/* Panel styling after Teenage Engineering hardware:
   moulded grey plastic, one orange signal colour, recessed LCD, numbered
   channel buttons, everything on a 4px grid. */

/* Palette lifted from duckduckgo.com/email's own stylesheet: neutral greys,
   a blue accent, DuckDuckGo orange left to the logo alone. */

:root {
  --bg: #f0f4ff;          /* --title-background */
  --panel: #ffffff;       /* --card-background-color */
  --raise: #ffffff;
  --sunk: #eeeeee;        /* --subtle-color */
  --ink: #111111;         /* --emphasized-text-color */
  --dim: #666666;         /* --deemphasized-text-color */
  --line: #dddddd;        /* --separator-color */
  --signal: #3969ef;      /* --link-color */
  --signal-deep: #2b55ca; /* --button-color */
  --danger: #ee1025;
  --on-signal: #fff;
  --shadow: 0 1px 0 rgba(255, 255, 255, .9) inset, 0 1px 2px rgba(17, 17, 17, .08);
  --sunk-shadow: 0 1px 2px rgba(17, 17, 17, .13) inset, 0 -1px 0 rgba(255, 255, 255, .7);
  --r: 10px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme=light]) { color-scheme: dark; }
}

:root {
  --dark-bg: #111111;         /* --background-color */
  --dark-panel: #222222;      /* --card-background-color */
  --dark-raise: #2b2b2b;
  --dark-sunk: #191919;
  --dark-ink: #f5f5f5;        /* --text-color */
  --dark-dim: #ababab;        /* --deemphasized-text-color */
  --dark-line: #444444;       /* --separator-color */
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme=light]) {
    --bg: var(--dark-bg); --panel: var(--dark-panel); --raise: var(--dark-raise);
    --sunk: var(--dark-sunk); --ink: var(--dark-ink); --dim: var(--dark-dim);
    --line: var(--dark-line);
    --signal: #7295f6; --signal-deep: #8fabf9; --danger: #eb876c;
    --shadow: 0 1px 0 rgba(255, 255, 255, .05) inset, 0 1px 3px rgba(0, 0, 0, .5);
    --sunk-shadow: 0 2px 4px rgba(0, 0, 0, .5) inset, 0 -1px 0 rgba(255, 255, 255, .04);
  }
}

:root[data-theme=dark] {
  color-scheme: dark;
  --bg: var(--dark-bg); --panel: var(--dark-panel); --raise: var(--dark-raise);
  --sunk: var(--dark-sunk); --ink: var(--dark-ink); --dim: var(--dark-dim);
  --line: var(--dark-line);
  --signal: #7295f6; --signal-deep: #8fabf9; --danger: #eb876c;
  --shadow: 0 1px 0 rgba(255, 255, 255, .05) inset, 0 1px 3px rgba(0, 0, 0, .5);
  --sunk-shadow: 0 2px 4px rgba(0, 0, 0, .5) inset, 0 -1px 0 rgba(255, 255, 255, .04);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

/* display rules below would otherwise beat the hidden attribute */
[hidden] { display: none !important; }

body {
  background: var(--bg);
  color: var(--ink);
  font: 400 15px/1.5 Archivo, ui-sans-serif, system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
  padding: 20px 16px 56px;
}

.wrap { max-width: 940px; margin: 0 auto; }

/* micro-labels: the mono face does the engraved-legend job */
.legend {
  font: 600 10px/1 'Martian Mono', ui-monospace, monospace;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--dim);
}

.mono { font-family: 'Martian Mono', ui-monospace, monospace; }

/* --- device shell --------------------------------------------------------- */

.device {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 4px 16px;
  flex-wrap: wrap;
}

.logo { width: 24px; height: 24px; flex: none; }

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.wordmark {
  font: 800 19px/1 Archivo, sans-serif;
  letter-spacing: -.02em;
  text-transform: lowercase;
}

.device .spacer { flex: 1 1 auto; }

/* three-way theme switch, the physical kind */
.switch {
  display: flex;
  background: var(--sunk);
  box-shadow: var(--sunk-shadow);
  border-radius: 999px;
  padding: 3px;
  gap: 2px;
}

.switch button {
  border: 0; background: none; cursor: pointer;
  border-radius: 999px;
  padding: 5px 10px;
  color: var(--dim);
  font: 600 10px/1 'Martian Mono', monospace;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.switch button[aria-pressed=true] {
  background: var(--raise);
  color: var(--ink);
  box-shadow: var(--shadow);
}

/* --- panels --------------------------------------------------------------- */

.rack { display: grid; gap: 14px; }

@media (min-width: 800px) {
  /* generate carries the readout and the knob, so it takes the larger share */
  .rack.split { grid-template-columns: minmax(0, 2fr) minmax(0, 3fr); }
}

.panel {
  min-width: 0;              /* grid items default to auto, letting the strip push the page wide */
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--r);
  box-shadow: var(--shadow);
  padding: 16px;
}

.panel > header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.panel > header .spacer { flex: 1 1 auto; }

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

button, input, select, textarea { font: inherit; color: inherit; }

.btn {
  display: inline-flex; align-items: center; gap: 7px;
  border: 1px solid var(--line);
  background: var(--raise);
  box-shadow: var(--shadow);
  border-radius: 7px;
  padding: 8px 13px;
  cursor: pointer;
  font-weight: 500;
  font-size: 14px;
  white-space: nowrap;
}

.btn:active { box-shadow: var(--sunk-shadow); transform: translateY(1px); }
.btn.primary { background: var(--signal); border-color: transparent; color: var(--on-signal); font-weight: 600; }
.btn.danger { color: var(--danger); }
.btn.primary.danger { background: var(--danger); border-color: transparent; color: #fff; }
.btn.small { padding: 6px 10px; font-size: 13px; }
.btn[disabled] { opacity: .45; cursor: not-allowed; }

:where(a, button, input, select, textarea):focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 2px;
}

/* a field already has a border to work with, so tint that and add a soft ring
   rather than stacking a detached outline outside it */
.field:focus-visible {
  outline: none;
  border-color: var(--signal);
  box-shadow: var(--sunk-shadow), 0 0 0 3px color-mix(in srgb, var(--signal) 25%, transparent);
}

.field {
  width: 100%;
  background: var(--sunk);
  box-shadow: var(--sunk-shadow);
  border: 1px solid var(--line);
  color: var(--ink);
  border-radius: 7px;
  padding: 9px 11px;
}

.field::placeholder { color: var(--dim); }

textarea.field { resize: vertical; min-height: 84px; font: inherit; }

label.stack { display: block; }
summary, [role=option] { cursor: pointer; }
label.stack .legend { display: block; margin-bottom: 6px; }

.row { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }

/* Hover is a pointer affordance; on touch it just sticks after a tap. */
@media (hover: hover) {
  .btn, .channel, .tabs button, .switch button, .select .menu button {
    transition: background-color .12s ease, border-color .12s ease, color .12s ease;
  }

  /* neutral controls warm toward the accent rather than just darkening */
  .btn:hover,
  .channel:not([aria-pressed=true]):hover {
    background: color-mix(in srgb, var(--signal) 8%, var(--raise));
    border-color: color-mix(in srgb, var(--signal) 40%, var(--line));
  }

  .btn.primary:hover,
  .channel[aria-pressed=true]:hover {
    background: var(--signal-deep);
    border-color: transparent;
  }

  .btn.danger:hover {
    background: color-mix(in srgb, var(--danger) 10%, var(--raise));
    border-color: color-mix(in srgb, var(--danger) 45%, var(--line));
  }

  .btn.primary.danger:hover {
    background: color-mix(in srgb, var(--danger) 82%, #000);
    border-color: transparent;
  }

  /* segmented controls have no border to tint, so lift the label instead */
  .close:hover { color: var(--ink); border-color: var(--dim); }

  .tabs button:not([aria-selected=true]):hover,
  .switch button:not([aria-pressed=true]):hover {
    color: var(--ink);
    background: color-mix(in srgb, var(--ink) 6%, transparent);
  }

  .select .menu button:not([aria-selected=true]):hover {
    background: color-mix(in srgb, var(--signal) 10%, transparent);
  }

  .select .menu button[aria-selected=true]:hover { background: var(--signal-deep); }

  .item:hover { background: color-mix(in srgb, var(--ink) 3%, transparent); }
}

/* --- generate: the signature control -------------------------------------- */

.generator { display: grid; gap: 14px; grid-template-columns: 1fr auto; align-items: center; }

/* recessed LCD, the one place the alias is big enough to read across a desk */
.lcd {
  background: var(--sunk);
  box-shadow: var(--sunk-shadow);
  border-radius: 8px;
  padding: 14px;
  min-height: 76px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  overflow: hidden;
}

.lcd-head { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; }
.lcd-head .legend:last-child { white-space: nowrap; }

.lcd .value {
  font: 600 clamp(14px, 3.6vw, 19px)/1.3 'Martian Mono', monospace;
  letter-spacing: -.02em;
  overflow-wrap: anywhere;
  border: 0;
  background: none;
  padding: 0;
  text-align: left;
  cursor: pointer;
  border-radius: 4px;
}

.lcd .value.idle { color: var(--dim); font-weight: 400; cursor: default; }

/* the address is the copy target, not just a label */
.item .num {
  font: 400 11px/1.4 'Martian Mono', monospace;
  color: var(--dim);
  flex: none;
  min-width: 3ch;
}

.item .addr {
  border: 0;
  background: none;
  padding: 0;
  text-align: left;
  cursor: pointer;
  border-radius: 4px;
  color: inherit;
}

/* the encoder */
.knob {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  width: 92px; height: 92px;
  border-radius: 50%;
  border: 0;
  background: var(--signal);
  color: var(--on-signal);
  cursor: pointer;
  font: 600 11px/1.35 'Martian Mono', monospace;
  letter-spacing: .06em;
  text-transform: uppercase;
  box-shadow: 0 3px 0 var(--signal-deep), 0 5px 12px rgba(17, 17, 17, .2);
  transition: transform .12s, box-shadow .12s;
}

.knob:hover { transform: translateY(-1px); }
.knob:active { transform: translateY(3px); box-shadow: 0 0 0 var(--signal-deep); }
.knob[disabled] { opacity: .5; cursor: not-allowed; transform: none; }

@media (max-width: 460px) {
  .generator { grid-template-columns: 1fr; }
  .knob {
    width: 100%;
    height: 46px;
    border-radius: 999px;
    flex-direction: row;
    gap: 5px;
    font-size: 10px;
    box-shadow: 0 2px 0 var(--signal-deep), 0 3px 8px rgba(17, 17, 17, .18);
  }

  .knob:active { transform: translateY(2px); }
}

/* --- account strip -------------------------------------------------------- */

/* accounts are named and unbounded, so they scroll horizontally rather than
   sitting in fixed numbered slots */
.strip {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  scrollbar-width: none;
  padding-bottom: 2px;
  scroll-snap-type: x proximity;
  overscroll-behavior-x: contain;
}

.strip::-webkit-scrollbar { display: none; }

/* fade whichever edge has more accounts behind it, so a clipped chip reads as
   scrollable rather than broken */
.strip[data-more=right] { mask-image: linear-gradient(90deg, #000 calc(100% - 34px), transparent); }
.strip[data-more=left]  { mask-image: linear-gradient(90deg, transparent, #000 34px); }
.strip[data-more=both]  { mask-image: linear-gradient(90deg, transparent, #000 34px, #000 calc(100% - 34px), transparent); }

.channel {
  display: flex;
  align-items: center;
  flex: none;
  scroll-snap-align: start;
  max-width: 190px;
  border: 1px solid var(--line);
  background: var(--raise);
  box-shadow: var(--shadow);
  border-radius: 8px;
  padding: 8px 12px;
  cursor: pointer;
}

.channel .name {
  font: 600 13px/1.2 Archivo, sans-serif;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.channel[aria-pressed=true] {
  background: var(--signal);
  border-color: transparent;
  color: var(--on-signal);
  box-shadow: none;
}

.channel.add {
  padding: 8px 13px;
  font: 600 15px/1 'Martian Mono', monospace;
  color: var(--dim);
}

/* the account card matches the generator's height; the slack falls between the
   strip and the identity rather than trailing off the bottom */
.panel.account { display: flex; flex-direction: column; }
.panel.account .identity { margin-top: auto; padding-top: 16px; }

.identity { margin-top: 12px; display: grid; gap: 3px; }
.identity .who {
  font: 600 15px/1.5 Archivo, sans-serif;
  color: inherit;
  border: 0;
  background: none;
  padding: 0;
  text-align: left;
  cursor: pointer;
  overflow-wrap: anywhere;
  justify-self: start;
}
.identity .meta { font-size: 13px; color: var(--dim); }

/* --- address list --------------------------------------------------------- */

.filters { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 10px; }
.filters #search { flex: 1 1 180px; width: auto; }

/* dropdown: the native control cannot take the panel's recessed styling */
.select { position: relative; flex: 0 0 auto; }

.picker { flex-wrap: nowrap; gap: 8px; }
.picker .select { flex: 1 1 auto; min-width: 0; }
.picker .trigger { width: 100%; justify-content: space-between; }

.select .trigger {
  display: flex; align-items: center; gap: 10px;
  width: auto;
  cursor: pointer;
  text-align: left;
}

.select .caret {
  width: 7px; height: 7px;
  border-right: 2px solid var(--dim);
  border-bottom: 2px solid var(--dim);
  transform: translateY(-2px) rotate(45deg);
  flex: none;
}

.select[data-open] .caret { transform: translateY(1px) rotate(-135deg); }

.select .menu {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  min-width: 100%;
  max-height: 260px;
  overflow-y: auto;
  z-index: 5;
  background: var(--raise);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 10px 26px rgba(0, 0, 0, .18);
  padding: 4px;
}

.select .menu button {
  display: block;
  width: 100%;
  text-align: left;
  border: 0;
  background: none;
  cursor: pointer;
  border-radius: 5px;
  padding: 8px 10px;
  font-size: 14px;
  white-space: nowrap;
}

.select .menu button[aria-selected=true] {
  background: var(--signal);
  color: var(--on-signal);
  font-weight: 600;
}

@media (max-width: 560px) {
  .select { flex: 1 1 100%; }
  .select .trigger { width: 100%; justify-content: space-between; }
}

.list { list-style: none; }

.item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 8px;
  margin: 0 -8px;
  border-radius: 7px;
  border-top: 1px solid var(--line);
  flex-wrap: wrap;
}

.item:first-child { border-top: 0; }
.item .num {
  font: 400 11px/1.4 'Martian Mono', monospace;
  color: var(--dim);
  flex: none;
  min-width: 3ch;
}

.item .addr { font: 400 13px/1.4 'Martian Mono', monospace; overflow-wrap: anywhere; flex: 1 1 200px; }
.item .when { font-size: 12px; color: var(--dim); white-space: nowrap; }
.item .owner { font-weight: 600; color: var(--ink); }
.item .note { flex-basis: 100%; font-size: 13px; color: var(--dim); }
.item .note:empty { display: none; }

.empty { padding: 22px 2px; color: var(--dim); }

@media (max-width: 560px) {
  /* address on the first row beside its number, meta and actions beneath */
  .item { display: grid; grid-template-columns: auto 1fr auto auto; column-gap: 8px; row-gap: 8px; }
  .item .num { grid-area: 1 / 1; align-self: center; }
  .item .addr { grid-area: 1 / 2 / 2 / -1; flex: none; }
  .item .when { grid-column: 1 / 3; align-self: center; }
  .item .note { grid-column: 1 / -1; }
}

/* --- dialogs -------------------------------------------------------------- */

dialog:not([open]) { display: none; }   /* the display rule below would keep it painted */

dialog {
  margin: auto;              /* the reset above zeroes the UA margin that centres it */
  display: flex;
  flex-direction: column;
  border: 1px solid var(--line);
  border-radius: var(--r);
  background: var(--panel);
  color: var(--ink);
  padding: 0;
  width: min(440px, calc(100vw - 32px));
  max-height: calc(100dvh - 40px);
  box-shadow: 0 18px 50px rgba(0, 0, 0, .3);
  overflow: hidden;
}

/* settings holds a fixed frame so switching tabs never resizes the dialog */
#settings { height: min(440px, calc(100dvh - 40px)); }   /* the tallest tab is Backup at ~420 */
#signin { height: min(330px, calc(100dvh - 40px)); }
#note { height: min(340px, calc(100dvh - 40px)); }
#confirm { width: min(400px, calc(100vw - 32px)); }   /* the passphrase field appearing must not resize it */

dialog form { display: flex; flex-direction: column; flex: 1; min-height: 0; }
dialog .body { flex: 1; min-height: 0; overflow-y: auto; padding: 18px; }

dialog .actions {
  flex: none;
  margin: 0;
  padding: 13px 18px;
  border-top: 1px solid var(--line);
  background: var(--panel);
  justify-content: flex-end;
}

dialog::backdrop { background: rgba(0, 0, 0, .45); }
dialog h2 { font-size: 17px; margin-bottom: 4px; }

.title-row { display: flex; align-items: flex-start; gap: 10px; }
.title-row h2 { flex: 1; min-width: 0; }
.title-row .close { height: 30px; margin-top: -3px; }

.head {
  flex: none;
  display: flex;
  align-items: stretch;
  gap: 8px;
  margin: 18px 18px 0;
}

.close {
  flex: none;
  width: 34px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  background: var(--raise);
  box-shadow: var(--shadow);
  border-radius: 8px;
  cursor: pointer;
  color: var(--dim);
}

.close svg { width: 15px; height: 15px; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; fill: none; }

.tabs {
  flex: 1;
  min-width: 0;
  display: flex;
  gap: 2px;
  background: var(--sunk);
  box-shadow: var(--sunk-shadow);
  border-radius: 8px;
  padding: 3px;
}

.tabs button {
  flex: 1;
  border: 0;
  background: none;
  cursor: pointer;
  border-radius: 6px;
  padding: 7px 4px;
  color: var(--dim);
  font: 600 10px/1 'Martian Mono', monospace;
  letter-spacing: .06em;
  text-transform: uppercase;
}

.tabs button[aria-selected=true] {
  background: var(--raise);
  color: var(--ink);
  box-shadow: var(--shadow);
}

.stackers { display: grid; gap: 8px; }
dialog p.hint { font-size: 13px; color: var(--dim); margin-bottom: 14px; }
dialog .stack + .stack, dialog .row { margin-top: 12px; }
#settings .body { padding-top: 16px; }

.checks { display: grid; gap: 8px; margin: 10px 0 4px; }
.checks label { display: flex; gap: 9px; align-items: flex-start; font-size: 14px; cursor: pointer; }
.checks input { margin-top: 3px; accent-color: var(--signal); flex: none; cursor: pointer; }
.checks span small { display: block; color: var(--dim); font-size: 12px; }

.alert {
  border-left: 3px solid var(--signal);
  background: var(--sunk);
  padding: 9px 11px;
  border-radius: 5px;
  font-size: 13px;
  margin-top: 12px;
}

.alert.ok { border-left-color: var(--signal); }
.alert:empty { display: none; }

/* --- toast ---------------------------------------------------------------- */

#toast {
  position: fixed;
  left: 50%;
  bottom: 22px;
  transform: translate(-50%, 130%);
  background: var(--ink);
  color: var(--bg);
  border-radius: 999px;
  padding: 10px 18px;
  font: 600 12px/1 'Martian Mono', monospace;
  letter-spacing: .04em;
  transition: transform .22s cubic-bezier(.2, .8, .3, 1);
  z-index: 10;
  max-width: calc(100vw - 32px);
}

#toast:not(.up) { visibility: hidden; }

/* an animation, not a transition — re-adding the class replays it, so a second
   copy visibly re-announces instead of sitting there */
#toast.up {
  transform: translate(-50%, 0);
  animation: toast-in .24s cubic-bezier(.2, .8, .3, 1);
}

@keyframes toast-in {
  from { transform: translate(-50%, 130%); }
  to { transform: translate(-50%, 0); }
}

.foot { margin-top: 20px; padding: 0 4px; font-size: 12px; color: var(--dim); }
.foot a { color: inherit; }

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}