/* ===================================
   RESET E VARIÁVEIS
   =================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Cores Principais */
    --primary: #0D6EFD;
    --primary-dark: #0b5ed7;
    --primary-light: #3d8bfd;
    --success: #198754;
    --success-dark: #157347;
    --danger: #dc3545;
    --warning: #ffc107;
    
    /* Cores Neutras */
    --white: #FFFFFF;
    --gray-50: #F8F9FA;
    --gray-100: #E9ECEF;
    --gray-200: #DEE2E6;
    --gray-300: #CED4DA;
    --gray-400: #ADB5BD;
    --gray-500: #6C757D;
    --gray-600: #495057;
    --gray-700: #343A40;
    --gray-800: #212529;
    
    /* Sombras */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Espaçamentos */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    /* Transições */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===================================
   ESTILOS GLOBAIS
   =================================== */
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: var(--gray-800);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
    -webkit-touch-callout: none;
    touch-action: manipulation;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-lg);
}

/* ===================================
   HEADER
   =================================== */
.header {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    box-shadow: var(--shadow-lg);
    animation: fadeInDown 0.6s ease-out;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.header-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.btn-icon {
    width: 44px;
    height: 44px;
    border: 2px solid var(--gray-200);
    background: var(--white);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    color: var(--gray-600);
}

.btn-icon:hover {
    border-color: var(--primary);
    background: var(--gray-50);
    color: var(--primary);
    transform: translateY(-2px);
}

.logo svg {
    flex-shrink: 0;
}

.logo-text {
    text-align: left;
}

.logo h1 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--gray-800);
    line-height: 1.2;
    margin: 0;
}

.logo .brand {
    display: block;
    font-size: 0.875rem;
    color: var(--primary);
    font-weight: 600;
    margin-top: 0.25rem;
}

/* ===================================
   CARDS
   =================================== */
.card {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--spacing-xl);
    overflow: hidden;
    transition: var(--transition);
}

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

.card-header {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    padding: var(--spacing-lg);
    border-bottom: 3px solid var(--primary-dark);
}

.card-header h2 {
    color: var(--white);
    font-size: 1.25rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin: 0;
}

.card-header h2 svg {
    flex-shrink: 0;
}

.card-body {
    padding: var(--spacing-xl);
}

/* ===================================
   FORMULÁRIOS
   =================================== */
.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group.full-width {
    grid-column: 1 / -1;
}

.form-group label {
    font-weight: 500;
    color: var(--gray-700);
    margin-bottom: var(--spacing-sm);
    font-size: 0.875rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 0.75rem;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-family: inherit;
    transition: var(--transition);
    background: var(--white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--gray-400);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

/* ===================================
   BOTÕES
   =================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 0.875rem 1.5rem;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    white-space: nowrap;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
    user-select: none;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--white);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-primary:active:not(:disabled) {
    transform: translateY(0);
}

.btn-success {
    background: linear-gradient(135deg, #25D366 0%, #128C7E 100%);
    color: var(--white);
    box-shadow: var(--shadow-md);
}

.btn-success:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: var(--gray-100);
    color: var(--gray-700);
    border: 2px solid var(--gray-300);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--gray-200);
    border-color: var(--gray-400);
}

/* ===================================
   RESULTADO DE DIMENSIONAMENTO
   =================================== */
.result-box {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-left: 4px solid var(--primary);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.result-box h3 {
    color: var(--primary);
    font-size: 1.125rem;
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.result-item {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--gray-200);
}

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

.result-label {
    font-weight: 500;
    color: var(--gray-700);
}

.result-value {
    font-weight: 600;
    color: var(--primary);
}

/* ===================================
   MATERIAIS
   =================================== */
.materials-controls {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.search-box {
    flex: 1;
    min-width: 250px;
    position: relative;
    display: flex;
    align-items: center;
}

.search-box svg {
    position: absolute;
    left: 0.75rem;
    color: var(--gray-400);
    pointer-events: none;
}

.search-box input {
    width: 100%;
    padding: 0.75rem 0.75rem 0.75rem 2.75rem;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: var(--transition);
}

.search-box input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.1);
}

.materials-controls select {
    padding: 0.75rem;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    font-size: 1rem;
    background: var(--white);
    cursor: pointer;
    transition: var(--transition);
    min-width: 200px;
}

.materials-controls select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.1);
}

.materials-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.material-item {
    background: var(--gray-50);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    transition: var(--transition);
    cursor: pointer;
}

.material-item:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.material-item.selected {
    border-color: var(--primary);
    background: rgba(13, 110, 253, 0.05);
}

.material-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: var(--spacing-sm);
}

.material-name {
    font-weight: 600;
    color: var(--gray-800);
    font-size: 0.95rem;
    line-height: 1.3;
}

.material-category {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    background: var(--primary);
    color: var(--white);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 500;
    white-space: nowrap;
}

.material-price {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
    margin: var(--spacing-sm) 0;
}

.material-unit {
    font-size: 0.875rem;
    color: var(--gray-500);
}

.material-controls {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.quantity-control {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    flex: 1;
}

.quantity-btn {
    width: 32px;
    height: 32px;
    border: 2px solid var(--gray-300);
    background: var(--white);
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    transition: var(--transition);
    color: var(--gray-700);
}

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

.quantity-input {
    width: 60px;
    text-align: center;
    padding: 0.5rem;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-sm);
    font-weight: 600;
}

.add-btn {
    padding: 0.5rem 1rem;
    background: var(--primary);
    color: var(--white);
    border: none;
    border-radius: var(--radius-sm);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.875rem;
}

.add-btn:hover {
    background: var(--primary-dark);
}

/* ===================================
   ITENS SELECIONADOS
   =================================== */
.selected-items {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-xl);
    border-top: 2px solid var(--gray-200);
}

.selected-items h3 {
    font-size: 1.125rem;
    color: var(--gray-800);
    margin-bottom: var(--spacing-md);
}

.selected-items-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.selected-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    background: var(--gray-50);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.selected-item:hover {
    background: var(--gray-100);
}

.selected-item-info {
    flex: 1;
}

.selected-item-name {
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: 0.25rem;
}

.selected-item-details {
    font-size: 0.875rem;
    color: var(--gray-600);
}

.selected-item-price {
    font-weight: 700;
    color: var(--primary);
    font-size: 1.125rem;
    margin: 0 var(--spacing-md);
}

.remove-btn {
    width: 32px;
    height: 32px;
    border: none;
    background: var(--danger);
    color: var(--white);
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.remove-btn:hover {
    background: #bb2d3b;
    transform: scale(1.1);
}

/* ===================================
   RESUMO DO ORÇAMENTO
   =================================== */
.summary-grid {
    display: grid;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-lg);
    background: var(--gray-50);
    border-radius: var(--radius-md);
}

.summary-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
}

.summary-item.total {
    border-top: 2px solid var(--gray-300);
    padding-top: var(--spacing-md);
    margin-top: var(--spacing-sm);
}

.summary-label {
    font-weight: 500;
    color: var(--gray-700);
    font-size: 1rem;
}

.summary-item.total .summary-label {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--gray-800);
}

.summary-value {
    font-weight: 700;
    color: var(--primary);
    font-size: 1.125rem;
}

.summary-item.total .summary-value {
    font-size: 1.75rem;
}

.discount-input {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.discount-input input {
    width: 80px;
    padding: 0.5rem;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-sm);
    text-align: center;
    font-weight: 600;
}

.discount-input span {
    font-weight: 600;
    color: var(--gray-700);
}

/* ===================================
   BOTÕES DE AÇÃO
   =================================== */
.action-buttons {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.action-buttons .btn {
    flex: 1;
    min-width: 200px;
}

/* ===================================
   FOOTER
   =================================== */
.footer {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin-top: var(--spacing-2xl);
    box-shadow: var(--shadow-lg);
    text-align: center;
}

.footer-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    flex-wrap: wrap;
}

.footer-brand {
    color: var(--primary);
    font-size: 1.125rem;
}

.footer-divider {
    color: var(--gray-400);
    font-weight: 300;
}

.footer-credits {
    color: var(--gray-700);
    font-size: 0.95rem;
}

.footer-credits strong {
    color: var(--primary);
    font-weight: 600;
}

.footer-year {
    color: var(--gray-500);
    font-size: 0.875rem;
    margin-top: var(--spacing-sm);
}

/* ===================================
   TOAST NOTIFICATION
   =================================== */
.toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: var(--gray-800);
    color: var(--white);
    padding: 1rem 1.5rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-xl);
    transform: translateY(150%);
    transition: transform 0.3s ease-out;
    z-index: 1000;
    max-width: 400px;
}

.toast.show {
    transform: translateY(0);
}

.toast.success {
    background: var(--success);
}

.toast.error {
    background: var(--danger);
}

/* ===================================
   LOADING OVERLAY
   =================================== */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top-color: var(--white);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.loading-overlay p {
    color: var(--white);
    margin-top: var(--spacing-lg);
    font-size: 1.125rem;
    font-weight: 500;
}

/* ===================================
   ANIMAÇÕES
   =================================== */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.fade-in {
    animation: fadeIn 0.6s ease-out;
}

/* ===================================
   RESPONSIVIDADE
   =================================== */
@media (max-width: 768px) {
    .container {
        padding: var(--spacing-sm);
    }
    
    .header {
        padding: var(--spacing-md);
    }
    
    .header-content {
        flex-direction: column;
        align-items: stretch;
    }
    
    .logo {
        flex-direction: column;
        text-align: center;
        margin-bottom: var(--spacing-md);
    }
    
    .logo svg {
        width: 40px;
        height: 40px;
    }
    
    .logo-text {
        text-align: center;
    }
    
    .logo h1 {
        font-size: 1.25rem;
        line-height: 1.3;
    }
    
    .logo .brand {
        font-size: 0.8rem;
    }
    
    .header-actions {
        justify-content: center;
    }
    
    .btn-icon {
        width: 40px;
        height: 40px;
    }
    
    .card {
        margin-bottom: var(--spacing-lg);
    }
    
    .card-header {
        padding: var(--spacing-md);
    }
    
    .card-header h2 {
        font-size: 1rem;
        flex-wrap: wrap;
    }
    
    .card-header h2 svg {
        width: 20px;
        height: 20px;
    }
    
    .card-body {
        padding: var(--spacing-md);
    }
    
    .form-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .project-types {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .project-type-card {
        padding: var(--spacing-lg);
    }
    
    .project-icon {
        font-size: 2.5rem;
    }
    
    .tabs {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: thin;
    }
    
    .tab-btn {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 0.875rem;
        white-space: nowrap;
    }
    
    .item-grid {
        grid-template-columns: 1fr;
    }
    
    .carga-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .carga-summary {
        padding: var(--spacing-md);
    }
    
    .carga-summary h3 {
        font-size: 1rem;
    }
    
    .carga-value {
        font-size: 1.25rem;
    }
    
    .materials-controls {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .materials-controls .search-box {
        min-width: 100%;
    }
    
    .materials-controls select,
    .materials-controls .btn {
        width: 100%;
    }
    
    .materials-list {
        grid-template-columns: 1fr;
    }
    
    .material-item {
        padding: var(--spacing-md);
    }
    
    .material-name {
        font-size: 0.875rem;
    }
    
    .material-price {
        font-size: 1.125rem;
    }
    
    .action-buttons {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .action-buttons .btn {
        width: 100%;
        min-width: auto;
        padding: var(--spacing-md);
        font-size: 0.95rem;
    }
    
    .selected-item {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
        padding: var(--spacing-md);
    }
    
    .selected-item-price {
        margin: 0;
        font-size: 1.125rem;
    }
    
    .summary-grid {
        padding: var(--spacing-md);
        gap: var(--spacing-sm);
    }
    
    .summary-item {
        padding: var(--spacing-xs) 0;
        font-size: 0.9rem;
    }
    
    .summary-value {
        font-size: 1rem;
    }
    
    .summary-item.total .summary-label {
        font-size: 1.125rem;
    }
    
    .summary-item.total .summary-value {
        font-size: 1.5rem;
    }
    
    .result-box {
        padding: var(--spacing-md);
    }
    
    .result-box h3 {
        font-size: 1rem;
    }
    
    .result-item {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
        padding: var(--spacing-sm) 0;
    }
    
    .footer {
        padding: var(--spacing-lg) var(--spacing-md);
    }
    
    .footer-content {
        flex-direction: column;
        gap: var(--spacing-xs);
        text-align: center;
    }
    
    .footer-brand {
        font-size: 1rem;
    }
    
    .footer-credits {
        font-size: 0.85rem;
    }
    
    .footer-divider {
        display: none;
    }
    
    .toast {
        right: 0.5rem;
        left: 0.5rem;
        bottom: 0.5rem;
        padding: 0.875rem 1rem;
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    body {
        font-size: 14px;
    }
    
    .container {
        padding: 0.5rem;
    }
    
    .header {
        padding: 1rem;
        border-radius: var(--radius-md);
    }
    
    .logo h1 {
        font-size: 1.1rem;
    }
    
    .logo .brand {
        font-size: 0.75rem;
    }
    
    .btn-icon {
        width: 36px;
        height: 36px;
    }
    
    .btn-icon svg {
        width: 18px;
        height: 18px;
    }
    
    .card {
        border-radius: var(--radius-md);
        margin-bottom: 1rem;
    }
    
    .card-header {
        padding: 0.875rem;
    }
    
    .card-header h2 {
        font-size: 0.95rem;
    }
    
    .card-body {
        padding: 0.875rem;
    }
    
    .form-group label {
        font-size: 0.8rem;
    }
    
    .form-group input,
    .form-group select,
    .form-group textarea {
        padding: 0.625rem;
        font-size: 0.9rem;
    }
    
    .btn {
        padding: 0.75rem 1rem;
        font-size: 0.9rem;
    }
    
    .project-type-card {
        padding: 1rem;
    }
    
    .project-icon {
        font-size: 2rem;
    }
    
    .project-type-card h3 {
        font-size: 1rem;
    }
    
    .project-type-card p {
        font-size: 0.8rem;
    }
    
    .tab-btn {
        padding: 0.5rem 0.75rem;
        font-size: 0.8rem;
    }
    
    .ambiente-item,
    .equipamento-item,
    .circuito-item {
        padding: 0.875rem;
    }
    
    .item-title {
        font-size: 1rem;
    }
    
    .item-remove {
        width: 28px;
        height: 28px;
    }
    
    .carga-summary {
        padding: 1rem;
    }
    
    .carga-summary h3 {
        font-size: 0.95rem;
        margin-bottom: 1rem;
    }
    
    .carga-label {
        font-size: 0.75rem;
    }
    
    .carga-value {
        font-size: 1.125rem;
    }
    
    .material-item {
        padding: 0.875rem;
    }
    
    .material-name {
        font-size: 0.8rem;
    }
    
    .material-category {
        font-size: 0.7rem;
        padding: 0.2rem 0.4rem;
    }
    
    .material-price {
        font-size: 1rem;
    }
    
    .material-unit {
        font-size: 0.75rem;
    }
    
    .quantity-btn {
        width: 28px;
        height: 28px;
        font-size: 0.9rem;
    }
    
    .quantity-input {
        width: 50px;
        padding: 0.375rem;
        font-size: 0.9rem;
    }
    
    .add-btn {
        padding: 0.5rem 0.875rem;
        font-size: 0.8rem;
    }
    
    .selected-items h3 {
        font-size: 1rem;
    }
    
    .selected-item {
        padding: 0.875rem;
    }
    
    .selected-item-name {
        font-size: 0.875rem;
    }
    
    .selected-item-details {
        font-size: 0.75rem;
    }
    
    .selected-item-price {
        font-size: 1rem;
    }
    
    .remove-btn {
        width: 28px;
        height: 28px;
    }
    
    .summary-grid {
        padding: 0.875rem;
    }
    
    .summary-item {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
        font-size: 0.85rem;
    }
    
    .summary-label {
        font-size: 0.85rem;
    }
    
    .summary-value {
        font-size: 0.95rem;
    }
    
    .summary-item.total {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        padding-top: 0.875rem;
    }
    
    .summary-item.total .summary-label {
        font-size: 1rem;
    }
    
    .summary-item.total .summary-value {
        font-size: 1.375rem;
    }
    
    .discount-input input {
        width: 60px;
        padding: 0.375rem;
        font-size: 0.9rem;
    }
    
    .result-box {
        padding: 0.875rem;
    }
    
    .result-box h3 {
        font-size: 0.95rem;
    }
    
    .result-item {
        font-size: 0.85rem;
    }
    
    .result-label,
    .result-value {
        font-size: 0.85rem;
    }
    
    .footer {
        padding: 1rem;
    }
    
    .footer-brand {
        font-size: 0.95rem;
    }
    
    .footer-credits {
        font-size: 0.75rem;
        line-height: 1.4;
    }
    
    .footer-year {
        font-size: 0.7rem;
    }
    
    .loading-overlay p {
        font-size: 1rem;
    }
    
    .spinner {
        width: 40px;
        height: 40px;
    }
    
    .seo-section {
        padding: var(--spacing-lg);
    }
    
    .seo-content h2 {
        font-size: 1.25rem;
    }
    
    .seo-grid {
        grid-template-columns: 1fr;
    }
    
    .seo-card {
        padding: var(--spacing-lg);
    }
    
    .seo-card h3 {
        font-size: 1.125rem;
    }
    
    .cta-section {
        padding: var(--spacing-lg);
    }
    
    .cta-section h3 {
        font-size: 1.25rem;
    }
    
    .cta-section p {
        font-size: 1rem;
    }
    
    .cta-button {
        padding: 0.875rem 1.5rem;
        font-size: 1rem;
        width: 100%;
        justify-content: center;
    }
    
    .whatsapp-float {
        bottom: 20px;
        right: 20px;
        padding: 12px 20px;
        font-size: 0.9rem;
    }
    
    .whatsapp-text {
        display: none;
    }
    
    .whatsapp-float {
        border-radius: 50%;
        width: 60px;
        height: 60px;
        padding: 0;
        justify-content: center;
    }
    
    .footer-links {
        font-size: 0.75rem;
        gap: 0.25rem;
    }
}

/* ===================================
   TIPOS DE PROJETO
   =================================== */
.project-types {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.project-type-card {
    background: var(--white);
    border: 3px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
}

.project-type-card:hover {
    border-color: var(--primary);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.project-type-card.selected {
    border-color: var(--primary);
    background: rgba(13, 110, 253, 0.05);
}

.project-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.project-type-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: var(--spacing-sm);
}

.project-type-card p {
    font-size: 0.875rem;
    color: var(--gray-600);
}

.selected-type {
    background: var(--gray-50);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--primary);
    margin-top: var(--spacing-lg);
}

/* ===================================
   TABS
   =================================== */
.tabs {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    border-bottom: 2px solid var(--gray-200);
    flex-wrap: wrap;
}

.tab-btn {
    padding: var(--spacing-md) var(--spacing-lg);
    border: none;
    background: transparent;
    color: var(--gray-600);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    border-bottom: 3px solid transparent;
    margin-bottom: -2px;
}

.tab-btn:hover {
    color: var(--primary);
}

.tab-btn.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.3s ease-out;
}

/* ===================================
   AMBIENTES, EQUIPAMENTOS E CIRCUITOS
   =================================== */
.ambiente-controls,
.equipamento-controls,
.circuito-controls {
    margin-bottom: var(--spacing-lg);
}

.ambientes-list,
.equipamentos-list,
.circuitos-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.ambiente-item,
.equipamento-item,
.circuito-item {
    background: var(--gray-50);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    transition: var(--transition);
}

.ambiente-item:hover,
.equipamento-item:hover,
.circuito-item:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
}

.item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.item-title {
    font-weight: 600;
    color: var(--gray-800);
    font-size: 1.125rem;
}

.item-remove {
    width: 32px;
    height: 32px;
    border: none;
    background: var(--danger);
    color: var(--white);
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.item-remove:hover {
    background: #bb2d3b;
    transform: scale(1.1);
}

.item-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

/* ===================================
   RESUMO DE CARGA
   =================================== */
.carga-summary {
    margin-top: var(--spacing-xl);
    padding: var(--spacing-xl);
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-radius: var(--radius-lg);
    border: 2px solid var(--primary);
}

.carga-summary h3 {
    font-size: 1.25rem;
    color: var(--gray-800);
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.carga-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
}

.carga-item {
    background: var(--white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    text-align: center;
}

.carga-label {
    display: block;
    font-size: 0.875rem;
    color: var(--gray-600);
    margin-bottom: var(--spacing-sm);
}

.carga-value {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

/* ===================================
   SEÇÃO SEO
   =================================== */
.seo-section {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
    margin-top: var(--spacing-2xl);
    box-shadow: var(--shadow-md);
}

.seo-content h2 {
    text-align: center;
    color: var(--gray-800);
    font-size: 1.75rem;
    margin-bottom: var(--spacing-xl);
    line-height: 1.3;
}

.seo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.seo-card {
    background: var(--gray-50);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    transition: var(--transition);
}

.seo-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.seo-card h3 {
    color: var(--primary);
    font-size: 1.25rem;
    margin-bottom: var(--spacing-md);
}

.seo-card p {
    color: var(--gray-700);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

.seo-card ul {
    list-style: none;
    padding: 0;
}

.seo-card ul li {
    color: var(--gray-600);
    padding: var(--spacing-xs) 0;
    padding-left: var(--spacing-lg);
    position: relative;
}

.seo-card ul li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--success);
    font-weight: bold;
}

.cta-section {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
    text-align: center;
    color: var(--white);
}

.cta-section h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
}

.cta-section p {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xl);
    opacity: 0.95;
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 1rem 2rem;
    background: #25D366;
    color: var(--white);
    border-radius: var(--radius-md);
    font-size: 1.125rem;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    box-shadow: var(--shadow-lg);
}

.cta-button:hover {
    background: #128C7E;
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

/* ===================================
   BOTÃO FLUTUANTE WHATSAPP
   =================================== */
.whatsapp-float {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: linear-gradient(135deg, #25D366 0%, #128C7E 100%);
    color: var(--white);
    border-radius: 50px;
    padding: 15px 25px;
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
    z-index: 999;
    transition: var(--transition);
    font-weight: 600;
    font-size: 1rem;
}

.whatsapp-float:hover {
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 6px 30px rgba(37, 211, 102, 0.6);
}

.whatsapp-float svg {
    flex-shrink: 0;
    animation: pulse 2s infinite;
}

.whatsapp-text {
    white-space: nowrap;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
}

/* ===================================
   FOOTER LINKS
   =================================== */
.footer-links {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
    color: var(--gray-600);
    font-size: 0.875rem;
    flex-wrap: wrap;
}

/* ===================================
   PWA - BOTÃO DE INSTALAÇÃO
   =================================== */
.install-pwa-button {
    position: fixed;
    top: 20px;
    right: 20px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--white);
    border: none;
    border-radius: 50px;
    padding: 12px 24px;
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(13, 110, 253, 0.4);
    z-index: 998;
    transition: var(--transition);
    animation: slideInDown 0.5s ease-out;
}

.install-pwa-button:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 6px 30px rgba(13, 110, 253, 0.6);
}

.install-pwa-button svg {
    flex-shrink: 0;
}

@keyframes slideInDown {
    from {
        transform: translateY(-100px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* PWA Mode - Ajustes quando instalado */
body.pwa-mode {
    padding-top: env(safe-area-inset-top);
    padding-bottom: env(safe-area-inset-bottom);
}

body.pwa-mode .header {
    padding-top: calc(var(--spacing-xl) + env(safe-area-inset-top));
}

/* Splash Screen Simulation */
@media (display-mode: standalone) {
    body {
        -webkit-user-select: none;
        user-select: none;
    }
    
    /* Remove bounce effect no iOS */
    body {
        overscroll-behavior-y: contain;
    }
}

/* ===================================
   IMPRESSÃO
   =================================== */
@media print {
    body {
        background: white;
    }
    
    .header,
    .card {
        box-shadow: none;
        page-break-inside: avoid;
    }
    
    .action-buttons,
    .materials-controls,
    .footer,
    .header-actions,
    .btn-icon,
    .tab-btn,
    .ambiente-controls,
    .equipamento-controls,
    .circuito-controls,
    .whatsapp-float,
    .seo-section {
        display: none;
    }
}