/* Modern City Builder Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-gradient: linear-gradient(135deg, #1f2937 0%, #111827 100%);
    --secondary-gradient: linear-gradient(135deg, #7f1d1d 0%, #991b1b 100%);
    --accent-gradient: linear-gradient(135deg, #064e3b 0%, #065f46 100%);
    --city-gradient: linear-gradient(135deg, #0f766e 0%, #0d9488 100%);
    --success-gradient: linear-gradient(135deg, #059669 0%, #047857 100%);
    --danger-gradient: linear-gradient(135deg, #dc2626 0%, #b91c1c 100%);
    --dark-bg: #000000;
    --card-bg: rgba(10, 10, 10, 0.95);
    --card-border: rgba(255, 255, 255, 0.08);
    --text-primary: #e5e5e5;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-muted: rgba(255, 255, 255, 0.5);
    --success-color: #22c55e;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --info-color: #3b82f6;
    --shadow-light: 0 4px 16px rgba(0, 0, 0, 0.5);
    --shadow-heavy: 0 8px 24px rgba(0, 0, 0, 0.7);
    --border-radius: 6px;
    --transition: all 0.2s ease;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--dark-bg);
    color: var(--text-primary);
    overflow: hidden;
    height: 100vh;
}

/* Dark City Background */
.city-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: radial-gradient(circle at 70% 30%, #1a1a1a 0%, #000000 50%, #0a0a0a 100%);
}

/* Game Container */
#gameContainer {
    width: 100vw;
    height: 100vh;
    position: relative;
}

.screen {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: none;
    align-items: center;
    justify-content: center;
}

.screen.active {
    display: flex;
}

/* Main Menu Styles */
#mainMenu {
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(20px);
}

.menu-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center, rgba(15, 118, 110, 0.1) 0%, transparent 70%);
}

.menu-content {
    max-width: 700px;
    width: 90%;
    padding: 1.5rem;
    background: var(--card-bg);
    border-radius: var(--border-radius);
    backdrop-filter: blur(10px);
    border: 1px solid var(--card-border);
    box-shadow: var(--shadow-heavy);
    text-align: center;
    max-height: 85vh;
    overflow-y: auto;
}

.menu-header {
    margin-bottom: 2rem;
}

.game-title {
    font-family: 'Roboto', sans-serif;
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    font-weight: 700;
    margin-bottom: 0.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
}

.title-icon {
    font-size: 1.2em;
    animation: pulse 2s infinite;
}

.title-text {
    background: var(--city-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.game-subtitle {
    font-size: 1rem;
    color: var(--text-secondary);
    font-weight: 300;
}

.setup-section {
    margin-bottom: 2rem;
}

.section-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

/* Input Group */
.input-group {
    margin-bottom: 1.5rem;
}

.input-label {
    display: block;
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    text-align: left;
}

#cityName {
    width: 100%;
    max-width: 300px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--border-radius);
    padding: 0.75rem 1rem;
    color: var(--text-primary);
    font-size: 1rem;
    text-align: center;
}

#cityName:focus {
    outline: none;
    border-color: var(--city-gradient);
    box-shadow: 0 0 0 2px rgba(15, 118, 110, 0.2);
}

#cityName::placeholder {
    color: var(--text-muted);
}

/* Selection Groups */
.selection-group {
    margin-bottom: 1.5rem;
}

.group-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.option-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 0.75rem;
}

.option-btn,
.size-btn {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--border-radius);
    padding: 0.75rem;
    color: var(--text-primary);
    cursor: pointer;
    transition: var(--transition);
    backdrop-filter: blur(10px);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
}

.option-btn:hover,
.size-btn:hover {
    transform: translateY(-2px);
    border-color: rgba(255, 255, 255, 0.2);
}

.option-btn.selected,
.size-btn.selected {
    border-color: var(--city-gradient);
    background: linear-gradient(135deg, rgba(15, 118, 110, 0.1), rgba(13, 148, 136, 0.1));
}

.option-icon,
.size-icon {
    font-size: 1.5rem;
}

.option-name,
.size-name {
    font-weight: 600;
    font-size: 0.9rem;
}

.option-desc,
.size-desc {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.menu-actions {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

/* Game Screen */
#gameScreen {
    display: none;
    flex-direction: row;
    padding: 0;
}

#gameScreen.active {
    display: flex !important;
}

.game-hud {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 100;
    pointer-events: none;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.game-hud > * {
    pointer-events: auto;
}

.hud-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding: 0.5rem;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.hud-left {
    position: absolute;
    top: 80px;
    left: 0.5rem;
    width: 220px;
    max-height: calc(100vh - 160px);
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.hud-right {
    position: absolute;
    top: 80px;
    right: 0.5rem;
    width: 220px;
    max-height: calc(100vh - 160px);
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

/* HUD Panels */
.city-panel,
.resources-panel,
.time-panel,
.building-panel,
.info-panel {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 0.75rem;
    backdrop-filter: blur(10px);
    border: 1px solid var(--card-border);
}

.panel-title {
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.5rem;
}

/* City Panel */
.city-name {
    font-weight: 600;
    font-size: 1rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.city-stats {
    display: flex;
    flex-direction: row;
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: space-between;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8rem;
}

.stat-icon {
    font-size: 1rem;
    width: 20px;
    text-align: center;
}

.stat-label {
    color: var(--text-secondary);
    flex: 1;
}

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

/* Resources Panel */
.resources-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.5rem;
}

.resource-item {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 0.25rem;
    padding: 0.5rem;
    background: rgba(0, 0, 0, 0.3);
    border-radius: var(--border-radius);
}

.resource-icon {
    font-size: 1.2rem;
}

.resource-label {
    font-size: 0.7rem;
    color: var(--text-secondary);
}

.resource-value {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* Time Panel */
.time-controls {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.time-btn {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--border-radius);
    padding: 0.5rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.9rem;
}

.time-btn:hover,
.time-btn.active {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    border-color: rgba(255, 255, 255, 0.2);
}

.date-display {
    text-align: center;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* Building Panel */
.building-categories {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.75rem;
}

.category-tab {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--border-radius);
    padding: 0.5rem;
    cursor: pointer;
    transition: var(--transition);
    font-size: 1rem;
}

.category-tab:hover,
.category-tab.active {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
}

.building-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    max-height: 300px;
    overflow-y: auto;
}

.building-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem;
    background: rgba(0, 0, 0, 0.3);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
}

.building-item:hover {
    background: rgba(255, 255, 255, 0.1);
}

.building-icon {
    font-size: 1.5rem;
}

.building-info {
    flex: 1;
}

.building-name {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-primary);
}

.building-cost {
    font-size: 0.7rem;
    color: var(--text-secondary);
}

/* Info Panel */
.info-content {
    font-size: 0.8rem;
    line-height: 1.4;
    color: var(--text-secondary);
}

/* Game Area */
.game-area {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem;
    width: 100%;
    height: 100vh;
    position: relative;
}

#cityCanvas {
    width: 100%;
    height: 100%;
    max-width: calc(100vw - 1rem);
    max-height: calc(100vh - 1rem);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-heavy);
    background: #1a1a1a;
    border: 1px solid var(--card-border);
}

/* Building Modal */
.building-modal {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 200;
}

.building-modal.hidden {
    display: none;
}

.modal-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
}

.modal-content {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    backdrop-filter: blur(10px);
    border: 1px solid var(--card-border);
    box-shadow: var(--shadow-heavy);
    max-width: 400px;
    width: 90%;
    z-index: 1;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.modal-header h3 {
    font-size: 1.25rem;
    color: var(--text-primary);
}

.close-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    transition: var(--transition);
}

.close-btn:hover {
    color: var(--text-primary);
}

.modal-body {
    margin-bottom: 1rem;
}

.building-details {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

.modal-actions {
    display: flex;
    gap: 0.75rem;
    justify-content: center;
}

/* Game Over Screen */
#gameOverScreen {
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(20px);
}

.results-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center, rgba(15, 118, 110, 0.1) 0%, transparent 70%);
}

.results-content {
    max-width: 600px;
    width: 90%;
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    backdrop-filter: blur(10px);
    border: 1px solid var(--card-border);
    box-shadow: var(--shadow-heavy);
    text-align: center;
}

.results-header {
    margin-bottom: 1.5rem;
}

.results-title {
    font-family: 'Roboto', sans-serif;
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
}

.results-subtitle {
    color: var(--text-secondary);
    font-size: 1rem;
}

.city-overview {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding: 1rem;
    background: rgba(0, 0, 0, 0.5);
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.overview-icon {
    font-size: 3rem;
}

.overview-info {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.overview-label {
    font-size: 0.9rem;
    color: var(--text-muted);
    text-transform: uppercase;
}

.overview-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
}

.achievement-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.achievement-card {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem;
    background: rgba(0, 0, 0, 0.5);
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.achievement-card .achievement-icon {
    font-size: 1.5rem;
}

.achievement-card .achievement-info {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.achievement-card .achievement-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
}

.achievement-card .achievement-value {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.results-actions {
    display: flex;
    gap: 0.75rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Buttons */
.btn-primary {
    background: var(--city-gradient);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    padding: 0.5rem 1.5rem;
    font-weight: 600;
    font-size: 0.85rem;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(15, 118, 110, 0.4);
}

.btn-glow {
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: var(--transition);
}

.btn-primary:hover .btn-glow {
    left: 100%;
}

.btn-secondary {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--card-border);
    border-radius: var(--border-radius);
    padding: 0.5rem 1.5rem;
    font-weight: 500;
    font-size: 0.85rem;
    cursor: pointer;
    transition: var(--transition);
}

.btn-secondary:hover {
    background: var(--card-bg);
    color: var(--text-primary);
    border-color: rgba(255, 255, 255, 0.3);
}

.btn-danger {
    background: var(--danger-gradient);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    padding: 0.5rem 1rem;
    font-weight: 600;
    font-size: 0.85rem;
    cursor: pointer;
    transition: var(--transition);
}

.btn-danger:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(220, 38, 38, 0.4);
}

/* Utility Classes */
.hidden {
    display: none !important;
}

/* Animations */
@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.05); opacity: 0.8; }
}

/* Responsive Design */
@media (max-width: 768px) {
    .menu-content {
        padding: 1rem;
    }
    
    .option-grid {
        grid-template-columns: 1fr;
    }
    
    .hud-top {
        grid-template-columns: 1fr;
        gap: 0.5rem;
    }
    
    .hud-left,
    .hud-right {
        position: relative;
        top: auto;
        left: auto;
        right: auto;
        width: 100%;
        margin-bottom: 1rem;
    }
    
    .game-area {
        margin: 0;
        padding: 0.5rem;
    }
    
    #cityCanvas {
        width: 100%;
        height: auto;
    }
    
    .resources-grid {
        grid-template-columns: 1fr;
    }
    
    .achievement-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .results-actions {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .game-title {
        font-size: 1.5rem;
        flex-direction: column;
        gap: 0.25rem;
    }
    
    .building-categories {
        flex-wrap: wrap;
        gap: 0.25rem;
    }
    
    .time-controls {
        flex-direction: column;
        gap: 0.25rem;
    }
    
    .achievement-stats {
        grid-template-columns: 1fr;
    }
    
    .results-content {
        padding: 1rem;
    }
}

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

/* Focus states */
button:focus,
.option-btn:focus,
.size-btn:focus,
#cityName:focus {
    outline: 2px solid var(--accent-gradient);
    outline-offset: 2px;
}