/* GNSS Log — "Aurora Ink" design system.
   Tokens → backdrop → primitives (glass, pressable, reveal, buttons, chips, switch,
   segmented, progress, dock, sheet) → screens. */

/* ------------------------------------------------------------------ tokens */
:root {
  /* Brand: "Tidewater" — deep sea-teal canvas with coral for intent. Teal and coral sit
     opposite each other on the wheel; coral appears only where you act. */
  --brand-1: #f2685a; /* coral */
  --brand-2: #ff8a6b; /* salmon */
  --brand-3: #ffbb8f; /* apricot */
  --on-brand: #2a0f0b; /* dark ink on coral (white fails contrast) */
  --success: #4ade80;
  --warning: #facc15;
  --danger: #ff3d6e;
  --info: #38bdf8;
  --aurora: linear-gradient(110deg, var(--brand-1), var(--brand-2) 55%, var(--brand-3));

  --ease-emph: cubic-bezier(0.2, 0, 0, 1);
  --ease-enter: cubic-bezier(0.05, 0.7, 0.1, 1);
  --ease-exit: cubic-bezier(0.3, 0, 0.8, 0.15);
  --spring-bouncy: cubic-bezier(0.34, 1.56, 0.64, 1);
  --d-short: 180ms;
  --d-med: 320ms;
  --d-long: 520ms;

  --r-10: 10px;
  --r-14: 14px;
  --r-20: 20px;
  --r-28: 28px;
  --r-36: 36px;

  --font-display: 'Sora', ui-rounded, system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-body: 'Plus Jakarta Sans', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;

  --gutter: 16px;
  --dock-h: 68px;
  --safe-b: env(safe-area-inset-bottom, 0px);
  --safe-t: env(safe-area-inset-top, 0px);

  /* Dark "Deep Water" (default) */
  color-scheme: dark;
  --canvas: #041113;
  --surface-1: #0a1a1d;
  --surface-2: #0f2428;
  --surface-3: #173236;
  --glass: rgba(9, 27, 30, 0.72);
  --glass-strong: rgba(12, 33, 37, 0.92);
  --hairline: rgba(255, 255, 255, 0.08);
  --edge-hi: rgba(200, 255, 245, 0.16);
  --text: #eef6f4;
  --text-2: #9cb9b6;
  --text-3: #5e7d7a;
  --glow-1: rgba(13, 148, 136, 0.45);
  --glow-2: rgba(14, 94, 112, 0.55);
  --glow-3: rgba(242, 104, 90, 0.2);
  --primary: #ff8a6b;
  --grid: rgba(156, 205, 200, 0.12);
  --vessel: #eef6f4;
  --trail: #2dd4bf;
  --mark: #5eead4;
  --field: rgba(255, 255, 255, 0.05);
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme='dark']) {
    color-scheme: light;
    --canvas: #f1f7f6;
    --surface-1: #ffffff;
    --surface-2: #e3f0ee;
    --surface-3: #d2e5e2;
    --glass: rgba(255, 255, 255, 0.8);
    --glass-strong: rgba(255, 255, 255, 0.95);
    --hairline: rgba(6, 32, 35, 0.09);
    --edge-hi: rgba(255, 255, 255, 0.9);
    --text: #072226;
    --text-2: #3f5e5d;
    --text-3: #86a19f;
    --glow-1: rgba(153, 227, 216, 0.6);
    --glow-2: rgba(178, 220, 232, 0.6);
    --glow-3: rgba(255, 205, 186, 0.6);
    --primary: #c2412f;
    --grid: rgba(63, 94, 93, 0.15);
    --vessel: #072226;
    --trail: #0f766e;
    --mark: #0e7490;
    --field: rgba(6, 32, 35, 0.04);
  }
}
:root[data-theme='light'] {
  color-scheme: light;
  --canvas: #f1f7f6;
  --surface-1: #ffffff;
  --surface-2: #e3f0ee;
  --surface-3: #d2e5e2;
  --glass: rgba(255, 255, 255, 0.8);
  --glass-strong: rgba(255, 255, 255, 0.95);
  --hairline: rgba(6, 32, 35, 0.09);
  --edge-hi: rgba(255, 255, 255, 0.9);
  --text: #072226;
  --text-2: #3f5e5d;
  --text-3: #86a19f;
  --glow-1: rgba(153, 227, 216, 0.6);
  --glow-2: rgba(178, 220, 232, 0.6);
  --glow-3: rgba(255, 205, 186, 0.6);
  --primary: #c2412f;
  --grid: rgba(63, 94, 93, 0.15);
  --vessel: #072226;
  --trail: #0f766e;
  --mark: #0e7490;
  --field: rgba(6, 32, 35, 0.04);
}

/* ------------------------------------------------------------------ base */
*,
*::before,
*::after {
  box-sizing: border-box;
}
html,
body {
  margin: 0;
  height: 100%;
  width: 100%;
  /* App shell: the window itself never scrolls; each screen scrolls vertically inside. */
  position: fixed;
  inset: 0;
  overflow: hidden;
  overscroll-behavior: none;
}
body {
  background: var(--canvas);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.4;
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
  overscroll-behavior: none;
  overflow: hidden;
}
button,
input {
  font: inherit;
  color: inherit;
}
button {
  cursor: pointer;
  border: 0;
  background: none;
  padding: 0;
}
[hidden] {
  display: none !important;
}
svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex: none;
}
h1,
h2 {
  font-family: var(--font-display);
  margin: 0;
  letter-spacing: -0.02em;
}
.tnum {
  font-variant-numeric: tabular-nums;
  font-feature-settings: 'tnum';
}
.sub {
  margin: 0;
  color: var(--text-2);
  font-size: 12px;
}
.section-label {
  display: block;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-3);
}

/* ------------------------------------------------------------------ backdrop */
.backdrop {
  position: fixed;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 0;
}
.glow {
  position: absolute;
  border-radius: 50%;
  will-change: transform;
}
.g1 {
  width: 120vmax;
  height: 120vmax;
  left: -50vmax;
  top: -70vmax;
  background: radial-gradient(closest-side, var(--glow-1), transparent);
  animation: orbit 23s linear infinite;
}
.g2 {
  width: 100vmax;
  height: 100vmax;
  right: -45vmax;
  top: -60vmax;
  background: radial-gradient(closest-side, var(--glow-2), transparent);
  animation: orbit 31s linear infinite;
}
.g3 {
  width: 80vmax;
  height: 80vmax;
  left: 0;
  top: -45vmax;
  background: radial-gradient(closest-side, var(--glow-3), transparent);
  animation: orbit 19s linear infinite reverse;
}
.fade {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 0%, transparent 18%, var(--canvas) 45%);
}
@keyframes orbit {
  from {
    transform: rotate(0deg) translateX(6vmax) rotate(0deg);
  }
  to {
    transform: rotate(360deg) translateX(6vmax) rotate(-360deg);
  }
}

/* ------------------------------------------------------------------ primitives */
.glass {
  border: 1px solid transparent;
  background:
    linear-gradient(var(--glass), var(--glass)) padding-box,
    linear-gradient(135deg, var(--edge-hi), var(--hairline) 45%) border-box;
}
.glass.strong {
  background:
    linear-gradient(var(--glass-strong), var(--glass-strong)) padding-box,
    linear-gradient(135deg, var(--edge-hi), var(--hairline) 45%) border-box;
}
.card {
  border-radius: var(--r-28);
  padding: 14px 16px;
}

.pressable {
  transition: transform 380ms var(--spring-bouncy);
  touch-action: manipulation;
  user-select: none;
  -webkit-user-select: none;
}
.pressable:active {
  transform: scale(0.96);
  transition-duration: 120ms;
}

.reveal {
  animation: reveal 600ms var(--ease-enter) both;
  animation-delay: calc(var(--i, 0) * 65ms);
}
@keyframes reveal {
  from {
    opacity: 0;
    transform: translateY(14px) scale(0.96);
  }
}

.icon-tile {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  color: var(--primary);
  background: color-mix(in srgb, currentColor 10%, transparent);
  flex: none;
}
.icon-tile.success {
  color: var(--success);
}
.icon-tile.warning {
  color: var(--warning);
}
.icon-tile.danger {
  color: var(--danger);
}

/* Buttons */
.btn-aurora {
  white-space: nowrap;
  position: relative;
  overflow: hidden;
  height: 56px;
  padding: 0 24px;
  border-radius: 999px;
  color: var(--on-brand);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.01em;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: linear-gradient(110deg, var(--brand-1), var(--brand-2), var(--brand-3), var(--brand-2), var(--brand-1));
  background-size: 300% 100%;
  animation: drift 6s ease-in-out infinite alternate;
}
.btn-aurora .live-dot {
  display: none;
}
.btn-aurora.busy .live-dot {
  display: block;
}
.btn-aurora.busy::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, transparent 30%, rgba(255, 255, 255, 0.45) 50%, transparent 70%);
  transform: translateX(-100%);
  animation: sheen 1.3s var(--ease-emph) infinite;
}
@keyframes drift {
  from {
    background-position: 0% 50%;
  }
  to {
    background-position: 100% 50%;
  }
}
@keyframes sheen {
  to {
    transform: translateX(100%);
  }
}

.btn-glass {
  white-space: nowrap;
  height: 56px;
  padding: 0 18px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  border: 1px solid transparent;
  background:
    linear-gradient(var(--glass-strong), var(--glass-strong)) padding-box,
    linear-gradient(135deg, var(--edge-hi), var(--hairline) 45%) border-box;
}
.btn-glass.small {
  height: 36px;
  padding: 0 14px;
  font-size: 13px;
}
.btn-glass.icon-only {
  width: 56px;
  padding: 0;
}
.btn-glass.danger {
  color: var(--danger);
}
.btn-glass:disabled,
.btn-aurora:disabled {
  opacity: 0.45;
  pointer-events: none;
}

.icon-btn {
  min-width: 34px;
  height: 34px;
  border-radius: 999px;
  display: inline-grid;
  place-items: center;
  font-weight: 700;
  font-size: 13px;
  color: var(--text);
  background: var(--glass-strong);
  border: 1px solid var(--hairline);
}
.icon-btn.wide {
  padding: 0 12px;
  font-size: 12px;
}
.icon-btn[aria-pressed='true'] {
  color: var(--on-brand);
  border-color: transparent;
  background: var(--aurora);
}

/* Chips */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 26px;
  padding: 0 10px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-2);
  background: var(--glass);
  border: 1px solid var(--hairline);
  white-space: nowrap;
}
.dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--text-3);
  flex: none;
}
.ok .dot {
  background: var(--success);
}
.warn .dot {
  background: var(--warning);
}
.err .dot {
  background: var(--danger);
}
.busy .dot {
  background: var(--info);
  animation: pulse 1.4s ease-in-out infinite;
}
.live-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--on-brand);
  animation: pulse 1.4s ease-in-out infinite;
}
@keyframes pulse {
  0%,
  100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.35;
    transform: scale(0.8);
  }
}

.tag {
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  height: 26px;
  padding: 0 10px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--text-2);
  background: var(--glass-strong);
  border: 1px solid var(--hairline);
}
.tag.sky {
  color: var(--primary);
}

/* Switch */
.switch {
  width: 50px;
  height: 30px;
  border-radius: 999px;
  position: relative;
  background: var(--surface-3);
  border: 1px solid var(--hairline);
  transition: background var(--d-med) var(--ease-emph);
  flex: none;
}
.switch i {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 0 0 0.5px rgba(0, 0, 0, 0.08);
  transition: transform 420ms var(--spring-bouncy);
}
.switch[aria-checked='true'] {
  background: var(--aurora);
  border-color: transparent;
}
.switch[aria-checked='true'] i {
  transform: translateX(20px);
}

/* Segmented control with gliding gradient indicator */
.segmented {
  position: relative;
  display: inline-flex;
  padding: 3px;
  border-radius: 999px;
  background: var(--field);
  border: 1px solid var(--hairline);
  isolation: isolate;
}
.segmented button {
  position: relative;
  z-index: 1;
  height: 30px;
  padding: 0 12px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-2);
  transition: color var(--d-med) var(--ease-emph);
  white-space: nowrap;
}
.segmented button[aria-pressed='true'] {
  color: var(--on-brand);
}
.segmented .indicator {
  position: absolute;
  z-index: 0;
  top: 3px;
  bottom: 3px;
  left: 0;
  border-radius: 999px;
  background: var(--aurora);
  transition:
    transform 420ms var(--spring-bouncy),
    width 420ms var(--spring-bouncy);
}

/* Progress: full-width gradient revealed as it fills */
.progress {
  position: relative;
  height: 6px;
  border-radius: 999px;
  background: var(--surface-3);
  overflow: hidden;
  margin-top: 12px;
}
.progress i {
  position: absolute;
  inset: 0;
  background: var(--aurora);
  clip-path: inset(0 calc(100% - var(--p, 0%)) 0 0 round 999px);
  transition: clip-path var(--d-med) var(--ease-emph);
}
.progress.indeterminate i {
  clip-path: none;
  width: 35%;
  border-radius: 999px;
  animation: comet 1.3s var(--ease-emph) infinite;
}
@keyframes comet {
  from {
    transform: translateX(-100%);
  }
  to {
    transform: translateX(300%);
  }
}

/* Fields */
.field {
  width: 100%;
  height: 40px;
  padding: 0 12px;
  border-radius: var(--r-14);
  border: 1px solid var(--hairline);
  background: var(--field);
  outline: none;
  transition: border-color var(--d-short) var(--ease-emph);
}
.field:focus {
  border-color: var(--brand-2);
}
.field.num {
  width: 92px;
  text-align: right;
}
textarea.field {
  height: 72px;
  padding: 10px 12px;
  resize: none;
}

/* ------------------------------------------------------------------ layout */
#screens {
  position: relative;
  z-index: 1;
  height: 100%;
  overflow: hidden; /* clip the sideways tab transition */
}
.screen {
  position: absolute;
  inset: 0;
  overflow-y: auto;
  overflow-x: hidden;
  touch-action: pan-y;
  -webkit-overflow-scrolling: touch;
  padding: calc(var(--safe-t) + 14px) var(--gutter) calc(var(--dock-h) + var(--safe-b) + 32px);
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 720px;
  margin: 0 auto;
}
.screen.enter-right {
  animation: tab-right var(--d-med) var(--ease-emph) both;
}
.screen.enter-left {
  animation: tab-left var(--d-med) var(--ease-emph) both;
}
@keyframes tab-right {
  from {
    opacity: 0;
    transform: translateX(12.5%);
  }
}
@keyframes tab-left {
  from {
    opacity: 0;
    transform: translateX(-12.5%);
  }
}

/* Pushed screen (playback) */
.screen.pushed {
  z-index: 5;
  background: var(--canvas);
  padding-bottom: calc(var(--safe-b) + 20px);
  max-width: none;
}
.screen.pushed > * {
  width: 100%;
  max-width: 688px;
  margin-left: auto;
  margin-right: auto;
}
.screen.pushed.push-in {
  animation: push-in var(--d-long) var(--ease-enter) both;
}
.screen.pushed.push-out {
  animation: push-in var(--d-med) var(--ease-exit) reverse both;
}
@keyframes push-in {
  from {
    opacity: 0;
    transform: translateY(16.6%) scale(0.98);
  }
}
#screens.pushed-under {
  animation: shrink var(--d-long) var(--ease-enter) both;
}
#screens.pushed-back {
  animation: shrink var(--d-med) var(--ease-emph) reverse both;
}
@keyframes shrink {
  to {
    opacity: 0;
    transform: scale(0.94);
  }
}

/* ------------------------------------------------------------------ live */
.live {
  height: 100%;
  overflow: hidden;
}
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}
.brand h1 {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.03em;
}
.logo {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: var(--aurora);
  color: var(--on-brand);
}
.logo svg {
  width: 22px;
  height: 22px;
  fill: var(--on-brand);
  stroke: none;
}
.logo svg circle {
  fill: var(--brand-3);
}
.chips {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}
#rec-sub.rec {
  color: var(--danger);
  font-weight: 600;
}

.perm {
  display: flex;
  align-items: center;
  gap: 12px;
}
.perm-text {
  flex: 1;
  display: flex;
  flex-direction: column;
  font-size: 12px;
  color: var(--text-2);
}
.perm-text strong {
  color: var(--text);
  font-size: 14px;
}
.perm .btn-glass {
  height: 40px;
}

.viz {
  position: relative;
  flex: 1 1 auto;
  min-height: 240px;
  border-radius: var(--r-28);
  overflow: hidden;
}
.viz canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  touch-action: none;
  display: block;
}
.viz-top {
  position: absolute;
  top: 12px;
  left: 12px;
  right: 12px;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 8px;
  pointer-events: none;
}
.viz-top > * {
  pointer-events: auto;
}
.viz-ctrls {
  display: flex;
  gap: 6px;
}
.sky-readout {
  position: absolute;
  left: 50%;
  bottom: 12px;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 8px 18px 10px;
  border-radius: var(--r-20);
  background: var(--glass-strong);
  border: 1px solid var(--hairline);
  animation: reveal 520ms var(--ease-enter) both;
  min-width: 170px;
}
.sky-readout b {
  font-family: var(--font-display);
  font-size: 30px;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
}
.sky-sub {
  font-size: 11px;
  color: var(--text-2);
}

.readouts {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  flex: none;
}
.tile {
  display: flex;
  flex-direction: column;
  gap: 1px;
  padding: 9px 10px;
  border-radius: var(--r-20);
  background: var(--glass);
  border: 1px solid var(--hairline);
  min-width: 0;
}
.tile b {
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -0.02em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.tile .section-label {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.tile small {
  font-size: 10px;
  color: var(--text-3);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.tile.wide2 {
  grid-column: span 2;
}
.tile b.pos {
  white-space: pre-line;
  line-height: 1.25;
  font-size: 12.5px;
  font-family: var(--font-body);
  font-weight: 700;
  letter-spacing: 0;
  padding: 3px 0 2px;
}

.actions {
  display: flex;
  gap: 10px;
  flex: none;
}
.actions .btn-aurora {
  flex: 1.4;
}
.actions #btn-sky {
  flex: 1;
}
#btn-sky.active {
  color: var(--primary);
}
#btn-sky svg {
  stroke-width: 2;
}

/* ------------------------------------------------------------------ pages */
.page-head {
  padding: 8px 2px 4px;
}
.page-head h2 {
  font-size: 30px;
  font-weight: 800;
  letter-spacing: -0.03em;
}
.screen > .section-label {
  margin: 10px 4px -4px;
}
.group {
  display: flex;
  flex-direction: column;
  padding: 6px 16px;
}
.row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 52px;
  padding: 8px 0;
}
.row + .row,
.hint + .row,
.row + .hint {
  border-top: 1px solid var(--hairline);
}
.row > span small,
.col small {
  display: block;
  color: var(--text-3);
  font-size: 11px;
}
.row.col,
.col {
  flex-direction: column;
  align-items: stretch;
  gap: 6px;
}
.row.two {
  display: grid;
  grid-template-columns: 1fr 1fr;
}
.hint {
  margin: 0;
  padding: 8px 0;
  font-size: 12px;
  color: var(--text-3);
}
.diag {
  font-size: 11px;
  color: var(--text-3);
  padding: 8px 0 10px;
  border-top: 1px solid var(--hairline);
  white-space: pre-wrap;
}

/* Sessions */
.sync-row {
  display: flex;
  align-items: center;
  gap: 12px;
}
.sync-text {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}
.sync-text span {
  font-size: 12px;
  color: var(--text-2);
}
.session-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.session {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border-radius: var(--r-28);
  text-align: left;
  width: 100%;
}
.session.pressable:active {
  transform: scale(0.985);
}
.session .meta {
  flex: 1;
  min-width: 0;
}
.session strong {
  display: block;
  font-size: 15px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.session .meta span {
  font-size: 12px;
  color: var(--text-2);
}
.badge {
  font-size: 11px;
  font-weight: 700;
  white-space: nowrap;
  color: var(--text-3);
}
.badge.ok {
  color: var(--success);
}
.badge.warn {
  color: var(--warning);
}
.badge.rec {
  color: var(--danger);
}
.empty {
  text-align: center;
  color: var(--text-3);
  padding: 30px 0;
}

/* Playback */
.pb-head {
  display: flex;
  align-items: center;
  gap: 12px;
}
.pb-head .icon-btn {
  width: 40px;
  height: 40px;
}
.pb-title {
  min-width: 0;
}
.pb-title h2 {
  font-size: 20px;
  font-weight: 700;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
#screen-playback .viz {
  min-height: 280px;
}
.timeline {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
}
.tl-row {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
}
.play {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--aurora);
  color: var(--on-brand);
  flex: none;
}
.play svg {
  fill: currentColor;
  stroke: none;
  width: 22px;
  height: 22px;
}
.play .i-pause,
.play.playing .i-play {
  display: none;
}
.play.playing .i-pause {
  display: block;
}
.tl-track {
  flex: 1;
  min-width: 0;
}
.tl-times {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: var(--text-3);
}
input[type='range'] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 28px;
  background: transparent;
  --p: 0%;
}
input[type='range']::-webkit-slider-runnable-track {
  height: 6px;
  border-radius: 999px;
  background:
    linear-gradient(110deg, var(--brand-1), var(--brand-2), var(--brand-3)) 0 0 / var(--p) 100% no-repeat,
    var(--surface-3);
}
input[type='range']::-moz-range-track {
  height: 6px;
  border-radius: 999px;
  background: var(--surface-3);
}
input[type='range']::-moz-range-progress {
  height: 6px;
  border-radius: 999px;
  background: var(--aurora);
}
input[type='range']::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  margin-top: -7px;
  border-radius: 50%;
  background: #fff;
  border: 0;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.08);
}
input[type='range']::-moz-range-thumb {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: #fff;
  border: 0;
}
.readouts.compact {
  grid-template-columns: repeat(4, 1fr);
}

/* ------------------------------------------------------------------ dock */
.dock {
  position: fixed;
  z-index: 10;
  left: 50%;
  bottom: calc(var(--safe-b) + 12px);
  transform: translateX(-50%);
  height: var(--dock-h);
  padding: 8px;
  display: flex;
  gap: 4px;
  border-radius: 999px;
  border: 1px solid transparent;
  background:
    linear-gradient(var(--glass-strong), var(--glass-strong)) padding-box,
    linear-gradient(135deg, var(--edge-hi), var(--hairline) 45%) border-box;
  -webkit-backdrop-filter: blur(16px) saturate(1.4);
  backdrop-filter: blur(16px) saturate(1.4);
  transition:
    opacity var(--d-med) var(--ease-emph),
    transform var(--d-med) var(--ease-emph);
}
.dock.hidden {
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, 20px);
}
.dock-tab {
  height: 100%;
  min-width: 52px;
  padding: 0 15px;
  border-radius: 999px;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-2);
  font-weight: 700;
  font-size: 13px;
  transition:
    background var(--d-med) var(--ease-emph),
    color var(--d-med) var(--ease-emph);
}
.dock-tab span {
  max-width: 0;
  overflow: hidden;
  opacity: 0;
  white-space: nowrap;
  transition:
    max-width 480ms var(--spring-bouncy),
    opacity var(--d-short) var(--ease-emph);
}
.dock-tab[aria-current='page'] {
  color: var(--on-brand);
  background: var(--aurora);
}
.dock-tab[aria-current='page'] span {
  max-width: 120px;
  opacity: 1;
}

/* ------------------------------------------------------------------ sheet + toast */
.sheet-scrim {
  position: fixed;
  inset: 0;
  z-index: 20;
  background: rgba(3, 7, 15, 0.5);
  animation: fade-in var(--d-med) var(--ease-emph) both;
}
.sheet {
  position: fixed;
  z-index: 21;
  left: 0;
  right: 0;
  bottom: 0;
  max-width: 560px;
  margin: 0 auto;
  max-height: 88vh;
  overflow-y: auto;
  border-radius: 32px 32px 0 0;
  padding: 10px 20px calc(var(--safe-b) + 20px);
  animation: sheet-in var(--d-long) var(--ease-enter) both;
}
.sheet.closing {
  animation: sheet-in var(--d-med) var(--ease-exit) reverse both;
}
.sheet-scrim.closing {
  animation: fade-in var(--d-med) var(--ease-exit) reverse both;
}
.sheet .grabber {
  width: 40px;
  height: 5px;
  border-radius: 999px;
  background: var(--surface-3);
  margin: 0 auto 14px;
}
.sheet h3 {
  font-family: var(--font-display);
  font-size: 22px;
  letter-spacing: -0.02em;
  margin: 0 0 4px;
}
.sheet .stack {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 14px;
}
.sheet .btn-aurora,
.sheet .btn-glass {
  width: 100%;
}
.sheet .btn-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.ob-row {
  display: flex;
  align-items: center;
  gap: 12px;
}
.ob-row div {
  display: flex;
  flex-direction: column;
  font-size: 12px;
  color: var(--text-2);
}
.ob-row strong {
  font-size: 15px;
  color: var(--text);
}
.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}
.stats .tile b {
  font-size: 16px;
}
@keyframes sheet-in {
  from {
    transform: translateY(100%);
  }
}
@keyframes fade-in {
  from {
    opacity: 0;
  }
}

.toasts {
  position: fixed;
  z-index: 30;
  left: 50%;
  top: calc(var(--safe-t) + 12px);
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  pointer-events: none;
  width: calc(100% - 32px);
  max-width: 420px;
}
.toast {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  background: var(--glass-strong);
  border: 1px solid var(--hairline);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  animation: reveal 420ms var(--ease-enter) both;
  pointer-events: auto;
}
.toast.out {
  animation: fade-in var(--d-short) var(--ease-exit) reverse both;
}
.toast button {
  color: var(--primary);
  font-weight: 700;
}

/* ------------------------------------------------------------------ responsive */
@media (max-width: 380px) {
  .tile b {
    font-size: 17px;
  }
  .btn-aurora {
    padding: 0 16px;
    font-size: 14px;
  }
  .btn-glass {
    padding: 0 12px;
  }
}
@media (max-height: 700px) {
  .readouts .tile {
    padding: 6px 9px;
  }
  .tile b {
    font-size: 16px;
  }
  .btn-aurora,
  .btn-glass {
    height: 50px;
  }
  .btn-glass.icon-only {
    width: 50px;
  }
}
@media (min-width: 760px) {
  .screen.live {
    max-width: 980px;
    display: grid;
    grid-template-columns: 1fr 340px;
    grid-template-rows: auto auto 1fr auto;
    grid-template-areas: 'top top' 'perm perm' 'viz read' 'viz act';
  }
  .topbar {
    grid-area: top;
  }
  .perm {
    grid-area: perm;
  }
  .live .viz {
    grid-area: viz;
  }
  .live .readouts {
    grid-area: read;
    grid-template-columns: 1fr 1fr;
    align-content: start;
  }
  .live .actions {
    grid-area: act;
    flex-direction: column;
  }
}
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 1ms !important;
  }
}