@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;700;800&display=swap');

:root {
    --neon-blue: #00f3ff;
    --neon-pink: #ff00ff;
    --neon-green: #00ff00;
    --bg-dark: #0a0a12;
    --card-bg: rgba(20, 20, 35, 0.6);
}

body {
    font-family: 'JetBrains Mono', monospace; /* Font kiểu lập trình viên/hacker */
    background-color: var(--bg-dark);
    background-image: 
        radial-gradient(circle at 15% 50%, rgba(0, 243, 255, 0.05), transparent 25%), 
        radial-gradient(circle at 85% 30%, rgba(255, 0, 255, 0.05), transparent 25%);
    color: #e0e0e0;
    overflow-x: hidden;
}

/* --- SCROLLBAR CHẤT --- */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: #000; }
::-webkit-scrollbar-thumb { background: linear-gradient(var(--neon-blue), var(--neon-pink)); border-radius: 3px; }

/* --- HEADER RGB --- */
.header-section {
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding: 2rem 0 3rem;
    text-align: center;
    border-radius: 0 0 30px 30px;
    box-shadow: 0 10px 30px -10px rgba(0, 243, 255, 0.1);
    position: relative;
    overflow: hidden;
}

/* Hiệu ứng chữ Neon */
.neon-text {
    color: #fff;
    text-shadow: 
        0 0 5px #fff,
        0 0 10px #fff,
        0 0 20px var(--neon-blue),
        0 0 40px var(--neon-blue),
        0 0 80px var(--neon-blue);
    animation: flicker 1.5s infinite alternate;
}

@keyframes flicker {
    0%, 18%, 22%, 25%, 53%, 57%, 100% { opacity: 1; }
    20%, 24%, 55% { opacity: 0.4; }
}

/* --- GAMING CARDS --- */
.gaming-card {
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    border-radius: 12px;
}

.gaming-card::before {
    content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 2px;
    background: linear-gradient(90deg, var(--neon-blue), var(--neon-pink));
    transform: scaleX(0); transform-origin: left; transition: transform 0.3s ease;
}

.gaming-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 0 20px rgba(0, 243, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.2);
}

.gaming-card:hover::before { transform: scaleX(1); }

/* --- DOCK & PLAYER --- */
#main-dock .dock-container {
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.5);
}

.dock-item:hover {
    color: var(--neon-blue);
    transform: translateY(-5px) scale(1.1);
    text-shadow: 0 0 10px var(--neon-blue);
}

#sticky-player {
    background: rgba(10, 10, 15, 0.95);
    border-top: 1px solid var(--neon-blue);
    backdrop-filter: blur(15px);
}

/* --- CONTEXT MENU --- */
#context-menu {
    background: rgba(15, 15, 25, 0.95);
    border: 1px solid var(--neon-blue);
    box-shadow: 0 0 15px rgba(0, 243, 255, 0.15);
}
#context-menu li a:hover {
    background: rgba(0, 243, 255, 0.1);
    color: var(--neon-blue);
}

/* --- MOBILE TWEAKS --- */
@media (max-width: 640px) {
    .header-section h1 { font-size: 2rem; }
    .gaming-card { margin-bottom: 0.5rem; }
}

/* Animation nền */
.bg-animate {
    position: absolute; width: 200%; height: 200%; top: -50%; left: -50%;
    background: radial-gradient(circle, transparent 20%, #000 120%);
    z-index: 0; pointer-events: none;
}