:root {
    --bg:           #050010;
    --bg-deep:      #000000;
    --bg-panel:     #0d0420;
    --pink:         #FF006E;
    --cyan:         #00F5D4;
    --yellow:       #FFD60A;
    --magenta:      #C200FB;
    --lime:         #B9FF66;
    --white:        #FFFFFF;
    --dim:          #8A82A8;
    --font-pixel:   'Press Start 2P', 'Courier New', monospace;
    --font-crt:     'VT323', 'Courier New', monospace;
}

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

html, body {
    background: var(--bg-deep);
    color: var(--white);
    font-family: var(--font-crt);
    font-size: 22px;
    height: 100%;
    overflow: hidden;
    image-rendering: pixelated;
}

button {
    font-family: inherit;
    cursor: pointer;
    background: none;
    border: none;
    color: inherit;
}

::selection {
    background: var(--pink);
    color: var(--white);
}

/* CRT scanlines overlay (purely visual) */
.scanlines {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 9999;
    background: repeating-linear-gradient(
        to bottom,
        transparent 0,
        transparent 2px,
        rgba(0, 0, 0, 0.30) 3px,
        rgba(0, 0, 0, 0.30) 4px
    );
    mix-blend-mode: multiply;
}

#gameContainer {
    width: 100%;
    height: 100vh;
    position: relative;
}

#gameCanvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    display: block;
    image-rendering: auto;
}

/* ====== SCREENS ====== */
.screen {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    background:
        radial-gradient(ellipse at center, rgba(255, 0, 110, 0.08) 0%, transparent 60%),
        var(--bg);
}

.screen::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(1px 1px at 60px 80px, var(--white), transparent),
        radial-gradient(1px 1px at 160px 220px, var(--cyan), transparent),
        radial-gradient(1px 1px at 280px 100px, var(--white), transparent),
        radial-gradient(1px 1px at 360px 300px, var(--pink), transparent);
    background-size: 420px 360px;
    background-repeat: repeat;
    opacity: 0.7;
    pointer-events: none;
}

#customizationScreen {
    background: var(--bg);
}

/* ====== LOADING ====== */
.loading-content {
    text-align: center;
    max-width: 540px;
    position: relative;
    z-index: 1;
}

.loading-title {
    font-family: var(--font-pixel);
    font-size: clamp(24px, 4vw, 42px);
    color: var(--pink);
    text-shadow: 4px 4px 0 var(--bg-deep), 8px 8px 0 var(--cyan);
    letter-spacing: 3px;
    margin-bottom: 16px;
}

.loading-subtitle {
    font-family: var(--font-pixel);
    color: var(--yellow);
    font-size: 12px;
    letter-spacing: 4px;
    margin-bottom: 36px;
}

.loading-bar {
    width: 100%;
    height: 14px;
    background: var(--bg-panel);
    border: 3px solid var(--cyan);
    box-shadow: 4px 4px 0 var(--bg-deep);
    overflow: hidden;
    margin-bottom: 16px;
}

.loading-progress {
    height: 100%;
    background: var(--pink);
    width: 0;
    transition: width 0.2s steps(8);
}

.loading-text {
    font-family: var(--font-pixel);
    color: var(--cyan);
    font-size: 10px;
    letter-spacing: 2px;
    animation: blink 1s steps(2) infinite;
}

@keyframes blink {
    50% { opacity: 0; }
}

/* ====== MAIN MENU ====== */
.menu-content {
    text-align: center;
    max-width: 640px;
    position: relative;
    z-index: 1;
}

.game-title {
    margin-bottom: 56px;
}

.title-main {
    display: block;
    font-family: var(--font-pixel);
    font-size: clamp(28px, 5vw, 56px);
    color: var(--pink);
    text-shadow: 4px 4px 0 var(--bg-deep), 8px 8px 0 var(--magenta);
    letter-spacing: 3px;
    margin-bottom: 12px;
}

.title-sub {
    display: block;
    font-family: var(--font-pixel);
    font-size: 14px;
    color: var(--yellow);
    letter-spacing: 4px;
}

.menu-actions {
    display: flex;
    flex-direction: column;
    gap: 18px;
    align-items: center;
}

.play-btn {
    font-family: var(--font-pixel);
    font-size: 16px;
    letter-spacing: 2px;
    background: var(--yellow);
    color: var(--bg-deep);
    padding: 22px 48px;
    border: 3px solid var(--bg-deep);
    box-shadow: 4px 4px 0 var(--bg-deep), 8px 8px 0 var(--pink);
    transition: transform 0.05s, box-shadow 0.05s, background 0.05s;
}

.play-btn:hover {
    background: var(--cyan);
    box-shadow: 4px 4px 0 var(--bg-deep), 8px 8px 0 var(--magenta);
}

.play-btn:active {
    transform: translate(6px, 6px);
    box-shadow: none;
}

.btn-text {
    display: block;
    font-size: 18px;
    margin-bottom: 8px;
}

.btn-subtitle {
    display: block;
    font-size: 9px;
    letter-spacing: 2px;
    color: var(--bg-deep);
}

.back-btn {
    font-family: var(--font-pixel);
    font-size: 11px;
    letter-spacing: 2px;
    background: var(--bg-panel);
    color: var(--cyan);
    border: 3px solid var(--cyan);
    padding: 14px 28px;
    box-shadow: 3px 3px 0 var(--bg-deep);
    transition: transform 0.05s, box-shadow 0.05s, background 0.05s, color 0.05s;
}

.back-btn:hover {
    background: var(--magenta);
    color: var(--white);
    border-color: var(--magenta);
}

.back-btn:active {
    transform: translate(3px, 3px);
    box-shadow: none;
}

/* ====== CUSTOMIZATION ====== */
.customization-container {
    display: flex;
    gap: 28px;
    width: 92%;
    max-width: 1300px;
    height: 90vh;
    position: relative;
    z-index: 1;
}

.customization-panel {
    flex: 1;
    background: var(--bg-panel);
    border: 3px solid var(--cyan);
    box-shadow: 4px 4px 0 var(--bg-deep), 8px 8px 0 var(--pink);
    padding: 28px;
    overflow-y: auto;
}

.customization-panel h2 {
    font-family: var(--font-pixel);
    font-size: 18px;
    color: var(--yellow);
    letter-spacing: 2px;
    margin-bottom: 28px;
    text-shadow: 3px 3px 0 var(--bg-deep);
}

.input-group {
    margin-bottom: 28px;
}

.input-group label,
.color-group label,
.track-section > label {
    display: block;
    margin-bottom: 12px;
    font-family: var(--font-pixel);
    font-size: 10px;
    color: var(--cyan);
    letter-spacing: 2px;
}

.input-group input[type="text"] {
    width: 100%;
    padding: 14px 18px;
    background: var(--bg-deep);
    border: 3px solid var(--white);
    color: var(--white);
    font-family: var(--font-crt);
    font-size: 24px;
    letter-spacing: 2px;
    box-shadow: inset 0 0 0 1px var(--bg-deep), 4px 4px 0 var(--bg-deep);
}

.input-group input[type="text"]:focus {
    outline: none;
    border-color: var(--yellow);
    box-shadow: inset 0 0 0 1px var(--bg-deep), 4px 4px 0 var(--magenta);
}

.input-group input.input-error {
    border-color: var(--pink);
    animation: shakeX 0.4s steps(4);
}

@keyframes shakeX {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-6px); }
    75% { transform: translateX(6px); }
}

.input-group input[type="text"]::placeholder {
    color: var(--dim);
    text-transform: uppercase;
}

/* Color section */
.color-section { margin-bottom: 28px; }

.color-picker {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-wrap: wrap;
}

.color-picker input[type="color"] {
    width: 56px;
    height: 44px;
    border: 3px solid var(--white);
    background: var(--bg-deep);
    box-shadow: 3px 3px 0 var(--bg-deep);
    cursor: pointer;
    padding: 2px;
}

.color-presets {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.color-btn {
    width: 32px;
    height: 32px;
    border: 3px solid var(--white);
    box-shadow: 3px 3px 0 var(--bg-deep);
    transition: transform 0.05s, box-shadow 0.05s;
}

.color-btn:hover {
    border-color: var(--yellow);
}

.color-btn:active {
    transform: translate(3px, 3px);
    box-shadow: none;
}

/* Track section */
.track-section { margin-bottom: 28px; }

.track-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

.track-card {
    background: var(--bg-deep);
    border: 3px solid var(--white);
    color: var(--white);
    padding: 14px;
    display: flex;
    align-items: center;
    gap: 14px;
    text-align: left;
    font-family: var(--font-pixel);
    font-size: 9px;
    letter-spacing: 1.5px;
    box-shadow: 3px 3px 0 var(--bg-deep);
    transition: transform 0.05s, box-shadow 0.05s, border-color 0.05s, background 0.05s;
}

.track-card:hover {
    border-color: var(--cyan);
    background: var(--bg-panel);
}

.track-card.selected {
    border-color: var(--pink);
    background: var(--bg-panel);
    box-shadow: 3px 3px 0 var(--bg-deep), 6px 6px 0 var(--pink);
}

.track-icon {
    width: 40px;
    height: 40px;
    background: var(--bg-panel);
    border: 2px solid var(--cyan);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    flex-shrink: 0;
}

/* Action buttons */
.action-buttons {
    display: flex;
    gap: 14px;
}

.start-race-btn {
    flex: 1;
    font-family: var(--font-pixel);
    font-size: 14px;
    letter-spacing: 2px;
    background: var(--yellow);
    color: var(--bg-deep);
    border: 3px solid var(--bg-deep);
    padding: 18px;
    box-shadow: 4px 4px 0 var(--bg-deep), 8px 8px 0 var(--pink);
    transition: transform 0.05s, box-shadow 0.05s, background 0.05s;
}

.start-race-btn:hover {
    background: var(--cyan);
    box-shadow: 4px 4px 0 var(--bg-deep), 8px 8px 0 var(--magenta);
}

.start-race-btn:active {
    transform: translate(6px, 6px);
    box-shadow: none;
}

/* Preview panel */
.preview-panel {
    width: 420px;
    background: var(--bg-panel);
    border: 3px solid var(--pink);
    box-shadow: 4px 4px 0 var(--bg-deep), 8px 8px 0 var(--cyan);
    padding: 28px;
    display: flex;
    flex-direction: column;
}

.preview-panel h3 {
    font-family: var(--font-pixel);
    font-size: 14px;
    color: var(--cyan);
    letter-spacing: 2px;
    margin-bottom: 16px;
}

#previewContainer {
    width: 100%;
    flex: 1;
    min-height: 280px;
    background: var(--bg-deep);
    border: 3px solid var(--cyan);
    overflow: hidden;
    position: relative;
}

#previewCanvas {
    width: 100%;
    height: 100%;
    display: block;
}

.preview-hint {
    margin-top: 16px;
    font-family: var(--font-pixel);
    font-size: 8px;
    letter-spacing: 2px;
    color: var(--dim);
    text-align: center;
    line-height: 1.6;
}

/* ====== RACING HUD ====== */
#racingHUD {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 5;
    font-family: var(--font-pixel);
}

.hud-top {
    position: absolute;
    top: 16px;
    left: 16px;
    right: 16px;
    display: flex;
    align-items: stretch;
    gap: 8px;
    pointer-events: auto;
}

.hud-cell {
    background: var(--bg-deep);
    border: 3px solid var(--cyan);
    box-shadow: 3px 3px 0 var(--pink);
    padding: 10px 14px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.hud-track { flex: 1; }

.hud-label {
    font-size: 9px;
    color: var(--yellow);
    letter-spacing: 2px;
}

.hud-value {
    font-size: 16px;
    color: var(--white);
    letter-spacing: 1px;
}

.hud-suffix {
    font-size: 10px;
    color: var(--cyan);
    margin-left: 2px;
}

.hud-exit-btn {
    background: var(--pink);
    color: var(--bg-deep);
    border: 3px solid var(--bg-deep);
    box-shadow: 3px 3px 0 var(--cyan);
    font-family: var(--font-pixel);
    font-size: 11px;
    letter-spacing: 2px;
    padding: 10px 18px;
    transition: transform 0.05s, box-shadow 0.05s, background 0.05s;
}

.hud-exit-btn:hover {
    background: var(--yellow);
    box-shadow: 3px 3px 0 var(--magenta);
}

.hud-exit-btn:active {
    transform: translate(3px, 3px);
    box-shadow: none;
}

.hud-bottom {
    position: absolute;
    bottom: 24px;
    right: 24px;
    pointer-events: auto;
}

.speedometer {
    background: var(--bg-deep);
    border: 3px solid var(--yellow);
    box-shadow: 3px 3px 0 var(--pink);
    padding: 14px 22px;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 4px;
}

.speedometer .hud-label {
    color: var(--yellow);
    font-size: 9px;
}

#speed {
    font-family: var(--font-pixel);
    font-size: 32px;
    color: var(--pink);
    text-shadow: 2px 2px 0 var(--bg-deep);
}

/* ====== COUNTDOWN ====== */
.countdown {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 8;
    pointer-events: none;
    font-family: var(--font-pixel);
    font-size: clamp(80px, 18vw, 200px);
    color: var(--yellow);
    text-shadow:
        6px 6px 0 var(--bg-deep),
        12px 12px 0 var(--pink),
        18px 18px 0 var(--cyan);
    letter-spacing: 8px;
    animation: countdownPulse 0.8s ease-out;
}

@keyframes countdownPulse {
    0%   { transform: scale(0.5); opacity: 0; }
    30%  { transform: scale(1.2); opacity: 1; }
    100% { transform: scale(1); opacity: 1; }
}

/* ====== FINISH SCREEN ====== */
.finish-screen {
    background: rgba(5, 0, 16, 0.92);
}

.finish-content {
    background: var(--bg-panel);
    border: 4px solid var(--pink);
    box-shadow: 6px 6px 0 var(--bg-deep), 12px 12px 0 var(--cyan);
    padding: 48px;
    text-align: center;
    max-width: 540px;
    width: 90%;
    position: relative;
    z-index: 1;
}

.finish-title {
    font-family: var(--font-pixel);
    font-size: clamp(20px, 4vw, 38px);
    color: var(--yellow);
    text-shadow: 4px 4px 0 var(--bg-deep), 8px 8px 0 var(--magenta);
    letter-spacing: 3px;
    margin-bottom: 32px;
}

.finish-position {
    margin-bottom: 36px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.finish-position-label {
    font-family: var(--font-pixel);
    font-size: 11px;
    letter-spacing: 2px;
    color: var(--cyan);
}

.finish-position-value {
    font-family: var(--font-pixel);
    font-size: clamp(40px, 8vw, 72px);
    color: var(--pink);
    text-shadow: 4px 4px 0 var(--bg-deep), 8px 8px 0 var(--cyan);
    letter-spacing: 4px;
}

.finish-stats {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-bottom: 32px;
    flex-wrap: wrap;
}

.finish-stat {
    background: var(--bg-deep);
    border: 3px solid var(--cyan);
    box-shadow: 3px 3px 0 var(--pink);
    padding: 14px 20px;
    min-width: 160px;
}

.finish-stat-label {
    display: block;
    font-family: var(--font-pixel);
    font-size: 9px;
    letter-spacing: 2px;
    color: var(--yellow);
    margin-bottom: 6px;
}

.finish-stat-value {
    display: block;
    font-family: var(--font-pixel);
    font-size: 16px;
    color: var(--white);
    letter-spacing: 1px;
}

.finish-actions {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

/* ====== RESPONSIVE ====== */
@media (max-width: 900px) {
    .customization-container {
        flex-direction: column;
        height: auto;
        max-height: 92vh;
        overflow-y: auto;
    }
    .preview-panel {
        width: 100%;
        min-height: 280px;
    }
    .track-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    html, body { font-size: 18px; }
    .title-main { font-size: 22px; }
    .title-sub { font-size: 10px; }
    .hud-top { flex-wrap: wrap; }
    .hud-cell { padding: 8px 10px; }
    .hud-label { font-size: 7px; }
    .hud-value { font-size: 12px; }
    .hud-exit-btn { font-size: 9px; padding: 8px 14px; }
    #speed { font-size: 22px; }
    .finish-content { padding: 28px 20px; }
}

/* Hide scrollbars on customization panel */
.customization-panel::-webkit-scrollbar { width: 8px; }
.customization-panel::-webkit-scrollbar-track { background: var(--bg-deep); }
.customization-panel::-webkit-scrollbar-thumb { background: var(--pink); }