:root {
  color-scheme: dark;
  --bg: #020908;
  --ink: #f2f5ef;
  --muted: #7ea398;
  --green: #10a77f;
  --cyan: #12d8d0;
  --line: rgba(18, 216, 208, 0.28);
  --panel: rgba(2, 9, 8, 0.92);
  font-family: Inter, "Noto Sans SC", "PingFang SC", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

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

body {
  color: var(--ink);
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

button,
kbd {
  font: inherit;
}

button {
  color: inherit;
}

[hidden] {
  display: none !important;
}

.game-shell {
  position: relative;
  width: 100%;
  height: 100dvh;
  min-height: 420px;
  overflow: hidden;
  isolation: isolate;
  background: var(--bg);
}

#gameCanvas {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  image-rendering: pixelated;
  touch-action: none;
}

.scanlines {
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  opacity: 0.12;
  background: repeating-linear-gradient(0deg, transparent 0 3px, rgba(173, 255, 237, 0.1) 3px 4px);
  mix-blend-mode: overlay;
}

.hud {
  position: absolute;
  top: max(16px, env(safe-area-inset-top));
  right: max(18px, env(safe-area-inset-right));
  left: max(18px, env(safe-area-inset-left));
  z-index: 5;
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 22px;
  pointer-events: none;
}

.hud::after {
  position: absolute;
  top: calc(100% + 12px);
  right: 0;
  left: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--cyan), var(--line) 24%, transparent 78%);
  content: "";
}

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

.hud__signal {
  width: 5px;
  height: 36px;
  flex: none;
  background: var(--cyan);
  box-shadow: 0 0 18px rgba(18, 216, 208, 0.72);
  animation: signal 1.8s steps(2, end) infinite;
}

.hud strong,
.hud small {
  display: block;
}

.hud strong {
  overflow: hidden;
  font-size: clamp(0.88rem, 1.6vw, 1.18rem);
  font-weight: 640;
  letter-spacing: 0.18em;
  white-space: nowrap;
}

.hud small {
  margin-top: 0.22rem;
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 0.58rem;
  letter-spacing: 0.16em;
}

.hud__metrics {
  display: flex;
  align-items: center;
  gap: 18px;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
}

.hud__metrics > span {
  display: flex;
  align-items: center;
  gap: 7px;
}

.hud__metrics b {
  min-width: 2.4em;
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.12em;
}

.hud__health i {
  color: #78f6dc;
  font-style: normal;
  text-shadow: 0 0 12px rgba(18, 216, 208, 0.8);
}

.hud-icon {
  width: 24px;
  height: 24px;
  background-image: url("./assets/archive-ui-v2.png");
  background-repeat: no-repeat;
  background-size: 400% 400%;
  image-rendering: pixelated;
}

.hud-icon--gem {
  background-position: 0 0;
}

.hud-icon--fragment {
  background-position: 33.333% 0;
}

.hud__menu,
.runner-layer__back {
  border: 1px solid var(--line);
  border-radius: 0;
  background: rgba(2, 9, 8, 0.72);
  color: var(--ink);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  cursor: pointer;
  pointer-events: auto;
}

.hud__menu {
  padding: 10px 14px;
}

.hud__menu:hover,
.hud__menu:focus-visible,
.runner-layer__back:hover,
.runner-layer__back:focus-visible {
  border-color: var(--cyan);
  outline: none;
  background: var(--cyan);
  color: var(--bg);
}

.loading-screen,
.mode-menu {
  position: absolute;
  inset: 0;
  z-index: 8;
}

.loading-screen {
  display: grid;
  place-content: center;
  justify-items: center;
  gap: 22px;
  background: #020908;
  transition: opacity 500ms ease;
}

.loading-screen__glyph {
  width: 74px;
  height: 74px;
  background: url("./assets/archive-ui-v2.png") 66.666% 0 / 400% 400% no-repeat;
  image-rendering: pixelated;
  animation: loading-glyph 1.4s steps(4, end) infinite;
}

.loading-screen p {
  margin: 0;
  font-size: 0.68rem;
  letter-spacing: 0.32em;
}

.loading-screen__line {
  width: min(280px, 62vw);
  height: 1px;
  overflow: hidden;
  background: rgba(18, 216, 208, 0.14);
}

.loading-screen__line i {
  display: block;
  width: 36%;
  height: 100%;
  background: var(--cyan);
  box-shadow: 0 0 14px var(--cyan);
  animation: loading-line 1.1s ease-in-out infinite;
}

.mode-menu {
  display: grid;
  grid-template-columns: minmax(240px, 0.72fr) minmax(540px, 1.35fr);
  align-items: center;
  gap: clamp(40px, 7vw, 120px);
  padding: max(74px, 8vh) clamp(24px, 7vw, 120px);
  overflow: auto;
  background:
    linear-gradient(90deg, rgba(2, 9, 8, 0.98) 0 34%, rgba(2, 9, 8, 0.76) 62%, rgba(2, 9, 8, 0.9)),
    url("./assets/background-far-v2.png") center / cover;
}

.mode-menu__intro h1 {
  max-width: 7em;
  margin: 0;
  font-size: clamp(2.4rem, 5.5vw, 6.1rem);
  font-weight: 360;
  line-height: 1.04;
  letter-spacing: 0.08em;
}

.mode-menu__intro p {
  margin: 26px 0 0;
  color: var(--muted);
  font-size: 0.86rem;
  letter-spacing: 0.14em;
}

.mode-list {
  border-top: 1px solid var(--line);
}

.mode-option {
  position: relative;
  display: grid;
  grid-template-columns: 48px 1fr auto;
  align-items: center;
  gap: 20px;
  width: 100%;
  padding: clamp(19px, 3vh, 30px) 18px;
  border: 0;
  border-bottom: 1px solid var(--line);
  background: rgba(2, 9, 8, 0.26);
  text-align: left;
  cursor: pointer;
  transition: background 180ms ease, padding 240ms ease;
}

.mode-option::before {
  position: absolute;
  inset: 0 auto 0 0;
  width: 0;
  background: var(--cyan);
  content: "";
  transition: width 180ms ease;
}

.mode-option:hover,
.mode-option:focus-visible {
  padding-left: 28px;
  outline: none;
  background: rgba(10, 82, 66, 0.46);
}

.mode-option:hover::before,
.mode-option:focus-visible::before {
  width: 4px;
}

.mode-option__number,
.mode-option__action {
  color: var(--cyan);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 0.65rem;
  letter-spacing: 0.15em;
}

.mode-option__copy strong,
.mode-option__copy small {
  display: block;
}

.mode-option__copy strong {
  font-size: clamp(1rem, 1.7vw, 1.42rem);
  font-weight: 520;
  letter-spacing: 0.13em;
}

.mode-option__copy small {
  margin-top: 7px;
  color: var(--muted);
  font-size: 0.72rem;
  line-height: 1.65;
}

.mode-option__action {
  white-space: nowrap;
}

.mode-menu__controls {
  position: absolute;
  right: clamp(24px, 7vw, 120px);
  bottom: max(22px, env(safe-area-inset-bottom));
  margin: 0;
  color: rgba(126, 163, 152, 0.66);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 0.58rem;
  letter-spacing: 0.13em;
}

.runner-layer {
  position: absolute;
  inset: 0;
  z-index: 10;
  background: var(--bg);
}

.runner-layer iframe {
  display: block;
  width: 100%;
  height: 100%;
  border: 0;
}

.runner-layer__back {
  position: absolute;
  top: max(14px, env(safe-area-inset-top));
  left: max(16px, env(safe-area-inset-left));
  z-index: 2;
  padding: 10px 14px;
}

.interaction-prompt {
  position: absolute;
  bottom: max(92px, calc(env(safe-area-inset-bottom) + 68px));
  left: 50%;
  z-index: 6;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 15px;
  border: 1px solid var(--line);
  background: rgba(2, 9, 8, 0.88);
  transform: translateX(-50%);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
}

.quest-tracker {
  position: absolute;
  bottom: max(26px, env(safe-area-inset-bottom));
  left: max(20px, env(safe-area-inset-left));
  z-index: 6;
  width: min(330px, calc(100vw - 40px));
  padding: 15px 18px 16px;
  border-left: 2px solid var(--cyan);
  background: linear-gradient(90deg, rgba(2, 9, 8, 0.94), rgba(2, 30, 24, 0.58));
  box-shadow: 8px 0 0 rgba(18, 216, 208, 0.06);
  pointer-events: none;
}

.quest-tracker span,
.quest-tracker strong,
.quest-tracker small {
  display: block;
}

.quest-tracker span {
  color: var(--cyan);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 0.5rem;
  letter-spacing: 0.22em;
}

.quest-tracker strong {
  margin-top: 6px;
  font-size: 0.88rem;
  font-weight: 580;
  letter-spacing: 0.08em;
}

.quest-tracker small {
  margin-top: 5px;
  color: var(--muted);
  font-size: 0.62rem;
  line-height: 1.5;
}

.quest-tracker__bar {
  height: 2px;
  margin-top: 12px;
  overflow: hidden;
  background: rgba(18, 216, 208, 0.14);
}

.quest-tracker__bar i {
  display: block;
  width: 0;
  height: 100%;
  background: var(--cyan);
  box-shadow: 0 0 10px var(--cyan);
  transition: width 240ms ease;
}

.interaction-prompt kbd {
  display: grid;
  width: 25px;
  height: 25px;
  place-items: center;
  border: 1px solid var(--cyan);
  background: rgba(18, 216, 208, 0.12);
  color: var(--cyan);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
}

.toast {
  position: absolute;
  right: max(20px, env(safe-area-inset-right));
  bottom: max(28px, env(safe-area-inset-bottom));
  z-index: 7;
  width: min(360px, calc(100vw - 40px));
  padding: 18px 20px 18px 24px;
  border-top: 1px solid var(--cyan);
  border-bottom: 1px solid rgba(18, 216, 208, 0.18);
  background: linear-gradient(90deg, rgba(2, 9, 8, 0.98), rgba(4, 63, 44, 0.74));
  box-shadow: -8px 0 0 rgba(18, 216, 208, 0.12);
  animation: toast-in 320ms cubic-bezier(0.16, 1, 0.3, 1);
}

.toast span,
.toast strong,
.toast small {
  display: block;
}

.toast span {
  color: var(--cyan);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 0.52rem;
  letter-spacing: 0.22em;
}

.toast strong {
  margin-top: 8px;
  font-size: 1.05rem;
  font-weight: 560;
  letter-spacing: 0.08em;
}

.toast small {
  margin-top: 7px;
  color: var(--muted);
  font-size: 0.68rem;
  line-height: 1.6;
}

.archive-dialog {
  width: min(680px, calc(100vw - 32px));
  max-height: min(720px, calc(100dvh - 36px));
  padding: clamp(26px, 5vw, 52px);
  overflow: auto;
  border: 1px solid rgba(18, 216, 208, 0.5);
  border-radius: 0;
  background:
    linear-gradient(135deg, rgba(4, 63, 44, 0.24), transparent 42%),
    #020908;
  color: var(--ink);
  box-shadow: 12px 12px 0 rgba(18, 216, 208, 0.1), 0 28px 90px rgba(0, 0, 0, 0.72);
}

.archive-dialog::backdrop {
  background: rgba(0, 5, 4, 0.76);
  backdrop-filter: blur(7px);
}

.archive-dialog__close {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 34px;
  height: 34px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--muted);
  font-size: 1.2rem;
  cursor: pointer;
}

.archive-dialog__index {
  margin: 0;
  color: var(--cyan);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 0.58rem;
  letter-spacing: 0.25em;
}

.archive-dialog h2 {
  margin: 20px 0 0;
  font-size: clamp(1.65rem, 4vw, 3rem);
  font-weight: 380;
  letter-spacing: 0.08em;
}

.archive-dialog__lead {
  margin: 18px 0 0;
  color: #a9c2bb;
  font-size: 0.82rem;
  line-height: 1.8;
  white-space: pre-line;
}

.archive-dialog__answers,
.archive-dialog__links {
  display: grid;
  gap: 10px;
  margin-top: 26px;
}

.archive-answer,
.archive-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  width: 100%;
  padding: 14px 16px;
  border: 1px solid rgba(126, 163, 152, 0.28);
  border-radius: 0;
  background: rgba(4, 63, 44, 0.14);
  color: var(--ink);
  text-align: left;
  text-decoration: none;
  cursor: pointer;
}

.archive-answer:hover,
.archive-answer:focus-visible,
.archive-link:hover,
.archive-link:focus-visible {
  border-color: var(--cyan);
  outline: none;
  background: rgba(18, 216, 208, 0.12);
}

.archive-answer.is-correct {
  border-color: var(--cyan);
  background: rgba(18, 216, 208, 0.2);
}

.archive-answer.is-wrong {
  border-color: #9a5260;
  color: #b98a94;
}

.archive-link span {
  color: var(--muted);
  font-size: 0.68rem;
}

.touch-controls {
  position: absolute;
  right: max(16px, env(safe-area-inset-right));
  bottom: max(16px, env(safe-area-inset-bottom));
  left: max(16px, env(safe-area-inset-left));
  z-index: 7;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  pointer-events: none;
}

.touch-controls__move {
  display: flex;
  gap: 10px;
}

.touch-controls button {
  display: grid;
  width: 58px;
  height: 58px;
  place-items: center;
  border: 1px solid rgba(18, 216, 208, 0.42);
  border-radius: 0;
  background: rgba(2, 9, 8, 0.68);
  color: var(--cyan);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 1rem;
  pointer-events: auto;
  touch-action: none;
}

.touch-controls__jump {
  margin-left: auto;
}

.touch-controls__dash,
.touch-controls__interact {
  margin-left: 10px;
}

.touch-controls button.is-pressed {
  background: var(--cyan);
  color: var(--bg);
}

.screen-flash {
  position: absolute;
  inset: 0;
  z-index: 4;
  pointer-events: none;
  opacity: 0;
  background: var(--cyan);
}

.screen-flash.is-active {
  animation: flash 360ms steps(2, end);
}

@keyframes signal {
  50% { opacity: 0.4; }
}

@keyframes loading-glyph {
  50% { filter: brightness(1.6); transform: rotate(2deg); }
}

@keyframes loading-line {
  from { transform: translateX(-110%); }
  to { transform: translateX(310%); }
}

@keyframes toast-in {
  from { opacity: 0; transform: translateX(28px); }
}

@keyframes flash {
  0%, 100% { opacity: 0; }
  30% { opacity: 0.22; }
}

@media (pointer: coarse), (max-width: 760px) {
  .touch-controls:not([hidden]) {
    display: flex;
  }

  .hud {
    grid-template-columns: 1fr auto;
  }

  .hud__metrics {
    gap: 10px;
  }

  .hud__menu {
    position: absolute;
    top: 54px;
    right: 0;
  }
}

@media (max-width: 820px) {
  .mode-menu {
    display: block;
    padding: max(70px, 8vh) 20px 90px;
    background:
      linear-gradient(180deg, rgba(2, 9, 8, 0.74), rgba(2, 9, 8, 0.98) 45%),
      url("./assets/background-far-v2.png") center / cover;
  }

  .mode-menu__intro h1 {
    max-width: none;
    font-size: clamp(2.2rem, 11vw, 4.6rem);
  }

  .mode-menu__intro p {
    margin: 12px 0 34px;
  }

  .mode-option {
    grid-template-columns: 34px 1fr;
    gap: 12px;
    padding: 18px 8px;
  }

  .mode-option__action {
    display: none;
  }

  .mode-menu__controls {
    right: 20px;
    left: 20px;
    text-align: center;
  }

  .toast {
    right: 16px;
    bottom: 168px;
  }

  .quest-tracker {
    right: 16px;
    bottom: 88px;
    left: 16px;
    width: auto;
    padding-block: 10px;
  }

  .quest-tracker small {
    display: none;
  }
}

@media (max-height: 620px) and (orientation: landscape) {
  .mode-menu {
    grid-template-columns: 0.65fr 1.35fr;
    gap: 30px;
    padding: 55px 34px 42px;
  }

  .mode-option {
    padding-block: 12px;
  }

  .mode-option__copy small,
  .mode-menu__controls {
    display: none;
  }

  .touch-controls button {
    width: 48px;
    height: 48px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 1ms !important;
  }
}