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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

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

header {
    margin-bottom: 30px;
    padding: 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    text-align: center;
}

.title-section {
    flex: 1;
}

.home-link {
    display: inline-block;
    font-size: 2rem;
    color: white;
    text-decoration: none;
    padding: 10px;
    border-radius: 50%;
    transition: all 0.3s ease;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.2);
}

.home-link:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.1);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
}

header p {
    font-size: 1.1rem;
    opacity: 0.9;
}

main {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-bottom: 30px;
}

.editor-section, .output-section {
    background: white;
    border-radius: 10px;
    padding: 20px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.editor-section h2, .output-section h2 {
    margin-bottom: 15px;
    color: #2c3e50;
    font-size: 1.5rem;
}

.editor-controls {
    margin-bottom: 15px;
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s ease;
    background-color: #ecf0f1;
    color: #2c3e50;
}

.btn:hover {
    background-color: #bdc3c7;
    transform: translateY(-1px);
}

.btn-primary {
    background-color: #3498db;
    color: white;
}

.btn-primary:hover {
    background-color: #2980b9;
}

#wasmEditor {
    width: 100%;
    height: 400px;
    padding: 15px;
    border: 2px solid #ecf0f1;
    border-radius: 8px;
    font-family: 'Courier New', monospace;
    font-size: 14px;
    line-height: 1.4;
    resize: vertical;
    background-color: #fafafa;
    transition: border-color 0.3s ease;
}

#wasmEditor:focus {
    outline: none;
    border-color: #3498db;
    background-color: white;
}

.output-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.output-header h2 {
    margin: 0;
}

.output-area {
    min-height: 400px;
    padding: 15px;
    border: 2px solid #ecf0f1;
    border-radius: 8px;
    background-color: #fafafa;
    font-family: 'Courier New', monospace;
    font-size: 14px;
    line-height: 1.4;
    white-space: pre-wrap;
    overflow-y: auto;
}

.placeholder {
    color: #95a5a6;
    font-style: italic;
}

.error-area {
    margin-top: 15px;
    padding: 15px;
    border: 2px solid #e74c3c;
    border-radius: 8px;
    background-color: #fdf2f2;
    color: #c0392b;
    font-family: 'Courier New', monospace;
    font-size: 14px;
    white-space: pre-wrap;
}

.hidden {
    display: none;
}

.examples-section {
    background: white;
    border-radius: 10px;
    padding: 20px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.examples-section h2 {
    margin-bottom: 15px;
    color: #2c3e50;
    font-size: 1.5rem;
}

.example-buttons {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.example-btn {
    padding: 8px 16px;
    border: 2px solid #3498db;
    border-radius: 5px;
    background-color: white;
    color: #3498db;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.example-btn:hover {
    background-color: #3498db;
    color: white;
    transform: translateY(-1px);
}

/* Responsive design */
@media (max-width: 768px) {
    main {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .container {
        padding: 15px;
    }
    
    header h1 {
        font-size: 2rem;
    }
    
    .editor-controls {
        flex-direction: column;
    }
    
    .example-buttons {
        flex-direction: column;
    }
}

/* Loading animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #3498db;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Success/Error states */
.success {
    border-color: #27ae60;
    background-color: #f0f9f0;
}

.error {
    border-color: #e74c3c;
    background-color: #fdf2f2;
}

/* Modal styling */
.modal {
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal.hidden {
    display: none;
}

.modal-content {
    background-color: #fefefe;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    width: 90%;
    max-width: 800px;
    max-height: 80vh;
    overflow: hidden;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid #e9ecef;
    background-color: #f8f9fa;
}

.modal-header h3 {
    margin: 0;
    color: #333;
}

.close {
    color: #aaa;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    line-height: 1;
}

.close:hover,
.close:focus {
    color: #000;
}

.modal-body {
    padding: 20px;
    max-height: 60vh;
    overflow-y: auto;
}

.hex-info {
    margin-bottom: 15px;
    padding: 10px;
    background-color: #f8f9fa;
    border-radius: 4px;
}

.hex-info p {
    margin: 5px 0;
    font-size: 14px;
}

.hex-container {
    background-color: #f8f9fa;
    border: 1px solid #e9ecef;
    border-radius: 4px;
    padding: 15px;
    overflow-x: auto;
}

.hex-container pre {
    margin: 0;
    font-family: 'Courier New', monospace;
    font-size: 12px;
    line-height: 1.4;
    color: #333;
    white-space: pre-wrap;
    word-break: break-all;
}

/* Button styling for secondary button */
.btn-secondary {
    background-color: #6c757d;
    color: white;
}

.btn-secondary:hover {
    background-color: #5a6268;
}

.btn-secondary:disabled {
    background-color: #adb5bd;
    cursor: not-allowed;
    transform: none;
}