/* NOTHING game minimalist dark theme */
:root {
    --bg-color: #111216;
    --bg-color-darker: #0a0a0d;
    --text-color: #f5f5f5;
    --accent-color: #6ee7ff;
    --pixel-color: #23272f;
    --message-glow: 0 0 8px #6ee7ff44;
}
html, body {
    height: 100%;
    margin: 0;
    padding: 0;
}
body {
    min-height: 100vh;
    min-width: 100vw;
    background: var(--bg-color);
    color: var(--text-color);
    font-family: 'Inter', 'Helvetica Neue', Arial, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: background 0.7s cubic-bezier(.4,0,.2,1);
    overflow: hidden;
    user-select: none;
    cursor: pointer;
}
#game-container {
    touch-action: none;
    position: relative;
    width: 100vw;
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}
#message {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 1.5rem;
    color: var(--text-color);
    opacity: 0.85;
    text-align: center;
    letter-spacing: 0.02em;
    text-shadow: var(--message-glow);
    transition: opacity 1.5s, color 1s, text-shadow 1s;
    pointer-events: none;
    z-index: 10;
    white-space: pre-line;
}
.hidden {
    opacity: 0 !important;
    pointer-events: none;
}
.pixel {
    position: absolute;
    width: 2px;
    height: 2px;
    background: var(--pixel-color);
    opacity: 0;
    border-radius: 1px;
    transition: opacity 0.7s, background 0.7s;
    z-index: 2;
}
#fake-404 {
    position: fixed;
    top: 0; left: 0; width: 100vw; height: 100vh;
    background: rgba(10,10,13,0.98);
    color: #fff;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    font-size: 2rem;
    letter-spacing: 0.05em;
    z-index: 100;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.7s;
}
#fake-404.visible {
    opacity: 1;
    pointer-events: all;
}
#ambient-toggle {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    font-size: 1.2rem;
    color: var(--accent-color);
    opacity: 0.3;
    cursor: pointer;
    z-index: 20;
    transition: opacity 0.3s;
}
#ambient-toggle:hover {
    opacity: 0.7;
}
#credits {
    position: fixed;
    bottom: 1.5rem;
    left: 1.5rem;
    font-size: 0.8rem;
    color: #888;
    opacity: 0.5;
    letter-spacing: 0.1em;
    z-index: 10;
    pointer-events: none;
}
#progress-bar-container {
    position: fixed;
    left: 0;
    bottom: 0;
    width: 100vw;
    height: 4px;
    background: transparent;
    z-index: 30;
    pointer-events: none;
    opacity: 1;
    transition: opacity 0.7s;
}
#progress-bar-inner {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--accent-color), #fff0 80%);
    box-shadow: 0 0 8px 2px var(--accent-color);
    border-radius: 2px;
    transition: width 0.5s cubic-bezier(.4,0,.2,1);
}
#entrance-overlay {
    position: fixed;
    top: 0; left: 0; width: 100vw; height: 100vh;
    background: linear-gradient(135deg, #111216 80%, #23272f 100%);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 200;
    transition: opacity 1s;
}
#entrance-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}
#entrance-title {
    font-size: 3.5rem;
    color: var(--accent-color);
    letter-spacing: 0.2em;
    font-weight: bold;
    text-shadow: 0 8px 32px #6ee7ff55, 0 1px 0 #fff2;
    transform-style: preserve-3d;
    perspective: 800px;
    animation: entrance3d 5s cubic-bezier(.4,0,.2,1) forwards;
    opacity: 0;
}
@keyframes entrance3d {
    0% {
        opacity: 0;
        transform: rotateY(60deg) scale(0.7) translateZ(-200px);
        filter: blur(8px);
    }
    60% {
        opacity: 1;
        transform: rotateY(-10deg) scale(1.1) translateZ(40px);
        filter: blur(0px);
    }
    100% {
        opacity: 1;
        transform: rotateY(0deg) scale(1) translateZ(0);
        filter: blur(0px);
    }
}
#about-overlay {
    position: fixed;
    top: 0; left: 0; width: 100vw; height: 100vh;
    background: rgba(10,10,13,0.97);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 150;
    transition: opacity 0.7s;
    overflow: hidden;
}
#about-void-bg {
    position: absolute;
    top: 0; left: 0; width: 100vw; height: 100vh;
    pointer-events: none;
    z-index: 1;
}
#about-content {
    position: relative;
    background: #181a20ee;
    border-radius: 1.2rem;
    box-shadow: 0 4px 32px #0008;
    padding: 2.5rem 2rem 2rem 2rem;
    max-width: 90vw;
    width: 350px;
    text-align: center;
    color: var(--text-color);
    animation: aboutFadeIn 1.2s cubic-bezier(.4,0,.2,1);
    z-index: 2;
}
.about-subtitle {
    font-size: 1.05rem;
    color: #6ee7ffcc;
    margin-bottom: 1.2rem;
    letter-spacing: 0.08em;
    opacity: 0.7;
    font-style: italic;
    animation: subtitleFadeIn 2.2s cubic-bezier(.4,0,.2,1);
}
@keyframes subtitleFadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 0.7; transform: translateY(0); }
}
#about-content h2 {
    margin-top: 0;
    font-size: 1.5rem;
    color: var(--accent-color);
    letter-spacing: 0.08em;
    opacity: 0.9;
    text-shadow: 0 0 16px #6ee7ff33;
}
#about-content p {
    font-size: 1.08rem;
    margin-bottom: 2rem;
    color: #e0e0e0;
    line-height: 1.7;
    opacity: 0.85;
    animation: aboutTextFadeIn 2.2s cubic-bezier(.4,0,.2,1);
}
@keyframes aboutTextFadeIn {
    from { opacity: 0; }
    to { opacity: 0.85; }
}
#start-btn {
    background: transparent;
    color: var(--accent-color);
    border: 2px solid var(--accent-color);
    border-radius: 0.7rem;
    padding: 0.7rem 2.2rem;
    font-size: 1.1rem;
    font-weight: bold;
    cursor: pointer;
    box-shadow: 0 2px 24px #6ee7ff33, 0 0 0 0 #fff0;
    transition: background 0.2s, color 0.2s, box-shadow 0.3s;
    opacity: 0.92;
    animation: startBtnFadeIn 2.5s cubic-bezier(.4,0,.2,1);
}
#start-btn:hover {
    background: #23272f;
    color: #fff;
    box-shadow: 0 0 24px 4px #6ee7ff55;
}
@keyframes startBtnFadeIn {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 0.92; transform: scale(1); }
}
@keyframes aboutFadeIn {
    from { opacity: 0; transform: translateY(40px) scale(0.95); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}
/* Animated void particles */
.void-dot {
    position: absolute;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #6ee7ff22;
    box-shadow: 0 0 16px 4px #6ee7ff33;
    opacity: 0.18;
    pointer-events: none;
    animation: voidDotFloat 8s linear infinite;
}
@keyframes voidDotFloat {
    0% { transform: translateY(0) scale(1); opacity: 0.18; }
    60% { opacity: 0.22; }
    100% { transform: translateY(-60vh) scale(1.2); opacity: 0; }
}
#tap-overlay {
    position: fixed;
    top: 0; left: 0; width: 100vw; height: 100vh;
    background: radial-gradient(ellipse at 60% 40%, #23272f 0%, #111216 70%, #0a0a0d 100%);
    box-shadow: 0 0 120px 40px #6ee7ff22 inset;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 300;
    transition: opacity 0.7s;
    animation: tapBgMove 8s ease-in-out infinite alternate;
}
@keyframes tapBgMove {
    0% { background-position: 60% 40%; }
    100% { background-position: 40% 60%; }
}
#tap-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}
#tap-prompt {
    font-size: 2.3rem;
    color: #6ee7ff;
    opacity: 0.97;
    text-align: center;
    letter-spacing: 0.14em;
    text-shadow: 0 0 32px #6ee7ffcc, 0 0 8px #fff2;
    animation: tapPromptPulse 1.5s ease-in-out infinite alternate, tapPromptShimmer 3.5s linear infinite;
    user-select: none;
    padding: 2.7rem 2.2rem 1.5rem 2.2rem;
    border-radius: 1.7rem;
    background: rgba(24,26,32,0.82);
    box-shadow: 0 4px 48px #6ee7ff44, 0 0 0 0 #fff0;
    position: relative;
    overflow: hidden;
}
@keyframes tapPromptPulse {
    from { transform: scale(1); }
    to { transform: scale(1.04); }
}
@keyframes tapPromptShimmer {
    0% { filter: brightness(1) drop-shadow(0 0 0 #fff0); }
    60% { filter: brightness(1.08) drop-shadow(0 0 16px #6ee7ff88); }
    100% { filter: brightness(1) drop-shadow(0 0 0 #fff0); }
}
#tap-icon {
    font-size: 2.5rem;
    color: #6ee7ff;
    margin-top: 1.2rem;
    text-shadow: 0 0 24px #6ee7ffcc, 0 0 8px #fff2;
    animation: tapIconBounce 1.2s cubic-bezier(.4,0,.2,1) infinite alternate, tapIconGlow 2.5s ease-in-out infinite;
}
@keyframes tapIconBounce {
    0% { transform: translateY(0); }
    100% { transform: translateY(18px) scale(1.12); }
}
@keyframes tapIconGlow {
    0%, 100% { text-shadow: 0 0 24px #6ee7ffcc, 0 0 8px #fff2; }
    50% { text-shadow: 0 0 48px #6ee7ff, 0 0 16px #fff4; }
}
@media (max-width: 600px) {
    #message { font-size: 1.1rem; }
    #fake-404 { font-size: 1.1rem; }
}