block !important;
    }
    
    .main-container {
        display: block;
        height: auto;
    }
    
    .center-area {
        display: block;
        height: auto;
    }
    
    #structure-canvas {
        width: 100%;
        height: auto;
        max-height: none;
    }
    
    body {
        background: white;
        color: black;
        height: auto;
        overflow: visible;
    }
}

/* High DPI displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    /* Ajustes para telas retina */
    .support-icon {
        background-size: 40px 40px;
    }
}

/* Dark mode (opcional) */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-primary: #121212;
        --bg-secondary: #1e1e1e;
        --bg-tertiary: #2d2d2d;
        --text-primary: #ffffff;
        --text-secondary: #a0a0a0;
        --border-color: #404040;
    }
    
    #structure-canvas {
        background: #2d2d2d;
    }
    
    .canvas-btn {
        background: #404040;
        color: white;
    }
}
/* Scroll horizontal para telas menores */
@media (max-width: 1200px) {
    .main-container {
        overflow-x: auto;
        overflow-y: hidden;
        min-width: 1024px; /* Largura mínima para evitar quebra */
    }
    
    .left-panel, .right-panel {
        flex-shrink: 0; /* Impede que os painéis encolham */
    }
    
    .center-area {
        min-width: 500px; /* Largura mínima para a área central */
    }
}

/* Para telas muito pequenas, ativar scroll horizontal na página inteira */
@media (max-width: 768px) {
    body {
        overflow-x: auto;
        min-width: 800px;
    }
    
    .main-interface {
        min-width: 800px;
    }
}

/* Ajustes para a tela de boas-vindas */
@media (max-width: 768px) {
    .welcome-container {
        overflow-x: hidden;
        overflow-y: auto;
        max-height: 90vh;
    }
    
    .structure-cards {
        grid-template-columns: 1fr;
        min-width: 300px;
    }
}

/* Adicione um indicador visual de scroll */
.main-container::-webkit-scrollbar {
    height: 8px;
}

.main-container::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
    border-radius: 4px;
}

.main-container::-webkit-scrollbar-thumb {
    background: var(--secondary-color);
    border-radius: 4px;
}

.main-container::-webkit-scrollbar-thumb:hover {
    background: #2980b9;
}