:root {
  --bg-a: #f6e3ff;
  --bg-b: #fff6df;
  --bg-c: #e2f2ff;
  --bg-d: #dffff3;
  --panel-bg: rgba(255,255,255,0.92);
  --panel-border: #ffffff;
  --text-main: #5b4176;
  --text-dim: #a695bf;
  --accent: #cb7ef1;
  --accent-2: #4fb7ff;
  --accent-3: #ffcd3c;
  --mint: #4fe0b8;
  --timer-warn: #ff4d6d;
  --special-red: #ff4d6d;
  --special-blue: #3fa9ff;
  --cell-size: 44px;
  --side-pad: clamp(10px, 3vw, 20px);
  --font-round: "M PLUS Rounded 1c", "Hiragino Maru Gothic ProN", "Hiragino Sans", "Yu Gothic", system-ui, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  overscroll-behavior: none;
  background: var(--bg-d);
  color: var(--text-main);
  font-family: var(--font-round);
  font-weight: 500;
  -webkit-tap-highlight-color: transparent;
  -webkit-text-size-adjust: 100%;
  user-select: none;
}

#app {
  position: relative;
  height: 100dvh;
  height: 100vh;
  display: flex;
  flex-direction: column;
  background:
    radial-gradient(circle, rgba(255,255,255,0.55) 2px, transparent 2.6px) 0 0/28px 28px,
    linear-gradient(160deg, var(--bg-a) 0%, var(--bg-b) 38%, var(--bg-c) 72%, var(--bg-d) 100%);
  overflow: hidden;
}

/* ---------- HUD: logo (left) + bar (countdown, score) truly centered + sound (right) ---------- */
#hud {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: clamp(8px, 2.5vw, 14px);
  padding: max(8px, env(safe-area-inset-top)) var(--side-pad) 6px;
  flex-shrink: 0;
  z-index: 5;
}

#logo-btn {
  grid-column: 1;
  justify-self: start;
  display: flex;
  background: none;
  border: none;
  padding: 0;
  margin: 0;
  cursor: pointer;
}
#logo-btn:active { transform: scale(0.94); }

#hud-logo {
  height: clamp(100px, 26vw, 150px);
  width: auto;
  filter: drop-shadow(0 3px 5px rgba(180,120,180,0.35));
}

#hud-bar {
  grid-column: 2;
  justify-self: center;
  display: flex;
  align-items: center;
  gap: clamp(10px, 3vw, 20px);
  min-width: 0;
  padding: 6px clamp(12px, 3vw, 18px);
  background: var(--panel-bg);
  border: 3px solid var(--panel-border);
  outline: 2px solid var(--accent);
  outline-offset: -1px;
  border-radius: 20px;
  box-shadow: 0 5px 0 rgba(203,126,241,0.25), 0 8px 16px rgba(203,126,241,0.18);
}

#sound-toggle {
  grid-column: 3;
  justify-self: end;
}

.hud-cell {
  display: flex;
  flex-direction: column;
  align-items: center;
  line-height: 1.15;
}

.hud-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--accent);
}

#score-value {
  font-size: clamp(16px, 4.6vw, 22px);
  font-weight: 800;
  color: var(--text-main);
  font-variant-numeric: tabular-nums;
}

/* ---------- timer (large, boxed countdown) ---------- */
#timer-panel {
  flex: 0 0 auto;
  gap: 2px;
  padding: 5px 18px 7px;
  background: #fff;
  border: 3px solid var(--accent-2);
  border-radius: 16px;
  box-shadow: 0 4px 0 rgba(79,183,255,0.3), 0 6px 14px rgba(79,183,255,0.22);
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.timer-label {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: #fff;
  background: var(--accent-2);
  padding: 1px 8px;
  border-radius: 999px;
  white-space: nowrap;
}

#timer-value {
  font-size: clamp(28px, 9vw, 44px);
  font-weight: 900;
  font-variant-numeric: tabular-nums;
  color: var(--accent-2);
  line-height: 1;
  transition: color 0.25s ease;
}

#timer-panel.warn {
  border-color: var(--timer-warn);
  box-shadow: 0 4px 0 rgba(255,77,109,0.3), 0 6px 14px rgba(255,77,109,0.25);
  animation: timerBoxPulse 0.6s ease-in-out infinite;
}
#timer-panel.warn .timer-label {
  background: var(--timer-warn);
}
#timer-panel.warn #timer-value {
  color: var(--timer-warn);
}

@keyframes timerBoxPulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.06); }
}

.icon-btn {
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  cursor: pointer;
  min-width: 40px;
  min-height: 40px;
  padding: 6px;
}
.icon-btn:active { transform: scale(0.92); }

/* ---------- special gauge ---------- */
#gauge-wrap {
  flex-shrink: 0;
  align-self: center;
  width: calc(var(--cell-size) * 8);
  margin: 0 0 4px;
  height: 10px;
  background: rgba(255,255,255,0.65);
  border: 2px solid #fff;
  border-radius: 999px;
  overflow: hidden;
  box-shadow: 0 2px 6px rgba(120,90,160,0.18);
}
#gauge-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #ffd166, #ffb347);
  border-radius: 999px;
  transition: width 0.35s ease;
}

/* ---------- combo banner ---------- */
#combo-banner {
  position: absolute;
  top: 78px;
  left: 50%;
  transform: translateX(-50%) scale(0.8);
  z-index: 20;
  font-size: clamp(18px, 5vw, 28px);
  font-weight: 800;
  color: var(--accent);
  -webkit-text-stroke: 2px #fff;
  paint-order: stroke fill;
  text-shadow: 0 3px 0 rgba(203,126,241,0.4);
  opacity: 0;
  pointer-events: none;
  white-space: nowrap;
}
#combo-banner.show {
  animation: comboPop var(--banner-duration, 0.9s) cubic-bezier(.34,1.56,.64,1) forwards;
}
@keyframes comboPop {
  0% { opacity: 0; transform: translateX(-50%) scale(0.5); }
  20% { opacity: 1; transform: translateX(-50%) scale(1.15); }
  35% { transform: translateX(-50%) scale(1); }
  75% { opacity: 1; transform: translateX(-50%) scale(1); }
  100% { opacity: 0; transform: translateX(-50%) scale(1) translateY(-10px); }
}

/* ---------- board ---------- */
#board-wrap {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8px var(--side-pad) 18px;
  min-height: 0;
  touch-action: none;
}

#board {
  position: relative;
  background: rgba(255,255,255,0.55);
  border-radius: 22px;
  /* layered rings drawn as box-shadow (not border) so they don't eat into the
     content box the tiles are absolutely positioned against */
  box-shadow:
    0 0 0 5px #ffffff,
    0 0 0 8px var(--accent-3),
    0 14px 0 rgba(255,205,60,0.18),
    0 18px 40px rgba(120,90,160,0.28);
  touch-action: none;
  overflow: visible;
}

.tile {
  position: absolute;
  top: 0;
  left: 0;
  width: var(--cell-size);
  height: var(--cell-size);
  transition: transform 0.14s cubic-bezier(.4,0,.2,1);
  will-change: transform;
  z-index: 1;
}
.tile.falling { transition: transform 0.26s cubic-bezier(.4,0,.2,1); }
.tile.no-anim { transition: none; }
.tile.selected { z-index: 3; }
.tile.clearing { z-index: 2; }

.tile-inner {
  position: relative;
  width: 100%;
  height: 100%;
  padding: 6%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.tile-inner img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  pointer-events: none;
  -webkit-user-drag: none;
  filter: drop-shadow(0 2px 4px rgba(120,90,160,0.3));
}

.tile.selected .tile-inner {
  animation: selectedPulse 0.6s ease-in-out infinite;
}
@keyframes selectedPulse {
  0%, 100% { transform: scale(1); filter: brightness(1); }
  50% { transform: scale(1.12); filter: brightness(1.35); }
}

/* special pieces glow continuously: line = red, bomb = blue, colorbomb = gold */
.tile.special.line .tile-inner img {
  animation: glowPulseRed 1.3s ease-in-out infinite;
}
.tile.special.bomb .tile-inner img {
  animation: glowPulseBlue 1.3s ease-in-out infinite;
}
.tile.special.colorbomb .tile-inner img {
  animation: glowPulseColor 1.3s ease-in-out infinite;
}
@keyframes glowPulseRed {
  0%, 100% { filter: drop-shadow(0 0 5px rgba(255,77,109,0.55)) drop-shadow(0 2px 4px rgba(120,90,160,0.3)); }
  50%      { filter: drop-shadow(0 0 16px rgba(255,77,109,0.95)) drop-shadow(0 0 6px rgba(255,77,109,0.7)); }
}
@keyframes glowPulseBlue {
  0%, 100% { filter: drop-shadow(0 0 5px rgba(63,169,255,0.55)) drop-shadow(0 2px 4px rgba(120,90,160,0.3)); }
  50%      { filter: drop-shadow(0 0 16px rgba(63,169,255,0.95)) drop-shadow(0 0 6px rgba(63,169,255,0.7)); }
}
@keyframes glowPulseColor {
  0%, 100% { filter: drop-shadow(0 0 6px var(--glow-soft, rgba(255,255,255,0.75))) drop-shadow(0 2px 4px rgba(120,90,160,0.3)); }
  50%      { filter: drop-shadow(0 0 20px var(--glow-strong, rgba(255,255,255,1))) drop-shadow(0 0 9px var(--glow-strong, rgba(255,255,255,0.9))); }
}

.tile.spawn .tile-inner {
  animation: specialSpawn 0.7s cubic-bezier(.34,1.56,.64,1);
}
@keyframes specialSpawn {
  0% { transform: scale(0.1); opacity: 0.3; }
  45% { transform: scale(2.3); opacity: 1; }
  62% { transform: scale(0.72); }
  78% { transform: scale(1.25); }
  90% { transform: scale(0.93); }
  100% { transform: scale(1); }
}

.tile.clear-anim .tile-inner {
  animation: tileClear 0.2s ease-in forwards;
}
@keyframes tileClear {
  0% { transform: scale(1); opacity: 1; }
  100% { transform: scale(0.15); opacity: 0; }
}

.tile.invalid-swap {
  animation: invalidShake 0.26s ease-in-out;
}
@keyframes invalidShake {
  0%, 100% { transform: translate(var(--tx,0), var(--ty,0)); }
  25% { transform: translate(calc(var(--tx,0) + 4px), var(--ty,0)); }
  75% { transform: translate(calc(var(--tx,0) - 4px), var(--ty,0)); }
}

/* floating text popups */
.float-text {
  position: absolute;
  font-weight: 800;
  pointer-events: none;
  z-index: 30;
  white-space: nowrap;
  transform: translate(-50%, -50%);
  animation: floatUp 0.9s ease-out forwards;
  text-shadow: 0 2px 0 rgba(255,255,255,0.7);
}
.float-text.time-bonus { color: #29c98c; font-size: clamp(16px, 4.2vw, 22px); }
.float-text.score-text { color: #ff9d2e; font-size: clamp(13px, 3.4vw, 17px); }

@keyframes floatUp {
  0% { opacity: 0; transform: translate(-50%, -30%) scale(0.7); }
  20% { opacity: 1; transform: translate(-50%, -60%) scale(1.05); }
  100% { opacity: 0; transform: translate(-50%, -140%) scale(1); }
}

/* ---------- legend ---------- */
#legend {
  flex-shrink: 0;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: clamp(6px, 2vw, 12px);
  padding: 4px var(--side-pad) max(8px, env(safe-area-inset-bottom));
  z-index: 5;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--panel-bg);
  border: 2px solid #fff;
  border-radius: 999px;
  padding: 4px 14px 4px 4px;
  box-shadow: 0 3px 0 rgba(120,90,160,0.12), 0 4px 10px rgba(120,90,160,0.15);
}

.legend-item img {
  width: 40px;
  height: 40px;
  object-fit: contain;
  border-radius: 50%;
  background: #fff;
}

.legend-item span {
  font-size: 12px;
  font-weight: 700;
  color: var(--text-main);
  white-space: nowrap;
}

.legend-line img { box-shadow: 0 0 0 2px var(--special-red); }
.legend-bomb img { box-shadow: 0 0 0 2px var(--special-blue); }
.legend-colorbomb img { box-shadow: 0 0 0 2px #ffb347; }

/* ---------- overlays ---------- */
.overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(246,227,255,0.88);
  backdrop-filter: blur(4px);
  z-index: 50;
  padding: 20px;
}
.overlay.hidden { display: none; }

.overlay-card {
  text-align: center;
  max-width: 360px;
  max-height: 100%;
  overflow-y: auto;
  background: var(--panel-bg);
  border: 4px solid #fff;
  outline: 3px solid var(--accent);
  outline-offset: -2px;
  border-radius: 26px;
  padding: 30px 26px 26px;
  box-shadow: 0 10px 0 rgba(203,126,241,0.22), 0 16px 32px rgba(120,90,160,0.28);
}

.overlay-card h1 {
  margin: 0 0 12px;
}

.overlay-logo {
  width: clamp(140px, 46vw, 200px);
  height: auto;
  filter: drop-shadow(0 4px 8px rgba(203,126,241,0.35));
}

.overlay-card h2 {
  font-size: clamp(24px, 7vw, 32px);
  margin: 0 0 18px;
  font-weight: 800;
  color: var(--accent);
}

.overlay-desc {
  color: var(--text-dim);
  line-height: 1.7;
  margin-bottom: 26px;
  font-size: 14px;
  font-weight: 500;
}

.result-row {
  font-size: 16px;
  color: var(--text-dim);
  margin: 6px 0;
  font-weight: 500;
}
.result-row span {
  font-size: 22px;
  font-weight: 800;
  color: var(--accent);
  margin-left: 8px;
  font-variant-numeric: tabular-nums;
}

.primary-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 14px;
  padding: 15px 34px;
  font-family: var(--font-round);
  font-size: 16px;
  font-weight: 800;
  color: #fff;
  background: linear-gradient(90deg, var(--accent), #ff9d6c);
  border: 3px solid #fff;
  border-radius: 999px;
  cursor: pointer;
  box-shadow: 0 6px 0 rgba(203,126,241,0.45), 0 10px 20px rgba(203,126,241,0.35);
}
.primary-btn:active { transform: translateY(2px) scale(0.97); box-shadow: 0 3px 0 rgba(203,126,241,0.45), 0 6px 12px rgba(203,126,241,0.3); }

.primary-btn.small {
  margin-top: 0;
  padding: 9px 22px;
  font-size: 13px;
}

/* ---------- mode select (start overlay) ---------- */
.mode-select {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.mode-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 14px 20px;
  font-family: var(--font-round);
  color: #fff;
  background: linear-gradient(90deg, var(--accent), #ff9d6c);
  border: 3px solid #fff;
  border-radius: 20px;
  cursor: pointer;
  box-shadow: 0 6px 0 rgba(203,126,241,0.45), 0 10px 20px rgba(203,126,241,0.35);
}
.mode-btn:active { transform: translateY(2px) scale(0.97); box-shadow: 0 3px 0 rgba(203,126,241,0.45), 0 6px 12px rgba(203,126,241,0.3); }

.mode-btn[data-mode="timeAttack"] {
  background: linear-gradient(90deg, var(--accent-2), #4fe0b8);
  box-shadow: 0 6px 0 rgba(79,183,255,0.4), 0 10px 20px rgba(79,183,255,0.3);
}
.mode-btn[data-mode="timeAttack"]:active { box-shadow: 0 3px 0 rgba(79,183,255,0.4), 0 6px 12px rgba(79,183,255,0.28); }

.mode-btn-title {
  font-size: 17px;
  font-weight: 800;
}

.mode-btn-desc {
  font-size: 11px;
  font-weight: 500;
  opacity: 0.92;
  line-height: 1.4;
}

/* ---------- ranking ---------- */
.name-entry {
  display: none;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  width: 100%;
  margin-top: 6px;
}

.rank-msg {
  color: var(--accent);
  font-weight: 700;
  font-size: 13px;
  margin: 0;
}

.name-input {
  width: 110px;
  text-align: center;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  font-family: var(--font-round);
  font-weight: 800;
  font-size: 20px;
  padding: 8px 0;
  border-radius: 12px;
  border: 2px solid var(--accent-2);
  color: var(--text-main);
  background: #fff;
  outline: none;
}

.name-entry-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.text-btn {
  border: none;
  background: none;
  color: var(--text-dim);
  font-size: 12px;
  font-weight: 700;
  text-decoration: underline;
  font-family: var(--font-round);
  cursor: pointer;
}
.text-btn:active { opacity: 0.6; }

.ranking-box {
  width: 100%;
  max-width: 260px;
  background: rgba(255,255,255,0.55);
  border: 2px solid #fff;
  outline: 2px solid var(--accent-3);
  outline-offset: -1px;
  border-radius: 16px;
  padding: 10px 14px;
  margin-top: 12px;
}

.ranking-title {
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--accent);
  text-align: center;
  margin-bottom: 6px;
}

.ranking-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.ranking-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  font-size: 13px;
  padding: 2px 4px;
}

.ranking-list .rk-pos {
  font-weight: 800;
  color: var(--accent);
  width: 1.4em;
  text-align: center;
}

.ranking-list .rk-name {
  flex: 1;
  text-align: left;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--text-main);
}

.ranking-list .rk-score {
  font-weight: 700;
  color: var(--text-main);
  opacity: 0.85;
  font-variant-numeric: tabular-nums;
}

.ranking-list .rk-empty {
  opacity: 0.6;
  font-size: 12px;
  text-align: center;
  width: 100%;
  justify-content: center;
  color: var(--text-dim);
}

.pause-actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}

.secondary-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 10px;
  padding: 10px 22px;
  font-family: var(--font-round);
  font-size: 13px;
  font-weight: 700;
  color: var(--text-dim);
  background: #fff;
  border: 2px solid #e3d7f0;
  border-radius: 999px;
  cursor: pointer;
}
.secondary-btn:active { transform: scale(0.96); }