:root {
    --bg-dark: #0d0221;
    --neon-pink: #f15bb5;
    --neon-cyan: #00f5d4;
    --neon-purple: #9b5de5;
    --neon-yellow: #fee440;
    --grid-color: rgba(0, 245, 212, 0.15);
    
    --glow-cyan: 0 0 10px rgba(0, 245, 212, 0.5), 0 0 20px rgba(0, 245, 212, 0.5);
    --glow-pink: 0 0 10px rgba(241, 91, 181, 0.5), 0 0 20px rgba(241, 91, 181, 0.5);
    --glow-purple: 0 0 10px rgba(155, 93, 229, 0.5), 0 0 20px rgba(155, 93, 229, 0.5);
}

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

body {
    background-color: #05010f;
    background-image: radial-gradient(circle at center, #1a0b2e 0%, #05010f 100%);
    color: var(--neon-cyan);
    font-family: 'Press Start 2P', monospace;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    overflow: hidden;
}

/* CRT Scanline, Vignette and Flicker */
.crt-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        linear-gradient(rgba(18, 16, 16, 0) 50%, rgba(0, 0, 0, 0.25) 50%), 
        linear-gradient(90deg, rgba(255, 0, 0, 0.06), rgba(0, 255, 0, 0.02), rgba(0, 0, 255, 0.06));
    background-size: 100% 4px, 6px 100%;
    z-index: 100;
    pointer-events: none;
    box-shadow: inset 0 0 150px rgba(0,0,0,0.9); /* Vignette */
    animation: scanline 10s linear infinite;
}

@keyframes scanline {
    0% { background-position: 0 0; }
    100% { background-position: 0 100vh; }
}

.game-container {
    position: relative;
    background-color: transparent;
    padding: 20px;
    z-index: 10;
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    max-width: 640px;
}

/* Screen Shake Animation */
@keyframes shake {
    0% { transform: translate(1px, 1px) rotate(0deg); }
    10% { transform: translate(-2px, -3px) rotate(-1deg); }
    20% { transform: translate(-4px, 0px) rotate(1deg); }
    30% { transform: translate(4px, 3px) rotate(0deg); }
    40% { transform: translate(2px, -2px) rotate(1deg); }
    50% { transform: translate(-2px, 3px) rotate(-1deg); }
    60% { transform: translate(-4px, 2px) rotate(0deg); }
    70% { transform: translate(4px, 2px) rotate(-1deg); }
    80% { transform: translate(-2px, -2px) rotate(1deg); }
    90% { transform: translate(2px, 3px) rotate(0deg); }
    100% { transform: translate(1px, -3px) rotate(-1deg); }
}
.shake {
    animation: shake 0.4s cubic-bezier(.36,.07,.19,.97) both;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    margin-bottom: 20px;
    position: relative;
}

.title {
    font-size: 24px;
    color: var(--neon-pink);
    text-shadow: var(--glow-pink);
    text-align: center;
    line-height: 1.5;
}

.glass-badge {
    background: rgba(13, 2, 33, 0.6);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(0, 245, 212, 0.3);
    padding: 10px 15px;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.5), inset 0 0 10px rgba(0, 245, 212, 0.1);
    font-size: 10px;
    color: var(--neon-cyan);
    line-height: 1.8;
}

.glass-badge span {
    font-size: 16px;
    text-shadow: var(--glow-cyan);
}

.canvas-wrapper {
    position: relative;
    width: 100%;
    max-width: 600px;
    height: auto;
    aspect-ratio: 1 / 1;
    background-image: 
        linear-gradient(var(--grid-color) 1px, transparent 1px),
        linear-gradient(90deg, var(--grid-color) 1px, transparent 1px);
    background-size: calc(100% / 30) calc(100% / 30);
    background-position: center;
    border: 3px solid var(--neon-purple);
    border-radius: 6px;
    box-shadow: 0 0 20px rgba(155, 93, 229, 0.4), inset 0 0 40px rgba(0, 0, 0, 0.8);
    background-color: rgba(13, 2, 33, 0.8);
}

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

/* Glassmorphism Screens */
.overlay-screen {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(13, 2, 33, 0.75);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.4s ease;
    border-radius: 6px;
}

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

.overlay-screen h1 {
    font-size: 40px;
    margin-bottom: 30px;
    color: var(--neon-cyan);
    text-shadow: var(--glow-cyan);
    line-height: 1.3;
}

.controls {
    margin-top: 40px;
    font-size: 10px;
    line-height: 2;
    text-align: center;
    color: rgba(255, 255, 255, 0.7);
    background: rgba(0,0,0,0.5);
    padding: 15px;
    border-radius: 8px;
    border: 1px solid rgba(255,255,255,0.1);
}

.blink {
    animation: blinker 1.5s cubic-bezier(0.4, 0, 0.6, 1) infinite;
    margin-top: 20px;
    font-size: 14px;
    color: var(--neon-yellow);
    text-shadow: 0 0 10px rgba(254, 228, 64, 0.5);
}

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

.status-message {
    position: absolute;
    top: 20%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 20px;
    color: var(--neon-yellow);
    text-shadow: 0 0 15px var(--neon-yellow);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s, top 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    text-align: center;
    background: rgba(0,0,0,0.7);
    padding: 12px 24px;
    border-radius: 30px;
    border: 1px solid rgba(254, 228, 64, 0.5);
    backdrop-filter: blur(8px);
}

.status-message.show {
    opacity: 1;
    top: 15%;
}

@keyframes rainbow {
    0% { filter: hue-rotate(0deg) saturate(2); }
    100% { filter: hue-rotate(360deg) saturate(2); }
}
.god-mode canvas {
    animation: rainbow 3s linear infinite;
}

/* Meta Game UI */
.difficulty-select {
    display: flex;
    gap: 15px;
    margin: 20px 0;
}
.diff-option {
    font-size: 10px;
    padding: 8px 12px;
    border: 1px solid rgba(0, 245, 212, 0.3);
    border-radius: 4px;
    color: rgba(255, 255, 255, 0.5);
    background: rgba(0,0,0,0.5);
    transition: all 0.2s;
}
.diff-option.active-diff {
    color: var(--neon-cyan);
    border-color: var(--neon-cyan);
    box-shadow: inset 0 0 10px rgba(0, 245, 212, 0.3), 0 0 10px rgba(0, 245, 212, 0.5);
    background: rgba(0, 245, 212, 0.1);
}

.highscore-entry {
    margin: 20px 0;
}
.new-high-text {
    color: var(--neon-yellow);
    text-shadow: 0 0 10px rgba(254, 228, 64, 0.8);
    margin-bottom: 15px;
    animation: blinker 0.5s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}
.letter-inputs {
    display: flex;
    justify-content: center;
    gap: 10px;
}
.letter {
    font-size: 24px;
    color: rgba(255, 255, 255, 0.5);
    border-bottom: 2px solid rgba(255,255,255,0.3);
    padding: 0 5px;
    transition: all 0.2s;
}
.letter.active-letter {
    color: var(--neon-pink);
    border-bottom: 4px solid var(--neon-pink);
    text-shadow: var(--glow-pink);
}