:root {
    --primary: #4a6bdf;
    --primary-dark: #3a56b2;
    --secondary: #f8f9fa;
    --text: #333;
    --text-light: #555;
    --border: #e0e0e0;
    --card-shadow: 0 4px 8px rgba(0,0,0,0.1);
    --transition: all 0.3s ease;
}

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

body {
    background-color: #f5f7fa;
    color: var(--text);
    line-height: 1.6;
}

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

/* Component 1: Search Section */
.search-section {
    background: white;
    border-radius: 10px;
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: var(--card-shadow);
    text-align: center;
    transition: var(--transition);
}

.search-section:hover {
    box-shadow: 0 10px 20px rgba(0,0,0,0.15);
}

.search-section h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    color: var(--primary);
}

.search-section p {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 25px;
}

.search-box {
    display: flex;
    max-width: 600px;
    margin: 0 auto;
}

.search-box input {
    flex: 1;
    padding: 15px 20px;
    border: 1px solid var(--border);
    border-radius: 50px 0 0 50px;
    font-size: 1rem;
    outline: none;
    transition: var(--transition);
}

.search-box input:focus {
    border-color: var(--primary);
}

.search-box button {
    padding: 0 25px;
    background-color: var(--primary);
    color: white;
    border: none;
    border-radius: 0 50px 50px 0;
    cursor: pointer;
    font-size: 1rem;
    transition: var(--transition);
}

.search-box button:hover {
    background-color: var(--primary-dark);
}

/* Component 2: Model Grid */
.model-grid-section {
    background: white;
    border-radius: 10px;
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: var(--card-shadow);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
}

.section-header h2 {
    font-size: 1.8rem;
    color: var(--primary);
}

.model-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.model-card {
    background: white;
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 20px;
    transition: var(--transition);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.model-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--card-shadow);
    border-color: var(--primary);
}

.model-card h3 {
    font-size: 0.9rem;
    margin-bottom: 8px;
    color: var(--text);
    font-weight: 500;
}

.model-card .subtitle {
    color: var(--text);
    font-size: 0.9rem;
    margin-bottom: 12px;
    font-weight: 500;
}

.model-card p {
    color: var(--text);
    font-size: 0.9rem;
    margin-bottom: 5px;
}

.model-card .meta {
    display: flex;
    justify-content: space-between;
    margin-top: 15px;
    font-size: 0.85rem;
    color: var(--text-light);
    border-top: 1px solid var(--border);
    padding-top: 12px;
}

.pagination {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 20px;
}

.pagination button {
    padding: 8px 16px;
    background-color: var(--primary);
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: var(--transition);
}

.pagination button:disabled {
    background-color: #ccc;
    cursor: not-allowed;
}

.pagination button:hover:not(:disabled) {
    background-color: var(--primary-dark);
}

/* Component 3: Configuration Details */
.config-section {
    background: white;
    border-radius: 10px;
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: var(--card-shadow);
    display: none;
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.config-section.active {
    display: block;
}

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

.config-header h3 {
    font-size: 1.5rem;
    color: var(--primary);
}

.config-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    padding: 20px;
}

.config-card {
    background: white;
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 20px;
    transition: var(--transition);
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.config-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.config-content {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.config-card h4 {
    font-size: 1.1rem;
    margin-bottom: 10px;
    color: var(--primary-dark);
}

.detail-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    border-bottom: 1px solid var(--border);
}

.detail-item:last-child {
    border-bottom: none;
}

.detail-item strong {
    color: var(--text-light);
    font-size: 0.9rem;
}

.detail-item span {
    color: var(--text);
    font-weight: 500;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-light);
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 20px;
    color: var(--border);
}

/* Responsive */
@media (max-width: 1200px) {
    .config-list {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .model-grid {
        grid-template-columns: 1fr;
    }
    
    .search-section h1 {
        font-size: 2rem;
    }
    
    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }
    
    .config-list {
        grid-template-columns: 1fr;
    }
}

/* Loading spinner */
.spinner {
    display: none;
    width: 40px;
    height: 40px;
    margin: 20px auto;
    border: 4px solid rgba(0, 0, 0, 0.1);
    border-radius: 50%;
    border-top: 4px solid var(--primary);
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}