Lista de Compras

Objetivo

Criar uma lista de compras temporária que permite adicionar, remover e exportar itens.

Estrutura de Arquivos

/compras/
├── index.php
├── export.php
└── style.css

1. CSS para Lista de Compras (style.css)

/* style.css - Lista de Compras - Design Moderno */

/* Reset e variáveis globais */
:root {
    --primary: #6C63FF;
    --primary-dark: #5a52d5;
    --primary-light: #8b83ff;
    --secondary: #FF6584;
    --success: #2ecc71;
    --danger: #e74c3c;
    --warning: #f39c12;
    --dark: #2d3436;
    --gray: #636e72;
    --light-gray: #dfe6e9;
    --bg: #f0f2f5;
    --white: #ffffff;
    --shadow: 0 10px 30px rgba(108, 99, 255, 0.15);
    --radius: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--bg);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(108, 99, 255, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(255, 101, 132, 0.05) 0%, transparent 50%);
}

.container {
    max-width: 900px;
    width: 100%;
    background: var(--white);
    border-radius: var(--radius);
    padding: 40px;
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
}

/* Decoração de fundo */
.container::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(108, 99, 255, 0.03), rgba(255, 101, 132, 0.03));
    transform: rotate(45deg);
    pointer-events: none;
}

/* Títulos */
h1 {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 12px;
}

h1 span {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    color: var(--gray);
    font-size: 0.95rem;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--light-gray);
}

/* Barra de estatísticas */
.stats-bar {
    display: flex;
    gap: 20px;
    margin-bottom: 25px;
    flex-wrap: wrap;
}

.stat-item {
    background: var(--bg);
    padding: 12px 20px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.95rem;
    color: var(--dark);
    transition: var(--transition);
}

.stat-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

.stat-item .number {
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--primary);
}

.stat-item .label {
    color: var(--gray);
}

/* Formulário de adição */
.add-form {
    display: flex;
    gap: 12px;
    margin-bottom: 30px;
    background: var(--bg);
    padding: 15px;
    border-radius: var(--radius);
    position: relative;
    z-index: 1;
}

.add-form .form-group {
    flex: 1;
    margin: 0;
}

.add-form input {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid transparent;
    border-radius: 10px;
    font-size: 1rem;
    transition: var(--transition);
    background: var(--white);
    color: var(--dark);
}

.add-form input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(108, 99, 255, 0.1);
}

.add-form input::placeholder {
    color: var(--gray);
    opacity: 0.7;
}

.add-form .input-quantidade {
    max-width: 100px;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    border: none;
    padding: 14px 28px;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
    white-space: nowrap;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(108, 99, 255, 0.3);
}

.btn-primary:active {
    transform: translateY(0);
}

/* Tabela */
.table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius);
    border: 2px solid var(--light-gray);
    margin-bottom: 20px;
    position: relative;
    z-index: 1;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.95rem;
}

table thead {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
}

table th {
    padding: 16px 20px;
    text-align: left;
    font-weight: 600;
    letter-spacing: 0.5px;
}

table th:first-child {
    border-radius: 10px 0 0 0;
}

table th:last-child {
    border-radius: 0 10px 0 0;
}

table tbody tr {
    transition: var(--transition);
    border-bottom: 1px solid var(--light-gray);
}

table tbody tr:last-child {
    border-bottom: none;
}

table tbody tr:hover {
    background: rgba(108, 99, 255, 0.04);
}

table td {
    padding: 14px 20px;
    color: var(--dark);
}

table td:last-child {
    text-align: center;
}

/* Badge de quantidade */
.badge-quantidade {
    display: inline-block;
    background: var(--primary-light);
    color: white;
    padding: 4px 12px;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.85rem;
}

/* Botões de ação */
.btn-action {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    border-radius: 8px;
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 500;
    transition: var(--transition);
    border: 2px solid transparent;
}

.btn-remove {
    background: rgba(231, 76, 60, 0.1);
    color: var(--danger);
}

.btn-remove:hover {
    background: var(--danger);
    color: white;
    transform: scale(1.05);
}

.btn-clear {
    background: rgba(231, 76, 60, 0.1);
    color: var(--danger);
    padding: 8px 16px;
    border-radius: 10px;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.btn-clear:hover {
    background: var(--danger);
    color: white;
}

/* Rodapé da tabela */
.table-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0 0;
    flex-wrap: wrap;
    gap: 15px;
}

.btn-export {
    background: linear-gradient(135deg, var(--success), #27ae60);
    color: white;
    padding: 12px 24px;
    border-radius: 10px;
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
    border: none;
    cursor: pointer;
}

.btn-export:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(46, 204, 113, 0.3);
}

/* Estado vazio */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    background: var(--bg);
    border-radius: var(--radius);
}

.empty-state .icon {
    font-size: 4rem;
    margin-bottom: 15px;
    display: block;
}

.empty-state h3 {
    color: var(--dark);
    margin-bottom: 8px;
}

.empty-state p {
    color: var(--gray);
}

/* Aviso de sessão */
.session-warning {
    margin-top: 25px;
    padding: 14px 20px;
    background: rgba(243, 156, 18, 0.1);
    border-radius: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--warning);
    font-size: 0.9rem;
    border-left: 4px solid var(--warning);
    position: relative;
    z-index: 1;
}

/* Responsividade */
@media (max-width: 768px) {
    .container {
        padding: 20px;
    }

    h1 {
        font-size: 1.6rem;
    }

    .add-form {
        flex-direction: column;
        padding: 12px;
    }

    .add-form .input-quantidade {
        max-width: 100%;
    }

    .btn-primary {
        width: 100%;
        justify-content: center;
    }

    .stats-bar {
        flex-direction: column;
        gap: 10px;
    }

    .stat-item {
        justify-content: center;
    }

    table {
        font-size: 0.85rem;
    }

    table th,
    table td {
        padding: 10px 12px;
    }

    .table-footer {
        flex-direction: column;
        align-items: stretch;
    }

    .btn-export {
        justify-content: center;
    }

    .session-warning {
        font-size: 0.8rem;
        padding: 12px 16px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 15px;
    }

    h1 {
        font-size: 1.4rem;
    }

    table th,
    table td {
        padding: 8px 10px;
        font-size: 0.8rem;
    }

    .btn-action {
        padding: 4px 10px;
        font-size: 0.8rem;
    }
}

/* Animações */
@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

table tbody tr {
    animation: slideIn 0.3s ease forwards;
}

table tbody tr:nth-child(1) { animation-delay: 0.05s; }
table tbody tr:nth-child(2) { animation-delay: 0.1s; }
table tbody tr:nth-child(3) { animation-delay: 0.15s; }
table tbody tr:nth-child(4) { animation-delay: 0.2s; }
table tbody tr:nth-child(5) { animation-delay: 0.25s; }
table tbody tr:nth-child(6) { animation-delay: 0.3s; }
table tbody tr:nth-child(7) { animation-delay: 0.35s; }
table tbody tr:nth-child(8) { animation-delay: 0.4s; }
table tbody tr:nth-child(9) { animation-delay: 0.45s; }
table tbody tr:nth-child(10) { animation-delay: 0.5s; }

/* Scrollbar personalizada */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb {
    background: var(--primary-light);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary);
}

2. Criar o arquivo index.php

<?php
// index.php - Lista de Compras com Sessão

// Inicia a sessão para armazenar a lista temporariamente
session_start();

// Inicializa a lista se não existir
if (!isset($_SESSION['lista_compras'])) {
    $_SESSION['lista_compras'] = [];
}

// Processa ações
$acao = $_GET['acao'] ?? '';

if ($acao === 'adicionar' && $_SERVER['REQUEST_METHOD'] === 'POST') {
    $item = trim($_POST['item'] ?? '');
    $quantidade = intval($_POST['quantidade'] ?? 1);
    
    if (!empty($item)) {
        $_SESSION['lista_compras'][] = [
            'item' => $item,
            'quantidade' => $quantidade,
            'id' => uniqid() // Identificador único
        ];
    }
    header('Location: index.php');
    exit;
}

if ($acao === 'remover' && isset($_GET['id'])) {
    $id = $_GET['id'];
    foreach ($_SESSION['lista_compras'] as $chave => $produto) {
        if ($produto['id'] === $id) {
            unset($_SESSION['lista_compras'][$chave]);
            break;
        }
    }
    // Reindexa o array
    $_SESSION['lista_compras'] = array_values($_SESSION['lista_compras']);
    header('Location: index.php');
    exit;
}

if ($acao === 'limpar') {
    $_SESSION['lista_compras'] = [];
    header('Location: index.php');
    exit;
}

// Conta total de itens
$total_itens = count($_SESSION['lista_compras']);
$total_quantidade = 0;
foreach ($_SESSION['lista_compras'] as $produto) {
    $total_quantidade += $produto['quantidade'];
}
?>
<!DOCTYPE html>
<html lang="pt-BR">
<head>
    <meta charset="UTF-8">
    <title>Lista de Compras</title>
    <link rel="stylesheet" href="style.css">
</head>
<body>
    <div class="container">
        <h1>🛒 Lista de Compras</h1>
        
        <div style="display: flex; justify-content: space-between; align-items: center; margin-bottom: 15px;">
            <span>
                Itens: <?php echo $total_itens; ?> | 
                Quantidade total: <?php echo $total_quantidade; ?>
            </span>
            <span>
                <a href="?acao=limpar" style="color: #dc3545;">🗑️ Limpar lista</a>
            </span>
        </div>

        <!-- Formulário para adicionar itens -->
        <form method="POST" action="?acao=adicionar" style="display: flex; gap: 10px; margin-bottom: 20px;">
            <div class="form-group" style="flex: 1; margin: 0;">
                <input type="text" name="item" placeholder="Digite o item..." required style="width: 100%; padding: 12px; border: 1px solid #ddd; border-radius: 5px;">
            </div>
            <div class="form-group" style="width: 80px; margin: 0;">
                <input type="number" name="quantidade" value="1" min="1" style="width: 100%; padding: 12px; border: 1px solid #ddd; border-radius: 5px;">
            </div>
            <button type="submit" style="padding: 12px 24px;">➕ Adicionar</button>
        </form>

        <!-- Lista de itens -->
        <?php if (count($_SESSION['lista_compras']) > 0): ?>
            <table>
                <thead>
                    <tr>
                        <th>#</th>
                        <th>Item</th>
                        <th>Quantidade</th>
                        <th>Ações</th>
                    </tr>
                </thead>
                <tbody>
                    <?php 
                    $contador = 1;
                    foreach ($_SESSION['lista_compras'] as $produto): 
                    ?>
                    <tr>
                        <td><?php echo $contador++; ?></td>
                        <td><?php echo htmlspecialchars($produto['item']); ?></td>
                        <td><?php echo $produto['quantidade']; ?></td>
                        <td>
                            <a href="?acao=remover&id=<?php echo $produto['id']; ?>" 
                               style="color: #dc3545; text-decoration: none;"
                               onclick="return confirm('Remover este item?')">
                                ❌ Remover
                            </a>
                        </td>
                    </tr>
                    <?php endforeach; ?>
                </tbody>
                <tfoot>
                    <tr>
                        <td colspan="4" style="text-align: center;">
                            <a href="export.php" class="btn-export" style="text-decoration: none; display: inline-block; padding: 10px 20px;">
                                📥 Exportar Lista (CSV)
                            </a>
                        </td>
                    </tr>
                </tfoot>
            </table>
        <?php else: ?>
            <div style="text-align: center; padding: 40px; background: #f8f9fa; border-radius: 5px;">
                <p style="color: #666;">Sua lista está vazia. Adicione itens acima!</p>
            </div>
        <?php endif; ?>
        
        <p style="margin-top: 20px; text-align: center; color: #999; font-size: 14px;">
            ⚠️ A lista é temporária e será apagada ao fechar o navegador.
        </p>
    </div>
</body>
</html>

3. Criar o arquivo export.php

<?php
// export.php - Exporta a lista de compras

session_start();

// Verifica se há itens na lista
if (!isset($_SESSION['lista_compras']) || empty($_SESSION['lista_compras'])) {
    header('Location: index.php');
    exit;
}

// Nome do arquivo
$nome_arquivo = 'lista_compras_' . date('Y-m-d_H-i-s') . '.csv';

// Headers
header('Content-Type: text/csv; charset=utf-8');
header('Content-Disposition: attachment; filename="' . $nome_arquivo . '"');

// Abre saída
$saida = fopen('php://output', 'w');

// BOM para Excel
fprintf($saida, chr(0xEF).chr(0xBB).chr(0xBF));

// Cabeçalhos
fputcsv($saida, ['Item', 'Quantidade']);

// Dados
foreach ($_SESSION['lista_compras'] as $produto) {
    fputcsv($saida, [$produto['item'], $produto['quantidade']]);
}

fclose($saida);
exit;
?>