* {
    box-sizing: border-box;
}

body {
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
    background-color: #f9fafb;
}

.configurator-container {
    min-height: 100vh;
    padding: 1rem;
}

.main-content {
    max-width: 112rem;
    margin: 0 auto;
}

.grid-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

@media (min-width: 1280px) {
    .grid-layout {
        grid-template-columns: 1fr 1fr;
    }
}

.panel {
    background: white;
    border-radius: 0.5rem;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    padding: 1.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 0.25rem;
    color: #374151;
}

.form-input {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid #d1d5db;
    border-radius: 0.375rem;
    font-size: 1rem;
}

.form-input:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.btn {
    padding: 0.5rem 1rem;
    border-radius: 0.375rem;
    font-weight: 500;
    cursor: pointer;
    border: none;
    transition: background-color 0.2s;
}

.btn-primary {
    background-color: #3b82f6;
    color: white;
}

.btn-primary:hover {
    background-color: #2563eb;
}

.btn-success {
    background-color: #10b981;
    color: white;
}

.btn-success:hover {
    background-color: #059669;
}

.btn-danger {
    background-color: #ef4444;
    color: white;
}

.btn-danger:hover {
    background-color: #dc2626;
}

.color-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
}

.color-option {
    padding: 0.75rem;
    border-radius: 0.375rem;
    border: 2px solid #d1d5db;
    cursor: pointer;
    text-align: center;
    font-size: 0.75rem;
    font-weight: 500;
}

.color-option.selected {
    border-color: #3b82f6;
}

.window-item, .door-item {
    margin-bottom: 1rem;
    padding: 1rem;
    border: 1px solid #d1d5db;
    border-radius: 0.375rem;
}

.input-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.error-panel {
    margin-bottom: 1.5rem;
    padding: 1rem;
    background-color: #fef2f2;
    border: 1px solid #fecaca;
    border-radius: 0.375rem;
}

.error-title {
    color: #991b1b;
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.error-list {
    color: #b91c1c;
    font-size: 0.875rem;
    list-style: none;
    padding: 0;
    margin: 0;
}

.price-panel {
    background-color: #eff6ff;
    padding: 1rem;
    border-radius: 0.375rem;
}

.price-text {
    font-size: 1.125rem;
    font-weight: 600;
    color: #1e3a8a;
}

.visualization-container {
    width: 90%;
    margin: 0 auto;
    border: 1px solid #d1d5db;
    border-radius: 0.375rem;
    overflow: hidden;
    height: 800px;
}

.visualization-info {
    margin-top: 1rem;
    font-size: 0.875rem;
    color: #6b7280;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
}

.section-title {
    font-size: 1.125rem;
    font-weight: 500;
    color: #111827;
}