* { margin: 0; padding: 0; box-sizing: border-box; }
html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: #03030c;
    font-family: 'Courier New', 'Lucida Console', 'Consolas', monospace;
    color: #d8d8f8;
    user-select: none;
    -webkit-user-select: none;
}
#world {
    position: fixed;
    inset: 0;
    display: block;
    width: 100%;
    height: 100%;
}
#hud {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    padding: 1rem 1.5rem;
    display: flex;
    justify-content: space-between;
    pointer-events: none;
    z-index: 10;
    text-transform: uppercase;
    letter-spacing: 0.15em;
}
.hud-item { display: flex; flex-direction: column; gap: 0.1rem; }
.label { font-size: 0.6rem; color: #6666a0; }
.value { font-size: 1.05rem; color: #c8c8f8; text-shadow: 0 0 10px rgba(180,170,240,0.35); }
#overlay {
    position: fixed;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    background: rgba(3,3,12,0.85);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    z-index: 20;
    transition: opacity 0.35s ease;
}
#overlay.hidden { opacity: 0; pointer-events: none; }
#overlay h1 {
    font-size: clamp(1.6rem, 5.8vw, 2.8rem);
    letter-spacing: 0.3em;
    color: #ffffff;
    text-shadow:
        0 0 18px rgba(220,210,255,0.8),
        0 0 40px rgba(180,160,255,0.4);
}
#sub {
    font-size: clamp(0.65rem, 1.4vw, 0.85rem);
    letter-spacing: 0.18em;
    color: #a8a0d0;
    margin-top: 0.3rem;
}
#startBtn {
    margin-top: 1.4rem;
    padding: 0.8rem 2.4rem;
    border: 1px solid #6060b0;
    background: rgba(20,18,50,0.6);
    color: #d8d0ff;
    font-family: inherit;
    font-size: 0.8rem;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    cursor: pointer;
    transition: all 0.2s ease;
}
#startBtn:hover {
    background: linear-gradient(135deg, #2a2050, #18103a);
    border-color: #9890e0;
    box-shadow: 0 0 22px rgba(120,100,240,0.4);
    color: #ffffff;
}
#final {
    margin-top: 0.7rem;
    font-size: 0.75rem;
    letter-spacing: 0.14em;
    color: #8888c8;
    min-height: 1.3em;
    text-align: center;
}