:root {
    --bg-color: #050A0F;
    --primary: #00B894;
    --primary-hover: #00A383;
    --secondary: #55EFC4;
    --glass-bg: rgba(10, 20, 30, 0.7);
    --glass-border: rgba(255, 255, 255, 0.1);
    --text-main: #ffffff;
    --text-muted: #a0aec0;
    --danger: #EF4444;
    --font-main: 'Inter', sans-serif;
    --font-mono: 'Roboto Mono', monospace;
}

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    font-family: var(--font-main);
    overflow: hidden;
    margin: 0;
    padding: 0;
    height: 100vh;
    width: 100vw;
}

.app-container {
    display: flex;
    flex-direction: column;
    height: 100%;
    padding: 10px;
    gap: 10px;
}

/* Glassmorphism Panel */
.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

/* Header */
.resource-bar {
    display: flex;
    justify-content: space-around;
    padding: 15px;
    flex-shrink: 0;
}

.resource-item {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.resource-item .label {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.resource-item .value {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--secondary);
}

.resource-item.highlight .value {
    color: #ffd700;
}

.mono {
    font-family: var(--font-mono);
}

/* Main Grid */
.game-grid {
    display: grid;
    grid-template-columns: 300px 1fr 300px;
    gap: 10px;
    flex-grow: 1;
    overflow: hidden;
}

/* Panels */
.panel {
    display: flex;
    flex-direction: column;
    padding: 15px;
    overflow-y: auto;
}

.panel h2 {
    font-size: 1.2rem;
    margin-bottom: 15px;
    border-bottom: 1px solid var(--glass-border);
    padding-bottom: 10px;
    color: var(--primary);
}

/* Left Panel */
.clicker-area {
    text-align: center;
    margin-bottom: 20px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 8px;
}

.primary-btn {
    background: var(--primary);
    color: #000;
    border: none;
    padding: 15px 30px;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
}

.primary-btn:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 184, 148, 0.3);
}

.primary-btn:active {
    transform: translateY(0);
}

.click-info {
    margin-top: 10px;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.building-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.building-card {
    background: rgba(255, 255, 255, 0.05);
    padding: 10px;
    border-radius: 8px;
    border: 1px solid transparent;
    transition: all 0.2s;
}

.building-card:hover {
    border-color: var(--primary);
    background: rgba(255, 255, 255, 0.08);
}

.building-card h3 {
    margin: 0;
    font-size: 1rem;
}

.building-card p {
    margin: 5px 0;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.building-card .cost-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 8px;
}

.buy-btn {
    background: transparent;
    border: 1px solid var(--secondary);
    color: var(--secondary);
    padding: 5px 10px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.85rem;
    transition: all 0.2s;
}

.buy-btn:hover:not(:disabled) {
    background: var(--secondary);
    color: #000;
}

.buy-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    border-color: #555;
    color: #555;
}

.count-badge {
    background: var(--primary);
    color: #000;
    font-size: 0.7rem;
    padding: 2px 6px;
    border-radius: 10px;
    font-weight: bold;
}

/* Center Canvas */
.canvas-container {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    background: #000; /* Fallback */
    border: 1px solid var(--glass-border);
}

#game-canvas {
    width: 100%;
    height: 100%;
    display: block;
}

/* Right Panel */
.panel-tabs {
    display: flex;
    gap: 5px;
    margin-bottom: 15px;
    border-bottom: 1px solid var(--glass-border);
}

.tab-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    padding: 8px 12px;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all 0.2s;
}

.tab-btn:hover {
    color: var(--text-main);
}

.tab-btn.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

.tab-content {
    display: none;
    flex-direction: column;
    gap: 15px;
}

.tab-content.active {
    display: flex;
}

.upgrade-card {
    background: rgba(255, 255, 255, 0.05);
    padding: 10px;
    border-radius: 8px;
    margin-bottom: 10px;
}

.upgrade-card.purchased {
    opacity: 0.5;
    text-decoration: line-through;
}

@keyframes pulse-danger {
    0% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.7); }
    70% { box-shadow: 0 0 0 10px rgba(239, 68, 68, 0); }
    100% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0); }
}

.danger-btn {
    background: var(--danger);
    color: white;
    border: none;
    padding: 10px;
    border-radius: 6px;
    cursor: pointer;
    width: 100%;
    margin-top: 10px;
    transition: all 0.3s ease;
}

.danger-btn:not(:disabled):hover {
    background: #d63031;
    transform: scale(1.02);
}

#prestige-btn:not(:disabled) {
    animation: pulse-danger 2s infinite;
}

.secondary-btn {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 1px solid var(--glass-border);
    padding: 10px;
    border-radius: 6px;
    cursor: pointer;
    width: 100%;
    margin-bottom: 10px;
}

.secondary-btn:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* Highlight Text */
.highlight-text {
    color: var(--secondary);
    font-weight: bold;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.1);
}

::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* Responsive */
@media (max-width: 900px) {
    .game-grid {
        grid-template-columns: 1fr;
        grid-template-rows: auto 400px auto;
        overflow-y: auto;
    }

    .app-container {
        overflow-y: auto;
    }
}