.nw-header,
.nw {
  max-width: 64rem;
}

.nw {
  margin: 0 auto;
  padding: 0 1rem 2rem;
  -webkit-user-select: none;
  user-select: none;
}

.nw-stage {
  position: relative;
  border-radius: 0.75rem;
  overflow: hidden;
  border: 1px solid var(--border);
  background: #000;
}

.nw-stage canvas {
  display: block;
  width: 100%;
  aspect-ratio: 1000 / 560;
  touch-action: none; /* drags are orders, not page scrolls */
}

/* Fullscreen: letterbox the canvas at its aspect ratio. */
.nw-stage:fullscreen {
  display: flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 0;
}

.nw-stage:fullscreen canvas {
  width: min(100vw, 178.57vh);
}

.nw-hint {
  margin: 0.5rem 0 0;
  font-size: 0.8rem;
  color: var(--muted);
}

.nw-overlay {
  position: absolute;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  background: rgb(0 0 0 / 0.6);
  color: #fff;
  text-align: center;
  overflow-y: auto;
}

.nw-overlay.open {
  display: flex;
}

.nw-overlay h2 {
  font-size: clamp(1.5rem, 5vw, 2.5rem);
  margin: 0 0 0.25rem;
}

.nw-overlay p {
  margin: 0.25rem 0 0.75rem;
  color: #e7e5e4;
}

.nw-overlay .row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
  margin: 0.5rem 0;
}

.nw-overlay button {
  font: inherit;
  padding: 0.5rem 1.1rem;
  font-weight: 600;
  background: #fff;
  color: #1c1917;
  border: 0;
  border-radius: 0.5rem;
  cursor: pointer;
}

.nw-overlay button.primary {
  background: var(--accent);
  color: #fff;
}

.nw-overlay .help {
  font-size: 0.85rem;
  color: #d6d3d1;
}

/* Nameless Generals: a light board. */
.nw-stage {
  background: #f1ede2;
}

.nw-overlay {
  background: rgb(28 25 23 / 0.55);
}

.nw-overlay button.primary {
  background: #2563eb;
}

.ng-panel {
  width: 100%;
  max-width: 34rem;
  margin: auto;
}

.ng-opt {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  margin: 0.4rem 0;
}

.ng-opt span {
  min-width: 5.5rem;
  text-align: right;
  margin-right: 0.35rem;
  font-weight: 600;
}

.nw-overlay .ng-opt button {
  padding: 0.35rem 0.8rem;
  background: rgb(255 255 255 / 0.15);
  color: #fff;
}

.nw-overlay .ng-opt button.on {
  background: #fff;
  color: #1c1917;
}

/* Use as much of the window as fits: the full width, or as wide as the
   window's height allows at the game's 1000:560 shape. */
.nw-header,
.nw {
  max-width: max(64rem, min(100%, calc((100vh - 9rem) * 1000 / 560 + 2rem)));
}

/* Main menu: two big mode buttons. */
.ng-modes {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.6rem;
  margin: 0.75rem 0;
}

.nw-overlay .ng-mode {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.15rem;
  min-width: 11rem;
  padding: 0.7rem 1.2rem;
  font-size: 1.1rem;
}

.ng-mode small {
  font-size: 0.75rem;
  font-weight: 500;
  opacity: 0.8;
}

.nw-overlay .ng-link {
  padding: 0;
  background: none;
  color: #bfdbfe;
  text-decoration: underline;
  font-weight: 500;
}

.ng-kicker {
  margin: 0;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #fcd34d;
}

.nw-overlay .ng-goal {
  display: inline-block;
  padding: 0.3rem 0.8rem;
  border-radius: 999px;
  background: rgb(28 25 23 / 0.6);
  color: #fde68a;
  font-weight: 700;
}

/* Campaign level select. */
.ng-panel.ng-campaign {
  max-width: 46rem;
}

.ng-levels {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0.5rem;
  margin: 0.75rem 0;
}

.nw-overlay .ng-level {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.2rem;
  padding: 0.55rem 0.4rem;
  background: rgb(255 255 255 / 0.12);
  color: #fff;
  font-size: 0.8rem;
  line-height: 1.2;
  border: 1px solid rgb(255 255 255 / 0.18);
  transition: transform 0.12s, background 0.12s;
}

.nw-overlay .ng-level:not(.locked):hover {
  background: rgb(255 255 255 / 0.22);
  transform: translateY(-2px);
}

.nw-overlay .ng-level.locked {
  opacity: 0.45;
  cursor: default;
}

.ng-level .num {
  font-size: 1.3rem;
  font-weight: 800;
}

/* Stars: gold when earned; on the results screen they pop in one by one. */
.ng-stars {
  display: inline-flex;
  gap: 0.1em;
  letter-spacing: 0;
}

.ng-stars i {
  font-style: normal;
  color: rgb(255 255 255 / 0.25);
}

.ng-stars i.on {
  color: #fbbf24;
  text-shadow: 0 0 6px rgb(251 191 36 / 0.6);
}

.ng-stars.anim {
  font-size: clamp(2rem, 7vw, 3.2rem);
  margin: 0.2rem 0;
}

.ng-stars.anim i.on {
  animation: ng-star 0.5s cubic-bezier(0.3, 1.6, 0.5, 1) both;
  animation-delay: var(--d);
}

@keyframes ng-star {
  from {
    transform: scale(0) rotate(-40deg);
    opacity: 0;
  }
  to {
    transform: scale(1) rotate(0);
    opacity: 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .ng-stars.anim i.on {
    animation: none;
  }
}

/* Phones: the stage is short, so keep the menus compact. */
@media (max-width: 40rem) {
  .nw-overlay {
    padding: 0.5rem;
    font-size: 0.8rem;
  }

  .nw-overlay h2 {
    font-size: 1.25rem;
  }

  .nw-overlay p {
    margin: 0.15rem 0 0.4rem;
  }

  .nw-overlay .help {
    font-size: 0.7rem;
  }

  .ng-levels {
    grid-template-columns: repeat(5, 1fr);
    gap: 0.3rem;
    margin: 0.4rem 0;
  }

  .nw-overlay .ng-level {
    padding: 0.3rem 0.1rem;
  }

  .ng-level b {
    display: none;
  }

  .ng-level .num {
    font-size: 1rem;
  }

  .nw-overlay .ng-mode {
    min-width: 8rem;
    padding: 0.45rem 0.8rem;
    font-size: 0.95rem;
  }

  .nw-overlay button {
    padding: 0.4rem 0.8rem;
  }
}