:root {
  color-scheme: dark;
  --panel: rgba(8, 14, 18, 0.72);
  --line: rgba(255, 255, 255, 0.16);
  --text: #eef6f2;
  --muted: #9eb2ad;
  --accent: #7df0c0;
  --accent-2: #f0b45a;
  --button: rgba(255, 255, 255, 0.1);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
  background: #020405;
  color: var(--text);
}

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

.shell {
  position: relative;
  width: 100vw;
  height: 100vh;
  height: 100dvh;
  min-height: 0;
  overflow: hidden;
}

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

#fractal:active {
  cursor: grabbing;
}

#deepFractal {
  position: absolute;
  inset: 0;
  z-index: 1;
  width: 100%;
  height: 100%;
  display: block;
  pointer-events: none;
  transform-origin: 0 0;
}

.compare-divider {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 2px;
  z-index: 2;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(125, 240, 192, 0), rgba(125, 240, 192, 0.95), rgba(125, 240, 192, 0));
  box-shadow: 0 0 18px rgba(125, 240, 192, 0.35);
  transform: translateX(-1px);
}

#minimap {
  position: absolute;
  top: 20px;
  right: 20px;
  z-index: 3;
  pointer-events: none;
  width: clamp(124px, 12vw, 160px);
  height: clamp(124px, 12vw, 160px);
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(8, 14, 18, 0.72);
  backdrop-filter: blur(18px);
  box-shadow: 0 18px 70px rgba(0, 0, 0, 0.34);
}

.hud {
  position: absolute;
  top: 20px;
  left: 20px;
  z-index: 4;
  width: min(520px, calc(100vw - 40px));
  max-height: calc(100dvh - 40px);
  overflow-y: auto;
  overscroll-behavior: contain;
  scrollbar-gutter: stable;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  backdrop-filter: blur(18px);
  box-shadow: 0 18px 70px rgba(0, 0, 0, 0.34);
}

.hud::-webkit-scrollbar {
  width: 10px;
}

.hud::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.04);
  border-radius: 999px;
}

.hud::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.22);
  border-radius: 999px;
  border: 2px solid transparent;
  background-clip: content-box;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

#btnHideHud {
  margin-left: auto;
  flex: 0 0 auto;
  width: 30px;
  height: 30px;
  min-height: unset;
  padding: 0;
  font-size: 0.9rem;
  border-radius: 50%;
  opacity: 0.6;
}

#btnHideHud:hover {
  opacity: 1;
}

.show-hud-btn {
  position: absolute;
  top: 20px;
  left: 20px;
  z-index: 4;
  width: 42px;
  height: 42px;
  min-height: unset;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  backdrop-filter: blur(18px);
  font-size: 1.1rem;
  cursor: pointer;
  color: var(--text);
}

.sheet-handle,
.mobile-quickbar,
.mobile-sheet-tabs,
.mobile-hints {
  display: none;
}

.mark {
  width: 42px;
  height: 42px;
  flex: 0 0 auto;
  border-radius: 50%;
  border: 1px solid rgba(125, 240, 192, 0.85);
  background:
    radial-gradient(circle at 50% 50%, rgba(125, 240, 192, 0.95), transparent 24%),
    conic-gradient(from 40deg, #7df0c0, #2a7fff, #f0b45a, #7df0c0);
  box-shadow: 0 0 26px rgba(125, 240, 192, 0.3);
}

h1 {
  margin: 0;
  font-size: 1.15rem;
  line-height: 1.1;
  letter-spacing: 0;
}

p {
  margin: 5px 0 0;
  color: var(--muted);
  font-size: 0.88rem;
}

.readouts {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin: 16px 0;
}

.readouts div {
  padding: 9px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
}

.readouts span,
label > span {
  display: block;
  color: var(--muted);
  font-size: 0.74rem;
  line-height: 1.2;
  text-transform: uppercase;
}

.readouts strong {
  display: block;
  margin-top: 5px;
  font-size: 0.82rem;
  line-height: 1;
  white-space: nowrap;
}

.control-grid {
  display: grid;
  gap: 10px;
}

.control-grid > label,
.formula-row {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr);
  align-items: center;
  gap: 12px;
}

input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
}

input[type="number"],
input[type="search"] {
  width: 100%;
  min-width: 0;
  min-height: 34px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.1);
  color: var(--text);
  padding: 0 8px;
}

select,
.formula-display {
  width: 100%;
  min-width: 0;
  min-height: 34px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.1);
  color: var(--text);
  padding: 0 10px;
}

.catalog-tools {
  display: grid;
  grid-column: 1 / -1;
  grid-template-columns: 92px minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
}

.catalog-tools > span:first-child {
  display: block;
  color: var(--muted);
  font-size: 0.74rem;
  line-height: 1.2;
  text-transform: uppercase;
}

.catalog-search {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 62px 62px;
  gap: 8px;
  min-width: 0;
}

.catalog-search button {
  min-height: 34px;
  padding: 0 8px;
  font-size: 0.78rem;
}

.catalog-meta {
  color: var(--muted);
  font-size: 0.75rem;
  white-space: nowrap;
}

.formula-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px;
  align-items: stretch;
  min-width: 0;
}

.formula-display {
  resize: vertical;
  padding: 8px 10px;
  line-height: 1.4;
  font-family: ui-monospace, "SFMono-Regular", "Cascadia Code", "Segoe UI Mono", Consolas, monospace;
  font-size: 0.8rem;
  color: var(--text);
}

.formula-display[readonly] {
  cursor: text;
}

.composer-panel {
  grid-column: 1 / -1;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.05);
}

.composer-panel > * + * {
  margin-top: 8px;
}

.composer-header-actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

#btnComposerUse,
#btnComposerReset {
  min-width: 74px;
  min-height: 32px;
  padding: 0 10px;
  font-size: 0.78rem;
}

.composer-row,
.composer-step {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr);
  align-items: center;
  gap: 12px;
}

.composer-step span,
.composer-row > span {
  display: block;
  color: var(--muted);
  font-size: 0.74rem;
  line-height: 1.2;
  text-transform: uppercase;
}

.composer-stack {
  display: grid;
  gap: 8px;
}

.composer-summary {
  margin: 0;
  color: var(--text);
  font-family: ui-monospace, "SFMono-Regular", "Cascadia Code", "Segoe UI Mono", Consolas, monospace;
  font-size: 0.78rem;
  line-height: 1.45;
}

.composer-note {
  margin: 0;
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.45;
}

#btnCopyFormula {
  min-width: 60px;
  min-height: 42px;
  align-self: start;
  padding: 0 10px;
  font-size: 0.78rem;
}

select:focus-visible,
input[type="search"]:focus-visible {
  border-color: rgba(125, 240, 192, 0.75);
  outline: none;
}

.formula-display:focus-visible {
  border-color: rgba(125, 240, 192, 0.75);
  outline: none;
}

select optgroup {
  background: #dff8ef;
  color: #0b4938;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

select option {
  background: #ffffff;
  color: #071014;
  font-size: 0.94rem;
  font-weight: 500;
}

.julia-picker {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) 50px;
  gap: 8px;
  min-width: 0;
}

#btnRandomJulia {
  min-height: 34px;
  padding: 0;
  font-size: 0.78rem;
}

.slider-row {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
}

.slider-row input[type="range"] {
  flex: 1;
  min-width: 0;
}

.slider-value {
  flex: 0 0 36px;
  text-align: right;
  font-size: 0.80rem;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}

.buttons {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
  margin-top: 16px;
}

button {
  min-height: 38px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--button);
  color: var(--text);
  cursor: pointer;
}

.buttons button {
  padding: 0 4px;
  font-size: 0.78rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

button:hover,
button:focus-visible {
  border-color: rgba(125, 240, 192, 0.75);
  outline: none;
}

button:disabled {
  cursor: default;
  opacity: 0.48;
}

button.active {
  border-color: rgba(125, 240, 192, 0.9);
  background: rgba(125, 240, 192, 0.16);
}

.tour-panel {
  display: grid;
  gap: 10px;
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.tour-header,
.tour-card-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}

.tour-header strong,
.tour-card-head strong {
  font-size: 0.86rem;
}

#tourMeta,
#tourStopIndex {
  color: var(--muted);
  font-size: 0.75rem;
}

.tour-select-row {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr);
  align-items: center;
  gap: 12px;
}

.tour-card {
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.05);
}

.tour-note {
  margin: 8px 0 0;
  color: var(--text);
  font-size: 0.82rem;
  line-height: 1.5;
}

.tour-actions {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.inspector-panel,
.profiler-panel {
  display: grid;
  gap: 10px;
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.panel-summary {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  min-height: 34px;
  color: var(--text);
  cursor: pointer;
  list-style: none;
}

.panel-summary::-webkit-details-marker {
  display: none;
}

.panel-summary::after {
  content: "+";
  flex: 0 0 auto;
  color: var(--accent);
  font-weight: 700;
}

.collapsible-panel[open] > .panel-summary::after {
  content: "-";
}

.panel-summary strong {
  font-size: 0.86rem;
}

.panel-summary span {
  color: var(--muted);
  font-size: 0.75rem;
}

#profileBudget {
  color: var(--muted);
  font-size: 0.75rem;
}

.inspector-grid,
.profiler-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.inspector-grid div,
.profiler-grid div {
  padding: 9px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.05);
}

.inspector-grid span,
.profiler-grid span {
  display: block;
  color: var(--muted);
  font-size: 0.72rem;
  text-transform: uppercase;
}

.inspector-grid strong,
.profiler-grid strong {
  display: block;
  margin-top: 5px;
  font-size: 0.8rem;
  line-height: 1.25;
  word-break: break-word;
}

.inspector-summary,
.profiler-summary {
  margin: 0;
  color: var(--text);
  font-size: 0.82rem;
  line-height: 1.55;
}

.compare-panel {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.compare-panel > * + * {
  margin-top: 8px;
}

.compare-panel > #btnCompareToggle {
  width: 100%;
}

.compare-row {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr);
  align-items: center;
  gap: 12px;
}

.compare-actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.compare-summary {
  margin: 0;
  color: var(--text);
  font-size: 0.82rem;
  line-height: 1.55;
}

.tips {
  position: absolute;
  right: 20px;
  bottom: 20px;
  z-index: 4;
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
  max-width: min(1000px, calc(100vw - 600px));
}

.tips span {
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(8, 14, 18, 0.62);
  color: var(--muted);
  backdrop-filter: blur(14px);
  font-size: 0.78rem;
}

@media (max-width: 720px) {
  .shell {
    min-height: 0;
  }

  .hud {
    top: auto;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100vw;
    max-height: min(82dvh, 680px);
    padding: 12px 12px calc(14px + env(safe-area-inset-bottom));
    border-right: 0;
    border-bottom: 0;
    border-left: 0;
    border-radius: 12px 12px 0 0;
    box-shadow: 0 -18px 70px rgba(0, 0, 0, 0.44);
    scrollbar-gutter: auto;
    transition: max-height 180ms ease, box-shadow 180ms ease;
  }

  .hud[data-mobile-state="compact"] {
    max-height: calc(190px + env(safe-area-inset-bottom));
    overflow: hidden;
  }

  .hud[data-mobile-state="compact"] .readouts,
  .hud[data-mobile-state="compact"] .mobile-sheet-tabs,
  .hud[data-mobile-state="compact"] .control-grid,
  .hud[data-mobile-state="compact"] .buttons,
  .hud[data-mobile-state="compact"] .tour-panel,
  .hud[data-mobile-state="compact"] .inspector-panel,
  .hud[data-mobile-state="compact"] .profiler-panel,
  .hud[data-mobile-state="compact"] .compare-panel {
    display: none;
  }

  .sheet-handle {
    display: grid;
    place-items: center;
    width: 100%;
    height: 20px;
    min-height: 20px;
    margin: -6px 0 8px;
    padding: 0;
    border: 0;
    background: transparent;
  }

  .sheet-handle span {
    display: block;
    width: 46px;
    height: 4px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.34);
  }

  .hud[data-mobile-state="compact"] .mobile-quickbar {
    display: grid;
  }

  .mobile-hints {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 10px;
  }

  .mobile-hints span {
    padding: 6px 8px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.06);
    color: var(--muted);
    font-size: 0.72rem;
    line-height: 1.2;
  }

  .mobile-quickbar {
    grid-template-columns: 44px 44px minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1.1fr);
    gap: 6px;
    margin-top: 12px;
  }

  .mobile-quickbar button {
    min-height: 42px;
    padding: 0 8px;
    font-size: 0.78rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  #btnMobilePrev,
  #btnMobileNext {
    padding: 0;
    font-size: 1.1rem;
  }

  .hud[data-mobile-state="open"] .mobile-sheet-tabs {
    display: grid;
  }

  .mobile-sheet-tabs {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 6px;
    margin: 0 0 12px;
  }

  .mobile-tab {
    min-height: 40px;
    padding: 0 6px;
    font-size: 0.78rem;
  }

  .mobile-tab.active {
    border-color: rgba(125, 240, 192, 0.9);
    background: rgba(125, 240, 192, 0.16);
  }

  #minimap {
    top: 12px;
    right: 12px;
    bottom: auto;
    width: 108px;
    height: 108px;
    transition: opacity 160ms ease, transform 160ms ease;
  }

  .shell.mobile-sheet-open #minimap {
    opacity: 0;
    transform: translateY(-8px);
  }

  .readouts {
    margin: 14px 0;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .control-grid > label,
  .formula-row,
  .catalog-tools {
    grid-template-columns: 58px minmax(0, 1fr);
  }

  .catalog-tools {
    grid-template-areas:
      "label controls"
      ". meta";
  }

  .catalog-tools > span:first-child {
    grid-area: label;
  }

  .catalog-search {
    grid-area: controls;
    grid-template-columns: minmax(0, 1fr) 58px 58px;
  }

  .catalog-meta {
    grid-area: meta;
  }

  .tour-select-row {
    grid-template-columns: 58px minmax(0, 1fr);
  }

  .compare-row {
    grid-template-columns: 58px minmax(0, 1fr);
  }

  .composer-row,
  .composer-step {
    grid-template-columns: 58px minmax(0, 1fr);
  }

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

  .formula-panel {
    grid-template-columns: minmax(0, 1fr);
  }

  #btnCopyFormula {
    width: 100%;
    min-height: 34px;
  }

  .buttons {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 6px;
  }

  .hud[data-mobile-state="open"][data-mobile-tab="explore"] .formula-row,
  .hud[data-mobile-state="open"][data-mobile-tab="explore"] .composer-panel,
  .hud[data-mobile-state="open"][data-mobile-tab="explore"] .mobile-hints,
  .hud[data-mobile-state="open"][data-mobile-tab="explore"] .tour-panel,
  .hud[data-mobile-state="open"][data-mobile-tab="explore"] .inspector-panel,
  .hud[data-mobile-state="open"][data-mobile-tab="explore"] .profiler-panel,
  .hud[data-mobile-state="open"][data-mobile-tab="explore"] .compare-panel {
    display: none;
  }

  .hud[data-mobile-state="open"][data-mobile-tab="formula"] .control-grid > label,
  .hud[data-mobile-state="open"][data-mobile-tab="formula"] .catalog-tools,
  .hud[data-mobile-state="open"][data-mobile-tab="formula"] .buttons,
  .hud[data-mobile-state="open"][data-mobile-tab="formula"] .mobile-hints,
  .hud[data-mobile-state="open"][data-mobile-tab="formula"] .tour-panel,
  .hud[data-mobile-state="open"][data-mobile-tab="formula"] .inspector-panel,
  .hud[data-mobile-state="open"][data-mobile-tab="formula"] .profiler-panel,
  .hud[data-mobile-state="open"][data-mobile-tab="formula"] .compare-panel {
    display: none !important;
  }

  .hud[data-mobile-state="open"][data-mobile-tab="tours"] .control-grid,
  .hud[data-mobile-state="open"][data-mobile-tab="tours"] .buttons,
  .hud[data-mobile-state="open"][data-mobile-tab="tours"] .mobile-hints,
  .hud[data-mobile-state="open"][data-mobile-tab="tours"] .inspector-panel,
  .hud[data-mobile-state="open"][data-mobile-tab="tours"] .profiler-panel,
  .hud[data-mobile-state="open"][data-mobile-tab="tours"] .compare-panel {
    display: none;
  }

  .hud[data-mobile-state="open"][data-mobile-tab="inspect"] .control-grid,
  .hud[data-mobile-state="open"][data-mobile-tab="inspect"] .buttons,
  .hud[data-mobile-state="open"][data-mobile-tab="inspect"] .mobile-hints,
  .hud[data-mobile-state="open"][data-mobile-tab="inspect"] .tour-panel {
    display: none;
  }

  .show-hud-btn {
    top: auto;
    left: 12px;
    bottom: calc(12px + env(safe-area-inset-bottom));
  }

  .tips {
    display: none;
  }
}

@media (max-width: 480px) {
  .brand {
    gap: 10px;
  }

  .mark {
    width: 36px;
    height: 36px;
  }

  h1 {
    font-size: 1rem;
  }

  p {
    font-size: 0.8rem;
  }

  .readouts {
    gap: 6px;
  }

  .readouts div {
    padding: 8px;
  }

  .control-grid > label,
  .formula-row,
  .catalog-tools,
  .composer-row,
  .composer-step,
  .tour-select-row,
  .compare-row {
    grid-template-columns: 1fr;
    align-items: stretch;
    gap: 6px;
  }

  button,
  select,
  input[type="number"],
  input[type="search"] {
    min-height: 42px;
  }

  .catalog-tools {
    grid-template-areas:
      "label"
      "controls"
      "meta";
  }

  .catalog-search {
    grid-template-columns: minmax(0, 1fr) 64px 64px;
  }

  .tour-actions,
  .compare-actions {
    gap: 6px;
  }

  .inspector-grid,
  .profiler-grid {
    grid-template-columns: 1fr;
  }
}

@media (min-width: 721px) and (max-width: 1160px) {
  .tips {
    display: none;
  }
}