*, *::before, *::after { 
    box-sizing: border-box; 
    cursor: none !important; 
}

* { 
    margin: 0; 
    user-select: none; 
    -webkit-user-select: none; 
}

html, body {
    height: 100%;
    margin: 0;
    overflow: hidden;
    font-family: 'Inter', -apple-system, sans-serif;
}

.bg-video {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    object-fit: cover;
    z-index: -10;
    filter: brightness(0.4);
    pointer-events: none;
}

.grain {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    z-index: 9999; pointer-events: none;
}
.grain::before {
    content: ""; position: fixed; top: -10rem; left: -10rem;
    width: calc(100% + 20rem); height: calc(100% + 20rem);
    background-image: url(https://upload.wikimedia.org/wikipedia/commons/5/5c/Image_gaussian_noise_example.png);
    opacity: 0.15; animation: noise 1s steps(2) infinite; pointer-events: none;
}
@keyframes noise {
    0%   { transform: translate3d(0, 9rem, 0); }
    10%  { transform: translate3d(-1rem, -4rem, 0); }
    20%  { transform: translate3d(-8rem, 2rem, 0); }
    30%  { transform: translate3d(9rem, -9rem, 0); }
    40%  { transform: translate3d(-2rem, 7rem, 0); }
    50%  { transform: translate3d(-9rem, -4rem, 0); }
    60%  { transform: translate3d(2rem, 6rem, 0); }
    70%  { transform: translate3d(7rem, -8rem, 0); }
    80%  { transform: translate3d(-9rem, 1rem, 0); }
    90%  { transform: translate3d(6rem, -5rem, 0); }
    100% { transform: translate3d(-7rem, 0, 0); }
}

.bloom {
    position: fixed; inset: 0; z-index: 500; pointer-events: none;
    backdrop-filter: blur(0.7px) brightness(1.1);
}

.marquee-wrapper {
    position: fixed; top: 50%; transform: translateY(-50%); width: 100%;
    overflow: hidden; z-index: 5; pointer-events: none; display: flex;
}
.marquee-content {
    display: flex; white-space: nowrap; animation: scrollMarquee 25s linear infinite;
}
.marquee-content p {
    font-size: 8.5vh; font-weight: 800; color: #bababa;
    text-transform: uppercase; padding-right: 150px; letter-spacing: -2px;
}
@keyframes scrollMarquee {
    from { transform: translateX(0); }
    to { transform: translateX(-50%); }
}

.cover-outer {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    display: flex; justify-content: center; align-items: center;
    perspective: 1500px; z-index: 10;
}
.cover-inner {
    width: 600px; height: 600px; max-width: 75vw; max-height: 75vw;
    transition: transform 0.2s ease-out; transform-style: preserve-3d;
}
.cover-inner img {
    width: 100%; height: 100%; object-fit: cover;
    border-radius: 6%; box-shadow: 0 40px 100px rgba(0,0,0,0.5);
}

/* KONTROLER GŁOŚNOŚCI */
.audio-control {
    position: fixed; bottom: 80px; right: 30px; z-index: 1000;
    display: flex; align-items: center;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
    width: 44px; height: 44px; border-radius: 50px; overflow: hidden; 
    transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}
.mute-btn {
    min-width: 44px; height: 44px; background: transparent; border: none;
    color: #bababa; display: flex; align-items: center; justify-content: center;
    padding: 0; transition: color 0.3s; outline: none;
}
.mute-btn:hover { color: white; }
.mute-btn svg { width: 22px; height: 22px; fill: currentColor; }

.volume-slider {
    -webkit-appearance: none; width: 80px; height: 4px; border-radius: 2px;
    background: rgba(255, 255, 255, 0.2); outline: none; opacity: 0; margin-right: 15px;
    transition: opacity 0.3s; pointer-events: none;
}
.volume-slider::-webkit-slider-thumb {
    -webkit-appearance: none; appearance: none; width: 12px; height: 12px;
    border-radius: 50%; background: white; box-shadow: 0 0 5px rgba(0,0,0,0.3);
}

.audio-control.is-unmuted:hover { width: 140px; }
.audio-control.is-unmuted:hover .volume-slider {
    opacity: 1; pointer-events: auto;
}

.menu-bar {
    position: fixed; top: 0; width: 100%; text-align: center;
    padding: 4vh 10px; z-index: 100; display: flex; justify-content: center;
    flex-wrap: wrap; gap: 10px;
}
.menu-bar a {
    color: #bababa; text-decoration: none; padding: 10px 20px; transition: 0.4s;
    font-size: 17px; font-weight: 500; white-space: nowrap;
    text-transform: lowercase; letter-spacing: -0.2px;
}
.menu-bar a:hover { color: white; }

footer {
    position: fixed; bottom: 0; width: 100%; display: flex;
    justify-content: space-between; padding: 25px; z-index: 100;
    color: #bababa; font-size: 13px; font-weight: 400;
}
footer a { color: #bababa; text-decoration: none; }
footer a:hover { color: white; }

/* ======== ULEPSZONY KURSOR ======== */
.circle {
    --circle-size: 26px;
    position: fixed; 
    height: var(--circle-size); 
    width: var(--circle-size);
    border: 2px solid #ffffff; 
    border-radius: 100%;
    top: calc(var(--circle-size) / -2); 
    left: calc(var(--circle-size) / -2);
    pointer-events: none; 
    
    /* Gwarantuje, że kursor nie schowa się pod niczym (nawet ziarnem) */
    z-index: 10000; 
    opacity: 0; 

    /* Robi efekt soczewki/negatywu na kolory pod spodem */
    mix-blend-mode: difference; 
    
    /* Animujemy tylko tło i obramowanie w CSS (Skalowanie i ruch liczy JS) */
    transition: background-color 0.3s ease, border-color 0.3s ease, opacity 0.3s ease;
}

/* Wersja po najechaniu na interaktywne obiekty (wypełniona) */
.circle.hovered {
    background-color: #ffffff;
    border-color: #ffffff;
}

@media (max-width: 768px) {
    .circle { display: none !important; }
    .marquee-content p { font-size: 6vh; padding-right: 80px; }
    .menu-bar a { font-size: 15px; padding: 10px 12px; }
    .audio-control { bottom: 70px; right: 20px; }
}