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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 500px;
    margin: 0 auto;
    background: white;
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
}

h1 {
    text-align: center;
    color: #333;
    margin-bottom: 30px;
    font-size: 2rem;
}

.add-item {
    display: flex;
    gap: 10px;
    margin-bottom: 30px;
}

#itemInput {
    flex: 1;
    padding: 12px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 16px;
    outline: none;
    transition: border-color 0.3s;
}

#itemInput:focus {
    border-color: #667eea;
}

#addBtn {
    padding: 12px 20px;
    background: #667eea;
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 16px;
    transition: background 0.3s;
}

#addBtn:hover {
    background: #5a6fd8;
}

.shopping-list {
    list-style: none;
    margin-bottom: 20px;
}

.shopping-item {
    display: flex;
    align-items: center;
    padding: 15px;
    background: #f8f9fa;
    margin-bottom: 10px;
    border-radius: 8px;
    transition: all 0.3s;
}

.shopping-item:hover {
    background: #e9ecef;
}

.shopping-item.completed {
    opacity: 0.6;
    text-decoration: line-through;
}

.item-text {
    flex: 1;
    margin-left: 15px;
    font-size: 16px;
}

.item-checkbox {
    width: 20px;
    height: 20px;
    cursor: pointer;
}

.delete-btn {
    background: #ff4757;
    color: white;
    border: none;
    padding: 8px 12px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 14px;
    transition: background 0.3s;
}

.delete-btn:hover {
    background: #ff3838;
}

.stats {
    text-align: center;
    color: #666;
    font-size: 14px;
    padding: 15px;
    background: #f8f9fa;
    border-radius: 8px;
}