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

body {
    font-family: 'Arial', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    color: #333;
}

#game-container {
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    overflow: hidden;
    max-width: 1200px;
    width: 95%;
}

header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 20px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

#header-left {
    display: flex;
    align-items: center;
}

header h1 {
    font-size: 2.5rem;
    font-weight: bold;
    letter-spacing: 2px;
    cursor: pointer;
    transition: opacity 0.2s ease, transform 0.2s ease;
    user-select: none;
}

header h1:hover {
    opacity: 0.8;
    transform: scale(1.02);
}

header h1:active {
    transform: scale(0.98);
}

#header-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

/* Back button */
.back-button {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 25px;
    color: white;
    text-decoration: none;
    font-size: 0.75rem;
    font-weight: bold;
    font-family: 'Impact', 'Arial Black', sans-serif;
    letter-spacing: 1px;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.2);
}

.back-button:hover {
    background: rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateX(-2px);
    color: white;
}

.back-button:active {
    transform: translateX(-1px) scale(0.98);
}

.back-arrow {
    font-size: 1rem;
    font-weight: bold;
}

.back-text {
    white-space: nowrap;
}

#score-display {
    display: flex;
    gap: 30px;
}

.score-item {
    text-align: right;
}

.score-item .label {
    display: block;
    font-size: 0.9rem;
    opacity: 0.9;
}

.score-item span:last-child {
    display: block;
    font-size: 1.8rem;
    font-weight: bold;
}

/* Sound toggle button */
.sound-toggle {
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid rgba(255, 255, 255, 0.5);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 24px;
    flex-shrink: 0;
}

.sound-toggle:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.1);
}

.sound-toggle:active {
    transform: scale(0.95);
}

.sound-toggle.muted {
    background: rgba(231, 76, 60, 0.3);
    border-color: rgba(231, 76, 60, 0.5);
}

/* Header-based Difficulty Selector */
.difficulty-header {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    backdrop-filter: blur(10px);
}

.difficulty-header .difficulty-label {
    font-size: 0.9rem;
    font-weight: 600;
    color: white;
    white-space: nowrap;
}

.difficulty-btn-header {
    background: rgba(255, 255, 255, 0.3);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.5);
    width: 28px;
    height: 28px;
    border-radius: 50%;
    font-size: 18px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.difficulty-btn-header:hover {
    background: rgba(255, 255, 255, 0.5);
    transform: scale(1.1);
}

.difficulty-btn-header:active {
    transform: scale(0.95);
}

.difficulty-header .difficulty-display {
    font-size: 1.3rem;
    font-weight: bold;
    color: white;
    min-width: 30px;
    text-align: center;
}

.difficulty-header.hidden {
    display: none;
}

main {
    position: relative;
    min-height: 600px;
    height: 600px;
    overflow-y: auto; /* Enable scrolling */
}

#game-canvas {
    display: block;
    width: 100%;
    height: 600px;
    background: #f5f5f5;
}

.screen {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    min-height: 100%;
    background: rgba(255, 255, 255, 0.98);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 40px;
    text-align: center;
}

.screen-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.screen.hidden {
    display: none;
}

.hidden {
    display: none !important;
}

.screen h2 {
    font-size: 2.5rem;
    color: #667eea;
    margin-bottom: 20px;
}

.screen p {
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 30px;
    max-width: 500px;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 15px 40px;
    font-size: 1.2rem;
    font-weight: bold;
    border-radius: 50px;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.6);
}

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

#final-score-display {
    margin: 20px 0;
}

#final-score-display p {
    font-size: 1.5rem;
    margin: 10px 0;
}

#final-score {
    font-weight: bold;
    color: #667eea;
    font-size: 2rem;
}

#high-score-message {
    color: #f39c12;
    font-size: 1.8rem;
    font-weight: bold;
    animation: pulse 1s infinite;
    margin-bottom: 20px;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

/* Facility Styles */
.facility {
    cursor: pointer;
    transition: all 0.2s;
}

.facility.urinal {
    fill: #3498db;
}

.facility.urinal.occupied {
    fill: #e74c3c;
}

.facility.urinal.available:hover {
    fill: #2980b9;
}

.facility.cubicle {
    fill: #2ecc71;
}

.facility.cubicle.occupied {
    fill: #e67e22;
}

.facility.cubicle.available:hover {
    fill: #27ae60;
}

.facility.out-of-order {
    fill: #95a5a6;
    cursor: not-allowed;
}

/* Male waiting indicator */
.male-waiting {
    animation: bounce 0.5s infinite alternate;
}

@keyframes bounce {
    from {
        transform: translateY(0);
    }
    to {
        transform: translateY(-10px);
    }
}

/* Time bar colors */
.time-bar-green {
    fill: #2ecc71;
}

.time-bar-yellow {
    fill: #f39c12;
}

.time-bar-orange {
    fill: #e67e22;
}

.time-bar-red {
    fill: #e74c3c;
}

/* Touch-friendly interface */
.facility {
    cursor: pointer;
    transition: all 0.2s;
    min-width: 44px; /* Minimum touch target size */
    min-height: 44px;
}

.facility:hover {
    transform: scale(1.05);
}

.facility:active {
    transform: scale(0.95);
}

/* Mobile optimizations */
@media (hover: none) and (pointer: coarse) {
    .facility:hover {
        transform: none;
    }
    
    .facility:active {
        transform: scale(0.95);
        background-color: rgba(255, 255, 255, 0.2);
    }
    
    .btn-primary {
        min-height: 48px; /* Larger touch targets */
        font-size: 1.1rem;
    }
}

/* Responsive Design */
@media (max-width: 1024px) {
    #game-container {
        width: 98%;
        margin: 10px auto;
    }
    
    #game-canvas {
        height: 550px;
    }
}

@media (max-width: 768px) {
    header {
        flex-direction: column;
        gap: 15px;
        padding: 15px 20px;
    }

    header h1 {
        font-size: 2rem;
    }

    #header-left {
        width: 100%;
        justify-content: center;
        order: -2;
    }

    #header-right {
        width: 100%;
        justify-content: center;
        flex-wrap: wrap;
    }

    .difficulty-header {
        order: -1;
        width: 100%;
        justify-content: center;
    }

    #score-display {
        gap: 20px;
        justify-content: center;
    }

    .score-item span:last-child {
        font-size: 1.5rem;
    }

    .screen h2 {
        font-size: 2rem;
    }

    .screen p {
        font-size: 1rem;
        padding: 0 20px;
    }

    #game-canvas {
        height: 500px;
    }
    
    /* Larger touch targets for mobile */
    .btn-primary {
        padding: 15px 35px;
        font-size: 1.1rem;
        min-height: 50px;
    }
}

@media (max-width: 480px) {
    #game-container {
        width: 100%;
        border-radius: 0;
        min-height: 100vh;
    }
    
    header {
        padding: 12px 15px;
    }

    header h1 {
        font-size: 1.8rem;
        letter-spacing: 1px;
    }
    
    #header-right {
        gap: 10px;
    }

    .back-button {
        padding: 6px 10px;
        font-size: 0.65rem;
        gap: 4px;
    }

    .back-arrow {
        font-size: 0.9rem;
    }
    
    .difficulty-header .difficulty-label {
        font-size: 0.8rem;
    }
    
    .difficulty-btn-header {
        width: 24px;
        height: 24px;
        font-size: 16px;
    }
    
    .difficulty-header .difficulty-display {
        font-size: 1.1rem;
        min-width: 25px;
    }
    
    #score-display {
        gap: 15px;
    }
    
    .score-item span:last-child {
        font-size: 1.3rem;
    }

    .screen {
        padding: 30px 20px;
    }
    
    .screen h2 {
        font-size: 1.8rem;
    }
    
    .screen p {
        font-size: 0.95rem;
        line-height: 1.4;
    }

    .btn-primary {
        padding: 12px 30px;
        font-size: 1rem;
        min-height: 48px;
        width: 200px;
    }

    #game-canvas {
        height: 450px;
    }
    
    /* Adjust final score display for mobile */
    #final-score-display p {
        font-size: 1.2rem;
        margin: 8px 0;
    }
    
    #final-score {
        font-size: 1.6rem;
    }
    
    #high-score-message {
        font-size: 1.4rem;
    }
}

@media (max-width: 320px) {
    header h1 {
        font-size: 1.5rem;
    }
    
    .btn-primary {
        width: 180px;
        font-size: 0.9rem;
    }
    
    #game-canvas {
        height: 400px;
    }
}

/* Landscape orientation on mobile */
@media (max-height: 500px) and (orientation: landscape) {
    #game-container {
        max-width: none;
        width: 100%;
        height: 100vh;
        border-radius: 0;
    }
    
    header {
        padding: 8px 15px;
    }
    
    header h1 {
        font-size: 1.5rem;
    }
    
    .score-item span:last-child {
        font-size: 1.2rem;
    }
    
    #game-canvas {
        height: calc(100vh - 80px);
    }
    
    .screen {
        padding: 20px;
    }
    
    .screen h2 {
        font-size: 1.5rem;
        margin-bottom: 10px;
    }
    
    .screen p {
        font-size: 0.9rem;
        margin-bottom: 15px;
    }
    
    .btn-primary {
        padding: 10px 25px;
        font-size: 0.9rem;
    }
}

/* High DPI displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    #game-canvas {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
}

/* Accessibility improvements */
@media (prefers-reduced-motion: reduce) {
    .facility,
    .btn-primary,
    .male-waiting {
        animation: none !important;
        transition: none !important;
    }
    
    #high-score-message {
        animation: none !important;
    }
}

/* Error message styling */
.error-message {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10000;
}

.error-content {
    background: white;
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    max-width: 400px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.error-content h3 {
    color: #e74c3c;
    margin-bottom: 15px;
    font-size: 1.5rem;
}

.error-content p {
    color: #666;
    margin-bottom: 20px;
    line-height: 1.4;
}

/* Loading state */
.loading {
    opacity: 0.7;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 40px;
    height: 40px;
    margin: -20px 0 0 -20px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* User feedback animations */
.success-feedback {
    animation: successPulse 0.3s ease-out;
}

@keyframes successPulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); background-color: rgba(46, 204, 113, 0.3); }
    100% { transform: scale(1); }
}

.error-feedback {
    animation: errorShake 0.5s ease-out;
}

@keyframes errorShake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

/* User message notifications */
.user-message {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 12px 20px;
    border-radius: 5px;
    color: white;
    font-weight: bold;
    z-index: 1000;
    animation: slideIn 0.3s ease-out;
    max-width: 300px;
    word-wrap: break-word;
}

.user-message.info {
    background: #3498db;
}

.user-message.error {
    background: #e74c3c;
}

.user-message.success {
    background: #2ecc71;
}

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

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    body {
        background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    }
    
    #game-container {
        background: #2c3e50;
        color: #ecf0f1;
    }
    
    .screen {
        background: rgba(44, 62, 80, 0.98);
        color: #ecf0f1;
    }
    
    .screen h2 {
        color: #3498db;
    }
    
    .screen p {
        color: #bdc3c7;
    }
    
    .error-content {
        background: #34495e;
        color: #ecf0f1;
    }
    
    .error-content p {
        color: #bdc3c7;
    }
}


/* Video Container - Below button, requires scrolling */
.video-container {
    position: relative;
    width: 100%;
    max-width: 400px;
    margin: 30px auto 20px;
    padding-bottom: 56.25%; /* 16:9 aspect ratio */
    height: 0;
    overflow: hidden;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    flex-shrink: 0;
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: 8px;
    border: none;
}



/* Improved Game Theming */
body {
    font-family: 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    background-attachment: fixed;
}

#game-container {
    background: linear-gradient(to bottom, #ffffff 0%, #f8f9fa 100%);
    border: 3px solid rgba(102, 126, 234, 0.3);
}

header h1 {
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
    font-family: 'Impact', 'Arial Black', sans-serif;
    letter-spacing: 4px;
}

.screen h2 {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: none;
    font-family: 'Impact', 'Arial Black', sans-serif;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    position: relative;
    overflow: hidden;
    font-family: 'Segoe UI', sans-serif;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn-primary:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.6);
}

/* Mobile Responsive Adjustments */
@media (max-width: 600px) {
    .video-container {
        max-width: 320px;
        margin: 20px auto 20px;
    }
    
    .screen {
        padding: 30px 15px;
    }
    
    .screen h2 {
        font-size: 2rem;
    }
    
    .screen p {
        font-size: 0.95rem;
    }
}