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

html, body {
    height: 100%;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    color: #fff;
    background: #0a0a0a;
    overflow: hidden;
}

.bg {
    position: fixed;
    inset: 0;
    z-index: 0;
    background-image: url('images/cityscape.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-color: #111;
}

.overlay {
    position: fixed;
    inset: 0;
    z-index: 1;
    background: linear-gradient(
        180deg,
        rgba(0, 0, 0, 0.45) 0%,
        rgba(0, 0, 0, 0.55) 50%,
        rgba(0, 0, 0, 0.85) 100%
    );
}

.hero {
    position: relative;
    z-index: 2;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    text-align: center;
}

.brand {
    font-family: 'Bebas Neue', sans-serif;
    font-size: clamp(5rem, 18vw, 14rem);
    line-height: 0.9;
    letter-spacing: 0.02em;
    text-shadow: 0 4px 24px rgba(0, 0, 0, 0.6);
}

.brand .area {
    color: #ffd54a;
    display: block;
}

.brand .word {
    color: #fff;
    display: block;
    margin-top: -0.05em;
}

.tagline {
    margin-top: 1.5rem;
    font-size: clamp(1rem, 2.2vw, 1.25rem);
    font-weight: 400;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    opacity: 0.85;
}

.yt-btn {
    margin-top: 2.5rem;
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    background: #ff0000;
    color: #fff;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    border-radius: 999px;
    transition: transform 0.15s ease, background 0.15s ease, box-shadow 0.15s ease;
    box-shadow: 0 8px 24px rgba(255, 0, 0, 0.3);
}

.yt-btn:hover {
    background: #e60000;
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(255, 0, 0, 0.45);
}

.yt-btn svg {
    flex-shrink: 0;
}

footer {
    position: fixed;
    bottom: 1rem;
    left: 0;
    right: 0;
    z-index: 2;
    text-align: center;
    font-size: 0.8rem;
    opacity: 0.5;
    letter-spacing: 0.05em;
}

@media (max-width: 480px) {
    .yt-btn {
        padding: 0.85rem 1.5rem;
        font-size: 1rem;
    }
}