/* ── FUSE — precision-landing path puzzle styles ── */

#canvas-wrap {
  background: #0f172a;
  align-items: stretch;
  overflow-y: auto;
  padding: 0;
}

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

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

/* ── Start screen ── */
#fz-start {
  justify-content: center;
  padding: 40px 24px 48px;
}

.fz-start-inner {
  width: 100%;
  max-width: 320px;
  text-align: center;
}

.fz-logo-img {
  display: block;
  height: 72px;
  width: auto;
  margin: 0 auto 8px;
}

.fz-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;
}

.fz-start-btns {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* ── Game screen ── */
#fz-game {
  justify-content: flex-start;
  padding: 0 0 24px;
  position: relative;
}

/* ── HUD ── */
.fz-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;
}

/* ── Board wrap ── */
.fz-board-wrap {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8px 12px;
  position: relative;
  width: 100%;
}

/* ── Grid ── */
.fz-board {
  display: grid;
  /* columns + gap set by JS */
}

/* ── Cells ── */
.fz-cell {
  border-radius: 6px;
  /* width/height set by JS */
  position: relative;
}

/* Empty shape cell (unvisited) */
.fz-cell-empty {
  background: #1e293b;
  border: 1.5px solid #334155;
}

/* Start cell marker (before any move) */
.fz-cell-start {
  background: #1e293b;
  border: 2px solid #22c55e;
}

.fz-cell-start::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 38%;
  height: 38%;
  background: #22c55e;
  border-radius: 50%;
}

/* ── Water trail shimmer ── */
@keyframes fz-shimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.fz-cell-trail {
  background: linear-gradient(90deg, #1e3a5f 0%, #1e3a5f 35%, #3b82f6 50%, #1e3a5f 65%, #1e3a5f 100%);
  background-size: 300% 100%;
  animation: fz-shimmer 2.8s linear infinite;
  border: 1.5px solid #2563eb;
}

/* ── Head cell ── */
.fz-cell-head {
  background: #60a5fa;
  border: 2px solid #bfdbfe;
  box-shadow: 0 0 10px rgba(96,165,250,0.7);
}

.fz-cell-head::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 38%;
  height: 38%;
  background: #eff6ff;
  border-radius: 50%;
}

/* ── Spark cell (flame flicker) ── */
@keyframes fz-flicker {
  0%   { background-color: #f97316; box-shadow: inset 0 0 0 2px #fbbf24, 0 0 8px rgba(249,115,22,0.8); }
  18%  { background-color: #fbbf24; box-shadow: inset 0 0 0 2px #fff,    0 0 14px rgba(251,191,36,1);  }
  30%  { background-color: #fff;    box-shadow: inset 0 0 0 2px #fde68a, 0 0 20px rgba(255,255,200,1); }
  45%  { background-color: #ef4444; box-shadow: inset 0 0 0 2px #fbbf24, 0 0 6px  rgba(239,68,68,0.9);  }
  60%  { background-color: #fbbf24; box-shadow: inset 0 0 0 2px #fff,    0 0 16px rgba(251,191,36,1);  }
  78%  { background-color: #f97316; box-shadow: inset 0 0 0 2px #fde68a, 0 0 10px rgba(249,115,22,0.8);}
  100% { background-color: #f97316; box-shadow: inset 0 0 0 2px #fbbf24, 0 0 8px  rgba(249,115,22,0.8);}
}

.fz-cell-spark {
  animation: fz-flicker 1.4s ease-in-out infinite;
}

/* ── Extinguish animation (on win) ── */
@keyframes fz-extinguish {
  0%   { background-color: #fbbf24; box-shadow: 0 0 24px rgba(251,191,36,1); }
  35%  { background-color: #93c5fd; box-shadow: 0 0 12px rgba(147,197,253,0.7); }
  100% { background-color: #1e3a5f; box-shadow: none; }
}

.fz-cell-extinguish {
  animation: fz-extinguish 0.65s ease-out forwards;
}

/* ── Non-shape cell ── */
.fz-cell-void {
  background: transparent;
  border: none;
  pointer-events: none;
}

/* ── Board explosion flash (on loss) ── */
@keyframes fz-board-flash {
  0%   { opacity: 0;   background: rgba(239,68,68,0.15); }
  20%  { opacity: 1;   background: rgba(239,68,68,0.55); }
  65%  { opacity: 0.5; background: rgba(251,191,36,0.25);}
  100% { opacity: 0;   background: transparent; }
}

.fz-board-wrap.fz-exploding::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 4px;
  pointer-events: none;
  z-index: 10;
  animation: fz-board-flash 0.5s ease-out forwards;
}

/* ── Overlays (fail + level-complete) — inside board-wrap ── */
.fz-overlay {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.92);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  z-index: 20;
  border-radius: 4px;
}

.fz-overlay-label {
  font-family: 'DM Serif Display', serif;
  font-size: 2.6rem;
  color: #ef4444;
  margin: 0;
  animation: fz-pop 0.3s cubic-bezier(0.34,1.56,0.64,1);
}

.fz-overlay-big {
  font-family: 'DM Serif Display', serif;
  font-size: 2.4rem;
  color: #60a5fa;
  margin: 0;
  text-align: center;
  animation: fz-pop 0.3s cubic-bezier(0.34,1.56,0.64,1);
}

.fz-overlay-count {
  font-family: 'DM Sans', sans-serif;
  font-size: 0.9rem;
  color: #64748b;
  margin: 0;
}

@keyframes fz-pop {
  0%   { transform: scale(0.6); opacity: 0; }
  100% { transform: scale(1);   opacity: 1; }
}

/* ── D-pad ── */
.fz-dpad {
  display: grid;
  grid-template-areas:
    ".    up   ."
    "left down right";
  grid-template-columns: 56px 56px 56px;
  grid-template-rows: 56px 56px;
  gap: 6px;
  margin: 12px auto 4px;
}

.fz-dir {
  display: flex;
  align-items: center;
  justify-content: center;
  background: #1e293b;
  border: 1.5px solid #334155;
  border-radius: 10px;
  color: #94a3b8;
  font-size: 1.1rem;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
  touch-action: manipulation;
  transition: background 0.08s, transform 0.06s;
}

.fz-dir:active {
  background: #2d3a5e;
  transform: scale(0.92);
}

.fz-up    { grid-area: up; }
.fz-left  { grid-area: left; }
.fz-down  { grid-area: down; }
.fz-right { grid-area: right; }

/* ── Win screen ── */
#fz-win {
  justify-content: center;
  padding: 40px 24px 48px;
}

.fz-win-inner {
  width: 100%;
  max-width: 320px;
  text-align: center;
}

.fz-win-logo-text {
  font-family: 'DM Serif Display', serif;
  font-size: 2.8rem;
  color: #fbbf24;
  margin: 0 0 4px;
  letter-spacing: 0.06em;
  text-shadow: 0 0 20px rgba(251,191,36,0.4);
}

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

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

.fz-end-btns {
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-width: 280px;
  margin: 0 auto;
}

/* ── Buttons ── */
.fz-btn-primary {
  display: block;
  width: 100%;
  background: #1d4ed8;
  color: #fff;
  font-family: 'DM Sans', sans-serif;
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  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, background 0.1s;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}

.fz-btn-primary:hover  { background: #2563eb; }
.fz-btn-primary:active {
  transform: translateY(3px);
  box-shadow: 0 1px 0 #1e3a8a, 0 2px 8px rgba(0,0,0,0.4);
}

.fz-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;
  letter-spacing: 0.03em;
  transition: border-color 0.12s, color 0.12s;
  -webkit-tap-highlight-color: transparent;
}

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