:root {
    --neon-cyan: #00f3ff;
    --neon-cyan-glow: rgba(0, 243, 255, 0.6);
    --neon-magenta: #ff007f;
    --neon-magenta-glow: rgba(255, 0, 127, 0.6);
    --neon-yellow: #ffdf00;
    --neon-yellow-glow: rgba(255, 223, 0, 0.6);
    --neon-red: #ff2a2a;
    --neon-red-glow: rgba(255, 42, 42, 0.6);
    --neon-green: #39ff14;
    --neon-green-glow: rgba(57, 255, 20, 0.6);
    
    --bg-dark: #040408;
    --bg-panel: rgba(10, 10, 20, 0.75);
    --text-white: #f5f5fa;
    --text-grey: #8a8a9a;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    user-select: none;
    -webkit-user-select: none;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-white);
    font-family: 'Inter', sans-serif;
    overflow: hidden;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

#app-container {
    position: relative;
    width: 100%;
    height: 100%;
    max-width: 600px;
    max-height: 800px;
    aspect-ratio: 3 / 4;
    display: flex;
    justify-content: center;
    align-items: center;
    border: 3px solid rgba(0, 243, 255, 0.15);
    box-shadow: 0 0 40px rgba(0, 243, 255, 0.1);
    background-color: #000;
    overflow: hidden;
}

canvas {
    width: 100%;
    height: 100%;
    display: block;
    image-rendering: pixelated;
}

/* CRT Scanline & Flicker Effect */
.crt-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(rgba(18, 16, 16, 0) 50%, rgba(0, 0, 0, 0.25) 50%);
    background-size: 100% 4px;
    z-index: 10;
    pointer-events: none;
    opacity: 0.85;
}

.crt-overlay::after {
    content: " ";
    display: block;
    position: absolute;
    top: 0; left: 0; bottom: 0; right: 0;
    background: radial-gradient(circle, rgba(18, 16, 16, 0) 60%, rgba(0, 0, 0, 0.6) 100%);
    opacity: 0.6;
}

/* Overlay Base (Menus and Screens) */
.overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.4s ease, visibility 0.4s ease;
    z-index: 5;
}

.overlay.active {
    opacity: 1;
    visibility: visible;
}

/* Glassmorphism Panel */
.glassmorphism {
    background: var(--bg-panel);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.05);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6);
    border-radius: 16px;
    padding: 2.5rem 2rem;
    width: 85%;
    max-width: 480px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    transform: translateY(20px);
    transition: transform 0.4s cubic-bezier(0.18, 0.89, 0.32, 1.28);
}

.overlay.active .glassmorphism {
    transform: translateY(0);
}

/* Typography & Neon Glows */
h1, h2, h3 {
    font-family: 'Orbitron', sans-serif;
    letter-spacing: 2px;
}

.game-logo {
    margin-bottom: 1.5rem;
    line-height: 1.1;
}

.game-logo h1 {
    font-size: 3rem;
    font-weight: 900;
}

.game-logo .subtitle {
    font-size: 2.2rem;
    margin-top: -5px;
}

.neon-text-magenta {
    color: var(--neon-magenta);
    text-shadow: 0 0 5px var(--neon-magenta), 0 0 15px var(--neon-magenta-glow), 0 0 30px var(--neon-magenta-glow);
}

.neon-text-cyan {
    color: var(--neon-cyan);
    text-shadow: 0 0 5px var(--neon-cyan), 0 0 15px var(--neon-cyan-glow), 0 0 30px var(--neon-cyan-glow);
}

.neon-text-yellow {
    color: var(--neon-yellow);
    text-shadow: 0 0 5px var(--neon-yellow), 0 0 15px var(--neon-yellow-glow);
}

.neon-text-red {
    color: var(--neon-red);
    text-shadow: 0 0 5px var(--neon-red), 0 0 15px var(--neon-red-glow), 0 0 30px var(--neon-red-glow);
}

.neon-text-white {
    color: var(--text-white);
    text-shadow: 0 0 5px rgba(255, 255, 255, 0.8);
}

.neon-text-grey {
    color: var(--text-grey);
    text-shadow: 0 0 2px rgba(138, 138, 154, 0.5);
}

.game-tagline {
    font-size: 0.95rem;
    color: var(--text-grey);
    line-height: 1.5;
    margin-bottom: 2rem;
}

/* Buttons */
.menu-actions {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    width: 100%;
    margin-bottom: 2rem;
}

.btn {
    position: relative;
    padding: 1rem 2rem;
    font-family: 'Orbitron', sans-serif;
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: 2px;
    background: transparent;
    border: 2px solid transparent;
    border-radius: 8px;
    cursor: pointer;
    overflow: hidden;
    transition: all 0.3s ease;
    width: 100%;
    color: var(--text-white);
}

.btn-text {
    position: relative;
    z-index: 2;
}

.btn-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 120%;
    height: 0;
    padding-bottom: 120%;
    border-radius: 50%;
    transform: translate(-50%, -50%) scale(0);
    transition: transform 0.5s ease-out, opacity 0.5s ease-out;
    opacity: 0;
    pointer-events: none;
    z-index: 1;
}

/* Cyan Button */
.btn-cyan {
    border-color: var(--neon-cyan);
    box-shadow: 0 0 10px rgba(0, 243, 255, 0.2);
}

.btn-cyan .btn-glow {
    background: radial-gradient(circle, var(--neon-cyan-glow) 0%, transparent 70%);
}

.btn-cyan:hover {
    color: #000;
    border-color: var(--neon-cyan);
    box-shadow: 0 0 20px var(--neon-cyan), 0 0 40px var(--neon-cyan-glow);
    font-weight: 900;
}

.btn-cyan:hover .btn-glow {
    transform: translate(-50%, -50%) scale(1);
    opacity: 0.8;
}

/* Magenta Button */
.btn-magenta {
    border-color: var(--neon-magenta);
    box-shadow: 0 0 10px rgba(255, 0, 127, 0.2);
}

.btn-magenta .btn-glow {
    background: radial-gradient(circle, var(--neon-magenta-glow) 0%, transparent 70%);
}

.btn-magenta:hover {
    color: #000;
    border-color: var(--neon-magenta);
    box-shadow: 0 0 20px var(--neon-magenta), 0 0 40px var(--neon-magenta-glow);
    font-weight: 900;
}

.btn-magenta:hover .btn-glow {
    transform: translate(-50%, -50%) scale(1);
    opacity: 0.8;
}

.btn:active {
    transform: scale(0.97);
}

.btn-small {
    padding: 0.75rem 1.5rem;
    font-size: 0.85rem;
    width: auto;
    min-width: 180px;
}

/* How to Play Keyboard keycaps */
.how-to-play {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 1.5rem;
    width: 100%;
    text-align: left;
}

.how-to-play h3 {
    font-size: 0.85rem;
    color: var(--text-white);
    margin-bottom: 0.8rem;
    text-align: center;
}

.controls-grid {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.control-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.85rem;
    color: var(--text-grey);
}

.key {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 4px;
    padding: 0.2rem 0.5rem;
    font-family: monospace;
    font-weight: bold;
    color: var(--neon-cyan);
    box-shadow: 0 2px 0 rgba(255, 255, 255, 0.1), 0 0 5px rgba(0, 243, 255, 0.2);
}

.wide-key {
    padding: 0.2rem 1.5rem;
}

.control-desc {
    flex-grow: 1;
}

/* HUD LAYER */
.hud-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    padding: 1.5rem;
    display: flex;
    justify-content: space-between;
    pointer-events: none;
    z-index: 4;
    font-family: 'Orbitron', sans-serif;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease;
}

.hud-layer.active {
    opacity: 1;
    visibility: visible;
}

.hud-stat {
    display: flex;
    flex-direction: column;
    margin-bottom: 0.75rem;
}

.hud-label {
    font-size: 0.65rem;
    color: var(--text-grey);
    letter-spacing: 1px;
    margin-bottom: 0.2rem;
}

.hud-value {
    font-size: 1.25rem;
    font-weight: 700;
}

.hud-right {
    text-align: right;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

.lives-container {
    display: flex;
    gap: 0.4rem;
    height: 1.5rem;
    align-items: center;
}

.lives-icon {
    width: 14px;
    height: 18px;
    background-color: var(--neon-magenta);
    clip-path: polygon(50% 0%, 0% 100%, 50% 80%, 100% 100%);
    filter: drop-shadow(0 0 3px var(--neon-magenta-glow));
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.lives-icon.lost {
    opacity: 0.2;
    transform: scale(0.8);
}

.shield-indicator-container {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.shield-bar {
    width: 40px;
    height: 8px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 2px;
    position: relative;
    overflow: hidden;
}

.shield-bar.active::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--neon-cyan);
    box-shadow: 0 0 8px var(--neon-cyan);
    animation: pulseShield 1.5s infinite alternate;
}

.shield-status {
    font-size: 0.85rem;
    font-weight: bold;
}

/* HIGH SCORE SCREEN */
.scores-table-container {
    width: 100%;
    margin-bottom: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    overflow: hidden;
}

#scores-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
    text-align: left;
}

#scores-table th {
    background-color: rgba(255, 255, 255, 0.05);
    padding: 0.8rem;
    color: var(--text-white);
    font-family: 'Orbitron', sans-serif;
    font-size: 0.75rem;
    letter-spacing: 1px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

#scores-table td {
    padding: 0.8rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    font-family: 'Inter', sans-serif;
}

#scores-table tr:last-child td {
    border-bottom: none;
}

#scores-table tr:nth-child(even) {
    background-color: rgba(255, 255, 255, 0.02);
}

#scores-table tr.top-score td {
    color: var(--neon-cyan);
    font-weight: bold;
    text-shadow: 0 0 5px var(--neon-cyan-glow);
}

#scores-table tr.user-score td {
    background-color: rgba(0, 243, 255, 0.1);
}

/* GAME OVER SCREEN */
.stats-summary {
    display: flex;
    gap: 1.5rem;
    margin: 1.5rem 0;
    width: 100%;
}

.summary-item {
    flex: 1;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.summary-label {
    font-size: 0.65rem;
    color: var(--text-grey);
    letter-spacing: 1px;
}

.summary-value {
    font-size: 1.4rem;
    font-family: 'Orbitron', sans-serif;
    font-weight: bold;
}

.new-record-box {
    width: 100%;
    margin-bottom: 1.5rem;
    padding: 1rem;
    border: 1px dashed var(--neon-yellow);
    border-radius: 8px;
    background-color: rgba(255, 223, 0, 0.05);
}

.new-record-box h3 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.new-record-box p {
    font-size: 0.8rem;
    color: var(--text-grey);
    margin-bottom: 0.75rem;
}

#pilot-initials {
    width: 120px;
    padding: 0.5rem;
    background-color: rgba(0, 0, 0, 0.5);
    border: 2px solid var(--neon-yellow);
    border-radius: 4px;
    color: var(--neon-yellow);
    font-family: 'Orbitron', sans-serif;
    font-size: 1.5rem;
    text-align: center;
    letter-spacing: 3px;
    text-transform: uppercase;
    outline: none;
    box-shadow: 0 0 10px var(--neon-yellow-glow);
}

#pilot-initials:focus {
    border-color: var(--text-white);
    box-shadow: 0 0 15px rgba(255, 255, 255, 0.5);
}

.hidden {
    display: none !important;
}

/* Animations */
@keyframes pulseShield {
    from {
        opacity: 0.7;
    }
    to {
        opacity: 1;
    }
}

.blink-text {
    animation: blink 1.2s infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

/* MUTE TOGGLE BUTTON STYLE */
.mute-toggle-btn {
    position: absolute;
    top: 1.25rem;
    right: 1.25rem;
    width: 38px;
    height: 38px;
    background: var(--bg-panel);
    border: 1.5px solid rgba(0, 243, 255, 0.3);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-radius: 50%;
    color: var(--text-white);
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    z-index: 15; /* Exibe acima de tudo, inclusive CRT lines */
    transition: all 0.3s cubic-bezier(0.18, 0.89, 0.32, 1.28);
    font-size: 1.1rem;
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.6), 0 0 5px var(--neon-cyan-glow);
}

.mute-toggle-btn:hover {
    border-color: var(--neon-cyan);
    box-shadow: 0 0 15px var(--neon-cyan), 0 0 5px var(--neon-cyan-glow);
    transform: scale(1.1);
}

.mute-toggle-btn:active {
    transform: scale(0.92);
}

.mute-toggle-btn.muted {
    border-color: var(--neon-magenta);
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.6), 0 0 5px var(--neon-magenta-glow);
    color: var(--text-grey);
}

.mute-toggle-btn.muted:hover {
    border-color: var(--neon-magenta);
    box-shadow: 0 0 15px var(--neon-magenta), 0 0 5px var(--neon-magenta-glow);
}