:root {
  --bg: #0a1a30; --bg-soft: #0e2038; --panel: #13294a; --stroke: #274468;
  --txt: #eaf2fb; --dim: #8ba3c2; --accent: #22c9e6; --gold: #f2bd5d;
  --up: #2fbf8f; --down: #e5604f; --radius: 14px;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg); color: var(--txt);
  font-family: Vazirmatn, Tahoma, system-ui, sans-serif; min-height: 100vh;
}

.ex-top {
  display: flex; align-items: center; gap: 14px;
  padding: 12px 18px; border-bottom: 1px solid var(--stroke); background: var(--bg-soft);
  position: sticky; top: 0; z-index: 5;
}
.ex-back { color: var(--dim); text-decoration: none; font-weight: 700; font-size: 14px; }
.ex-back:hover { color: var(--accent); }
.ex-brand b { color: var(--txt); } .ex-brand small { color: var(--dim); margin-inline-start: 6px; }
.ex-spacer { flex: 1; }

.ex-wrap { max-width: 1000px; margin: 0 auto; padding: 18px; }

.ex-controls {
  display: flex; flex-wrap: wrap; gap: 12px; align-items: end; margin-bottom: 16px;
}
.ex-field { display: flex; flex-direction: column; gap: 5px; font-size: 12px; color: var(--dim); }
.ex-field select {
  background: var(--panel); color: var(--txt); border: 1px solid var(--stroke);
  border-radius: 10px; padding: 9px 12px; font-family: inherit; font-size: 14px; min-width: 150px;
}
.ex-field select:focus { outline: none; border-color: var(--accent); }
.ex-btn {
  background: var(--accent); color: #06283a; border: 0; border-radius: 10px;
  padding: 10px 18px; font-family: inherit; font-weight: 800; font-size: 14px; cursor: pointer;
}
.ex-btn:hover { filter: brightness(1.08); }
.ex-btn:disabled { opacity: .5; cursor: default; }

.ex-card {
  background: var(--bg-soft); border: 1px solid var(--stroke); border-radius: var(--radius); padding: 16px;
}
.ex-meta { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 12px; }
.pill {
  background: var(--panel); border: 1px solid var(--stroke); border-radius: 999px;
  padding: 4px 12px; font-size: 12px; color: var(--dim);
}
.pill.strong { color: var(--txt); font-weight: 800; }
.pill.up { color: var(--up); border-color: rgba(47,191,143,.5); }
.pill.down { color: var(--down); border-color: rgba(229,96,79,.5); }

.ex-canvas-box { position: relative; width: 100%; height: 440px; }
#chart { width: 100%; height: 100%; }
.ex-hint { margin-top: 8px; color: var(--dim); font-size: 12px; text-align: center; }

.ex-stats { display: flex; flex-wrap: wrap; gap: 10px 22px; margin-top: 14px; padding-top: 14px; border-top: 1px solid var(--stroke); }
.stat { font-size: 13px; }
.stat b { display: block; color: var(--dim); font-weight: 600; font-size: 11px; margin-bottom: 2px; }
.stat span { color: var(--txt); font-weight: 700; font-variant-numeric: tabular-nums; }
.stat span.up { color: var(--up); } .stat span.down { color: var(--down); }

.ex-note { margin-top: 12px; color: var(--gold); font-size: 12.5px; min-height: 18px; }
.ex-note.err { color: var(--down); }

@media (max-width: 560px) {
  .ex-canvas-box { height: 320px; }
  .ex-field select { min-width: 120px; }
}