/* Slingo Board Checker Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    background: white;
    border-radius: 15px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
    overflow: hidden;
}

header {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    color: white;
    padding: 30px;
    text-align: center;
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

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

/* Navigation */
header nav {
    margin-top: 20px;
}

header nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

header nav li {
    margin: 0;
}

header nav a {
    color: #007bff;
    text-decoration: none;
    padding: 8px 16px;
    border-radius: 5px;
    transition: all 0.3s ease;
    font-weight: 500;
}

header nav a:hover {
    background: #e3f2fd;
    color: #0056b3;
    text-decoration: none;
}

header nav a:focus {
    outline: 2px solid #007bff;
    outline-offset: 2px;
}

#slingo-container {
    padding: 30px;
}

.board-section, .config-section, .controls-section, .results-section {
    margin-bottom: 30px;
    padding: 20px;
    border: 2px solid #e9ecef;
    border-radius: 10px;
    background: #f8f9fa;
}

.board-section h2, .config-section h2, .results-section h2 {
    color: #495057;
    margin-bottom: 20px;
    font-size: 1.5rem;
    border-bottom: 2px solid #dee2e6;
    padding-bottom: 10px;
}

.board-instructions {
    background: #e3f2fd;
    border: 1px solid #2196f3;
    border-radius: 8px;
    padding: 15px;
    margin-bottom: 20px;
    color: #1565c0;
}

.board-instructions p {
    margin: 0 0 15px 0;
    font-size: 0.95rem;
    line-height: 1.4;
}

.board-legend {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    margin-top: 10px;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    color: #495057;
}

.legend-marker {
    width: 20px;
    height: 20px;
    border-radius: 4px;
    border: 2px solid;
    position: relative;
}

.legend-marker.covered {
    background: linear-gradient(135deg, #28a745, #20c997);
    border-color: #1e7e34;
}

.legend-marker.covered::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 0.8rem;
    font-weight: bold;
}

.legend-marker.wild-marker {
    background: linear-gradient(135deg, #ffc107, #ff8f00);
    border-color: #ff8f00;
    border-width: 3px;
    box-shadow: 0 0 8px rgba(255, 193, 7, 0.6);
}

.legend-marker.super-wild-marker {
    background: linear-gradient(135deg, #9c27b0, #673ab7);
    border-color: #673ab7;
    border-width: 3px;
    box-shadow: 0 0 8px rgba(156, 39, 176, 0.6);
}

/* Slingo Grid */
.slingo-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 8px;
    max-width: 400px;
    margin: 0 auto 20px;
    background: #fff;
    padding: 15px;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.slingo-cell {
    aspect-ratio: 1;
    border: 2px solid #6c757d;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    background: #fff;
    color: #495057;
    position: relative;
}

.slingo-cell:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
    border-color: #007bff;
}

.slingo-cell.covered {
    background: linear-gradient(135deg, #28a745, #20c997);
    color: white;
    border-color: #1e7e34;
}

.slingo-cell.covered::after {
    content: '✓';
    position: absolute;
    font-size: 1.5rem;
    color: white;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.5);
}

.slingo-cell.covered:hover {
    background: linear-gradient(135deg, #1e7e34, #17a2b8);
}

/* Wild and Super Wild Markers */
.slingo-cell.wild-marker {
    background: linear-gradient(135deg, #ffc107, #ff8f00);
    color: #000;
    border-color: #ff8f00;
    border-width: 3px;
    animation: pulse-wild 2s infinite;
    box-shadow: 0 0 15px rgba(255, 193, 7, 0.6);
}

.slingo-cell.super-wild-marker {
    background: linear-gradient(135deg, #9c27b0, #673ab7);
    color: white;
    border-color: #673ab7;
    border-width: 3px;
    animation: pulse-super 2s infinite;
    box-shadow: 0 0 15px rgba(156, 39, 176, 0.6);
}

.slingo-cell.wild-marker:hover,
.slingo-cell.super-wild-marker:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}

@keyframes pulse-wild {
    0% { box-shadow: 0 0 0 0 rgba(255, 193, 7, 0.7); }
    70% { box-shadow: 0 0 0 10px rgba(255, 193, 7, 0); }
    100% { box-shadow: 0 0 0 0 rgba(255, 193, 7, 0); }
}

@keyframes pulse-super {
    0% { box-shadow: 0 0 0 0 rgba(156, 39, 176, 0.7); }
    70% { box-shadow: 0 0 0 10px rgba(156, 39, 176, 0); }
    100% { box-shadow: 0 0 0 0 rgba(156, 39, 176, 0); }
}

/* Draw Configuration */
.draw-row {
    background: white;
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 15px;
    border: 2px solid #dee2e6;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.draw-row h3 {
    color: #495057;
    margin-bottom: 15px;
    font-size: 1.1rem;
}

.draw-positions {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 10px;
}

.position-selector {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.position-selector label {
    font-size: 0.9rem;
    color: #6c757d;
    margin-bottom: 5px;
    font-weight: 500;
}

.position-selector select {
    width: 100%;
    padding: 8px;
    border: 2px solid #dee2e6;
    border-radius: 5px;
    background: white;
    font-size: 0.9rem;
    cursor: pointer;
    transition: border-color 0.3s ease;
}

.position-selector select:focus {
    outline: none;
    border-color: #007bff;
    box-shadow: 0 0 0 3px rgba(0,123,255,0.25);
}

.row-controls {
    display: flex;
    gap: 10px;
    justify-content: center;
    margin-top: 15px;
}

/* Buttons */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

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

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.btn-primary {
    background: linear-gradient(135deg, #007bff, #0056b3);
    color: white;
}

.btn-secondary {
    background: linear-gradient(135deg, #6c757d, #495057);
    color: white;
}

.btn-success {
    background: linear-gradient(135deg, #28a745, #1e7e34);
    color: white;
    font-size: 1.1rem;
    padding: 15px 30px;
}

/* Results Section */
.results-section {
    background: linear-gradient(135deg, #f8f9fa, #e9ecef);
    border: 2px solid #28a745;
}

.optimal-selection {
    background: white;
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 15px;
    border-left: 4px solid #28a745;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.optimal-selection h3 {
    color: #28a745;
    margin-bottom: 10px;
}

.marked-positions {
    background: #e3f2fd;
    border: 1px solid #2196f3;
    border-radius: 6px;
    padding: 10px;
    margin: 10px 0;
    font-family: 'Courier New', monospace;
    font-size: 0.95rem;
    color: #1565c0;
    font-weight: bold;
}

.optimal-selection .expected-score {
    font-size: 1.2rem;
    font-weight: bold;
    color: #007bff;
    margin: 10px 0;
}

.optimal-selection .reasoning {
    color: #6c757d;
    font-style: italic;
    margin-top: 10px;
}

.optimal-selection .wild-placement {
    background: #f8f9fa;
    padding: 15px;
    border-radius: 8px;
    margin-top: 15px;
    border-left: 4px solid #007bff;
}

.optimal-selection .wild-placement strong {
    color: #007bff;
    display: block;
    margin-bottom: 10px;
    font-size: 1.1rem;
}

.optimal-selection .wild-placement ul {
    margin: 0;
    padding-left: 20px;
}

.optimal-selection .wild-placement li {
    margin-bottom: 8px;
    padding: 5px 10px;
    background: white;
    border-radius: 4px;
    border: 1px solid #dee2e6;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
}

.optimal-selection .wild-placement li:last-child {
    margin-bottom: 0;
}

.analysis-summary {
    background: white;
    padding: 15px;
    border-radius: 8px;
    margin-top: 15px;
}

.analysis-summary h4 {
    color: #495057;
    margin-bottom: 10px;
}

.analysis-summary .stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 15px;
    margin-top: 10px;
}

.stat-item {
    text-align: center;
    padding: 10px;
    background: #f8f9fa;
    border-radius: 5px;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: bold;
    color: #007bff;
}

.stat-label {
    font-size: 0.9rem;
    color: #6c757d;
    margin-top: 5px;
}

/* Loading States */
.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid #007bff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-right: 15px;
}

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

/* Mobile Responsiveness */
@media (max-width: 768px) {
    .container {
        margin: 10px;
        border-radius: 10px;
    }
    
    header {
        padding: 20px;
    }
    
    header h1 {
        font-size: 2rem;
    }
    
    #slingo-container {
        padding: 20px;
    }
    
    .slingo-grid {
        max-width: 300px;
        gap: 6px;
    }
    
    .slingo-cell {
        font-size: 1rem;
    }
    
    .draw-positions {
        gap: 8px;
    }
    
    .position-selector select {
        padding: 6px;
        font-size: 0.8rem;
    }
    
    .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }
    
    .row-controls {
        flex-direction: column;
        align-items: center;
    }
    
    .analysis-summary .stats {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .slingo-grid {
        max-width: 250px;
        gap: 4px;
    }
    
    .slingo-cell {
        font-size: 0.9rem;
    }
    
    .draw-positions {
        gap: 6px;
    }
}

/* Ko-fi Navigation Link */
.ko-fi-nav-link {
    background: linear-gradient(45deg, #ff5f5f, #ff8a80);
    color: white !important;
    padding: 8px 16px;
    border-radius: 20px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(255, 95, 95, 0.3);
}

.ko-fi-nav-link:hover {
    background: linear-gradient(45deg, #ff4444, #ff6b6b);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(255, 95, 95, 0.4);
    text-decoration: none;
    color: white !important;
}

.ko-fi-nav-link:focus {
    outline: 2px solid rgba(255, 255, 255, 0.8);
    outline-offset: 2px;
}

/* Footer and Ko-fi Support Styles */
.footer {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 40px 0;
    margin-top: 40px;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    text-align: center;
}

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

.support-section h3 {
    color: white;
    margin-bottom: 15px;
    font-size: 1.5rem;
}

.support-section p {
    margin-bottom: 20px;
    opacity: 0.9;
    font-size: 1.1rem;
}

.ko-fi-button {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: #ff5f5f;
    color: white;
    padding: 15px 30px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: bold;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(255, 95, 95, 0.3);
    border: 2px solid transparent;
}

.ko-fi-button:hover {
    background: #ff4444;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 95, 95, 0.4);
    text-decoration: none;
    color: white;
}

.ko-fi-button:focus {
    outline: 3px solid rgba(255, 255, 255, 0.5);
    outline-offset: 2px;
}

.ko-fi-icon {
    font-size: 1.3rem;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.1); }
    100% { transform: scale(1); }
}

.footer-info {
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    padding-top: 20px;
    opacity: 0.8;
}

.footer-info p {
    margin: 5px 0;
    font-size: 0.95rem;
}

.footer-info a {
    color: #ffd700;
    text-decoration: none;
    font-weight: 500;
}

.footer-info a:hover {
    color: #ffed4e;
    text-decoration: underline;
}

/* Responsive footer */
@media (max-width: 768px) {
    .footer {
        padding: 30px 0;
    }
    
    .support-section h3 {
        font-size: 1.3rem;
    }
    
    .support-section p {
        font-size: 1rem;
    }
    
    .ko-fi-button {
        padding: 12px 25px;
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .ko-fi-button {
        padding: 10px 20px;
        font-size: 0.9rem;
    }
    
    .ko-fi-icon {
        font-size: 1.1rem;
    }
    
    /* Mobile navigation */
    header nav ul {
        gap: 10px;
    }
    
    header nav a {
        padding: 6px 12px;
        font-size: 0.9rem;
    }
}