:root {
  --bg: #f4f5f7;
  --surface: #ffffff;
  --text: #16181d;
  --muted: #6b7180;
  --line: #e2e5ea;
  --accent: #2f6fed;
  --ok: #138a4b;
  --warn: #b26a00;
  --danger: #c62f2f;
  --up: #d23b3b;   /* 국내 관례: 상승 빨강 */
  --down: #2a62c9; /* 하락 파랑 */
  --badge: #eef0f4;
  --shadow: 0 1px 2px rgba(0, 0, 0, .06);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #101216;
    --surface: #181b21;
    --text: #e8eaee;
    --muted: #9aa1ad;
    --line: #2a2e36;
    --accent: #6b9bff;
    --ok: #3ec27d;
    --warn: #e0a340;
    --danger: #ff6b6b;
    --up: #ff6b6b;
    --down: #6ea0ff;
    --badge: #232730;
    --shadow: none;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #101216; --surface: #181b21; --text: #e8eaee; --muted: #9aa1ad; --line: #2a2e36;
  --accent: #6b9bff; --ok: #3ec27d; --warn: #e0a340; --danger: #ff6b6b; --up: #ff6b6b; --down: #6ea0ff;
  --badge: #232730; --shadow: none; color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font: 15px/1.45 system-ui, -apple-system, "Segoe UI", "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
  -webkit-text-size-adjust: 100%;
}
.hidden { display: none !important; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.error { color: var(--danger); min-height: 1.2em; }
.spacer { flex: 1; }

.login { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.login-card { width: min(360px, 100%); display: grid; gap: 12px; }
.login-card h1 { margin: 0; font-size: 24px; }

.top {
  position: sticky; top: 0; z-index: 5;
  display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
  padding: 10px 16px; background: var(--surface); border-bottom: 1px solid var(--line);
}
.brand { font-weight: 700; font-size: 17px; }
.badge { background: var(--badge); border-radius: 999px; padding: 2px 10px; font-size: 13px; font-weight: 600; }
.badge.live { background: var(--danger); color: #fff; }
.badge.paper { background: var(--accent); color: #fff; }
.badge.halted { background: var(--danger); color: #fff; }
.badge.paused { background: var(--warn); color: #fff; }
.badge.running { background: var(--ok); color: #fff; }
.dot { width: 10px; height: 10px; border-radius: 50%; background: var(--muted); display: inline-block; }
.dot.on { background: var(--ok); }
.dot.off { background: var(--danger); }

#banners { padding: 0 16px; }
.banner { margin-top: 10px; padding: 10px 12px; border-radius: 10px; font-size: 14px; border: 1px solid var(--line); background: var(--surface); }
.banner.danger { border-color: var(--danger); color: var(--danger); }
.banner.warn { border-color: var(--warn); color: var(--warn); }
.banner.info { border-color: var(--accent); color: var(--accent); }

.controls { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 8px; padding: 12px 16px 0; }
@media (max-width: 560px) { .controls { grid-template-columns: repeat(2, minmax(0, 1fr)); } }

button {
  font: inherit; font-weight: 600; cursor: pointer;
  border-radius: 10px; padding: 10px 12px; min-height: 44px;
  border: 1px solid var(--line); background: var(--surface); color: var(--text);
}
button:disabled { opacity: .5; cursor: not-allowed; }
button.small { min-height: 32px; padding: 4px 10px; font-size: 13px; }
button.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
button.ok { background: var(--ok); border-color: var(--ok); color: #fff; }
button.warn { background: var(--warn); border-color: var(--warn); color: #fff; }
button.danger { background: var(--danger); border-color: var(--danger); color: #fff; }
button.outline { background: transparent; }
button.danger.outline { color: var(--danger); }
button.warn.outline { color: var(--warn); }
button.ghost { background: transparent; }
button.active-mode { outline: 3px solid var(--accent); outline-offset: 1px; }

.tabs { display: flex; gap: 4px; overflow-x: auto; padding: 12px 16px 0; scrollbar-width: none; }
.tabs button { min-height: 36px; padding: 6px 12px; border-radius: 999px; white-space: nowrap; }
.tabs button.active { background: var(--text); color: var(--surface); border-color: var(--text); }

main { padding: 12px 16px 24px; display: grid; gap: 12px; max-width: 1100px; margin: 0 auto; }
main > section { display: grid; gap: 12px; }
.grid { display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 14px; box-shadow: var(--shadow); min-width: 0; }
.card h2 { margin: 0 0 10px; font-size: 16px; }

.kv { display: grid; grid-template-columns: auto 1fr; gap: 4px 12px; font-size: 14px; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; text-align: right; font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
.up { color: var(--up); }
.down { color: var(--down); }

.progress-wrap { margin-top: 12px; }
.progress-label { display: flex; justify-content: space-between; font-size: 13px; color: var(--muted); }
.progress { height: 10px; background: var(--badge); border-radius: 999px; overflow: hidden; margin-top: 4px; }
.progress > div { height: 100%; width: 0; background: var(--accent); transition: width .3s; }
.spark { width: 100%; height: 70px; margin-top: 10px; display: block; }
.spark path.line { fill: none; stroke: var(--accent); stroke-width: 1.5; vector-effect: non-scaling-stroke; }
.spark path.area { fill: var(--accent); opacity: .08; }
.spark line.base { stroke: var(--muted); stroke-dasharray: 3 3; stroke-width: 1; vector-effect: non-scaling-stroke; }

.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { padding: 7px 6px; border-bottom: 1px solid var(--line); text-align: right; white-space: nowrap; font-variant-numeric: tabular-nums; }
th:first-child, td:first-child { text-align: left; }
th { color: var(--muted); font-weight: 600; font-size: 12px; }
td.wrap { white-space: normal; text-align: left; min-width: 180px; }
td .sub { display: block; color: var(--muted); font-size: 12px; }
tr.empty td { text-align: center; color: var(--muted); }

.form-grid { display: grid; gap: 10px; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); align-items: end; }
.form-grid.settings { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }
label { display: grid; gap: 4px; font-size: 13px; color: var(--muted); }
label.check { display: flex; align-items: center; gap: 8px; color: var(--text); font-size: 14px; }
input, select {
  font: inherit; color: var(--text); background: var(--bg);
  border: 1px solid var(--line); border-radius: 10px; padding: 9px 10px; min-height: 42px; width: 100%;
}
input[type="checkbox"] { width: 20px; height: 20px; min-height: 0; }
.mode-row { display: flex; gap: 8px; flex-wrap: wrap; }
.mode-row button { flex: 1; min-width: 90px; }
.secret { display: block; padding: 10px; background: var(--badge); border-radius: 8px; font-size: 16px; letter-spacing: 1px; overflow-wrap: anywhere; margin: 8px 0; }

dialog { border: 0; padding: 0; background: transparent; width: min(420px, calc(100% - 32px)); }
dialog::backdrop { background: rgba(0, 0, 0, .45); }
dialog .card { display: grid; gap: 10px; }

.toast { position: fixed; left: 50%; bottom: 20px; transform: translateX(-50%); background: var(--text); color: var(--surface); padding: 10px 16px; border-radius: 10px; font-size: 14px; z-index: 50; max-width: calc(100% - 32px); }
footer { text-align: center; padding: 0 16px 24px; }