:root {
  color-scheme: dark;
  --bg: #101412;
  --panel: #151b18;
  --panel-2: #1a211e;
  --ink: #e2e9e4;
  --muted: #8e9b93;
  --faint: #526057;
  --line: #738078;
  --strong-line: #b9c4bc;
  --button-ink: #101412;
  --button-bg: #d8e0da;
  --shadow: rgb(0 0 0 / 45%);
  --gold: #d9c782;
  --warm: #d99c7b;
  --cyan: #83bdbe;
  --green: #87aa7a;
  --violet: #aaa0c9;
  --shrimp: #c98d7f;
  --cell-size: 14px;
  --cell-line: 1.25;
}

html[data-theme="light"] {
  color-scheme: light;
  --bg: #f1f0e9;
  --panel: #e8e7df;
  --panel-2: #ddddd4;
  --ink: #1c2420;
  --muted: #5e6962;
  --faint: #939b96;
  --line: #657069;
  --strong-line: #29332d;
  --button-ink: #f3f1eb;
  --button-bg: #202a24;
  --shadow: rgb(38 42 39 / 22%);
  --gold: #8b6f18;
  --warm: #9f4d29;
  --cyan: #19737a;
  --green: #41753a;
  --violet: #665594;
  --shrimp: #a44e43;
}

* { box-sizing: border-box; }

html, body { width: 100%; min-height: 100%; }

body {
  margin: 0;
  overflow: hidden;
  background: var(--bg);
  color: var(--ink);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  -webkit-tap-highlight-color: transparent;
  overscroll-behavior: none;
}

button, a { font: inherit; }
button { color: inherit; }
button:focus-visible, a:focus-visible { outline: 2px solid var(--ink); outline-offset: 3px; }

.app {
  width: 100%;
  min-width: 0;
  max-width: 100vw;
  height: 100vh;
  height: 100svh;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  overflow: hidden;
  background: var(--bg);
}

.topbar {
  position: relative;
  z-index: 5;
  min-height: 58px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: max(10px, env(safe-area-inset-top)) max(14px, env(safe-area-inset-right)) 10px max(14px, env(safe-area-inset-left));
  border-bottom: 1px solid var(--line);
  background: var(--bg);
}

.brand {
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 11px;
  color: inherit;
  text-decoration: none;
  white-space: nowrap;
}

.brand span { color: var(--muted); font-size: .72rem; }
.brand strong { overflow: hidden; font-size: clamp(.72rem, 2.8vw, .92rem); letter-spacing: .09em; text-overflow: ellipsis; }

.top-actions { flex: 0 0 auto; display: flex; align-items: center; gap: 12px; }
.coins { display: flex; align-items: baseline; gap: 5px; font-variant-numeric: tabular-nums; }
.coins span { color: var(--muted); font-size: .78rem; }
.coins strong { font-size: 1.02rem; }

.icon-button, .shop-button, .food-picker, .close-button, .tabs button, .segmented button,
.catalog-button, .quick-food button, .danger-button, .debug-panel button {
  border: 1px solid var(--line);
  border-radius: 0;
  background: transparent;
  cursor: pointer;
}

.icon-button { min-width: 44px; min-height: 38px; padding: 7px; font-size: .72rem; }
.icon-button:hover, .shop-button:hover, .tabs button:hover, .catalog-button:hover { border-color: var(--ink); background: var(--panel); }

.tank-area { width: 100%; min-width: 0; min-height: 0; display: grid; grid-template-rows: auto minmax(0, 1fr) auto; overflow: hidden; }

.interaction-bar {
  position: relative;
  z-index: 3;
  width: 100%;
  min-width: 0;
  min-height: 48px;
  display: grid;
  grid-template-columns: minmax(116px, auto) 1fr auto;
  align-items: stretch;
  border-bottom: 1px solid var(--faint);
  background: var(--panel);
}

.food-picker {
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border: 0;
  border-right: 1px solid var(--faint);
  text-align: left;
}
.food-picker span { color: var(--muted); font-size: .57rem; letter-spacing: .12em; }
.food-picker strong { font-size: .75rem; }
.food-picker small { color: var(--muted); font-size: .66rem; }
.food-picker:hover { background: var(--panel-2); }

.interaction-bar p {
  align-self: center;
  margin: 0;
  padding: 0 14px;
  color: var(--muted);
  font-size: .65rem;
  text-align: center;
}

.shop-button { min-width: 84px; padding: 8px 14px; border-width: 0 0 0 1px; border-color: var(--faint); font-size: .7rem; font-weight: 800; letter-spacing: .08em; }
.shop-button span { color: var(--gold); }

.tank-viewport {
  position: relative;
  width: 100%;
  min-width: 0;
  min-height: 0;
  overflow: hidden;
  cursor: grab;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
  scrollbar-width: none;
}
.tank-viewport::-webkit-scrollbar { display: none; }
.tank-viewport.dragging { cursor: grabbing; }

#tank {
  width: max-content;
  min-width: 100%;
  min-height: 100%;
  margin: 0;
  padding-block: 10px;
  padding-inline: max(0px, calc((100vw - 126ch) / 2));
  color: var(--ink);
  font: 500 var(--cell-size)/var(--cell-line) ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  letter-spacing: 0;
  white-space: pre;
  pointer-events: none;
}

#tank .faint { color: var(--faint); }
#tank .muted { color: var(--muted); }
#tank .neutral { color: var(--ink); }

html:not(.color-terminal) #tank .gold,
html:not(.color-terminal) #tank .warm,
html:not(.color-terminal) #tank .cyan,
html:not(.color-terminal) #tank .green,
html:not(.color-terminal) #tank .violet,
html:not(.color-terminal) #tank .shrimp { color: var(--ink); }

html.color-terminal #tank .gold { color: var(--gold); }
html.color-terminal #tank .warm { color: var(--warm); }
html.color-terminal #tank .cyan { color: var(--cyan); }
html.color-terminal #tank .green { color: var(--green); }
html.color-terminal #tank .violet { color: var(--violet); }
html.color-terminal #tank .shrimp { color: var(--shrimp); }

.pan-hint {
  display: none;
  align-items: center;
  justify-content: center;
  gap: 12px;
  height: 23px;
  border-top: 1px solid var(--faint);
  color: var(--faint);
  background: var(--bg);
  font-size: .52rem;
  letter-spacing: .1em;
}

.quick-food {
  width: 100%;
  min-width: 0;
  min-height: 61px;
  display: flex;
  align-items: stretch;
  gap: 6px;
  padding: 7px max(10px, env(safe-area-inset-right)) max(7px, env(safe-area-inset-bottom)) max(10px, env(safe-area-inset-left));
  overflow-x: auto;
  border-top: 1px solid var(--line);
  background: var(--panel);
  scrollbar-width: none;
}
.quick-food::-webkit-scrollbar { display: none; }
.quick-food button {
  min-width: 92px;
  min-height: 46px;
  display: grid;
  grid-template-columns: auto auto;
  grid-template-rows: auto auto;
  align-content: center;
  justify-content: space-between;
  gap: 2px 8px;
  padding: 7px 9px;
  text-align: left;
}
.quick-food button strong { grid-column: 1 / -1; font-size: .66rem; letter-spacing: .04em; }
.quick-food button span { color: var(--muted); font-size: .6rem; }
.quick-food button small { justify-self: end; color: var(--muted); font-size: .59rem; }
.quick-food button.active { border-color: var(--ink); background: var(--button-bg); color: var(--button-ink); }
.quick-food button.active span, .quick-food button.active small { color: inherit; opacity: .7; }
.quick-food button:disabled { opacity: .42; cursor: default; }

.scrim {
  position: fixed;
  inset: 0;
  z-index: 20;
  background: rgb(0 0 0 / 55%);
}

.sheet {
  position: fixed;
  z-index: 21;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(100%, 510px);
  display: grid;
  grid-template-rows: auto auto minmax(0, 1fr);
  border-left: 1px solid var(--line);
  background: var(--bg);
  box-shadow: -18px 0 55px var(--shadow);
}
.sheet[hidden], .scrim[hidden], .discovery[hidden] { display: none; }

.sheet-header {
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: max(16px, env(safe-area-inset-top)) 18px 14px;
  border-bottom: 1px solid var(--line);
}
.sheet-header p { margin: 0 0 3px; color: var(--muted); font-size: .56rem; letter-spacing: .18em; }
.sheet-header h1 { margin: 0; font-size: 1.05rem; letter-spacing: -.02em; }
.close-button { width: 44px; height: 44px; font-size: 1.45rem; line-height: 1; }

.tabs { display: flex; overflow-x: auto; border-bottom: 1px solid var(--line); scrollbar-width: none; }
.tabs::-webkit-scrollbar { display: none; }
.tabs button { min-width: max-content; flex: 1 0 auto; padding: 13px 12px; border-width: 0 1px 0 0; color: var(--muted); font-size: .62rem; letter-spacing: .08em; }
.tabs button.active { background: var(--button-bg); color: var(--button-ink); }

.catalog { min-height: 0; overflow-y: auto; padding: 12px 12px max(22px, env(safe-area-inset-bottom)); }
.catalog-empty { padding: 45px 18px; color: var(--muted); font-size: .72rem; line-height: 1.65; text-align: center; }

.catalog-card {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  min-height: 103px;
  padding: 11px;
  border-bottom: 1px solid var(--faint);
}
.catalog-card:last-child { border-bottom: 0; }
.catalog-card.locked { color: var(--muted); }
.catalog-art {
  min-height: 70px;
  display: grid;
  place-items: center;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--faint);
  color: var(--muted);
  font-size: .7rem;
  line-height: 1.12;
  text-align: center;
}
.catalog-copy { min-width: 0; }
.catalog-copy h2 { margin: 0; font-size: .75rem; line-height: 1.2; letter-spacing: .03em; }
.catalog-copy p { margin: 6px 0 0; color: var(--muted); font-size: .62rem; line-height: 1.4; }
.catalog-copy small { display: block; margin-top: 6px; color: var(--muted); font-size: .55rem; }
.catalog-button { min-width: 70px; min-height: 45px; padding: 8px 9px; font-size: .63rem; font-weight: 800; }
.catalog-button:disabled { opacity: .38; cursor: default; }
.catalog-button.owned { border-color: transparent; color: var(--muted); }

.settings-sheet { grid-template-rows: auto minmax(0, 1fr); }
.settings-list { overflow-y: auto; padding: 6px 18px max(22px, env(safe-area-inset-bottom)); }
.setting-row { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 18px; padding: 19px 0; border-bottom: 1px solid var(--faint); }
.setting-row strong { display: block; font-size: .7rem; letter-spacing: .08em; }
.setting-row small { display: block; margin-top: 5px; color: var(--muted); font-size: .59rem; line-height: 1.35; }
.segmented { display: flex; }
.segmented button { min-width: 60px; min-height: 38px; padding: 8px; color: var(--muted); font-size: .59rem; }
.segmented button + button { border-left: 0; }
.segmented button.active { background: var(--button-bg); color: var(--button-ink); }
.segmented button:disabled { opacity: .3; }
.danger-button { width: 100%; margin-top: 24px; padding: 13px; color: var(--muted); font-size: .65rem; }
.danger-button.confirming { border-color: #b55f55; color: #c87065; }

.debug-panel { margin-top: 24px; padding: 14px; border: 1px dashed var(--line); }
.debug-panel > strong { display: block; margin-bottom: 11px; color: var(--muted); font-size: .62rem; }
.debug-panel > div { display: grid; grid-template-columns: 1fr 1fr; gap: 7px; }
.debug-panel button { min-height: 38px; font-size: .57rem; }

.toast {
  position: fixed;
  z-index: 30;
  left: 50%;
  bottom: calc(75px + env(safe-area-inset-bottom));
  max-width: min(90vw, 440px);
  padding: 10px 14px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--ink);
  box-shadow: 0 8px 26px var(--shadow);
  font-size: .68rem;
  line-height: 1.4;
  text-align: center;
  opacity: 0;
  translate: -50% 8px;
  pointer-events: none;
  transition: opacity 150ms ease, translate 150ms ease;
}
.toast.show { opacity: 1; translate: -50% 0; }

.discovery {
  position: fixed;
  z-index: 40;
  right: max(12px, env(safe-area-inset-right));
  bottom: calc(74px + env(safe-area-inset-bottom));
  width: min(420px, calc(100vw - 24px));
  pointer-events: none;
  animation: discovery-in 180ms ease-out both;
}
.discovery-card {
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr);
  grid-template-rows: auto auto auto;
  column-gap: 13px;
  padding: 12px;
  border: 1px solid var(--strong-line);
  background: var(--panel);
  box-shadow: 0 10px 34px var(--shadow);
  text-align: left;
}
.discovery-card > p:first-child { grid-column: 2; margin: 0 0 2px; color: var(--muted); font-size: .54rem; letter-spacing: .16em; }
.discovery-card pre { grid-column: 1; grid-row: 1 / 4; min-height: 64px; display: grid; place-content: center; margin: 0; border-right: 1px solid var(--faint); color: var(--ink); font: 500 .75rem/1.1 inherit; text-align: center; }
.discovery-card h2 { grid-column: 2; margin: 0; font-size: .77rem; letter-spacing: .02em; }
.discovery-card h2 + p { grid-column: 2; margin: 5px 0 0; color: var(--muted); font-size: .59rem; line-height: 1.35; }

@keyframes discovery-in {
  from { opacity: 0; translate: 0 10px; }
  to { opacity: 1; translate: 0 0; }
}

@media (max-width: 680px) {
  :root { --cell-size: 12px; --cell-line: 1.22; }
  .pan-hint { display: flex; }
  .interaction-bar { grid-template-columns: minmax(118px, auto) 1fr auto; }
  .interaction-bar p { padding: 0 7px; font-size: .55rem; }
  .shop-button { min-width: 69px; padding-inline: 9px; }
  .sheet { top: auto; width: 100%; height: min(88svh, 720px); border-top: 1px solid var(--line); border-left: 0; box-shadow: 0 -18px 55px var(--shadow); }
  .settings-sheet { height: min(82svh, 640px); }
  .discovery { right: auto; left: 50%; transform: translateX(-50%); }
}

@media (max-width: 440px) {
  .topbar { min-height: 52px; padding-top: max(8px, env(safe-area-inset-top)); padding-bottom: 8px; }
  .brand { gap: 7px; }
  .brand span { font-size: .58rem; }
  .brand strong { font-size: .67rem; letter-spacing: .05em; }
  .top-actions { gap: 7px; }
  .interaction-bar p { display: none; }
  .interaction-bar { grid-template-columns: 1fr auto; }
  .catalog { padding-inline: 8px; }
  .catalog-card { grid-template-columns: 72px minmax(0, 1fr) auto; gap: 8px; padding-inline: 6px; }
  .catalog-art { font-size: .61rem; }
  .catalog-button { min-width: 62px; padding-inline: 6px; }
  .setting-row { grid-template-columns: 1fr; gap: 11px; }
  .segmented button { flex: 1; }
}

@media (max-height: 540px) and (orientation: landscape) {
  :root { --cell-size: 11px; --cell-line: 1.12; }
  .topbar { min-height: 42px; padding-block: 5px; }
  .interaction-bar { min-height: 39px; }
  .quick-food { min-height: 51px; padding-block: 4px; }
  .quick-food button { min-height: 41px; }
  .pan-hint { display: none; }
  #tank { padding-block: 5px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; }
  .discovery { animation: none; }
}