/* ============================================
   GREEDY KINGDOM - Resource Management Game
   Medieval Fantasy Theme with Rich Aesthetics
   ============================================ */

:root {
    /* Core Colors - Deep Medieval Palette */
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-tertiary: #21262d;
    --bg-card: #1c2128;
    
    /* Accent Colors */
    --gold: #ffd700;
    --gold-dark: #b8860b;
    --gold-glow: rgba(255, 215, 0, 0.3);
    --iron: #708090;
    --iron-glow: rgba(112, 128, 144, 0.3);
    --wood: #8b4513;
    --wood-glow: rgba(139, 69, 19, 0.3);
    --food: #228b22;
    --food-glow: rgba(34, 139, 34, 0.3);
    
    /* UI Colors */
    --text-primary: #e6edf3;
    --text-secondary: #8b949e;
    --text-muted: #6e7681;
    --border-color: #30363d;
    --border-highlight: #484f58;
    
    /* Special Accents */
    --player-color: #58a6ff;
    --player-glow: rgba(88, 166, 255, 0.4);
    --ai-color: #f85149;
    --ai-glow: rgba(248, 81, 73, 0.4);
    --optimal-color: #3fb950;
    --greedy-color: #d29922;
    
    /* Gradients */
    --gradient-gold: linear-gradient(135deg, #ffd700 0%, #f4a460 100%);
    --gradient-panel: linear-gradient(180deg, #1c2128 0%, #161b22 100%);
    --gradient-header: linear-gradient(135deg, #1a1f25 0%, #0d1117 100%);
    
    /* Shadows */
    --shadow-soft: 0 4px 6px rgba(0, 0, 0, 0.3);
    --shadow-medium: 0 8px 16px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 20px rgba(255, 215, 0, 0.2);
    
    /* Typography */
    --font-display: 'Cinzel', serif;
    --font-body: 'Crimson Text', Georgia, serif;
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    
    /* Borders */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
}

/* ============================================
   BASE STYLES
   ============================================ */

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

body {
    font-family: var(--font-body);
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
    overflow-x: hidden;
}

/* Animated Background Pattern */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(ellipse at 20% 20%, rgba(255, 215, 0, 0.03) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(88, 166, 255, 0.03) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(248, 81, 73, 0.02) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
}

/* ============================================
   GAME CONTAINER
   ============================================ */

.game-container {
    position: relative;
    z-index: 1;
    max-width: 1600px;
    margin: 0 auto;
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

/* ============================================
   HEADER
   ============================================ */

.game-header {
    background: var(--gradient-header);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--space-lg) var(--space-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow-medium);
    position: relative;
    overflow: hidden;
}

.game-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-gold);
}

.title-section {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.game-title {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--gradient-gold);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 30px var(--gold-glow);
    letter-spacing: 2px;
}

.subtitle {
    color: var(--text-secondary);
    font-style: italic;
    font-size: 1.1rem;
}

.turn-info {
    display: flex;
    flex-direction: column;
    align-items: center;
    background: var(--bg-tertiary);
    padding: var(--space-md) var(--space-xl);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
}

.turn-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 2px;
}

.turn-number {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    color: var(--gold);
    text-shadow: 0 0 10px var(--gold-glow);
}

/* ============================================
   MAIN GAME AREA
   ============================================ */

.game-main {
    display: grid;
    grid-template-columns: 280px 1fr 280px;
    gap: var(--space-lg);
    min-height: 600px;
}

/* ============================================
   PANELS (Player & AI)
   ============================================ */

.panel {
    background: var(--gradient-panel);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
    box-shadow: var(--shadow-soft);
}

.panel-header {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding-bottom: var(--space-md);
    border-bottom: 1px solid var(--border-color);
}

.player-avatar, .ai-avatar {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    border-radius: 50%;
    background: var(--bg-tertiary);
    border: 2px solid;
}

.player-avatar {
    border-color: var(--player-color);
    box-shadow: 0 0 15px var(--player-glow);
}

.ai-avatar {
    border-color: var(--ai-color);
    box-shadow: 0 0 15px var(--ai-glow);
}

.panel-header h2 {
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: 600;
    letter-spacing: 1px;
}

.player-panel .panel-header h2 {
    color: var(--player-color);
}

.ai-panel .panel-header h2 {
    color: var(--ai-color);
}

/* Resources Display */
.resources-display {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.resource-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    border-left: 3px solid transparent;
    transition: all 0.3s ease;
}

.resource-item:hover {
    transform: translateX(4px);
}

.resource-item.gold { border-left-color: var(--gold); }
.resource-item.iron { border-left-color: var(--iron); }
.resource-item.wood { border-left-color: var(--wood); }
.resource-item.food { border-left-color: var(--food); }

.resource-icon {
    font-size: 1.3rem;
    width: 30px;
    text-align: center;
}

.resource-name {
    flex: 1;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.resource-value {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 600;
    min-width: 40px;
    text-align: right;
}

.resource-item.gold .resource-value { color: var(--gold); }
.resource-item.iron .resource-value { color: var(--iron); }
.resource-item.wood .resource-value { color: var(--wood); }
.resource-item.food .resource-value { color: var(--food); }

/* Score Section */
.score-section {
    padding-top: var(--space-md);
    border-top: 1px solid var(--border-color);
}

.total-score {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-md);
    background: linear-gradient(135deg, rgba(88, 166, 255, 0.1) 0%, rgba(88, 166, 255, 0.05) 100%);
    border-radius: var(--radius-md);
    border: 1px solid rgba(88, 166, 255, 0.2);
}

.total-score.ai {
    background: linear-gradient(135deg, rgba(248, 81, 73, 0.1) 0%, rgba(248, 81, 73, 0.05) 100%);
    border-color: rgba(248, 81, 73, 0.2);
}

.total-score span:first-child {
    font-size: 0.9rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.score-value {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--player-color);
}

.total-score.ai .score-value {
    color: var(--ai-color);
}

/* Algorithm Toggle */
.algorithm-toggle, .ai-strategy {
    padding-top: var(--space-md);
    border-top: 1px solid var(--border-color);
}

.algorithm-toggle h3, .ai-strategy h3 {
    font-family: var(--font-display);
    font-size: 0.9rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--space-md);
}

.toggle-buttons, .strategy-buttons {
    display: flex;
    gap: var(--space-sm);
}

.toggle-btn, .strategy-btn {
    flex: 1;
    padding: var(--space-sm) var(--space-md);
    border: 1px solid var(--border-color);
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    font-family: var(--font-body);
    font-size: 0.9rem;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
}

.toggle-btn:hover, .strategy-btn:hover {
    border-color: var(--border-highlight);
    background: var(--bg-secondary);
}

.toggle-btn.active {
    border-color: var(--player-color);
    background: rgba(88, 166, 255, 0.15);
    color: var(--player-color);
}

.strategy-btn.active {
    border-color: var(--ai-color);
    background: rgba(248, 81, 73, 0.15);
    color: var(--ai-color);
}

.btn-icon {
    font-size: 1rem;
}

.mode-description, .strategy-description {
    margin-top: var(--space-sm);
    font-size: 0.85rem;
    color: var(--text-muted);
    font-style: italic;
    text-align: center;
}

/* ============================================
   GAME BOARD SECTION
   ============================================ */

.game-board-section {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.canvas-container {
    position: relative;
    flex: 1;
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: 
        var(--shadow-medium),
        inset 0 0 50px rgba(0, 0, 0, 0.3);
}

#gameCanvas {
    width: 100%;
    height: 100%;
    display: block;
}

.canvas-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(13, 17, 23, 0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.5s ease;
}

.canvas-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.overlay-content {
    text-align: center;
    animation: fadeIn 0.5s ease;
}

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

.overlay-content h2 {
    font-family: var(--font-display);
    font-size: 2.5rem;
    color: var(--gold);
    margin-bottom: var(--space-md);
    text-shadow: 0 0 30px var(--gold-glow);
}

.overlay-content p {
    color: var(--text-secondary);
    font-size: 1.2rem;
    margin-bottom: var(--space-xl);
}

.start-btn {
    font-family: var(--font-display);
    font-size: 1.2rem;
    padding: var(--space-md) var(--space-xl);
    background: var(--gradient-gold);
    color: var(--bg-primary);
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px var(--gold-glow);
}

.start-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--gold-glow);
}

/* Game Controls */
.game-controls {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
}

.control-btn {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    background: linear-gradient(135deg, var(--player-color) 0%, #4090e0 100%);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-body);
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 10px rgba(88, 166, 255, 0.3);
}

.control-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(88, 166, 255, 0.4);
}

.control-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.control-btn.secondary {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    box-shadow: var(--shadow-soft);
}

.control-btn.secondary:hover:not(:disabled) {
    border-color: var(--border-highlight);
    color: var(--text-primary);
    box-shadow: var(--shadow-medium);
}

.control-btn kbd {
    padding: var(--space-xs) var(--space-sm);
    background: rgba(0, 0, 0, 0.3);
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-family: monospace;
}

/* ============================================
   COMPARISON PANEL
   ============================================ */

.comparison-panel {
    background: var(--gradient-panel);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--space-lg);
    box-shadow: var(--shadow-soft);
}

.comparison-title {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-md);
    border-bottom: 1px solid var(--border-color);
}

.comparison-title .icon {
    font-size: 1.4rem;
}

.comparison-grid {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: var(--space-lg);
}

.comparison-card {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    transition: all 0.3s ease;
}

.comparison-card:hover {
    border-color: var(--border-highlight);
    transform: translateY(-2px);
}

.greedy-card {
    border-left: 3px solid var(--greedy-color);
}

.optimal-card {
    border-left: 3px solid var(--optimal-color);
}

.difference-card {
    border-left: 3px solid var(--player-color);
}

.comparison-card h3 {
    font-family: var(--font-display);
    font-size: 1rem;
    margin-bottom: var(--space-md);
    color: var(--text-primary);
}

.greedy-card h3 { color: var(--greedy-color); }
.optimal-card h3 { color: var(--optimal-color); }

.metrics {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.metric {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-xs) 0;
}

.metric-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.metric-value {
    font-family: var(--font-display);
    font-weight: 600;
    color: var(--text-primary);
}

.path-preview {
    margin-top: var(--space-md);
    height: 80px;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.path-preview canvas {
    width: 100%;
    height: 100%;
}

.difference-display {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.diff-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.diff-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.diff-value {
    font-family: var(--font-display);
    font-weight: 600;
    color: var(--ai-color);
}

.diff-value.positive {
    color: var(--optimal-color);
}

.verdict {
    margin-top: var(--space-lg);
    padding: var(--space-md);
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    text-align: center;
    color: var(--text-secondary);
    font-style: italic;
    border: 1px dashed var(--border-color);
}

/* ============================================
   DECISION LOG
   ============================================ */

.decision-log {
    background: var(--gradient-panel);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--space-lg);
    box-shadow: var(--shadow-soft);
}

.log-title {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-md);
    border-bottom: 1px solid var(--border-color);
}

.log-container {
    max-height: 200px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    padding-right: var(--space-sm);
}

.log-container::-webkit-scrollbar {
    width: 6px;
}

.log-container::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
    border-radius: 3px;
}

.log-container::-webkit-scrollbar-thumb {
    background: var(--border-highlight);
    border-radius: 3px;
}

.log-entry {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    border-left: 3px solid var(--border-color);
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from { 
        opacity: 0; 
        transform: translateX(-10px); 
    }
    to { 
        opacity: 1; 
        transform: translateX(0); 
    }
}

.log-entry.player { border-left-color: var(--player-color); }
.log-entry.ai { border-left-color: var(--ai-color); }
.log-entry.greedy { border-left-color: var(--greedy-color); }
.log-entry.optimal { border-left-color: var(--optimal-color); }
.log-entry.system { border-left-color: var(--gold); }
.log-entry.welcome { border-left-color: var(--gold); }

.log-icon {
    font-size: 1rem;
    flex-shrink: 0;
}

.log-text {
    color: var(--text-secondary);
    line-height: 1.4;
}

.log-text strong {
    color: var(--text-primary);
}

/* ============================================
   FOOTER
   ============================================ */

.game-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-md) var(--space-lg);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
}

.legend {
    display: flex;
    gap: var(--space-lg);
}

.legend-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.color-box {
    width: 16px;
    height: 16px;
    border-radius: var(--radius-sm);
}

.color-box.gold { background: var(--gold); }
.color-box.iron { background: var(--iron); }
.color-box.wood { background: var(--wood); }
.color-box.food { background: var(--food); }

.controls-hint {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.controls-hint kbd {
    padding: 2px 6px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-family: monospace;
    font-size: 0.8rem;
}

/* ============================================
   ANIMATIONS
   ============================================ */

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

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

.resource-collected {
    animation: pulse 0.3s ease;
}

.score-updated {
    animation: glow 0.5s ease;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 1200px) {
    .game-main {
        grid-template-columns: 250px 1fr 250px;
    }
    
    .comparison-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .difference-card {
        grid-column: span 2;
    }
}

@media (max-width: 992px) {
    .game-main {
        grid-template-columns: 1fr;
        grid-template-rows: auto auto auto;
    }
    
    .player-panel, .ai-panel {
        flex-direction: row;
        flex-wrap: wrap;
    }
    
    .panel-header {
        width: 100%;
    }
    
    .resources-display {
        flex-direction: row;
        flex-wrap: wrap;
        flex: 1;
    }
    
    .resource-item {
        flex: 1;
        min-width: 120px;
    }
    
    .comparison-grid {
        grid-template-columns: 1fr;
    }
    
    .difference-card {
        grid-column: span 1;
    }
}

@media (max-width: 768px) {
    .game-container {
        padding: var(--space-md);
    }
    
    .game-title {
        font-size: 1.8rem;
    }
    
    .game-header {
        flex-direction: column;
        gap: var(--space-md);
        text-align: center;
    }
    
    .game-controls {
        flex-wrap: wrap;
    }
    
    .control-btn {
        flex: 1;
        min-width: 120px;
    }
    
    .legend {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .game-footer {
        flex-direction: column;
        gap: var(--space-md);
    }
}