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

:root {
    --bg-primary: #2b2b2b;
    --bg-secondary: #3a3a3a;
    --bg-tertiary: #4a4a4a;
    --border-primary: #8b4513;
    --border-secondary: #d2691e;
    --text-primary: #f0e68c;
    --text-secondary: #dda15e;
    --text-accent: #ffa07a;
    --shadow-color: #1a1a1a;
    --hover-bg: #4a4a4a;
    --success-bg: #2d5016;
    --success-border: #4a7c2e;
    --error-bg: #7c2d2d;
    --error-border: #a03e3e;
    
    /* Additional vibrant colors */
    --color-blue: #4a90e2;
    --color-purple: #9b59b6;
    --color-green: #2ecc71;
    --color-red: #e74c3c;
    --color-yellow: #f39c12;
    --color-pink: #e91e63;
    --color-cyan: #1abc9c;
    --color-orange: #ff6347;
    --color-lime: #cddc39;
    --color-indigo: #6c5ce7;
}

body.light-theme {
    --bg-primary: #f5f5f5;
    --bg-secondary: #ffffff;
    --bg-tertiary: #e8e8e8;
    --border-primary: #d2691e;
    --border-secondary: #8b4513;
    --text-primary: #2b2b2b;
    --text-secondary: #8b4513;
    --text-accent: #d2691e;
    --shadow-color: #cccccc;
    --hover-bg: #e0e0e0;
    --success-bg: #c8e6c9;
    --success-border: #4a7c2e;
    --error-bg: #ffcdd2;
    --error-border: #c62828;
}

body {
    font-family: 'VT323', monospace;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    font-size: 20px;
    letter-spacing: 1px;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    width: 100%;
}

header {
    text-align: center;
    margin-bottom: 40px;
    padding: 30px 0;
    border-bottom: 4px solid var(--border-secondary);
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    position: relative;
}

.theme-toggle {
    position: absolute;
    top: 20px;
    right: 20px;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    border: 3px solid var(--border-primary);
    padding: 8px 16px;
    font-family: 'VT323', monospace;
    font-size: 20px;
    cursor: pointer;
    box-shadow: 3px 3px 0px var(--shadow-color);
    transition: all 0.2s;
}

.theme-toggle:hover {
    background-color: var(--hover-bg);
    transform: translate(-1px, -1px);
    box-shadow: 4px 4px 0px var(--shadow-color);
}

.title {
    font-size: 72px;
    color: var(--text-accent);
    text-shadow: 4px 4px 0px var(--border-primary);
    margin-bottom: 10px;
    letter-spacing: 4px;
}

.subtitle {
    font-size: 28px;
    color: var(--text-secondary);
}

.game-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    padding: 20px 0;
    width: 100%;
}

.game-card {
    background-color: var(--bg-secondary);
    border: 4px solid var(--border-primary);
    padding: 30px;
    cursor: pointer;
    transition: all 0.2s;
    box-shadow: 8px 8px 0px var(--shadow-color);
}

.game-card:hover {
    background-color: var(--hover-bg);
    transform: translate(-2px, -2px);
    box-shadow: 10px 10px 0px var(--shadow-color);
    border-color: var(--text-accent);
}

.game-card h3 {
    font-size: 32px;
    color: var(--text-accent);
    margin-bottom: 10px;
}

.game-card p {
    font-size: 22px;
    color: var(--text-secondary);
}

.hidden {
    display: none !important;
}

#game-container {
    background-color: var(--bg-secondary);
    border: 4px solid var(--border-primary);
    padding: 40px;
    min-height: 500px;
    box-shadow: 8px 8px 0px var(--shadow-color);
    width: 100%;
}

.back-button {
    background-color: var(--border-primary);
    color: var(--text-primary);
    border: 4px solid var(--border-secondary);
    padding: 15px 30px;
    font-family: 'VT323', monospace;
    font-size: 28px;
    cursor: pointer;
    margin-top: 20px;
    box-shadow: 4px 4px 0px var(--shadow-color);
    transition: all 0.2s;
}

.back-button:hover {
    background-color: var(--border-secondary);
    transform: translate(-2px, -2px);
    box-shadow: 6px 6px 0px var(--shadow-color);
}

.back-button:active {
    transform: translate(0, 0);
    box-shadow: 2px 2px 0px var(--shadow-color);
}

.restart-button {
    background-color: var(--color-green);
    color: var(--text-primary);
    border: 4px solid var(--color-cyan);
    padding: 15px 30px;
    font-family: 'VT323', monospace;
    font-size: 28px;
    cursor: pointer;
    margin-top: 20px;
    margin-right: 10px;
    box-shadow: 4px 4px 0px var(--shadow-color);
    transition: all 0.2s;
}

.restart-button:hover {
    background-color: var(--color-cyan);
    transform: translate(-2px, -2px);
    box-shadow: 6px 6px 0px var(--shadow-color);
}

.restart-button:active {
    transform: translate(0, 0);
    box-shadow: 2px 2px 0px var(--shadow-color);
}

button {
    background-color: var(--border-primary);
    color: var(--text-primary);
    border: 4px solid var(--border-secondary);
    padding: 12px 24px;
    font-family: 'VT323', monospace;
    font-size: 24px;
    cursor: pointer;
    box-shadow: 4px 4px 0px var(--shadow-color);
    transition: all 0.2s;
    margin: 5px;
}

button:hover {
    background-color: var(--border-secondary);
    transform: translate(-1px, -1px);
    box-shadow: 5px 5px 0px var(--shadow-color);
}

button:active {
    transform: translate(0, 0);
    box-shadow: 2px 2px 0px var(--shadow-color);
}

button:disabled {
    background-color: #5a5a5a;
    border-color: #7a7a7a;
    cursor: not-allowed;
    opacity: 0.6;
}

input, select {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    border: 3px solid var(--border-primary);
    padding: 10px;
    font-family: 'VT323', monospace;
    font-size: 22px;
    margin: 5px;
}

input:focus, select:focus {
    outline: none;
    border-color: var(--text-accent);
}

.game-title {
    font-size: 48px;
    color: var(--text-accent);
    text-align: center;
    margin-bottom: 30px;
    text-shadow: 3px 3px 0px var(--border-primary);
}

.game-stats {
    background-color: var(--bg-primary);
    border: 3px solid var(--border-secondary);
    padding: 20px;
    margin: 20px 0;
    text-align: center;
}

.stat-item {
    display: inline-block;
    margin: 10px 20px;
    font-size: 24px;
}

.stat-label {
    color: var(--text-secondary);
}

.stat-value {
    color: var(--text-accent);
    font-size: 32px;
    font-weight: bold;
}

.settings-panel {
    background-color: var(--bg-primary);
    border: 3px solid var(--border-primary);
    padding: 20px;
    margin: 20px 0;
}

.settings-panel h4 {
    color: var(--text-accent);
    font-size: 32px;
    margin-bottom: 15px;
}

.setting-item {
    margin: 15px 0;
    display: flex;
    align-items: center;
    gap: 10px;
}

.setting-label {
    color: var(--text-secondary);
    font-size: 24px;
    min-width: 150px;
}

footer {
    margin-top: auto;
    padding: 20px 0;
    text-align: center;
}

.results {
    background-color: var(--bg-primary);
    border: 4px solid var(--text-accent);
    padding: 30px;
    margin: 20px 0;
    text-align: center;
}

.results h3 {
    color: var(--text-accent);
    font-size: 40px;
    margin-bottom: 20px;
}

.results .score {
    color: var(--text-primary);
    font-size: 64px;
    margin: 20px 0;
}

.test-area {
    background-color: var(--bg-primary);
    border: 3px solid var(--border-primary);
    padding: 40px;
    margin: 20px 0;
    min-height: 300px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
}

.click-area {
    width: 100%;
    height: 400px;
    background-color: var(--bg-secondary);
    border: 4px solid var(--border-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    color: var(--text-secondary);
    user-select: none;
    position: relative;
}

.circle-target {
    width: 80px;
    height: 80px;
    background-color: var(--text-accent);
    border-radius: 50%;
    border: 4px solid var(--border-secondary);
    position: absolute;
    cursor: pointer;
    transition: transform 0.1s;
}

.circle-target:hover {
    transform: scale(1.1);
}

.leaderboard {
    background-color: var(--bg-primary);
    border: 3px solid var(--border-primary);
    padding: 20px;
    margin: 20px 0;
}

.leaderboard h4 {
    color: var(--text-accent);
    font-size: 32px;
    margin-bottom: 15px;
    text-align: center;
}

.leaderboard-entry {
    padding: 10px;
    border-bottom: 2px solid var(--bg-tertiary);
    display: flex;
    justify-content: space-between;
}

.leaderboard-entry:last-child {
    border-bottom: none;
}

.rank {
    color: var(--text-secondary);
    font-size: 24px;
}

.score-display {
    color: var(--text-accent);
    font-size: 24px;
}

canvas {
    border: 4px solid var(--border-primary);
    background-color: var(--bg-primary);
    cursor: crosshair;
    max-width: 100%;
}

/* Responsive tweaks */
@media (max-width: 768px) {
    .title {
        font-size: 52px;
    }
    .subtitle {
        font-size: 22px;
    }
    .game-card {
        padding: 20px;
    }
    .game-title {
        font-size: 38px;
    }
    .stat-item {
        display: block;
        margin: 8px 0;
    }
    .settings-panel {
        padding: 15px;
    }
    .setting-item {
        flex-direction: column;
        align-items: flex-start;
    }
    .setting-label {
        min-width: auto;
    }
    .click-area, .test-area {
        min-height: 240px;
        height: auto;
    }
    .score-panel-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 6px;
    }
}

.grid-container {
    display: grid;
    gap: 5px;
    justify-content: center;
    margin: 20px auto;
}

.grid-cell {
    background-color: var(--bg-secondary);
    border: 3px solid var(--border-primary);
    cursor: pointer;
    transition: background-color 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: var(--text-primary);
}

.grid-cell:hover {
    background-color: var(--hover-bg);
}

.grid-cell.active {
    background-color: var(--text-accent);
    border-color: var(--border-secondary);
}

.grid-cell.shown {
    background-color: var(--text-secondary);
}

.code-editor {
    width: 100%;
    min-height: 200px;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    border: 3px solid var(--border-primary);
    padding: 15px;
    font-family: 'VT323', monospace;
    font-size: 20px;
    resize: vertical;
}

.question {
    background-color: var(--bg-primary);
    border: 3px solid var(--border-secondary);
    padding: 20px;
    margin: 15px 0;
    color: var(--text-primary);
    font-size: 24px;
}

.answer-options {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin: 20px 0;
}

.answer-option {
    background-color: var(--bg-secondary);
    border: 3px solid var(--border-primary);
    padding: 15px;
    cursor: pointer;
    transition: all 0.2s;
}

.answer-option:hover {
    background-color: var(--hover-bg);
    border-color: var(--text-accent);
}

.answer-option.correct {
    background-color: var(--success-bg);
    border-color: var(--success-border);
}

.answer-option.incorrect {
    background-color: var(--error-bg);
    border-color: var(--error-border);
}

.timer {
    font-size: 48px;
    color: var(--text-accent);
    text-align: center;
    margin: 20px 0;
}

.progress-bar {
    width: 100%;
    height: 30px;
    background-color: var(--bg-primary);
    border: 3px solid var(--border-primary);
    margin: 20px 0;
    position: relative;
}

.progress-fill {
    height: 100%;
    background-color: var(--text-accent);
    transition: width 0.3s;
}

.credits-footer {
    background-color: var(--bg-secondary);
    border-top: 4px solid var(--border-secondary);
    padding: 20px;
    text-align: center;
    margin-top: 40px;
    font-size: 24px;
    color: var(--text-secondary);
}

.credits-footer a {
    color: var(--text-accent);
    text-decoration: none;
    transition: all 0.2s;
    border-bottom: 2px solid transparent;
}

.credits-footer a:hover {
    color: var(--border-secondary);
    border-bottom: 2px solid var(--border-secondary);
}

.score-panel {
    background-color: var(--bg-secondary);
    border: 4px solid var(--border-primary);
    padding: 20px;
    margin-bottom: 30px;
    box-shadow: 8px 8px 0px var(--shadow-color);
}

.score-panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 28px;
    color: var(--text-accent);
    margin-bottom: 6px;
}

.score-panel-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
}

.score-active {
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.score-empty {
    color: var(--text-secondary);
    padding: 10px 0;
}

.score-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 10px;
}

.score-entry {
    background-color: var(--bg-primary);
    border: 3px solid var(--border-secondary);
    padding: 10px 12px;
    box-shadow: 4px 4px 0px var(--shadow-color);
}

.score-entry-title {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-accent);
    font-size: 22px;
    margin-bottom: 6px;
}

.score-entry-stats {
    color: var(--text-primary);
    font-size: 18px;
    line-height: 1.4;
}

.score-entry-time {
    color: var(--text-secondary);
    font-size: 16px;
}

.score-graph {
    margin-top: 14px;
    height: 160px;
    display: flex;
    align-items: flex-end;
    gap: 10px;
    padding: 10px;
    border: 3px dashed var(--border-secondary);
    position: relative;
}

.score-bar {
    flex: 1;
    min-width: 30px;
    background: linear-gradient(180deg, var(--color-cyan), var(--color-blue));
    border: 3px solid var(--border-primary);
    position: relative;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    box-shadow: 4px 4px 0px var(--shadow-color);
}

.score-bar.bonus {
    background: linear-gradient(180deg, var(--color-yellow), var(--color-orange));
}

.score-bar-value {
    position: absolute;
    top: -22px;
    color: var(--text-accent);
    font-size: 16px;
}

.score-bar-label {
    position: absolute;
    bottom: -24px;
    color: var(--text-secondary);
    font-size: 16px;
    width: 100%;
    text-align: center;
}

.score-empty-graph {
    color: var(--text-secondary);
}

.circle-target {
    position: absolute;
    border-radius: 50%;
    background: radial-gradient(var(--color-pink), var(--color-purple));
    border: 3px solid var(--border-secondary);
    box-shadow: 4px 4px 0px var(--shadow-color);
}

.circle-target.bonus {
    background: radial-gradient(var(--color-yellow), var(--color-orange));
    transform: scale(1.05);
}

/* Animations for enhanced interactivity */
@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes glow {
    0%, 100% { box-shadow: 0 0 5px var(--text-accent); }
    50% { box-shadow: 0 0 20px var(--text-accent); }
}

@keyframes rainbow {
    0% { border-color: var(--color-red); }
    14% { border-color: var(--color-orange); }
    28% { border-color: var(--color-yellow); }
    42% { border-color: var(--color-green); }
    57% { border-color: var(--color-cyan); }
    71% { border-color: var(--color-blue); }
    85% { border-color: var(--color-purple); }
    100% { border-color: var(--color-red); }
}

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

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

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

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

@keyframes scaleIn {
    from { transform: scale(0); }
    to { transform: scale(1); }
}

@keyframes clickRipple {
    0% { transform: translate(-50%, -50%) scale(0); opacity: 1; }
    100% { transform: translate(-50%, -50%) scale(4); opacity: 0; }
}

.click-ripple {
    position: absolute;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: 3px solid var(--text-accent);
    pointer-events: none;
    animation: clickRipple 1s ease-out forwards;
    z-index: 10;
}

.game-card {
    animation: slideIn 0.5s ease-out;
}

.circle-target {
    animation: pulse 1s infinite;
}

button:active {
    animation: pulse 0.3s;
}

/* Accessibility: Screen reader only content */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* Accessibility: Focus indicators */
*:focus-visible {
    outline: 3px solid var(--text-accent);
    outline-offset: 2px;
}

.game-card:focus-visible {
    outline: 4px solid var(--text-accent);
    outline-offset: 4px;
    transform: translate(-2px, -2px);
}

button:focus-visible {
    outline: 3px solid var(--text-accent);
    outline-offset: 2px;
}

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

    .confetti,
    .particle {
        display: none !important;
    }
}

/* Make game cards keyboard accessible */
.game-card {
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
}

.game-card:focus {
    outline: none;
}