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

body {
    overflow: hidden; /* Prevent scrolling */
    font-family: 'Outfit', sans-serif;
    background-color: #000;
}

#game-container {
    position: relative;
    width: 100vw;
    height: 100vh;
}

canvas {
    display: block;
    width: 100%;
    height: 100%;
}

#ui-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none; /* Let clicks pass through to canvas if needed */
    z-index: 10;
}

.stats-container {
    position: absolute;
    top: 20px;
    left: 20px;
    display: flex;
    gap: 20px;
}

.stat-box {
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    padding: 10px 20px;
    display: flex;
    flex-direction: column;
    color: white;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
}

.coins-box {
    background: rgba(50, 40, 0, 0.5);
    border-color: rgba(255, 215, 0, 0.4);
}

.total-coins-box {
    background: rgba(0, 50, 0, 0.5);
    border-color: rgba(0, 255, 0, 0.4);
}

.stat-label {
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 1px;
    opacity: 0.8;
}

.stat-value {
    font-size: 1.8rem;
    font-weight: 900;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
    color: #fff;
}

.coins-box .stat-value {
    color: #ffd700;
}

.total-coins-box .stat-value {
    color: #00ff00;
}

.screen {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(5px);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: white;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.screen.active {
    opacity: 1;
    pointer-events: auto;
}

h1 {
    font-size: 5rem;
    font-weight: 900;
    text-transform: uppercase;
    background: linear-gradient(to right, #ff9933, #ffffff, #138808); /* Indian flag colors */
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    filter: drop-shadow(0 4px 10px rgba(255, 153, 51, 0.4));
    margin-bottom: 20px;
    text-align: center;
}

h2 {
    font-size: 4rem;
    color: #ff3333;
    margin-bottom: 20px;
    text-shadow: 0 4px 10px rgba(255, 51, 51, 0.4);
}

p {
    font-size: 1.2rem;
    opacity: 0.9;
}

.final-stats {
    font-size: 1.5rem;
    margin-bottom: 30px;
    text-align: center;
    background: rgba(255,255,255,0.1);
    padding: 20px 40px;
    border-radius: 15px;
    border: 1px solid rgba(255,255,255,0.2);
}

.final-stats p {
    margin: 10px 0;
    font-size: 1.4rem;
    font-weight: bold;
}

#final-coins {
    color: #ffd700;
}

/* --- Buttons --- */
.btn {
    padding: 15px 40px;
    font-size: 1.5rem;
    font-family: 'Outfit', sans-serif;
    font-weight: 900;
    color: #fff;
    background: linear-gradient(45deg, #ff9933, #e67e22); /* Orange/Saffron gradient */
    border: none;
    border-radius: 50px;
    cursor: pointer;
    box-shadow: 0 6px 15px rgba(230, 126, 34, 0.4);
    transition: transform 0.2s, box-shadow 0.2s;
}

button:active {
    transform: translateY(1px);
}

.shop-btn {
    background: linear-gradient(45deg, #2ecc71, #27ae60);
    box-shadow: 0 6px 15px rgba(46, 204, 113, 0.4);
    margin-top: 15px;
    font-size: 1.2rem;
}

.shop-btn:hover {
    box-shadow: 0 10px 20px rgba(46, 204, 113, 0.6);
}

/* --- Shop Screen --- */
.hidden {
    display: none !important;
}

#shop-screen {
    background: rgba(10, 15, 20, 0.95);
}

.shop-items {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-top: 30px;
    width: 90%;
    max-width: 500px;
}

.shop-item {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 15px;
    padding: 15px 20px;
    text-align: left;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.shop-item h3 {
    font-size: 1.2rem;
    color: #f1c40f;
    margin: 0;
}

.shop-item p {
    font-size: 0.9rem;
    margin: 0;
    opacity: 0.8;
}

.upgrade-bar {
    width: 100%;
    height: 10px;
    background: rgba(0, 0, 0, 0.5);
    border-radius: 5px;
    overflow: hidden;
}

.upgrade-bar .fill {
    height: 100%;
    background: #2ecc71;
    width: 0%; /* Dynamic */
    transition: width 0.3s;
}

.buy-btn {
    padding: 8px 15px;
    font-size: 1rem;
    margin-top: 5px;
    align-self: flex-start;
}

.buy-btn:disabled {
    background: #555;
    color: #888;
    box-shadow: none;
    cursor: not-allowed;
    transform: none;
}

/* --- Active Powerups HUD --- */
#active-powerups {
    position: absolute;
    top: 100px;
    left: 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    pointer-events: none;
}

.powerup-indicator {
    background: rgba(0, 0, 0, 0.6);
    border: 2px solid;
    padding: 10px 15px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 150px;
    animation: slideIn 0.3s ease-out;
}

.powerup-indicator.magnet { border-color: #3498db; color: #3498db; }
.powerup-indicator.multiplier { border-color: #f1c40f; color: #f1c40f; }
.powerup-indicator.jetpack { border-color: #e74c3c; color: #e74c3c; }

.powerup-bar-bg {
    flex-grow: 1;
    height: 6px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 3px;
    overflow: hidden;
}

.powerup-bar-fill {
    height: 100%;
    width: 100%;
    background: currentColor;
    transform-origin: left;
}

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