:root {
    --bg-color: #050505;
    --text-color: #e0e0e0;
    --color-1: #ff003c;
    --color-2: #00f0ff;
    --color-3: #ccff00;
}

html {
    scroll-behavior: smooth; /* Thay thế ScrollSmoother */
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: 'Space Grotesk', sans-serif;
    overflow-x: hidden;
    margin: 0;
    padding: 0;
}

h1, h2, h3, .brand-font {
    font-family: 'Syncopate', sans-serif;
    text-transform: uppercase;
}

/* --- PRELOADER --- */
#preload-loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
    background: #000;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
}

#video-wrapper {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    opacity: 0; 
}

#intro-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

#enter-btn {
    position: relative;
    z-index: 10;
    font-family: 'Syncopate', sans-serif;
    font-size: 1.2rem;
    letter-spacing: 0.2em;
    color: var(--color-2);
    border: 1px solid var(--color-2);
    padding: 15px 40px;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(5px);
    cursor: pointer;
    text-transform: uppercase;
    opacity: 0; 
}

/* --- MAIN CONTENT --- */
/* Mặc định opacity 0, sẽ được JS bật lên. Nếu JS lỗi, ít nhất body vẫn có màu nền */
#main-wrapper, nav {
    opacity: 0;
    transition: opacity 1s ease;
}

/* --- GLITCH TEXT --- */
.glitch-text {
    position: relative;
    color: white;
    mix-blend-mode: lighten;
}

.glitch-text::before,
.glitch-text::after {
    content: attr(data-text);
    position: absolute;
    top: 0;
    width: 100%;
    height: 100%;
    opacity: 0.8;
}

.glitch-text::before {
    left: -4px;
    color: var(--color-1);
    z-index: -1;
    mix-blend-mode: screen;
}

.glitch-text::after {
    left: 4px;
    color: var(--color-2);
    z-index: -2;
    mix-blend-mode: screen;
}

/* --- CARDS & UI --- */
.prism-card {
    position: relative;
    overflow: hidden;
}

.prism-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(45deg, rgba(255,0,60,0.2), rgba(0,240,255,0.2));
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 10;
}

.prism-card:hover::before {
    opacity: 1;
}

.prism-card img {
    transition: transform 1.2s cubic-bezier(0.19, 1, 0.22, 1);
    filter: grayscale(100%) contrast(1.2);
}

.prism-card:hover img {
    transform: scale(1.1);
    filter: grayscale(0%) contrast(1);
}

.nav-btn::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0%;
    height: 1px;
    background-color: var(--color-2);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.nav-btn:hover::after {
    width: 100%;
}

.line-clamp { overflow: hidden; display: block; }