/* ── Lava — ice block puzzle ─────────────────────────────────────────────── */

/* ── Lava background on body ─────────────────────────────────────────────── */
body {
  background-color: #8B0000;
  background-image:
    radial-gradient(ellipse at 20% 50%, #FF4400 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, #CC2200 0%, transparent 40%),
    radial-gradient(ellipse at 60% 80%, #FF8C00 0%, transparent 45%);
  background-size: 100% 100%;
  animation: lavaChurn 4s ease-in-out infinite alternate;
}

@keyframes lavaChurn {
  0%   { background-position: 0% 0%, 100% 0%, 50% 100%; }
  100% { background-position: 10% 20%, 90% 30%, 60% 80%; }
}

/* Extra lava layers via divs (parallax churn) */
.lava-layer {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

.lava-layer-2 {
  background-image:
    radial-gradient(ellipse at 70% 40%, rgba(255,100,0,0.45) 0%, transparent 55%),
    radial-gradient(ellipse at 30% 70%, rgba(180,0,0,0.35) 0%, transparent 45%);
  animation: lavaChurn2 3s ease-in-out infinite alternate;
}
@keyframes lavaChurn2 {
  0%   { background-position: 0% 0%, 100% 100%; opacity: 0.7; }
  100% { background-position: 15% 25%, 80%  70%; opacity: 1;   }
}

.lava-layer-3 {
  background-image:
    radial-gradient(ellipse at 50% 10%, rgba(255,160,0,0.3) 0%, transparent 50%),
    radial-gradient(ellipse at 10% 90%, rgba(200,30,0,0.3) 0%, transparent 40%);
  animation: lavaChurn3 5s ease-in-out infinite alternate;
}
@keyframes lavaChurn3 {
  0%   { background-position: 0% 0%, 0% 100%; opacity: 0.6; }
  100% { background-position: 20% 15%, 5%  85%; opacity: 0.9; }
}

/* ── Page shell ──────────────────────────────────────────────────────────── */
#lava-wrap {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: calc(100dvh - 60px);
  padding: 16px 20px calc(32px + env(safe-area-inset-bottom));
  font-family: 'DM Sans', sans-serif;
  user-select: none;
  -webkit-user-select: none;
}

/* ── Info bar ────────────────────────────────────────────────────────────── */
#lava-infobar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: 340px;
  margin-bottom: 20px;
  gap: 12px;
}

#lava-level-label {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.6);
}

.lava-counter {
  font-size: 1rem;
  font-weight: 800;
  color: #fff;
  background: rgba(0,0,0,0.35);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 20px;
  padding: 6px 16px;
  letter-spacing: 0.01em;
}

.lava-counter #lava-count {
  color: #FFD700;
  font-size: 1.15rem;
}

/* ── Grid ────────────────────────────────────────────────────────────────── */
#lava-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  width: 100%;
  max-width: 340px;
  padding: 12px;
  background: rgba(0,0,0,0.18);
  border-radius: 16px;
  border: 1px solid rgba(255,255,255,0.06);
  margin-bottom: 20px;
  position: relative;
}

/* ── Ice block cell ──────────────────────────────────────────────────────── */
.lava-cell {
  aspect-ratio: 1 / 1;
  position: relative;
  border-radius: 8px;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition: transform 0.08s;
}

/* Empty cell — lava shows through */
.lava-cell.empty {
  cursor: default;
  background: transparent;
}

/* Filled ice block */
.lava-cell.filled {
  background: linear-gradient(135deg, #E8F4FF 0%, #C2E0F5 45%, #B8DFFF 100%);
  border: 2px solid #7AB8D4;
  box-shadow:
    inset -3px -3px 6px rgba(168, 206, 222, 0.8),
    inset  2px  2px 4px rgba(255,255,255,0.9),
    0 2px 6px rgba(0,0,0,0.3);
}

/* Gloss highlight in upper-left corner */
.lava-cell.filled::before {
  content: '';
  position: absolute;
  top: 4px;
  left: 4px;
  width: 38%;
  height: 28%;
  background: linear-gradient(135deg, rgba(255,255,255,0.95) 0%, rgba(255,255,255,0.3) 100%);
  border-radius: 4px 4px 8px 4px;
  pointer-events: none;
}

/* Bottom/right inner shadow for 3D depth */
.lava-cell.filled::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 6px;
  background: linear-gradient(
    135deg,
    transparent 50%,
    rgba(100, 160, 190, 0.25) 100%
  );
  pointer-events: none;
}

.lava-cell.filled:active {
  transform: scale(0.94);
}

/* Bunny cell — same ice but can't be clicked away */
.lava-cell.bunny {
  cursor: default;
  background: linear-gradient(135deg, #DDF0FF 0%, #B8DFFF 45%, #A8D4FF 100%);
  border-color: #5AA0CC;
  box-shadow:
    inset -3px -3px 6px rgba(140, 190, 220, 0.8),
    inset  2px  2px 4px rgba(255,255,255,0.9),
    0 0 12px rgba(100,180,255,0.4),
    0 2px 6px rgba(0,0,0,0.3);
}

/* Bunny image inside bunny cell */
.lava-bunny-img {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 65%;
  height: 65%;
  object-fit: contain;
  pointer-events: none;
  z-index: 2;
}

/* ── Invalid flash (red) ─────────────────────────────────────────────────── */
.lava-cell.flash-invalid {
  animation: flashRed 0.4s ease-out forwards;
}
@keyframes flashRed {
  0%   { background: linear-gradient(135deg, #FF6666 0%, #FF3333 100%); border-color: #CC0000; }
  60%  { background: linear-gradient(135deg, #FF9999 0%, #FF6666 100%); border-color: #FF4444; }
  100% { background: linear-gradient(135deg, #E8F4FF 0%, #C2E0F5 45%, #B8DFFF 100%); border-color: #7AB8D4; }
}

/* ── Grid rotation ───────────────────────────────────────────────────────── */
#lava-grid {
  transform-origin: center center;
}

/* ── Gravity-clone fall (post-rotation, fixed-position overlay) ──────────── */
.lava-gravity-clone {
  border-radius: 8px;
  box-sizing: border-box;
}
.lava-gravity-clone.gravity-falling {
  animation: gravityFall 0.24s ease-in forwards;
}
@keyframes gravityFall {
  0%   { transform: translateY(0);    opacity: 1; }
  60%  { transform: translateY(28px); opacity: 0.6; }
  100% { transform: translateY(48px); opacity: 0; }
}

/* Bunny fall (game-over) — faster, with red glow */
.lava-cell.bunny-falling {
  animation: bunnyFall 0.35s ease-in forwards;
  pointer-events: none;
  z-index: 20;
}
@keyframes bunnyFall {
  0%   { transform: translateY(0)   scale(1);    opacity: 1; filter: none; }
  40%  { transform: translateY(24px) scale(0.98); opacity: 1; filter: drop-shadow(0 0 8px #FF2200); }
  100% { transform: translateY(55px) scale(0.85); opacity: 0; filter: drop-shadow(0 0 20px #FF4400); }
}

/* ── Rotation buttons ────────────────────────────────────────────────────── */
#lava-rotate-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  margin-bottom: 8px;
  width: 100%;
  max-width: 340px;
}

.hidden { display: none !important; }

.lava-rotate-prompt {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.5);
  margin: 0;
  transition: opacity 0.2s;
}

#lava-rotate-btns {
  display: flex;
  gap: 12px;
  width: 100%;
}

.lava-rotate-btn {
  flex: 1;
  font-size: 1.05rem;
  font-weight: 700;
  padding: 13px 0;
  letter-spacing: 0.04em;
  border-radius: 14px;
  opacity: 0.38;
  transition: background 0.15s, transform 0.1s, opacity 0.2s, border-color 0.2s, box-shadow 0.2s;
}
.lava-rotate-btn:disabled { cursor: default; pointer-events: none; }

.lava-rotate-btn.lava-rotate-active {
  opacity: 1;
  background: rgba(255,160,30,0.2);
  border-color: rgba(255,200,80,0.7);
  color: #FFD700;
  box-shadow: 0 0 14px rgba(255,200,50,0.3);
}
.lava-rotate-btn.lava-rotate-active:active {
  transform: scale(0.96);
  background: rgba(255,160,30,0.35);
}

/* ── Solution hint (Give Up) ─────────────────────────────────────────────── */
.lava-solution-hint {
  font-size: 0.82rem;
  font-weight: 600;
  color: rgba(100,255,120,0.9);
  letter-spacing: 0.02em;
  margin: 0 0 6px;
  text-align: center;
}

/* ── Controls ────────────────────────────────────────────────────────────── */
#lava-controls {
  display: flex;
  gap: 10px;
  margin-top: 0;
}

.lava-btn {
  background: rgba(0,0,0,0.35);
  color: #fff;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 24px;
  padding: 10px 22px;
  font-family: 'DM Sans', sans-serif;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s, transform 0.1s;
  -webkit-tap-highlight-color: transparent;
}
.lava-btn:active { transform: scale(0.96); background: rgba(0,0,0,0.5); }

.lava-btn-primary {
  background: rgba(255,200,50,0.25);
  border-color: rgba(255,200,50,0.5);
  color: #FFD700;
}
.lava-btn-primary:active { background: rgba(255,200,50,0.4); }

/* ── Overlays ────────────────────────────────────────────────────────────── */
.lava-overlay {
  position: fixed;
  inset: 0;
  background: rgba(60,0,0,0.75);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  animation: fadeIn 0.3s ease;
}
.lava-overlay.hidden { display: none; }

.lava-modal {
  background: rgba(20,5,5,0.92);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 20px;
  padding: 36px 28px;
  max-width: 320px;
  width: 90%;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.lava-modal-emoji {
  font-size: 3rem;
  line-height: 1;
  margin-bottom: 4px;
}

.lava-modal-title {
  font-family: 'DM Serif Display', serif;
  font-size: 1.9rem;
  color: #fff;
  margin: 0;
}

.lava-modal-sub {
  font-size: 0.95rem;
  color: rgba(255,255,255,0.65);
  margin: 0 0 8px;
}

.lava-modal-btns {
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: 100%;
  margin-top: 4px;
}
.lava-modal-btns .lava-btn { width: 100%; text-align: center; }

@keyframes fadeIn {
  from { opacity: 0; transform: scale(0.96); }
  to   { opacity: 1; transform: scale(1); }
}

/* ── Splash screen ───────────────────────────────────────────────────────── */
.lava-modal-logo {
  width: 140px;
  margin-bottom: 4px;
}
.lava-modal-logo img {
  width: 100%;
  height: auto;
  filter: brightness(0) invert(1);
}
.lava-splash-text {
  font-size: 0.85rem;
  line-height: 1.55;
  color: rgba(255,255,255,0.7);
  text-align: left;
  max-height: 45vh;
  overflow-y: auto;
  margin: 0 0 4px;
}

/* ── Solution highlight (Give Up) ───────────────────────────────────────── */
.lava-cell.solution-highlight {
  background: linear-gradient(135deg, #90FF90 0%, #40DD40 45%, #00CC00 100%) !important;
  border-color: #00AA00 !important;
  box-shadow:
    inset -2px -2px 5px rgba(0,180,0,0.4),
    inset  2px  2px 4px rgba(200,255,200,0.8),
    0 0 16px rgba(0,220,0,0.6),
    0 2px 6px rgba(0,0,0,0.3) !important;
}

/* ── Win celebration ─────────────────────────────────────────────────────── */
.lava-cell.win-glow {
  animation: winGlow 0.5s ease-out forwards;
}
@keyframes winGlow {
  0%   { box-shadow: 0 0 0 rgba(100,220,255,0); }
  50%  { box-shadow: 0 0 20px rgba(100,220,255,0.9), 0 0 40px rgba(150,240,255,0.5); }
  100% { box-shadow: 0 0 8px rgba(100,220,255,0.4); }
}

.lava-cell.bunny-bounce .lava-bunny-img,
.lava-cell.bunny-bounce {
  animation: bunnyBounce 0.7s ease-in-out;
}
@keyframes bunnyBounce {
  0%   { transform: translateY(0) scale(1); }
  25%  { transform: translateY(-10px) scale(1.1); }
  50%  { transform: translateY(0) scale(0.95); }
  70%  { transform: translateY(-5px) scale(1.05); }
  100% { transform: translateY(0) scale(1); }
}

/* ── Responsive ──────────────────────────────────────────────────────────── */
@media (max-width: 380px) {
  #lava-grid { max-width: 300px; gap: 6px; padding: 10px; }
}
@media (min-width: 500px) {
  #lava-grid   { max-width: 360px; gap: 10px; }
  #lava-infobar { max-width: 360px; }
}