:root {
  --bg: #f4f5f7;
  --card: #ffffff;
  --text: #1b1d22;
  --muted: #6b7280;
  --line: #e3e5e9;
  --green: #15803d;
  --amber: #b45309;
  --red: #b91c1c;
  --accent: #1967d2; /* the icon's blue, darker to read on a light page */
  --shadow: 0 1px 2px rgb(0 0 0 / 6%);
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #16181d;
    --card: #1f2229;
    --text: #e8eaed;
    --muted: #9aa0a9;
    --line: #2d313a;
    --green: #4ade80;
    --amber: #fbbf24;
    --red: #f87171;
    --accent: #8ab4f8; /* the icon's ring */
    --shadow: none;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.45 -apple-system, BlinkMacSystemFont, "PingFang SC", "Noto Sans SC",
    "Microsoft YaHei", sans-serif;
}

main {
  max-width: 640px;
  margin: 0 auto;
  padding: calc(env(safe-area-inset-top) + 12px) 16px 16px;
}

#panel-view { padding-bottom: calc(env(safe-area-inset-bottom) + 96px); }

h1 { font-size: 22px; margin: 48px 0 24px; text-align: center; color: var(--accent); }

h2 { font-size: 13px; font-weight: 600; color: var(--muted); margin: 14px 0 6px; }

header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}

header .title { font-weight: 700; color: var(--accent); }

.badge:empty { display: none; }

.badge {
  font-size: 12px;
  padding: 2px 8px;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--muted);
}

button {
  font: inherit;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--text);
  padding: 10px 14px;
}

button:disabled { opacity: 0.4; }

button.link {
  margin-left: auto;
  border: none;
  background: none;
  color: var(--muted);
  padding: 4px;
}

section {
  background: var(--card);
  border-radius: 14px;
  padding: 10px 14px 12px;
  margin-bottom: 12px;
  box-shadow: var(--shadow);
}

section > h2:first-child { margin-top: 2px; }

.state-line { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; }

.state { font-size: 26px; font-weight: 700; }

.state.running { color: var(--green); }
.state.paused { color: var(--amber); }
.state.halted, .state.down { color: var(--red); }

.can-open { font-weight: 600; }
.can-open.yes { color: var(--green); }
.can-open.no { color: var(--red); }

dl {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 4px 14px;
  margin: 0;
}

dt { color: var(--muted); }
dd { margin: 0; text-align: right; font-variant-numeric: tabular-nums; }

.list { list-style: none; margin: 0; padding: 0; }

.list li {
  padding: 7px 0;
  border-top: 1px solid var(--line);
  overflow-wrap: anywhere;
}

.list li:first-child { border-top: none; }

.list .empty { color: var(--muted); }

.code { font: 12px/1.3 ui-monospace, SFMono-Regular, Menlo, monospace; color: var(--muted); }

.detail { display: block; font-size: 13px; color: var(--muted); }

.when { font-size: 12px; color: var(--muted); margin-right: 6px; font-variant-numeric: tabular-nums; }

.tag {
  font-size: 12px;
  padding: 0 6px;
  border-radius: 6px;
  border: 1px solid var(--line);
  margin-right: 6px;
}

.pos { color: var(--green); }
.neg { color: var(--red); }
.warn { color: var(--amber); }
.bad { color: var(--red); }

.banner {
  background: var(--red);
  color: #fff;
  font-weight: 700;
  font-size: 20px;
  text-align: center;
  border-radius: 14px;
  padding: 16px;
  margin-bottom: 12px;
}

.banner .detail { color: #fff; opacity: 0.85; font-weight: 400; }

footer { color: var(--muted); font-size: 13px; text-align: center; }
footer p { margin: 4px 0; }

.actions {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  padding: 10px 16px calc(env(safe-area-inset-bottom) + 10px);
  background: var(--bg);
  border-top: 1px solid var(--line);
}

.actions button { font-size: 18px; font-weight: 700; padding: 14px 0; }
.actions .pause { color: var(--amber); }
.actions .halt { color: #fff; background: var(--red); border-color: var(--red); }
.actions .resume { color: var(--green); }

form label { display: block; margin-bottom: 14px; color: var(--muted); }

form input {
  display: block;
  width: 100%;
  margin-top: 6px;
  font: inherit;
  font-size: 18px;
  padding: 12px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--text);
}

form button { width: 100%; font-size: 18px; font-weight: 700; padding: 14px; }

.error { color: var(--red); min-height: 1.5em; }

.modal {
  position: fixed;
  inset: 0;
  z-index: 20; /* above the toast: a confirmation must never be covered */
  background: rgb(0 0 0 / 45%);
  display: flex;
  align-items: flex-end;
  justify-content: center;
}

.modal[hidden] { display: none; }

.sheet {
  width: 100%;
  max-width: 640px;
  max-height: 85vh;
  overflow-y: auto;
  background: var(--card);
  border-radius: 16px 16px 0 0;
  padding: 16px 16px calc(env(safe-area-inset-bottom) + 16px);
}

.sheet h2 { font-size: 18px; color: var(--text); margin: 0 0 10px; }

.sheet label { display: block; margin-top: 12px; color: var(--muted); }

.sheet input {
  display: block;
  width: 100%;
  margin-top: 6px;
  font: inherit;
  font-size: 22px;
  letter-spacing: 4px;
  padding: 12px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: var(--bg);
  color: var(--text);
}

.sheet input::placeholder { letter-spacing: normal; font-size: 16px; }

.sheet-buttons { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 16px; }

.sheet-buttons button { font-weight: 700; padding: 14px 0; }

#modal-confirm.danger { background: var(--red); color: #fff; border-color: var(--red); }
#modal-confirm.go { background: var(--green); color: #fff; border-color: var(--green); }

.toast {
  position: fixed;
  z-index: 10;
  left: 16px;
  right: 16px;
  bottom: calc(env(safe-area-inset-bottom) + 88px);
  max-width: 608px;
  margin: 0 auto;
  background: var(--text);
  color: var(--bg);
  border-radius: 12px;
  padding: 12px 14px;
  font-weight: 600;
}