:root{
  --bg:#edf1fb;
  --bg-2:#f7f8ff;
  --text:#1e2337;
  --line:#dde3f3;
  --brand2:#7f6cff;
  --card:rgba(255,255,255,.86);
  --shadow:0 16px 40px rgba(59,72,130,.12);
  --muted:#7b859e;
  --topbar1:#2b2f85;
  --topbar2:#2b3c94;
  --linkbox:#0f172a;
  --linkbox-text:#e2e8f0;
  --soft:#eef1ff;
  --chart-line:#4f46e5;
  --panel-alt:#f8fafc;
}
html[data-theme="dark"]{
  --bg:#0f172a;
  --bg-2:#111827;
  --text:#e5e7eb;
  --line:#334155;
  --brand2:#8b5cf6;
  --card:rgba(17,24,39,.92);
  --shadow:0 18px 45px rgba(0,0,0,.35);
  --muted:#94a3b8;
  --topbar1:#111827;
  --topbar2:#1f2937;
  --linkbox:#020617;
  --linkbox-text:#cbd5e1;
  --soft:#1e293b;
  --chart-line:#60a5fa;
  --panel-alt:#1e293b;
}
*{box-sizing:border-box}
body{margin:0;font-family:Inter,Arial,Helvetica,sans-serif;color:var(--text);background:linear-gradient(180deg,var(--bg-2) 0,var(--bg) 100%)}
a{text-decoration:none;color:inherit}
.auth-body{min-height:100vh;background:radial-gradient(circle at top left,#7d6dff 0%,#2f2f87 45%,#15182f 100%)}
.auth-shell{min-height:100vh;display:grid;place-items:center;padding:24px}
.auth-card{width:100%;max-width:520px;padding:32px;border-radius:28px}
.glass{background:var(--card);backdrop-filter:blur(12px);box-shadow:var(--shadow);border:1px solid rgba(255,255,255,.08)}
.brand-big{font-size:40px;font-weight:800;color:#fff;background:linear-gradient(135deg,#ffffff,#d4d8ff);-webkit-background-clip:text;-webkit-text-fill-color:transparent;text-align:center}
.muted{color:#d8ddff;margin-top:8px;text-align:center}
.muted-dark{font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.08em}
.muted-inline{color:var(--muted)}
.alert{margin:18px 0;padding:14px 16px;border-radius:14px;background:#ffe7e7;color:#9d2424}
.alert.ok{background:#dcfce7;color:#166534}
.form-grid{display:grid;gap:14px;margin-top:24px}
label{display:grid;gap:8px;font-weight:600}
input,select{width:100%;border:1px solid var(--line);background:var(--panel-alt);color:var(--text);padding:14px 16px;border-radius:16px;font-size:15px}
.btn-primary,.btn-soft,.btn-danger,.theme-btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 18px;border-radius:16px;font-weight:700;border:none;cursor:pointer}
.btn-primary{background:linear-gradient(135deg,var(--brand2),#8d6df7);color:#fff}
.btn-soft{background:var(--soft);color:var(--text)}
.btn-danger{background:#fee2e2;color:#991b1b}
.theme-btn{background:var(--soft);color:var(--text);min-height:40px;padding:0 12px}
.auth-links{margin-top:16px;color:#eef0ff;text-align:center}
.topbar{height:72px;background:linear-gradient(90deg,var(--topbar1),var(--topbar2));color:#fff;display:flex;align-items:center;justify-content:space-between;padding:0 24px;box-shadow:0 4px 18px rgba(24,31,79,.2)}
.topbar-brand{font-size:28px;font-weight:800}
.topbar-actions{display:flex;align-items:center;gap:10px}
.demo-tag{font-size:16px;opacity:.75;margin-left:8px}
.mini-link{color:#fff;opacity:.92}
.layout{display:grid;grid-template-columns:240px 1fr;min-height:calc(100vh - 72px)}
.sidebar{margin:18px;padding:20px 14px;border-radius:28px;background:linear-gradient(180deg,rgba(126,109,255,.18),rgba(255,255,255,.05))}
.station-profile{display:flex;gap:12px;align-items:center;padding:8px 6px 22px}
.station-avatar,.hero-logo{width:58px;height:58px;border-radius:18px;object-fit:cover;background:#fff}
.pill-time{margin-top:6px;display:inline-flex;padding:8px 12px;border-radius:999px;background:rgba(255,255,255,.25);color:#fff;font-size:13px}
.menu{display:grid;gap:10px;margin-top:10px}
.menu a{padding:14px 16px;border-radius:16px;color:var(--text);font-weight:600}
.menu a.active{background:var(--panel-alt);color:#6672ff;box-shadow:var(--shadow)}
.content{padding:18px 18px 28px 0}
.hero{display:flex;justify-content:space-between;align-items:center;padding:24px;border-radius:28px}
.hero-left{display:flex;gap:18px;align-items:center}
.hero h1{margin:0 0 8px;font-size:44px}
.hero p{margin:0;color:var(--muted)}
.status-line{display:flex;gap:14px;align-items:center;margin-top:14px;color:var(--text);font-weight:700;flex-wrap:wrap}
.status-dot{width:12px;height:12px;border-radius:50%;display:inline-block;background:#94a3b8}
.status-dot.online{background:#22c55e}
.status-dot.offline{background:#ef4444}
.master-wrap{display:grid;gap:20px;padding:20px}
.master-panel,.station-edit-card,.public-history{background:var(--card);border:1px solid var(--line);box-shadow:var(--shadow);border-radius:24px}
.master-panel{padding:24px}
.grid-two{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.span-two{grid-column:1/-1}
.cards-column{display:grid;gap:14px}
.station-edit-card{padding:0;overflow:hidden}
.station-edit-card summary{list-style:none;display:flex;gap:16px;align-items:center;padding:18px 20px;cursor:pointer;flex-wrap:wrap}
.padded-top{padding:0 20px 20px}
.actions-row{display:flex;gap:12px;flex-wrap:wrap}
.delete-row{padding:0 20px 20px}
.link-box{margin-top:16px;background:var(--linkbox);color:var(--linkbox-text);padding:18px;border-radius:16px;font-family:monospace;white-space:pre-wrap;overflow:auto}
.footer-brand{margin-top:22px;font-size:13px;color:var(--muted)}
.footer-brand a{color:#60a5fa;font-weight:700}
.dashboard-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:18px}
.player-frame{width:100%;border:0;border-radius:20px;background:#fff}
.player-frame-lg{height:560px}
.public-body{background:#0b1120;color:#fff}
.public-wrap{max-width:1200px;margin:0 auto;padding:30px 18px}
.public-brand{display:flex;gap:16px;align-items:center;margin-bottom:22px}
.public-title{font-size:42px;font-weight:800}
.public-player-frame{width:100%;height:640px;border:0;border-radius:22px;background:#fff;display:block}
.conn-grid{display:grid;gap:10px}
.conn-row{display:grid;grid-template-columns:160px 1fr auto;gap:10px;align-items:center;padding:10px 12px;border:1px solid var(--line);border-radius:14px;background:var(--panel-alt)}
.conn-row span{color:var(--muted);font-weight:700}
.conn-row strong{word-break:break-all}
.conn-row button{border:none;background:#1d4ed8;color:#fff;padding:8px 12px;border-radius:10px;cursor:pointer}
.players-mini-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.mini-player-card{padding:14px;border:1px solid var(--line);border-radius:16px;background:var(--panel-alt);display:grid;gap:6px}
.panel-header-line{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:14px}
.metrics-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
.metric-card{background:var(--panel-alt);border:1px solid var(--line);border-radius:18px;padding:16px;display:grid;gap:8px}
.metric-card span{color:var(--muted);font-weight:700}
.metric-card strong{font-size:28px}
.metric-card canvas{width:100%;height:120px;display:block}
.system-inline{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px}
.system-pill{padding:10px 14px;border-radius:999px;background:var(--panel-alt);border:1px solid var(--line)}
@media (max-width:1200px){.metrics-grid{grid-template-columns:1fr 1fr}}
@media (max-width:960px){
  .layout{grid-template-columns:1fr}
  .content{padding:0 18px 28px}
  .sidebar{margin:18px}
  .hero{flex-direction:column;align-items:flex-start;gap:18px}
  .grid-two,.dashboard-grid,.players-mini-grid,.metrics-grid{grid-template-columns:1fr}
  .conn-row{grid-template-columns:1fr}
  .player-frame-lg,.public-player-frame{height:420px}
}

.mini-preview-wrap{
  padding:0 20px 20px;
}
.mini-preview-frame{
  width:100%;
  height:240px;
  border:1px solid var(--line);
  border-radius:18px;
  background:#fff;
}