/* Sequence Analyzer - Minimal Clean Styles */

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
    padding: 20px;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 30px;
}

header {
    text-align: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid #e0e0e0;
}

h1 {
    font-size: 2em;
    color: #2c3e50;
    margin-bottom: 10px;
}

.subtitle {
    color: #7f8c8d;
    font-size: 1.1em;
}

.main-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    margin-bottom: 30px;
    padding: 15px;
    background: #f8f9fa;
    border-radius: 6px;
}

.main-nav a,
.main-nav .dropdown-btn {
    padding: 8px 16px;
    text-decoration: none;
    color: #3498db;
    border: 1px solid #3498db;
    border-radius: 4px;
    transition: all 0.3s;
    font-size: 0.9em;
    display: inline-block;
}

.main-nav a:hover,
.main-nav .dropdown-btn:hover {
    background: #3498db;
    color: white;
}

/* Dropdown menu */
.dropdown {
    position: relative;
    display: inline-block;
}

/* Dropdown button styles are now in .main-nav a above */

.dropdown-content {
    display: none;
    position: absolute;
    background-color: white;
    min-width: 180px;
    box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
    z-index: 1000;
    border-radius: 6px;
    overflow: hidden;
    margin-top: 2px;
    padding-top: 3px;
    right: 0;
}

.dropdown-content a {
    color: #2c3e50;
    padding: 12px 16px;
    text-decoration: none;
    display: block;
    transition: background-color 0.2s;
    border-radius: 0;
    margin: 0;
    font-size: 0.9em;
    border: none;
}

.dropdown-content a:hover {
    background-color: #3498db;
    color: white;
    transform: none;
    box-shadow: none;
}

.dropdown:hover .dropdown-content,
.dropdown.active .dropdown-content {
    display: block;
}

/* Mobile touch support for dropdown */
@media (max-width: 600px) {
    .dropdown.active .dropdown-content {
        display: block;
    }
    
    .dropdown-btn:active {
        background: #3498db;
        color: white;
    }
}

.input-section {
    margin-bottom: 30px;
}

label {
    display: block;
    margin-bottom: 10px;
    font-weight: 600;
    color: #34495e;
}

textarea {
    width: 100%;
    padding: 12px;
    border: 2px solid #ddd;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    font-size: 14px;
    resize: vertical;
    transition: border-color 0.3s;
}

textarea:focus {
    outline: none;
    border-color: #3498db;
}

.button-group {
    display: flex;
    gap: 10px;
    margin-top: 15px;
}

button {
    padding: 12px 24px;
    border: none;
    border-radius: 4px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-primary {
    background-color: #3498db;
    color: white;
    flex: 1;
}

.btn-primary:hover {
    background-color: #2980b9;
    transform: translateY(-1px);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background-color: #95a5a6;
    color: white;
}

.btn-secondary:hover {
    background-color: #7f8c8d;
}

.sequence-type-indicator {
    margin-top: 10px;
    padding: 8px 12px;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 600;
    display: inline-block;
}

.sequence-type-indicator.dna {
    background-color: #e8f5e9;
    color: #2e7d32;
}

.sequence-type-indicator.protein {
    background-color: #e3f2fd;
    color: #1565c0;
}

.results-container {
    margin-top: 30px;
    animation: fadeIn 0.3s;
}

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

.results-container h2 {
    color: #2c3e50;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid #e0e0e0;
}

.result-card {
    background: #f8f9fa;
    border: 1px solid #e0e0e0;
    border-radius: 6px;
    padding: 20px;
    margin-bottom: 20px;
}

.result-card h3 {
    color: #34495e;
    margin-bottom: 15px;
    font-size: 1.2em;
}

.result-item {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px solid #e8e8e8;
}

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

.label {
    font-weight: 600;
    color: #555;
}

.value {
    color: #2c3e50;
    font-weight: 500;
}

.value.positive {
    color: #27ae60;
}

.value.negative {
    color: #e74c3c;
}

.sequence-output {
    font-family: 'Courier New', monospace;
    font-size: 13px;
    background: white;
    padding: 12px;
    border-radius: 4px;
    border: 1px solid #ddd;
    margin-top: 10px;
    word-break: break-all;
    line-height: 1.8;
    color: #2c3e50;
}

.aa-composition {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 10px;
    margin-top: 10px;
}

.aa-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px;
    background: white;
    border-radius: 4px;
    border: 1px solid #ddd;
}

.aa-letter {
    font-weight: bold;
    color: #3498db;
    font-size: 1.1em;
    min-width: 20px;
}

.aa-count {
    color: #555;
    font-size: 0.9em;
}

.aa-percent {
    color: #999;
    font-size: 0.85em;
}

.prediction-note {
    margin-top: 10px;
    padding: 10px;
    background: #fff3cd;
    border-left: 4px solid #ffc107;
    border-radius: 4px;
    font-size: 0.9em;
    color: #856404;
}

.seo-content {
    margin-top: 50px;
    padding-top: 30px;
    border-top: 2px solid #e0e0e0;
    color: #555;
    font-size: 0.95em;
    line-height: 1.8;
}

.seo-content h2 {
    color: #2c3e50;
    margin-bottom: 15px;
    font-size: 1.3em;
}

.seo-content p {
    margin-bottom: 15px;
}

.seo-content strong {
    color: #34495e;
    font-weight: 600;
}

.seo-content a {
    color: #3498db;
    text-decoration: none;
}

.seo-content a:hover {
    text-decoration: underline;
}

/* Responsive Design */
@media (max-width: 600px) {
    .container {
        padding: 20px;
    }
    
    h1 {
        font-size: 1.5em;
    }
    
    .button-group {
        flex-direction: column;
    }
    
    .aa-composition {
        grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    }
    
    .result-item {
        flex-direction: column;
        gap: 5px;
    }
    
    .main-nav {
        flex-direction: column;
    }
    
    .main-nav a {
        text-align: center;
    }
    
    .dropdown-content {
        right: auto;
        left: 0;
    }
}

.update-info {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid #e0e0e0;
    text-align: center;
    font-size: 0.85em;
    color: #888;
}

.update-info strong {
    color: #666;
}