:root {
  color-scheme: dark;
  --bg: #10140f;
  --bg-soft: #171d16;
  --panel: #20261f;
  --panel-2: #2a3129;
  --ink: #f3f7ed;
  --muted: #aab5a3;
  --line: #3f493c;
  --green: #9bf36f;
  --green-2: #58ce7d;
  --amber: #f2bf5d;
  --red: #ff6f61;
  --blue: #78d9ff;
  --shadow: rgba(0, 0, 0, 0.35);
  font-family: Inter, "Noto Sans JP", "Yu Gothic UI", "Meiryo", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
  background:
    radial-gradient(circle at 20% 0%, rgba(155, 243, 111, 0.12), transparent 26rem),
    linear-gradient(140deg, #10140f 0%, #151b17 48%, #211b18 100%);
  color: var(--ink);
  overscroll-behavior: none;
}

body {
  min-height: var(--app-height, 100dvh);
  overflow: hidden;
  -webkit-user-select: none;
  user-select: none;
}

button {
  font: inherit;
  color: inherit;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

.app-shell {
  width: 100%;
  height: var(--app-height, 100dvh);
  margin: 0;
  padding: 0;
  position: relative;
  overflow: hidden;
  background: #10140f;
}

.topbar {
  position: absolute;
  z-index: 4;
  top: 0;
  left: 0;
  right: 0;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  min-width: 0;
  padding:
    calc(10px + env(safe-area-inset-top))
    max(12px, env(safe-area-inset-right))
    10px
    max(12px, env(safe-area-inset-left));
  background: linear-gradient(180deg, rgba(16, 20, 15, 0.88), rgba(16, 20, 15, 0.45) 66%, transparent);
  pointer-events: none;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.brand-mark {
  width: 38px;
  height: 38px;
  flex: 0 0 auto;
  border: 2px solid var(--green);
  border-radius: 50%;
  position: relative;
  box-shadow: 0 0 26px rgba(155, 243, 111, 0.18), inset 0 0 18px rgba(155, 243, 111, 0.14);
}

.brand-mark::before,
.brand-mark::after {
  content: "";
  position: absolute;
  inset: 8px;
  border: 1px solid rgba(243, 247, 237, 0.55);
  border-radius: 50%;
}

.brand-mark::after {
  inset: 15px;
  background: var(--green);
  border: 0;
  box-shadow: 0 0 16px var(--green);
}

h1,
p {
  margin: 0;
}

h1 {
  font-size: 1.32rem;
  line-height: 1;
  letter-spacing: 0;
  white-space: nowrap;
}

.brand p {
  margin-top: 3px;
  color: var(--muted);
  font-size: 0.74rem;
}

.top-metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(64px, 1fr));
  gap: 6px;
  width: min(100%, 500px);
  justify-self: end;
}

.top-metrics div {
  min-height: 42px;
  padding: 6px 9px;
  background: rgba(32, 38, 31, 0.66);
  border: 1px solid rgba(170, 181, 163, 0.18);
  border-radius: 8px;
  backdrop-filter: blur(8px);
}

.top-metrics span {
  display: block;
  color: var(--muted);
  font-size: 0.66rem;
}

.top-metrics strong {
  display: block;
  margin-top: 2px;
  font-size: 1rem;
  white-space: nowrap;
}

.playfield-band {
  position: absolute;
  inset: 0;
  min-height: 100%;
  display: block;
  overflow: hidden;
}

.canvas-shell {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  max-width: none;
  min-width: 0;
  border: 0;
  border-radius: 0;
  background: #11150f;
  box-shadow: none;
  overflow: hidden;
}

#gameCanvas {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: none;
}

.canvas-hud {
  position: absolute;
  top: calc(72px + env(safe-area-inset-top));
  left: max(12px, env(safe-area-inset-left));
  right: max(12px, env(safe-area-inset-right));
  display: flex;
  justify-content: space-between;
  gap: 10px;
  pointer-events: none;
}

.canvas-hud span {
  padding: 5px 8px;
  color: var(--muted);
  background: rgba(16, 20, 15, 0.72);
  border: 1px solid rgba(170, 181, 163, 0.16);
  border-radius: 999px;
  font-size: 0.78rem;
}

.end-overlay {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 20px;
  background: rgba(16, 20, 15, 0.66);
  backdrop-filter: blur(4px);
}

.end-overlay.hidden,
.hidden {
  display: none !important;
}

.end-panel {
  width: min(100%, 300px);
  padding: 18px;
  border: 1px solid rgba(255, 111, 97, 0.45);
  border-radius: 8px;
  background: rgba(32, 38, 31, 0.96);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.36);
  text-align: center;
}

.overline {
  color: var(--red);
  font-size: 0.72rem;
  text-transform: uppercase;
}

.end-panel strong {
  display: block;
  margin-top: 6px;
  font-size: 2rem;
}

.end-panel p {
  margin: 6px 0 14px;
  color: var(--muted);
}

.control-band {
  position: absolute;
  z-index: 5;
  left: 0;
  right: 0;
  bottom: 0;
  display: grid;
  gap: 6px;
  min-height: 0;
  padding:
    48px
    max(10px, env(safe-area-inset-right))
    calc(9px + env(safe-area-inset-bottom))
    max(10px, env(safe-area-inset-left));
  background: linear-gradient(0deg, rgba(16, 20, 15, 0.88), rgba(16, 20, 15, 0.5) 60%, transparent);
}

.control-row {
  display: flex;
  align-items: center;
  gap: 6px;
  width: min(100%, 900px);
  margin: 0 auto;
}

.tool-button,
.segment,
.primary-button,
.upgrade-button {
  border: 1px solid rgba(170, 181, 163, 0.22);
  border-radius: 8px;
  background: var(--panel);
  min-height: 42px;
  cursor: pointer;
  transition: transform 140ms ease, border-color 140ms ease, background 140ms ease, opacity 140ms ease;
}

.tool-button {
  width: 42px;
  display: grid;
  place-items: center;
  font-weight: 800;
}

.tool-button:hover,
.segment:hover,
.primary-button:hover,
.upgrade-button:hover {
  transform: translateY(-1px);
  border-color: rgba(155, 243, 111, 0.5);
}

.segmented {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px;
  margin-left: auto;
  min-width: min(100%, 210px);
  padding: 3px;
  border: 1px solid rgba(170, 181, 163, 0.16);
  border-radius: 8px;
  background: rgba(16, 20, 15, 0.55);
}

.segment {
  min-height: 34px;
  color: var(--muted);
  background: transparent;
}

.segment.active {
  color: var(--ink);
  background: var(--panel-2);
  border-color: rgba(155, 243, 111, 0.42);
}

.upgrade-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 6px;
  width: min(100%, 900px);
  margin: 0 auto;
  min-height: 0;
}

.upgrade-button {
  position: relative;
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-rows: auto auto;
  align-items: center;
  gap: 3px 8px;
  min-height: 58px;
  padding: 8px;
  text-align: left;
  background: rgba(32, 38, 31, 0.82);
  backdrop-filter: blur(8px);
}

.upgrade-button strong {
  min-width: 0;
  font-size: 0.9rem;
  line-height: 1.1;
}

.upgrade-button small {
  grid-column: 1 / -1;
  color: var(--muted);
  font-size: 0.68rem;
  line-height: 1.2;
}

.upgrade-level {
  color: var(--green);
  font-size: 0.85rem;
  font-weight: 800;
}

.upgrade-cost {
  color: var(--amber);
  font-size: 0.78rem;
}

.upgrade-button:disabled {
  cursor: default;
  opacity: 0.46;
  transform: none;
}

.primary-button {
  width: 100%;
  color: #10140f;
  background: linear-gradient(180deg, var(--green), var(--green-2));
  border-color: transparent;
  font-weight: 800;
}

@media (max-width: 820px) {
  .topbar {
    align-items: center;
    gap: 8px;
    padding:
      calc(8px + env(safe-area-inset-top))
      max(8px, env(safe-area-inset-right))
      8px
      max(8px, env(safe-area-inset-left));
  }

  .top-metrics {
    width: min(100%, 390px);
    grid-template-columns: repeat(4, minmax(58px, 1fr));
  }

  .upgrade-grid {
    grid-auto-flow: column;
    grid-auto-columns: minmax(142px, 1fr);
    grid-template-columns: none;
    overflow-x: auto;
    overscroll-behavior-x: contain;
    scroll-snap-type: x proximity;
    scrollbar-width: none;
    padding-bottom: 2px;
  }

  .upgrade-grid::-webkit-scrollbar {
    display: none;
  }

  .upgrade-button {
    scroll-snap-align: start;
    min-height: 58px;
    padding: 8px;
  }

  .upgrade-button small {
    display: none;
  }
}

@media (max-width: 460px) {
  .app-shell {
    padding: 0;
  }

  .brand {
    gap: 8px;
  }

  .brand-mark {
    width: 30px;
    height: 30px;
  }

  .brand-mark::before {
    inset: 6px;
  }

  .brand-mark::after {
    inset: 12px;
  }

  h1 {
    font-size: 1.12rem;
  }

  .brand p {
    display: none;
  }

  .top-metrics {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 4px;
  }

  .top-metrics div {
    min-height: 32px;
    padding: 4px 5px;
  }

  .top-metrics span {
    font-size: 0.56rem;
  }

  .top-metrics strong {
    font-size: 0.84rem;
  }

  .canvas-hud {
    top: calc(50px + env(safe-area-inset-top));
    left: max(8px, env(safe-area-inset-left));
    right: max(8px, env(safe-area-inset-right));
  }

  .canvas-hud span {
    padding: 4px 7px;
    font-size: 0.7rem;
  }

  .control-band {
    gap: 5px;
    padding:
      32px
      max(7px, env(safe-area-inset-right))
      calc(7px + env(safe-area-inset-bottom))
      max(7px, env(safe-area-inset-left));
  }

  .control-row {
    flex-wrap: nowrap;
    gap: 5px;
  }

  .tool-button {
    width: 38px;
    min-height: 34px;
  }

  .segmented {
    width: auto;
    min-width: 0;
    flex: 1 1 auto;
    margin-left: 0;
    padding: 3px;
  }

  .segment {
    min-height: 30px;
  }

  .upgrade-grid {
    grid-auto-columns: minmax(112px, 34vw);
    gap: 5px;
  }

  .upgrade-button {
    min-height: 48px;
    padding: 7px;
  }

  .upgrade-button strong {
    font-size: 0.82rem;
  }

  .upgrade-button small {
    display: none;
  }

  .upgrade-level,
  .upgrade-cost {
    font-size: 0.7rem;
  }
}

@media (max-height: 620px) and (orientation: portrait) {
  .brand p {
    display: none;
  }

  .top-metrics div {
    min-height: 32px;
  }
}

@media (max-width: 380px) {
  .topbar {
    gap: 6px;
  }

  .brand {
    gap: 6px;
  }

  .brand-mark {
    display: none;
  }

  h1 {
    font-size: 1rem;
  }

  .top-metrics span {
    font-size: 0.5rem;
  }

  .top-metrics strong {
    font-size: 0.78rem;
  }
}