:root {
    --bg-dark: #0b0f14;
    --bg-soft: #0f172a;
    --card: #111827;
    --ice: #38bdf8;
    --cyan: #22d3ee;
    --text: #e5e7eb;
    --muted: #9ca3af;
    --glow: rgba(56, 189, 248, 0.6);
    --particle: rgba(56, 189, 248, 0.08);
}

/* Reset */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family:
        system-ui,
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        Roboto,
        Ubuntu,
        Cantarell,
        "Helvetica Neue",
        Arial,
        sans-serif;
    min-height: 100vh;
    background: radial-gradient(circle at top, var(--bg-soft), var(--bg-dark));
    color: var(--text);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    overflow: hidden;
    position: relative;
}

/* Particles Overlay */
body::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background-image: radial-gradient(var(--particle) 1px, transparent 1px);
    background-size: 40px 40px;
    animation: moveParticles 60s linear infinite;
    z-index: 0;
}

@keyframes moveParticles {
    0% { transform: translate(0,0); }
    100% { transform: translate(50px,50px); }
}

.container {
    position: relative;
    z-index: 1;
    max-width: 1500px;
    width: 100%;
    text-align: center;
    background: rgba(17, 24, 39, 0.92);
    border-radius: 24px;
    padding: 4rem 3rem;
    border: 1px solid rgba(56, 189, 248, 0.3);
    box-shadow: 0 0 80px var(--glow);
    transition: transform 0.4s ease, box-shadow 0.4s ease;
}

.container:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 0 120px var(--glow);
}

.logo img {
    max-width: 500px;
    margin-top: -5rem;
    margin-bottom: -2rem;
    filter: drop-shadow(0 0 15px var(--ice));
    transition: transform 0.4s ease, filter 0.4s ease;
}

.logo img:hover {
    transform: scale(1.08) rotate(-3deg);
    filter: drop-shadow(0 0 25px var(--cyan));
}

h1 {
    font-size: 2.8rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 1.2rem;
    color: var(--ice);
    text-shadow: 0 0 12px var(--ice), 0 0 20px var(--cyan);
    transition: text-shadow 0.3s ease;
}

h1:hover {
    text-shadow: 0 0 20px var(--ice), 0 0 35px var(--cyan);
}

p {
    font-size: 1.2rem;
    line-height: 1.9;
    color: var(--muted);
    margin-bottom: 3rem;
}

.tags {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: .8rem;
}

.tag {
    font-size: 1rem;
    padding: .6rem 1.2rem;
    border-radius: 999px;
    color: var(--ice);
    background: rgba(56, 189, 248, 0.1);
    border: 1px solid rgba(56, 189, 248, 0.25);
    text-shadow: 0 0 6px var(--ice);
    transition: transform 0.3s ease, box-shadow 0.3s ease, background 0.3s ease;
    cursor: default;
}

.tag:hover {
    transform: scale(1.15) translateY(-3px);
    box-shadow: 0 0 20px var(--ice);
    background: rgba(56, 189, 248, 0.2);
}

footer {
    margin-top: 3.5rem;
    font-size: .85rem;
    color: #64748b;
    letter-spacing: 0.6px;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    h1 { font-size: 2.2rem; }
    p { font-size: 1.05rem; }
    .logo img { max-width: 220px; }
}