/* ============================================================================
   Marquee — base layer.

   The design system's primitives, rebuilt on the tokens in tokens.css: type
   scale, the blueprint frame, buttons, fields, tags, segmented controls. No
   literal colors here — everything routes through a var() so tokens.css stays
   the single swap point.

   The blueprint frame is the system's defining move: components are wireframe
   objects. Square, transparent, hairline-bordered, with four registration marks
   at the corners. The solid accent primary button is the deliberate exception.
   Do not round them and do not drop the marks.
   ========================================================================== */

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

html, body { height: 100%; }

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.55;
  color: var(--color-text);
  background: var(--color-bg);
  overflow: hidden;              /* the app owns its own scroll regions */
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: var(--font-heading-weight);
  line-height: 1.12;
  letter-spacing: -0.015em;
  margin: 0;
}
h1 { font-size: 42px; }
h2 { font-size: 32px; }
h3 { font-size: 26px; }
h4 { font-size: 20px; }

p { margin: 0; }
a { color: var(--color-accent-text); text-underline-offset: 3px; }
a:hover { color: var(--color-accent); }
img { display: block; max-width: 100%; }

:focus { outline: none; }
:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }
::selection { background: color-mix(in srgb, var(--color-accent) 30%, transparent); }

.mono { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }
.text-muted { color: var(--color-muted); }
.hidden { display: none !important; }
.spacer { flex: 1; }

/* The UA rule for [hidden] is only `display: none`, so any component that sets
   its own display wins and the attribute silently does nothing — which is how
   an "ASLEEP" pill ends up on screen during Act I. Make the attribute mean what
   it says. */
[hidden] { display: none !important; }

/* — the recurring type patterns named in the handoff — */

/* Section label: sits above a group of controls in a rail. */
.label {
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-muted);
}

/* Eyebrow: sits above a screen heading and names the act + step. */
.eyebrow {
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent-text);
}

/* Status pill: ON AIR / ASLEEP / a firmware-path badge. */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-heading);
  font-weight: var(--font-heading-weight);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  padding: 3px 8px;
  white-space: nowrap;
}
.pill .dot { width: 6px; height: 6px; border-radius: 50%; flex: none; }
/* The path badge is a real button — it routes back to the fork. */
button.pill { cursor: pointer; color: inherit; }
.chrome button.pill:hover { background: rgba(242, 242, 243, 0.14); }
/* On air is the only filled pill, and its dot is the only warm color anywhere. */
.pill-on-air { background: var(--color-chrome); color: var(--color-chrome-text); }
.pill-on-air .dot { background: var(--color-lamp-on); }
.pill-asleep { border: 1px solid var(--color-divider); opacity: 0.8; }
.pill-asleep .dot { background: var(--color-lamp-off); }
/* On the dark chrome bar both variants become outlines — a filled dark pill on a
   dark bar would disappear. */
.chrome .pill { border: 1px solid var(--color-chrome-hairline); background: none; color: inherit; }
.chrome .pill-asleep { opacity: 0.8; }
.chrome .pill-asleep .dot { background: var(--color-neutral-500); }

/* — blueprint frame — */

.blueprint {
  position: relative;
  border: 1px solid var(--color-divider);
  border-radius: 0;
  background: none;
}
.blueprint > .corner {
  position: absolute;
  width: 11px;
  height: 11px;
  pointer-events: none;
  color: color-mix(in srgb, var(--color-text) 55%, transparent);
}
.blueprint > .corner::before,
.blueprint > .corner::after { content: ""; position: absolute; background: currentColor; }
.blueprint > .corner::before { left: 5px; top: 0; width: 1px; height: 100%; }
.blueprint > .corner::after { top: 5px; left: 0; width: 100%; height: 1px; }
.blueprint > .corner.tl { top: -6px; left: -6px; }
.blueprint > .corner.tr { top: -6px; right: -6px; }
.blueprint > .corner.bl { bottom: -6px; left: -6px; }
.blueprint > .corner.br { bottom: -6px; right: -6px; }
/* A primary button is filled, so its marks have to read against the accent. */
.btn-primary.blueprint > .corner { color: color-mix(in srgb, var(--color-bg) 75%, transparent); }

/* Content photography is desaturated and washed in the accent. */
.duotone { position: relative; overflow: hidden; }
.duotone::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: var(--color-accent);
  mix-blend-mode: color;
}

/* — elevation — */
/* The one lift that is not a modal: something opened from a control, floating just
   off the page it belongs to. Paired with .blueprint it is a drawing that has been
   lifted rather than a new surface. */

.elev-md { box-shadow: var(--shadow-md); }

/* — rules — */

.hr { height: 1px; border: 0; margin: 0; background: var(--color-divider); flex: none; }
hr { height: 1px; border: 0; margin: var(--space-3) 0; background: var(--color-divider); }

/* — buttons — */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  cursor: pointer;
  text-decoration: none;
  font-family: var(--font-heading);
  font-weight: var(--font-heading-weight);
  font-size: 14px;
  line-height: 1.2;
  letter-spacing: 0.06em;
  color: var(--color-text);
  background: transparent;
  border: 1px solid var(--color-divider);
  border-radius: 0;
  padding: 8px 13px;
}
.btn:disabled { opacity: 0.45; cursor: not-allowed; }
.btn-primary {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-bg);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.btn-primary:hover:not(:disabled) { background: var(--color-accent-600); border-color: var(--color-accent-600); }
.btn-primary:active:not(:disabled) { background: var(--color-accent-700); border-color: var(--color-accent-700); }
.btn-secondary:hover:not(:disabled) { background: color-mix(in srgb, var(--color-text) 7%, transparent); }
.btn-secondary:active:not(:disabled) { background: color-mix(in srgb, var(--color-text) 14%, transparent); }
.btn-ghost { border-color: transparent; color: var(--color-accent-text); }
.btn-ghost:hover:not(:disabled) { background: color-mix(in srgb, var(--color-accent) 10%, transparent); }
.btn-danger { color: var(--color-danger); border-color: color-mix(in srgb, var(--color-danger) 45%, transparent); }
.btn-danger:hover:not(:disabled) { background: color-mix(in srgb, var(--color-danger) 8%, transparent); }
.btn-block { width: 100%; }
.btn-sm { padding: 5px 9px; font-size: 12px; }

/* — fields — */

.field { display: flex; flex-direction: column; gap: 5px; min-width: 0; }
.field > .label { letter-spacing: 0.12em; }

.input,
input[type="text"], input[type="password"], input[type="number"], select, textarea {
  width: 100%;
  min-width: 0;
  min-height: 32px;
  padding: 6px 9px;
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--color-text);
  caret-color: var(--color-accent);
  background: var(--color-bg);
  border: 1px solid var(--color-divider);
  border-radius: 0;
}
select { font-family: var(--font-body); }
textarea { min-height: 64px; resize: vertical; line-height: 1.4; }
.input:hover,
input:hover:not(:disabled), select:hover:not(:disabled), textarea:hover { border-color: color-mix(in srgb, var(--color-text) 45%, transparent); }
input:focus-visible, select:focus-visible, textarea:focus-visible { border-color: var(--color-accent); outline-offset: 0; }
input:disabled, select:disabled { opacity: 0.5; cursor: not-allowed; }
input[type="range"] { min-height: 0; padding: 0; border: 0; background: none; accent-color: var(--color-accent); }
input[type="checkbox"] { width: 14px; height: 14px; min-height: 0; padding: 0; accent-color: var(--color-accent); }

.check-row { display: flex; align-items: center; gap: 8px; font-size: 12.5px; cursor: pointer; }
.check-row input[type="checkbox"] { flex: none; }

/* — segmented control — */

.seg { display: inline-flex; border: 1px solid var(--color-divider); }
/* Same control in a 260px rail. The options keep their full names — abbreviating
   "Floyd–Steinberg" to "F–S" would make the most consequential render setting
   unreadable to the beginner this screen is for. */
.seg-tight { display: flex; width: 100%; }
.seg-tight .seg-opt { padding: 6px 4px; font-size: 10.5px; letter-spacing: -0.01em; }
.seg-opt {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 1;
  gap: 6px;
  padding: 6px 12px;
  font-size: 12.5px;
  cursor: pointer;
  white-space: nowrap;
}
.seg-opt + .seg-opt { border-left: 1px solid var(--color-divider); }
.seg-opt input { position: absolute; opacity: 0; width: 0; height: 0; pointer-events: none; }
.seg-opt:has(input:checked) { background: var(--color-accent); color: var(--color-bg); }
.seg-opt:not(:has(input:checked)):hover { background: color-mix(in srgb, var(--color-text) 7%, transparent); }
.seg-opt:has(input:focus-visible) { outline: 2px solid var(--color-accent); outline-offset: -2px; }

/* — tags — */

.tag {
  display: inline-flex;
  align-items: center;
  font-size: 11px;
  letter-spacing: 0.02em;
  padding: 2px 9px;
  white-space: nowrap;
}
.tag-accent { background: var(--color-accent-100); color: var(--color-accent-800); }
.tag-neutral { background: var(--color-neutral-200); color: var(--color-neutral-800); }
.tag-outline { border: 1px solid var(--color-accent); color: var(--color-accent-text); }

/* — status dots (device checks) — */

.check { display: flex; align-items: center; gap: 10px; font-size: 13px; }
.check .dot { width: 7px; height: 7px; border-radius: 50%; flex: none; background: var(--color-check-wait); }
.check[data-state="pass"] .dot { background: var(--color-check-pass); }
.check[data-state="warn"] .dot { background: var(--color-warn); }
.check[data-state="fail"] .dot { background: var(--color-danger); }
.check[data-state="wait"] { opacity: 0.7; }
.check[data-state="fail"] { color: var(--color-danger); }

/* — inline field error — */
/* The first per-field error message in the app. Everything else reports through
   the toast, which is right for an action and wrong for a credential: a toast is
   gone in 3.2s and does not say WHICH field IO rejected. */

.field-error { font-size: 12px; line-height: 1.5; color: var(--color-danger); margin: -4px 0 0; }
input[aria-invalid="true"] { border-color: var(--color-danger); }

/* — a masked field with a reveal — */

.key-field { display: flex; align-items: stretch; gap: 0; min-width: 0; }
.key-field input { flex: 1; border-right: 0; }
.reveal-toggle {
  flex: none;
  padding: 0 9px;
  font-family: var(--font-heading);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-muted);
  background: var(--color-bg);
  border: 1px solid var(--color-divider);
  cursor: pointer;
}
.reveal-toggle:hover { color: var(--color-text); }
.reveal-toggle[aria-pressed="true"] { color: var(--color-accent-text); border-color: var(--color-accent); }

/* — dialogs — */

.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 60;
  display: grid;
  place-items: center;
  padding: var(--space-6);
  background: color-mix(in srgb, var(--color-neutral-900) 50%, transparent);
}
.modal {
  width: min(94vw, 620px);
  max-height: 88vh;
  overflow: auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-6);
  background: var(--color-bg);
  border: 1px solid var(--color-divider);
  box-shadow: var(--shadow-lg);
}
.modal-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.modal-head h4 { letter-spacing: 0.04em; text-transform: uppercase; }
.modal-close {
  border: 0;
  background: none;
  cursor: pointer;
  font-size: 16px;
  line-height: 1;
  padding: 4px;
  color: var(--color-muted);
}
.modal-close:hover { color: var(--color-text); }
.modal-actions { display: flex; align-items: center; justify-content: flex-end; gap: 8px; }

/* A dialog that belongs to the page under the app bar rather than to the window.
   .chrome is in normal flow with no z-index, so starting the scrim below it is all
   it takes to leave the bar lit — no stacking context anywhere. */
.modal-backdrop.under-chrome {
  top: var(--chrome-h);
  background: var(--color-scrim-below-chrome);
}

/* The credentials dialog. Narrower than the editor's modals, and framed.

   overflow is VISIBLE, unlike .modal: .blueprint > .corner sits 6px outside the
   box, so the inherited `overflow: auto` would shear all four marks off. That
   means giving up max-height too — the content here is fixed and short. If the
   copy ever grows past the viewport, put the scroll on an inner wrapper rather
   than back on this frame.

   `class="modal blueprint"` keeps the paper fill only because .modal is declared
   AFTER .blueprint in this file, at equal specificity — .blueprint sets
   `background: none`. Reorder the two rules and this dialog goes transparent. */
.modal-gate { width: min(94vw, 520px); max-height: none; overflow: visible; }
.modal-gate .modal-head { align-items: flex-start; }
.modal-gate .modal-head .head-lines { display: flex; flex-direction: column; gap: 4px; }
.modal-gate .modal-head h4 { text-transform: none; letter-spacing: -0.015em; }

/* — the connected Adafruit IO account, read-only — */
/* One block, three homes: A5b, the Settings modal, and whatever asks next. The
   key is a fixed run of bullets, not a render of the real one — its LENGTH is
   worth nothing to the reader and something to a shoulder. */

.account-plate {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 12px 14px;
  max-width: 520px;
}
.account-plate .account-lines { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.account-plate .account-user {
  font-family: var(--font-heading);
  font-weight: var(--font-heading-weight);
  font-size: 19px;
  line-height: 1.15;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.account-plate .account-key { font-size: 12px; color: var(--color-muted); }
.account-plate > .btn { flex: none; }

/* — toast — */

#toast {
  position: fixed;
  left: 50%;
  bottom: 40px;
  z-index: 80;
  transform: translateX(-50%) translateY(8px);
  max-width: min(80vw, 640px);
  padding: 9px 18px;
  font-size: 12.5px;
  color: var(--color-chrome-text);
  background: var(--color-neutral-900);
  border: 1px solid var(--color-neutral-700);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s, transform 0.2s;
}
#toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
@media (prefers-reduced-motion: reduce) { #toast { transition: none; } }