:root {
    --bg-deep: #06060f;
    --bg-panel: rgba(12, 12, 30, 0.85);
    --bg-card: rgba(18, 18, 45, 0.9);
    --neon-cyan: #00f0ff;
    --neon-magenta: #ff00aa;
    --neon-green: #00ff88;
    --neon-blue: #4488ff;
    --neon-purple: #aa44ff;
    --neon-orange: #ff8800;
    --neon-yellow: #ffdd00;
    --text-primary: #e8e8f0;
    --text-dim: #6a6a8a;
    --cpu-color: #4488ff;
    --gpu-color: #00ff88;
    --ram-color: #aa44ff;
    --storage-color: #ff8800;
    --cooling-color: #00f0ff;
    --psu-color: #ffdd00;
}

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

body {
    background: var(--bg-deep);
    color: var(--text-primary);
    font-family: 'IBM Plex Sans', sans-serif;
    overflow-x: hidden;
    min-height: 100vh;
}

body::before {
    content: '';
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background:
        linear-gradient(180deg, transparent 0%, rgba(0,240,255,0.015) 50%, transparent 100%),
        repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(0,240,255,0.03) 2px, rgba(0,240,255,0.03) 4px);
    pointer-events: none;
    z-index: 9999;
    animation: scanlines 8s linear infinite;
}

@keyframes scanlines {
    0% { transform: translateY(0); }
    100% { transform: translateY(4px); }
}

#header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 20px;
    background: var(--bg-panel);
    border-bottom: 1px solid rgba(0,240,255,0.15);
    backdrop-filter: blur(20px);
    position: relative;
    z-index: 100;
}

#game-title {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.1rem;
    font-weight: 800;
    letter-spacing: 3px;
    color: var(--neon-cyan);
    text-shadow: 0 0 20px rgba(0,240,255,0.5);
    animation: glitch 4s infinite;
}

.colon {
    color: var(--neon-magenta);
}

@keyframes glitch {
    0%, 92%, 94%, 96%, 100% { opacity: 1; transform: translate(0); }
    93% { opacity: 0.8; transform: translate(-2px, 1px); text-shadow: 2px 0 var(--neon-magenta), -2px 0 var(--neon-green); }
    95% { opacity: 0.9; transform: translate(1px, -1px); text-shadow: -1px 0 var(--neon-cyan), 1px 0 var(--neon-magenta); }
}

#tp-display {
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(0,240,255,0.08);
    border: 1px solid rgba(0,240,255,0.25);
    border-radius: 8px;
    padding: 8px 16px;
    font-family: 'JetBrains Mono', monospace;
}

.tp-icon {
    font-size: 1.2rem;
    animation: pulse-glow 2s ease-in-out infinite;
}

@keyframes pulse-glow {
    0%, 100% { filter: brightness(1); transform: scale(1); }
    50% { filter: brightness(1.5); transform: scale(1.1); }
}

#tp-count {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--neon-cyan);
    min-width: 60px;
    text-align: right;
}

.tp-label {
    font-size: 0.75rem;
    color: var(--text-dim);
    font-weight: 300;
}

#stats-toggle {
    cursor: pointer;
    padding: 6px 12px;
    border: 1px solid rgba(0,240,255,0.2);
    border-radius: 6px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem;
    transition: all 0.3s;
}

#stats-toggle:hover {
    background: rgba(0,240,255,0.1);
    border-color: var(--neon-cyan);
}

#stats-panel {
    position: absolute;
    top: 60px;
    right: 20px;
    background: var(--bg-card);
    border: 1px solid rgba(0,240,255,0.2);
    border-radius: 10px;
    padding: 16px;
    backdrop-filter: blur(20px);
    z-index: 200;
    min-width: 220px;
    transition: all 0.3s ease;
}

#stats-panel.hidden {
    opacity: 0;
    pointer-events: none;
    transform: translateY(-10px);
}

.stat-row {
    display: flex;
    justify-content: space-between;
    padding: 6px 0;
    border-bottom: 1px solid rgba(255,255,255,0.05);
    font-size: 0.8rem;
}

.stat-label {
    font-family: 'JetBrains Mono', monospace;
    color: var(--text-dim);
    font-size: 0.7rem;
}

.stat-value {
    font-family: 'JetBrains Mono', monospace;
    font-weight: 700;
    color: var(--neon-cyan);
    font-size: 0.75rem;
    transition: all 0.5s ease;
}

#main-container {
    display: flex;
    height: calc(100vh - 60px - 40px);
}

#left-panel {
    width: 45%;
    display: flex;
    flex-direction: column;
    border-right: 1px solid rgba(0,240,255,0.1);
    overflow: hidden;
}

#right-panel {
    width: 55%;
    position: relative;
}

#scene-container {
    width: 100%;
    height: 100%;
}

#scene-container canvas {
    display: block;
}

#clicker-section {
    padding: 20px;
    text-align: center;
    border-bottom: 1px solid rgba(0,240,255,0.1);
    flex-shrink: 0;
}

#click-btn {
    width: 160px;
    height: 160px;
    border-radius: 50%;
    border: 3px solid var(--neon-cyan);
    background: radial-gradient(circle at 40% 40%, rgba(0,240,255,0.15), rgba(0,240,255,0.02));
    cursor: pointer;
    position: relative;
    transition: all 0.15s ease;
    overflow: hidden;
    box-shadow: 0 0 30px rgba(0,240,255,0.15), inset 0 0 30px rgba(0,240,255,0.05);
    animation: idle-glow 3s ease-in-out infinite;
}

@keyframes idle-glow {
    0%, 100% { box-shadow: 0 0 30px rgba(0,240,255,0.15), inset 0 0 30px rgba(0,240,255,0.05); }
    50% { box-shadow: 0 0 50px rgba(0,240,255,0.3), inset 0 0 40px rgba(0,240,255,0.1); }
}

#click-btn:hover {
    transform: scale(1.05);
    border-color: #fff;
    box-shadow: 0 0 60px rgba(0,240,255,0.4);
}

#click-btn:active {
    transform: scale(0.93);
    animation: click-burst 0.3s ease-out;
}

@keyframes click-burst {
    0% { box-shadow: 0 0 30px rgba(0,240,255,0.5); }
    50% { box-shadow: 0 0 80px rgba(0,240,255,0.8), 0 0 120px rgba(0,240,255,0.4); }
    100% { box-shadow: 0 0 30px rgba(0,240,255,0.15); }
}

.click-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.click-icon {
    font-size: 2.5rem;
    color: var(--neon-cyan);
    filter: drop-shadow(0 0 10px rgba(0,240,255,0.5));
}

.click-text {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.55rem;
    font-weight: 700;
    letter-spacing: 1px;
    color: var(--text-primary);
}

#click-info {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 10px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem;
    color: var(--text-dim);
}

#passive-info {
    color: var(--neon-green);
}

#skill-tree {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
    scrollbar-width: thin;
    scrollbar-color: rgba(0,240,255,0.3) transparent;
}

#skill-tree::-webkit-scrollbar {
    width: 6px;
}

#skill-tree::-webkit-scrollbar-thumb {
    background: rgba(0,240,255,0.3);
    border-radius: 3px;
}

#tree-container {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.branch-section {
    background: var(--bg-card);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 10px;
    padding: 12px;
    transition: all 0.3s;
}

.branch-header {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    font-weight: 700;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
    letter-spacing: 1px;
}

.branch-nodes {
    display: flex;
    gap: 8px;
    align-items: center;
}

.node-connector {
    width: 20px;
    height: 2px;
    background: rgba(255,255,255,0.1);
    flex-shrink: 0;
    transition: all 0.5s;
}

.node-connector.active {
    background: var(--neon-cyan);
    box-shadow: 0 0 8px currentColor;
}

.skill-node {
    flex: 1;
    min-width: 0;
    padding: 10px;
    border: 2px solid rgba(255,255,255,0.1);
    border-radius: 8px;
    cursor: pointer;
    position: relative;
    transition: all 0.3s ease;
    background: rgba(255,255,255,0.02);
}

.skill-node.locked {
    opacity: 0.4;
    filter: grayscale(0.7);
}

.skill-node.locked::after {
    content: '🔒';
    position: absolute;
    top: 4px;
    right: 4px;
    font-size: 0.65rem;
}

.skill-node.affordable {
    opacity: 1;
    filter: none;
    animation: affordable-pulse 2s ease-in-out infinite;
}

@keyframes affordable-pulse {
    0%, 100% { border-color: rgba(0,240,255,0.4); box-shadow: 0 0 10px rgba(0,240,255,0.1); }
    50% { border-color: rgba(0,240,255,0.9); box-shadow: 0 0 25px rgba(0,240,255,0.3); }
}

.skill-node.unlocked {
    opacity: 1;
    filter: none;
    background: rgba(0,240,255,0.05);
}

.skill-node.unlocked::after {
    content: '✓';
    position: absolute;
    top: 4px;
    right: 6px;
    font-size: 0.7rem;
    color: var(--neon-green);
    font-weight: 800;
}

.node-tier {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.55rem;
    color: var(--text-dim);
    margin-bottom: 2px;
}

.node-name {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem;
    font-weight: 700;
    margin-bottom: 3px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.node-cost {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.6rem;
    color: var(--neon-yellow);
}

.node-flavor {
    font-size: 0.55rem;
    color: var(--text-dim);
    font-style: italic;
    margin-top: 4px;
    line-height: 1.3;
    display: none;
}

.skill-node:hover .node-flavor {
    display: block;
}

.skill-node.unlocked .node-cost {
    color: var(--neon-green);
}

.node-unlock-flash {
    animation: unlock-flash 0.6s ease-out;
}

@keyframes unlock-flash {
    0% { transform: scale(1); }
    30% { transform: scale(1.1); box-shadow: 0 0 40px rgba(0,240,255,0.6); }
    100% { transform: scale(1); }
}

.bonus-node {
    background: rgba(255,0,170,0.05);
    border-color: rgba(255,0,170,0.2);
}

.bonus-node.affordable {
    animation: bonus-pulse 2s ease-in-out infinite;
}

@keyframes bonus-pulse {
    0%, 100% { border-color: rgba(255,0,170,0.3); }
    50% { border-color: rgba(255,0,170,0.8); box-shadow: 0 0 20px rgba(255,0,170,0.3); }
}

#reset-area {
    padding: 10px 16px;
    border-top: 1px solid rgba(0,240,255,0.1);
    text-align: center;
    flex-shrink: 0;
}

#reset-btn {
    background: transparent;
    border: 1px solid rgba(255,50,50,0.3);
    color: rgba(255,50,50,0.6);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.65rem;
    padding: 6px 16px;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s;
}

#reset-btn:hover {
    border-color: rgba(255,50,50,0.8);
    color: rgba(255,50,50,1);
    background: rgba(255,50,50,0.1);
}

#unlock-banner {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(0,0,0,0.9);
    border: 2px solid var(--neon-cyan);
    padding: 20px 50px;
    border-radius: 12px;
    z-index: 500;
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.2rem;
    font-weight: 800;
    letter-spacing: 3px;
    color: var(--neon-cyan);
    text-shadow: 0 0 30px rgba(0,240,255,0.8);
    box-shadow: 0 0 60px rgba(0,240,255,0.3);
    pointer-events: none;
    transition: opacity 0.3s;
}

#unlock-banner.hidden {
    opacity: 0;
}

.float-text {
    position: fixed;
    pointer-events: none;
    font-family: 'JetBrains Mono', monospace;
    font-weight: 800;
    font-size: 1rem;
    color: var(--neon-cyan);
    text-shadow: 0 0 10px rgba(0,240,255,0.5);
    z-index: 300;
    animation: float-up 1s ease-out forwards;
}

@keyframes float-up {
    0% { opacity: 1; transform: translateY(0) scale(1); }
    100% { opacity: 0; transform: translateY(-60px) scale(0.5); }
}

.flavor-toast {
    position: fixed;
    bottom: 100px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0,0,0,0.9);
    border: 1px solid rgba(0,240,255,0.3);
    padding: 10px 24px;
    border-radius: 8px;
    font-style: italic;
    font-size: 0.85rem;
    color: var(--text-primary);
    z-index: 400;
    animation: toast-in 0.3s ease, toast-out 0.3s ease 2.5s forwards;
    white-space: nowrap;
}

@keyframes toast-in {
    0% { opacity: 0; transform: translateX(-50%) translateY(20px); }
    100% { opacity: 1; transform: translateX(-50%) translateY(0); }
}

@keyframes toast-out {
    0% { opacity: 1; }
    100% { opacity: 0; }
}

footer {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 16px;
    padding: 10px;
    font-size: 0.7rem;
    color: var(--text-dim);
    border-top: 1px solid rgba(0,240,255,0.08);
    font-family: 'JetBrains Mono', monospace;
}

footer a {
    color: var(--neon-cyan);
    text-decoration: none;
    transition: color 0.3s;
}

footer a:hover {
    color: #fff;
}

/* Mobile */
@media (max-width: 768px) {
    #main-container {
        flex-direction: column-reverse;
        height: auto;
    }
    
    #right-panel {
        width: 100%;
        height: 35vh;
    }
    
    #left-panel {
        width: 100%;
        border-right: none;
        border-top: 1px solid rgba(0,240,255,0.1);
        max-height: calc(65vh - 60px - 40px);
    }
    
    #click-btn {
        width: 120px;
        height: 120px;
    }
    
    .click-icon { font-size: 1.8rem; }
    .click-text { font-size: 0.5rem; }
    
    #game-title {
        font-size: 0.75rem;
        letter-spacing: 1px;
    }
    
    #tp-count { font-size: 1rem; }
    
    .branch-nodes {
        flex-wrap: nowrap;
    }
    
    .node-flavor { display: none !important; }

    .skill-node {
        padding: 8px;
    }

    .node-name { font-size: 0.6rem; }
    .node-cost { font-size: 0.55rem; }
    .node-connector { width: 12px; }
}

/* Color themes for branches */
.branch-cpu .branch-header { color: var(--cpu-color); }
.branch-cpu .skill-node.unlocked { border-color: var(--cpu-color); }
.branch-cpu .skill-node.affordable { border-color: var(--cpu-color); box-shadow: 0 0 15px rgba(68,136,255,0.2); }
.branch-cpu .node-connector.active { color: var(--cpu-color); background: var(--cpu-color); }

.branch-gpu .branch-header { color: var(--gpu-color); }
.branch-gpu .skill-node.unlocked { border-color: var(--gpu-color); }
.branch-gpu .skill-node.affordable { border-color: var(--gpu-color); }
.branch-gpu .node-connector.active { color: var(--gpu-color); background: var(--gpu-color); }

.branch-ram .branch-header { color: var(--ram-color); }
.branch-ram .skill-node.unlocked { border-color: var(--ram-color); }
.branch-ram .skill-node.affordable { border-color: var(--ram-color); }
.branch-ram .node-connector.active { color: var(--ram-color); background: var(--ram-color); }

.branch-storage .branch-header { color: var(--storage-color); }
.branch-storage .skill-node.unlocked { border-color: var(--storage-color); }
.branch-storage .skill-node.affordable { border-color: var(--storage-color); }
.branch-storage .node-connector.active { color: var(--storage-color); background: var(--storage-color); }

.branch-cooling .branch-header { color: var(--cooling-color); }
.branch-cooling .skill-node.unlocked { border-color: var(--cooling-color); }
.branch-cooling .skill-node.affordable { border-color: var(--cooling-color); }
.branch-cooling .node-connector.active { color: var(--cooling-color); background: var(--cooling-color); }

.branch-psu .branch-header { color: var(--psu-color); }
.branch-psu .skill-node.unlocked { border-color: var(--psu-color); }
.branch-psu .skill-node.affordable { border-color: var(--psu-color); }
.branch-psu .node-connector.active { color: var(--psu-color); background: var(--psu-color); }

/* Motherboard node */
.motherboard-section {
    text-align: center;
    margin-bottom: 8px;
}

.motherboard-node {
    display: inline-block;
    padding: 12px 24px;
    border: 2px solid rgba(0,240,255,0.3);
    border-radius: 10px;
    background: var(--bg-card);
    cursor: pointer;
    transition: all 0.3s;
    font-family: 'JetBrains Mono', monospace;
}

.motherboard-node.unlocked {
    border-color: var(--neon-cyan);
    background: rgba(0,240,255,0.08);
    box-shadow: 0 0 20px rgba(0,240,255,0.15);
}

.motherboard-node.affordable {
    animation: affordable-pulse 2s ease-in-out infinite;
}

.mb-icon { font-size: 1.2rem; }
.mb-name { font-weight: 700; font-size: 0.8rem; margin-top: 4px; }
.mb-cost { font-size: 0.65rem; color: var(--neon-yellow); margin-top: 2px; }

/* Celebration rainbow */
.rainbow-mode #scene-container {
    animation: rainbow-border 2s linear infinite;
}

@keyframes rainbow-border {
    0% { box-shadow: inset 0 0 40px rgba(255,0,0,0.2); }
    16% { box-shadow: inset 0 0 40px rgba(255,165,0,0.2); }
    33% { box-shadow: inset 0 0 40px rgba(255,255,0,0.2); }
    50% { box-shadow: inset 0 0 40px rgba(0,255,0,0.2); }
    66% { box-shadow: inset 0 0 40px rgba(0,0,255,0.2); }
    83% { box-shadow: inset 0 0 40px rgba(128,0,255,0.2); }
    100% { box-shadow: inset 0 0 40px rgba(255,0,0,0.2); }
}

/* Bonus section */
.bonus-section {
    background: rgba(255,0,170,0.03);
    border-color: rgba(255,0,170,0.1);
}

.bonus-section .branch-header {
    color: var(--neon-magenta);
}