:root {
  --bg: #eef3f6;
  --bg-overlay: radial-gradient(circle at 10% -10%, rgba(25, 167, 206, 0.16), transparent 35%);
  --panel: #ffffff;
  --panel-2: #f7fafc;
  --text: #0d1b2a;
  --muted: #5f7187;
  --stroke: #dbe4ed;
  --accent: #1f7a8c;
  --accent-2: #19a7ce;
  --danger: #c1121f;
  --shadow: 0 12px 34px rgba(13, 27, 42, 0.08);
  --radius: 16px;
  --sidebar-bg: #09111f;
  --sidebar-bg-2: #071222;
  --sidebar-text: #d8e2ef;
  --sidebar-muted: #88a0bf;
  --sidebar-active: rgba(25, 167, 206, 0.18);
}

body[data-theme="dark"] {
  --bg: #081018;
  --bg-overlay: radial-gradient(circle at 12% -12%, rgba(54, 182, 217, 0.22), transparent 42%);
  --panel: #0f1a28;
  --panel-2: #111f30;
  --text: #dde8f3;
  --muted: #9bb1c8;
  --stroke: #23364d;
  --accent: #36b6d9;
  --accent-2: #7ad7f1;
  --danger: #ff6b6b;
  --shadow: 0 12px 34px rgba(0, 0, 0, 0.35);
  --sidebar-bg: #030912;
  --sidebar-bg-2: #040f1f;
  --sidebar-text: #d7e2f0;
  --sidebar-muted: #7f9abb;
  --sidebar-active: rgba(54, 182, 217, 0.2);
}

body[data-theme="extraterrestrial"] {
  --bg: #041109;
  --bg-overlay:
    radial-gradient(circle at 12% -8%, rgba(122, 255, 168, 0.42), transparent 32%),
    radial-gradient(circle at 88% 8%, rgba(41, 255, 151, 0.24), transparent 28%),
    repeating-linear-gradient(-18deg, rgba(101, 255, 156, 0.07) 0 8px, transparent 8px 16px);
  --panel: #092214;
  --panel-2: #0d2c1a;
  --text: #d7ffe4;
  --muted: #8ee0ad;
  --stroke: #1e6a41;
  --accent: #4dff8d;
  --accent-2: #15d876;
  --danger: #ff7aa9;
  --shadow: 0 14px 36px rgba(0, 0, 0, 0.38);
  --sidebar-bg: #01170a;
  --sidebar-bg-2: #04301a;
  --sidebar-text: #deffe8;
  --sidebar-muted: #90d8ab;
  --sidebar-active: rgba(77, 255, 141, 0.2);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  height: 100%;
}

body {
  background: var(--bg-overlay), var(--bg);
  color: var(--text);
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
}

.app-shell {
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: 100dvh;
}

.sidebar {
  background: linear-gradient(190deg, var(--sidebar-bg), var(--sidebar-bg-2));
  border-right: 1px solid rgba(255, 255, 255, 0.06);
  padding: 18px 14px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.brand {
  display: flex;
  gap: 12px;
  align-items: center;
  padding: 4px 6px;
}

.ufo-logo {
  width: 84px;
  height: 84px;
  display: block;
  flex-shrink: 0;
  filter: drop-shadow(0 8px 14px rgba(82, 217, 129, 0.32));
  transform-origin: 50% 50%;
  animation: ufoFloat 2.9s ease-in-out infinite;
}

.project-tagline {
  margin: 0;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: 0.02em;
  color: var(--sidebar-text);
}

.brand p:not(.project-tagline) {
  margin: 0;
  font-size: 11px;
  color: var(--sidebar-muted);
}

@keyframes ufoFloat {
  0% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-5px);
  }
  100% {
    transform: translateY(0px);
  }
}

.alien-title {
  font-family: "Rubik Glitch", "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: clamp(34px, 4.2vw, 56px);
  font-weight: 400;
  letter-spacing: 0.03em;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 14px;
  line-height: 0.95;
}

.zoogle-word {
  display: inline-flex;
  letter-spacing: 0.02em;
}

.google-blue {
  color: #4285f4;
  text-shadow: 0 0 12px rgba(66, 133, 244, 0.35);
}

.google-red {
  color: #ea4335;
  text-shadow: 0 0 12px rgba(234, 67, 53, 0.35);
}

.google-yellow {
  color: #fbbc05;
  text-shadow: 0 0 12px rgba(251, 188, 5, 0.35);
}

.google-green {
  color: #34a853;
  text-shadow: 0 0 12px rgba(52, 168, 83, 0.35);
}

.alien-subtitle-word {
  color: var(--text);
  opacity: 0.92;
  text-shadow: none;
}

body[data-theme="dark"] .alien-subtitle-word {
  opacity: 0.95;
}

body[data-theme="extraterrestrial"] .alien-subtitle-word {
  color: #c9ffd8;
  opacity: 0.96;
}

.nav {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.nav-btn {
  border: 1px solid transparent;
  background: transparent;
  color: var(--sidebar-muted);
  padding: 10px 12px;
  border-radius: 10px;
  text-align: left;
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
}

.nav-btn:hover {
  border-color: rgba(255, 255, 255, 0.08);
  color: var(--sidebar-text);
}

.nav-btn.active {
  background: var(--sidebar-active);
  color: #dff8ff;
  border-color: rgba(25, 167, 206, 0.42);
}

.sidebar-card {
  margin-top: auto;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  padding: 10px;
  display: grid;
  gap: 8px;
  background: rgba(255, 255, 255, 0.03);
}

.stat-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  font-size: 12px;
}

.stat-row span {
  color: var(--sidebar-muted);
}

.theme-btn {
  border: 1px solid rgba(255, 255, 255, 0.14);
  color: var(--sidebar-text);
  background: rgba(255, 255, 255, 0.05);
  border-radius: 10px;
  padding: 9px 12px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
}

.main {
  padding: 22px;
  overflow: auto;
}

.view {
  display: none;
  max-width: 1200px;
  margin: 0 auto;
  gap: 14px;
}

.view.active {
  display: grid;
}

.view-header h2 {
  margin: 0;
  font-size: 30px;
  line-height: 1.05;
}

.view-header p {
  margin: 6px 0 0;
  color: var(--muted);
}

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

.grid.two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.card {
  background: linear-gradient(180deg, var(--panel), var(--panel-2));
  border: 1px solid var(--stroke);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow);
}

.card h3 {
  margin: 0 0 8px;
  font-size: 16px;
}

.card h4 {
  margin: 12px 0 6px;
  font-size: 13px;
}

.field {
  display: grid;
  gap: 6px;
  margin-bottom: 12px;
}

.field label {
  color: var(--muted);
  font-size: 12px;
}

.field input {
  border: 1px solid var(--stroke);
  background: rgba(255, 255, 255, 0.7);
  color: var(--text);
  padding: 10px 12px;
  border-radius: 10px;
  font-family: inherit;
}

body[data-theme="dark"] .field input {
  background: rgba(10, 18, 28, 0.75);
}

body[data-theme="extraterrestrial"] .field input {
  background: rgba(3, 25, 12, 0.75);
}

.field select {
  border: 1px solid var(--stroke);
  background: rgba(255, 255, 255, 0.7);
  color: var(--text);
  padding: 10px 12px;
  border-radius: 10px;
  font-family: inherit;
}

body[data-theme="dark"] .field select {
  background: rgba(10, 18, 28, 0.75);
}

body[data-theme="extraterrestrial"] .field select {
  background: rgba(3, 25, 12, 0.75);
}

.muted {
  color: var(--muted);
}

.meta-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin: 10px 0;
}

.meta-grid > div {
  border: 1px solid var(--stroke);
  border-radius: 10px;
  padding: 9px;
  background: rgba(255, 255, 255, 0.45);
}

body[data-theme="dark"] .meta-grid > div {
  background: rgba(7, 15, 24, 0.5);
}

body[data-theme="extraterrestrial"] .meta-grid > div {
  background: rgba(3, 23, 12, 0.52);
}

.meta-grid span {
  display: block;
  color: var(--muted);
  font-size: 11px;
  margin-bottom: 4px;
}

.meta-grid strong {
  font-size: 14px;
}

.btn-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 10px;
}

.btn {
  border: 1px solid var(--stroke);
  background: var(--panel);
  color: var(--text);
  border-radius: 10px;
  padding: 9px 12px;
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
}

.btn.primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #ecfdff;
  border-color: transparent;
}

.btn.ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.btn.danger:hover {
  border-color: var(--danger);
  color: var(--danger);
}

.pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  border: 1px solid transparent;
}

.pill.pending {
  background: rgba(245, 158, 11, 0.15);
  color: #b96d00;
  border-color: rgba(245, 158, 11, 0.28);
}

.pill.ready {
  background: rgba(16, 185, 129, 0.16);
  color: #0f9a6c;
  border-color: rgba(16, 185, 129, 0.3);
}

.pill.training {
  background: rgba(25, 167, 206, 0.16);
  color: #117c9d;
  border-color: rgba(25, 167, 206, 0.3);
}

.mono {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.letter-chip-lg {
  display: inline-grid;
  place-items: center;
  min-width: 34px;
  height: 34px;
  padding: 0 10px;
  border-radius: 10px;
  background: rgba(25, 167, 206, 0.18);
  border: 1px solid rgba(25, 167, 206, 0.3);
  font-weight: 700;
}

.draw-stack {
  position: relative;
  width: 320px;
  height: 320px;
  border: 1px solid var(--stroke);
  border-radius: 14px;
  overflow: hidden;
  background: #fff;
}

.draw-stack.single {
  width: 320px;
  height: 320px;
}

.draw-stack canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  touch-action: none;
}

#guide-canvas {
  pointer-events: none;
}

.letter-grid {
  display: grid;
  grid-template-columns: repeat(13, minmax(0, 1fr));
  gap: 7px;
}

.letter-cell {
  border: 1px solid var(--stroke);
  border-radius: 8px;
  padding: 7px 6px;
  text-align: center;
  cursor: pointer;
  background: var(--panel);
}

.letter-cell .top {
  font-weight: 700;
  font-size: 13px;
}

.letter-cell .count {
  font-size: 11px;
  color: var(--muted);
}

.letter-cell.active {
  border-color: var(--accent);
  box-shadow: inset 0 0 0 1px var(--accent);
}

.letter-cell.empty {
  opacity: 0.7;
}

.letter-cell.partial {
  background: rgba(245, 158, 11, 0.12);
}

.letter-cell.ready {
  background: rgba(16, 185, 129, 0.12);
}

progress {
  width: 100%;
  height: 12px;
  border-radius: 999px;
  overflow: hidden;
  border: 1px solid var(--stroke);
}

progress::-webkit-progress-bar {
  background: #dce4ee;
}

progress::-webkit-progress-value {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
}

#confusion-canvas {
  width: 100%;
  max-width: 560px;
  border: 1px solid var(--stroke);
  border-radius: 12px;
  background: #fff;
}

.translate-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  min-height: 88px;
  padding: 8px;
  border: 1px dashed var(--stroke);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.5);
}

body[data-theme="dark"] .translate-row {
  background: rgba(10, 18, 28, 0.45);
}

body[data-theme="extraterrestrial"] .translate-row {
  background: rgba(3, 23, 12, 0.45);
}

.translate-cell {
  width: 78px;
  height: 78px;
  border: 1px solid var(--stroke);
  border-radius: 10px;
  overflow: hidden;
  background: #fff;
}

.translate-cell canvas {
  width: 100%;
  height: 100%;
  touch-action: none;
}

.space-token {
  width: 40px;
  height: 78px;
  border: 1px dashed var(--stroke);
  border-radius: 10px;
  display: grid;
  place-items: center;
  color: var(--muted);
  font-weight: 700;
  user-select: none;
}

.output-card .output-main {
  min-height: 58px;
  border: 1px solid var(--stroke);
  border-radius: 12px;
  padding: 12px;
  font-size: 27px;
  font-weight: 700;
  letter-spacing: 0.03em;
  margin-bottom: 10px;
  background: rgba(255, 255, 255, 0.55);
  line-height: 1.3;
  cursor: default;
}

.translate-hover-hint {
  font-size: 12px;
  margin: -2px 2px 10px;
}

body[data-theme="dark"] .output-card .output-main {
  background: rgba(7, 14, 23, 0.5);
}

body[data-theme="extraterrestrial"] .output-card .output-main {
  background: rgba(3, 20, 11, 0.55);
}

.language-switch-card {
  padding: 12px 14px;
}

.language-reference-card {
  display: grid;
  gap: 10px;
}

.language-reference-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
}

.language-reference-head .muted {
  font-size: 12px;
}

.language-reference-image {
  width: 100%;
  max-height: 360px;
  object-fit: contain;
  border: 1px solid var(--stroke);
  border-radius: 12px;
  background: #fff;
}

.translate-reference-block {
  margin-top: 10px;
  display: grid;
  gap: 6px;
}

.translate-reference-block .muted {
  font-size: 12px;
}

.translate-reference-image {
  width: 100%;
  max-width: 420px;
  max-height: 180px;
  object-fit: contain;
  border: 1px solid var(--stroke);
  border-radius: 10px;
  background: #fff;
}

.lang-switch-row {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.language-select-field {
  margin: 0;
  min-width: 280px;
}

.lang-actions {
  margin-top: 0;
}

.translate-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 44px minmax(0, 1fr);
  gap: 10px;
  align-items: stretch;
}

.translate-pane {
  min-height: 310px;
}

.translate-arrow {
  display: grid;
  place-items: center;
  font-size: 30px;
  font-weight: 700;
  color: var(--muted);
}

.output-letter {
  display: inline-block;
  padding: 2px 3px;
  margin: 0 1px;
  border-radius: 6px;
  border: 1px solid transparent;
  transition: background 0.15s, border-color 0.15s;
}

.output-letter:hover {
  background: rgba(25, 167, 206, 0.16);
  border-color: rgba(25, 167, 206, 0.3);
}

.analysis-popover {
  position: fixed;
  z-index: 40;
  width: min(460px, calc(100vw - 24px));
  border: 1px solid var(--stroke);
  border-radius: 14px;
  background: linear-gradient(180deg, var(--panel), var(--panel-2));
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.22);
  padding: 12px;
  pointer-events: none;
}

.analysis-popover.hidden {
  display: none;
}

.analysis-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}

.analysis-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin-bottom: 8px;
}

.analysis-metrics > div {
  border: 1px solid var(--stroke);
  border-radius: 9px;
  padding: 7px;
  background: rgba(255, 255, 255, 0.45);
}

body[data-theme="dark"] .analysis-metrics > div {
  background: rgba(8, 16, 26, 0.55);
}

body[data-theme="extraterrestrial"] .analysis-metrics > div {
  background: rgba(3, 21, 11, 0.58);
}

.analysis-metrics span {
  display: block;
  color: var(--muted);
  font-size: 11px;
}

.analysis-metrics strong {
  font-size: 13px;
}

.analysis-canvas-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin-bottom: 8px;
}

.analysis-canvas-grid canvas,
#analysis-prob-canvas {
  width: 100%;
  border: 1px solid var(--stroke);
  border-radius: 8px;
  background: #fff;
}

.analysis-top-bars {
  margin-top: 8px;
  display: grid;
  gap: 4px;
  max-height: 120px;
  overflow: auto;
}

.analysis-reason {
  margin-top: 8px;
  border: 1px solid var(--stroke);
  border-radius: 10px;
  padding: 8px;
  background: rgba(255, 255, 255, 0.45);
  font-size: 12px;
  line-height: 1.45;
}

body[data-theme="dark"] .analysis-reason {
  background: rgba(8, 16, 26, 0.55);
}

body[data-theme="extraterrestrial"] .analysis-reason {
  background: rgba(3, 21, 11, 0.58);
}

.analysis-top-row {
  display: grid;
  grid-template-columns: 24px 1fr 50px;
  gap: 7px;
  align-items: center;
  font-size: 11px;
}

.mini-canvas-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.mini-label {
  display: inline-block;
  font-size: 11px;
  color: var(--muted);
  margin-bottom: 5px;
}

.mini-canvas-grid canvas {
  width: 100%;
  max-width: 170px;
  border-radius: 10px;
  border: 1px solid var(--stroke);
  background: #fff;
}

.bars-wrap {
  margin-top: 10px;
}

.bars {
  display: grid;
  gap: 5px;
  max-height: 290px;
  overflow: auto;
  padding-right: 4px;
}

.bar-row {
  display: grid;
  grid-template-columns: 24px 1fr 56px;
  gap: 8px;
  align-items: center;
  font-size: 11px;
}

.bar-track {
  height: 8px;
  border-radius: 999px;
  overflow: hidden;
  background: rgba(147, 163, 183, 0.28);
}

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

.contrib-list {
  display: grid;
  gap: 5px;
  max-height: 210px;
  overflow: auto;
  padding-right: 4px;
}

.contrib-row {
  display: grid;
  grid-template-columns: 26px 1fr 70px;
  gap: 8px;
  align-items: center;
  font-size: 11px;
}

.prose p {
  margin: 0 0 12px;
  line-height: 1.65;
}

.about-layout {
  display: grid;
  gap: 14px;
}

.about-steps {
  display: grid;
  gap: 10px;
}

.about-step {
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: 10px;
  align-items: start;
}

.about-step p {
  margin: 0;
  line-height: 1.5;
}

.about-step-num {
  width: 28px;
  height: 28px;
  border-radius: 999px;
  display: grid;
  place-items: center;
  font-size: 12px;
  font-weight: 700;
  color: #ecfdff;
  background: linear-gradient(145deg, var(--accent), var(--accent-2));
}

.about-visual-card canvas {
  width: 100%;
  border-radius: 10px;
  border: 1px solid var(--stroke);
  background: #fff;
}

.about-concepts {
  display: grid;
  gap: 8px;
}

.about-concepts p {
  margin: 0;
}

@media (max-width: 1100px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    border-right: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }

  .nav {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .nav-btn {
    flex: 1 1 calc(50% - 6px);
    text-align: center;
  }

  .grid.two {
    grid-template-columns: 1fr;
  }

  .translate-layout {
    grid-template-columns: 1fr;
  }

  .translate-arrow {
    display: none;
  }
}

@media (max-width: 760px) {
  .main {
    padding: 14px;
  }

  .view-header h2 {
    font-size: 24px;
  }

  .draw-stack,
  .draw-stack.single {
    width: 100%;
    max-width: 320px;
    height: auto;
    aspect-ratio: 1 / 1;
  }

  .meta-grid {
    grid-template-columns: 1fr 1fr;
  }

  .letter-grid {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .language-select-field {
    min-width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .ufo-logo {
    animation: none;
  }
}