/* ── Move history panel, cat sticker, keyframes, responsive ─────── */
#history-panel {
  position: absolute;
  bottom: calc(var(--sp-4) + 32px + var(--sp-2)); /* sits above ← Menu */
  left: var(--sp-4);
  width: 160px;
  max-height: 220px;
  pointer-events: all;
  display: none;
  flex-direction: column;
  background: rgba(9,9,14,.88);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  overflow: hidden;
}
#history-panel.open { display: flex; }

#history-header {
  font-family: var(--font-mono);
  font-size: .44rem; letter-spacing: .2em; text-transform: uppercase;
  color: var(--text-dim);
  padding: var(--sp-1) var(--sp-2);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

#history-list {
  overflow-y: auto; flex: 1;
  padding: var(--sp-1) var(--sp-2);
  scrollbar-width: thin;
  scrollbar-color: rgba(232,228,220,.12) transparent;
  display: flex; flex-direction: column; gap: 1px;
}
#history-list::-webkit-scrollbar { width: 3px; }
#history-list::-webkit-scrollbar-thumb { background: rgba(232,228,220,.15); border-radius: 2px; }

.hist-row {
  display: grid;
  grid-template-columns: 18px 1fr 1fr;
  gap: 2px; align-items: baseline;
  font-family: var(--font-mono); font-size: .5rem; line-height: 1.7;
}
.hist-num { color: var(--text-dim); }
.hist-w   { color: var(--text); }
.hist-b   { color: var(--warm); }
.hist-row.latest .hist-w,
.hist-row.latest .hist-b { font-weight: 700; }

/* Ghost-piece trail shown on AI/opponent moves */
.ghost-piece-trail {
  position: absolute;
  pointer-events: none;
  opacity: 0;
  animation: ghostFade 600ms ease forwards;
}
@keyframes ghostFade {
  0%   { opacity: .55; }
  100% { opacity: 0; }
}

/* History toggle button */
#btn-history {
  font-family: var(--font-mono);
  font-size: .5rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase;
  padding: var(--sp-1) var(--sp-2);
  border-radius: var(--r-sm);
  border: 1px solid var(--border);
  background: rgba(9,9,14,.8);
  color: var(--text-dim); cursor: pointer;
  transition: background var(--ease), border-color var(--ease), color var(--ease);
  touch-action: manipulation;
  backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px);
}
#btn-history:hover  { background: rgba(232,228,220,.06); border-color: var(--border-active); color: var(--text); }
#btn-history.active { border-color: var(--accent); color: var(--accent-bright); background: rgba(74,127,165,.08); }

@media (max-width: 600px) {
  #history-panel { width: 130px; max-height: 150px; font-size: .44rem; }
}


/* ── History panel copy button ── */
#history-copy-btn {
  margin-left: auto;
  font-family: var(--font-mono); font-size: .44rem; letter-spacing: .08em; text-transform: uppercase;
  padding: 1px var(--sp-1);
  border-radius: var(--r-sm);
  border: 1px solid var(--border);
  background: transparent; color: var(--text-dim); cursor: pointer;
  transition: color var(--ease), border-color var(--ease);
}
#history-copy-btn:hover { color: var(--text); border-color: var(--border-active); }

/* ── Invite link row in waiting room ── */
.invite-link-row {
  display: flex; align-items: center; gap: var(--sp-1);
  margin-top: var(--sp-2);
}
.invite-link-display {
  font-family: var(--font-mono); font-size: .44rem;
  color: var(--text-dim); letter-spacing: .03em;
  background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--r-sm); padding: var(--sp-1) var(--sp-2);
  flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  text-align: left;
}
.btn-copy-link {
  font-family: var(--font-mono); font-size: .5rem; font-weight: 700;
  letter-spacing: .08em; text-transform: uppercase;
  padding: var(--sp-1) var(--sp-2);
  border-radius: var(--r-sm);
  border: 1px solid rgba(74,127,165,.45);
  background: transparent; color: var(--accent-bright); cursor: pointer;
  transition: background var(--ease), border-color var(--ease);
  white-space: nowrap; flex-shrink: 0;
}
.btn-copy-link:hover { background: rgba(74,127,165,.1); border-color: var(--accent); }



/* ── Cat button — tiny fixed bottom-right ── */
/* Wrapper provides the cooldown ring via conic-gradient pseudo-element */
#btn-cat-wrap {
  position: fixed; bottom: var(--sp-4); right: var(--sp-4);
  z-index: 500;
  width: 36px; height: 36px;
  border-radius: 50%;
  /* Cooldown ring: conic-gradient sweeps --cat-pct from accent → transparent */
  background: conic-gradient(
    rgba(255,180,200,.7) calc(var(--cat-pct, 0) * 1%),
    rgba(255,255,255,.08) calc(var(--cat-pct, 0) * 1%)
  );
  padding: 2px;
  transition: transform 120ms ease;
}
#btn-cat-wrap:hover { transform: scale(1.15); }

#btn-cat {
  width: 100%; height: 100%;
  border-radius: 50%;
  border: none;
  background: rgba(12,10,18,.92);
  font-size: 1rem; line-height: 1; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: background 120ms ease;
  backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
  user-select: none;
}
#btn-cat:active       { transform: scale(.88); }
#btn-cat.cooling      { cursor: not-allowed; opacity: .5; }

/* Cat sticker — JS physics drives position */
.cat-sticker {
  position: fixed;
  pointer-events: none;
  z-index: 9999;
  display: flex; flex-direction: column; align-items: center; gap: 6px;
  will-change: transform, opacity;
  transform-origin: center center;
}
.cat-sticker .cat-img-el {
  object-fit: cover;
  border-radius: 14px;
  border: 3px solid rgba(255,200,220,.85);
  box-shadow: 0 8px 36px rgba(0,0,0,.7);
  display: block;
  background: rgba(40,20,35,.8); /* visible placeholder while loading */
}
.cat-sticker .meow-label {
  font-family: var(--font-mono);
  font-size: .75rem; font-weight: 700;
  color: #ffb0cc;
  letter-spacing: .1em;
  text-shadow: 0 2px 8px rgba(0,0,0,.95);
}


@keyframes fadeUp {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes statusSlam {
  0%   { transform: scale(2); opacity: 0; }
  60%  { transform: scale(.92); opacity: 1; }
  100% { transform: scale(1); }
}
@keyframes floatUp {
  0%   { opacity: 1; transform: translateX(-50%) translateY(0) scale(1.1); }
  100% { opacity: 0; transform: translateX(-50%) translateY(-72px) scale(.7); }
}
@keyframes chkAnim {
  0%   { opacity: 1; }
  100% { opacity: 0; }
}
@keyframes shakeCss {
  0%,100% { transform: translate(0); }
  20%      { transform: translate(-5px,-3px); }
  40%      { transform: translate(5px, 3px); }
  60%      { transform: translate(-4px, 3px); }
  80%      { transform: translate(4px,-2px); }
}
.shake { animation: shakeCss 280ms ease; }


/* ═══════════════════════════════════════════
   RESPONSIVE — Mobile portrait ≤600px
═══════════════════════════════════════════ */
@media (max-width: 600px) {
  .brand-title   { font-size: clamp(3.2rem, 18vw, 5rem); }
  .brand-sub     { font-size: .52rem; letter-spacing: .32em; }
  .menu          { width: min(86vw, 300px); }
  .btn           { padding: 13px var(--sp-3); font-size: .6rem; }
  .expand-row    { width: 100%; }
  .obtn          { padding: 10px var(--sp-1); font-size: .48rem; }
  .hud-top       { top: var(--sp-2); gap: 2px; }
  .turn-pill     { font-size: .5rem; padding: var(--sp-1) var(--sp-3); }
  .sel-label     { font-size: .42rem; }
  .ctime         { font-size: 1.4rem; min-width: 72px; }
  .clock-lbl     { font-size: .38rem; }
  .btn-sm        { font-size: .48rem; padding: 9px var(--sp-3); }
  .info-tag      { font-size: .42rem; }
  .go-box        { padding: var(--sp-4); }
  .go-title      { font-size: 1.4rem; }
  .go-sub        { font-size: .5rem; }
  .op-box        { padding: var(--sp-4); }
  .op-title      { font-size: 1.1rem; }
  .room-code     { font-size: 1.9rem; }
  .pbtn          { width: 54px; height: 54px; font-size: 1.9rem; }
  .dmg           { font-size: .68rem; }
}

/* Landscape phone */
@media (max-width: 900px) and (orientation: landscape) {
  #landing       { flex-direction: row; gap: var(--sp-6); padding: 0 var(--sp-5); }
  .brand         { flex-shrink: 0; }
  .brand-title   { font-size: clamp(2.4rem, 8vw, 4rem); }
  .menu          { width: min(42vw, 260px); }
  .btn           { padding: 10px var(--sp-4); }
}