:root {
  --bg: #0f1115;
  --card: #181b22;
  --card-2: #1f232c;
  --text: #e8eaed;
  --muted: #9aa0aa;
  --line: #2a2f3a;
  --green: #2ec27e;
  --yellow: #e7b53b;
  --red: #e5534b;
  --gray: #7d828c;
  --accent: #4a8cff;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

body {
  max-width: 640px;
  margin: 0 auto;
  padding: 16px 14px 48px;
}

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

h1 { font-size: 20px; margin: 0; }
.subtitle { margin: 4px 0 0; color: var(--muted); font-size: 13px; }

.updated {
  text-align: right;
  font-size: 12px;
  color: var(--muted);
  white-space: nowrap;
}

.badge {
  display: inline-block;
  margin-top: 4px;
  padding: 2px 6px;
  border-radius: 6px;
  background: rgba(231, 181, 59, 0.18);
  color: var(--yellow);
  font-size: 11px;
}

.controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 14px;
}

.net-select { font-size: 14px; color: var(--muted); }

select, input[type="text"] {
  background: var(--card-2);
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 8px 10px;
  font-size: 15px;
}

select { margin-left: 6px; }

.ghost {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 8px 12px;
  font-size: 14px;
  cursor: pointer;
}
.ghost:active { transform: scale(0.98); }

.cards { display: flex; flex-direction: column; gap: 12px; }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-left: 4px solid var(--gray);
  border-radius: 14px;
  padding: 14px;
}
.card.color-green { border-left-color: var(--green); }
.card.color-yellow { border-left-color: var(--yellow); }
.card.color-red { border-left-color: var(--red); }
.card.color-gray { border-left-color: var(--gray); }

.card-head { display: flex; align-items: center; gap: 8px; }
.card-head h2 { font-size: 17px; margin: 0; }
.dot { font-size: 16px; }

.label { margin: 8px 0 0; color: var(--muted); font-size: 13px; }
.net-line { margin: 6px 0 0; font-size: 13px; color: var(--text); }

.actions { display: flex; gap: 8px; margin-top: 12px; flex-wrap: wrap; }

.act {
  flex: 1 1 auto;
  min-width: 96px;
  border: 1px solid var(--line);
  background: var(--card-2);
  color: var(--text);
  border-radius: 10px;
  padding: 10px 8px;
  font-size: 14px;
  cursor: pointer;
}
.act:active { transform: scale(0.98); }
.act.works { border-color: rgba(46,194,126,0.5); }
.act.down { border-color: rgba(229,83,75,0.5); }
.act.slow { border-color: rgba(231,181,59,0.5); }
.act:disabled { opacity: 0.5; cursor: default; }

.empty { color: var(--muted); text-align: center; padding: 24px 0; }

.add-block, .invite-block { margin-top: 18px; }
summary { cursor: pointer; color: var(--accent); font-size: 14px; padding: 6px 0; }
.add-form, .invite-form { display: flex; flex-direction: column; gap: 10px; padding-top: 8px; }
.hint { color: var(--muted); font-size: 12px; margin: 0; }
.muted { color: var(--muted); font-size: 12px; }

.toast {
  position: fixed;
  left: 50%;
  bottom: 22px;
  transform: translateX(-50%);
  background: var(--card-2);
  border: 1px solid var(--line);
  color: var(--text);
  padding: 10px 16px;
  border-radius: 12px;
  font-size: 14px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
  z-index: 20;
}
.toast.err { border-color: rgba(229,83,75,0.6); }
.hidden { display: none; }

.foot { margin-top: 28px; text-align: center; }
.foot p { color: var(--muted); font-size: 12px; }