:root {
  --bg: #101218;
  --panel: #171b24;
  --line: #2a3140;
  --text: #edf1f7;
  --muted: #8b95a8;
  --accent: #3d9cf0;
  --ok: #3ecf8e;
  --warn: #f0b429;
  --row: #1d2330;
  --row-hover: #242c3c;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.45 "Segoe UI", Tahoma, sans-serif;
}

.app {
  max-width: 720px;
  margin: 0 auto;
  padding: 16px 14px 28px;
}

.header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

h1 {
  margin: 0;
  font-size: 20px;
  font-weight: 650;
  letter-spacing: 0.02em;
}

.status {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 12px;
}

.status.is-ok {
  color: var(--ok);
}

.status.is-error {
  color: #ff7b7b;
}

.count {
  flex-shrink: 0;
  margin-top: 4px;
  padding: 4px 8px;
  border-radius: 999px;
  background: var(--panel);
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 12px;
}

.search {
  display: block;
  margin-bottom: 12px;
}

.search input {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--panel);
  color: var(--text);
  outline: none;
}

.search input:focus {
  border-color: var(--accent);
}

.search input:disabled {
  opacity: 0.55;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}

.list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.group {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--panel);
  overflow: hidden;
}

.group-toggle,
.symbol-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border: 0;
  background: transparent;
  color: inherit;
  text-align: left;
  cursor: pointer;
}

.group-toggle {
  font-weight: 600;
}

.group-toggle:hover,
.symbol-toggle:hover {
  background: var(--row-hover);
}

.chevron {
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--muted);
  border-bottom: 2px solid var(--muted);
  transform: rotate(-45deg);
  transition: transform 0.16s ease;
  flex-shrink: 0;
}

.group.is-open > .group-toggle .chevron,
.symbol.is-open > .symbol-toggle .chevron {
  transform: rotate(45deg);
}

.group-meta {
  margin-left: auto;
  color: var(--muted);
  font-size: 12px;
  font-weight: 500;
}

.group-body,
.symbol-body {
  display: none;
}

.group.is-open > .group-body,
.symbol.is-open > .symbol-body {
  display: block;
}

.symbol {
  border-top: 1px solid var(--line);
}

.symbol-name {
  font-weight: 600;
}

.symbol-desc {
  color: var(--muted);
  font-size: 12px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.badges {
  margin-left: auto;
  display: flex;
  gap: 6px;
  flex-shrink: 0;
}

.badge {
  padding: 2px 7px;
  border-radius: 999px;
  font-size: 11px;
  border: 1px solid var(--line);
  color: var(--muted);
}

.badge.favorite {
  color: var(--warn);
  border-color: color-mix(in srgb, var(--warn) 45%, var(--line));
}

.badge.off {
  color: #ff9a9a;
}

.symbol-body {
  padding: 0 12px 12px 30px;
}

.details {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 6px 10px;
  padding: 10px 12px;
  border-radius: 8px;
  background: var(--row);
}

.details dt {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
}

.details dd {
  margin: 0;
  word-break: break-word;
}

.empty {
  padding: 28px 12px;
  text-align: center;
  color: var(--muted);
}