:root {
  --bg: #0f1115;
  --panel: #171a20;
  --panel-alt: #12151b;
  --line: #21252d;
  --line-soft: #2b303b;
  --text: #dde2ea;
  --text-dim: #8b93a2;
  --warn: #b5bcc9;
  --fade: 500ms;
  --radius: 14px;
}

* {
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

html,
body {
  margin: 0;
  padding: 0;
  width: 100%;
  min-height: 100%;
  background: #0b0d11;
  color: var(--text);
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  user-select: none;
}

body {
  display: flex;
  justify-content: stretch;
}

.app {
  width: 100%;
  min-height: 100dvh;
  padding: 0;
}

.screen {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 100dvh;
  overflow: hidden;
  padding: max(8px, env(safe-area-inset-top)) 8px max(8px, env(safe-area-inset-bottom)) 8px;
}

.screen.transition {
  animation: fadeSlide var(--fade) cubic-bezier(0.18, 0.7, 0.2, 1);
}

@keyframes fadeSlide {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.main-shell {
  display: flex;
  justify-content: flex-end;
  align-items: flex-start;
  min-height: 92px;
  color: var(--text-dim);
  width: 100%;
  padding: 4px 4px 0;
}

.menu-right {
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding-top: 4px;
}

.main-panel {
  flex: 1;
  border: 1px solid #1f232b;
  border-radius: 2px;
  background: linear-gradient(180deg, #1f2229 0%, #1b1f26 100%);
  padding: 8px 8px 12px;
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.promo-tile {
  display: grid;
  justify-items: center;
  width: 70px;
  gap: 0;
}

.promo-icon {
  width: 64px;
  height: 64px;
  border-radius: 12px;
  background: #12151b;
  border: 1px solid #2a2f39;
  padding: 8px;
}

.topbar {
  min-height: 44px;
  display: grid;
  grid-template-columns: 40px 1fr 40px;
  align-items: center;
  color: var(--text-dim);
}

.level {
  text-align: center;
  font-size: 1.03rem;
}

.icon-btn {
  width: 40px;
  height: 40px;
  border: 1px solid transparent;
  border-radius: 10px;
  background: transparent;
  color: var(--text-dim);
  display: grid;
  place-items: center;
  font-size: 1.1rem;
  transition: transform 140ms ease, background 140ms ease;
}

.icon-btn.side {
  border-color: transparent;
  background: transparent;
  padding: 0;
  box-shadow: none;
  color: #e3e8f0;
}

.side-icon {
  width: 34px;
  height: 34px;
  display: block;
  pointer-events: none;
}

.hint-icon {
  width: 28px;
  height: 28px;
  display: block;
  margin: 0 auto;
  pointer-events: none;
}

.icon-btn:active {
  transform: scale(0.95);
  background: #20252f;
}

.core {
  flex: 1;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, #14181f 0%, #0f1217 100%);
  padding: 10px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 0;
  overflow: hidden;
}

.menu-core {
  justify-content: flex-start;
  padding-top: 0;
  padding-bottom: 0;
  gap: 10px;
  border: none;
  background: transparent;
}

.hero-title {
  font-family: "Cormorant Garamond", Georgia, serif;
  font-size: clamp(2.55rem, 11vw, 3.3rem);
  line-height: 1;
  color: #d9dde4;
  margin-top: 6vh;
  user-select: none;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.hero-sub {
  margin-top: -10px;
  font-size: 0.9rem;
  color: #626b7a;
  letter-spacing: 0.03em;
}

.menu-buttons,
.players-list {
  width: min(100%, 320px);
  display: grid;
  gap: 8px;
}

.menu-style {
  margin-top: 12vh;
  gap: 6px;
  width: min(100%, 320px);
}

.main-btn,
.key,
.enter-btn,
.answer-btn,
.choice-btn,
.help-btn,
.player-btn,
.lvl-btn {
  min-height: 50px;
  border: 1px solid var(--line-soft);
  border-radius: 6px;
  background: #14181f;
  color: var(--text);
  font-size: 1rem;
  transition: transform 120ms ease, border-color 140ms ease, background 140ms ease;
}

.main-btn:active,
.key:active,
.enter-btn:active,
.answer-btn:active,
.choice-btn:active,
.help-btn:active,
.player-btn:active,
.lvl-btn:active {
  transform: scale(0.97);
}

.menu-item {
  min-height: 52px;
  text-align: left;
  padding-inline: 14px;
  color: #cfd5df;
}

.game-pill {
  min-height: clamp(50px, 7.5vh, 56px);
  border-radius: 1px;
  background: #1a1e25;
  border-color: #252a33;
  color: #cbd1db;
  display: flex;
  align-items: center;
  gap: 14px;
  padding-inline: 16px;
  justify-content: flex-start;
  font-size: 1.04rem;
  letter-spacing: 0.015em;
}

.game-pill:hover {
  background: #1f242d;
  border-color: #363c48;
}

.play-outline {
  width: 0;
  height: 0;
  border-left: 15px solid #f1f3f6;
  border-top: 10px solid transparent;
  border-bottom: 10px solid transparent;
  position: relative;
  opacity: 0.92;
}

.play-outline::after {
  content: "";
  position: absolute;
  left: -13px;
  top: -7px;
  width: 0;
  height: 0;
  border-left: 11px solid #1a1e25;
  border-top: 7px solid transparent;
  border-bottom: 7px solid transparent;
}

.grid-icon {
  color: #aeb6c4;
  font-size: 1rem;
  display: inline-block;
  width: 16px;
  text-align: center;
}

.main-footer {
  margin-top: auto;
  padding-bottom: 4px;
}

.footer-label {
  text-align: center;
  color: #646d7c;
  font-size: 0.88rem;
  margin-bottom: 8px;
}

.footer-socials {
  display: flex;
  justify-content: center;
  gap: 14px;
}

.social-btn {
  width: 42px;
  height: 28px;
  border: 0;
  background: transparent;
  color: #adb4c1;
  font-size: 1rem;
  min-height: 0;
}

.player-btn {
  width: 100%;
  min-height: 54px;
  padding: 10px 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  text-align: left;
}

.player-btn.active {
  border-color: #8993a5;
}

.player-meta,
.settings-note {
  font-size: 0.84rem;
  color: var(--text-dim);
}

.achievement-card {
  width: min(100%, 320px);
  border: 1px solid var(--line-soft);
  border-radius: 8px;
  background: #12161d;
  padding: 12px;
  display: grid;
  gap: 10px;
}

.achievement-row {
  display: flex;
  justify-content: space-between;
  color: #c7ceda;
}

.player-form {
  width: min(100%, 320px);
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
}

.player-input,
.wordle-input,
.answer-input {
  min-height: 50px;
  border: 1px solid var(--line-soft);
  border-radius: 6px;
  background: #12161c;
  color: var(--text);
  font-size: 1rem;
  padding: 0 12px;
}

input,
textarea {
  user-select: text;
}

.player-input::placeholder,
.answer-input::placeholder {
  color: #697284;
}

.lang-row {
  width: min(100%, 320px);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.wordle-board {
  width: min(100%, 342px);
  display: grid;
  gap: 8px;
}

.wordle-row {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
}

.tile {
  aspect-ratio: 1;
  border: 1px solid #313744;
  border-radius: 6px;
  background: #141920;
  color: var(--text);
  display: grid;
  place-items: center;
  text-transform: uppercase;
  font-size: clamp(1.05rem, 4vw, 1.2rem);
}

.tile.hit {
  background: #e8edf3;
  border-color: #e8edf3;
  color: #0f1217;
}

.tile.close {
  background: #657082;
  border-color: #657082;
  color: #fff;
}

.tile.miss {
  opacity: 0.43;
}

.wordle-input-wrap {
  width: min(100%, 342px);
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
}

.wordle-input {
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 0.2em;
}

.math-puzzle {
  width: 100%;
  max-width: 540px;
  height: auto;
  min-height: 0;
  flex: 1 1 auto;
  border: 1px solid #262b34;
  border-radius: 6px;
  background: #171b22;
  padding: 8px;
}

.math-canvas {
  width: 100%;
  height: 100%;
}

.answer-strip {
  width: 100%;
  max-width: 540px;
  display: grid;
  grid-template-columns: minmax(72px, 0.62fr) 46px 46px minmax(78px, 0.52fr);
  gap: 6px;
  flex-shrink: 0;
}

.answer-input {
  color: #c3cad6;
  letter-spacing: 0.03em;
  padding: 0 8px;
  font-size: 0.9rem;
}

.answer-btn,
.help-btn {
  min-height: clamp(44px, 6.5dvh, 50px);
  min-width: 52px;
  font-size: 1.05rem;
}

.enter-btn {
  min-height: clamp(44px, 6.5dvh, 50px);
  min-width: clamp(84px, 18vw, 96px);
  font-size: 1rem;
  letter-spacing: 0.03em;
}

.answer-strip .answer-btn,
.answer-strip .help-btn {
  min-width: 46px;
  font-size: 1rem;
}

.answer-strip .enter-btn {
  min-width: clamp(78px, 16vw, 90px);
  font-size: 0.92rem;
}

.numpad {
  width: 100%;
  max-width: 540px;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
  flex-shrink: 0;
}

.key {
  min-height: clamp(42px, 6.2dvh, 49px);
  font-size: clamp(0.92rem, 2.6vw, 1rem);
  font-weight: 300;
}

.math-core {
  justify-content: flex-start;
  gap: 6px;
  padding-top: 8px;
  padding-bottom: 8px;
}

.levels-grid {
  width: 100%;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
}

.lvl-btn {
  min-height: 46px;
}

.toast {
  min-height: 18px;
  margin-top: 2px;
  text-align: center;
  font-size: 0.8rem;
  color: var(--warn);
  opacity: 0;
}

.toast.show {
  animation: toastFade 2100ms ease forwards;
}

.install-overlay {
  position: fixed;
  inset: 0;
  background: rgba(8, 10, 14, 0.45);
  backdrop-filter: blur(7px);
  -webkit-backdrop-filter: blur(7px);
  display: grid;
  place-items: center;
  z-index: 1000;
  padding: 18px;
}

.install-modal {
  width: min(92vw, 360px);
  border: 1px solid #2e3440;
  border-radius: 10px;
  background: #151a21;
  padding: 16px;
  display: grid;
  gap: 12px;
  text-align: center;
}

.install-title {
  font-size: 1.08rem;
  color: #eef2f8;
}

.install-hint {
  font-size: 0.87rem;
  color: #9ba3b2;
}

.install-btn {
  min-height: 48px;
  border: 1px solid #3a4250;
  border-radius: 8px;
  background: #212733;
  color: #f0f3f8;
  font-size: 0.96rem;
}

@keyframes toastFade {
  0% {
    opacity: 0;
    transform: translateY(4px);
  }
  18% {
    opacity: 0.95;
    transform: translateY(0);
  }
  70% {
    opacity: 0.78;
  }
  100% {
    opacity: 0;
    transform: translateY(8px);
  }
}

@media (max-height: 760px) {
  .hero-title {
    margin-top: 2.6vh;
  }

  .menu-style {
    margin-top: 7vh;
  }

  .wordle-board,
  .wordle-input-wrap {
    width: min(100%, 300px);
  }

  .math-puzzle {
    flex: 1 1 auto;
    min-height: 120px;
    padding: 6px;
  }

  .numpad {
    gap: 6px;
  }

  .answer-strip {
    gap: 4px;
    grid-template-columns: minmax(64px, 0.6fr) 40px 40px minmax(68px, 0.5fr);
  }

  .answer-btn,
  .help-btn {
    min-width: 46px;
    font-size: 1.05rem;
  }

  .enter-btn {
    min-width: 76px;
    font-size: 0.9rem;
  }

  .answer-strip .answer-btn,
  .answer-strip .help-btn {
    min-width: 40px;
    font-size: 0.9rem;
  }

  .answer-strip .enter-btn {
    min-width: 68px;
    font-size: 0.82rem;
  }

  .key {
    min-height: clamp(34px, 5.2dvh, 42px);
    font-size: 0.9rem;
  }
}