:root{
  --bg:#f5f6f8; --panel:#fff; --text:#16181d; --muted:#666c78; --line:#e3e5ea;
  --accent:#2457d6; --accent-ink:#fff; --live:#d92d20; --warn:#b54708; --ok:#067647;
  --chip:#eef0f4; --shadow:0 1px 2px rgba(16,24,40,.06),0 1px 3px rgba(16,24,40,.08);
  --r:10px; color-scheme:light;
}
@media (prefers-color-scheme:dark){:root{
  --bg:#0e1014; --panel:#171a20; --text:#e8eaee; --muted:#9aa1ad; --line:#272b33;
  --accent:#5b8cff; --accent-ink:#0b0d12; --live:#ff5a4e; --warn:#f2a13a; --ok:#3ccb7f;
  --chip:#22262e; --shadow:none; color-scheme:dark;
}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);font:14px/1.45 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
a{color:var(--accent)}
button,input,select{font:inherit;color:inherit}
[hidden]{display:none!important}

/* layout */
.top{position:sticky;top:0;z-index:5;background:var(--panel);border-bottom:1px solid var(--line)}
.top-in{max-width:1200px;margin:0 auto;padding:10px 16px;display:flex;gap:16px;align-items:center;flex-wrap:wrap}
.brand{font-weight:700;letter-spacing:-.01em;margin-right:8px}
.brand small{display:block;font-weight:500;color:var(--muted);font-size:12px}
nav{display:flex;gap:4px;flex-wrap:wrap;flex:1}
nav button{background:none;border:0;padding:7px 12px;border-radius:8px;cursor:pointer;color:var(--muted);font-weight:500}
nav button.on{background:var(--chip);color:var(--text)}
.badge{display:inline-block;min-width:18px;padding:0 5px;margin-left:4px;border-radius:9px;background:var(--live);color:#fff;font-size:11px;line-height:18px;text-align:center}
.who{color:var(--muted);font-size:13px;display:flex;gap:8px;align-items:center}
main{max-width:1200px;margin:0 auto;padding:20px 16px 60px}
.head{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:16px;flex-wrap:wrap}
h1{font-size:20px;margin:0}
h2{font-size:15px;margin:22px 0 8px}
.muted{color:var(--muted)}

/* controls */
.btn{border:1px solid var(--line);background:var(--panel);padding:7px 14px;border-radius:8px;cursor:pointer;font-weight:500}
.btn:hover{border-color:var(--muted)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
.btn.danger{color:var(--live)}
.btn.small{padding:4px 10px;font-size:13px}
.btn.link{border:0;background:none;color:var(--muted);padding:4px 6px}
input,select{width:100%;padding:8px 10px;border:1px solid var(--line);border-radius:8px;background:var(--bg)}
label{display:block;font-size:13px;font-weight:500;margin:12px 0 4px}
.hint{font-size:12px;color:var(--muted);margin-top:4px}
.error{color:var(--live);font-size:13px;margin-top:10px;min-height:1em}

/* channel cards */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:14px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow);padding:16px;cursor:pointer;text-align:left;width:100%}
.card:hover{border-color:var(--muted)}
.card .name{font-weight:600;font-size:16px;margin:8px 0 2px}
.card .client{font-size:12px;color:var(--muted)}
.card.off{opacity:.85}
.stats{display:flex;gap:16px;margin-top:14px;flex-wrap:wrap}
.stat b{display:block;font-size:18px;font-variant-numeric:tabular-nums}
.stat span{font-size:12px;color:var(--muted)}
.pill{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;padding:3px 9px;border-radius:20px;background:var(--chip);color:var(--muted)}
.pill.live{background:color-mix(in srgb,var(--live) 14%,transparent);color:var(--live)}
.pill.live::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--live);animation:pulse 1.4s infinite}
.pill.warn{background:color-mix(in srgb,var(--warn) 16%,transparent);color:var(--warn)}
.pill.disabled{text-decoration:line-through}
@keyframes pulse{50%{opacity:.3}}
.empty{background:var(--panel);border:1px dashed var(--line);border-radius:var(--r);padding:40px;text-align:center;color:var(--muted)}

/* tables */
.tablewrap{overflow-x:auto;background:var(--panel);border:1px solid var(--line);border-radius:var(--r)}
table{width:100%;border-collapse:collapse}
th,td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--line);white-space:nowrap}
th{font-size:12px;color:var(--muted);font-weight:600}
tr:last-child td{border-bottom:0}
td.wrap{white-space:normal}

/* alerts */
.alert{display:flex;gap:12px;padding:12px 14px;border-bottom:1px solid var(--line)}
.alert:last-child{border-bottom:0}
.alert .dot{width:9px;height:9px;border-radius:50%;margin-top:6px;flex:none;background:var(--muted)}
.alert.al_aire .dot{background:var(--ok)}
.alert.fuera_del_aire .dot,.alert.clave_invalida .dot{background:var(--live)}
.alert.inestable .dot,.alert.duplicado .dot{background:var(--warn)}
.alert.new{background:color-mix(in srgb,var(--accent) 6%,transparent)}
.alert time{font-size:12px;color:var(--muted)}

/* modal */
.modal{position:fixed;inset:0;background:rgba(0,0,0,.45);display:flex;align-items:flex-start;justify-content:center;padding:40px 16px;overflow-y:auto;z-index:20}
.dialog{background:var(--panel);border-radius:14px;width:100%;max-width:640px;padding:22px;box-shadow:0 10px 40px rgba(0,0,0,.25)}
.dialog.narrow{max-width:420px}
.dialog-head{display:flex;justify-content:space-between;align-items:flex-start;gap:12px}
.dialog-head h1{font-size:18px}
.actions{display:flex;gap:8px;justify-content:flex-end;margin-top:18px;flex-wrap:wrap}
.field{display:flex;gap:6px;align-items:center}
.field code{flex:1;min-width:0;overflow-x:auto;white-space:nowrap;background:var(--bg);border:1px solid var(--line);border-radius:8px;padding:8px 10px;font:13px ui-monospace,SFMono-Regular,Menlo,monospace}
.confirm{margin-top:10px;padding:12px;border-radius:8px;background:color-mix(in srgb,var(--live) 8%,transparent);font-size:13px}

/* login */
.login{min-height:100vh;display:grid;place-items:center;padding:16px}
.login .dialog{box-shadow:var(--shadow);border:1px solid var(--line)}
.toast{position:fixed;bottom:20px;left:50%;transform:translateX(-50%);background:var(--text);color:var(--bg);padding:9px 16px;border-radius:8px;font-size:13px;z-index:30}

/* radios */
.subtabs{display:flex;gap:2px;border-bottom:1px solid var(--line);margin-bottom:16px;overflow-x:auto}
.subtabs button{background:none;border:0;border-bottom:2px solid transparent;padding:9px 12px;cursor:pointer;color:var(--muted);font-weight:500;white-space:nowrap}
.subtabs button.on{color:var(--text);border-bottom-color:var(--accent)}
.box{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:16px;margin-bottom:14px}
.grid2{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:14px}
.grid2 .box{margin-bottom:0}
.grid2 + .box{margin-top:14px}
.meter{height:6px;border-radius:3px;background:var(--chip);overflow:hidden;margin-top:12px}
.meter span{display:block;height:100%;background:var(--accent);border-radius:3px;transition:width .3s}
.seg{display:inline-flex;background:var(--chip);border-radius:8px;padding:2px}
.seg button{border:0;background:none;padding:4px 10px;border-radius:6px;cursor:pointer;color:var(--muted);font-size:13px}
.seg button.on{background:var(--panel);color:var(--text);box-shadow:var(--shadow)}
.chart{position:relative}
.chart svg{display:block;overflow:visible;max-width:100%}
.chart text{font-size:11px;fill:var(--muted);font-variant-numeric:tabular-nums}
.chart .grid{stroke:var(--line);stroke-width:1}
.chart .line{fill:none;stroke:var(--accent);stroke-width:2;vector-effect:non-scaling-stroke;stroke-linejoin:round}
.chart .area{fill:color-mix(in srgb,var(--accent) 16%,transparent)}
.chart .cross{stroke:var(--muted);stroke-width:1;stroke-dasharray:3 3;vector-effect:non-scaling-stroke}
.chart .dot{fill:var(--accent);stroke:var(--panel);stroke-width:2}
.tip{position:absolute;top:0;background:var(--panel);border:1px solid var(--line);border-radius:8px;padding:6px 10px;font-size:12px;pointer-events:none;box-shadow:var(--shadow);min-width:110px}
.drop{border:2px dashed var(--line);border-radius:var(--r);padding:22px;text-align:center}
.drop.over{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 6%,transparent)}
.days{display:flex;gap:6px;flex-wrap:wrap}
.days label{display:flex;align-items:center;gap:4px;margin:0;padding:6px 10px;border:1px solid var(--line);border-radius:8px;font-weight:400;cursor:pointer}
.days input{width:auto}
details summary{font-size:13px}
.btn:disabled{opacity:.45;cursor:not-allowed}
.subtabs{flex-wrap:nowrap!important;flex:none!important}
a.btn{text-decoration:none;color:inherit;display:inline-block}