:root {
  color-scheme: dark;
  --bg: #121018;
  --surface: #1c1824;
  --ink: #f3efe6;
  --ink-soft: #b4aea2;
  --lime: #c6ff3d;
  --white: #ffffff;
  --dark: #0a0810;
  --well: #071018;
  --font-display: "Syne", "Arial Narrow", sans-serif;
  --font-body: "Manrope", "Segoe UI", system-ui, sans-serif;
  --pad: clamp(1.1rem, 4vw, 3.5rem);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.45);
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html,
body {
  min-height: 100%;
  background: var(--bg);
  color: var(--ink);
}

body {
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  padding: 1.6rem var(--pad) 2.4rem;
}

.brand {
  text-align: center;
  margin-bottom: 1.4rem;
}

.brand h1 {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 7vw, 4.2rem);
  font-weight: 800;
  letter-spacing: 0.12em;
  line-height: 0.95;
  text-transform: uppercase;
  color: var(--lime);
}

.brand p {
  margin-top: 0.45rem;
  color: var(--ink-soft);
  letter-spacing: 0.04em;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.7rem;
  border: none;
  border-radius: 999px;
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  transition: transform 0.25s var(--ease), filter 0.25s;
}

.btn:hover {
  transform: translateY(-2px);
  filter: brightness(1.05);
}

.btn-play {
  background: var(--lime);
  color: #17141c;
  box-shadow: 0 10px 24px rgba(198, 255, 61, 0.28);
}

.game-layout {
  display: grid;
  grid-template-columns: 10rem 1fr 12.5rem;
  gap: 1rem;
  align-items: start;
  max-width: 58rem;
  margin: 0 auto;
}

.side-panel {
  background: var(--dark);
  color: var(--white);
  border-radius: 1.1rem;
  padding: 0.9rem;
  display: grid;
  gap: 0.75rem;
}

.side-panel h2 {
  font-family: var(--font-display);
  font-size: 0.95rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  opacity: 0.7;
}

.stat {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 0.8rem;
  padding: 0.7rem 0.8rem;
}

.stat b {
  display: block;
  font-family: var(--font-display);
  font-size: 1.7rem;
  font-style: normal;
  line-height: 1;
}

.stat span {
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  opacity: 0.65;
}

.mini-board {
  background: var(--well);
  border-radius: 0.7rem;
  padding: 0.45rem;
  display: grid;
  place-items: center;
  min-height: 5.5rem;
}

.well-wrap {
  position: relative;
  width: min(100%, 22.5rem);
  margin-inline: auto;
  background: var(--dark);
  border-radius: 1.2rem;
  padding: 0.7rem;
  box-shadow: var(--shadow);
}

#game {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 0.7rem;
  background: var(--well);
}

#hold,
[data-next] {
  width: 100%;
  height: 4.6rem;
}

.overlay {
  position: absolute;
  inset: 0.7rem;
  border-radius: 0.7rem;
  background: rgba(7, 16, 24, 0.72);
  color: var(--white);
  display: grid;
  place-items: center;
  text-align: center;
  padding: 1.5rem;
}

.overlay.hidden {
  display: none;
}

.overlay h2 {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 6vw, 3.4rem);
  text-transform: uppercase;
  line-height: 0.9;
}

.overlay h2:empty,
.overlay p:empty {
  display: none;
}

.overlay p {
  margin: 0.7rem 0 1.2rem;
  color: rgba(255, 255, 255, 0.8);
}

.toast {
  position: absolute;
  left: 50%;
  top: 28%;
  transform: translate(-50%, 0);
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 5vw, 3.2rem);
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #fff;
  text-shadow: 0 8px 24px rgba(0, 0, 0, 0.45);
  pointer-events: none;
  opacity: 0;
}

.toast.show {
  animation: pop 0.9s var(--ease);
}

@keyframes pop {
  0% { opacity: 0; transform: translate(-50%, 12px) scale(0.8); }
  25% { opacity: 1; transform: translate(-50%, 0) scale(1.05); }
  100% { opacity: 0; transform: translate(-50%, -18px) scale(1); }
}

.touch-pad {
  display: none;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.45rem;
  margin-top: 0.9rem;
}

.touch-pad button {
  background: var(--dark);
  color: var(--white);
  border: none;
  border-radius: 0.8rem;
  padding: 0.85rem 0.4rem;
  font-family: var(--font-display);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  cursor: pointer;
}

.keys {
  margin: 1.4rem auto 0;
  max-width: 44rem;
  text-align: center;
  color: var(--ink-soft);
  font-size: 0.9rem;
}

@media (max-width: 980px) {
  .game-layout {
    grid-template-columns: 1fr;
    max-width: 28rem;
  }

  .game-layout > :nth-child(2) {
    order: -1;
  }

  .side-panel {
    grid-template-columns: 1fr 1fr;
  }

  .touch-pad {
    display: grid;
  }
}