* { box-sizing: border-box; }
html, body { margin: 0; background: #111; color: #eee; font: 16px/1.4 system-ui, sans-serif; }
button { font: inherit; padding: .45em 1em; border: 1px solid #555; border-radius: 6px; background: #222; color: inherit; cursor: pointer; }
button:hover { background: #333; }
button:disabled { opacity: .4; cursor: default; }
kbd { font: inherit; font-size: .85em; padding: 0 .35em; border: 1px solid #666; border-radius: 4px; }

#setup { max-width: 52rem; margin: 0 auto; padding: 2rem 1.25rem 4rem; }
h1 { margin: 0 0 .25rem; font-size: 1.6rem; }
h2 { font-size: 1.1rem; color: #aaa; }
#status { color: #aaa; margin: 0 0 1.5rem; }
#status .warn { color: #f0b44c; }
#status button { padding: .1em .6em; margin-left: .3em; }

.key .body { flex: 1; }
.key { display: flex; gap: 1rem; padding: .75rem 0; border-top: 1px solid #2a2a2a; }
.num { flex: 0 0 2.5rem; font-size: 1.8rem; font-weight: 700; text-align: center; color: #888; }
.key h2 { margin: .35rem 0 .2rem; color: #ddd; }
ul { list-style: none; margin: 0; padding: 0; flex: 1; }
.vid { display: grid; grid-template-columns: 2.4rem 1fr 6rem 12rem 6.5rem; gap: .75rem; align-items: center; padding: .3rem 0; }
.vid .flag { width: 2.4rem; height: auto; border-radius: 2px; }
.vid .size { color: #999; text-align: right; }
.vid .state { font-size: .9rem; color: #aaa; }
.vid .state.ok { color: #6c6; }
.vid .state.err { color: #f77; }
.vid progress { width: 100%; height: .6rem; display: block; accent-color: #6c6; }

footer { display: flex; gap: .75rem; margin-top: 2rem; }
.go { margin-left: auto; background: #2d6a2d; border-color: #3d8a3d; font-size: 1.15rem; padding: .5em 1.4em; }
.go:hover { background: #377f37; }
.help { color: #888; margin-top: 1.5rem; }

#player { position: fixed; inset: 0; background: #000; cursor: none; }
#player video { width: 100%; height: 100%; object-fit: contain; }
#flag { position: absolute; bottom: 3vh; right: 3vw; width: clamp(120px, 15vw, 320px); height: auto;
  box-shadow: 0 4px 24px rgba(0, 0, 0, .6); }

#label { position: absolute; left: 50%; bottom: 8vh; transform: translateX(-50%); padding: .3em .9em; border-radius: 12px;
  background: rgba(0, 0, 0, .6); color: #fff; font-size: clamp(28px, 4.5vw, 72px); font-weight: 700; white-space: nowrap;
  opacity: 0; transition: opacity .6s; pointer-events: none; }
#label.on { opacity: 1; transition: none; }
#label b { color: #9be89b; margin-right: .4em; }
#menu { position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); margin: 0; padding: 1.2em 2em; list-style: none;
  background: rgba(0, 0, 0, .8); border-radius: 16px; font-size: clamp(22px, 3vw, 48px); line-height: 1.6; }
#menu b { display: inline-block; width: 1.6em; color: #9be89b; }
#menu .now { color: #fff; font-weight: 700; }
#menu li:not(.now) { color: #bbb; }
#info { position: absolute; left: 3vw; top: 4vh; max-height: 92vh; width: min(42vw, 720px); overflow: hidden; padding: 1.4em 1.6em;
  background: rgba(0, 0, 0, .82); border-radius: 14px; font-size: clamp(14px, 1.15vw, 21px); line-height: 1.45; }
#info h2 { margin: 0 0 .6em; color: #fff; font-size: 1.35em; line-height: 1.25; }
#info p { margin: 0 0 .75em; color: #ddd; }
#info .src { margin-top: 1em; color: #999; font-size: .85em; }