:root {
  --background: #0b1017;
  --surface: #111923;
  --surface-raised: #172230;
  --border: #263548;
  --text: #eef4fb;
  --muted: #91a2b8;
  --accent: #4ade80;
  --accent-strong: #22c55e;
  --danger: #fb7185;
  --warning: #fbbf24;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background: var(--background);
}

* { box-sizing: border-box; }

body { margin: 0; min-width: 320px; background: var(--background); }

button, input { font: inherit; }

button {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.65rem 0.9rem;
  color: var(--text);
  background: var(--surface-raised);
  cursor: pointer;
}

button:hover { border-color: var(--muted); }
button:focus-visible, input:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
button:disabled { cursor: wait; opacity: 0.55; }
button.primary { border-color: var(--accent-strong); background: var(--accent-strong); color: #051109; font-weight: 700; }
button.danger { border-color: #9f3348; color: #ffdce2; background: #471b28; }

input {
  width: 100%;
  margin-top: 0.35rem;
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 0.55rem 0.65rem;
  color: var(--text);
  background: #0d151f;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 2rem;
  padding: 2rem clamp(1rem, 4vw, 4rem);
  border-bottom: 1px solid var(--border);
}

h1, h2, p { margin-top: 0; }
h1 { margin-bottom: 0.35rem; font-size: clamp(1.55rem, 3vw, 2.2rem); letter-spacing: -0.03em; }
h2 { margin-bottom: 0.4rem; font-size: 1rem; letter-spacing: 0.01em; }
p { margin-bottom: 0; color: var(--muted); line-height: 1.5; }

.live-indicator { color: var(--muted); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.8rem; }
.live-indicator span { display: inline-block; width: 8px; height: 8px; margin-right: 0.5rem; border-radius: 50%; background: var(--accent); box-shadow: 0 0 12px var(--accent); }

main { width: min(1500px, 100%); margin: 0 auto; padding: 1.25rem clamp(1rem, 4vw, 4rem) 4rem; }

.probe-strip { display: grid; grid-template-columns: repeat(3, 1fr); border: 1px solid var(--border); background: var(--surface); }
.probe-strip div { display: flex; justify-content: space-between; gap: 1rem; padding: 0.85rem 1rem; border-right: 1px solid var(--border); }
.probe-strip div:last-child { border-right: 0; }
.probe-strip span { color: var(--muted); }
.probe-strip strong { color: var(--warning); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
.probe-strip strong.ok { color: var(--accent); }
.probe-strip strong.fail { color: var(--danger); }

.workspace { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(320px, 0.75fr); gap: 1rem; margin-top: 1rem; }
.control-panel, .summary-panel, .distribution-grid > div, .history-section { border: 1px solid var(--border); background: var(--surface); padding: 1.1rem; }
.section-heading { display: flex; justify-content: space-between; align-items: start; gap: 1rem; margin-bottom: 1rem; }

.control-panel > .primary { width: 100%; margin-bottom: 0.85rem; }
.control-row { display: grid; grid-template-columns: minmax(100px, 0.7fr) minmax(100px, 0.7fr) 1.2fr; align-items: end; gap: 0.7rem; margin-top: 0.75rem; }
.danger-row { grid-template-columns: 1fr 1.4fr; }
label { color: var(--muted); font-size: 0.82rem; }
output { display: block; min-height: 2.4rem; margin-top: 1rem; padding: 0.7rem; border-left: 3px solid var(--border); color: var(--muted); background: #0d151f; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.78rem; }

.time-range { display: grid; grid-template-columns: 1fr 1fr; gap: 0.65rem; }
.metrics-grid { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid var(--border); border-left: 1px solid var(--border); margin-top: 1rem; }
.metrics-grid div { padding: 0.9rem; border-right: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.metrics-grid span { display: block; color: var(--muted); font-size: 0.75rem; }
.metrics-grid strong { display: block; margin-top: 0.3rem; font-size: 1.55rem; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }

.distribution-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; margin-top: 1rem; }
.distribution { margin-top: 1rem; }
.distribution-row { display: grid; grid-template-columns: minmax(80px, 1fr) 3fr auto; align-items: center; gap: 0.65rem; margin-top: 0.6rem; font-size: 0.8rem; }
.distribution-row span:first-child { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.bar { height: 7px; overflow: hidden; background: #253244; }
.bar i { display: block; height: 100%; background: var(--accent); }
.distribution-row strong { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }

.history-section { margin-top: 1rem; }
.auto-refresh { display: flex; align-items: center; gap: 0.45rem; white-space: nowrap; }
.auto-refresh input { width: auto; margin: 0; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 0.82rem; }
th, td { padding: 0.75rem 0.65rem; border-bottom: 1px solid var(--border); text-align: left; white-space: nowrap; }
th { color: var(--muted); font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.08em; }
td { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
.status-error { color: var(--danger); }
.status-success { color: var(--accent); }

@media (max-width: 900px) {
  .workspace, .distribution-grid { grid-template-columns: 1fr; }
  .probe-strip { grid-template-columns: 1fr; }
  .probe-strip div { border-right: 0; border-bottom: 1px solid var(--border); }
  .probe-strip div:last-child { border-bottom: 0; }
}

@media (max-width: 600px) {
  .topbar { align-items: start; padding-top: 1.25rem; }
  .live-indicator { display: none; }
  .control-row, .danger-row, .time-range { grid-template-columns: 1fr; }
  .section-heading { align-items: stretch; flex-direction: column; }
}