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

:root {
    --primary-color: #4f46e5;
    --primary-hover: #4338ca;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --error-color: #ef4444;
    --border-color: #e2e8f0;
    --bg-color: #f8fafc;
    --text-color: #1e293b;
    --light-text: #64748b;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
    color: var(--text-color);
}

.container {
    max-width: 800px;
    margin: 0 auto;
}

.form-wrapper {
    background: white;
    border-radius: 16px;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    padding: 40px;
}

h1 {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 8px;
}

.subtitle {
    color: var(--light-text);
    margin-bottom: 32px;
    font-size: 16px;
}

.form-group {
    margin-bottom: 24px;
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--text-color);
    font-size: 14px;
}

.required {
    color: var(--error-color);
}

input[type="text"],
input[type="tel"],
input[type="number"],
textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 16px;
    transition: all 0.3s ease;
    font-family: inherit;
}

input:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

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

.products-section {
    margin-top: 40px;
    padding-top: 32px;
    border-top: 2px solid var(--border-color);
}

.products-section h2 {
    font-size: 24px;
    margin-bottom: 24px;
    color: var(--text-color);
}

.product-item {
    background: var(--bg-color);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 20px;
    position: relative;
    animation: slideIn 0.3s ease;
}

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

.product-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.product-header h3 {
    font-size: 18px;
    color: var(--text-color);
}

.remove-product-btn {
    background: var(--error-color);
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.remove-product-btn:hover {
    background: #dc2626;
    transform: translateY(-1px);
}

.file-input-wrapper {
    position: relative;
}

.file-input-label {
    display: inline-block;
    padding: 12px 24px;
    background: white;
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
    width: 100%;
    color: var(--light-text);
}

.file-input-label:hover {
    border-color: var(--primary-color);
    background: rgba(79, 70, 229, 0.05);
}

input[type="file"] {
    display: none;
}

.file-preview {
    margin-top: 12px;
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.preview-item {
    position: relative;
    width: 100px;
    height: 100px;
    border-radius: 8px;
    overflow: hidden;
    border: 2px solid var(--border-color);
}

.preview-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.preview-item .remove-image {
    position: absolute;
    top: 4px;
    right: 4px;
    background: var(--error-color);
    color: white;
    border: none;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 16px;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.qty-input-group {
    display: flex;
    gap: 12px;
}

.qty-input-group .form-group {
    flex: 1;
}

.btn-primary,
.btn-secondary {
    padding: 14px 28px;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: inherit;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
    width: 100%;
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.4);
}

.btn-primary:disabled {
    background: var(--secondary-color);
    cursor: not-allowed;
    transform: none;
}

.btn-secondary {
    background: white;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    width: 100%;
}

.btn-secondary:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-1px);
}

.form-actions {
    margin-top: 32px;
}

.message-box {
    margin-top: 20px;
    padding: 16px;
    border-radius: 8px;
    display: none;
    animation: slideIn 0.3s ease;
}

.message-box.show {
    display: block;
}

.message-box.success {
    background: #d1fae5;
    color: #065f46;
    border: 2px solid var(--success-color);
}

.message-box.error {
    background: #fee2e2;
    color: #991b1b;
    border: 2px solid var(--error-color);
}

@media (max-width: 768px) {
    .form-wrapper {
        padding: 24px;
    }

    h1 {
        font-size: 24px;
    }

    .products-section h2 {
        font-size: 20px;
    }

    .qty-input-group {
        flex-direction: column;
    }
}