:root {
  --bg: #f4f5f9;
  --bg-2: #ffffff;
  --fg: #151821;
  --muted: #5f6677;
  --line: #dde0ea;
  --ring: #e6e8f0;
  --accent: #6a4cff;
  --accent-2: #12b5f0;
  --ok: #17a673;
  --warn: #c98a00;
  --bad: #d64545;
  --shadow: 0 10px 30px rgba(20, 24, 40, 0.1);
  --radius: 14px;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1016;
    --bg-2: #171a23;
    --fg: #eceef4;
    --muted: #979db0;
    --line: #2a2e3b;
    --ring: #1f2330;
    --accent: #8a72ff;
    --accent-2: #2cc6ff;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.45);
  }
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  display: grid;
  grid-template-rows: auto 1fr auto auto;
  background: var(--bg);
  color: var(--fg);
  font: 15px/1.45 system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

.sprite {
  position: absolute;
  width: 0;
  height: 0;
}

.icon {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex: none;
}

/* ---- top bar ---- */

.topbar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px max(16px, env(safe-area-inset-left));
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: inherit;
  text-decoration: none;
  margin-right: auto;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--bg-2);
  cursor: pointer;
  max-width: 55vw;
}

.chip span {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.chip .icon {
  width: 18px;
  height: 18px;
}

.chip[data-private='true'] {
  border-color: var(--accent);
  color: var(--accent);
}

.icon-btn {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: var(--bg-2);
  cursor: pointer;
}

.room-action {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 14px;
  border-radius: 999px;
  white-space: nowrap;
}

.room-action .icon {
  width: 18px;
  height: 18px;
}

/* ---- stage: you in the middle, the others around ---- */

.stage {
  display: grid;
  grid-template-rows: 1fr auto;
  min-height: 340px;
}

.field {
  position: relative;
  overflow: hidden;
}

.radar {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  pointer-events: none;
}

.radar span {
  position: absolute;
  border-radius: 50%;
  border: 1px solid var(--ring);
}

.radar span:nth-child(1) {
  width: 260px;
  height: 260px;
}

.radar span:nth-child(2) {
  width: 520px;
  height: 520px;
}

.radar span:nth-child(3) {
  width: 820px;
  height: 820px;
}

.me,
.peer {
  position: absolute;
  left: 50%;
  top: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  width: 132px;
  padding: 6px;
  border: 0;
  border-radius: var(--radius);
  background: none;
  text-align: center;
  cursor: pointer;
  transform: translate(-50%, -50%) translate(var(--x, 0), var(--y, 0));
  transition: transform 0.45s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.peers {
  list-style: none;
  margin: 0;
  padding: 0;
}

.avatar {
  position: relative;
  display: grid;
  place-items: center;
  width: 72px;
  height: 72px;
  border-radius: 50%;
  color: #fff;
  background: linear-gradient(140deg, hsl(var(--hue, 250) 75% 62%), hsl(calc(var(--hue, 250) + 40) 80% 52%));
  box-shadow: var(--shadow);
  transition: transform 0.15s ease;
}

.avatar .icon {
  width: 32px;
  height: 32px;
}

.me .avatar {
  width: 84px;
  height: 84px;
  background: linear-gradient(140deg, var(--accent), var(--accent-2));
}

.peer:hover .avatar,
.peer:focus-visible .avatar,
.peer.drop-target .avatar {
  transform: scale(1.08);
}

.peer.drop-target .avatar {
  outline: 3px solid var(--accent);
  outline-offset: 4px;
}

.ring {
  position: absolute;
  inset: -7px;
  width: calc(100% + 14px);
  height: calc(100% + 14px);
  transform: rotate(-90deg);
  pointer-events: none;
}

.ring circle {
  fill: none;
  stroke-width: 4;
}

.ring .ring-fg {
  stroke: var(--accent-2);
  stroke-linecap: round;
  stroke-dasharray: 289;
  stroke-dashoffset: 289;
  transition: stroke-dashoffset 0.3s linear;
}

.peer .name,
.me .name {
  font-weight: 600;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.peer .meta,
.me .meta {
  font-size: 12.5px;
  color: var(--muted);
}

.badge {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  padding: 1px 7px;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--muted);
}

.badge[data-path='relay'] {
  color: var(--warn);
  border-color: currentColor;
}

.badge[data-path='lan'],
.badge[data-path='direct'] {
  color: var(--ok);
  border-color: currentColor;
}

.peer.entering {
  animation: pop 0.35s ease;
}

@keyframes pop {
  from {
    opacity: 0;
    scale: 0.6;
  }
}

.hint {
  width: min(600px, calc(100% - 32px));
  margin: 4px auto 12px;
  text-align: center;
  color: var(--muted);
}

.hint p {
  margin: 0;
}

.hint-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-top: 10px;
}

.hint-actions:empty {
  display: none;
}

.link-btn {
  border: 0;
  background: none;
  padding: 2px 4px;
  color: var(--accent);
  font-weight: 600;
  cursor: pointer;
}

.link-btn:hover {
  text-decoration: underline;
}

body.dragging .peer .avatar {
  outline: 2px dashed var(--accent);
  outline-offset: 4px;
}

.drop-hint {
  position: fixed;
  left: 50%;
  top: 74px;
  transform: translateX(-50%);
  padding: 8px 16px;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  box-shadow: var(--shadow);
  pointer-events: none;
  z-index: 5;
}

/* ---- transfers ---- */

.transfers {
  display: grid;
  gap: 10px;
  padding: 0 16px 10px;
  max-height: 42vh;
  overflow-y: auto;
  width: min(760px, 100%);
  justify-self: center;
}

.transfer {
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-2);
  box-shadow: var(--shadow);
}

.t-head {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}

.t-head .icon {
  width: 18px;
  height: 18px;
  color: var(--accent);
}

.t-head strong {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.t-state {
  margin-left: auto;
  font-size: 13px;
  color: var(--muted);
  white-space: nowrap;
}

.transfer[data-state='done'] .t-state {
  color: var(--ok);
}

.transfer[data-state='failed'] .t-state,
.transfer[data-state='cancelled'] .t-state,
.transfer[data-state='declined'] .t-state {
  color: var(--bad);
}

.t-btn {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: none;
  padding: 2px 10px;
  font-size: 13px;
  cursor: pointer;
}

.t-title {
  margin: 4px 0 8px;
  font-size: 14px;
  color: var(--muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.bar {
  height: 6px;
  border-radius: 999px;
  background: var(--ring);
  overflow: hidden;
}

.bar .fill {
  height: 100%;
  width: 0;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transition: width 0.25s linear;
}

.transfer[data-state='done'] .fill {
  background: var(--ok);
}

.transfer[data-state='failed'] .fill,
.transfer[data-state='cancelled'] .fill {
  background: var(--bad);
}

.t-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 14px;
  margin-top: 7px;
  font-size: 12.5px;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.t-error {
  margin-top: 6px;
  font-size: 13px;
  color: var(--bad);
}

.t-files {
  list-style: none;
  margin: 8px 0 0;
  padding: 0;
  display: grid;
  gap: 2px;
  font-size: 12.5px;
}

.t-files li {
  display: flex;
  align-items: center;
  gap: 6px;
  min-width: 0;
  color: var(--muted);
}

.t-files li span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.t-files .icon {
  width: 14px;
  height: 14px;
  color: var(--ok);
}

/* ---- footer, toasts ---- */

.footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 16px;
  padding: 10px 16px max(12px, env(safe-area-inset-bottom));
  font-size: 12.5px;
  color: var(--muted);
}

.status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.status i {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--warn);
}

.status[data-state='ready'] i {
  background: var(--ok);
}

.status[data-state='offline'] i {
  background: var(--bad);
}

.version {
  margin-left: auto;
  opacity: 0.7;
}

.toasts {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%);
  display: grid;
  gap: 8px;
  z-index: 10;
  width: min(440px, calc(100% - 32px));
}

.toast {
  padding: 10px 14px;
  border-radius: 10px;
  background: var(--fg);
  color: var(--bg);
  box-shadow: var(--shadow);
  animation: pop 0.2s ease;
}

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

.qr-scanner video {
  display: block;
  width: 100%;
  max-height: 280px;
  border-radius: 10px;
  background: #111;
  object-fit: contain;
}

.scanner-actions {
  flex-wrap: wrap;
}

.dialog {
  width: min(480px, calc(100% - 32px));
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--bg-2);
  color: var(--fg);
  box-shadow: var(--shadow);
}

.dialog::backdrop {
  background: rgba(8, 10, 18, 0.5);
  backdrop-filter: blur(3px);
}

.dialog h2 {
  margin: 0 0 6px;
  font-size: 19px;
  letter-spacing: -0.01em;
}

.muted {
  margin: 0 0 14px;
  color: var(--muted);
}

.note {
  margin: 10px 0 0;
  font-size: 13px;
  color: var(--warn);
}

.file-list {
  list-style: none;
  margin: 0 0 14px;
  padding: 8px 10px;
  max-height: 180px;
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 10px;
  font-size: 13px;
}

.file-list li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 2px 0;
}

.file-list li span:first-child {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.file-list li span:last-child {
  color: var(--muted);
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

.dest {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
}

.dest .icon {
  width: 18px;
  height: 18px;
  color: var(--accent);
}

.link {
  border: 0;
  background: none;
  padding: 0;
  color: var(--accent);
  cursor: pointer;
  margin-left: auto;
}

.actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 18px;
}

.actions.start {
  justify-content: flex-start;
  margin-top: 0;
  margin-bottom: 16px;
}

.btn {
  padding: 8px 16px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: var(--bg);
  cursor: pointer;
  font-weight: 600;
}

.btn.primary {
  border-color: transparent;
  background: linear-gradient(140deg, var(--accent), var(--accent-2));
  color: #fff;
}

.btn:disabled {
  opacity: 0.5;
  cursor: default;
}

.choices {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.choice {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 20px 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg);
  font-weight: 600;
  cursor: pointer;
}

.choice .icon {
  width: 30px;
  height: 30px;
  color: var(--accent);
}

.field {
  display: grid;
  gap: 6px;
  margin-top: 14px;
}

.field > span:first-child {
  font-size: 13px;
  color: var(--muted);
}

.field input,
.field select,
.row input {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--bg);
}

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

.row input {
  flex: 1;
  min-width: 0;
}

.row .value {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.qr {
  display: block;
  margin: 16px auto;
  border-radius: 10px;
  background: #fff;
}

@media (max-width: 560px) {
  .brand span {
    display: none;
  }

  .me,
  .peer {
    width: 112px;
  }

  .peer .name {
    white-space: normal;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    line-height: 1.2;
  }

  .avatar {
    width: 60px;
    height: 60px;
  }

  .me .avatar {
    width: 68px;
    height: 68px;
  }

  .footnote {
    display: none;
  }
}

/* A phone keeps the room button's words, which say what it does, and lets the room chip
   shrink to its icon: the line under the devices says which room this is anyway. */
@media (max-width: 420px) {
  .topbar {
    gap: 8px;
  }

  .chip {
    padding: 7px 10px;
  }

  .chip span {
    display: none;
  }
}

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

/* ---- diagnostics ---- */

.dialog.wide {
  width: min(760px, calc(100% - 32px));
}

.diag-tools {
  margin-bottom: 12px;
}

.diag-body {
  display: grid;
  gap: 12px;
  max-height: 55vh;
  overflow-y: auto;
}

.diag-section {
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
}

.diag-section h3,
.diag-sub {
  margin: 0 0 6px;
  font-size: 14px;
}

.diag-sub {
  margin-top: 16px;
}

.diag-section dl {
  display: grid;
  grid-template-columns: minmax(110px, 30%) 1fr;
  gap: 4px 12px;
  margin: 0;
  font-size: 13px;
}

.diag-section dt {
  color: var(--muted);
}

.diag-section dd {
  margin: 0;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  font-variant-numeric: tabular-nums;
}

.diag-body pre {
  margin: 0;
  max-height: 200px;
  overflow: auto;
  font-size: 12px;
}

.check {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-top: 12px;
  font-size: 14px;
  cursor: pointer;
}

.check input {
  margin-top: 3px;
}

.check small {
  display: block;
  color: var(--muted);
  font-size: 12.5px;
}

.muted.small {
  margin-top: 6px;
  font-size: 12.5px;
}

.badge[data-path='worker'] {
  color: var(--accent);
  border-color: currentColor;
}

/* ---- more devices than fit around you: a plain grid ---- */

.field.crowded .radar,
.field.crowded .me {
  display: none;
}

.field.crowded .peers {
  position: absolute;
  inset: 0;
  display: flex;
  flex-wrap: wrap;
  align-content: flex-start;
  justify-content: center;
  gap: 8px;
  padding: 12px;
  overflow-y: auto;
}

.field.crowded .peer {
  position: static;
  transform: none;
}

/* Tall dialogs (diagnostics) scroll inside the window instead of running off it. */
.dialog {
  max-height: calc(100dvh - 32px);
  overflow-y: auto;
}

.diag-body {
  max-height: 46vh;
}

.peer.outdated .meta {
  color: var(--warn);
}