:root{
  color-scheme: dark;
  --bg:#0b0f14;
  --card:#121826;
  --card2:#0f1522;
  --muted:#9aa4b2;
  --text:#e6edf3;
  --border:#233044;
  --accent:#4f8cff;
  --danger:#ff5a5f;
  --ok:#9fc0ff;
  --green:#3fb950;
  --orange:#f0883e;
  --radius:14px;
  --radius-sm:12px;
  --shadow:0 10px 30px rgba(0,0,0,.35);
  --focus:0 0 0 3px rgba(79,140,255,.35);
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.35;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  text-rendering:optimizeLegibility;
  -webkit-tap-highlight-color:transparent;
}

/* Toast notifications */
.toast-root{
  position:fixed;left:0;right:0;top:0;padding:12px;
  padding-top:calc(12px + env(safe-area-inset-top, 0px));
  display:flex;flex-direction:column;gap:10px;align-items:center;
  pointer-events:none;z-index:2000;
}
.toast{
  pointer-events:auto;width:min(520px, calc(100% - 12px));
  background:rgba(18,24,38,.92);border:1px solid var(--border);
  border-radius:18px;box-shadow:var(--shadow);padding:10px 14px;
  display:flex;gap:10px;align-items:flex-start;
  animation:toast-in .25s ease;
}
@keyframes toast-in{from{opacity:0;transform:translateY(-12px)}to{opacity:1;transform:none}}
.toast .toast-dot{width:10px;height:10px;border-radius:999px;margin-top:5px;background:var(--muted)}
.toast.ok .toast-dot{background:var(--green)}
.toast.bad .toast-dot{background:var(--danger)}
.toast .toast-body{flex:1}
.toast .toast-title{font-weight:800;font-size:13px}
.toast .toast-msg{color:var(--text);font-size:13px;opacity:.92}
.toast-fade{animation:toast-out .2s ease forwards}
@keyframes toast-out{to{opacity:0;transform:translateY(-8px)}}

/* Skeleton */
.skeleton{
  position:relative;overflow:hidden;
  background:rgba(255,255,255,.05);
  border:1px solid rgba(35,48,68,.55);
  border-radius:12px;
}
.skeleton::after{
  content:"";position:absolute;inset:0;transform:translateX(-100%);
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.08),transparent);
  animation:skeleton-shimmer 1.1s infinite;
}
@keyframes skeleton-shimmer{100%{transform:translateX(100%)}}
.skeleton-line{height:12px;border-radius:10px;background:rgba(255,255,255,.06)}
.skeleton-line.lg{height:16px}
.skeleton-stack{display:flex;flex-direction:column;gap:8px;padding:12px}

/* Topbar */
.topbar{
  position:sticky;top:0;
  display:flex;align-items:center;justify-content:space-between;
  padding:12px 16px;border-bottom:1px solid var(--border);
  background:rgba(11,15,20,.92);backdrop-filter:blur(10px);z-index:50;
}
.topbar-actions{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.brand{font-weight:800;letter-spacing:.2px;font-size:16px}

/* Layout */
.container{max-width:1100px;margin:0 auto;padding:16px;padding-bottom:calc(16px + env(safe-area-inset-bottom, 0px))}
.grid{display:grid;gap:16px;grid-template-columns:1fr}
@media (min-width:900px){
  .grid{grid-template-columns:1fr 1fr}
  .grid .card.full{grid-column:1 / -1}
}

/* Cards */
.card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:14px;box-shadow:0 1px 0 rgba(255,255,255,.03) inset;
}
.card-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px}
h2{margin:0 0 10px 0;font-size:18px;letter-spacing:.2px}
.muted{color:var(--muted);font-size:14px}

/* Buttons */
.btn{
  border:1px solid var(--border);background:var(--card2);color:var(--text);
  border-radius:999px;min-height:44px;padding:10px 14px;
  cursor:pointer;font-weight:600;font-size:14px;
  transition:transform .08s ease,background .15s ease,border-color .15s ease,opacity .15s ease;
}
.btn:hover{border-color:rgba(79,140,255,.35)}
.btn:active{transform:scale(.98)}
.btn:disabled{opacity:.55;cursor:not-allowed}
.btn:focus-visible{box-shadow:var(--focus)}
.btn.primary{background:var(--accent);border-color:transparent;color:#071022}
.btn.primary:hover{filter:brightness(1.05)}
.btn.ghost{background:transparent}
.btn.danger{background:transparent;border-color:rgba(255,90,95,.6);color:var(--danger)}
.btn.sm{min-height:36px;padding:6px 12px;font-size:13px}

/* Pills / badges */
.pill{
  display:inline-block;padding:4px 8px;border-radius:999px;
  border:1px solid var(--border);color:var(--muted);font-size:12px;font-weight:600;
}
.pill.ok{border-color:rgba(63,185,80,.5);color:var(--green)}
.pill.bad{border-color:rgba(255,90,95,.6);color:var(--danger)}
.pill.accent{border-color:rgba(79,140,255,.5);color:var(--ok)}
.pill.warn{border-color:rgba(240,136,62,.5);color:var(--orange)}

/* Signal cards */
.signal-list{display:flex;flex-direction:column;gap:10px}
.signal-card{
  display:flex;flex-direction:column;gap:6px;
  padding:12px;border:1px solid var(--border);border-radius:var(--radius-sm);
  background:rgba(255,255,255,.02);
  animation:card-in .2s ease;
  transition:border-color .2s ease;
}
.signal-card:hover{border-color:rgba(79,140,255,.3)}
.signal-card.new{border-color:rgba(79,140,255,.6);box-shadow:0 0 20px rgba(79,140,255,.1)}
@keyframes card-in{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.signal-head{display:flex;align-items:center;justify-content:space-between;gap:8px;flex-wrap:wrap}
.signal-symbol{font-weight:800;font-size:16px}
.signal-side{font-weight:700;font-size:13px}
.signal-side.long{color:var(--green)}
.signal-side.short{color:var(--danger)}
.signal-meta{display:flex;gap:6px;flex-wrap:wrap;align-items:center}
.signal-prices{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(100px,1fr));gap:6px;
  margin-top:4px;
}
.signal-px{
  display:flex;flex-direction:column;gap:2px;
  padding:6px 8px;border-radius:8px;background:rgba(255,255,255,.03);
}
.signal-px-label{font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:.5px}
.signal-px-value{font-size:14px;font-weight:700;font-family:'SF Mono',Consolas,'Liberation Mono',Menlo,monospace}
.signal-text{
  font-size:13px;line-height:1.5;color:var(--text);opacity:.88;
  white-space:pre-line;margin-top:4px;
}
.signal-time{font-size:12px;color:var(--muted)}

/* Stats row */
.stats-row{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:16px}
.stat-box{
  flex:1 1 120px;
  display:flex;flex-direction:column;align-items:center;gap:2px;
  padding:10px;border-radius:var(--radius-sm);
  background:rgba(255,255,255,.02);border:1px solid var(--border);
}
.stat-value{font-size:22px;font-weight:800;font-family:'SF Mono',Consolas,monospace}
.stat-label{font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.3px}

/* Connection indicator */
.conn-dot{
  width:8px;height:8px;border-radius:999px;
  display:inline-block;margin-right:6px;
}
.conn-dot.online{background:var(--green);box-shadow:0 0 6px rgba(63,185,80,.5)}
.conn-dot.offline{background:var(--danger)}
.conn-dot.connecting{background:var(--orange);animation:pulse 1s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}

/* Filter bar */
.filter-bar{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:12px}
.filter-bar select{
  min-height:36px;padding:6px 10px;border-radius:var(--radius-sm);
  border:1px solid var(--border);background:var(--card2);color:var(--text);
  outline:none;font-size:13px;
}
.filter-bar select:focus{box-shadow:var(--focus);border-color:rgba(79,140,255,.7)}

/* Empty state */
.empty-state{
  text-align:center;padding:40px 16px;color:var(--muted);
}
.empty-state .empty-icon{font-size:40px;margin-bottom:12px;opacity:.5}
.empty-state .empty-text{font-size:15px}

/* Sound toggle */
.sound-btn{
  background:transparent;border:1px solid var(--border);
  color:var(--muted);border-radius:999px;min-height:36px;
  padding:6px 12px;cursor:pointer;font-size:14px;
  transition:color .15s,border-color .15s;
}
.sound-btn.active{color:var(--accent);border-color:rgba(79,140,255,.5)}

/* Push toggle */
.push-btn{
  background:transparent;border:1px solid var(--border);
  color:var(--muted);border-radius:999px;min-height:36px;
  padding:6px 12px;cursor:pointer;font-size:14px;
  transition:color .15s,border-color .15s;
}
.push-btn.active{color:var(--green);border-color:rgba(63,185,80,.5)}

/* Potential % badge */
.signal-potential{
  font-size:13px;font-weight:700;
  font-family:'SF Mono',Consolas,'Liberation Mono',Menlo,monospace;
}
.signal-potential.pos{color:var(--green)}
.signal-potential.neg{color:var(--danger)}

/* Mobile */
@media (max-width:720px){
  .container{padding:12px;padding-bottom:calc(12px + env(safe-area-inset-bottom, 0px))}
  .topbar{padding:10px 12px}
  .card{padding:12px}
  .stats-row{gap:8px}
  .stat-box{padding:8px}
  .stat-value{font-size:18px}
  .signal-prices{grid-template-columns:1fr 1fr}
}


/* Scrollbar */
::-webkit-scrollbar{width:6px;height:6px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:rgba(154,164,178,.25);border-radius:3px}
::-webkit-scrollbar-thumb:hover{background:rgba(154,164,178,.4)}