/* Swiss Typography & Minimalist Design */
@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
    --primary-color: #000000;
    --secondary-color: #666666;
    --accent-color: #ffffff;
    --background-color: #ffffff;
    --border-color: #e0e0e0;
    --success-color: #00aa00;
    --error-color: #aa0000;
    --hover-color: #f5f5f5;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

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

body {
    font-family: 'JetBrains Mono', 'Courier New', monospace;
    background-color: var(--background-color);
    color: var(--primary-color);
    line-height: 1.6;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

header {
    text-align: center;
    margin-bottom: 3rem;
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 1.5rem;
}

h1 {
    font-size: 2.5rem;
    font-weight: 600;
    letter-spacing: 0.2em;
    margin-bottom: 1rem;
    text-transform: uppercase;
}

.score-display {
    display: flex;
    justify-content: space-between;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--secondary-color);
}

main {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.game-screen {
    text-align: center;
}

.image-container {
    margin-bottom: 3rem;
}

.image-container img {
    width: 100%;
    max-width: 500px;
    height: auto;
    display: block;
    margin: 0 auto;
}

.options-container {
    margin-bottom: 2rem;
}

/* Reserve space for feedback area to prevent layout shift */
.feedback-reserved-space {
    min-height: 120px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.options-list {
    display: grid;
    gap: 1rem;
    max-width: 400px;
    margin: 0 auto;
}

.option-btn {
    background-color: var(--accent-color);
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    padding: 1.5rem 2rem;
    font-family: inherit;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    min-height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

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

.option-btn.selected {
    background-color: #ffd700;
    color: var(--primary-color);
    border-color: #ffd700;
}

.option-btn.correct {
    background-color: var(--success-color);
    color: var(--accent-color);
    border-color: var(--success-color);
}

.option-btn.incorrect {
    background-color: var(--error-color);
    color: var(--accent-color);
    border-color: var(--error-color);
}

.feedback-container {
    margin-top: 0;
    padding: 0;
}

.feedback-message {
    display: none;
}

.feedback-message.correct {
    color: var(--success-color);
}

.feedback-message.incorrect {
    color: var(--error-color);
}

.btn {
    background-color: var(--primary-color);
    color: var(--accent-color);
    border: 2px solid var(--primary-color);
    padding: 1.5rem 2rem;
    font-family: inherit;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    min-width: 150px;
    min-height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn:disabled {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
    color: var(--accent-color);
    cursor: not-allowed;
    opacity: 0.6;
}

.btn:hover:not(:disabled) {
    background-color: var(--accent-color);
    color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

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

.btn-primary {
    background-color: var(--primary-color);
    color: var(--accent-color);
}

.final-screen {
    text-align: center;
    padding: 3rem 2rem;
    border: 2px solid var(--primary-color);
    border-radius: 8px;
    background-color: var(--accent-color);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.final-screen h2 {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 2rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.final-score {
    margin-bottom: 2rem;
}

.final-score p {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

#score-message {
    font-size: 1rem;
    color: var(--secondary-color);
    font-style: italic;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    .score-display {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .options-list {
        max-width: 100%;
    }
    
    .option-btn {
        padding: 0.8rem 1.5rem;
        font-size: 0.9rem;
    }
    
    .image-container {
        margin-bottom: 2rem;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 1.5rem;
    }
    
    .option-btn {
        padding: 0.7rem 1rem;
        font-size: 0.8rem;
    }
    
    .btn {
        padding: 0.8rem 1.5rem;
        font-size: 0.9rem;
        min-width: 120px;
    }
}

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

.option-btn:focus,
.btn:focus {
    outline: 3px solid var(--secondary-color);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --border-color: #000000;
        --secondary-color: #000000;
    }
}