:root {
    --bg-color: #0f172a;
    --panel-bg: rgba(30, 41, 59, 0.7);
    --panel-border: rgba(255, 255, 255, 0.1);
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --accent: #3b82f6;
    --accent-hover: #2563eb;
    --success: #10b981;
    --success-hover: #059669;
    --warning: #fbbf24;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    overflow: hidden;
    user-select: none;
}

#ui-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    display: flex;
    flex-direction: column;
    pointer-events: none;
    z-index: 10;
}

header {
    display: flex;
    justify-content: space-between;
    padding: 1rem 2rem;
    pointer-events: auto;
}

.level-indicator h1 {
    font-size: 2rem;
    font-weight: 800;
    background: linear-gradient(135deg, #60a5fa, #c084fc);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 4px 10px rgba(0,0,0,0.3);
}

.level-indicator p {
    color: var(--text-muted);
    font-weight: 600;
}

.economy-ui {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.glass-panel {
    background: var(--panel-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--panel-border);
    border-radius: 12px;
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.glass-btn {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid var(--panel-border);
    color: var(--text-main);
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    pointer-events: auto;
}

.glass-btn:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-2px);
}

.glass-btn:active {
    transform: translateY(1px);
}

.primary-btn {
    background: var(--accent);
    border-color: var(--accent-hover);
}

.primary-btn:hover {
    background: var(--accent-hover);
}

#game-container {
    flex-grow: 1;
    position: relative;
    pointer-events: auto;
}

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

#minimap-container {
    position: absolute;
    top: 1rem;
    right: 2rem;
    padding: 0.5rem;
    border-radius: 16px;
}

#minimap {
    border-radius: 12px;
}

#powerup-ui {
    position: absolute;
    bottom: 2rem;
    left: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.power-btn {
    background: rgba(15, 23, 42, 0.8);
    border: 1px solid var(--accent);
    font-size: 1.1rem;
}

.power-btn.active {
    background: var(--accent);
    box-shadow: 0 0 15px var(--accent);
}

/* Animated Hub Menu Overlay */
.glass-menu {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 24px;
    padding: 3rem;
    width: 90%;
    max-width: 800px;
    text-align: center;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
    animation: slideIn 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}

@keyframes slideIn {
    0% { opacity: 0; transform: translate(-50%, -60%) scale(0.9); }
    100% { opacity: 1; transform: translate(-50%, -50%) scale(1); }
}

.menu-title {
    font-size: 3.5rem;
    margin-bottom: 2rem;
    background: linear-gradient(135deg, #3b82f6, #10b981);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 4px 20px rgba(59, 130, 246, 0.5);
}

.menu-content {
    display: flex;
    flex-direction: row;
    gap: 2rem;
    justify-content: center;
    align-items: center;
}

.shop-section {
    flex: 1;
    background: rgba(255, 255, 255, 0.05);
    padding: 2rem;
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.shop-section h3 {
    color: var(--warning);
    font-size: 1.5rem;
}

.shop-section p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.pulse-anim {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(59, 130, 246, 0.4); }
    70% { box-shadow: 0 0 0 10px rgba(59, 130, 246, 0); }
    100% { box-shadow: 0 0 0 0 rgba(59, 130, 246, 0); }
}

.play-section {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.giant-btn {
    font-size: 1.5rem;
    padding: 1.5rem 3rem;
    border-radius: 100px;
    background: linear-gradient(135deg, var(--success), #059669);
    border: none;
    box-shadow: 0 10px 20px rgba(16, 185, 129, 0.3);
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.giant-btn:hover {
    transform: scale(1.05) translateY(-5px);
    box-shadow: 0 15px 25px rgba(16, 185, 129, 0.5);
}

#dialogue-box {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    width: 80%;
    max-width: 600px;
    text-align: center;
    font-size: 1.2rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    border-left: 4px solid var(--accent);
}

.mobile-controls {
    position: absolute;
    bottom: 2rem;
    right: 2rem;
    pointer-events: auto;
}

.dpad {
    display: grid;
    grid-template-columns: repeat(3, 60px);
    grid-template-rows: repeat(3, 60px);
    gap: 10px;
}

.dpad-btn {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(5px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    color: white;
    font-size: 1.5rem;
    display: flex;
    justify-content: center;
    align-items: center;
}

.dpad-btn:active {
    background: rgba(255, 255, 255, 0.3);
}

.up { grid-column: 2; grid-row: 1; }
.left { grid-column: 1; grid-row: 2; }
.right { grid-column: 3; grid-row: 2; }
.down { grid-column: 2; grid-row: 3; }

.hidden { display: none !important; }

/* Level Catalog Styling */
.catalog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
    gap: 1rem;
    max-height: 250px;
    overflow-y: auto;
    padding: 1rem;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 12px;
}

.catalog-grid::-webkit-scrollbar {
    width: 8px;
}

.catalog-grid::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 4px;
}

.catalog-grid::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 4px;
}

.catalog-grid::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.4);
}

.catalog-btn {
    padding: 1rem;
    font-size: 1rem;
    font-weight: 800;
    transition: all 0.3s ease;
    display: flex;
    justify-content: center;
    align-items: center;
}

.catalog-btn.unlocked {
    background: rgba(16, 185, 129, 0.2);
    border-color: rgba(16, 185, 129, 0.5);
    color: #10b981;
}

.catalog-btn.unlocked:hover {
    transform: scale(1.05);
    box-shadow: 0 0 15px rgba(16, 185, 129, 0.4);
    background: rgba(16, 185, 129, 0.4);
}

.catalog-btn.locked {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.3);
    cursor: not-allowed;
}

.play-section {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.play-section h3 {
    color: #f8fafc;
    font-size: 1.5rem;
}

@media (min-width: 768px) {
    .mobile-controls {
        display: none;
    }
}