:root {
    --primary: #00f2ff;
    --accent: #ff00ea;
    --card-w: 280px;
    --card-h: 380px;
    --items: 4;
    --radius: 350px;
}

/* Botão de Tela Cheia no Estilo Elite */
.fullscreen-btn {
    position: fixed;
    bottom: 30px; /* Posicionamento inferior */
    left: 30px;   /* Posicionamento esquerdo */
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    width: 60px;  /* Mesma largura dos botões nav */
    height: 60px; /* Mesma altura dos botões nav */
    border-radius: 50%; /* Redondo como os outros */
    cursor: pointer;
    z-index: 9999; /* Acima de TUDO */
    opacity: 0.2;  /* Discreto como os outros */
    transition: 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(15px);
    pointer-events: auto !important; /* FORÇA o clique a funcionar */
}

.fullscreen-btn:hover {
    opacity: 1;
    border-color: var(--primary);
    background: rgba(0, 242, 255, 0.05);
    box-shadow: 0 0 20px rgba(0, 242, 255, 0.2);
}

.fullscreen-btn svg {
    fill: #fff; /* Ícone branco inicial */
    width: 28px;
    transition: 0.3s;
}

.fullscreen-btn:hover svg {
    fill: var(--primary); /* Ícone neon no hover */
}

/* Ajuste mobile */
@media (max-width: 768px) {
    .fullscreen-btn {
        bottom: 20px;
        left: 20px;
        width: 45px;
        height: 45px;
    }
}


/* Responsividade Mobile */
@media (max-width: 768px) {
    :root {
        --radius: 200px;
        --card-w: 200px;
        --card-h: 300px;
    }
    .main-title { font-size: 3rem !important; }
    .nav-btn { width: 40px !important; height: 40px !important; }
}

* { margin: 0; padding: 0; box-sizing: border-box; outline: none; }

body {
    background: #1d4adf;
    color: #fff;
    font-family: 'Inter', sans-serif;
    height: 100vh;
    overflow: hidden;
}

#fluid { position: fixed; inset: 0; z-index: 1; opacity: 0.7; pointer-events: none; }

/* UI Layer */
.ui-overlay {
    position: absolute;
    inset: 0;
    z-index: 10;
    pointer-events: none;
    padding: 40px;
}

.main-title {
    font-family: 'Montserrat';
    font-size: 5rem;
    letter-spacing: -2px;
    background: linear-gradient(to bottom, #fff, #888);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.main-title span { color: var(--primary); -webkit-text-fill-color: var(--primary); }
.tagline { font-size: 10px; letter-spacing: 5px; color: var(--primary); margin-bottom: 5px; }

/* Scene & Carousel */
.scene {
    position: relative;
    z-index: 5;
    perspective: 2000px;
    width: 100%;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.carousel {
    width: var(--card-w);
    height: var(--card-h);
    position: relative;
    transform-style: preserve-3d;
    cursor: grab;
    transition: transform 0.8s cubic-bezier(0.2, 0, 0, 1);
}

.carousel:active { cursor: grabbing; }

/* Card Style */
.card {
    position: absolute;
    width: var(--card-w);
    height: var(--card-h);
    border-radius: 24px;
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.6s cubic-bezier(0.2, 0, 0, 1);
    opacity: 0.3;
    filter: grayscale(1) blur(2px);
}

.card-inner { padding: 35px; height: 100%; display: flex; flex-direction: column; }

/* Efeito Card Ativo (Central) */
.card.active {
    opacity: 1;
    filter: grayscale(0) blur(0);
    border-color: var(--primary);
    box-shadow: 0 0 50px rgba(0, 242, 255, 0.2);
    transform: rotateY(var(--rot)) translateZ(var(--radius)) scale(1.1);
}

.card h3 { font-family: 'Montserrat'; font-size: 1.6rem; margin: 15px 0; }
.card p { font-size: 0.9rem; opacity: 0.6; line-height: 1.5; }
.id { font-weight: 900; color: var(--primary); font-size: 1.2rem; }
.neon-line { width: 40px; height: 3px; background: var(--primary); margin-top: auto; box-shadow: 0 0 15px var(--primary); }

/* Navegação */
.nav-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    width: 60px;
    height: 60px;
    border-radius: 50%;
    cursor: pointer;
    z-index: 100;
    opacity: 0.2;
    transition: 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.nav-btn:hover { opacity: 1; border-color: var(--primary); background: rgba(0, 242, 255, 0.05); }
.nav-btn svg { fill: #fff; width: 30px; }
.nav-btn:hover svg { fill: var(--primary); }

.prev { margin-right: 50px; }
.next { margin-left: 50px; }