:root {
    --color-bg-deep: #02030a;
    --color-bg-mid: #081232;
    --color-purple: #6a3cff;
    --color-blue: #1e3a8a;
    --color-silver-1: #f5f7fa;
    --color-silver-2: #c0c7d0;
    --color-silver-3: #8a93a3;
}

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

html, body {
    height: 100%;
    overflow: hidden;
    font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
    background: var(--color-bg-deep);
    color: var(--color-silver-1);
    cursor: pointer;
}

.welcome {
    position: relative;
    width: 100%;
    height: 100vh;
    background:
        radial-gradient(ellipse at 20% 30%, rgba(106, 60, 255, 0.25) 0%, transparent 55%),
        radial-gradient(ellipse at 80% 70%, rgba(30, 58, 138, 0.45) 0%, transparent 60%),
        radial-gradient(ellipse at center, var(--color-bg-mid) 0%, var(--color-bg-deep) 80%);
    overflow: hidden;
    transition: opacity 1s ease, transform 1s ease;
}

.welcome.fade-out {
    opacity: 0;
    transform: scale(1.05);
}

#galaxy {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    display: block;
}

.content {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    text-align: center;
    padding: 0 1.5rem;
    animation: fadeIn 2s ease forwards;
}

.title {
    font-size: clamp(1.8rem, 5vw, 3.8rem);
    font-weight: 300;
    line-height: 1.3;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    background: linear-gradient(180deg,
        var(--color-silver-1) 0%,
        var(--color-silver-2) 50%,
        var(--color-silver-3) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    text-shadow: 0 0 25px rgba(180, 200, 255, 0.25);
}

.subtitle {
    margin-top: 1.5rem;
    font-size: clamp(1rem, 1.6vw, 1.3rem);
    font-weight: 300;
    color: var(--color-silver-2);
    letter-spacing: 0.15em;
    font-style: italic;
}

.hint {
    margin-top: 3.5rem;
    font-size: 0.85rem;
    color: var(--color-silver-3);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    animation: pulse 2.5s ease-in-out infinite;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to   { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
    0%, 100% { opacity: 0.4; }
    50%      { opacity: 1; }
}