:root {
  --bg: #E6EBEE; --ink: #16212A; --ink2: #4A5965; --line: #C5D0D6; --raise: #F4F7F8;
  --accent: #3446C4; --on-accent: #fff;
  --rack: #121C24; --rack-slot: #0D151C; --rack-line: #223340; --rack-ink: #DCE5EA; --rack-dim: #8FA1AD;
  --track: #26394A; --fill: #7DB2FF;
  --ok: #2BD67B; --warn: #FFB43A; --bad: #FF6B6B;
  --ok-ink: #14663B; --bad-ink: #B3261E;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0D1317; --ink: #E3EAEE; --ink2: #9FB0BB; --line: #25323B; --raise: #141D24;
    --accent: #9AA7FF; --on-accent: #0D1317;
    --rack: #0A1015; --rack-slot: #070C10; --rack-line: #1D2B35;
    --ok-ink: #5FDB9A; --bad-ink: #FF8A80;
  }
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 15px/1.55 "Pretendard Variable", Pretendard, "Apple SD Gothic Neo", "Malgun Gothic", "Noto Sans KR", system-ui, sans-serif;
  font-variant-numeric: tabular-nums;
}
h1, h2 { margin: 0; letter-spacing: -0.01em; }
h1 { font-size: 18px; font-weight: 700; }
h2 { font-size: 18px; font-weight: 650; }
.muted { color: var(--ink2); }
.sm { font-size: 13px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

button { font: inherit; cursor: pointer; }
button:disabled { opacity: .6; cursor: progress; }
.primary { background: var(--accent); color: var(--on-accent); border: 0; border-radius: 6px; padding: 9px 16px; font-weight: 600; }
.ghost { background: transparent; color: var(--ink); border: 1px solid var(--line); border-radius: 6px; padding: 6px 12px; }
.ghost.sm { padding: 3px 10px; font-size: 13px; }
.link { background: none; border: 0; padding: 0; color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }

/* 로그인 */
.login { min-height: 100vh; display: grid; place-items: center; }
.login form { width: min(360px, calc(100% - 40px)); }
.login h1 { font-size: 24px; }
.login p.muted { margin: 4px 0 24px; }

/* 상단 */
#app { max-width: 1120px; margin: 0 auto; padding: 0 20px 64px; }
.top { display: flex; align-items: baseline; gap: 20px; padding: 22px 0 16px; flex-wrap: wrap; }
.host { margin: 0 auto 0 0; }
.host span + span { margin-left: 14px; }

/* 서버 랙 상태 띠 */
.rack {
  background: var(--rack); color: var(--rack-ink); border-radius: 10px; padding: 18px 20px;
  display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: 28px;
  box-shadow: inset 0 0 0 1px var(--rack-line);
}
.slots { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 6px; align-content: start; }
.slots li {
  display: flex; align-items: center; gap: 10px; padding: 8px 10px; min-width: 0;
  background: var(--rack-slot); border: 1px solid var(--rack-line); border-radius: 4px;
}
.led { flex: none; width: 9px; height: 9px; border-radius: 50%; background: var(--ok); box-shadow: 0 0 8px color-mix(in srgb, var(--ok) 70%, transparent); }
.led.off { border-radius: 0; background: var(--bad); box-shadow: none; clip-path: polygon(50% 0, 100% 100%, 0 100%); width: 11px; height: 10px; }
.slots .n { font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.slots .r { margin-left: auto; color: var(--rack-dim); font-size: 13px; white-space: nowrap; }
.slots li.down .r { color: var(--bad); font-weight: 700; }

.meter + .meter { margin-top: 16px; }
.mhead { display: flex; justify-content: space-between; align-items: baseline; color: var(--rack-dim); }
.mhead b { color: var(--rack-ink); font-size: 20px; font-weight: 650; }
.mhead .lv { font-size: 13px; margin-left: 8px; }
.track { height: 8px; margin: 6px 0 4px; background: var(--track); border-radius: 4px; overflow: hidden; }
.track i { display: block; height: 100%; background: var(--fill); border-radius: 4px; transition: width .5s ease; }
.meter.warn .track i, .meter.warn .lv { background: none; color: var(--warn); }
.meter.warn .track i { background: var(--warn); }
.meter.bad .track i { background: var(--bad); }
.meter.bad .lv { color: var(--bad); }
.meter small { color: var(--rack-dim); font-size: 13px; }

/* 호스팅 표 */
.hostings { margin-top: 36px; }
.bar { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; }
table { width: 100%; border-collapse: collapse; }
th { text-align: left; font-weight: 600; font-size: 13px; color: var(--ink2); padding: 8px 14px 8px 0; border-bottom: 1px solid var(--line); }
td { padding: 14px 14px 14px 0; border-bottom: 1px solid var(--line); vertical-align: top; }
.num { text-align: right; }
th.num, td.num { padding-right: 24px; }
.doms { list-style: none; margin: 0 0 6px; padding: 0; }
.doms li { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 10px; padding: 2px 0; }
.doms .d { font-weight: 550; word-break: break-all; }
.tag { font-size: 12px; font-weight: 600; padding: 0 8px; border-radius: 10px; border: 1px solid currentColor; white-space: nowrap; }
.tag.ok { color: var(--ok-ink); }
.tag.bad { color: var(--bad-ink); }
.tag.plain { color: var(--ink2); margin-left: 8px; }
.empty { padding: 36px 0; }

/* 서랍 */
#scrim { position: fixed; inset: 0; background: rgba(8, 14, 18, .45); z-index: 10; }
#drawer {
  position: fixed; top: 0; right: 0; bottom: 0; width: min(440px, 100%); z-index: 11; overflow: auto;
  background: var(--raise); border-left: 1px solid var(--line); padding: 20px 22px 32px;
}
#drawer:not([hidden]) { animation: slide .18s ease-out; }
@keyframes slide { from { transform: translateX(20px); opacity: 0; } }
#drawer > header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 20px; }
label { display: block; margin: 0 0 14px; font-weight: 600; }
input, select {
  display: block; width: 100%; margin-top: 6px; padding: 9px 10px; font: inherit; font-weight: 400;
  color: inherit; background: var(--bg); border: 1px solid var(--line); border-radius: 6px;
}
label small { display: block; margin-top: 4px; font-weight: 400; color: var(--ink2); }
label.check { display: flex; align-items: center; gap: 8px; font-weight: 500; }
label.check input { width: auto; margin: 0; }
.err { color: var(--bad-ink); min-height: 1.4em; margin: 0 0 8px; }
.steps { list-style: none; margin: 0 0 20px; padding: 0; }
.steps li { display: flex; gap: 10px; padding: 6px 0; }
.steps .ok { color: var(--ok-ink); }
.steps .bad { color: var(--bad-ink); }
.secret { display: flex; gap: 10px; align-items: center; padding: 10px 12px; margin: 6px 0 8px; background: var(--bg); border: 1px dashed var(--ink2); border-radius: 6px; font-size: 17px; font-weight: 600; word-break: break-all; }
.secret span { user-select: all; margin-right: auto; }

#toast {
  position: fixed; left: 50%; bottom: 24px; transform: translate(-50%, 12px); z-index: 20; max-width: min(520px, calc(100% - 32px));
  padding: 10px 16px; background: var(--ink); color: var(--bg); border-radius: 6px; opacity: 0; pointer-events: none; transition: opacity .2s, transform .2s;
}
#toast.on { opacity: 1; transform: translate(-50%, 0); }

@media (max-width: 760px) {
  .rack { grid-template-columns: 1fr; gap: 20px; }
  .slots { grid-template-columns: 1fr; }
  thead { display: none; }
  table, tbody, tr, td { display: block; }
  tr { padding: 12px 0; border-bottom: 1px solid var(--line); }
  td { border: 0; padding: 4px 0; }
  td.num, th.num { text-align: left; padding-right: 0; }
  td[data-l]::before { content: attr(data-l); display: block; font-size: 13px; color: var(--ink2); }
}
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}

/* 파일 권한 */
#drawer.wide { width: min(780px, 100%); }
#crumbs { margin-bottom: 12px; word-break: break-all; }
#f-list { margin-bottom: 16px; }
#f-list td { padding: 8px 12px 8px 0; word-break: break-all; }
#f-list select { width: auto; max-width: 100%; margin: 0; padding: 4px 8px; }
#f-list .tag { margin-left: 8px; }


/* 경고 배너 */
:root { --warn-ink: #8A5400; }
@media (prefers-color-scheme: dark) { :root { --warn-ink: #FFB43A; } }
h3 { font-size: 15px; font-weight: 650; margin: 0 0 8px; }
#banner { margin: 0 0 14px; padding: 10px 16px; background: var(--raise); border: 1px solid var(--line); border-left: 6px solid var(--warn-ink); border-radius: 6px; }
#banner.crit { border-left-color: var(--bad-ink); }
#banner p { margin: 2px 0; }
#banner b { color: var(--warn-ink); }
#banner.crit b { color: var(--bad-ink); }

/* 서버 추이 */
.monitor { margin-top: 36px; }
.monitor h3 { margin: 28px 0 6px; }
.tools { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.seg { display: inline-flex; border: 1px solid var(--line); border-radius: 6px; overflow: hidden; }
.seg button { background: transparent; color: var(--ink); border: 0; padding: 4px 12px; font-size: 13px; }
.seg button + button { border-left: 1px solid var(--line); }
.seg button[aria-pressed="true"] { background: var(--accent); color: var(--on-accent); font-weight: 600; }
.charts { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px 24px; }
figure { margin: 0; }
figcaption { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 4px; min-height: 1.6em; }
.chart { position: relative; }
.plot { display: block; width: 100%; height: auto; }
.plot .grid { stroke: var(--line); stroke-width: 1; }
.plot .thr { stroke: var(--ink2); stroke-width: 1; stroke-dasharray: 4 4; opacity: .6; }
.plot .ax { fill: var(--ink2); font-size: 11px; }
.plot .line { fill: none; stroke: var(--accent); stroke-width: 2; stroke-linejoin: round; stroke-linecap: round; }
.plot .cross { stroke: var(--ink2); stroke-width: 1; }
.plot .dotp { fill: var(--accent); stroke: var(--bg); stroke-width: 2; }
.tip { position: absolute; top: 4px; transform: translateX(-50%); padding: 2px 8px; font-size: 12px; white-space: nowrap; pointer-events: none; background: var(--ink); color: var(--bg); border-radius: 4px; }
.events { list-style: none; margin: 0; padding: 0; }
.events li { display: flex; flex-wrap: wrap; gap: 2px 14px; padding: 8px 0; border-bottom: 1px solid var(--line); }
.events .lvl { min-width: 60px; font-weight: 650; }
.events .when { min-width: 92px; }
.events .crit .lvl, .events .warn .lvl { color: var(--bad-ink); }
.events .ok .lvl { color: var(--ok-ink); }

/* 계정 관리·설정 */
td .ghost.sm + .ghost.sm { margin-left: 6px; }
.dz { margin-top: 28px; padding-top: 18px; border-top: 1px solid var(--line); }
.danger { background: var(--bad-ink); color: #fff; border: 0; border-radius: 6px; padding: 9px 16px; font-weight: 600; }
.row { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 12px; }