/* CSS Variables for Terminal Theme */
:root {
    --terminal-bg: #0a0a0a;
    --terminal-green: #00ff00;
    --terminal-amber: #ffb000;
    --terminal-red: #ff0040;
    --terminal-blue: #0080ff;
    --terminal-purple: #8000ff;
    --terminal-cyan: #00ffff;
    --terminal-white: #ffffff;
    --terminal-gray: #808080;
    --terminal-dark-gray: #404040;
    
    --font-mono: 'Courier New', 'Monaco', 'Consolas', monospace;
    --font-size-base: 14px;
    --font-size-large: 18px;
    --font-size-small: 12px;
}

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

body {
    font-family: var(--font-mono);
    background: var(--terminal-bg);
    color: var(--terminal-green);
    font-size: var(--font-size-base);
    line-height: 1.4;
    overflow-x: hidden;
}

/* CRT Screen Effect */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(transparent 50%, rgba(0, 255, 0, 0.03) 50%);
    background-size: 100% 4px;
    pointer-events: none;
    z-index: 1000;
}

/* Game Container */
.game-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    min-height: 100vh;
}

/* Header Styles */
.game-header {
    border: 2px solid var(--terminal-green);
    padding: 15px;
    margin-bottom: 20px;
    background: rgba(0, 255, 0, 0.05);
    box-shadow: 0 0 20px rgba(0, 255, 0, 0.3);
}

.game-title {
    font-size: 24px;
    color: var(--terminal-amber);
    text-align: center;
    margin-bottom: 10px;
    text-shadow: 0 0 10px var(--terminal-amber);
}

.game-info {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    gap: 20px;
}

.info-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
}

.info-label {
    color: var(--terminal-gray);
    font-size: var(--font-size-small);
}

.info-item span:last-child {
    color: var(--terminal-cyan);
    font-weight: bold;
    font-size: var(--font-size-large);
}

/* Main Game Area */
.game-main {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 20px;
    margin-bottom: 20px;
}

/* Dig Site Section */
.dig-site-section {
    border: 2px solid var(--terminal-blue);
    padding: 20px;
    background: rgba(0, 128, 255, 0.05);
}

.section-title {
    color: var(--terminal-blue);
    margin-bottom: 15px;
    text-align: center;
    text-shadow: 0 0 10px var(--terminal-blue);
}

.dig-site-container {
    display: flex;
    justify-content: center;
    margin-bottom: 15px;
}

.dig-site-grid {
    display: grid;
    grid-template-columns: repeat(4, 80px);
    grid-template-rows: repeat(3, 80px);
    gap: 5px;
    border: 2px solid var(--terminal-green);
    padding: 10px;
    background: rgba(0, 255, 0, 0.05);
}

/* Digging Animation */
.dig-cell {
    border: 1px solid var(--terminal-green);
    background: var(--terminal-dark-gray);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.dig-cell:hover {
    background: rgba(0, 255, 0, 0.2);
    box-shadow: 0 0 10px rgba(0, 255, 0, 0.5);
}

.dig-cell.excavated {
    background: var(--terminal-bg);
    border-color: var(--terminal-amber);
    color: var(--terminal-amber);
}

.dig-cell.excavated:hover {
    background: rgba(255, 176, 0, 0.1);
}

/* Digging Animation Effects */
@keyframes digEffect {
    0% {
        transform: scale(1);
        opacity: 1;
        background: var(--terminal-dark-gray);
    }
    50% {
        transform: scale(0.8);
        opacity: 0.5;
        background: rgba(0, 255, 0, 0.3);
    }
    100% {
        transform: scale(1);
        opacity: 1;
        background: var(--terminal-bg);
    }
}

@keyframes dustClear {
    0% {
        background: var(--terminal-dark-gray);
        box-shadow: inset 0 0 20px rgba(0, 0, 0, 0.5);
    }
    100% {
        background: var(--terminal-bg);
        box-shadow: inset 0 0 0px rgba(0, 0, 0, 0);
    }
}

.dig-cell.digging {
    animation: digEffect 0.6s ease-in-out;
}

.dig-cell.dust-clearing {
    animation: dustClear 0.8s ease-out;
}

.dig-instructions {
    text-align: center;
    color: var(--terminal-gray);
    font-style: italic;
}

/* Info Panel */
.info-panel {
    border: 2px solid var(--terminal-purple);
    padding: 20px;
    background: rgba(128, 0, 255, 0.05);
}

.info-panel h3 {
    color: var(--terminal-purple);
    margin-bottom: 15px;
    text-shadow: 0 0 10px var(--terminal-purple);
}

.era-info {
    margin-bottom: 20px;
}

#era-description {
    color: var(--terminal-white);
    font-size: var(--font-size-small);
    line-height: 1.5;
}

/* Progress Section */
.progress-section {
    margin-bottom: 20px;
}

.progress-bar {
    width: 100%;
    height: 20px;
    border: 1px solid var(--terminal-green);
    background: var(--terminal-dark-gray);
    margin-bottom: 10px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--terminal-green), var(--terminal-cyan));
    width: 0%;
    transition: width 0.5s ease;
    box-shadow: 0 0 10px rgba(0, 255, 0, 0.5);
}

#progress-text {
    color: var(--terminal-gray);
    font-size: var(--font-size-small);
    text-align: center;
}

/* Era Navigation */
.era-buttons {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.era-btn {
    padding: 10px 15px;
    border: 1px solid var(--terminal-green);
    background: var(--terminal-dark-gray);
    color: var(--terminal-green);
    font-family: var(--font-mono);
    cursor: pointer;
    transition: all 0.3s ease;
}

.era-btn:hover {
    background: rgba(0, 255, 0, 0.2);
    box-shadow: 0 0 10px rgba(0, 255, 0, 0.5);
}

.era-btn.active {
    background: var(--terminal-green);
    color: var(--terminal-bg);
    box-shadow: 0 0 15px rgba(0, 255, 0, 0.7);
}

.era-btn.locked {
    color: var(--terminal-gray);
    border-color: var(--terminal-gray);
    cursor: not-allowed;
}

.era-btn.locked:hover {
    background: var(--terminal-dark-gray);
    box-shadow: none;
}

/* Modal Styles */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
}

.modal.hidden {
    display: none;
}

.modal-content {
    background: var(--terminal-bg);
    border: 2px solid var(--terminal-amber);
    padding: 20px;
    max-width: 600px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: 0 0 30px rgba(255, 176, 0, 0.5);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--terminal-amber);
    padding-bottom: 10px;
}

.modal-header h3 {
    color: var(--terminal-amber);
    text-shadow: 0 0 10px var(--terminal-amber);
}

.close-btn {
    background: none;
    border: 1px solid var(--terminal-red);
    color: var(--terminal-red);
    font-size: 20px;
    width: 30px;
    height: 30px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.close-btn:hover {
    background: rgba(255, 0, 64, 0.2);
    box-shadow: 0 0 10px rgba(255, 0, 64, 0.5);
}

/* Code Display */
.code-display {
    background: var(--terminal-dark-gray);
    border: 1px solid var(--terminal-green);
    padding: 15px;
    margin-bottom: 20px;
    overflow-x: auto;
}

.code-display pre {
    color: var(--terminal-cyan);
    font-family: var(--font-mono);
    white-space: pre-wrap;
    word-wrap: break-word;
}

/* Question Section */
.question-section h4 {
    color: var(--terminal-white);
    margin-bottom: 15px;
    line-height: 1.5;
}

.options-container {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.option-btn {
    padding: 10px 15px;
    border: 1px solid var(--terminal-blue);
    background: var(--terminal-dark-gray);
    color: var(--terminal-blue);
    font-family: var(--font-mono);
    cursor: pointer;
    text-align: left;
    transition: all 0.3s ease;
}

.option-btn:hover {
    background: rgba(0, 128, 255, 0.2);
    box-shadow: 0 0 10px rgba(0, 128, 255, 0.5);
}

.option-btn.selected {
    background: var(--terminal-blue);
    color: var(--terminal-bg);
}

/* Feedback Section */
.feedback {
    margin-top: 20px;
    padding: 15px;
    border: 1px solid var(--terminal-green);
    background: rgba(0, 255, 0, 0.05);
}

.feedback.hidden {
    display: none;
}

#feedback-text {
    color: var(--terminal-white);
    margin-bottom: 10px;
    font-weight: bold;
}

#explanation-text {
    color: var(--terminal-gray);
    margin-bottom: 15px;
    line-height: 1.5;
}

.continue-btn {
    padding: 10px 20px;
    border: 1px solid var(--terminal-green);
    background: var(--terminal-green);
    color: var(--terminal-bg);
    font-family: var(--font-mono);
    cursor: pointer;
    font-weight: bold;
}

.continue-btn:hover {
    background: var(--terminal-cyan);
    box-shadow: 0 0 15px rgba(0, 255, 255, 0.5);
}

/* Action Buttons */
.action-buttons {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 20px;
}

.action-btn {
    padding: 10px 20px;
    border: 1px solid var(--terminal-purple);
    background: var(--terminal-dark-gray);
    color: var(--terminal-purple);
    font-family: var(--font-mono);
    cursor: pointer;
    transition: all 0.3s ease;
}

.action-btn:hover {
    background: rgba(128, 0, 255, 0.2);
    box-shadow: 0 0 10px rgba(128, 0, 255, 0.5);
}

/* Museum Content */
.museum-content {
    max-width: 800px;
}

.museum-section {
    padding: 20px;
}

.museum-header {
    text-align: center;
    margin-bottom: 30px;
    border-bottom: 2px solid var(--terminal-amber);
    padding-bottom: 20px;
}

.museum-stats {
    display: flex;
    justify-content: space-around;
    margin-top: 15px;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
}

.stat-label {
    color: var(--terminal-gray);
    font-size: var(--font-size-small);
}

.stat-value {
    color: var(--terminal-cyan);
    font-size: var(--font-size-large);
    font-weight: bold;
}

.era-section {
    margin-bottom: 30px;
    padding: 20px;
    border: 2px solid var(--terminal-blue);
    background: rgba(0, 128, 255, 0.05);
}

.era-section.locked {
    border-color: var(--terminal-gray);
    background: rgba(128, 128, 128, 0.05);
    opacity: 0.6;
}

.era-section.current {
    border-color: var(--terminal-green);
    background: rgba(0, 255, 0, 0.05);
}

.era-title {
    color: var(--terminal-blue);
    margin-bottom: 10px;
    font-size: var(--font-size-large);
}

.era-section.locked .era-title {
    color: var(--terminal-gray);
}

.era-section.current .era-title {
    color: var(--terminal-green);
}

.era-description {
    color: var(--terminal-white);
    margin-bottom: 15px;
    line-height: 1.5;
}

.fragments-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 15px;
    margin-top: 15px;
}

.fragment-card {
    background: var(--terminal-dark-gray);
    border: 1px solid var(--terminal-green);
    padding: 15px;
    border-radius: 5px;
}

.fragment-title {
    color: var(--terminal-amber);
    font-weight: bold;
    margin-bottom: 10px;
    font-size: var(--font-size-small);
}

.fragment-code {
    background: var(--terminal-bg);
    border: 1px solid var(--terminal-cyan);
    padding: 10px;
    margin-bottom: 10px;
    border-radius: 3px;
}

.fragment-code pre {
    color: var(--terminal-cyan);
    font-family: var(--font-mono);
    font-size: 11px;
    margin: 0;
    white-space: pre-wrap;
    word-wrap: break-word;
}

.fragment-description {
    color: var(--terminal-gray);
    font-size: var(--font-size-small);
    line-height: 1.4;
}

.fragment-actions {
    margin-top: 10px;
}

.compare-btn {
    background: var(--terminal-purple);
    color: var(--terminal-bg);
    border: none;
    padding: 6px 12px;
    font-family: var(--font-mono);
    font-size: var(--font-size-small);
    cursor: pointer;
    border-radius: 3px;
    transition: all 0.3s ease;
}

.compare-btn:hover {
    background: var(--terminal-cyan);
    box-shadow: 0 0 10px rgba(0, 255, 255, 0.5);
}

.comparison-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.comparison-item {
    background: var(--terminal-dark-gray);
    border: 1px solid var(--terminal-blue);
    padding: 15px;
    border-radius: 5px;
}

.comparison-header {
    margin-bottom: 10px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--terminal-gray);
}

.comparison-code {
    background: var(--terminal-bg);
    border: 1px solid var(--terminal-green);
    padding: 10px;
    border-radius: 3px;
    margin-bottom: 10px;
}

/* Timeline Styles */
.timeline-section {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--terminal-gray);
}

.timeline {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 15px;
}

.timeline-item {
    display: flex;
    align-items: center;
    padding: 10px;
    border-radius: 5px;
    transition: all 0.3s ease;
}

.timeline-item.unlocked {
    background: rgba(0, 255, 0, 0.1);
    border: 1px solid var(--terminal-green);
}

.timeline-item.locked {
    background: rgba(128, 128, 128, 0.1);
    border: 1px solid var(--terminal-gray);
    opacity: 0.6;
}

.timeline-item.current {
    background: rgba(0, 255, 255, 0.1);
    border: 1px solid var(--terminal-cyan);
    box-shadow: 0 0 10px rgba(0, 255, 255, 0.3);
}

.timeline-year {
    background: var(--terminal-dark-gray);
    color: var(--terminal-amber);
    padding: 8px 12px;
    border-radius: 3px;
    font-weight: bold;
    font-size: var(--font-size-small);
    min-width: 60px;
    text-align: center;
    margin-right: 15px;
}

.timeline-content {
    flex: 1;
}

.timeline-name {
    color: var(--terminal-white);
    font-weight: bold;
    font-size: var(--font-size-base);
    margin-bottom: 3px;
}

.timeline-description {
    color: var(--terminal-gray);
    font-size: var(--font-size-small);
    margin-bottom: 3px;
}

.timeline-status {
    color: var(--terminal-green);
    font-size: var(--font-size-small);
    font-weight: bold;
}

.timeline-item.locked .timeline-status {
    color: var(--terminal-gray);
}

.timeline-connector {
    height: 20px;
    width: 2px;
    background: var(--terminal-gray);
    margin-left: 30px;
    opacity: 0.5;
}

/* Responsive Design */
@media (max-width: 768px) {
    .game-main {
        grid-template-columns: 1fr;
    }
    
    .game-info {
        flex-direction: column;
        gap: 10px;
    }
    
    .dig-site-grid {
        grid-template-columns: repeat(3, 60px);
        grid-template-rows: repeat(4, 60px);
    }
    
    .action-buttons {
        flex-direction: column;
        align-items: center;
    }
}

/* Animations */
@keyframes glow {
    0%, 100% { box-shadow: 0 0 5px rgba(0, 255, 0, 0.5); }
    50% { box-shadow: 0 0 20px rgba(0, 255, 0, 0.8); }
}

@keyframes fadeInOut {
    0% { opacity: 0; transform: translate(-50%, -50%) scale(0.8); }
    20% { opacity: 1; transform: translate(-50%, -50%) scale(1); }
    80% { opacity: 1; transform: translate(-50%, -50%) scale(1); }
    100% { opacity: 0; transform: translate(-50%, -50%) scale(0.8); }
}

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

@keyframes slideOut {
    0% { transform: translateX(0); opacity: 1; }
    100% { transform: translateX(100%); opacity: 0; }
}

.dig-cell.excavated {
    animation: glow 2s infinite;
}

/* Syntax Highlighting Classes */
.keyword { color: var(--terminal-purple); }
.string { color: var(--terminal-amber); }
.comment { color: var(--terminal-gray); }
.number { color: var(--terminal-cyan); }
.function { color: var(--terminal-blue); }

/* Bomb Cell Styles */
.dig-cell.bomb {
    background: var(--terminal-red) !important;
    animation: explosion 0.5s ease-out;
    box-shadow: 0 0 20px rgba(255, 0, 0, 0.8);
}

@keyframes explosion {
    0% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.2);
        opacity: 0.8;
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}