*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:        #f5f2eb;
  --surface:   #faf8f3;
  --surface2:  #ede9e0;
  --border:    rgba(0,0,0,0.09);
  --border2:   rgba(0,0,0,0.15);
  --ink:       #1a1814;
  --ink2:      #4a4640;
  --ink3:      #8a8480;
  --accent:    #2a5caa;
  --accent2:   #b84040;
  --accent3:   #2e7d52;
  --accent4:   #5b4a9e;
  --accent5:   #9a6e00;
  --canvas-bg: #fdfcf8;
  --radius:    6px;
  --shadow:    0 2px 12px rgba(0,0,0,0.08);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg:        #111110;
    --surface:   #181715;
    --surface2:  #1f1e1c;
    --border:    rgba(255,255,255,0.07);
    --border2:   rgba(255,255,255,0.13);
    --ink:       #e8e4dd;
    --ink2:      #9e9a94;
    --ink3:      #5a5650;
    --accent:    #6a9fd8;
    --accent2:   #d47070;
    --accent3:   #5aba80;
    --accent4:   #9a88d8;
    --accent5:   #d4a06a;
    --canvas-bg: #141312;
    --shadow:    0 2px 16px rgba(0,0,0,0.4);
  }
}

:root[data-theme="dark"] {
  --bg:        #111110;
  --surface:   #181715;
  --surface2:  #1f1e1c;
  --border:    rgba(255,255,255,0.07);
  --border2:   rgba(255,255,255,0.13);
  --ink:       #e8e4dd;
  --ink2:      #9e9a94;
  --ink3:      #5a5650;
  --accent:    #6a9fd8;
  --accent2:   #d47070;
  --accent3:   #5aba80;
  --accent4:   #9a88d8;
  --accent5:   #d4a06a;
  --canvas-bg: #141312;
  --shadow:    0 2px 16px rgba(0,0,0,0.4);
}

body {
  background: var(--bg);
  color: var(--ink);
  font-family: system-ui, -apple-system, sans-serif;
  font-size: 17px;
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.sans { font-family: system-ui, -apple-system, sans-serif; }
.mono { font-family: 'JetBrains Mono', monospace; }

canvas {
  display: block;
  width: 100%;
  border-radius: var(--radius);
  background: var(--canvas-bg);
  border: 1px solid var(--border2);
}
canvas.mode3d { cursor: grab; touch-action: none; }
canvas.mode3d:active { cursor: grabbing; }

input[type=number], input[type=text], select {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border2);
  color: var(--ink);
  border-radius: 4px;
  padding: 7px 10px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 15px;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
  -moz-appearance: textfield;
}
input[type=number]::-webkit-inner-spin-button { -webkit-appearance: none; }
input[type=number]:focus, input[type=text]:focus, select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent) 15%, transparent);
}
select option { background: var(--surface2); }

.btn {
  font-family: system-ui, -apple-system, sans-serif;
  font-size: 15px;
  font-weight: 400;
  border-radius: 4px;
  padding: 7px 13px;
  cursor: pointer;
  transition: background 0.12s, opacity 0.12s, transform 0.1s;
  white-space: nowrap;
  border: none;
}
.btn:active { transform: scale(0.97); }
.btn-fill { background: var(--accent); color: #fff; }
.btn-fill:hover { opacity: 0.88; }
.btn-outline {
  background: transparent;
  color: var(--ink2);
  border: 1px solid var(--border2);
}
.btn-outline:hover { background: var(--surface2); color: var(--ink); }

.btn-mode {
  font-family: 'JetBrains Mono', monospace;
  font-size: 14px;
  border-radius: 4px;
  padding: 5px 11px;
  cursor: pointer;
  transition: background 0.12s, color 0.12s;
  white-space: nowrap;
  border: 1px solid var(--border2);
  background: transparent;
  color: var(--ink3);
}
.btn-mode.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.fieldlabel {
  font-size: 14px;
  font-family: 'JetBrains Mono', monospace;
  color: var(--ink3);
  letter-spacing: 0.04em;
  margin-bottom: 4px;
  display: block;
}

.panel {
  border: 1px solid var(--border2);
  border-radius: var(--radius);
  overflow: hidden;
}
.panel-head {
  padding: 10px 12px;
  background: var(--surface2);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  user-select: none;
}
.panel-head .ph-title {
  font-family: 'JetBrains Mono', monospace;
  font-size: 14px;
  color: var(--ink3);
  display: flex;
  align-items: center;
  gap: 6px;
}
.panel-head .ph-icon { font-size: 15px; transition: transform 0.2s; }
.panel-head.collapsed .ph-icon { transform: rotate(-90deg); }
.panel-body {
  padding: 12px;
  background: var(--surface);
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.panel-body.collapsed { display: none; }

.result-box {
  border-radius: 4px;
  padding: 8px 11px;
  background: color-mix(in srgb, var(--accent) 8%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 20%, transparent);
  font-family: 'JetBrains Mono', monospace;
  font-size: 14px;
  color: var(--ink2);
  line-height: 1.7;
}

.toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 9px 12px;
  border-radius: var(--radius);
  border: 1px solid var(--border2);
  background: var(--surface);
  cursor: pointer;
  user-select: none;
  transition: background 0.12s;
}
.toggle-row:hover { background: var(--surface2); }
.toggle-switch {
  position: relative;
  width: 32px;
  height: 18px;
  flex-shrink: 0;
}
.toggle-switch input { opacity: 0; width: 0; height: 0; position: absolute; }
.toggle-track {
  position: absolute;
  inset: 0;
  border-radius: 9px;
  background: var(--surface2);
  border: 1px solid var(--border2);
  transition: background 0.2s, border-color 0.2s;
}
.toggle-switch input:checked ~ .toggle-track {
  background: color-mix(in srgb, #c8960c 70%, transparent);
  border-color: #c8960c;
}
.toggle-thumb {
  position: absolute;
  top: 2px; left: 2px;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--ink3);
  transition: transform 0.18s, background 0.2s;
}
.toggle-switch input:checked ~ .toggle-track .toggle-thumb {
  transform: translateX(14px);
  background: #fff;
}

.tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  padding: 1px 6px;
  border-radius: 3px;
  white-space: nowrap;
}
.badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 14px;
  padding: 4px 10px;
  border-radius: 20px;
  border: 1px solid;
}

.vitem {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 10px;
  border-radius: 4px;
  border: 1px solid var(--border);
  background: var(--surface);
  font-size: 15px;
  animation: appear 0.22s cubic-bezier(0.34,1.4,0.64,1);
}
@keyframes appear {
  from { opacity: 0; transform: translateY(5px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes disappear {
  to { opacity: 0; transform: scale(0.93); }
}
.vitem.removing { animation: disappear 0.18s ease forwards; }
.dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }
.remove-btn {
  margin-left: auto;
  background: none;
  border: none;
  color: var(--ink3);
  cursor: pointer;
  font-size: 16px;
  line-height: 1;
  padding: 1px 4px;
  border-radius: 3px;
  transition: color 0.12s, background 0.12s;
}
.remove-btn:hover {
  color: var(--accent2);
  background: color-mix(in srgb, var(--accent2) 12%, transparent);
}

.slider-row {
  display: flex;
  align-items: center;
  gap: 8px;
}
.slider-row .sl-name {
  font-family: 'JetBrains Mono', monospace;
  font-size: 14px;
  min-width: 36px;
  flex-shrink: 0;
  color: var(--ink3);
}
.slider-row input[type=range] {
  flex: 1;
  height: 3px;
  border-radius: 2px;
  accent-color: var(--accent);
  cursor: pointer;
  background: var(--surface2);
  border: none;
  padding: 0;
  outline: none;
}
.slider-row .sl-val {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  color: var(--ink3);
  min-width: 40px;
  text-align: right;
}

.canvas-wrap { position: relative; }
#zoom-badge {
  position: absolute;
  bottom: 10px; right: 10px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  color: var(--ink3);
  background: var(--surface);
  border: 1px solid var(--border2);
  border-radius: 3px;
  padding: 2px 7px;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s;
}
#zoom-badge.visible { opacity: 1; }

::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-thumb { background: var(--surface2); border-radius: 2px; }

.page-header {
  margin-bottom: 1.75rem;
}
.page-header h1 {
  font-family: system-ui, -apple-system, sans-serif;
  font-size: 1.8rem;
  font-weight: 500;
  color: var(--ink);
}
.page-header p {
  color: var(--ink2);
  font-size: 15px;
  font-family: system-ui, -apple-system, sans-serif;
  margin-top: 3px;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: system-ui, -apple-system, sans-serif;
  font-size: 15px;
  color: var(--ink3);
  text-decoration: none;
  padding: 4px 8px 4px 4px;
  border-radius: 4px;
  margin-bottom: 0;
  transition: color 0.15s, background 0.15s;
}
.back-link:hover { color: var(--ink); background: var(--surface2); }

.lang-switcher {
  display: flex;
  gap: 4px;
}
.lang-btn {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  padding: 3px 8px;
  border-radius: 3px;
  cursor: pointer;
  border: 1px solid var(--border2);
  background: transparent;
  color: var(--ink3);
  transition: background 0.12s, color 0.12s;
}
.lang-btn.active {
  background: var(--surface2);
  color: var(--ink2);
  border-color: var(--border2);
}
.lang-btn:hover:not(.active) { background: var(--surface); color: var(--ink); }

[data-lang] { display: none; }
body[data-active-lang="en"] [data-lang="en"],
body[data-active-lang="ja"] [data-lang="ja"],
body[data-active-lang="id"] [data-lang="id"] { display: inline; }
body[data-active-lang="en"] [data-lang-block="en"],
body[data-active-lang="ja"] [data-lang-block="ja"],
body[data-active-lang="id"] [data-lang-block="id"] { display: block; }

.page-shell {
  max-width: 64rem;
  margin-left: auto;
  margin-right: auto;
  padding: 1.25rem 1rem;
}


.main-layout {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.canvas-column {
  flex: 1;
  width: 100%;
}
.controls-column {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

@media (min-width: 640px) {
  .page-shell { padding: 2rem 1.25rem; }
}
@media (min-width: 1024px) {
  .main-layout {
    flex-direction: row;
    align-items: flex-start;
  }
  .canvas-column { min-width: 0; }
  .controls-column {
    width: 280px;
    flex-shrink: 0;
  }
}
@media (min-width: 1280px) {
  .page-shell { max-width: 80rem; }
  .controls-column { width: 320px; }
}

.info-strip {
  border-left: 2px solid var(--border2);
  padding: 10px 12px;
}
.info-strip p {
  font-size: 15px;
  font-family: system-ui, -apple-system, sans-serif;
  color: var(--ink2);
  line-height: 1.7;
}

.lc-row { display: flex; align-items: center; gap: 8px; }
.lc-row .lc-name { font-family: 'JetBrains Mono', monospace; font-size: 14px; min-width: 26px; flex-shrink: 0; }
.lc-row input[type=range] { flex: 1; height: 3px; border-radius: 2px; accent-color: var(--accent); cursor: pointer; background: var(--surface2); border: none; padding: 0; outline: none; }
.lc-row .lc-val { font-family: 'JetBrains Mono', monospace; font-size: 13px; color: var(--ink3); min-width: 36px; text-align: right; }
.lc-result-box { border-radius: 4px; padding: 7px 10px; background: color-mix(in srgb, var(--accent) 8%, transparent); border: 1px solid color-mix(in srgb, var(--accent) 20%, transparent); font-family: 'JetBrains Mono', monospace; font-size: 14px; color: var(--ink2); line-height: 1.6; }
.span-badge { display: inline-flex; align-items: center; gap: 5px; font-family: 'JetBrains Mono', monospace; font-size: 14px; padding: 4px 10px; border-radius: 20px; border: 1px solid; }
.span-dot { width: 7px; height: 7px; border-radius: 50%; flex-shrink: 0; }
.basis-pill { display: inline-block; padding: 2px 8px; border-radius: 3px; font-family: 'JetBrains Mono', monospace; font-size: 13px; margin: 2px; }
.basis-block { border-radius: 4px; padding: 8px 10px; background: var(--surface2); font-family: 'JetBrains Mono', monospace; font-size: 13px; color: var(--ink2); line-height: 1.8; }

.matrix-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  padding: 10px;
  background: var(--surface2);
  border-radius: 4px;
  border: 1px solid var(--border2);
  position: relative;
}
.matrix-grid::before,
.matrix-grid::after {
  content: '';
  position: absolute;
  top: 6px; bottom: 6px;
  width: 3px;
  border: 1.5px solid var(--ink3);
  opacity: 0.35;
}
.matrix-grid::before { left: 4px; border-right: none; }
.matrix-grid::after  { right: 4px; border-left: none; }

.stats-bar {
  margin-top: 8px;
  font-size: 14px;
  color: var(--ink3);
  min-height: 20px;
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  font-family: 'JetBrains Mono', monospace;
}

.hint-strip {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 7px 10px;
  border-radius: 4px;
  border: 1px solid var(--border);
  background: var(--surface);
  font-size: 14px;
  font-family: 'JetBrains Mono', monospace;
  color: var(--ink3);
  margin-top: 6px;
}




input[type="checkbox"] {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 4px;
  border: 1px solid var(--border);
  background-color: var(--surface2);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s cubic-bezier(0.2, 0.8, 0.2, 1);
  flex-shrink: 0;
}
input[type="checkbox"]:hover { border-color: var(--accent); }
input[type="checkbox"]:checked { background-color: var(--accent); border-color: var(--accent); }
input[type="checkbox"]::after {
  content: ""; width: 4px; height: 8px; border: solid white; border-width: 0 2px 2px 0;
  transform: rotate(45deg) scale(0); transition: transform 0.2s cubic-bezier(0.2, 0.8, 0.2, 1); margin-bottom: 2px;
}
input[type="checkbox"]:checked::after { transform: rotate(45deg) scale(1); }

select {
  -webkit-appearance: none; appearance: none; padding-right: 28px !important;
  background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
  background-repeat: no-repeat; background-position: right 8px center; background-size: 14px;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.dark select {
  background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23ffffff' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
}
select:hover { border-color: var(--accent); }

input[type="range"] { -webkit-appearance: none; appearance: none; background: transparent; cursor: pointer; height: 20px; }
input[type="range"]::-webkit-slider-runnable-track { width: 100%; height: 4px; background: var(--border); border-radius: 2px; transition: background 0.2s; }
input[type="range"]:hover::-webkit-slider-runnable-track { background: color-mix(in srgb, var(--border) 80%, var(--accent)); }
input[type="range"]::-webkit-slider-thumb { -webkit-appearance: none; appearance: none; height: 16px; width: 16px; border-radius: 50%; background: #ffffff; border: 2px solid var(--accent); margin-top: -6px; box-shadow: 0 2px 5px rgba(0,0,0,0.15); transition: transform 0.2s cubic-bezier(0.2, 0.8, 0.2, 1), box-shadow 0.2s; }
input[type="range"]:active::-webkit-slider-thumb { transform: scale(1.2); box-shadow: 0 3px 8px rgba(0,0,0,0.2); }
input[type="range"]::-moz-range-track { width: 100%; height: 4px; background: var(--border); border-radius: 2px; }
input[type="range"]::-moz-range-thumb { height: 16px; width: 16px; border-radius: 50%; background: #ffffff; border: 2px solid var(--accent); box-shadow: 0 2px 5px rgba(0,0,0,0.15); transition: transform 0.2s, box-shadow 0.2s; }
input[type="range"]:active::-moz-range-thumb { transform: scale(1.2); box-shadow: 0 3px 8px rgba(0,0,0,0.2); }

::selection { background-color: color-mix(in srgb, var(--accent) 30%, transparent); color: var(--ink); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
input:focus-visible, select:focus-visible, button:focus-visible { box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 25%, transparent); outline: none; }


.sticky-header {
  position: sticky; top: 0; z-index: 100;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(8px);
  padding: 12px 0; margin-bottom: 20px;
  border-bottom: 1px solid color-mix(in srgb, var(--border) 50%, transparent);
}
.sticky-footer {
  position: sticky; bottom: 0; z-index: 100;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(8px);
  border-top: 1px solid color-mix(in srgb, var(--border) 50%, transparent);
}
.page-shell {
  padding-bottom: 100px !important;
  flex: 1;
  display: flex;
  flex-direction: column;
  width: 100%;
  min-width: 0;
}


.module-header { display: flex; align-items: center; justify-content: space-between; flex-wrap: nowrap !important; }
.header-actions { display: flex; align-items: center; gap: 12px; }
.docs-btn {
  font-family: 'JetBrains Mono', monospace; font-size: 13px; color: var(--ink3);
  text-decoration: none; border: 1px solid var(--border2); padding: 0 12px;
  height: 32px; box-sizing: border-box;
  border-radius: 4px; background: var(--surface2); display: flex; align-items: center; justify-content: center; gap: 6px;
  transition: background 0.15s, color 0.15s; white-space: nowrap;
}
.docs-btn:hover { background: var(--surface); color: var(--ink); }
.custom-lang-dropdown { position: relative; display: flex; align-items: center; height: 32px; }
.lang-btn-icon, .theme-btn-icon {
  background: var(--surface2);
  border: 1px solid var(--border2);
  color: var(--ink3);
  font-size: 15px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
  padding: 0;
}
.lang-btn-icon:hover, .theme-btn-icon:hover {
  color: var(--ink);
  background: var(--surface);
  border-color: var(--border2);
}
.lang-menu {
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: 6px;
  background: var(--surface);
  border: 1px solid var(--border2);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  list-style: none;
  padding: 4px 0;
  min-width: 130px;
  z-index: 1000;
  display: none;
}
.lang-menu.show { display: block; }
.lang-menu li button {
  width: 100%;
  text-align: left;
  padding: 8px 16px;
  background: none;
  border: none;
  font-family: system-ui, -apple-system, sans-serif;
  font-size: 14px;
  color: var(--ink2);
  cursor: pointer;
  transition: background 0.1s;
}
.lang-menu li button:hover {
  background: var(--surface2);
  color: var(--ink);
}
.lang-menu li button.active {
  color: var(--accent);
  font-weight: 500;
  background: color-mix(in srgb, var(--accent) 8%, transparent);
}
@media (max-width: 640px) {
  .back-text, .docs-text { display: none; }
  .back-link i { margin-right: 0; }
  .back-link { padding: 6px 8px; margin-right: auto; }
  .docs-btn { padding: 6px 10px; }
  .header-actions { gap: 8px; }
  
  .sticky-header, .page-header, .main-layout, .tab-bar, .ref-container {
    padding-left: 1rem !important;
    padding-right: 1rem !important;
  }
}