:root { color-scheme: dark; }
* { box-sizing: border-box; }
html, body { width: 100%; height: 100%; margin: 0; overflow: hidden; background: #000; }
body { font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; cursor: none; }
.display { width: 100vw; height: 100vh; position: relative; overflow: hidden; background: #000; }
.media-stage, .media-layer { position: absolute; inset: 0; }
.media-layer { opacity: 0; transition: opacity .7s ease; display: grid; place-items: center; }
.media-layer.is-visible { opacity: 1; }
.media-layer img, .media-layer video { width: 100%; height: 100%; display: block; object-position: center; }
.screen-header {
    position: absolute; top: 0; left: 0; right: 0; z-index: 10;
    display: flex; align-items: center; justify-content: space-between; gap: 20px;
    padding: clamp(17px, 2.8vw, 38px) clamp(20px, 4vw, 64px);
    color: white; pointer-events: none;
    background: linear-gradient(180deg, rgba(0,0,0,.55), transparent);
    text-shadow: 0 2px 16px rgba(0,0,0,.65);
}
.screen-title { font-size: clamp(13px, 1.55vw, 28px); font-weight: 850; letter-spacing: .16em; }
.clock { font-size: clamp(16px, 1.8vw, 32px); font-weight: 760; font-variant-numeric: tabular-nums; }
.progress-dots {
    position: absolute; z-index: 10; left: 50%; bottom: clamp(17px, 3vw, 42px); transform: translateX(-50%);
    display: flex; align-items: center; gap: 8px; padding: 9px 12px; border-radius: 999px;
    background: rgba(0,0,0,.32); backdrop-filter: blur(8px); pointer-events: none;
}
.progress-dot { width: 8px; height: 8px; border-radius: 999px; background: rgba(255,255,255,.34); transition: width .3s, background .3s; }
.progress-dot.active { width: 28px; background: white; }
.screen-empty { position: absolute; inset: 0; z-index: 2; display: none; place-items: center; align-content: center; text-align: center; color: white; padding: 30px; }
.screen-empty.is-visible { display: grid; }
.screen-logo { width: 82px; height: 82px; display: grid; place-items: center; border-radius: 24px; background: linear-gradient(135deg, #5b7cff, #8069ff); font-weight: 900; font-size: 29px; box-shadow: 0 25px 70px rgba(91,124,255,.28); }
.screen-empty h1 { font-size: clamp(30px, 5vw, 62px); margin: 25px 0 8px; letter-spacing: -.04em; }
.screen-empty p { color: rgba(255,255,255,.58); font-size: clamp(14px, 1.5vw, 22px); }
.fullscreen-button {
    position: absolute; right: 18px; bottom: 18px; z-index: 20; width: 44px; height: 44px;
    border: 1px solid rgba(255,255,255,.22); border-radius: 12px; background: rgba(0,0,0,.42);
    color: white; cursor: pointer; opacity: 0; transition: opacity .2s; font-size: 21px;
}
.display:hover .fullscreen-button, .fullscreen-button:focus { opacity: 1; }
.start-button {
    position: absolute; z-index: 30; left: 50%; top: 50%; transform: translate(-50%, -50%);
    border: 1px solid rgba(255,255,255,.28); border-radius: 15px; padding: 16px 24px;
    background: rgba(0,0,0,.72); color: white; font: 750 15px/1 system-ui; cursor: pointer;
}
.connection-badge {
    position: absolute; z-index: 30; left: 50%; bottom: 18px; transform: translateX(-50%);
    padding: 9px 13px; border-radius: 999px; background: rgba(180,40,57,.78); color: white;
    font: 700 11px/1 system-ui; letter-spacing: .03em;
}
@media (pointer: coarse) { body { cursor: auto; } .fullscreen-button { opacity: .65; } }