:root {
    --neon-pink: #ff00ff;
    --neon-blue: #00ffff;
    --neon-purple: #9d00ff;
    --dark-bg: #0c0c2c;
    --selected-color: #ff00ff; /* Default color */
    --bg-color: #1a0933;
}

body {
    margin: 0;
    padding: 0;
    background-color: var(--bg-color);
    color: white;
    font-family: Arial, sans-serif;
    min-height: 100vh;
    background: linear-gradient(180deg, var(--bg-color) 0%, #000000 100%);
}

#intro-screen {
    width: 100%;
    min-height: 100vh;
    overflow-y: auto;
    position: relative;
    padding: 20px 0;
    box-sizing: border-box;
}

.intro-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
    position: relative;
}

.title {
    font-size: 3rem;
    text-align: center;
    color: var(--neon-pink);
    text-shadow: 0 0 10px var(--neon-pink);
    margin: 0;
    padding: 1rem 0;
}

.subtitle {
    text-align: center;
    color: #fff;
    font-size: 1rem;
    margin-bottom: 2rem;
}

.section-title {
    color: var(--neon-blue);
    text-align: center;
    font-size: 1.2rem;
    margin: 1.5rem 0;
    text-shadow: 0 0 5px var(--neon-blue);
}

.input-section {
    background: rgba(0, 0, 0, 0.3);
    padding: 1rem;
    border-radius: 4px;
    border: 1px solid var(--neon-blue);
    margin-bottom: 1.5rem;
}

.neon-input {
    width: 100%;
    background: rgba(0, 0, 0, 0.5);
    border: 1px solid var(--neon-pink);
    color: white;
    padding: 0.5rem;
    border-radius: 4px;
    margin-top: 0.5rem;
}

.color-options {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin: 1rem 0;
}

.color-option {
    width: 35px;
    height: 35px;
    border-radius: 50%;
    cursor: pointer;
    transition: transform 0.2s;
    border: none;
    box-shadow: 0 0 10px currentColor;
}

.color-option:hover {
    transform: scale(1.2);
    box-shadow: 0 0 15px currentColor;
}

.color-option.selected {
    border: 2px solid #fff;
    box-shadow: 0 0 15px currentColor;
}

.machine-options {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin: 1rem 0;
}

.machine-card {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--neon-blue);
    border-radius: 4px;
    padding: 1rem;
    width: 200px;
    text-align: center;
    transition: all 0.3s ease;
}

.machine-card.selected {
    border-color: var(--neon-pink);
    box-shadow: 0 0 15px var(--neon-pink);
}

.machine-icon {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.machine-name {
    color: var(--neon-blue);
    font-weight: bold;
    margin-bottom: 0.5rem;
}

.machine-desc {
    font-size: 0.8rem;
    color: #888;
    margin-bottom: 1rem;
}

.stats {
    text-align: left;
}

.stat {
    margin-bottom: 0.5rem;
}

.stat span {
    font-size: 0.8rem;
    color: var(--neon-pink);
}

.stat-bar {
    height: 4px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 2px;
    margin-top: 2px;
}

.stat-fill {
    height: 100%;
    background: var(--neon-blue);
    border-radius: 2px;
}

.graphics-section {
    text-align: center;
    margin: 2rem 0;
}

.neon-select {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--neon-blue);
    color: white;
    padding: 0.5rem 2rem;
    border-radius: 4px;
}

.player-info {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--neon-blue);
    padding: 1rem;
    border-radius: 4px;
    margin: 1rem 0;
    text-align: center;
}

.neon-text {
    color: var(--neon-pink);
}

.neon-text.orange {
    color: #FFA500;
}

.controls-guide {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--neon-blue);
    padding: 1rem;
    border-radius: 4px;
    margin: 1rem 0;
}

.controls-guide ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.controls-guide li {
    margin-bottom: 0.5rem;
    color: #888;
}

.key {
    color: var(--neon-blue);
    margin-right: 0.5rem;
}

.start-button {
    display: block;
    width: 200px;
    margin: 2rem auto;
    padding: 1rem;
    background: transparent;
    border: 2px solid var(--neon-pink);
    color: var(--neon-pink);
    font-size: 1.2rem;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.start-button:hover {
    background: var(--neon-pink);
    color: black;
    box-shadow: 0 0 20px var(--neon-pink);
}

/* Grid background effect */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        linear-gradient(transparent 0%, rgba(0, 0, 0, 0.5) 100%),
        linear-gradient(90deg, rgba(255, 0, 255, 0.1) 1px, transparent 1px),
        linear-gradient(rgba(255, 0, 255, 0.1) 1px, transparent 1px);
    background-size: 100% 100%, 40px 40px, 40px 40px;
    transform-origin: center;
    transform: perspective(500px) rotateX(60deg);
    pointer-events: none;
    z-index: -1;
}

.hidden {
    display: none;
}

.active {
    display: block;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .intro-container {
        padding: 1rem;
    }

    .neon-text {
        font-size: 2rem;
    }

    .input-group {
        flex-direction: column;
        align-items: flex-start;
    }

    .neon-input, .neon-select {
        max-width: 100%;
    }

    .color-btn {
        width: 35px;
        height: 35px;
    }

    /* Hide non-essential UI elements on mobile */
    #debug-panel, 
    #weapon-legend {
        display: none !important;
    }
    
    /* Adjust game stats for better visibility */
    #game-stats,
    #player-info,
    #weapon-info {
        background: rgba(0, 0, 0, 0.7);
        backdrop-filter: blur(5px);
        max-width: 180px;
    }
    
    #game-stats {
        top: 10px;
        right: 10px;
    }
    
    #player-info {
        top: 10px;
        left: 10px;
    }
    
    #weapon-info {
        top: 90px;
        left: 10px;
    }
    
    #speed-display {
        bottom: 190px;
        left: 10px;
        max-width: 180px;
    }
    
    #cooldown-container {
        bottom: 160px;
        left: 10px;
        max-width: 180px;
    }
    
    /* Make buttons bigger for touch */
    .audio-button {
        width: 50px;
        height: 50px;
        font-size: 20px;
    }
    
    /* Fix audio controls position to avoid overlap with mobile controls */
    #audio-controls {
        bottom: 100px;
        right: 10px;
    }
    
    /* Fix chat position */
    #chat-container {
        bottom: 100px;
        right: 10px;
        width: 200px;
        max-height: 150px;
    }
    
    /* Adjust cooldown info to be more visible */
    .cooldown-text {
        font-size: 12px;
    }
    
    /* Make sure mobile controls are visible */
    #mobile-controls {
        display: block;
    }
    
    /* Adjust powerup indicators */
    #powerup-indicators {
        bottom: 190px;
    }
}

/* Stats display */
.stats-display {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
    flex-wrap: wrap;
}

.stat-bar {
    flex: 1;
    min-width: 150px;
    background: rgba(0, 0, 0, 0.3);
    height: 10px;
    border-radius: 5px;
    overflow: hidden;
    position: relative;
}

.stat-fill {
    height: 100%;
    background: var(--selected-color);
    transition: width 0.3s ease;
}

.stat-label {
    font-size: 0.8rem;
    color: var(--neon-blue);
    margin-bottom: 0.3rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Vehicle preview area */
.vehicle-preview {
    position: relative;
    height: 300px;
    margin: 2rem 0;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--selected-color);
    border-radius: 4px;
    overflow: hidden;
}

.vehicle-preview canvas {
    width: 100% !important;
    height: 100% !important;
}

.vehicle-preview::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    box-shadow: inset 0 0 50px var(--selected-color);
    pointer-events: none;
}

/* For the truck options */
.truck-options {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin: 1rem 0;
}

.truck-option {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--neon-blue);
    border-radius: 4px;
    padding: 1rem;
    width: 200px;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
}

.truck-option.selected {
    border-color: var(--neon-pink);
    box-shadow: 0 0 15px var(--neon-pink);
}

/* For the color buttons */
.color-options {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin: 1rem 0;
}

.color-btn {
    width: 35px;
    height: 35px;
    border-radius: 50%;
    cursor: pointer;
    transition: transform 0.2s;
    border: none;
    box-shadow: 0 0 10px currentColor;
}

.color-btn:hover {
    transform: scale(1.2);
    box-shadow: 0 0 15px currentColor;
}

.color-btn.selected {
    border: 2px solid #fff;
    box-shadow: 0 0 15px currentColor;
}

/* Selected Options Display */
.selected-options {
    background: rgba(0, 0, 0, 0.7);
    border: 2px solid #ff00ff;
    border-radius: 10px;
    padding: 20px 30px;
    margin: 2rem auto;
    width: 90%;
    max-width: 500px;
    display: flex;
    flex-direction: column;
    gap: 15px;
    position: relative;
    box-shadow: 
        0 0 20px rgba(255, 0, 255, 0.3),
        inset 0 0 30px rgba(255, 0, 255, 0.1);
}

.selected-options::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(
        90deg,
        transparent,
        #ff00ff,
        transparent
    );
    animation: scanline 2s linear infinite;
}

.selected-options::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(
        90deg,
        transparent,
        #ff00ff,
        transparent
    );
    animation: scanline 2s linear infinite reverse;
}

.selected-option {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.2rem;
    letter-spacing: 1px;
    padding: 10px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 5px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.selected-option::before {
    content: attr(data-label);
    color: rgba(255, 255, 255, 0.8);
    text-shadow: 0 0 5px rgba(255, 255, 255, 0.5);
}

.selected-option span {
    font-weight: bold;
    margin-left: 10px;
    min-width: 120px;
    text-align: right;
}

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

/* Add a subtle pulse animation to the box */
@keyframes pulse {
    0% { box-shadow: 0 0 20px rgba(255, 0, 255, 0.3), inset 0 0 30px rgba(255, 0, 255, 0.1); }
    50% { box-shadow: 0 0 30px rgba(255, 0, 255, 0.5), inset 0 0 40px rgba(255, 0, 255, 0.2); }
    100% { box-shadow: 0 0 20px rgba(255, 0, 255, 0.3), inset 0 0 30px rgba(255, 0, 255, 0.1); }
}

/* Update the input field styling */
.nickname-input input {
    background-color: rgba(20, 0, 30, 0.7);
    color: #ff00ff;
    padding: 10px 15px;
    border: 1px solid #ff00ff;
    border-radius: 4px;
    font-size: 1rem;
    width: calc(100% - 32px);
    margin-top: 8px;
    outline: none;
    font-family: 'Orbitron', sans-serif;
    box-sizing: border-box;
    box-shadow: 0 0 10px rgba(255, 0, 255, 0.3);
    text-shadow: 0 0 5px rgba(255, 0, 255, 0.5);
    transition: all 0.3s ease;
}

.nickname-input input:focus {
    border-color: #00ffff;
    box-shadow: 0 0 15px rgba(0, 255, 255, 0.5);
    color: #00ffff;
    text-shadow: 0 0 5px rgba(0, 255, 255, 0.5);
}

.nickname-input input::placeholder {
    color: rgba(255, 0, 255, 0.5);
}

/* Graphics Quality Section */
.quality-settings {
    background-color: rgba(0, 0, 0, 0.5);
    padding: 20px;
    border-radius: 10px;
    margin: 2rem auto;
    border: 1px solid #00ffff;
    max-width: 600px;
    width: 90%;
    box-shadow: 0 0 20px rgba(0, 255, 255, 0.2);
    text-align: center;
}

.quality-settings label {
    color: #00ffff;
    font-size: 1.2rem;
    text-shadow: 0 0 8px #00ffff;
    margin-right: 15px;
    font-family: 'Orbitron', sans-serif;
}

.quality-settings select {
    background-color: rgba(20, 0, 30, 0.7);
    color: white;
    padding: 10px 20px;
    border: 1px solid #00ffff;
    border-radius: 4px;
    font-size: 1rem;
    outline: none;
    font-family: 'Orbitron', sans-serif;
    cursor: pointer;
    box-shadow: 0 0 10px rgba(0, 255, 255, 0.3);
    transition: all 0.3s ease;
}

.quality-settings select:hover {
    box-shadow: 0 0 15px rgba(0, 255, 255, 0.5);
}

.quality-settings select:focus {
    box-shadow: 0 0 20px rgba(0, 255, 255, 0.7);
}

/* How to Play Section */
.controls {
    background-color: rgba(0, 0, 0, 0.5);
    padding: 25px;
    border-radius: 10px;
    margin: 2rem auto;
    border: 1px solid #ff00ff;
    max-width: 600px;
    width: 90%;
    box-shadow: 0 0 20px rgba(255, 0, 255, 0.2);
}

.controls h2 {
    color: #ff00ff;
    text-align: center;
    font-size: 1.5rem;
    margin-top: 0;
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 2px;
    text-shadow: 0 0 8px #ff00ff;
    font-family: 'Orbitron', sans-serif;
}

.controls ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.controls li {
    margin-bottom: 12px;
    color: #fff;
    font-size: 1rem;
    line-height: 1.4;
    font-family: 'Orbitron', sans-serif;
}

.controls li strong {
    color: #00ffff;
    text-shadow: 0 0 5px #00ffff;
    margin-right: 8px;
}

/* Enter the Arena Button */
.enter-arena-container {
    text-align: center;
    margin: 2.5rem auto;
    padding: 20px;
    position: relative;
}

.enter-arena-button {
    background: linear-gradient(45deg, #ff00ff, #aa00ff);
    color: white;
    font-family: 'Orbitron', sans-serif;
    font-size: 1.5rem;
    font-weight: bold;
    padding: 18px 50px;
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 3px;
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
    box-shadow: 
        0 0 25px rgba(255, 0, 255, 0.6),
        0 0 40px rgba(255, 0, 255, 0.3),
        inset 0 0 15px rgba(255, 255, 255, 0.1);
}

.enter-arena-button:hover {
    transform: scale(1.05) translateY(-3px);
    box-shadow: 
        0 0 35px rgba(255, 0, 255, 0.8),
        0 0 50px rgba(255, 0, 255, 0.4),
        inset 0 0 20px rgba(255, 255, 255, 0.2);
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.8);
}

.enter-arena-button:active {
    transform: scale(0.98) translateY(0);
    box-shadow: 
        0 0 20px rgba(255, 0, 255, 0.5),
        inset 0 0 10px rgba(0, 0, 0, 0.3);
}

/* Add pulsing glow effect around the button */
.enter-arena-container::before,
.enter-arena-container::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: radial-gradient(
        circle,
        rgba(255, 0, 255, 0.3) 0%,
        transparent 70%
    );
    animation: pulse-glow 2s infinite alternate;
    z-index: -1;
}

.enter-arena-container::after {
    animation-delay: 1s;
}

@keyframes shine {
    0% {
        left: -200%;
    }
    20%, 100% {
        left: 200%;
    }
}

@keyframes pulse-glow {
    0% {
        width: 100%;
        height: 100%;
        opacity: 0.3;
    }
    100% {
        width: 150%;
        height: 150%;
        opacity: 0.1;
    }
}

@media (max-width: 600px) {
    .enter-arena-button {
        font-size: 1.2rem;
        padding: 15px 30px;
        width: 90%;
        max-width: 300px;
    }
}

/* Mobile Controls */
#mobile-controls {
    display: none;
    position: fixed;
    bottom: 20px;
    left: 20px;
    z-index: 1000;
    pointer-events: auto;
}

#direction-pad {
    position: relative;
    width: 150px;
    height: 150px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 50%;
    border: 2px solid #ff00ff;
    box-shadow: 0 0 20px rgba(255, 0, 255, 0.4);
}

.control-button {
    position: absolute;
    width: 50px;
    height: 50px;
    background: rgba(0, 0, 0, 0.6);
    border: 1px solid #ff00ff;
    color: #ff00ff;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 20px;
    cursor: pointer;
    touch-action: none;
}

.control-button.active {
    background: rgba(255, 0, 255, 0.3);
    box-shadow: 0 0 15px rgba(255, 0, 255, 0.7);
}

/* Action buttons for mobile */
#action-buttons {
    position: fixed;
    bottom: 20px;
    right: 20px;
    display: flex;
    gap: 20px;
}

.action-button {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.6);
    border: 2px solid #00ffff;
    color: #00ffff;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 24px;
    box-shadow: 0 0 20px rgba(0, 255, 255, 0.4);
    touch-action: none;
}

.action-button.active {
    background: rgba(0, 255, 255, 0.3);
    box-shadow: 0 0 20px rgba(0, 255, 255, 0.7);
}

#fire-button {
    background: rgba(255, 0, 0, 0.2);
    border-color: #ff3333;
    color: #ff3333;
    box-shadow: 0 0 20px rgba(255, 0, 0, 0.4);
}

#fire-button.active {
    background: rgba(255, 0, 0, 0.3);
    box-shadow: 0 0 20px rgba(255, 0, 0, 0.7);
}

#pad-up {
    top: 0;
    left: 50px;
    border-radius: 50% 50% 0 0;
}

#pad-down {
    bottom: 0;
    left: 50px;
    border-radius: 0 0 50% 50%;
}

#pad-left {
    top: 50px;
    left: 0;
    border-radius: 50% 0 0 50%;
}

#pad-right {
    top: 50px;
    right: 0;
    border-radius: 0 50% 50% 0;
}