:root {
  color-scheme: dark;
  --bg: #02040a;
  --panel: rgba(7, 13, 24, 0.78);
  --panel-strong: rgba(7, 12, 22, 0.92);
  --line: rgba(145, 184, 216, 0.18);
  --line-strong: rgba(145, 205, 240, 0.38);
  --text: #edf6ff;
  --muted: #8ea5ba;
  --sun: #ffc966;
  --cyan: #64d9ef;
  --green: #72d6a4;
  --orange: #f3965e;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
  background: var(--bg);
}

body {
  font-family:
    Inter, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", ui-sans-serif,
    system-ui, -apple-system, "Segoe UI", sans-serif;
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}

#app {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background:
    radial-gradient(ellipse 48% 45% at 50% 46%, rgba(67, 38, 10, 0.18), transparent 72%),
    radial-gradient(ellipse 120% 100% at 50% 50%, #050a14 0%, #02040a 72%);
}

#scene {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  cursor: grab;
  touch-action: none;
}

#scene.is-dragging {
  cursor: grabbing;
}

.labels {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.label {
  position: absolute;
  left: 0;
  top: 0;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-width: 0;
  padding: 4px 9px 4px 7px;
  border: 1px solid rgba(145, 184, 216, 0.22);
  border-radius: 5px;
  background: rgba(5, 10, 18, 0.72);
  color: #dceaf6;
  font: inherit;
  font-size: 12px;
  line-height: 1.35;
  white-space: nowrap;
  letter-spacing: 0;
  pointer-events: auto;
  cursor: pointer;
  transform: translate(-50%, -50%);
  transition:
    border-color 140ms ease,
    background-color 140ms ease,
    color 140ms ease;
  will-change: transform, opacity;
}

.label::before {
  content: "";
  width: 5px;
  height: 5px;
  flex: none;
  border-radius: 50%;
  background: var(--label-color, var(--cyan));
  box-shadow: 0 0 8px var(--label-color, var(--cyan));
}

.label:hover {
  border-color: var(--line-strong);
  background: rgba(8, 16, 28, 0.9);
  color: #fff;
}

.label.is-active {
  border-color: var(--label-color, var(--cyan));
  background: rgba(7, 17, 30, 0.94);
  color: #fff;
}

.labels.is-hidden {
  display: none;
}

.brand {
  position: absolute;
  top: max(22px, env(safe-area-inset-top));
  left: max(24px, env(safe-area-inset-left));
  pointer-events: none;
}

.brand h1 {
  margin: 0;
  font-size: 27px;
  font-weight: 600;
  letter-spacing: 0.13em;
  line-height: 1.1;
}

.brand p {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 10px;
  letter-spacing: 0.28em;
}

.toolbar {
  position: absolute;
  top: max(22px, env(safe-area-inset-top));
  right: max(24px, env(safe-area-inset-right));
  display: flex;
  gap: 5px;
  padding: 5px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  backdrop-filter: blur(16px);
}

.tool {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  padding: 0;
  border: 1px solid transparent;
  border-radius: 6px;
  background: transparent;
  color: #8197aa;
  cursor: pointer;
  transition:
    color 140ms ease,
    border-color 140ms ease,
    background-color 140ms ease;
}

.tool:hover {
  background: rgba(255, 255, 255, 0.06);
  color: #e5f1fb;
}

.tool.is-on {
  border-color: rgba(100, 217, 239, 0.38);
  background: rgba(100, 217, 239, 0.12);
  color: var(--cyan);
}

.tool svg {
  width: 19px;
  height: 19px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.75;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.tool:disabled {
  opacity: 0.32;
  cursor: not-allowed;
}

.tool:disabled:hover {
  background: transparent;
  color: #8197aa;
}

#toggleVoice .icon-mute {
  display: none;
}

body.is-voice-off #toggleVoice {
  border-color: transparent;
  background: transparent;
  color: #8197aa;
}

body.is-voice-off #toggleVoice .icon-mute {
  display: block;
}

body.is-voice-off #toggleVoice svg path:nth-child(2),
body.is-voice-off #toggleVoice svg path:nth-child(3) {
  opacity: 0.25;
}

body.is-recording #exportVideo {
  border-color: rgba(243, 106, 94, 0.55);
  background: rgba(243, 106, 94, 0.16);
  color: #ff9083;
}

body.is-recording .toolbar .tool:not(#exportVideo),
body.is-recording .body-dock,
body.is-recording .labels,
body.is-recording .planet-panel,
body.is-recording .speed-panel {
  pointer-events: none;
}

body.is-formation {
  background: #000;
}

body.is-formation .toolbar .tool:not(#exportVideo),
body.is-formation .brand,
body.is-formation .body-dock,
body.is-formation .labels,
body.is-formation .planet-panel,
body.is-formation .speed-panel {
  display: none;
}

body.is-formation #scene {
  position: absolute;
  inset: 0;
  width: auto;
  height: 100%;
  aspect-ratio: 9 / 16;
  margin: auto;
  pointer-events: none;
}

.export-menu {
  position: absolute;
  top: calc(max(22px, env(safe-area-inset-top)) + 58px);
  right: max(24px, env(safe-area-inset-right));
  z-index: 40;
  width: 214px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel-strong);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(18px);
}

.export-menu__title {
  margin: 0 0 9px;
  color: var(--muted);
  font-size: 10px;
  letter-spacing: 0.16em;
}

.export-menu__options {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 6px;
}

.export-menu__options[hidden],
.export-menu__start[hidden] {
  display: none;
}

.export-menu__options button,
.export-menu__modes button {
  height: 32px;
  padding: 0 6px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.03);
  color: #dceaf6;
  font: inherit;
  font-size: 12px;
  white-space: nowrap;
  cursor: pointer;
  transition:
    border-color 140ms ease,
    background-color 140ms ease,
    color 140ms ease;
}

.export-menu__options button:hover,
.export-menu__modes button:hover {
  border-color: var(--line-strong);
  background: rgba(100, 217, 239, 0.12);
  color: #fff;
}

.export-menu__modes {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px;
  margin-top: 6px;
}

.export-menu__modes button {
  font-size: 11px;
}

.export-menu__modes button[data-mode="formation"],
.export-menu__modes button[data-mode="narration"] {
  grid-column: 1 / -1;
}

.export-menu__start {
  width: 100%;
  height: 38px;
  margin-top: 8px;
  border: 1px solid rgba(100, 217, 239, 0.45);
  border-radius: 6px;
  background: rgba(100, 217, 239, 0.16);
  color: #eafcff;
  font: inherit;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition:
    border-color 140ms ease,
    background-color 140ms ease;
}

.export-menu__start:hover {
  border-color: rgba(100, 217, 239, 0.75);
  background: rgba(100, 217, 239, 0.26);
}

.export-menu__start:disabled {
  opacity: 0.5;
  cursor: default;
}

.export-menu__options button.is-active,
.export-menu__modes button.is-active {
  border-color: rgba(100, 217, 239, 0.45);
  background: rgba(100, 217, 239, 0.14);
  color: #eafcff;
}

.export-menu__hint {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 10px;
  line-height: 1.55;
}

.rec-badge {
  position: absolute;
  top: max(22px, env(safe-area-inset-top));
  left: 50%;
  z-index: 45;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  border: 1px solid rgba(243, 106, 94, 0.42);
  border-radius: 8px;
  background: rgba(26, 8, 8, 0.86);
  color: #ffd9d4;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  transform: translateX(-50%);
  backdrop-filter: blur(16px);
}

.rec-badge[hidden] {
  display: none;
}

.rec-badge__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #f36a5e;
  box-shadow: 0 0 10px #f36a5e;
  animation: pulse 1.1s ease-in-out infinite;
}

#togglePlay .icon-play {
  display: none;
}

body.is-paused #togglePlay .icon-pause {
  display: none;
}

body.is-paused #togglePlay .icon-play {
  display: block;
  fill: currentColor;
  stroke: none;
}

.planet-panel {
  position: absolute;
  top: 86px;
  right: max(24px, env(safe-area-inset-right));
  width: min(264px, calc(100vw - 48px));
  max-height: min(520px, calc(100vh - 194px));
  padding: 17px 18px 16px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--body-accent, var(--sun));
  border-radius: 8px;
  background: var(--panel);
  backdrop-filter: blur(16px);
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: rgba(145, 184, 216, 0.28) transparent;
}

.planet-panel__kicker {
  margin: 0 0 1px;
  color: var(--muted);
  font-size: 10px;
  letter-spacing: 0.24em;
}

.planet-panel__heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-top: 5px;
}

.planet-panel h2 {
  margin: 0;
  font-size: 25px;
  font-weight: 600;
  line-height: 1.15;
}

.planet-panel__heading span {
  color: var(--body-accent, var(--sun));
  font-size: 10px;
  letter-spacing: 0.18em;
}

.planet-panel__description {
  margin: 10px 0 14px;
  color: #a9bdcf;
  font-size: 12px;
  line-height: 1.65;
}

.planet-panel__speak {
  float: right;
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  margin: 9px 0 8px 10px;
  padding: 0;
  border: 1px solid rgba(100, 217, 239, 0.34);
  border-radius: 6px;
  background: rgba(100, 217, 239, 0.1);
  color: var(--body-accent, var(--sun));
  cursor: pointer;
  transition:
    background-color 140ms ease,
    border-color 140ms ease,
    transform 140ms ease;
}

.planet-panel__speak:hover {
  background: rgba(100, 217, 239, 0.2);
  border-color: rgba(100, 217, 239, 0.55);
}

.planet-panel__speak:active {
  transform: scale(0.94);
}

.planet-panel__speak svg {
  width: 16px;
  height: 16px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.planet-panel__speak:disabled {
  opacity: 0.34;
  cursor: not-allowed;
}

.planet-panel__speak[hidden] {
  display: none;
}

.planet-panel__narration {
  margin: 9px 0 14px;
  padding: 10px 12px;
  border-left: 2px solid var(--body-accent, var(--sun));
  border-radius: 0 6px 6px 0;
  background: rgba(145, 184, 216, 0.08);
  color: #d3e6f6;
  font-size: 12px;
  line-height: 1.72;
}

.planet-panel__narration[hidden] {
  display: none;
}

.planet-panel__meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 11px 14px;
  margin: 0;
  padding-top: 14px;
  border-top: 1px solid rgba(145, 184, 216, 0.14);
}

.planet-panel__meta div {
  min-width: 0;
}

.planet-panel__meta dt {
  overflow: hidden;
  color: var(--muted);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.planet-panel__meta dd {
  margin: 4px 0 0;
  color: #edf7ff;
  font-family: var(--mono);
  font-size: 11px;
  font-variant-numeric: tabular-nums;
  line-height: 1.35;
}

.speed-panel {
  position: absolute;
  left: max(24px, env(safe-area-inset-left));
  bottom: max(24px, env(safe-area-inset-bottom));
  width: 226px;
  padding: 13px 14px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  backdrop-filter: blur(16px);
}

.speed-panel__top,
.speed-panel__time {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}

.speed-panel__top span,
.speed-panel__time span {
  color: var(--muted);
  font-size: 10px;
  letter-spacing: 0.13em;
}

.speed-panel output,
.speed-panel__time b {
  color: #eaf7ff;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
}

.speed-panel input[type="range"] {
  width: 100%;
  height: 18px;
  margin: 8px 0 7px;
  accent-color: var(--cyan);
  cursor: pointer;
}

.speed-panel__time {
  padding-top: 8px;
  border-top: 1px solid rgba(145, 184, 216, 0.12);
}

.body-dock {
  position: absolute;
  left: 50%;
  bottom: max(24px, env(safe-area-inset-bottom));
  display: flex;
  gap: 5px;
  width: min(690px, calc(100vw - 560px));
  min-width: 420px;
  padding: 6px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  backdrop-filter: blur(16px);
  overflow-x: auto;
  scrollbar-width: none;
  transform: translateX(-50%);
}

.body-dock::-webkit-scrollbar {
  display: none;
}

.body-dock button {
  flex: 1 0 auto;
  min-width: 54px;
  height: 34px;
  padding: 0 10px;
  border: 1px solid transparent;
  border-radius: 6px;
  background: transparent;
  color: #9eb2c4;
  font: inherit;
  font-size: 12px;
  letter-spacing: 0.04em;
  white-space: nowrap;
  cursor: pointer;
  transition:
    color 140ms ease,
    border-color 140ms ease,
    background-color 140ms ease;
}

.body-dock button:hover {
  background: rgba(255, 255, 255, 0.05);
  color: #eef7ff;
}

.body-dock button.is-active {
  border-color: color-mix(in srgb, var(--body-accent, var(--cyan)) 48%, transparent);
  background: color-mix(in srgb, var(--body-accent, var(--cyan)) 13%, transparent);
  color: #fff;
}

.loading {
  position: absolute;
  left: 50%;
  top: 50%;
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 9px 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel-strong);
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.08em;
  transform: translate(-50%, -50%);
  transition:
    opacity 240ms ease,
    transform 240ms ease;
}

body.is-ready .loading {
  opacity: 0;
  transform: translate(-50%, calc(-50% + 8px));
  pointer-events: none;
}

.loading__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--sun);
  animation: pulse 1.1s ease-in-out infinite;
}

@keyframes pulse {
  0%,
  100% {
    opacity: 0.25;
    transform: scale(0.8);
  }
  50% {
    opacity: 1;
    transform: scale(1);
  }
}

@media (max-width: 1060px) {
  .body-dock {
    left: max(24px, env(safe-area-inset-left));
    width: min(560px, calc(100vw - 300px));
    min-width: 0;
    transform: none;
  }
}

@media (max-width: 760px) {
  .brand {
    top: max(16px, env(safe-area-inset-top));
    left: max(16px, env(safe-area-inset-left));
  }

  .brand h1 {
    font-size: 20px;
    letter-spacing: 0.1em;
  }

  .brand p {
    display: none;
  }

  .toolbar {
    top: max(16px, env(safe-area-inset-top));
    right: max(16px, env(safe-area-inset-right));
    gap: 2px;
    padding: 4px;
  }

  .tool {
    width: 34px;
    height: 34px;
  }

  .tool svg {
    width: 17px;
    height: 17px;
  }

  .export-menu {
    top: calc(max(16px, env(safe-area-inset-top)) + 52px);
    right: max(16px, env(safe-area-inset-right));
    left: max(16px, env(safe-area-inset-left));
    width: auto;
  }

  .rec-badge {
    top: calc(max(16px, env(safe-area-inset-top)) + 172px);
    font-size: 10px;
  }

  .planet-panel {
    top: calc(max(16px, env(safe-area-inset-top)) + 52px);
    left: max(16px, env(safe-area-inset-left));
    right: max(16px, env(safe-area-inset-right));
    width: auto;
    max-height: 29vh;
    padding: 13px 14px 12px;
  }

  .planet-panel__kicker,
  .planet-panel__description {
    display: none;
  }

  .planet-panel__heading {
    margin-top: 0;
  }

  .planet-panel h2 {
    font-size: 20px;
  }

  .planet-panel__meta {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 8px;
    margin-top: 10px;
    padding-top: 10px;
  }

  .planet-panel__meta dt {
    font-size: 9px;
  }

  .planet-panel__meta dd {
    margin-top: 2px;
    font-size: 10px;
  }

  .speed-panel {
    left: max(16px, env(safe-area-inset-left));
    right: max(16px, env(safe-area-inset-right));
    bottom: calc(max(14px, env(safe-area-inset-bottom)) + 54px);
    width: auto;
    padding: 10px 12px 9px;
  }

  .speed-panel input[type="range"] {
    margin: 5px 0 4px;
  }

  .speed-panel__time {
    padding-top: 6px;
  }

  .body-dock {
    left: max(12px, env(safe-area-inset-left));
    right: max(12px, env(safe-area-inset-right));
    bottom: max(12px, env(safe-area-inset-bottom));
    width: auto;
    min-width: 0;
    padding: 5px;
    flex-wrap: wrap;
    justify-content: center;
    gap: 4px;
    transform: none;
  }

  .body-dock button {
    min-width: 46px;
    height: 32px;
    padding: 0 8px;
    font-size: 11px;
  }

  .label {
    padding: 3px 7px 3px 6px;
    font-size: 11px;
  }
}

@media (max-height: 620px) {
  .planet-panel__description {
    display: none;
  }

  .planet-panel {
    max-height: 36vh;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}