/* ============================================
   Kid-Friendly Counting Webapp - Styles
   ============================================ */

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #4CAF50;
    --primary-dark: #45a049;
    --secondary-color: #2196F3;
    --secondary-dark: #0b7dda;
    --success-color: #FFD700;
    --error-color: #f44336;
    --background: #F5F5F5;
    --card-background: #FFFFFF;
    --text-primary: #212121;
    --text-secondary: #757575;
    --border-radius: 20px;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 6px 12px rgba(0, 0, 0, 0.15);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 25%, #f093fb 50%, #4facfe 75%, #00f2fe 100%);
    background-size: 400% 400%;
    animation: gradientShift 15s ease infinite;
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    position: relative;
    overflow-x: hidden;
    width: 100%;
    -webkit-text-size-adjust: 100%;
    -ms-text-size-adjust: 100%;
}

/* Animated gradient background */
@keyframes gradientShift {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

/* Subtle pattern overlay for texture */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 20%, rgba(255, 255, 255, 0.08) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

/* Ensure content is above background */
.screen {
    position: relative;
    z-index: 1;
}

/* Confetti Canvas */
#confettiCanvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1000;
    cursor: pointer;
}

#confettiCanvas.interactive {
    pointer-events: auto;
    cursor: pointer;
}

#confettiCanvas.interactive:hover {
    cursor: pointer;
}

/* Screen Management */
.screen {
    display: none;
    min-height: 100vh;
    padding: 15px;
    animation: fadeIn 0.3s ease-in;
    position: relative;
    z-index: 1;
    overflow-x: hidden;
}

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

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

.container {
    width: 100%;
    max-width: 1000px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
    padding: 0 10px;
}

/* Typography */
.title {
    font-size: clamp(2rem, 8vw, 3.5rem);
    text-align: center;
    margin-bottom: 30px;
    color: var(--primary-color);
    font-weight: bold;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}

.game-title {
    font-size: clamp(1.5rem, 5vw, 2rem);
    text-align: center;
    margin-bottom: 20px;
    color: var(--secondary-color);
    font-weight: bold;
}

.settings-title {
    font-size: clamp(1.5rem, 6vw, 2rem);
    margin-bottom: 20px;
    text-align: center;
    color: var(--text-primary);
}

/* Cards */
.settings-card,
.results-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: var(--border-radius);
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

/* Game Selection */
.game-selection-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 25px;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
}

.game-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: var(--border-radius);
    padding: 30px 20px;
    border: 4px solid var(--primary-color);
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
    text-align: center;
    min-height: 220px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    -webkit-tap-highlight-color: rgba(76, 175, 80, 0.2);
}

.game-card:hover {
    transform: translateY(-5px) scale(1.02);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.2);
    border-color: var(--primary-dark);
}

.game-card:active {
    transform: translateY(-2px) scale(1.01);
}

.game-card:focus {
    outline: none;
    box-shadow: 0 0 0 4px rgba(76, 175, 80, 0.3), 0 12px 40px rgba(0, 0, 0, 0.2);
}

.game-card-icon {
    font-size: clamp(3.5rem, 12vw, 5rem);
    margin-bottom: 8px;
}

.game-card-title {
    font-size: clamp(1.5rem, 4vw, 2rem);
    font-weight: bold;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.game-card-desc {
    font-size: clamp(1rem, 3vw, 1.2rem);
    color: var(--text-secondary);
    line-height: 1.5;
}

/* Settings */
.setting-group {
    margin-bottom: 25px;
}

.setting-label {
    display: block;
    font-size: clamp(1.1rem, 4vw, 1.3rem);
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.setting-select {
    width: 100%;
    padding: 18px 16px;
    font-size: clamp(1rem, 4vw, 1.2rem);
    border: 3px solid var(--primary-color);
    border-radius: 12px;
    background: white;
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.3s ease;
    min-height: 56px; /* Touch target size - Apple recommendation */
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    -webkit-tap-highlight-color: rgba(76, 175, 80, 0.2);
}

.setting-select:focus {
    outline: none;
    border-color: var(--primary-dark);
    box-shadow: 0 0 0 4px rgba(76, 175, 80, 0.2);
}

/* Toggle Switches */
.toggle-group {
    margin-bottom: 20px;
}

.toggle-label {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-size: clamp(1.1rem, 4vw, 1.3rem);
    gap: 15px;
}

.toggle-checkbox {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: relative;
    width: 60px;
    height: 34px;
    background-color: #ccc;
    border-radius: 34px;
    transition: background-color 0.3s ease;
    flex-shrink: 0;
}

.toggle-slider::before {
    content: "";
    position: absolute;
    height: 26px;
    width: 26px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    border-radius: 50%;
    transition: transform 0.3s ease;
}

.toggle-checkbox:checked + .toggle-slider {
    background-color: var(--primary-color);
}

.toggle-checkbox:checked + .toggle-slider::before {
    transform: translateX(26px);
}

.toggle-checkbox:focus + .toggle-slider {
    box-shadow: 0 0 0 4px rgba(76, 175, 80, 0.2);
}

.toggle-text {
    font-weight: 600;
}

/* Buttons */
.btn {
    border: none;
    border-radius: var(--border-radius);
    font-size: clamp(1.1rem, 4vw, 1.4rem);
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: inherit;
    text-align: center;
    display: inline-block;
    text-decoration: none;
    box-shadow: var(--shadow);
}

.btn:focus {
    outline: none;
    box-shadow: 0 0 0 4px rgba(76, 175, 80, 0.3), var(--shadow-hover);
}

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

.btn-primary {
    background: var(--primary-color);
    color: white;
    padding: 18px 30px;
    min-height: 56px; /* Touch target size */
    -webkit-tap-highlight-color: rgba(255, 255, 255, 0.3);
}

.btn-primary:hover {
    background: var(--primary-dark);
    box-shadow: var(--shadow-hover);
}

.btn-secondary {
    background: var(--secondary-color);
    color: white;
    padding: 14px 24px;
    min-height: 48px; /* Touch target size */
    font-size: clamp(0.9rem, 3vw, 1.1rem);
    -webkit-tap-highlight-color: rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
    background: var(--secondary-dark);
    box-shadow: var(--shadow-hover);
}

.btn-large {
    width: 100%;
    padding: 22px 20px;
    font-size: clamp(1.2rem, 5vw, 1.8rem);
    min-height: 64px; /* Large touch target for kids */
    -webkit-tap-highlight-color: rgba(255, 255, 255, 0.3);
}

.btn-small {
    padding: 10px 20px;
    font-size: clamp(0.9rem, 3vw, 1rem);
    min-height: 44px;
}

/* Screen Header (for home button on all screens) */
.screen-header {
    display: flex;
    justify-content: flex-start;
    align-items: center;
    margin-bottom: 20px;
    width: 100%;
}

/* Game Screen */
.game-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    flex-wrap: wrap;
    gap: 15px;
}

.progress-info {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 8px;
}

.score-displays {
    display: flex;
    gap: 15px;
    align-items: center;
}

.progress-text {
    font-size: clamp(1rem, 4vw, 1.2rem);
    font-weight: 600;
    color: var(--text-primary);
}

.stars-display,
.balloons-display {
    font-size: clamp(1.2rem, 5vw, 1.5rem);
    color: var(--success-color);
    font-weight: bold;
}

.balloons-display {
    color: #FF6B9D; /* Pink color for balloons */
}

.game-content {
    display: flex;
    flex-direction: column;
    gap: 25px;
    align-items: center;
}

/* Addition Game Styles */
.addition-groups {
    display: none; /* Hidden by default, shown when addition game is active */
    flex-direction: column;
    gap: 25px;
    width: 100%;
    max-width: 800px;
    padding: 20px 15px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: var(--border-radius);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.3);
    min-height: 200px;
    justify-content: center;
    align-items: center;
}

.addition-group {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

.addition-group-label {
    font-size: clamp(1.2rem, 4vw, 1.5rem);
    font-weight: bold;
    color: var(--secondary-color);
}

.addition-group-items {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(50px, 1fr));
    gap: 10px;
    width: 100%;
    justify-items: center;
}

.addition-group-emoji {
    font-size: clamp(2.5rem, 9vw, 6rem);
    animation: popIn 0.3s ease-out;
    user-select: none;
    -webkit-user-select: none;
    touch-action: none;
}

.addition-plus {
    font-size: clamp(2.5rem, 7vw, 5rem);
    color: var(--primary-color);
    font-weight: bold;
    margin: 8px 0;
}

.division-group-box {
    display: inline-block;
    padding: 8px 12px;
    margin: 4px;
    background: rgba(76, 175, 80, 0.2);
    border: 2px solid var(--primary-color);
    border-radius: 8px;
    font-size: clamp(1.2rem, 4vw, 1.8rem);
    font-weight: bold;
    color: var(--primary-color);
    min-width: 40px;
    text-align: center;
}

/* Comparison Game Styles */
.comparison-numbers {
    display: none; /* Hidden by default, shown when comparison game is active */
    flex-direction: row;
    gap: 40px;
    width: 100%;
    max-width: 800px;
    padding: 30px 20px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: var(--border-radius);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.3);
    min-height: 250px;
    justify-content: center;
    align-items: center;
}

.comparison-number-group {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    flex: 1;
}

.comparison-number-label {
    font-size: clamp(3rem, 10vw, 5rem);
    font-weight: bold;
    color: var(--primary-color);
    text-align: center;
}

.comparison-emoji-items {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(50px, 1fr));
    gap: 12px;
    width: 100%;
    justify-items: center;
    max-width: 300px;
}

.comparison-emoji {
    font-size: clamp(2.5rem, 8vw, 4rem);
    animation: popIn 0.3s ease-out;
    user-select: none;
    -webkit-user-select: none;
    touch-action: none;
}

.comparison-operator-btn {
    font-size: clamp(2.5rem, 8vw, 4.5rem) !important;
    min-height: 100px !important;
    padding: 30px 40px !important;
}

@media (max-width: 768px) {
    .comparison-numbers {
        flex-direction: column;
        gap: 25px;
    }
    
    .comparison-emoji-items {
        grid-template-columns: repeat(auto-fit, minmax(40px, 1fr));
        gap: 10px;
    }
}

@media (min-width: 768px) {
    .addition-groups {
        flex-direction: row;
        align-items: center;
        justify-content: center;
    }
    
    .addition-plus {
        margin: 0 20px;
    }
}

.pictures-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(70px, 1fr));
    gap: 15px;
    width: 100%;
    max-width: 800px;
    padding: 20px 15px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: var(--border-radius);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.3);
    min-height: 200px;
    justify-items: center;
    align-items: center;
}

.picture-emoji {
    font-size: clamp(3rem, 10vw, 7rem);
    animation: popIn 0.3s ease-out;
    user-select: none;
    -webkit-user-select: none;
    touch-action: none;
}

@keyframes popIn {
    0% {
        transform: scale(0);
        opacity: 0;
    }
    50% {
        transform: scale(1.2);
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

.hint-text {
    font-size: clamp(1rem, 4vw, 1.2rem);
    color: var(--text-secondary);
    text-align: center;
    min-height: 30px;
    padding: 10px;
}

.hint-text.error {
    color: var(--error-color);
    font-weight: 600;
}

.choices-container {
    display: flex;
    flex-direction: column;
    gap: 20px;
    width: 100%;
    max-width: 800px;
}

.choice-btn {
    width: 100%;
    padding: 24px 20px;
    font-size: clamp(1.8rem, 8vw, 3.5rem);
    font-weight: bold;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border: 4px solid var(--primary-color);
    border-radius: var(--border-radius);
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.3s ease;
    min-height: 80px; /* Large touch target */
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
    -webkit-tap-highlight-color: rgba(76, 175, 80, 0.2);
    touch-action: manipulation; /* Prevents double-tap zoom */
}

.choice-btn:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

.choice-btn:focus {
    outline: none;
    box-shadow: 0 0 0 4px rgba(76, 175, 80, 0.3), var(--shadow-hover);
}

.choice-btn:active {
    transform: scale(0.98);
}

.choice-btn.correct {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-dark);
    animation: correctPulse 0.6s ease-out;
}

.choice-btn.wrong {
    animation: shake 0.5s ease-in-out;
    border-color: var(--error-color);
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-10px); }
    20%, 40%, 60%, 80% { transform: translateX(10px); }
}

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

/* End Screen */
.results-card {
    text-align: center;
}

.result-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    margin-bottom: 15px;
    background: var(--background);
    border-radius: 12px;
    font-size: clamp(1.2rem, 5vw, 1.8rem);
}

.result-label {
    font-weight: 600;
    color: var(--text-secondary);
}

.result-value {
    font-weight: bold;
    color: var(--primary-color);
    font-size: clamp(1.5rem, 6vw, 2.2rem);
}

/* Success Overlay */
.success-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    animation: fadeIn 0.3s ease-in;
}

.success-overlay.show {
    display: flex;
}

.success-content {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(15px);
    padding: 40px 60px;
    border-radius: var(--border-radius);
    text-align: center;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    border: 2px solid rgba(255, 255, 255, 0.5);
    animation: popIn 0.3s ease-out;
}

/* Avatar Overlay (for 3 consecutive stars) */
.avatar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 3000; /* Higher than success overlay (2000) and confetti */
    pointer-events: none;
}

.avatar-overlay.show {
    display: flex;
    animation: fadeIn 0.3s ease-out;
}

.avatar-content {
    background: linear-gradient(135deg, #FF6B6B 0%, #FF8E53 100%);
    backdrop-filter: blur(15px);
    padding: 50px 70px;
    border-radius: var(--border-radius);
    text-align: center;
    box-shadow: 0 12px 40px rgba(255, 107, 107, 0.4);
    border: 3px solid rgba(255, 255, 255, 0.8);
    animation: popIn 0.4s ease-out, pulse 2s ease-in-out infinite;
    max-width: 90%;
}

.dinosaur-container {
    position: relative;
    display: inline-block;
    margin-bottom: 20px;
}

.dinosaur-body {
    font-size: clamp(4rem, 10vw, 8rem);
    animation: bounce 0.6s ease-out, rotate 2s ease-in-out infinite;
    display: block;
    position: relative;
    z-index: 1;
}

.dinosaur-mouth {
    position: absolute;
    bottom: 20%;
    left: 50%;
    transform: translateX(-50%);
    width: clamp(40px, 8vw, 60px);
    height: clamp(25px, 5vw, 35px);
    background: #FF4444;
    border-radius: 50% 50% 50% 50% / 70% 70% 30% 30%;
    opacity: 0;
    z-index: 2;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.dinosaur-mouth.talking {
    opacity: 1;
    animation: talk 0.25s ease-in-out infinite;
}

@keyframes talk {
    0%, 100% {
        transform: translateX(-50%) scaleY(0.4) scaleX(0.9);
        height: clamp(20px, 4vw, 28px);
        width: clamp(35px, 7vw, 55px);
    }
    50% {
        transform: translateX(-50%) scaleY(1.2) scaleX(1.1);
        height: clamp(30px, 6vw, 40px);
        width: clamp(50px, 10vw, 70px);
    }
}

.avatar-text {
    font-size: clamp(1.8rem, 5vw, 3rem);
    font-weight: bold;
    color: white;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    line-height: 1.3;
}

@keyframes rotate {
    0%, 100% {
        transform: rotate(0deg) scale(1);
    }
    25% {
        transform: rotate(-10deg) scale(1.1);
    }
    75% {
        transform: rotate(10deg) scale(1.1);
    }
}

@keyframes bounce {
    0% {
        transform: translateY(-50px) scale(0.5);
        opacity: 0;
    }
    50% {
        transform: translateY(10px) scale(1.1);
    }
    100% {
        transform: translateY(0) scale(1);
        opacity: 1;
    }
}

.success-emoji {
    font-size: 5rem;
    margin-bottom: 20px;
    animation: bounce 0.6s ease-in-out;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

.success-text {
    font-size: clamp(1.8rem, 6vw, 2.5rem);
    font-weight: bold;
    color: var(--primary-color);
}

/* Tablets and up (768px+) */
@media (min-width: 768px) {
    .screen {
        padding: 20px;
    }
    
    .pictures-container {
        grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
        gap: 20px;
        padding: 25px;
    }

    .picture-emoji {
        font-size: 5rem;
    }

    .choices-container {
        flex-direction: row;
        flex-wrap: wrap;
        gap: 18px;
    }

    .choice-btn {
        flex: 1 1 calc(50% - 9px);
        min-width: 200px;
        padding: 28px 24px;
    }
    
    .game-selection-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 35px;
    }
    
    .game-card {
        padding: 40px 30px;
        min-height: 260px;
    }
    
    .addition-groups {
        flex-direction: row;
        align-items: center;
        justify-content: center;
        gap: 30px;
        padding: 25px;
    }
    
    .addition-plus {
        margin: 0 15px;
    }
    
    .addition-group-emoji {
        font-size: 4.5rem;
    }
    
    .addition-group-items {
        grid-template-columns: repeat(auto-fit, minmax(60px, 1fr));
        gap: 12px;
    }
}

@media (min-width: 1200px) {
    .pictures-container {
        grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
        gap: 30px;
    }
    
    .picture-emoji {
        font-size: 7rem;
    }
    
    .addition-group-emoji {
        font-size: 6rem;
    }
}

/* Mobile-first responsive breakpoints */

/* Very small phones (320px and below) */
@media (max-width: 320px) {
    .screen {
        padding: 10px;
    }
    
    .container {
        padding: 0 5px;
    }
    
    .title {
        font-size: 1.8rem;
        margin-bottom: 20px;
    }
    
    .settings-card,
    .results-card {
        padding: 15px;
    }
    
    .game-card {
        padding: 20px 15px;
        min-height: 180px;
    }
    
    .btn-large {
        padding: 18px 15px;
        font-size: 1.1rem;
    }
    
    .choice-btn {
        padding: 20px 15px;
        font-size: 1.6rem;
        min-height: 70px;
    }
    
    .pictures-container {
        padding: 15px 10px;
        gap: 10px;
        grid-template-columns: repeat(auto-fit, minmax(60px, 1fr));
    }
    
    .picture-emoji {
        font-size: 2.5rem;
    }
}

/* Small phones (up to 480px) */
@media (max-width: 480px) {
    .screen {
        padding: 12px;
    }
    
    .container {
        padding: 0 8px;
    }

    .settings-card,
    .results-card {
        padding: 20px 15px;
    }
    
    .game-card {
        padding: 25px 18px;
        min-height: 200px;
    }

    .game-header {
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
    }

    .progress-info {
        align-items: center;
    }
    
    .pictures-container {
        padding: 18px 12px;
        gap: 12px;
    }
    
    .addition-groups {
        padding: 18px 12px;
        gap: 20px;
    }
    
    .addition-group-items {
        gap: 8px;
        grid-template-columns: repeat(auto-fit, minmax(45px, 1fr));
    }
}

/* Medium phones (481px to 767px) */
@media (min-width: 481px) and (max-width: 767px) {
    .screen {
        padding: 18px;
    }
    
    .game-selection-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .game-card {
        padding: 35px 25px;
        min-height: 240px;
    }
    
    .pictures-container {
        grid-template-columns: repeat(auto-fit, minmax(80px, 1fr));
        gap: 18px;
    }
    
    .addition-group-items {
        grid-template-columns: repeat(auto-fit, minmax(55px, 1fr));
        gap: 12px;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    :root {
        --primary-color: #006400;
        --background: #FFFFFF;
        --card-background: #FFFFFF;
        --text-primary: #000000;
    }

    .btn {
        border: 3px solid currentColor;
    }
}