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

body {
    background-color: #000000;
    color: #ffffff;
    font-family: 'Courier New', monospace;
    overflow: hidden;
    width: 100vw;
    height: 100vh;
    position: relative;
}

/* Initial prompt */
.init-prompt {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    z-index: 1000;
    font-size: 14px;
    color: #666;
    letter-spacing: 2px;
    text-transform: lowercase;
    transition: opacity 0.5s ease;
}

.init-prompt.hidden {
    opacity: 0;
    pointer-events: none;
}

.init-prompt img {
    max-width: 160px;
    height: auto;
    display: block;
    margin: 0 auto;
    filter: drop-shadow(2px 0 0 rgba(255, 0, 0, 0.3))
            drop-shadow(-2px 0 0 rgba(0, 255, 255, 0.3));
    animation: logoBreathe 6s ease-in-out infinite;
    will-change: transform, filter;
}

@keyframes logoBreathe {
    0%, 100% {
        transform: scale(0.98);
    }
    50% {
        transform: scale(1.02);
    }
}

/* Text canvas - covers entire viewport */
#text-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10;
    pointer-events: none;
}

/* Visual effects container (Three.js) */
#visual-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

#visual-container canvas {
    display: block;
}

/* Message container for puzzle discoveries */
#message-container {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 100;
    text-align: center;
    pointer-events: none;
}

.discovery-message {
    font-size: 18px;
    color: #ffffff;
    letter-spacing: 3px;
    text-transform: lowercase;
    animation: messageAppear 3s ease-out forwards;
}

@keyframes messageAppear {
    0% {
        opacity: 0;
        transform: scale(0.8);
    }
    10% {
        opacity: 1;
        transform: scale(1);
    }
    90% {
        opacity: 1;
        transform: scale(1);
    }
    100% {
        opacity: 0;
        transform: scale(1.2);
    }
}

.completion-message {
    font-size: 24px;
    color: #ff0000;
    letter-spacing: 4px;
    text-transform: lowercase;
    margin-top: 20px;
}

/* QR code reveal */
#qr-container {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 200;
    text-align: center;
    transition: opacity 0.5s ease;
}

#qr-container.hidden {
    opacity: 0;
    pointer-events: none;
}

/* QR code wrapper - optimize for GSAP animations */
#qr-code {
    will-change: filter, transform, opacity;
    transition: none; /* Prevent CSS transitions interfering with GSAP */
}

/* Message text - optimize for corruption updates */
#qr-container p {
    will-change: contents;
    font-family: 'Courier New', monospace;
    letter-spacing: 2px;
    text-transform: lowercase;
}

.qr-reveal {
    animation: qrReveal 2s ease-out forwards;
}

@keyframes qrReveal {
    0% {
        opacity: 0;
        transform: scale(0) rotate(0deg);
        filter: blur(20px);
    }
    50% {
        filter: blur(10px);
    }
    100% {
        opacity: 1;
        transform: scale(1) rotate(360deg);
        filter: blur(0px);
    }
}

/* Utility classes */
.hidden {
    display: none;
}

/* Cursor variations for proximity hints */
body.hint-nearby {
    cursor: pointer;
}

/* Screen shake for glitch effects */
.screen-shake {
    animation: shake 0.2s ease-in-out;
}

@keyframes shake {
    0%, 100% {
        transform: translate(0, 0);
    }
    25% {
        transform: translate(-10px, 5px);
    }
    50% {
        transform: translate(10px, -5px);
    }
    75% {
        transform: translate(-5px, -10px);
    }
}

/* Mobile zone hint pulses (progressive reveal) */
.zone-hint-mobile {
    position: fixed;
    border-radius: 50%;
    background: radial-gradient(
        circle,
        rgba(255, 255, 255, 0.1) 0%,
        rgba(255, 255, 255, 0) 70%
    );
    pointer-events: none;
    z-index: 50;
    animation: zonePulse 2s ease-in-out infinite;
    will-change: transform, opacity;
}

@keyframes zonePulse {
    0%, 100% {
        transform: scale(1);
        opacity: 0.15;
    }
    50% {
        transform: scale(1.08);
        opacity: 0.3;
    }
}

/* Zone activation pulse (visible hint) */
.zone-activation-pulse {
    border-radius: 50%;
    background: radial-gradient(
        circle,
        rgba(255, 255, 255, 0.2) 0%,
        rgba(255, 255, 255, 0.05) 50%,
        rgba(255, 255, 255, 0) 100%
    );
    transform-origin: center;
    will-change: transform, opacity;
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.3);
}

/* Prevent text selection and tap highlights on mobile */
@media (max-width: 768px) {
    body {
        -webkit-user-select: none;
        user-select: none;
        -webkit-tap-highlight-color: transparent;
    }
}