:root{
  color-scheme:dark;
  --ink:#f2f2f2;
  --muted:#aeb0b3;
  --panel:#242424;
  --line:#3d3f42;
  --green:#009539;
  --green-bright:#00ad45;
  --green-deep:#073d1c;
  --orange:#f2f2f2;
  --orange-deep:#343434;
}
*{box-sizing:border-box}
html,body{min-height:100%;margin:0}
body{background:#191919;color:var(--ink);font-family:Montserrat,Arial,ui-sans-serif,system-ui,sans-serif}
body::before{content:"";position:fixed;inset:0;pointer-events:none;background:linear-gradient(135deg,#191919 0%,#202020 58%,#122719 100%)}
button{font:inherit}
.control-shell{position:relative;z-index:1;width:min(1100px,calc(100% - 36px));min-height:100vh;margin:auto;padding:34px 0;display:flex;flex-direction:column;justify-content:center;gap:24px}
.topbar{display:grid;grid-template-columns:auto 1fr auto auto;align-items:center;gap:16px}
.brand-logo{display:block;width:clamp(170px,22vw,270px);height:auto;object-fit:contain;object-position:left center}
.eyebrow{margin:0 0 3px;color:var(--green);font-size:12px;font-weight:800;letter-spacing:.16em;text-transform:uppercase}
h1{margin:0;font-size:clamp(24px,3vw,36px);letter-spacing:-.04em}
.connection{display:flex;align-items:center;gap:8px;color:var(--muted);font-size:14px}
.connection span{width:9px;height:9px;border-radius:50%;background:#65716d;box-shadow:0 0 0 4px #65716d18}
.connection.online span{background:var(--green);box-shadow:0 0 0 4px #55e6a51c}
.logout-button{border:1px solid var(--line);border-radius:10px;background:#111c19;color:var(--muted);padding:10px 13px;cursor:pointer}
.logout-button:hover{color:var(--ink);border-color:#53665f}
.status-panel{padding:22px 26px;border:1px solid var(--line);border-radius:18px;background:#242424e8;display:grid;grid-template-columns:auto 1fr auto;align-items:baseline;gap:16px;backdrop-filter:blur(12px)}
.status-panel p,.status-panel span{margin:0;color:var(--muted)}
.status-panel strong{font-size:clamp(24px,4vw,42px);letter-spacing:-.04em}
.switch-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.source-button{position:relative;min-height:300px;padding:30px;border:1px solid var(--line);border-radius:28px;background:linear-gradient(145deg,#292929,#202020);color:var(--ink);display:flex;flex-direction:column;align-items:flex-start;justify-content:space-between;text-align:left;cursor:pointer;box-shadow:0 22px 60px #0004;transition:transform .16s ease,border-color .16s ease,box-shadow .16s ease}
.source-button:hover{transform:translateY(-3px);border-color:#53665f}
.source-button:active{transform:scale(.985)}
.source-button:focus-visible{outline:3px solid #fff;outline-offset:4px}
.source-button:disabled{cursor:wait;opacity:.72}
.source-icon{width:76px;height:76px;border-radius:21px;display:grid;place-items:center}
.source-icon svg{width:42px;fill:none;stroke:currentColor;stroke-width:2.5;stroke-linecap:round;stroke-linejoin:round}
.cms-button .source-icon{background:var(--green-deep);color:var(--green)}
.hdmi-button .source-icon{background:var(--orange-deep);color:var(--orange)}
.button-copy small{display:block;margin-bottom:8px;color:var(--muted);font-size:15px;font-weight:700}
.button-copy strong{font-size:clamp(48px,8vw,92px);line-height:.86;letter-spacing:-.07em}
.active-chip{position:absolute;right:26px;top:26px;padding:8px 12px;border-radius:999px;background:#fff;color:#06100d;font-size:12px;font-weight:900;letter-spacing:.08em;text-transform:uppercase;opacity:0;transform:scale(.8);transition:.16s}
.source-button.active .active-chip{opacity:1;transform:scale(1)}
.source-button.active.cms-button{border-color:var(--green);box-shadow:0 0 0 1px var(--green),0 28px 80px #55e6a514}
.source-button.active.hdmi-button{border-color:var(--green);box-shadow:0 0 0 1px var(--green),0 28px 80px #00953920}
.feedback{margin:0;min-height:24px;text-align:center;color:var(--muted)}
@media(max-width:700px){.control-shell{width:min(100% - 24px,560px);padding:20px 0;justify-content:flex-start}.topbar{grid-template-columns:auto 1fr auto}.connection{grid-column:1/3}.status-panel{grid-template-columns:1fr}.switch-grid{grid-template-columns:1fr;gap:14px}.source-button{min-height:210px}.button-copy strong{font-size:58px}}
@media(max-width:420px){.control-shell{width:calc(100% - 20px);padding:14px 0;gap:14px}.brand-logo{width:145px}.topbar{gap:10px}h1{font-size:22px}.logout-button{padding:9px 10px}.status-panel{padding:17px 18px;gap:6px}.source-button{min-height:176px;padding:22px;border-radius:22px}.source-icon{width:56px;height:56px;border-radius:16px}.source-icon svg{width:31px}.button-copy strong{font-size:49px}.active-chip{right:18px;top:18px}}
@media(min-width:1100px) and (min-height:800px){.source-button{min-height:340px}.control-shell{gap:28px}}
@media(orientation:landscape) and (max-height:650px){.control-shell{padding:14px 0;gap:12px;justify-content:flex-start}.status-panel{padding:14px 20px}.switch-grid{grid-template-columns:1fr 1fr}.source-button{min-height:190px;padding:20px}.source-icon{width:54px;height:54px}.button-copy strong{font-size:52px}.feedback{font-size:13px}}
@media(prefers-reduced-motion:reduce){*{transition:none!important}}