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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: #ffffff;
    min-height: 100vh;
    color: #000000;
    line-height: 1.6;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 20px;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Screen management */
.screen {
    display: none;
    width: 100%;
    max-width: 700px;
    background: white;
    border: 2px solid #000000;
    border-radius: 8px;
    overflow: hidden;
    animation: fadeIn 0.3s ease-out;
}

.screen.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* No-Mouse Detection Screen */
.no-mouse-content {
    padding: 60px 40px;
    text-align: center;
    background: linear-gradient(135deg, #f8f8f8 0%, #ffffff 100%);
}

.no-mouse-content h1 {
    font-size: 3rem;
    margin-bottom: 30px;
    font-weight: 700;
    color: #000000;
}

.fun-message {
    margin-bottom: 40px;
}

.fun-message .main-text {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: #000000;
    font-weight: 600;
}

.fun-message .sub-text {
    font-size: 1.1rem;
    margin-bottom: 15px;
    color: #333333;
    font-weight: 500;
}

.fun-message .funny-text {
    font-size: 1rem;
    color: #666666;
    font-style: italic;
}

.device-icons {
    margin: 40px 0;
    font-size: 3rem;
    animation: bounce 2s infinite;
}

.device-icons span {
    margin: 0 15px;
    display: inline-block;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-10px); }
    60% { transform: translateY(-5px); }
}

.note {
    font-size: 0.9rem;
    color: #888888;
    font-weight: 500;
    margin-top: 30px;
}

/* Welcome Screen */
.welcome-content {
    padding: 60px 40px;
    text-align: center;
}

.welcome-content h1 {
    font-size: 2.5rem;
    margin-bottom: 20px;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.subtitle {
    font-size: 1.1rem;
    color: #666666;
    margin-bottom: 40px;
    font-weight: 400;
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.feature {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px;
    background: #f8f8f8;
    border: 1px solid #e0e0e0;
    border-radius: 6px;
    transition: all 0.2s ease;
}

.feature:hover {
    border-color: #000000;
    background: #f0f0f0;
}

.feature .icon {
    font-size: 1.8rem;
    margin-bottom: 10px;
}

.feature span:last-child {
    font-weight: 500;
    font-size: 0.9rem;
}

/* Buttons */
.btn {
    padding: 14px 28px;
    border: 2px solid #000000;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    display: inline-block;
    background: white;
    color: #000000;
    font-family: inherit;
}

.btn-primary {
    background: #000000;
    color: white;
}

.btn-primary:hover:not(:disabled) {
    background: #333333;
    transform: translateY(-1px);
}

.btn-primary:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    transform: none;
}

.btn-secondary {
    background: white;
    color: #000000;
}

.btn-secondary:hover {
    background: #f8f8f8;
    transform: translateY(-1px);
}

/* Test Container */
.test-header {
    background: #000000;
    color: white;
    padding: 30px;
}

.progress-container {
    margin-bottom: 20px;
}

.progress-bar {
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 10px;
}

.progress-fill {
    height: 100%;
    background: white;
    border-radius: 3px;
    transition: width 0.3s ease;
    width: 16.67%;
}

.progress-text {
    font-size: 0.85rem;
    opacity: 0.9;
    font-weight: 500;
}

.test-title h2 {
    font-size: 1.8rem;
    margin-bottom: 10px;
    font-weight: 600;
}

.test-title p {
    opacity: 0.9;
    font-size: 1rem;
    font-weight: 400;
}

/* Test Area */
.test-area {
    padding: 40px;
    min-height: 400px;
}

.test-step {
    display: none;
}

.test-step.active {
    display: block;
    animation: fadeIn 0.3s ease-out;
}

/* Button Test */
.button-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.test-button {
    background: #f8f8f8;
    border: 2px solid #e0e0e0;
    border-radius: 6px;
    padding: 25px 20px;
    text-align: center;
    transition: all 0.2s ease;
    cursor: pointer;
}

.test-button:hover {
    border-color: #000000;
    background: #f0f0f0;
}

.test-button.completed {
    border-color: #000000;
    background: #000000;
    color: white;
}

.test-button.completed .button-indicator {
    color: white;
    font-weight: 600;
}

.button-label {
    display: block;
    font-weight: 600;
    margin-bottom: 15px;
    color: #000000;
    font-size: 0.9rem;
}

.button-indicator {
    font-size: 1rem;
    color: #666666;
    font-weight: 500;
}

/* Scroll Test */
.scroll-container {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 30px;
    align-items: start;
}

.scroll-area {
    background: #f8f8f8;
    border: 2px dashed #cccccc;
    border-radius: 6px;
    padding: 30px;
    min-height: 250px;
    overflow-y: auto;
}

.scroll-content {
    text-align: center;
}

.scroll-content p {
    font-size: 1rem;
    margin-bottom: 30px;
    color: #000000;
    font-weight: 500;
}

.scroll-indicators {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.scroll-indicator {
    padding: 12px;
    background: #e0e0e0;
    border-radius: 6px;
    text-align: center;
    font-weight: 500;
    color: #000000;
    font-size: 0.9rem;
}

.scroll-indicator.completed {
    background: #000000;
    color: white;
}

.scroll-stats {
    background: #f8f8f8;
    border-radius: 6px;
    padding: 20px;
    border: 1px solid #e0e0e0;
}

.stat {
    display: flex;
    justify-content: space-between;
    margin-bottom: 12px;
    padding: 8px 0;
    border-bottom: 1px solid #e0e0e0;
    font-size: 0.9rem;
}

.stat:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.stat-label {
    font-weight: 600;
    color: #000000;
}

/* Pointer Tracking Test */
.tracking-area {
    text-align: center;
}

#tracking-canvas {
    border: 2px solid #e0e0e0;
    border-radius: 6px;
    background: #f8f8f8;
    margin-bottom: 20px;
    cursor: crosshair;
    max-width: 100%;
}

.tracking-instructions p {
    font-size: 1rem;
    margin-bottom: 20px;
    color: #000000;
    font-weight: 500;
}

.tracking-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    max-width: 400px;
    margin: 0 auto;
}

/* Double-Click Test */
.doubleclick-area {
    text-align: center;
}

#click-target {
    background: #000000;
    color: white;
    padding: 35px;
    border-radius: 6px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
        transition: all 0.2s ease;
    margin-bottom: 30px;
    user-select: none;
    border: 2px solid #000000;
}

#click-target:hover {
    background: #333333;
}

#click-target.clicked {
    background: #666666;
    transform: scale(0.98);
}

.click-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    max-width: 400px;
    margin: 0 auto;
}

/* Drag & Drop Test */
.drag-area {
    text-align: center;
}

#drag-source {
    background: #000000;
    color: white;
    padding: 25px;
    border-radius: 6px;
    font-weight: 600;
    cursor: grab;
    margin-bottom: 30px;
    user-select: none;
    transition: all 0.2s ease;
    border: 2px solid #000000;
}

#drag-source:active {
    cursor: grabbing;
}

#drag-source.dragging {
    opacity: 0.8;
    transform: scale(0.95);
}

#drag-target {
    background: #f8f8f8;
    border: 2px dashed #cccccc;
    padding: 35px;
    border-radius: 6px;
    font-weight: 600;
    color: #666666;
    transition: all 0.2s ease;
}

#drag-target.dropped {
    border-color: #000000;
    background: #000000;
    color: white;
}

.drag-stats {
    margin-top: 20px;
}

/* Polling Rate Test */
.polling-area {
    text-align: center;
}

.polling-instructions p {
    font-size: 1rem;
    margin-bottom: 20px;
    color: #000000;
    font-weight: 500;
}

.countdown {
    font-size: 3.5rem;
    font-weight: 700;
    color: #000000;
    margin: 30px 0;
    font-family: 'Inter', monospace;
}

.polling-stats {
    max-width: 300px;
    margin: 0 auto;
}

/* Test Controls */
.test-controls {
    padding: 30px;
    text-align: center;
    background: #f8f8f8;
    border-top: 1px solid #e0e0e0;
}

/* Skip Button */
.skip-button {
    background: #666666;
    color: white;
    border: 2px solid #666666;
    border-radius: 6px;
    padding: 10px 20px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    margin-top: 20px;
    font-family: inherit;
}

.skip-button:hover {
    background: #555555;
    border-color: #555555;
    transform: translateY(-1px);
}

.skip-button:active {
    transform: translateY(0);
}

/* Results Screen */
.results-content {
    padding: 50px 40px;
    text-align: center;
}

.results-content h2 {
    font-size: 2.2rem;
    margin-bottom: 40px;
    color: #000000;
    font-weight: 700;
}

.score-display {
    margin-bottom: 40px;
}

.score-circle {
    width: 180px;
    height: 180px;
    border-radius: 50%;
    background: #000000;
    color: white;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    border: 3px solid #000000;
}

.score-circle #final-score {
    font-size: 2.8rem;
    font-weight: 700;
    margin-bottom: 5px;
}

.score-label {
    font-size: 0.8rem;
    opacity: 0.9;
    font-weight: 500;
}

.score-breakdown {
    background: #f8f8f8;
    border-radius: 6px;
    padding: 25px;
    margin-bottom: 30px;
    text-align: left;
    border: 1px solid #e0e0e0;
}

.score-breakdown h3 {
    text-align: center;
    margin-bottom: 20px;
    color: #000000;
    font-weight: 600;
}

.breakdown-item {
    display: flex;
    justify-content: space-between;
    padding: 12px 0;
    border-bottom: 1px solid #e0e0e0;
    font-size: 0.9rem;
}

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

.test-name {
    font-weight: 500;
    color: #000000;
}

.test-score {
    font-weight: 700;
    color: #000000;
}

.health-assessment {
    background: #f0f0f0;
    border: 1px solid #cccccc;
    border-radius: 6px;
    padding: 20px;
    margin-bottom: 30px;
}

.health-assessment h3 {
    color: #000000;
    margin-bottom: 10px;
    font-weight: 600;
}

.health-assessment p {
    color: #000000;
    font-size: 1rem;
    font-weight: 500;
}

.action-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    animation: fadeIn 0.3s ease-out;
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: white;
    border: 2px solid #000000;
    border-radius: 12px;
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from { transform: translateY(-50px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 25px 30px;
    border-bottom: 2px solid #e0e0e0;
}

.modal-header h3 {
    margin: 0;
    font-size: 1.5rem;
    font-weight: 600;
    color: #000000;
}

.close-modal {
    background: none;
    border: none;
    font-size: 2rem;
    cursor: pointer;
    color: #666666;
    padding: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.2s ease;
}

.close-modal:hover {
    background: #f0f0f0;
    color: #000000;
}

/* Share Card Styles */
.share-card {
    background: linear-gradient(135deg, #f8f8f8 0%, #ffffff 100%);
    border: 2px solid #000000;
    border-radius: 12px;
    margin: 25px 30px;
    overflow: hidden;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

.card-header {
    background: #000000;
    color: white;
    padding: 25px;
    text-align: center;
}

.card-header h2 {
    margin: 0 0 8px 0;
    font-size: 1.8rem;
    font-weight: 700;
}

.card-header p {
    margin: 0;
    font-size: 1rem;
    opacity: 0.9;
}

.card-score {
    padding: 30px;
    text-align: center;
    background: white;
}

.card-score .score-display {
    display: inline-block;
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: #000000;
    color: white;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
}

.card-score #share-score {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 5px;
}

.card-score .score-label {
    font-size: 0.7rem;
    opacity: 0.9;
    font-weight: 500;
}

.card-breakdown {
    background: #f8f8f8;
    padding: 25px;
}

.card-breakdown .breakdown-item {
    display: flex;
    justify-content: space-between;
    padding: 12px 0;
    border-bottom: 1px solid #e0e0e0;
    font-size: 0.9rem;
}

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

.card-breakdown .breakdown-item span:first-child {
    font-weight: 500;
    color: #000000;
}

.card-breakdown .breakdown-item span:last-child {
    font-weight: 700;
    color: #000000;
}

.card-footer {
    background: white;
    padding: 25px;
    text-align: center;
    border-top: 1px solid #e0e0e0;
}

.card-footer p {
    margin: 0 0 10px 0;
    font-size: 1rem;
    font-weight: 600;
    color: #000000;
}

.card-footer small {
    color: #666666;
    font-size: 0.8rem;
}

/* Share Options */
.share-options {
    padding: 25px 30px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 15px;
}

.share-btn {
    background: white;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    padding: 15px 12px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: #000000;
    font-family: inherit;
}

.share-btn:hover {
    border-color: #000000;
    background: #f8f8f8;
    transform: translateY(-2px);
}

.share-btn span:first-child {
    font-size: 1.5rem;
}

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

/* Toast Animations */
@keyframes slideInRight {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

@keyframes slideOutRight {
    from { transform: translateX(0); opacity: 1; }
    to { transform: translateX(100%); opacity: 0; }
}

/* Responsive adjustments for modal */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    .welcome-content {
        padding: 40px 25px;
    }
    
    .welcome-content h1 {
        font-size: 2.2rem;
    }
    
    .features {
        grid-template-columns: 1fr 1fr;
        gap: 15px;
    }
    
    .test-header {
        padding: 25px;
    }
    
    .test-area {
        padding: 25px;
    }
    
    .button-grid {
        grid-template-columns: 1fr;
    }
    
    .scroll-container {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .tracking-stats,
    .click-stats {
        grid-template-columns: 1fr;
    }
    
    .results-content {
        padding: 40px 25px;
    }
    
    .score-circle {
        width: 150px;
        height: 150px;
    }
    
    .score-circle #final-score {
        font-size: 2.4rem;
    }
    
    .action-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 280px;
    }

    .modal-content {
        width: 95%;
        margin: 20px;
    }
    
    .modal-header {
        padding: 20px 25px;
    }
    
    .share-card {
        margin: 20px 25px;
    }
    
    .card-header {
        padding: 20px;
    }
    
    .card-header h2 {
        font-size: 1.5rem;
    }
    
    .card-score {
        padding: 25px;
    }
    
    .card-score .score-display {
        width: 100px;
        height: 100px;
    }
    
    .card-score #share-score {
        font-size: 1.8rem;
    }
    
    .share-options {
        grid-template-columns: repeat(2, 1fr);
        padding: 20px 25px;
    }
}

/* Credits */
.credits {
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid #e0e0e0;
    text-align: center;
}

.credits p {
    color: #666666;
    font-size: 0.9rem;
    margin: 0;
}

.credits a {
    color: #000000;
    text-decoration: none;
    font-weight: 600;
    transition: color 0.2s ease;
}

.credits a:hover {
    color: #333333;
    text-decoration: underline;
}

/* Responsive Design */

/* Test Instructions */
.test-instructions {
    background: #f8f8f8;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 30px;
    text-align: center;
}

.test-instructions h3 {
    color: #000000;
    font-size: 1.2rem;
    margin-bottom: 10px;
    font-weight: 600;
}

.test-instructions p {
    color: #666666;
    font-size: 0.95rem;
    margin: 0;
    line-height: 1.5;
}

/* Button Progress Indicators */
.button-progress {
    margin-top: 15px;
    text-align: center;
}

.progress-dot {
    width: 8px;
    height: 8px;
    background: #cccccc;
    border-radius: 50%;
    display: inline-block;
    transition: all 0.3s ease;
}

.test-button.completed .progress-dot {
    background: #00ff00;
    transform: scale(1.2);
    box-shadow: 0 0 10px rgba(0, 255, 0, 0.5);
}

/* Test Status */
.test-status {
    margin-top: 25px;
    text-align: center;
}

.status-item {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 15px;
    background: #f0f0f0;
    border-radius: 6px;
    border: 1px solid #e0e0e0;
}

.status-icon {
    font-size: 1.2rem;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.status-item span:last-child {
    color: #000000;
    font-weight: 500;
    font-size: 0.9rem;
}

/* Enhanced Button Test */