body {
    font-family: Arial, sans-serif;
    background-color: #f0f8ff;
    text-align: center;
}

.container {
    position: relative;
    width: 90%;
    margin: 0 auto;
    padding: 20px;
    min-height: 100vh;
    /* Ockerfarbener Papierhintergrund mit kariertem Muster (wie Mathe-Zettel) */
    background-color: #f3f1ec; /* leichte Papierfarbe */
    background-image:
        linear-gradient(0deg, rgba(30, 80, 200, 0.12) 1px, transparent 1px), /* horizontale feine Linien */
        linear-gradient(90deg, rgba(30, 80, 200, 0.12) 1px, transparent 1px); /* vertikale feine Linien */
    background-size: 24px 24px; /* Kästchengröße */
    background-position: top left;
}

#settings, #game, #result {
    margin: 20px 20;
    padding: 20px;
    background-color: white;
    border-radius: 10px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.hidden {
    display: none !important;
}

button {
    padding: 10px 20px;
    margin: 10px;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s;
}

button:hover {
    background-color: #45a049;
}

#end-game {
    background-color: #ff4444;
}

#end-game:hover {
    background-color: #cc0000;
}

#skip-question {
    background-color: #ff9800;
}

#skip-question:hover {
    background-color: #f57c00;
}

#question {
    font-size: 24px;
    margin: 20px 0;
}

#timer {
    font-size: 20px;
    color: red;
}

#timer-container {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 10px 0;
}

#progress-bar {
    width: 100px;
    height: 15px;
    background-color: #eee;
    border-radius: 10px;
    overflow: hidden;
}

#progress {
    width: 100%;
    height: 100%;
    background-color: #007bff;
    transition: width 1s linear;
}

input, select {
    padding: 10px;
    margin: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 16px;
}

/* Hide number input spinner controls to prevent cheating */
input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

/* Firefox */
input[type="number"] {
    -moz-appearance: textfield;
    appearance: textfield;
}

label {
    display: block;
    margin-top: 10px;
    font-weight: bold;
}

#score-list {
    margin-top: 20px;
    text-align: left;
    padding: 10px;
}

#score-list p {
    margin: 5px 0;
    padding: 5px;
    background-color: #f9f9f9;
    border-radius: 3px;
}

#result-gif {
    max-width: 200px;
    margin: 20px auto;
    border-radius: 10px;
    display: none; /* erst anzeigen, wenn valides src vorhanden ist */
}

/* Verhindert defektes Bild-Icon, wenn kein/leereres src vorhanden ist */
#result-gif:not([src]),
#result-gif[src=""] {
    display: none !important;
}

/* Wenn ein valides src gesetzt ist, Bild anzeigen */
#result-gif[src]:not([src=""]) {
    display: block !important;
}

.result-placeholder {
    font-size: 48px;
    margin: 20px auto;
    display: block;
    text-align: center;
}

.danger-button {
    background-color: #ff4444;
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    margin-top: 20px;
}

.danger-button:hover {
    background-color: #cc0000;
}

.warning {
    color: #8a6d3b; /* Dunkelgelb */
    background-color: #fcf8e3; /* Hellgelb */
    border: 1px solid #faebcc;
    padding: 10px;
    border-radius: 4px;
    margin: 10px 0;
    font-size: 0.9em;
    text-align: center;
}

@keyframes wrongAnswer {
    0% {
        background-color: white;
    }
    50% {
        background-color: #ce6071;
    }
    100% {
        background-color: white;
    }
}

.wrong-answer {
    animation: wrongAnswer 0.7s ease;
}

@keyframes correctAnswer {
    0% { background-color: white; }
    50% { background-color: #90EE90; }    
    100% { background-color: white; }
}

.correct-answer {
    animation: correctAnswer 0.5s;
}

.gallery-button {
    background-color: #4CAF50;
    color: white;
    margin-top: 10px;
}

.heart-button {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    padding: 10px;
    transition: transform 0.2s;
}

.heart-button:hover {
    transform: scale(1.2);
}

.heart-button.saved {
    color: red;
}

/* Gallery Modal */
#gallery-modal .modal-content {
    max-width: 90%;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 15px;
    margin-top: 20px;
    max-height: 70vh;
    overflow-y: auto;
    padding: 10px;
    background: #f9f9f9;
    border-radius: 5px;
}

.gallery-item {
    position: relative;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    aspect-ratio: 1 / 1;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.gallery-item .remove-gif-btn,
.gallery-item .copy-gif-btn {
    position: absolute;
    top: 5px;
    background: rgba(0, 0, 0, 0.6);
    color: white;
    border: none;
    border-radius: 50%;
    width: 28px;
    height: 28px;
    font-size: 14px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.2s;
}

.gallery-item:hover .remove-gif-btn,
.gallery-item:hover .copy-gif-btn {
    opacity: 1;
}

.gallery-item .remove-gif-btn {
    right: 5px;
}

.gallery-item .copy-gif-btn {
    right: 40px;
}

.gallery-item .remove-gif-btn:hover,
.gallery-item .copy-gif-btn:hover {
    background: rgba(0, 0, 0, 0.8);
}


/* Pagination */
#pagination-controls {
    margin-top: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
}

#pagination-controls.hidden {
    display: none;
}

#pagination-controls button {
    margin: 0 10px;
}

#pagination-controls button:disabled {
    background-color: #ccc;
    cursor: not-allowed;
}

#page-info {
    font-weight: bold;
}

.drawing-section {
    margin: 10px 0;
}

.drawing-tools {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 10px;
}

#drawing-controls {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: rgba(255, 255, 255, 0.9);
    padding: 10px;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
    z-index: 3;
    display: none;
    transition: all 0.3s ease-in-out;
}

#minimize-button {
    padding: 0px 8px;
    font-size: 16px;
    font-weight: bold;
    background-color: #f0f0f0;
    border: 1px solid #ccc;
}

#drawing-controls.minimized {
    width: 50px;
    height: 50px;
    padding: 0;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

#drawing-controls.minimized::after {
    content: '🖊️';
    font-size: 24px;
}

#drawing-controls.minimized > * {
    display: none;
}

#drawing-controls.game-active {
    display: block;
}

#drawing-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    background-color: transparent;
    touch-action: none;
    pointer-events: none;
}

#drawing-canvas.game-active {
    pointer-events: auto;
    touch-action: none; /* Prevent scroll/zoom on touch */
}

.content {
    position: relative;
    z-index: 2;
    pointer-events: auto;
}

.drawing-controls {
    display: flex;
    gap: 10px;
    margin: 10px 0;
    align-items: center;
    justify-content: center;
}

.drawing-controls button {
    padding: 5px 10px;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

.drawing-controls button:hover {
    background-color: #45a049;
}

.sound-button {
    font-size: 1.2em;
    padding: 5px 10px;
    cursor: pointer;
    background: none;
    border: 1px solid #ccc;
    border-radius: 5px;
    margin: 0 5px;
}

.sound-button:hover {
    background-color: #f0f0f0;
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-right: 20px; /* Platz für den Button */
}

.settings-button {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    padding: 0;
    margin: 0;
}

/* Settings Modal */
.modal {
    position: fixed;
    z-index: 100;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0,0,0,0.4);
    display: none;
}

.modal:not(.hidden) {
    display: flex;
}

.modal-content {
    background-color: #fefefe;
    margin: 10% auto;
    padding: 20px;
    border: 1px solid #888;
    width: 90%;
    max-width: 500px;
    border-radius: 10px;
    position: relative;
    text-align: left;
}

/* Prevent background scroll when a modal is open */
body.no-scroll {
    overflow: hidden;
}

.close-button {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
}

.close-button:hover,
.close-button:focus {
    color: black;
    text-decoration: none;
    cursor: pointer;
}

#settings-content hr {
    margin: 20px 0;
}

#security-check p {
    margin-bottom: 10px;
}

#settings-content input[type="text"] {
    width: calc(100% - 22px);
}

/* Responsive Design and Mobile Support */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    #settings, #game, #result {
        margin: 10px 0;
        padding: 15px;
    }
    
    .hidden-mobile {
        display: none !important;
    }
    
    .hidden-desktop {
        display: block !important;
    }
    
    
    #drawing-controls {
        position: fixed;
        bottom: 10px;
        right: 10px;
        margin: 0;
        background: rgba(255, 255, 255, 0.95);
        padding: 6px;
        border-radius: 6px;
        box-shadow: 0 2px 8px rgba(0,0,0,0.15);
    }
    
    #drawing-controls .drawing-tools {
        flex-direction: column;
        gap: 4px;
    }
    
    #drawing-controls button {
        font-size: 0.9em;
        padding: 4px 8px;
    }
    
    #color-picker {
        width: 30px;
        height: 25px;
    }
    
    #line-width {
        width: 60px;
    }
    
    .drawing-section {
        height: 200px;
        position: relative;
        background-color: #f9f9f9;
        border: 1px solid #ddd;
        border-radius: 8px;
        margin: 10px 0;
    }
    
    #drawing-canvas {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
    }
    
    #question {
        font-size: 2em;
        margin-bottom: 15px;
    }
}

@media (min-width: 769px) {
    .hidden-desktop {
        display: none !important;
    }
    
    .hidden-mobile {
        display: inline-block !important;
    }
}

/* Custom Numpad Styles */
.answer-section {
    margin: 20px 0;
}

.answer-input-group {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-bottom: 10px;
}

/* Inline-Buttons neben dem Numpad-Toggle */
.answer-input-group .action-buttons {
    display: flex;
    align-items: center;
    gap: 6px;
    margin: 0;
}

.answer-input-group .action-buttons button {
    margin: 0;
}

#answer {
    font-size: 1.5em;
    text-align: center;
    width: 200px;
    padding: 8px;
    border: 2px solid #ddd;
    border-radius: 6px;
}

.numpad-toggle-btn {
    font-size: 1.2em;
    width: 40px;
    height: 40px;
    border: 2px solid #007bff;
    border-radius: 6px;
    background-color: #007bff;
    color: white;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0;
    padding: 0;
}

.numpad-toggle-btn:hover {
    background-color: #0056b3;
    border-color: #0056b3;
}

.numpad-toggle-btn.active {
    background-color: #28a745;
    border-color: #28a745;
}

.numpad {
    display: none;
    grid-template-columns: 1fr;
    gap: 3px;
    max-width: 120px;
    margin: 0 auto;
    padding: 6px;
    background-color: #f8f9fa;
    border-radius: 6px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    border: 1px solid #dee2e6;
}

.numpad.show {
    display: grid;
}

.numpad-row {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 3px;
}

.numpad-btn {
    width: 32px;
    height: 32px;
    font-size: 0.9em;
    font-weight: bold;
    border: 1px solid #ddd;
    border-radius: 4px;
    background-color: white;
    color: #333;
    cursor: pointer;
    transition: all 0.15s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0;
    padding: 0;
}

.numpad-btn:hover {
    background-color: #e9ecef;
    border-color: #adb5bd;
    transform: translateY(-1px);
}

.numpad-btn:active {
    transform: translateY(0);
    background-color: #dee2e6;
}

.numpad-clear {
    background-color: #ffc107;
    color: #000;
}

.numpad-clear:hover {
    background-color: #e0a800;
}

.numpad-submit {
    background-color: #28a745;
    color: white;
}

.numpad-submit:hover {
    background-color: #218838;
}

.action-buttons {
    margin: 15px 0;
}

.action-buttons button {
    margin: 5px;
}

/* Mobile-specific adjustments */
@media (max-width: 480px) {
    .numpad-btn {
        width: 28px;
        height: 28px;
        font-size: 0.8em;
    }
    
    .numpad {
        max-width: 100px;
        padding: 4px;
        gap: 2px;
    }
    
    .numpad-row {
        gap: 2px;
    }
    
    #question {
        font-size: 1.8em;
    }
    
    .container {
        padding: 5px;
    }
    
    #answer {
        font-size: 1.3em;
        width: 150px;
    }
    
    .numpad-toggle-btn {
        width: 35px;
        height: 35px;
        font-size: 1em;
    }
    
    .answer-input-group {
        gap: 6px;
    }
    
    #drawing-controls {
        bottom: 5px;
        right: 5px;
        padding: 4px;
    }
    
    #drawing-controls button {
        font-size: 0.8em;
        padding: 2px 6px;
    }
    
    #color-picker {
        width: 25px;
        height: 20px;
    }
    
    #line-width {
        width: 50px;
    }
}

/* Legal Footer */
.legal-footer {
    margin-top: 40px;
    padding: 20px 0;
    text-align: center;
    border-top: 1px solid #ddd;
    background-color: #f8f9fa;
}

.footer-links {
    margin-bottom: 10px;
}

.footer-links a {
    margin: 0 15px;
    color: #4CAF50;
    text-decoration: none;
    font-weight: bold;
}

.footer-links a:hover {
    text-decoration: underline;
}

.footer-info {
    color: #666;
    font-size: 0.9em;
}

.footer-info p {
    margin: 0;
}

/* Age Verification Modal */
.age-verification-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.age-verification-modal:not(.hidden) {
    display: flex;
}

.age-verification-content {
    background-color: white;
    padding: 30px;
    border-radius: 15px;
    text-align: center;
    max-width: 500px;
    margin: 20px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.age-verification-content h2 {
    color: #4CAF50;
    margin-bottom: 20px;
}

.age-verification-content p {
    margin-bottom: 20px;
    line-height: 1.6;
}

.age-buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
}

.age-button {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 16px;
    font-weight: bold;
    transition: all 0.3s ease;
}

.age-button.under-16 {
    background-color: #ff9800;
    color: white;
}

.age-button.under-16:hover {
    background-color: #f57c00;
}

.age-button.over-16 {
    background-color: #4CAF50;
    color: white;
}

.age-button.over-16:hover {
    background-color: #45a049;
}

/* Data Storage Info Banner */
.consent-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: #333;
    color: white;
    padding: 15px;
    text-align: center;
    z-index: 999;
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.3);
}

.consent-banner p {
    margin: 0 0 10px 0;
    font-size: 14px;
}

.consent-banner button {
    background-color: #4CAF50;
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 4px;
    cursor: pointer;
    margin: 0 5px;
    font-size: 14px;
}

.consent-banner button:hover {
    background-color: #45a049;
}

.consent-banner a {
    color: #4CAF50;
    text-decoration: none;
}

.consent-banner a:hover {
    text-decoration: underline;
}

/* AdSense Container */
.ad-container {
    text-align: center;
    margin: 20px 0;
    padding: 10px;
    background-color: #f9f9f9;
    border-radius: 8px;
    border: 1px solid #ddd;
}

/* Hide AdSense during game */
#game:not(.hidden) ~ .content .ad-container {
    display: none;
}

body.game-active .ad-container {
    display: none;
}

body.game-active .legal-footer {
    display: none;
}

.ad-label {
    font-size: 12px;
    color: #666;
    margin-bottom: 5px;
}

/* Mobile responsive adjustments for legal elements */
@media (max-width: 768px) {
    .footer-links a {
        display: block;
        margin: 5px 0;
    }
    
    .age-verification-content {
        margin: 10px;
        padding: 20px;
    }
    
    .age-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .age-button {
        width: 200px;
    }
    
    .consent-banner {
        padding: 10px;
    }
}

/* API Key Section */
.api-key-section {
    margin-bottom: 15px;
}

.api-key-section label {
    display: flex;
    align-items: center;
    gap: 8px;
}

.help-icon {
    background: none;
    border: 1px solid #ccc;
    border-radius: 50%;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 12px;
    color: #666;
    transition: all 0.2s ease;
}

.help-icon:hover {
    background-color: #4CAF50;
    color: white;
    border-color: #4CAF50;
}

.api-links {
    margin-top: 8px;
}

.api-link {
    display: inline-block;
    padding: 6px 12px;
    background-color: #f0f8ff;
    color: #4CAF50;
    text-decoration: none;
    border-radius: 4px;
    font-size: 14px;
    border: 1px solid #4CAF50;
    transition: all 0.2s ease;
}

.api-link:hover {
    background-color: #4CAF50;
    color: white;
}

/* Help Modal Content */
.help-content {
    text-align: left;
    max-height: 70vh;
    overflow-y: auto;
    padding: 10px;
}

.help-content h3 {
    color: #4CAF50;
    margin-top: 20px;
    margin-bottom: 10px;
}

.help-content p {
    margin-bottom: 8px;
    line-height: 1.4;
}

.help-content a {
    color: #4CAF50;
    text-decoration: none;
}

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

.warning-box {
    background-color: #fff3cd;
    border: 1px solid #ffeaa7;
    border-radius: 4px;
    padding: 10px;
    margin: 15px 0;
}

.info-box {
    background-color: #d4edda;
    border: 1px solid #c3e6cb;
    border-radius: 4px;
    padding: 10px;
    margin: 15px 0;
}

/* Contact Protection Styles */
.protected-email {
    color: #666;
    font-style: italic;
}

.protected-address {
    color: #666;
    font-style: italic;
}

@media (max-width: 768px) {
    .help-content {
        max-height: 60vh;
    }
    
    .api-key-section label {
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
    }
}