/* ── Next — color sequence pattern puzzle ──────────────────────────────────── */

#canvas-wrap {
  background: #2B2B2E;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  overflow-y: auto;
}

.nx-hide { display: none !important; }

/* Screens */
.nx-screen {
  width: 100%;
  max-width: 480px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 100%;
}

/* ── Start screen ─────────────────────────────────────────────────────────── */

#nx-start { justify-content: center; padding: 40px 24px 48px; }

.nx-start-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
}

.nx-start-logo {
  display: block;
  height: 48px;
  width: auto;
  margin: 0 auto 16px;
}

.nx-sub {
  font-family: 'DM Sans', sans-serif;
  font-size: 1rem;
  color: rgba(148,163,184,0.9);
  line-height: 1.6;
  margin: 0 0 36px;
  text-align: center;
}

/* ── HUD ──────────────────────────────────────────────────────────────────── */

.nx-hud {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  padding: 12px 18px 8px;
  font-family: 'DM Sans', sans-serif;
  font-size: 0.82rem;
  font-weight: 700;
  color: #64748b;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* ── Sequence area ────────────────────────────────────────────────────────── */

.nx-seq-wrap {
  position: relative;
  width: 100%;
  display: flex;
  justify-content: center;
  padding: 16px 0 8px;
}

.nx-thread-svg {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  overflow: visible;
}

.nx-seq-grid {
  display: grid;
  /* columns set by JS */
  gap: 10px;
  position: relative;
  z-index: 1;
}

/* ── Circles ──────────────────────────────────────────────────────────────── */

.nx-circle {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.nx-circle-filled {
  /* background set inline by JS */
  box-shadow: 0 2px 8px rgba(0,0,0,0.35);
}

.nx-circle-blank {
  background: transparent;
  border: 2.5px solid #9A9A9E;
  box-shadow: none;
}

/* Shake on wrong answer */
@keyframes nx-shake {
  0%,100% { transform: translateX(0); }
  20%      { transform: translateX(-5px); }
  40%      { transform: translateX(5px); }
  60%      { transform: translateX(-4px); }
  80%      { transform: translateX(4px); }
}

.nx-circle-blank.nx-shake {
  animation: nx-shake 0.35s ease-out;
}

/* Fill animation on correct */
@keyframes nx-fill-in {
  from { transform: scale(0.4); opacity: 0.6; }
  to   { transform: scale(1);   opacity: 1; }
}

.nx-circle-blank.nx-filled {
  border: none;
  /* background set inline */
  animation: nx-fill-in 0.3s cubic-bezier(0.34,1.56,0.64,1);
}

/* Position number on each circle */
.nx-pos-num {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-family: 'DM Sans', sans-serif;
  font-size: 0.62rem;
  font-weight: 700;
  color: rgba(255,255,255,0.55);
  pointer-events: none;
  user-select: none;
  text-shadow: 0 1px 2px rgba(0,0,0,0.6);
  line-height: 1;
}

.nx-circle-blank .nx-pos-num {
  color: rgba(154,154,158,0.8);
}

/* ── Palette ──────────────────────────────────────────────────────────────── */

.nx-palette-wrap {
  width: 100%;
  padding: 16px 12px 8px;
  display: flex;
  justify-content: center;
}

.nx-palette {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  max-width: 360px;
}

.nx-swatch {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 2.5px solid rgba(255,255,255,0.15);
  cursor: pointer;
  transition: transform 0.1s, border-color 0.1s;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  /* background set inline */
}

.nx-swatch:hover  { transform: scale(1.12); border-color: rgba(255,255,255,0.4); }
.nx-swatch:active { transform: scale(0.93); }

/* ── Feedback ─────────────────────────────────────────────────────────────── */

.nx-feedback {
  font-family: 'DM Sans', sans-serif;
  font-size: 0.88rem;
  color: #ef4444;
  height: 24px;
  text-align: center;
  padding: 0 16px;
  transition: opacity 0.3s;
}

/* ── Board-complete overlay ──────────────────────────────────────────────── */

#nx-game { position: relative; }

.nx-complete-overlay {
  position: absolute;
  inset: 0;
  background: rgba(28, 28, 30, 0.94);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 24px;
  z-index: 30;
  border-radius: 0;
}

.nx-complete-label {
  font-family: 'DM Serif Display', serif;
  font-size: 2.4rem;
  color: #f1f5f9;
  margin: 0;
  text-align: center;
  animation: nx-pop 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.nx-complete-btn {
  width: auto;
  padding: 14px 36px;
  animation: nx-pop 0.35s cubic-bezier(0.34, 1.56, 0.64, 1) 0.08s both;
}

.nx-wrong-label {
  color: #ef4444;
}

/* ── Thread ───────────────────────────────────────────────────────────────── */

.nx-thread-line {
  stroke: #9A9A9E;
  stroke-width: 2;
  fill: none;
  opacity: 0.55;
}

/* ── Win screen ───────────────────────────────────────────────────────────── */

#nx-win { justify-content: center; padding: 40px 24px 48px; }

.nx-win-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
}

.nx-win-logo {
  font-family: 'DM Serif Display', serif;
  font-size: 2.8rem;
  color: #f1f5f9;
  margin: 0 0 4px;
}

.nx-win-headline {
  font-family: 'DM Serif Display', serif;
  font-size: 2.2rem;
  color: #60a5fa;
  margin: 0 0 12px;
}

.nx-win-sub {
  font-family: 'DM Sans', sans-serif;
  font-size: 1rem;
  color: rgba(148,163,184,0.9);
  margin: 0 0 36px;
}

.nx-win-btns {
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-width: 280px;
  width: 100%;
  margin: 0 auto;
}

/* ── Buttons ──────────────────────────────────────────────────────────────── */

.nx-btn-primary {
  display: block;
  width: 100%;
  background: #1d4ed8;
  color: #fff;
  font-family: 'DM Sans', sans-serif;
  font-size: 1rem;
  font-weight: 800;
  padding: 15px 0;
  border: none;
  border-radius: 12px;
  cursor: pointer;
  box-shadow: 0 4px 0 #1e3a8a, 0 6px 16px rgba(0,0,0,0.45);
  transition: transform 0.07s, box-shadow 0.07s;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}

.nx-btn-primary:hover  { background: #2563eb; }
.nx-btn-primary:active { transform: translateY(3px); box-shadow: 0 1px 0 #1e3a8a; }

.nx-btn-ghost {
  display: block;
  width: 100%;
  background: transparent;
  border: 1px solid #334155;
  color: #64748b;
  padding: 14px 0;
  border-radius: 12px;
  font-family: 'DM Sans', sans-serif;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: border-color 0.12s, color 0.12s;
  -webkit-tap-highlight-color: transparent;
}

.nx-btn-ghost:hover  { border-color: #64748b; color: #94a3b8; }
.nx-btn-ghost:active { background: rgba(255,255,255,0.04); }

/* ── Start buttons ────────────────────────────────────────────────────────── */

.nx-start-btns {
  display: flex;
  flex-direction: column;
  gap: 10px;
  width: 100%;
  max-width: 280px;
  margin: 0 auto;
}