:root {
  --bg: #f4f4f4;
  --panel: #ffffff;
  --text: #1f1f1f;
  --muted: #666;
  --accent: #1e8a4f;
  --danger: #b5261e;
  --border: #d4d4d4;
  --gradient-start: #d3fbfb;
  --gradient-end: #fbdd97;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

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

html {
  margin: 0;
  padding: 0;
  background-color: var(--gradient-start);
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color: var(--text);
  background: transparent;
  padding-top: env(safe-area-inset-top);
  padding-right: env(safe-area-inset-right);
  padding-bottom: env(safe-area-inset-bottom);
  padding-left: env(safe-area-inset-left);
  position: fixed;
  inset: 0;
  overflow: hidden;
  -webkit-overflow-scrolling: auto;
  -webkit-tap-highlight-color: transparent;
  -webkit-touch-callout: none;
  overscroll-behavior: none;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
}

body.modal-open::before {
  filter: brightness(0.93);
}

.app {
  max-width: 520px;
  margin: 0 auto;
  padding: 1rem;
  padding-right: max(1rem, env(safe-area-inset-right));
  padding-left: max(1rem, env(safe-area-inset-left));
  min-height: calc(100svh - env(safe-area-inset-top) - env(safe-area-inset-bottom));
  min-height: calc(100dvh - env(safe-area-inset-top) - env(safe-area-inset-bottom));
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.hud {
  display: grid;
  gap: 0.35rem;
  padding: 0.1rem 0;
}

.hud-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  min-height: 2rem;
}

.brand-logo {
  width: 1.55rem;
  height: 1.55rem;
  border-radius: 6px;
  object-fit: cover;
  display: block;
  flex: 0 0 auto;
}

.brand h1 {
  margin: 0;
  font-size: 1.25rem;
  line-height: 1;
}

.icon-button {
  width: 2rem;
  height: 2rem;
  min-width: 2rem;
  min-height: 2rem;
  border-radius: 50% !important;
  padding: 0;
  font-size: 1rem;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  -webkit-appearance: none;
  appearance: none;
}

#info-button {
  position: static;
  margin: 0;
  align-self: center;
}

.stats {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 0.9rem;
  font-size: 1rem;
  width: 100%;
  flex-wrap: wrap;
}

.score-row {
  font-size: 1rem;
}

.score-row strong {
  font-size: 1.1em;
}

.score-row.highlight {
  font-size: 1.25rem;
  font-weight: 600;
}

#current-score-row.hidden {
  display: none;
}

#status {
  color: var(--muted);
}

#status.game-over {
  color: var(--danger);
  font-weight: 600;
}

#status.paused {
  color: var(--muted);
}

.board-wrap {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 0;
}

.game-over-modal,
.controls-popover,
.leaderboard-modal {
  margin: 0;
  position: fixed;
  inset: 50% auto auto 50%;
  transform: translate(-50%, -50%);
  z-index: 1100;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: #ffffff;
  width: min(92vw, 420px);
  max-width: min(92vw, 420px);
  max-height: min(84dvh, 720px);
  padding: 0.9rem;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 0.45rem;
  overflow: auto;
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.34);
  z-index: 1000;
}

.modal-header {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  min-height: 2rem;
}

.modal-title {
  margin: 0;
  font-size: 1.1rem;
  padding-right: 2.4rem;
}

.modal-close {
  position: absolute;
  top: 0;
  right: 0;
  width: 2rem;
  height: 2rem;
  padding: 0;
  border-radius: 50% !important;
  aspect-ratio: 1 / 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.55rem;
  line-height: 1;
}

#game-over-title {
  color: var(--danger);
}

.game-over-modal p {
  margin: 0;
}

.game-over-message {
  color: var(--muted);
}

#leaderboard-button,
#pause-button {
  width: min(100%, 152px);
  min-height: 2.8rem;
  padding: 0.6rem 0.7rem;
  font-size: 0.95rem;
  border-radius: 6px;
}

#player-name-label {
  font-size: 0.95rem;
  font-weight: 600;
}

#player-name-input {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.72rem 0.75rem;
  font-size: 1rem;
  min-height: 2.7rem;
  background: #fff;
  color: var(--text);
}

#player-name-input:focus-visible {
  outline: 2px solid color-mix(in srgb, var(--accent), white 45%);
  outline-offset: 2px;
}

.recent-scores {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.6rem;
  display: grid;
  gap: 0.45rem;
}

#recent-scores-title {
  margin: 0;
  font-size: 0.95rem;
}

.recent-scores-chart {
  height: 72px;
  border-radius: 8px;
  background: #f7f7f7;
  border: 1px solid #ececec;
  padding: 0.3rem;
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(3px, 1fr);
  align-items: end;
  gap: 2px;
  overflow-x: auto;
}

.recent-score-bar {
  display: block;
  border-radius: 2px;
  background: linear-gradient(180deg, #2aa05f 0%, #197543 100%);
  min-height: 2px;
}

.leaderboard-list {
  margin: 0;
  padding-left: 1.2rem;
  display: grid;
  gap: 0.35rem;
}

.leaderboard-list li {
  display: flex;
  justify-content: space-between;
  gap: 0.6rem;
}

#game {
  width: 100%;
  max-width: 480px;
  aspect-ratio: 1 / 1;
  height: auto;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  display: block;
  touch-action: none;
}

.controls-popover {
  color: var(--text);
}

.controls-popover button:not(.modal-close) {
  align-self: stretch;
  min-height: 2.5rem;
}

.settings-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 0.5rem 0 0.75rem;
  gap: 0.75rem;
}

.settings-row label {
  font-size: 0.95rem;
}

.toggle-switch {
  appearance: none;
  width: 46px;
  height: 26px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: #dcdcdc;
  position: relative;
  cursor: pointer;
  transition: background 0.2s ease;
}

.toggle-switch::after {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: 20px;
  height: 20px;
  border-radius: 999px;
  background: #fff;
  transition: transform 0.2s ease;
}

.toggle-switch:checked {
  background: var(--accent);
}

.toggle-switch:checked::after {
  transform: translateX(20px);
}

.pause-bar {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.55rem;
  flex-wrap: wrap;
}

#pause-button {
  min-width: 0;
}

.dpad {
  --dpad-gap: 0.4rem;
  --dpad-button-size: 52px;
  width: calc((var(--dpad-button-size) * 3) + (var(--dpad-gap) * 2));
  height: calc((var(--dpad-button-size) * 3) + (var(--dpad-gap) * 2));
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, var(--dpad-button-size));
  grid-template-rows: repeat(3, var(--dpad-button-size));
  gap: var(--dpad-gap);
}

.dpad button {
  width: var(--dpad-button-size);
  height: var(--dpad-button-size);
  min-height: 0;
  padding: 0;
  font-size: 1.35rem;
  line-height: 1;
}

.dpad-up {
  grid-column: 2;
  grid-row: 1;
}

.dpad-left {
  grid-column: 1;
  grid-row: 2;
}

.dpad-right {
  grid-column: 3;
  grid-row: 2;
}

.dpad-down {
  grid-column: 2;
  grid-row: 3;
}

button {
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #fff;
  color: var(--text);
  padding: 0.6rem 0.7rem;
  font-size: 0.95rem;
}

button:active {
  background: #ececec;
}

.help {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

@media (orientation: landscape) and (max-height: 560px) {
  body {
    position: static;
    overflow-y: auto;
    overflow-x: hidden;
  }

  .app {
    max-width: 100%;
    width: 100%;
    min-height: calc(100dvh + 96px);
    display: grid;
    grid-template-columns: minmax(160px, 24vw) minmax(0, 1fr) minmax(120px, 20vw);
    grid-template-rows: auto 1fr;
    gap: 0.6rem;
    align-items: start;
    padding-top: 0.6rem;
    padding-bottom: calc(1rem + env(safe-area-inset-bottom));
  }

  .hud {
    grid-column: 1;
    grid-row: 1 / span 2;
    position: sticky;
    top: 0;
  }

  .stats {
    justify-content: flex-start;
    align-items: flex-start;
    flex-direction: column;
    gap: 0.4rem;
  }

  .board-wrap {
    grid-column: 2;
    grid-row: 1 / span 2;
    align-items: flex-start;
    justify-content: center;
  }

  #game {
    height: min(
      calc(100dvh - env(safe-area-inset-top) - env(safe-area-inset-bottom) - 1.25rem),
      calc(100vw - 320px)
    );
    width: auto;
    max-width: none;
    max-height: none;
  }

  .pause-bar {
    grid-column: 3;
    grid-row: 1;
    justify-content: flex-start;
    align-items: flex-start;
    flex-direction: column;
    gap: 0.45rem;
  }

  .dpad {
    grid-column: 3;
    grid-row: 2;
    margin: 0;
    align-self: start;
  }
}

@media (orientation: landscape) and (pointer: coarse) {
  html,
  body {
    overflow: hidden;
    height: 100dvh;
  }

  body {
    position: fixed;
    inset: 0;
    padding: 0;
  }

  .app {
    --hud-col: clamp(152px, 20vw, 198px);
    --controls-col: clamp(184px, 22vw, 240px);
    --layout-gap: clamp(0.85rem, 1.8vw, 1.2rem);
    --pad-inline-start: max(1rem, env(safe-area-inset-left));
    --pad-inline-end: max(1rem, env(safe-area-inset-right));
    --pad-block-start: max(0.6rem, env(safe-area-inset-top));
    --pad-block-end: calc(1rem + env(safe-area-inset-bottom));
    max-width: 100%;
    width: 100%;
    min-height: calc(100dvh - env(safe-area-inset-top) - env(safe-area-inset-bottom));
    display: grid;
    grid-template-columns: var(--hud-col) minmax(0, 1fr) var(--controls-col);
    grid-template-rows: auto 1fr;
    column-gap: var(--layout-gap);
    row-gap: 0.6rem;
    align-items: start;
    padding-top: var(--pad-block-start);
    padding-right: var(--pad-inline-end);
    padding-bottom: var(--pad-block-end);
    padding-left: var(--pad-inline-start);
  }

  .hud {
    grid-column: 1;
    grid-row: 1 / span 2;
    position: sticky;
    top: env(safe-area-inset-top);
  }

  .stats {
    justify-content: flex-start;
    align-items: flex-start;
    flex-direction: column;
    gap: 0.4rem;
  }

  .board-wrap {
    grid-column: 2;
    grid-row: 1 / span 2;
    align-items: flex-start;
    justify-content: center;
  }

  #game {
    width: auto;
    height: min(
      calc(100dvh - env(safe-area-inset-top) - env(safe-area-inset-bottom) - 1.25rem),
      calc(
        100vw - var(--hud-col) - var(--controls-col) - (var(--layout-gap) * 2) - var(--pad-inline-start) -
          var(--pad-inline-end)
      )
    );
    max-width: none;
    max-height: none;
  }

  .pause-bar {
    grid-column: 3;
    grid-row: 1;
    justify-content: center;
    align-self: start;
    flex-direction: column;
    gap: 0.45rem;
  }

  .dpad {
    grid-column: 3;
    grid-row: 2;
    --dpad-button-size: clamp(40px, 7.5vh, 56px);
    margin: 0;
    align-self: center;
    justify-self: center;
  }

  #info-button {
    position: fixed;
    left: calc(env(safe-area-inset-left) + 0.75rem);
    bottom: calc(env(safe-area-inset-bottom) + 0.75rem);
    z-index: 950;
  }
}

@media (min-width: 721px) {
  .controls-popover {
    min-width: 320px;
  }
}