/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    background: linear-gradient(135deg, #0f2027 0%, #203a43 50%, #2c5364 100%);
    min-height: 100vh;
    padding: 20px;
    color: #333;
}

/* Wiki container */
.wiki-container {
    max-width: 1400px;
    margin: 0 auto;
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    overflow: hidden;
    padding: 40px;
}

/* Header styles */
.wiki-header {
    text-align: center;
    margin-bottom: 40px;
    padding-bottom: 30px;
    border-bottom: 3px solid #326ce5;
}

.wiki-header h1 {
    font-size: 3rem;
    font-weight: 700;
    background: linear-gradient(135deg, #326ce5, #1a4f9e);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 10px;
}

.subtitle {
    font-size: 1.2rem;
    color: #666;
    font-weight: 500;
}

/* Search container */
.search-container {
    margin-bottom: 30px;
}

.search-bar {
    position: relative;
    max-width: 800px;
    margin: 0 auto 15px;
}

.search-input {
    width: 100%;
    padding: 18px 50px 18px 24px;
    border: 2px solid #e9ecef;
    border-radius: 12px;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    background: white;
}

.search-input:focus {
    border-color: #326ce5;
    outline: none;
    box-shadow: 0 0 0 4px rgba(50, 108, 229, 0.1);
}

.clear-button {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: #dc3545;
    color: white;
    border: none;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    cursor: pointer;
    font-weight: bold;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.clear-button:hover {
    background: #c82333;
    transform: translateY(-50%) scale(1.1);
}

.clear-button.hidden {
    display: none;
}

.search-info {
    text-align: center;
    color: #666;
    font-size: 1rem;
}

/* Category filter */
.category-filter {
    background: #f8f9fa;
    border-radius: 12px;
    padding: 25px;
    margin-bottom: 30px;
    border: 1px solid #e9ecef;
}

.category-filter h3 {
    color: #326ce5;
    font-size: 1.4rem;
    margin-bottom: 15px;
    text-align: center;
}

.category-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    margin-bottom: 15px;
}

.category-button {
    background: white;
    color: #495057;
    border: 2px solid #e9ecef;
    padding: 10px 20px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.3s ease;
}

.category-button:hover {
    background: #e9ecef;
    border-color: #326ce5;
    transform: translateY(-2px);
}

.category-button.active {
    background: linear-gradient(135deg, #326ce5, #1a4f9e);
    color: white;
    border-color: #326ce5;
}

.reset-button {
    display: block;
    margin: 0 auto;
    background: #dc3545;
    color: white;
    border: none;
    padding: 10px 24px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.2s ease;
}

.reset-button:hover {
    background: #c82333;
    transform: translateY(-2px);
}

/* Concepts container */
.concepts-container {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.category-section {
    background: #f8f9fa;
    border-radius: 12px;
    padding: 30px;
    border-left: 5px solid #326ce5;
}

.category-title {
    color: #326ce5;
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 25px;
    text-align: center;
}

.concepts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(450px, 1fr));
    gap: 20px;
}

/* Concept card */
.concept-card {
    background: white;
    border-radius: 10px;
    padding: 20px;
    border: 1px solid #e9ecef;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.concept-card:hover {
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    transform: translateY(-2px);
}

.concept-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 15px;
    gap: 15px;
}

.concept-title {
    color: #2c5364;
    font-size: 1.2rem;
    font-weight: 600;
    flex: 1;
}

.copy-button {
    background: #326ce5;
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.copy-button:hover {
    background: #1a4f9e;
    transform: scale(1.05);
}

.copy-button.copied {
    background: #28a745;
}

.concept-description {
    color: #666;
    font-size: 0.95rem;
    margin-bottom: 15px;
    font-style: italic;
    padding: 10px;
    background: #e7f3ff;
    border-radius: 6px;
    border-left: 3px solid #326ce5;
}

.command-block {
    background: #2d2d2d;
    color: #f8f8f2;
    padding: 16px;
    border-radius: 8px;
    overflow-x: auto;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: 0.9rem;
    line-height: 1.6;
    border: 1px solid #1a1a1a;
}

.command-block code {
    color: #f8f8f2;
    font-family: inherit;
}

/* No results */
.no-results {
    text-align: center;
    padding: 60px 20px;
    color: #666;
}

.no-results p {
    font-size: 1.3rem;
}

/* Responsive design */
@media (max-width: 1024px) {
    .concepts-grid {
        grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    }
}

@media (max-width: 768px) {
    .wiki-container {
        margin: 10px;
        padding: 25px;
    }

    .wiki-header h1 {
        font-size: 2.2rem;
    }

    .subtitle {
        font-size: 1rem;
    }

    .concepts-grid {
        grid-template-columns: 1fr;
    }

    .concept-header {
        flex-direction: column;
        align-items: stretch;
    }

    .copy-button {
        width: 100%;
    }

    .category-buttons {
        gap: 8px;
    }

    .category-button {
        font-size: 0.85rem;
        padding: 8px 14px;
    }
}

@media (max-width: 480px) {
    body {
        padding: 10px;
    }

    .wiki-container {
        padding: 15px;
    }

    .wiki-header h1 {
        font-size: 1.8rem;
    }

    .search-input {
        font-size: 1rem;
        padding: 14px 45px 14px 18px;
    }

    .category-section {
        padding: 20px;
    }

    .category-title {
        font-size: 1.5rem;
    }

    .command-block {
        font-size: 0.8rem;
        padding: 12px;
    }
}

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 10px;
}

::-webkit-scrollbar-thumb {
    background: #326ce5;
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: #1a4f9e;
}