/* Production source indicator */
#production-source {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin: var(--space-sm) 0 var(--space-md);
    padding: var(--space-sm);
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-light);
    font-size: 0.875rem;
}

#production-source .label {
    opacity: 0.8;
    color: var(--text-secondary);
}

#production-source-name {
    font-weight: 600;
    color: var(--primary);
}

#production-source-clear {
    border: none;
    background: transparent;
    cursor: pointer;
    padding: var(--space-xs);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    color: var(--text-muted);
}

#production-source-clear:hover {
    background: var(--bg-hover);
    color: var(--danger);
}

/* Modern Loading Screen */
#loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: var(--z-modal);
    transition: opacity var(--transition-slow);
}

#loading-screen.hidden {
    opacity: 0;
    pointer-events: none;
}

.loading-content {
    text-align: center;
    max-width: 400px;
    padding: var(--space-2xl);
}

.loading-content h2 {
    font-size: 2rem;
    margin-bottom: var(--space-xl);
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
    letter-spacing: -0.025em;
}

.loading-bar {
    width: 100%;
    height: 8px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    overflow: hidden;
    margin: var(--space-xl) auto;
    position: relative;
}

.loading-progress {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    animation: loading 2s ease-in-out infinite;
    width: 60%;
    border-radius: var(--radius-md);
    position: relative;
}

.loading-progress::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    animation: shimmer 1.5s infinite;
}

@keyframes loading {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(200%); }
}

.loading-content p {
    color: var(--text-secondary);
    margin-top: var(--space-md);
    font-size: 0.9rem;
}

/* Game Over Overlay */
#game-over-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-modal);
    backdrop-filter: blur(10px);
    transition: opacity var(--transition-slow);
}

#game-over-overlay.hidden { 
    display: none; 
}

.game-over-content {
    background: var(--bg-secondary);
    color: var(--text-primary);
    padding: var(--space-2xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    min-width: 400px;
    text-align: center;
    border: 1px solid var(--border-light);
    animation: gameOverSlideIn 0.5s ease;
}

@keyframes gameOverSlideIn {
    from {
        transform: translateY(-50px) scale(0.9);
        opacity: 0;
    }
    to {
        transform: translateY(0) scale(1);
        opacity: 1;
    }
}

.game-over-content h2 { 
    margin: 0 0 var(--space-lg); 
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

.game-over-actions { 
    display: flex; 
    gap: var(--space-md); 
    justify-content: center;
    margin-top: var(--space-lg);
}

.game-over-actions button {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--text-primary);
    border: none;
    border-radius: var(--radius-lg);
    padding: var(--space-md) var(--space-xl);
    cursor: pointer;
    font-weight: 600;
    transition: all var(--transition-fast);
    font-size: 1rem;
}

.game-over-actions button:hover { 
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.game-over-actions button:active {
    transform: translateY(0);
}

/* Modern RTS Game Styles */
:root {
    /* Modern Color Palette */
    --primary: #3B82F6;
    --primary-dark: #2563EB;
    --primary-light: #60A5FA;
    --secondary: #10B981;
    --secondary-dark: #059669;
    --accent: #F59E0B;
    --accent-dark: #D97706;
    --danger: #EF4444;
    --danger-dark: #DC2626;
    --warning: #F59E0B;
    --success: #10B981;
    --info: #06B6D4;
    
    /* Dark Theme Colors */
    --bg-primary: #0F172A;
    --bg-secondary: #1E293B;
    --bg-tertiary: #334155;
    --bg-card: #1E293B;
    --bg-hover: #334155;
    --bg-active: #475569;
    
    /* Text Colors */
    --text-primary: #F8FAFC;
    --text-secondary: #CBD5E1;
    --text-muted: #94A3B8;
    --text-inverse: #0F172A;
    
    /* Border Colors */
    --border-light: #334155;
    --border-medium: #475569;
    --border-dark: #64748B;
    
    /* Spacing Scale */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-glow: 0 0 20px rgba(0, 130, 246, 0.5);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;
    
    /* Z-Index Scale */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
    --z-toast: 1080;
}

/* Legacy Variables (for compatibility) */
:root {
    --primary-color: var(--primary);
    --secondary-color: var(--secondary);
    --success-color: var(--success);
    --warning-color: var(--warning);
    --dark-bg: var(--bg-primary);
    --dark-panel: var(--bg-secondary);
    --light-text: var(--text-primary);
    --border-color: var(--border-light);
    --hover-color: var(--bg-hover);
}

/* Fix for iframe embedding (HF Spaces) */
html, body {
    height: 100vh;
    width: 100vw;
    overflow: hidden;
}

#app {
    min-height: 100vh;
    min-width: 100vw;
}

/* Ensure desktop layout works in iframe */
@media screen and (min-width: 1200px) {
    #game-container {
        min-height: calc(100vh - 80px); /* Subtract topbar height */
    }
    
    #canvas-container {
        min-width: 600px; /* Ensure minimum playable area */
    }
}

/* Prevent iframe scrolling issues */
body {
    overflow: hidden;
    position: fixed;
    width: 100%;
    height: 100%;
}

/* Additional iframe fixes for HF Spaces */
.space-iframe {
    width: 100% !important;
    height: 100vh !important;
    border: none !important;
}

/* Force desktop layout in iframe environments */
.iframe-env #left-sidebar,
.iframe-env #right-sidebar {
    width: 320px !important;
    min-width: 320px !important;
}

.iframe-env #canvas-container {
    min-width: calc(100vw - 640px) !important; /* 320px * 2 sidebars */
}

/* Detect iframe environment via JavaScript */
@media screen {
    #app {
        display: flex;
        flex-direction: column;
        height: 100vh;
        width: 100vw;
    }
}

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

body {
    font-family: 'Inter', 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    overflow: hidden;
    user-select: none;
    line-height: 1.6;
    font-size: 14px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

#app {
    display: flex;
    flex-direction: column;
    height: 100vh;
    width: 100vw;
}

/* Modern Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-medium);
    border-radius: var(--radius-md);
    transition: background var(--transition-fast);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border-dark);
}

/* Focus Styles */
*:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

*:focus:not(:focus-visible) {
    outline: none;
}

/* Selection Styles */
::selection {
    background: var(--primary);
    color: var(--text-inverse);
}

/* Top Bar */
#topbar {
    background: var(--bg-secondary);
    padding: var(--space-md) var(--space-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-light);
    box-shadow: var(--shadow-md);
    z-index: var(--z-fixed); /* Ensure topbar stays above camera controls */
    backdrop-filter: blur(10px);
    background: rgba(30, 41, 59, 0.8);
}

.topbar-left {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
}

.topbar-left h1 {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.025em;
}

#game-info {
    display: flex;
    gap: var(--space-md);
}

.info-badge {
    background: var(--bg-tertiary);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-lg);
    font-size: 0.875rem;
    border: 1px solid var(--border-light);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.info-badge:hover {
    background: var(--bg-hover);
    border-color: var(--primary);
    transform: translateY(-1px);
}

.topbar-right {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
}

.resource-display {
    display: flex;
    gap: var(--space-md);
}

.resource-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    background: var(--bg-tertiary);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-lg);
    font-weight: 600;
    border: 1px solid var(--border-light);
    transition: all var(--transition-fast);
}

.resource-item:hover {
    background: var(--bg-hover);
    border-color: var(--success);
    transform: translateY(-1px);
}

.resource-icon {
    font-size: 1.25rem;
    filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.2));
}

/* Modern Nuke Indicator */
#nuke-indicator {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-light);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-lg);
    min-width: 180px;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

#nuke-indicator::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, transparent, rgba(239, 68, 68, 0.1), transparent);
    transform: translateX(-100%);
    transition: transform 0.6s ease;
}

#nuke-indicator.ready::before {
    transform: translateX(100%);
}

#nuke-indicator.ready {
    background: var(--bg-tertiary);
    border-color: var(--success);
    animation: nukeReady 2s ease-in-out infinite;
    box-shadow: 0 0 15px rgba(16, 185, 129, 0.3);
}

@keyframes nukeReady {
    0%, 100% { 
        box-shadow: 0 0 10px rgba(16, 185, 129, 0.3);
        border-color: var(--success);
    }
    50% { 
        box-shadow: 0 0 25px rgba(16, 185, 129, 0.6);
        border-color: var(--secondary);
    }
}

.nuke-status {
    font-size: 0.75rem;
    font-weight: 600;
    margin-bottom: var(--space-xs);
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

#nuke-indicator.ready .nuke-status {
    color: var(--success);
}

.nuke-charge-container {
    width: 100%;
    height: 6px;
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    overflow: hidden;
    position: relative;
}

.nuke-charge-bar {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--danger), var(--warning));
    transition: width var(--transition-normal);
    border-radius: var(--radius-md);
    position: relative;
    overflow: hidden;
}

.nuke-charge-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transform: translateX(-100%);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

#nuke-indicator.ready .nuke-charge-bar {
    background: linear-gradient(90deg, var(--success), var(--secondary));
}

/* Modern Sound Control */
.sound-control {
    display: flex;
    align-items: center;
}

.sound-btn {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-light);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
    color: var(--text-primary);
    font-size: 1.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    min-height: 44px;
    position: relative;
    overflow: hidden;
}

.sound-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(59, 130, 246, 0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width var(--transition-normal), height var(--transition-normal);
}

.sound-btn:hover {
    background: var(--bg-hover);
    border-color: var(--primary);
    transform: scale(1.05);
    box-shadow: var(--shadow-md);
}

.sound-btn:hover::before {
    width: 100%;
    height: 100%;
}

.sound-btn:active {
    transform: scale(0.95);
}

.sound-btn.muted {
    opacity: 0.6;
    border-color: var(--danger);
    color: var(--text-muted);
}

.sound-btn.muted::after {
    content: '🔇';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 1rem;
}

.sound-icon {
    display: inline-block;
    position: relative;
    z-index: 1;
}

/* Modern Language Selector */
.language-selector {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    background: var(--bg-tertiary);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
    transition: all var(--transition-fast);
}

.language-selector:hover {
    border-color: var(--primary);
    background: var(--bg-hover);
}

.language-selector label {
    font-size: 1.125rem;
    filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.2));
}

#language-select {
    background: var(--bg-primary);
    color: var(--text-primary);
    border: 1px solid var(--border-light);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    cursor: pointer;
    outline: none;
    transition: all var(--transition-fast);
    min-width: 100px;
}

#language-select:hover {
    border-color: var(--primary);
}

#language-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

#language-select option {
    background: var(--bg-secondary);
    color: var(--text-primary);
    padding: var(--space-xs);
}

/* Modern Game Container */
#game-container {
    display: flex;
    flex: 1;
    overflow: hidden;
    background: var(--bg-primary);
}

/* Modern Sidebars */
#left-sidebar, #right-sidebar {
    width: 320px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-light);
    overflow-y: auto;
    overflow-x: hidden;
    transition: all var(--transition-normal);
    position: relative;
}

#right-sidebar {
    border-right: none;
    border-left: 1px solid var(--border-light);
}

.sidebar-section {
    padding: var(--space-lg);
    border-bottom: 1px solid var(--border-light);
    transition: background var(--transition-fast);
}

.sidebar-section:hover {
    background: var(--bg-tertiary);
}

.sidebar-section:last-child {
    border-bottom: none;
}

.sidebar-section h3 {
    margin-bottom: var(--space-md);
    color: var(--primary);
    font-size: 1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Modern Intel Panel */
.intel-section {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(16, 185, 129, 0.1));
    border: 1px solid var(--primary);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    position: relative;
    overflow: hidden;
}

.intel-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    animation: intelGlow 3s ease-in-out infinite;
}

@keyframes intelGlow {
    0%, 100% { opacity: 0.7; }
    50% { opacity: 1; }
}

#intel-panel {
    background: rgba(15, 23, 42, 0.6);
    padding: var(--space-md);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-light);
    min-height: 100px;
    backdrop-filter: blur(10px);
}

.intel-status {
    font-size: 0.875rem;
    color: var(--warning);
    margin-bottom: var(--space-sm);
    font-style: italic;
    opacity: 0.8;
}

.intel-summary {
    font-size: 0.9rem;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
    line-height: 1.6;
    font-weight: 500;
}

.intel-tips {
    font-size: 0.875rem;
    color: var(--success);
    line-height: 1.5;
}

.intel-tips > div {
    margin-bottom: var(--space-xs);
    padding-left: var(--space-md);
    position: relative;
}

.intel-tips > div::before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: bold;
}

#intel-header {
    color: var(--primary);
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: var(--space-md);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

#intel-header.offline {
    color: var(--text-muted);
}

#intel-header.updating {
    color: var(--warning);
}

#intel-header.active {
    color: var(--success);
}

.intel-source-badge {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 500;
    border: 1px solid var(--border-light);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.intel-refresh-btn {
    background: var(--primary);
    color: white;
    border: none;
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 0.875rem;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 32px;
    min-height: 32px;
}

.intel-refresh-btn:hover {
    background: var(--primary-dark);
    transform: rotate(180deg);
}

.intel-refresh-btn:active {
    transform: scale(0.95) rotate(180deg);
}

/* Intel/AI Analysis Panel */
.intel-section {
    background: linear-gradient(135deg, rgba(74, 144, 226, 0.1), rgba(46, 204, 113, 0.1));
    border: 2px solid var(--primary-color);
    border-radius: 8px;
    padding: 15px;
}

#intel-panel {
    background: rgba(0, 0, 0, 0.3);
    padding: 12px;
    border-radius: 5px;
    border: 1px solid var(--border-color);
    min-height: 80px;
}

.intel-status {
    font-size: 12px;
    color: var(--warning-color);
    margin-bottom: 8px;
    font-style: italic;
}

.intel-summary {
    font-size: 13px;
    color: var(--light-text);
    margin-bottom: 10px;
    line-height: 1.5;
    font-weight: 500;
}

.intel-tips {
    font-size: 11px;
    color: var(--success-color);
    line-height: 1.4;
}

.intel-tips > div {
    margin-bottom: 4px;
    padding-left: 12px;
    position: relative;
}

.intel-tips > div::before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--primary-color);
}

#intel-header {
    color: var(--primary-color);
    font-size: 14px;
    font-weight: bold;
    margin-bottom: 10px;
}

#intel-header.offline {
    color: var(--secondary-color);
}

#intel-header.updating {
    color: var(--warning-color);
}

#intel-header.active {
    color: var(--success-color);
}

.intel-refresh-btn {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 6px 12px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.3s ease;
}

.intel-refresh-btn:hover {
    background: var(--success-color);
    transform: rotate(180deg);
}

.intel-refresh-btn:active {
    transform: scale(0.95) rotate(180deg);
}

/* Modern Action Buttons */
.action-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.action-btn {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border: 1px solid var(--primary);
    color: white;
    padding: var(--space-md);
    border-radius: var(--radius-lg);
    cursor: pointer;
    font-weight: 600;
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
    text-align: left;
    font-size: 0.875rem;
}

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

.action-btn:hover {
    transform: translateX(4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
}

.action-btn:hover::before {
    left: 100%;
}

.action-btn:active {
    transform: translateX(2px);
}

/* Modern Game Stats */
#game-stats {
    background: var(--bg-tertiary);
    padding: var(--space-md);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
}

.stat-row {
    display: flex;
    justify-content: space-between;
    padding: var(--space-sm) 0;
    border-bottom: 1px solid var(--border-light);
    transition: all var(--transition-fast);
}

.stat-row:last-child {
    border-bottom: none;
}

.stat-row:hover {
    background: var(--bg-hover);
    margin: 0 calc(-1 * var(--space-md));
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-sm);
}

.stat-row span:last-child {
    color: var(--primary);
    font-weight: 600;
}

/* Modern Notifications */
#notifications {
    position: fixed;
    top: 80px;
    right: var(--space-lg);
    z-index: var(--z-toast);
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    pointer-events: none;
}

.notification {
    background: rgba(15, 23, 42, 0.95);
    border: 1px solid var(--border-light);
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    backdrop-filter: blur(10px);
    animation: slideIn 0.3s ease, fadeOut 0.3s ease 2.7s;
    pointer-events: all;
    transition: all var(--transition-fast);
    max-width: 400px;
}

.notification:hover {
    transform: translateX(-4px);
    box-shadow: var(--shadow-glow);
}

.notification.success { 
    border-color: var(--success);
    background: rgba(16, 185, 129, 0.1);
}
.notification.warning { 
    border-color: var(--warning);
    background: rgba(245, 158, 11, 0.1);
}
.notification.error { 
    border-color: var(--danger);
    background: rgba(239, 68, 68, 0.1);
}

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

@keyframes fadeOut {
    to {
        opacity: 0;
        transform: translateX(100%);
    }
}

/* Modern Hint System */
.hint-container {
    position: fixed;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    padding: var(--space-md) var(--space-xl);
    border-radius: var(--radius-lg);
    font-size: 1rem;
    font-weight: 500;
    box-shadow: var(--shadow-xl);
    z-index: var(--z-tooltip);
    max-width: 600px;
    text-align: center;
    opacity: 0;
    transition: all var(--transition-normal);
    pointer-events: none;
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
}

.hint-container.center {
    top: 50%;
    transform: translate(-50%, -50%);
}

.hint-container.top {
    top: 80px;
    transform: translateX(-50%) translateY(0);
}

.hint-container.bottom {
    bottom: 80px;
    top: auto;
    transform: translateX(-50%) translateY(0);
}

.hint-container.visible {
    opacity: 1;
}

.hint-container.center.visible {
    transform: translate(-50%, -50%) scale(1.05);
}

.hint-container.top.visible {
    transform: translateX(-50%) translateY(8px);
}

.hint-container.bottom.visible {
    transform: translateX(-50%) translateY(-8px);
}

/* Hint glow effect */
.hint-container::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(45deg, var(--primary), var(--secondary), var(--primary));
    border-radius: var(--radius-lg);
    z-index: -1;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.hint-container.visible::before {
    opacity: 0.6;
    animation: hintGlow 3s ease-in-out infinite;
}

@keyframes hintGlow {
    0%, 100% { opacity: 0.4; }
    50% { opacity: 0.8; }
}

/* Modern Canvas Container */
#canvas-container {
    flex: 1;
    position: relative;
    background: var(--bg-primary);
    overflow: hidden;
}

#game-canvas {
    width: 100%;
    height: 100%;
    display: block;
    cursor: crosshair;
    image-rendering: crisp-edges;
    image-rendering: pixelated;
}

/* Modern Minimap - Base Styles */
#minimap-container {
    position: absolute;
    bottom: var(--space-lg);
    right: var(--space-lg);
    width: 240px;
    height: 180px;
    background: rgba(15, 23, 42, 0.9);
    border: 1px solid var(--primary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    backdrop-filter: blur(10px);
    transition: all var(--transition-fast);
    z-index: var(--z-fixed);
    /* Ensure it doesn't overlap with right sidebar */
    max-width: calc(100% - (var(--space-lg) * 2));
    max-height: calc(100% - (var(--space-lg) * 2));
}

#minimap-container:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-glow);
    /* Prevent overflow on hover */
    transform-origin: bottom right;
}

#minimap {
    width: 100%;
    height: 100%;
    display: block;
    cursor: pointer;
}

#minimap-viewport {
    position: absolute;
    border: 2px solid rgba(255, 255, 255, 0.8);
    background: rgba(255, 255, 255, 0.1);
    pointer-events: none;
    border-radius: var(--radius-sm);
}

/* Additional responsive minimap adjustments */
@media (max-width: 1400px) {
    #minimap-container {
        right: var(--space-md);
        bottom: var(--space-md);
        width: 200px;
        height: 150px;
    }
}

@media (max-width: 1200px) {
    #minimap-container {
        width: 180px;
        height: 135px;
    }
}

/* Modern Camera Controls */
#camera-controls {
    position: absolute;
    top: calc(var(--space-xl) + var(--space-md)); /* Position below topbar */
    right: var(--space-lg);
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    z-index: var(--z-sticky);
}

.camera-btn {
    width: 48px;
    height: 48px;
    background: rgba(15, 23, 42, 0.9);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    font-size: 1.125rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(10px);
}

.camera-btn:hover {
    background: var(--primary);
    transform: scale(1.1);
    box-shadow: var(--shadow-lg);
}

.camera-btn:active {
    transform: scale(0.95);
}

/* Responsive camera controls adjustments */
@media (max-width: 1400px) {
    #camera-controls {
        top: calc(var(--space-xl) + var(--space-sm));
        right: var(--space-md);
    }
    
    .camera-btn {
        width: 44px;
        height: 44px;
        font-size: 1rem;
    }
}

@media (max-width: 1024px) {
    #camera-controls {
        top: var(--space-xl);
        right: var(--space-md);
    }
    
    .camera-btn {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
}

/* Responsive Design - Optimized for Desktop Gaming */

/* Large Desktop (>1600px) - Optimal gaming experience */
@media (min-width: 1600px) {
    #left-sidebar, #right-sidebar {
        width: 360px;
    }
    
    #minimap-container {
        width: 280px;
        height: 210px;
    }
    
    .build-buttons, .unit-buttons {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Standard Desktop (1200px-1600px) - Good gaming experience */
@media (max-width: 1600px) {
    #left-sidebar, #right-sidebar {
        width: 320px;
    }
    
    #minimap-container {
        width: 240px;
        height: 180px;
    }
}

/* Small Desktop/Large Tablet (1024px-1200px) - Still playable */
@media (max-width: 1200px) {
    #left-sidebar, #right-sidebar {
        width: 280px;
    }
    
    .build-buttons, .unit-buttons {
        grid-template-columns: 1fr;
    }
    
    #minimap-container {
        width: 200px;
        height: 150px;
    }
    
    .sidebar-section {
        padding: var(--space-md);
    }
}

/* Tablet (768px-1024px) - Compact but playable */
@media (max-width: 1024px) {
    #left-sidebar, #right-sidebar {
        width: 240px;
    }
    
    #minimap-container {
        width: 180px;
        height: 135px;
        bottom: var(--space-md);
        right: var(--space-md);
    }
    
    #camera-controls {
        top: var(--space-md);
        right: var(--space-md);
    }
    
    .camera-btn {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
    
    .hint-container {
        font-size: 0.875rem;
        padding: var(--space-md) var(--space-lg);
        max-width: 500px;
    }
    
    .game-over-content {
        min-width: 320px;
        padding: var(--space-xl);
    }
}

/* Mobile (<768px) - Touch optimized */
@media (max-width: 768px) {
    #topbar {
        padding: var(--space-sm) var(--space-md);
        flex-wrap: wrap;
        gap: var(--space-sm);
    }
    
    .topbar-left h1 {
        font-size: 1.25rem;
    }
    
    .resource-display {
        gap: var(--space-sm);
    }
    
    .resource-item {
        padding: var(--space-xs) var(--space-sm);
        font-size: 0.875rem;
    }
    
    #left-sidebar, #right-sidebar {
        width: 200px;
    }
    
    .build-buttons, .unit-buttons {
        grid-template-columns: 1fr;
        gap: var(--space-sm);
    }
    
    .build-btn, .unit-btn {
        padding: var(--space-sm);
    }
    
    .build-icon, .unit-icon {
        font-size: 1.5rem;
    }
    
    #minimap-container {
        width: 160px;
        height: 120px;
    }
    
    .hint-container {
        font-size: 0.8rem;
        padding: var(--space-sm) var(--space-md);
        max-width: 400px;
    }
    
    .game-over-content {
        min-width: 280px;
        padding: var(--space-lg);
    }
    
    .game-over-content h2 {
        font-size: 1.25rem;
    }
}

/* Touch-friendly adjustments for tablets/mobile */
@media (hover: none) and (pointer: coarse) {
    .build-btn, .unit-btn, .action-btn, .camera-btn, .sound-btn {
        min-height: 44px;
        min-width: 44px;
    }
    
    .control-group {
        min-height: 48px;
    }
    
    #language-select {
        min-height: 44px;
        padding: var(--space-sm);
    }
}