:root {
  --bg: #0f1216;
  --panel: #171c23;
  --border: #262d38;
  --text: #e6e9ef;
  --muted: #8b95a5;
  --accent: #4f9dff;
  --accent-hover: #3b86e6;
  --danger: #ff5c5c;
  --ok: #37c871;
}
* { box-sizing: border-box; }
/* The hidden attribute wins over any display set by a class. */
[hidden] { display: none !important; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
header.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 24px; border-bottom: 1px solid var(--border); background: var(--panel);
}
header.topbar .brand { font-weight: 600; }
/* A long machine name gives way: the links and the status stay in sight. */
@media (min-width: 641px) {
  header.topbar .brand { flex: 1 1 auto; min-width: 0; margin-right: 16px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  header.topbar nav { flex: none; white-space: nowrap; }
}
header.topbar nav a { margin-left: 18px; color: var(--muted); }
header.topbar nav a:hover { color: var(--text); }
.wrap { max-width: 960px; margin: 0 auto; padding: 24px 16px; }
.center { max-width: 420px; margin: 8vh auto; padding: 0 16px; }
.card {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: 10px; padding: 24px; margin-bottom: 20px;
}
h1 { font-size: 22px; margin: 0 0 18px; }
h2 { font-size: 17px; margin: 0 0 14px; }
label { display: block; margin: 12px 0 4px; color: var(--muted); font-size: 13px; }
input[type=text], input[type=password], input[type=number] {
  width: 100%; padding: 10px 12px; border-radius: 8px;
  border: 1px solid var(--border); background: #0c0f13; color: var(--text); font-size: 14px;
}
/* No native spinner: it is drawn light and breaks the dark field. */
input[type=number] { -moz-appearance: textfield; appearance: textfield; }
input[type=number]::-webkit-inner-spin-button,
input[type=number]::-webkit-outer-spin-button { -webkit-appearance: none; margin: 0; }
/* Sized and shaped like .btn.ghost so it lines up with the buttons next to it. */
select {
  -webkit-appearance: none; appearance: none; cursor: pointer;
  min-width: 180px; padding: 10px 38px 10px 14px; border-radius: 8px;
  border: 1px solid var(--border); color: var(--text);
  font: inherit; font-size: 14px; font-weight: 500; line-height: 1.5;
  background: #0c0f13 url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238b95a5' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E") no-repeat right 14px center;
}
select:hover, select:focus { border-color: var(--accent); outline: none; }
select:disabled, button:disabled { opacity: .5; cursor: not-allowed; }
button, .btn {
  display: inline-block; cursor: pointer; border: 0; border-radius: 8px;
  padding: 10px 16px; font-size: 14px; font-weight: 500;
  background: var(--accent); color: #fff;
}
button:hover, .btn:hover { background: var(--accent-hover); text-decoration: none; }
.btn.ghost { background: transparent; border: 1px solid var(--border); color: var(--text); }
.btn.danger { background: var(--danger); }
/* Close buttons: red text and border on the ghost button. */
.btn.close, .btn.ghost.close { background: transparent; border: 1px solid rgba(255, 92, 92, .6); color: var(--danger); }
.btn.close:hover, .btn.ghost.close:hover { background: #3a1d1d; border-color: var(--danger); }
/* A close button that is just a cross: square, the height of the buttons by it. */
.btn.close.x { width: 32px; height: 32px; padding: 0; display: inline-flex; align-items: center; justify-content: center; }
.btn.small.close.x { width: 28px; height: 28px; }
.btn.small { padding: 6px 10px; font-size: 13px; }
.btn.icon { width: 30px; height: 30px; padding: 0; display: inline-flex;
  align-items: center; justify-content: center; font-size: 14px; line-height: 1; text-decoration: none; }
/* Name of an icon button, shown at once on hover or keyboard focus. */
[data-tip] { position: relative; }
[data-tip]::after {
  content: attr(data-tip); position: absolute; bottom: calc(100% + 6px); left: 50%;
  transform: translateX(-50%); padding: 4px 8px; border-radius: 6px; white-space: nowrap;
  background: #0c0f13; border: 1px solid var(--border); color: var(--text);
  font-size: 12px; font-weight: 400; line-height: 1.4;
  opacity: 0; visibility: hidden; pointer-events: none; z-index: 10;
}
[data-tip]:hover::after, [data-tip]:focus-visible::after { opacity: 1; visibility: visible; }
.err { background: #3a1d1d; border: 1px solid #6b2b2b; color: #ffb3b3; padding: 10px 12px; border-radius: 8px; margin-bottom: 14px; font-size: 14px; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--border); font-size: 14px; }
th { color: var(--muted); font-weight: 500; }
.nowrap { white-space: nowrap; }
/* Row buttons stay on one line; the column is only as wide as they need. */
td.actions { width: 1%; white-space: nowrap; }
td.actions .row { flex-wrap: nowrap; justify-content: flex-end; }
.dot { display: inline-block; width: 9px; height: 9px; border-radius: 50%; margin-right: 6px; }
.dot.on { background: var(--ok); }
.dot.off { background: #555d6a; }
.muted { color: var(--muted); }
code, pre {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  background: #0c0f13; border: 1px solid var(--border); border-radius: 8px;
}
code { padding: 2px 6px; font-size: 13px; }
pre { padding: 12px; overflow-x: auto; font-size: 13px; white-space: pre-wrap; word-break: break-all; }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.spacer { flex: 1; }
#terminal { width: 100%; height: calc(100vh - 150px); }
/* The PIN lock of a new tab: the page stays hidden until it is unlocked. */
html.pin-wait body > :not(.pinlock) { visibility: hidden; }
.pinlock { position: fixed; inset: 0; z-index: 1000; display: flex; align-items: center; justify-content: center; padding: 16px;
  background: rgba(10, 13, 17, .92); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  opacity: 0; transition: opacity .3s ease; }
.pinlock.on { opacity: 1; }
.pinlock.done { opacity: 0; pointer-events: none; }
.pin-card { width: 100%; max-width: 300px; display: flex; flex-direction: column; align-items: center; text-align: center;
  transform: translateY(8px) scale(.98); transition: transform .3s ease; }
.pinlock.on .pin-card { transform: none; }
.pinlock.done .pin-card { transform: scale(1.03); }
.pin-ico { width: 54px; height: 54px; border-radius: 50%; display: flex; align-items: center; justify-content: center;
  background: #12202f; border: 1px solid var(--border); color: var(--accent); }
.pin-title { margin: 14px 0 18px; font-size: 18px; font-weight: 600; }
.pin-dots { display: flex; gap: 16px; }
.pin-dots i { width: 14px; height: 14px; border-radius: 50%; border: 2px solid var(--muted); transition: background .15s, border-color .15s, transform .15s; }
.pin-dots i.on { background: var(--accent); border-color: var(--accent); transform: scale(1.1); }
.pin-card.bad .pin-dots i.on { background: var(--danger); border-color: var(--danger); }
.pin-card.bad .pin-dots { animation: pin-shake .38s ease; }
@keyframes pin-shake { 20% { transform: translateX(-9px); } 40% { transform: translateX(8px); } 60% { transform: translateX(-5px); } 80% { transform: translateX(3px); } }
.pin-msg { min-height: 20px; margin: 14px 0 6px; font-size: 13px; color: var(--danger); }
.pin-pad { display: grid; grid-template-columns: repeat(3, 72px); gap: 14px; justify-content: center; }
.pin-pad button { width: 72px; height: 72px; border-radius: 50%; padding: 0; display: inline-flex; align-items: center; justify-content: center;
  background: #151a21; border: 1px solid var(--border); color: var(--text); font-size: 26px; font-weight: 400;
  -webkit-tap-highlight-color: transparent; touch-action: manipulation; transition: background .12s, transform .08s; }
.pin-pad button:hover { background: #1b222c; }
.pin-pad button:active { background: #12202f; transform: scale(.94); }
.pin-pad button[data-k="back"] { background: transparent; border-color: transparent; color: var(--muted); }
.pin-out { margin-top: 18px; }
.pin-out button { background: transparent; color: var(--muted); padding: 6px 12px; font-size: 14px; }
.pin-out button:hover { background: transparent; color: var(--text); }
@media (max-height: 560px) { .pin-pad { grid-template-columns: repeat(3, 58px); gap: 10px; } .pin-pad button { width: 58px; height: 58px; font-size: 22px; } }

/* Dialogs shared by the pages. */
dialog { background: var(--panel); color: var(--text); border: 1px solid var(--border);
  border-radius: 12px; padding: 0; max-width: 900px; width: 92vw; }
dialog::backdrop { background: rgba(0, 0, 0, .6); }
dialog:focus { outline: none; }
.dlg-h { padding: 14px 18px; border-bottom: 1px solid var(--border); display: flex; align-items: center; gap: 10px; }
.dlg-b { padding: 16px 18px; }
/* The account button in the top bar, and its dialog. */
header.topbar nav .acct-btn { margin-left: 22px; width: 34px; height: 34px; padding: 0; vertical-align: middle; }
#acctdlg { max-width: 480px; }
.acct-who { display: flex; align-items: center; gap: 12px; }
.acct-ava { width: 40px; height: 40px; border-radius: 50%; background: #12202f; border: 1px solid var(--border);
  display: inline-flex; align-items: center; justify-content: center; font-weight: 600; color: var(--accent); flex: none; }
.acct-name { font-weight: 600; }
.acct-mode { font-size: 13px; }
.acct h3 { font-size: 15px; margin: 18px 0 4px; }
.acct-hint { font-size: 13px; margin: 0 0 10px; }
.acct-keys { list-style: none; margin: 0; padding: 0; }
.acct-keys li { display: flex; align-items: center; gap: 10px; padding: 8px 0; border-bottom: 1px solid var(--border); font-size: 14px; }
.acct-keys li .muted { font-size: 12px; }
.acct-kicon { color: var(--accent); display: inline-flex; flex: none; }
.acct-kinfo { flex: 1; min-width: 0; overflow-wrap: anywhere; }
.acct-add { display: flex; gap: 8px; margin-top: 12px; }
.acct-add input { flex: 1; min-width: 0; }
.acct-add button { flex: none; }
.acct-msg { min-height: 20px; margin: 8px 0 0; font-size: 13px; color: var(--ok); }
.acct-msg.bad { color: var(--danger); }
.acct-pw { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin: 14px 0 0; padding-top: 12px;
  border-top: 1px solid var(--border); color: var(--text); font-size: 14px; cursor: pointer; }
.acct-pw b { display: block; font-weight: 500; }
.acct-pw small { display: block; font-size: 12px; margin-top: 2px; }
/* A switch: a checkbox drawn as a sliding knob. */
input.sw { -webkit-appearance: none; appearance: none; flex: none; width: 40px; height: 22px; margin: 0; border-radius: 11px;
  background: var(--border); position: relative; cursor: pointer; transition: background .2s; }
input.sw::after { content: ""; position: absolute; top: 3px; left: 3px; width: 16px; height: 16px; border-radius: 50%;
  background: #fff; transition: transform .2s; }
input.sw:checked { background: var(--accent); }
input.sw:checked::after { transform: translateX(18px); }
input.sw:disabled { opacity: .45; cursor: not-allowed; }
.acct-chpw { margin-top: 12px; padding-top: 12px; border-top: 1px solid var(--border); }
.acct-chpw summary { cursor: pointer; font-size: 14px; color: var(--text); }
.acct-pwform { display: grid; gap: 8px; margin-top: 10px; }
.acct-pwform button { justify-self: end; }
.acct-pin { margin-top: 12px; padding-top: 12px; border-top: 1px solid var(--border); }
.acct-pin summary { cursor: pointer; font-size: 14px; color: var(--text); }
.acct-pin small { color: var(--muted); font-size: 12px; }
.acct-pinform { display: grid; gap: 8px; margin-top: 10px; }
.acct-pinform input:not(:placeholder-shown) { letter-spacing: .4em; font-family: ui-monospace, Menlo, monospace; }
.acct-pinform .row { justify-content: flex-end; }
.acct-pingrace { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-top: 12px; font-size: 13px; color: var(--muted); }
.acct-pingrace[hidden] { display: none; }
.acct-pingrace select { width: auto; flex: none; }
.acct-pinmsg { margin: 8px 0 0; font-size: 13px; color: var(--ok, #3fb950); min-height: 0; }
.acct-pinmsg.bad { color: var(--danger); }
.acct-out { margin-top: 10px; padding-top: 14px; border-top: 1px solid var(--border); display: flex; justify-content: flex-end; }
/* Sign-in page. */
.or { display: flex; align-items: center; gap: 10px; color: var(--muted); font-size: 13px; margin: 18px 0 4px; }
.or::before, .or::after { content: ""; flex: 1; border-top: 1px solid var(--border); }
.keybtn { width: 100%; display: inline-flex; align-items: center; justify-content: center; gap: 8px; }

/* Phones. A table marked .stack turns each row into a block of
   "label: value" lines, the labels coming from data-l on the cells; a cell
   marked .lead goes first, as the row's title. */
@media (max-width: 640px) {
  header.topbar { flex-wrap: wrap; gap: 6px 12px; padding: 10px 12px; }
  header.topbar .brand { max-width: 100%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 14px; }
  header.topbar nav { display: flex; align-items: center; gap: 16px; max-width: 100%;
    overflow-x: auto; white-space: nowrap; scrollbar-width: none; }
  header.topbar nav::-webkit-scrollbar { display: none; }
  header.topbar nav > * { margin-left: 0 !important; flex: none; }
  .acct-add { flex-wrap: wrap; }
  .acct-add button { width: 100%; }
  .acct-keys li { flex-wrap: wrap; }
  .wrap { padding: 16px 12px; }
  .card { padding: 16px; border-radius: 8px; }
  h1 { font-size: 20px; }
  code { word-break: break-all; }
  /* 16px and up, or iOS zooms the page into a field on focus. */
  input[type=text], input[type=password], input[type=number], select, textarea { font-size: 16px; }
  table.stack thead { display: none; }
  table.stack, table.stack tbody { display: block; }
  table.stack tr { display: flex; flex-direction: column; gap: 2px; padding: 12px 0; border-bottom: 1px solid var(--border); }
  table.stack tr:first-child { padding-top: 0; }
  table.stack tr:last-child { border-bottom: 0; padding-bottom: 0; }
  table.stack td { display: flex; justify-content: flex-start; align-items: center; gap: 0;
    width: auto; padding: 2px 0; border: 0; text-align: right !important; overflow-wrap: anywhere; }
  table.stack td[data-l]::before { content: attr(data-l); flex: none; margin-right: auto; padding-right: 12px; color: var(--muted); font-size: 13px; text-align: left; }
  table.stack td.lead { order: -1; justify-content: flex-start; text-align: left !important; font-size: 16px; font-weight: 600; }
  table.stack td.actions { width: auto; padding-top: 8px; justify-content: flex-start; }
  table.stack td:empty { display: none; }
}