:root {
    --primario: #4285F4;
    --primario-escuro: #3367d6;
    --secundario: #34A853;
    --acento: #EA4335;
    --fundo: #f0f2f5;
    --texto: #202124;
    --texto-secundario: #5f6368;
    --fundo-cartao: white;
    --sombra-cartao: rgba(0,0,0,0.08);
    --sombra-cartao-hover: rgba(0,0,0,0.15);
    --sucesso: #0f9d58;
    --aviso: #f4b400;
    --perigo: #ea4335;
    --raio: 16px;
    --transicao: all 0.3s ease;
    --gradiente: linear-gradient(135deg, var(--primario), var(--secundario));
}

.modo-escuro {
    --fundo: #121212;
    --texto: #e8eaed;
    --texto-secundario: #9aa0a6;
    --fundo-cartao: #1e1e1e;
    --sombra-cartao: rgba(0,0,0,0.4);
    --sombra-cartao-hover: rgba(0,0,0,0.6);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Roboto, Arial, sans-serif;
}

body {
    background: var(--fundo);
    color: var(--texto);
    line-height: 1.6;
    transition: var(--transicao);
    min-height: 100vh;
    padding-bottom: 60px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

header {
    background: var(--gradiente);
    color: white;
    padding: 20px 0;
    margin-bottom: 30px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo h1 {
    font-size: 1.8rem;
    font-weight: 700;
}

.logo i {
    font-size: 2rem;
}

.search-bar {
    display: flex;
    align-items: center;
    background: rgba(255,255,255,0.2);
    border-radius: 50px;
    padding: 10px 20px;
    width: 100%;
    max-width: 400px;
    backdrop-filter: blur(10px);
}

.search-bar input {
    background: transparent;
    border: none;
    color: white;
    width: 100%;
    outline: none;
    font-size: 1rem;
    padding: 5px;
}

.search-bar input::placeholder {
    color: rgba(255,255,255,0.7);
}

.filtros-container {
    margin-bottom: 30px;
}

.filtros-container h2 {
    margin-bottom: 15px;
    color: var(--texto-secundario);
}

.filtros {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    align-items: end;
}

.filtro-grupo {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.filtro-grupo label {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--texto-secundario);
}

.filtro-grupo select {
    padding: 8px 12px;
    border-radius: 8px;
    border: 1px solid #ddd;
    background: var(--fundo-cartao);
    color: var(--texto);
}

.quick-actions {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.action-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: var(--fundo-cartao);
    padding: 25px 15px;
    border-radius: var(--raio);
    box-shadow: 0 4px 12px var(--sombra-cartao);
    cursor: pointer;
    transition: var(--transicao);
    text-align: center;
}

.action-btn:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px var(--sombra-cartao-hover);
}

.action-btn i {
    font-size: 2.2rem;
    margin-bottom: 12px;
    color: var(--primario);
}

.action-btn span {
    font-weight: 600;
    font-size: 0.95rem;
}

.dashboard {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 25px;
    margin-bottom: 40px;
}

.cartao {
    background: var(--fundo-cartao);
    border-radius: var(--raio);
    overflow: hidden;
    box-shadow: 0 4px 12px var(--sombra-cartao);
    transition: var(--transicao);
}

.cartao:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px var(--sombra-cartao-hover);
}

.cartao-header {
    background: var(--primario);
    color: white;
    padding: 18px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.cartao-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
}

.cartao-body {
    padding: 20px;
}

.cartao-info {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.cartao-info p {
    display: flex;
    justify-content: space-between;
    padding: 5px 0;
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

.cartao-info strong {
    color: var(--texto-secundario);
    font-weight: 500;
}

.cartao-acoes {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px solid rgba(0,0,0,0.1);
}

.btn {
    padding: 8px 16px;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    font-weight: 500;
    transition: var(--transicao);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

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

.btn-primario:hover {
    background: var(--primario-escuro);
}

.btn-secundario {
    background: transparent;
    color: var(--texto-secundario);
    border: 1px solid var(--texto-secundario);
}

.btn-secundario:hover {
    background: rgba(0,0,0,0.05);
}

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

.btn-perigo:hover {
    background: #d32f2f;
}

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.6);
    z-index: 2000;
    align-items: center;
    justify-content: center;
    padding: 20px;
    backdrop-filter: blur(5px);
}

.modal-content {
    background: var(--fundo-cartao);
    padding: 30px;
    border-radius: var(--raio);
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    width: 100%;
    max-width: 700px;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 1px solid rgba(0,0,0,0.1);
}

.modal-header h2 {
    font-size: 1.5rem;
    color: var(--primario);
}

.close-modal, .close-view-modal, .close-calculator, .close-settings {
    background: none;
    border: none;
    font-size: 1.8rem;
    cursor: pointer;
    color: var(--texto-secundario);
    transition: var(--transicao);
}

.close-modal:hover, .close-view-modal:hover, .close-calculator:hover, .close-settings:hover {
    color: var(--perigo);
}

.form-row {
    display: flex;
    gap: 15px;
    margin-bottom: 15px;
}

.form-group {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

label {
    font-weight: 500;
    color: var(--texto-secundario);
    font-size: 0.9rem;
}

input, select, textarea {
    padding: 12px 15px;
    border-radius: 8px;
    border: 1px solid #ddd;
    font-size: 1rem;
    transition: var(--transicao);
    background: var(--fundo-cartao);
    color: var(--texto);
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--primario);
    box-shadow: 0 0 0 2px rgba(66, 133, 244, 0.2);
}

.itens-container {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin: 15px 0;
}

.item-row {
    display: flex;
    gap: 12px;
    align-items: center;
    padding: 12px;
    background: rgba(0,0,0,0.03);
    border-radius: 8px;
}

.item-categoria {
    flex: 1;
}

.item-descricao {
    flex: 2;
}

.item-tamanho, .item-cor {
    flex: 1;
    position: relative;
}

.item-cor option {
    padding-left: 20px;
}

.item-quantidade, .item-preco {
    flex: 1;
}

.item-cor option::before {
    content: '';
    display: inline-block;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    margin-right: 8px;
    vertical-align: middle;
}

.item-cor option[value="Preto"]::before { background: #000000; }
.item-cor option[value="Branco"]::before { background: #FFFFFF; border: 1px solid #ddd; }
.item-cor option[value="Azul"]::before { background: #0000FF; }
.item-cor option[value="Vermelho"]::before { background: #FF0000; }
.item-cor option[value="Verde"]::before { background: #008000; }

.remove-item {
    background: var(--perigo);
    color: white;
    border: none;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transicao);
}

.remove-item:hover {
    background: #d32f2f;
}

.btn-adicionar {
    background: var(--secundario);
    color: white;
    border: none;
    padding: 10px 15px;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 15px;
    transition: var(--transicao);
}

.btn-adicionar:hover {
    background: #2d9348;
}

.total-container {
    background: rgba(66, 133, 244, 0.1);
    padding: 15px;
    border-radius: 8px;
    margin: 15px 0;
    text-align: right;
}

.total-label {
    font-weight: 500;
    color: var(--texto-secundario);
    margin-right: 10px;
}

.total-value {
    font-weight: 700;
    font-size: 1.3rem;
    color: var(--primario);
}

.btn-submit {
    background: var(--primario);
    color: white;
    border: none;
    padding: 14px 25px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    width: 100%;
    transition: var(--transicao);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn-submit:hover {
    background: var(--primario-escuro);
}

/* Modal de visualização */
.modal-body {
    margin-bottom: 25px;
}

.documento-view {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.documento-view .info-item {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

.documento-view .info-item strong {
    color: var(--texto-secundario);
}

.documento-view .itens-lista {
    margin: 15px 0;
}

.documento-view .item-lista {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

.documento-view .total-view {
    margin-top: 15px;
    padding-top: 15px;
    border-top: 2px solid var(--primario);
    text-align: right;
    font-weight: bold;
    font-size: 1.2rem;
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    padding-top: 20px;
    border-top: 1px solid rgba(0,0,0,0.1);
}

/* Calculadora */
.calculator {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.calculator-container {
    display: flex;
    flex-direction: row;
    gap: 15px;
    align-items: flex-start;
}

.calculator-display {
    flex: 1;
    padding: 15px;
    font-size: 1.8rem;
    text-align: right;
    border-radius: 8px;
    border: 1px solid var(--texto-secundario);
    background: var(--fundo-cartao);
    color: var(--texto);
    height: 200px; /* Altura fixa para alinhar com o grid */
}

.calculator-buttons {
    flex: 0 0 200px; /* Tamanho fixo para manter quadrado */
    display: grid;
    grid-template-columns: repeat(4, 1fr); /* Grid 4x4 quadrado */
    gap: 8px;
}

.calc-btn {
    padding: 0;
    font-size: 1.2rem;
    border-radius: 8px;
    border: none;
    background: var(--fundo-cartao);
    color: var(--texto);
    cursor: pointer;
    transition: var(--transicao);
    box-shadow: 0 2px 5px var(--sombra-cartao);
    aspect-ratio: 1 / 1; /* Força botões quadrados */
    display: flex;
    align-items: center;
    justify-content: center;
}

.calc-btn:hover {
    background: var(--primario);
    color: white;
}

.calc-btn:active {
    transform: scale(0.95);
}

.calc-btn.operator {
    background: var(--acento);
    color: white;
}

.calc-btn.operator:hover {
    background: var(--perigo);
}

.calc-btn.memory {
    background: var(--secundario);
    color: white;
}

.calc-btn.memory:hover {
    background: #2d8f47;
}

.calc-btn.equals {
    background: var(--primario);
    color: white;
}

.calc-btn.equals:hover {
    background: var(--primario-escuro);
}

.calc-btn.apply {
    background: var(--sucesso);
    color: white;
}

.calc-btn.apply:hover {
    background: #0d803e;
}

.calc-btn.backspace {
    font-size: 1.4rem;
}

/* Notificações */
.notificacao {
    position: fixed;
    bottom: 20px;
    right: 20px;
    padding: 15px 25px;
    border-radius: 8px;
    background: var(--sucesso);
    color: white;
    box-shadow: 0 5px 15px rgba(0,0,0,0.15);
    transform: translateY(100px);
    opacity: 0;
    transition: all 0.4s ease;
    z-index: 3000;
    display: flex;
    align-items: center;
    gap: 10px;
    max-width: 400px;
}

.notificacao.show {
    transform: translateY(0);
    opacity: 1;
}

.notificacao.erro {
    background: var(--perigo);
}

/* Footer */
footer {
    text-align: center;
    margin-top: 50px;
    padding: 25px;
    color: var(--texto-secundario);
    font-size: 0.9rem;
    border-top: 1px solid rgba(0,0,0,0.1);
}

footer a {
    color: var(--primario);
    text-decoration: none;
    transition: var(--transicao);
}

footer a:hover {
    text-decoration: underline;
}

/* Responsividade */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        text-align: center;
    }
    
    .search-bar {
        max-width: 100%;
    }
    
    .quick-actions {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .filtros {
        flex-direction: column;
        align-items: stretch;
    }
    
    .form-row {
        flex-direction: column;
        gap: 10px;
    }
    
    .item-row {
        flex-direction: column;
        align-items: stretch;
    }
    
    .modal-actions {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .quick-actions {
        grid-template-columns: 1fr;
    }
    
    .dashboard {
        grid-template-columns: 1fr;
    }
    
    .logo h1 {
        font-size: 1.5rem;
    }
    
    .modal-content {
        padding: 20px;
    }
}