/* ============================================================================
   Remote Support — design system
   Dark-first ops console. Warm-graphite neutrals, mint signal, copper accent.
   Typography pairs the platform mono (structure, labels, identifiers) with the
   platform sans (prose, controls) — no webfonts, this box may have no internet.
   ========================================================================= */

:root {
  /* --- neutrals: warm graphite, faint violet cast (not the usual blue-gray) */
  --bg:            #0b0a0d;
  --bg-deep:       #070609;
  --surface:       #131218;
  --surface-2:     #1a1922;
  --surface-3:     #211f2b;
  --well:          #0e0d12;

  --line:          #232230;
  --line-strong:   #333042;
  --line-hover:    #474357;

  --text:          #eceaf2;
  --text-dim:      #a6a0b5;   /* 7.4:1 on --surface */
  --text-faint:    #857f96;   /* 4.9:1 on --surface  */

  /* --- signal palette */
  --mint:          #3ddc97;   /* brand + primary action + "live" */
  --mint-bright:   #5ff0b1;
  --mint-deep:     #1c6f52;
  --mint-glow:     rgba(61, 220, 151, .14);
  --mint-ink:      #04140c;

  --copper:        #e9a05c;   /* warnings, consent, secondary highlight */
  --copper-deep:   #59401f;
  --iris:          #9aa2ff;   /* informational: direct connections, links */
  --iris-deep:     #2f3164;
  --danger:        #f4626f;
  --danger-text:   #ff9aa2;
  --danger-deep:   #4d2229;

  /* --- shape + motion */
  --r-sm: 7px;
  --r-md: 10px;
  --r-lg: 14px;
  --r-xl: 18px;

  --ease-out-quart: cubic-bezier(.25, 1, .5, 1);
  --ease-out-expo:  cubic-bezier(.16, 1, .3, 1);
  --t-fast: 130ms var(--ease-out-quart);
  --t-mid:  260ms var(--ease-out-quart);

  --shadow-lift: 0 1px 2px rgba(0,0,0,.4), 0 12px 28px -14px rgba(0,0,0,.8);
  --shadow-pop:  0 24px 70px -20px rgba(0,0,0,.85), 0 2px 6px rgba(0,0,0,.5);

  --sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
          "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", "Cascadia Mono",
          "Segoe UI Mono", Menlo, Consolas, "Liberation Mono", monospace;
}

*, *::before, *::after { box-sizing: border-box; }

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

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.55 var(--sans);
  letter-spacing: .001em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Ambient page texture: a faint engineering grid plus one cool bloom.
   Fixed, pointer-transparent, and never applied to the live session view. */
body:not(.viewer-body)::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right,  rgba(255,255,255,.020) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,.020) 1px, transparent 1px);
  background-size: 68px 68px;
  -webkit-mask-image: radial-gradient(120% 80% at 50% -10%, #000 15%, transparent 70%);
          mask-image: radial-gradient(120% 80% at 50% -10%, #000 15%, transparent 70%);
}

body:not(.viewer-body)::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(70% 55% at 12% -8%,  rgba(61,220,151,.09), transparent 62%),
    radial-gradient(60% 50% at 92% 4%,   rgba(154,162,255,.06), transparent 60%),
    radial-gradient(90% 60% at 50% 108%, rgba(233,160,92,.045), transparent 65%);
}

/* Everything real sits above the ambient layers. #modal-root and #toast are
   deliberately left out: their children are fixed with their own z-index and
   must stack against the root, not inside a container's stacking context. */
#login, #app, .center-shell { position: relative; z-index: 1; }

a {
  color: var(--mint);
  text-decoration-color: rgba(61,220,151,.35);
  text-underline-offset: 3px;
  transition: color var(--t-fast);
}
a:hover { color: var(--mint-bright); }

h1, h2, h3 { margin: 0; font-weight: 600; letter-spacing: -.012em; }
h1 { font-size: 18px; }
h2 { font-size: 16px; }
h3 { font-size: 14px; }

p { margin: 0 0 12px; }

::selection { background: rgba(61,220,151,.28); color: #fff; }

/* --------------------------------------------------------------- utilities */

.hidden { display: none !important; }
[hidden] { display: none !important; }

.mono { font-family: var(--mono); font-size: 12px; letter-spacing: 0; }
.dim  { color: var(--text-dim); }
.faint { color: var(--text-faint); font-size: 13px; }
.row  { display: flex; align-items: center; gap: 10px; }
.wrap { flex-wrap: wrap; }
.spacer { flex: 1 1 auto; }

/* Small structural label used across panels, cards, tables and forms. */
.eyebrow {
  font-family: var(--mono);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: .13em;
  text-transform: uppercase;
  color: var(--text-faint);
}

/* ----------------------------------------------------------- focus states */

:where(button, [href], input, select, textarea, [tabindex]):focus-visible {
  outline: 2px solid var(--mint);
  outline-offset: 2px;
  border-radius: var(--r-sm);
}

/* --------------------------------------------------------------- controls */

button {
  font: 500 13.5px/1.2 var(--sans);
  letter-spacing: .005em;
  padding: 8px 14px;
  border-radius: var(--r-sm);
  border: 1px solid var(--line-strong);
  background: var(--surface-2);
  color: var(--text);
  cursor: pointer;
  white-space: nowrap;
  transition: border-color var(--t-fast), background var(--t-fast),
              color var(--t-fast), transform var(--t-fast), box-shadow var(--t-fast);
}
button:hover:not(:disabled) { background: var(--surface-3); border-color: var(--line-hover); }
button:active:not(:disabled) { transform: translateY(1px); }
button:disabled { opacity: .4; cursor: not-allowed; }

button.primary {
  background: var(--mint);
  border-color: var(--mint);
  color: var(--mint-ink);
  font-weight: 650;
}
button.primary:hover:not(:disabled) {
  background: var(--mint-bright);
  border-color: var(--mint-bright);
  box-shadow: 0 6px 20px -10px rgba(61,220,151,.9);
}

button.danger {
  color: var(--danger-text);
  border-color: var(--danger-deep);
  background: rgba(244,98,111,.06);
}
button.danger:hover:not(:disabled) {
  background: rgba(244,98,111,.14);
  border-color: var(--danger);
  color: #ffd0d4;
}

button.ghost {
  background: transparent;
  border-color: transparent;
  color: var(--text-dim);
}
button.ghost:hover:not(:disabled) { background: var(--surface-2); color: var(--text); }
button.ghost.danger { background: transparent; border-color: transparent; }
button.ghost.danger:hover:not(:disabled) { background: rgba(244,98,111,.12); }

button.small { padding: 5px 11px; font-size: 12.5px; border-radius: 6px; }

/* ------------------------------------------------------------------ forms */

input, select, textarea {
  font: 14px/1.4 var(--sans);
  width: 100%;
  padding: 9px 12px;
  border-radius: var(--r-sm);
  border: 1px solid var(--line);
  background: var(--well);
  color: var(--text);
  transition: border-color var(--t-fast), box-shadow var(--t-fast), background var(--t-fast);
}
/* --text-faint keeps placeholders at ~5:1 on the input well, not decorative mush */
input::placeholder, textarea::placeholder { color: var(--text-faint); opacity: 1; }
input:hover:not(:focus), select:hover:not(:focus) { border-color: var(--line-strong); }
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--mint-deep);
  background: #0b0a0f;
  box-shadow: 0 0 0 3px var(--mint-glow);
}
select {
  appearance: none;
  padding-right: 34px;
  background-image: linear-gradient(45deg, transparent 50%, var(--text-faint) 50%),
                    linear-gradient(135deg, var(--text-faint) 50%, transparent 50%);
  background-position: calc(100% - 17px) calc(50% + 1px), calc(100% - 12px) calc(50% + 1px);
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
}

label {
  display: block;
  margin-bottom: 6px;
  font-family: var(--mono);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: .13em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.field { margin-bottom: 15px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

/* Checkbox rows are sentences, not labels — opt them back out of the mono cap style. */
label.check {
  display: flex;
  align-items: flex-start;
  gap: 9px;
  margin-bottom: 0;
  font: 13.5px/1.45 var(--sans);
  letter-spacing: normal;
  text-transform: none;
  color: var(--text);
  cursor: pointer;
}
label.check input {
  width: auto;
  flex: none;
  margin-top: 1px;
  accent-color: var(--mint);
  padding: 0;
}

/* ------------------------------------------------------------ brand mark */

.brand { display: flex; align-items: center; gap: 11px; }

.brand-mark {
  position: relative;
  width: 32px;
  height: 32px;
  flex: none;
  display: grid;
  place-items: center;
  border-radius: 9px;
  background:
    linear-gradient(150deg, rgba(61,220,151,.22), rgba(154,162,255,.14) 55%, transparent),
    var(--surface-2);
  border: 1px solid var(--line-strong);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.06);
  font: 700 12px/1 var(--mono);
  letter-spacing: .04em;
  color: var(--mint);
}
/* a single lit node on the mark — the product in one glyph */
.brand-mark::after {
  content: "";
  position: absolute;
  top: -2px;
  right: -2px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--mint);
  box-shadow: 0 0 0 2px var(--bg), 0 0 10px rgba(61,220,151,.8);
}
.brand h1 { font-size: 15px; font-weight: 600; letter-spacing: -.01em; }
.brand .brand-sub,
.card-header .brand-sub {
  display: block;
  margin-top: 1px;
  font-family: var(--mono);
  font-size: 9.5px;
  font-weight: 600;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--text-faint);
}

/* --------------------------------------------------------- particle field */

.bg-field {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 1;
  transition: opacity 600ms var(--ease-out-quart);
}
.bg-field canvas { display: block; width: 100%; height: 100%; }
/* Inside the console it is a whisper, not a feature. */
body[data-screen="console"] .bg-field { opacity: .38; }

/* ------------------------------------------------------------------ login */

.login-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(340px, .95fr);
  align-items: center;
  gap: clamp(32px, 7vw, 90px);
  max-width: 1080px;
  margin: 0 auto;
  padding: 40px 28px;
}

.login-aside { max-width: 460px; }
.login-aside .brand { margin-bottom: 34px; }

.login-headline {
  font-size: clamp(28px, 4.2vw, 40px);
  line-height: 1.08;
  font-weight: 600;
  letter-spacing: -.03em;
  margin: 0 0 16px;
  text-wrap: balance;
}
.login-headline em {
  font-style: normal;
  color: var(--mint);
}
.login-lede {
  color: var(--text-dim);
  font-size: 15px;
  line-height: 1.6;
  max-width: 42ch;
  margin-bottom: 30px;
}

.login-facts {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}
.login-facts li {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 11px 2px;
  border-bottom: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .11em;
  text-transform: uppercase;
  color: var(--text-dim);
}
.login-facts li::before {
  content: "";
  width: 5px;
  height: 5px;
  flex: none;
  border-radius: 1px;
  background: var(--mint);
  transform: translateY(-1px);
  box-shadow: 0 0 8px rgba(61,220,151,.6);
}
.login-facts li:nth-child(2)::before { background: var(--copper); box-shadow: 0 0 8px rgba(233,160,92,.55); }
.login-facts li:nth-child(3)::before { background: var(--iris);   box-shadow: 0 0 8px rgba(154,162,255,.55); }

.login-card {
  width: 100%;
  background: linear-gradient(180deg, rgba(255,255,255,.028), transparent 42%), var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: var(--r-xl);
  padding: 30px 30px 32px;
  box-shadow: var(--shadow-pop);
  animation: card-rise 520ms var(--ease-out-expo) both;
}
/* the compact brand only appears once the aside is dropped on narrow screens */
.card-brand { display: none; margin-bottom: 26px; }

.login-card .form-title {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -.015em;
  margin-bottom: 4px;
}
.login-card .form-note { margin: 0 0 22px; }
.login-card button[type="submit"] { width: 100%; padding: 11px 14px; font-size: 14px; }

.login-foot {
  margin: 20px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--text-faint);
}

@keyframes card-rise {
  from { opacity: 0; transform: translateY(14px) scale(.985); }
  to   { opacity: 1; transform: none; }
}

@media (max-width: 900px) {
  .login-shell { grid-template-columns: minmax(0, 1fr); max-width: 420px; gap: 30px; }
  .login-aside { display: none; }
  .login-shell .login-card .card-brand { display: flex; }
}

/* ---------------------------------------------------------------- console */

header.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 11px 22px;
  background: rgba(11,10,13,.86);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
          backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid var(--line);
}
/* hairline of signal along the very top of the console */
header.topbar::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(61,220,151,.55) 18%, rgba(154,162,255,.4) 55%, transparent 88%);
}

.topbar-divider {
  width: 1px;
  height: 22px;
  background: var(--line-strong);
  flex: none;
}

nav.tabs {
  display: flex;
  gap: 3px;
  overflow-x: auto;
  scrollbar-width: none;
}
nav.tabs::-webkit-scrollbar { display: none; }
nav.tabs button {
  background: none;
  border: 1px solid transparent;
  border-radius: 6px;
  padding: 7px 12px;
  color: var(--text-dim);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
}
nav.tabs button:hover:not(:disabled) { background: var(--surface-2); color: var(--text); }
nav.tabs button.active {
  color: var(--mint);
  background: rgba(61,220,151,.10);
  border-color: rgba(61,220,151,.24);
}

#whoami {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--text-dim);
}

main {
  padding: 26px 24px 72px;
  max-width: 1240px;
  margin: 0 auto;
}

.panel-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}
.panel-head h2 {
  display: flex;
  align-items: center;
  gap: 9px;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--text);
}
.panel-head h2::before {
  content: "";
  width: 3px;
  height: 13px;
  border-radius: 2px;
  background: var(--mint);
  box-shadow: 0 0 10px rgba(61,220,151,.5);
}
#machines-count {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--text-faint);
  padding: 3px 8px;
  border: 1px solid var(--line);
  border-radius: 20px;
}
/* app.js blanks this when there are no machines — don't leave an empty pill */
#machines-count:empty { display: none; }

/* ------------------------------------------------------------------ cards */

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(296px, 1fr));
  gap: 14px;
}

.card {
  position: relative;
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 15px 16px;
  display: flex;
  flex-direction: column;
  gap: 9px;
  transition: border-color var(--t-fast), background var(--t-fast), transform var(--t-fast);
}
/* status rail: neutral by default, lit when the machine reports online */
.card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--line-strong);
  transition: background var(--t-fast);
}
.card:has(.dot.online)::before { background: linear-gradient(180deg, var(--mint), rgba(61,220,151,.15)); }
.card:has(.dot.direct)::before { background: linear-gradient(180deg, var(--iris), rgba(154,162,255,.15)); }
.card:hover { border-color: var(--line-strong); background: var(--surface-2); }

.card-title { display: flex; align-items: center; gap: 9px; }
.card-title h3 {
  font-family: var(--mono);
  font-size: 13.5px;
  font-weight: 600;
  letter-spacing: -.005em;
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: auto -16px -15px;
  padding: 12px 16px;
  border-top: 1px solid var(--line);
  background: rgba(0,0,0,.16);
}

/* ------------------------------------------------------------------- dots */

.dot {
  width: 8px;
  height: 8px;
  flex: none;
  border-radius: 50%;
  background: var(--text-faint);
}
.dot.online {
  background: var(--mint);
  box-shadow: 0 0 0 3px var(--mint-glow);
  animation: pulse 2.6s var(--ease-out-quart) infinite;
}
.dot.offline { background: #4b4757; box-shadow: none; animation: none; }
.dot.direct  { background: var(--iris); box-shadow: 0 0 0 3px rgba(154,162,255,.13); animation: none; }

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 3px var(--mint-glow); }
  50%      { box-shadow: 0 0 0 5px rgba(61,220,151,.05); }
}

/* ------------------------------------------------------------------- tags */

.tag {
  display: inline-flex;
  align-items: center;
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: 20px;
  border: 1px solid var(--line-strong);
  background: rgba(255,255,255,.02);
  color: var(--text-dim);
  white-space: nowrap;
}
.tag.role { border-color: rgba(61,220,151,.32); color: var(--mint); background: rgba(61,220,151,.08); }
.tag.warn { border-color: rgba(233,160,92,.34); color: var(--copper); background: rgba(233,160,92,.08); }

/* ----------------------------------------------------------------- tables */

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--surface);
}
table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
th {
  text-align: left;
  padding: 10px 12px;
  font-family: var(--mono);
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: .13em;
  text-transform: uppercase;
  color: var(--text-dim);
  background: rgba(255,255,255,.022);
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}
td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  vertical-align: middle;
}
tbody tr:last-child td { border-bottom: none; }
tbody tr { transition: background var(--t-fast); }
tbody tr:hover { background: rgba(255,255,255,.028); }
td .faint, th .faint { font-size: 12.5px; }

/* ------------------------------------------------------------------ modal */

.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: grid;
  place-items: center;
  padding: 20px;
  background: rgba(5,4,7,.74);
  -webkit-backdrop-filter: blur(3px);
          backdrop-filter: blur(3px);
  animation: fade-in 180ms var(--ease-out-quart) both;
}
.modal {
  width: 100%;
  max-width: 470px;
  max-height: 88vh;
  overflow-y: auto;
  background: linear-gradient(180deg, rgba(255,255,255,.03), transparent 30%), var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: var(--r-lg);
  padding: 22px 24px 24px;
  box-shadow: var(--shadow-pop);
  animation: card-rise 300ms var(--ease-out-expo) both;
}
.modal-head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: -22px -24px 20px;
  padding: 16px 18px 15px 24px;
  border-bottom: 1px solid var(--line);
}
.modal-head h2 {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -.01em;
}
.modal-head button { padding: 3px 9px; font-size: 13px; line-height: 1; }
.modal-actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
  margin: 22px -24px -24px;
  padding: 16px 24px;
  border-top: 1px solid var(--line);
  background: rgba(0,0,0,.18);
}

@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }

/* ---------------------------------------------------------------- notices */

.notice {
  padding: 11px 14px;
  border-radius: var(--r-sm);
  border: 1px solid var(--line-strong);
  border-left-width: 2px;
  background: var(--well);
  font-size: 13.5px;
  line-height: 1.45;
  margin-bottom: 15px;
}
.notice.error {
  border-color: rgba(244,98,111,.34);
  border-left-color: var(--danger);
  color: var(--danger-text);
  background: rgba(244,98,111,.08);
}
.notice.ok {
  border-color: rgba(61,220,151,.3);
  border-left-color: var(--mint);
  color: var(--mint);
  background: rgba(61,220,151,.07);
}

.empty {
  padding: 52px 24px;
  text-align: center;
  font-size: 13.5px;
  color: var(--text-faint);
  border: 1px dashed var(--line-strong);
  border-radius: var(--r-md);
  background:
    repeating-linear-gradient(-45deg, rgba(255,255,255,.012) 0 8px, transparent 8px 16px);
}

.copybox { display: flex; gap: 8px; align-items: stretch; }
.copybox input {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0;
}
.copybox button { flex: none; }

#toast {
  position: fixed;
  left: 50%;
  bottom: 26px;
  z-index: 100;
  transform: translateX(-50%);
  padding: 11px 18px;
  font-size: 13.5px;
  background: var(--surface-2);
  border: 1px solid var(--line-strong);
  border-left: 2px solid var(--mint);
  border-radius: var(--r-sm);
  box-shadow: var(--shadow-pop);
  animation: toast-in 300ms var(--ease-out-expo) both;
}
@keyframes toast-in {
  from { opacity: 0; transform: translate(-50%, 12px); }
  to   { opacity: 1; transform: translate(-50%, 0); }
}

/* ----------------------------------------------------- public page shells */

.center-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 40px 22px;
}
.center-card {
  width: 100%;
  max-width: 560px;
  background: linear-gradient(180deg, rgba(255,255,255,.028), transparent 34%), var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: var(--r-xl);
  box-shadow: var(--shadow-pop);
  animation: card-rise 520ms var(--ease-out-expo) both;
  overflow: hidden;
}
.card-header {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 18px 26px;
  border-bottom: 1px solid var(--line);
  background: rgba(0,0,0,.2);
}
.card-body { padding: 26px; }
.card-body > h1 {
  font-size: 22px;
  letter-spacing: -.022em;
  margin-bottom: 8px;
}
.card-kicker {
  display: block;
  margin-bottom: 10px;
  font-family: var(--mono);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--mint);
}

pre.code {
  background: var(--bg-deep);
  border: 1px solid var(--line);
  border-left: 2px solid rgba(61,220,151,.45);
  border-radius: var(--r-sm);
  padding: 13px 15px;
  margin: 10px 0 0;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 12.5px;
  line-height: 1.65;
  color: #cbe7da;
}

ol.steps {
  list-style: none;
  counter-reset: step;
  margin: 22px 0 0;
  padding: 0;
}
ol.steps li {
  counter-increment: step;
  position: relative;
  padding: 0 0 20px 40px;
  font-size: 14px;
  line-height: 1.55;
}
ol.steps li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0;
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  border-radius: 7px;
  border: 1px solid var(--line-strong);
  background: var(--surface-2);
  font: 700 10.5px/1 var(--mono);
  letter-spacing: .04em;
  color: var(--mint);
}
/* connector line between steps — the "sequence" reads at a glance */
ol.steps li::after {
  content: "";
  position: absolute;
  left: 13px;
  top: 30px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(180deg, var(--line-strong), transparent);
}
ol.steps li:last-child { padding-bottom: 0; }
ol.steps li:last-child::after { display: none; }
ol.steps li strong { font-weight: 600; }

/* ----------------------------------------------------------------- viewer */

body.viewer-body {
  overflow: hidden;
  height: 100vh;
  display: flex;
  flex-direction: column;
  background: #05070a;
}

.viewer-bar {
  flex: none;
  display: flex;
  align-items: center;
  gap: 9px;
  height: 38px;
  padding: 0 10px 0 12px;
  background: linear-gradient(180deg, #17161d, #121118);
  border-bottom: 1px solid #262433;
}
.viewer-bar #client-name {
  font-family: var(--mono);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: -.005em;
  max-width: 34vw;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.viewer-bar #conn-status {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: .1em;
  text-transform: uppercase;
}
.viewer-bar .tag { padding: 2px 7px; font-size: 9.5px; }
.viewer-bar button {
  padding: 4px 10px;
  font-size: 12px;
  border-radius: 6px;
  background: rgba(255,255,255,.045);
  border-color: rgba(255,255,255,.10);
}
.viewer-bar button:hover:not(:disabled) { background: rgba(255,255,255,.10); border-color: rgba(255,255,255,.2); }
.viewer-bar button.danger {
  background: rgba(244,98,111,.10);
  border-color: rgba(244,98,111,.28);
  color: var(--danger-text);
}
.viewer-bar button.danger:hover:not(:disabled) { background: rgba(244,98,111,.2); border-color: var(--danger); }
.viewer-sep { width: 1px; height: 18px; background: rgba(255,255,255,.10); flex: none; }

#screen {
  flex: 1 1 auto;
  min-height: 0;
  background: #05070a;
  overflow: hidden;
}

.viewer-status {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  pointer-events: none;
  background: radial-gradient(60% 60% at 50% 45%, rgba(11,10,13,.72), rgba(5,7,10,.94));
}
.viewer-status .box {
  pointer-events: auto;
  min-width: 300px;
  max-width: 430px;
  padding: 26px 30px 24px;
  text-align: center;
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-pop);
}
.viewer-status .box h2 {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--text);
  margin-bottom: 10px;
}
.viewer-status .box p { font-size: 13.5px; line-height: 1.5; }
/* indeterminate progress hairline under the status title */
.viewer-status .box::before {
  content: "";
  display: block;
  width: 46px;
  height: 2px;
  margin: 0 auto 16px;
  border-radius: 2px;
  background: linear-gradient(90deg, transparent, var(--mint), transparent);
  animation: scan 1.8s var(--ease-out-quart) infinite;
}
@keyframes scan {
  0%, 100% { opacity: .25; transform: scaleX(.5); }
  50%      { opacity: 1;   transform: scaleX(1); }
}

/* ------------------------------------------------------------- responsive */

@media (max-width: 820px) {
  header.topbar { flex-wrap: wrap; gap: 10px 12px; padding: 10px 16px; }
  header.topbar .topbar-divider { display: none; }
  nav.tabs { order: 3; width: 100%; }
  main { padding: 20px 16px 60px; }
  .panel-head { flex-wrap: wrap; }
  .field-row { grid-template-columns: 1fr; }
  .card-body, .card-header { padding-left: 20px; padding-right: 20px; }
}

/* --------------------------------------------------------- reduced motion */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }
}