.emz-root {
  --emz-bg: #02030a;
  --emz-panel: #050816;
  --emz-accent: #00e5ff;
  --emz-accent-soft: #00bcd4;
  --emz-danger: #ff4b9f;
  --emz-gold: #ffd86b;
  --emz-text-main: #f4f7ff;
  --emz-text-soft: #9aa2c2;
  --emz-grid-gap: clamp(1px, 0.5vw, 3px);
  --emz-maze-size: 13;
  --emz-cell-size: calc((min(85vw, 85vh, 500px) - var(--emz-grid-gap) * (var(--emz-maze-size) - 1)) / var(--emz-maze-size));
  --emz-game-padding: clamp(10px, 3vw, 18px);
  --emz-border-radius-lg: clamp(12px, 3vw, 20px);
  --emz-border-radius-md: clamp(8px, 2vw, 14px);
  --emz-font-size-title: clamp(14px, 4vw, 16px);
  --emz-font-size-base: clamp(11px, 3vw, 13px);
  --emz-font-size-small: clamp(9px, 2.5vw, 11px);

  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  position: relative;
  width: min(95vw, 720px);
  margin: 0 auto;
  background: radial-gradient(circle at top left, #10152a 0, var(--emz-panel) 50%, #02030a 100%);
  border-radius: var(--emz-border-radius-lg);
  box-shadow:
    0 clamp(15px, 5vw, 30px) clamp(40px, 10vw, 80px) rgba(0, 0, 0, 0.85),
    0 0 0 1px rgba(0, 229, 255, 0.18);
  padding: var(--emz-game-padding);
  display: flex;
  flex-direction: column;
  gap: clamp(8px, 2vw, 12px);
  overflow: hidden;
  color: var(--emz-text-main);
}

.emz-root,
.emz-root *,
.emz-root *::before,
.emz-root *::after {
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

.emz-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: clamp(4px, 2vw, 8px);
  font-size: var(--emz-font-size-small);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--emz-text-soft);
  flex-wrap: wrap;
}

.emz-title {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.emz-title-main {
  font-size: var(--emz-font-size-title);
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--emz-accent);
  text-shadow:
    0 0 10px rgba(0, 229, 255, 0.6),
    0 0 24px rgba(0, 229, 255, 0.3);
  position: relative;
}

.emz-title-main::after {
  content: "▌";
  margin-left: 4px;
  animation: emz-cursorBlink 1s steps(1, end) infinite;
  opacity: 0.6;
}

.emz-title-sub {
  font-size: var(--emz-font-size-small);
  letter-spacing: 0.14em;
  opacity: 0.7;
}

.emz-badge {
  padding: clamp(2px, 0.5vw, 3px) clamp(6px, 1.5vw, 8px);
  border-radius: 999px;
  border: 1px solid rgba(0, 229, 255, 0.4);
  background: radial-gradient(circle at top, rgba(0, 229, 255, 0.15), transparent);
  color: var(--emz-accent-soft);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-weight: 500;
  font-size: var(--emz-font-size-small);
}

.emz-badge-dot {
  width: clamp(4px, 1.5vw, 6px);
  height: clamp(4px, 1.5vw, 6px);
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, #fff, #00e5ff 70%);
  box-shadow: 0 0 12px rgba(0, 229, 255, 0.9);
}

.emz-maze-wrapper {
  flex: 1;
  position: relative;
  border-radius: var(--emz-border-radius-md);
  background:
    radial-gradient(circle at top, rgba(0, 229, 255, 0.16), transparent 55%),
    radial-gradient(circle at bottom, rgba(255, 75, 159, 0.2), transparent 60%),
    #02030a;
  box-shadow:
    inset 0 0 clamp(15px, 5vw, 30px) rgba(0, 0, 0, 0.95),
    0 0 0 1px rgba(0, 229, 255, 0.12);
  padding: clamp(6px, 2vw, 10px);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  touch-action: none;
  min-height: 0;
}

.emz-maze {
  position: relative;
  display: grid;
  grid-template-columns: repeat(var(--emz-maze-size), 1fr);
  grid-auto-rows: 1fr;
  gap: var(--emz-grid-gap);
  filter: drop-shadow(0 0 clamp(10px, 3vw, 20px) rgba(0, 229, 255, 0.25));
  width: min(100%, calc(var(--emz-cell-size) * var(--emz-maze-size) + var(--emz-grid-gap) * (var(--emz-maze-size) - 1)));
  aspect-ratio: 1 / 1;
}

.emz-maze::before {
  content: "";
  position: absolute;
  inset: -60px;
  background:
    radial-gradient(circle at center, rgba(0, 229, 255, 0.25), transparent 55%);
  opacity: 0.2;
  mix-blend-mode: screen;
  pointer-events: none;
}

.emz-cell {
  position: relative;
  aspect-ratio: 1 / 1;
  background: #02030a;
  border-radius: clamp(2px, 0.8vw, 4px);
  overflow: hidden;
  box-shadow:
    0 0 0 1px rgba(7, 15, 32, 0.95),
    inset 0 0 clamp(12px, 4vw, 24px) rgba(0, 0, 0, 0.8);
  --emz-ping-color: rgba(0, 229, 255, 0.65);
  will-change: transform;
}

.emz-cell.emz-floor {
  background: #02030a;
}

.emz-cell.emz-near.emz-floor {
  background:
    radial-gradient(circle at 30% 20%, rgba(0, 229, 255, 0.3), transparent 70%),
    radial-gradient(circle at bottom, rgba(0, 60, 139, 0.8), #02030a);
  box-shadow:
    0 0 0 1px rgba(0, 229, 255, 0.2),
    inset 0 0 clamp(9px, 3vw, 18px) rgba(0, 0, 0, 0.9);
}

.emz-cell.emz-near.emz-wall {
  background:
    radial-gradient(circle at 20% 10%, rgba(255, 75, 159, 0.5), transparent 65%),
    radial-gradient(circle at bottom, rgba(22, 5, 25, 0.9), #05020a);
  box-shadow:
    0 0 0 1px rgba(255, 75, 159, 0.4),
    inset 0 0 clamp(10px, 3vw, 20px) rgba(0, 0, 0, 1);
}

.emz-cell.emz-wall {
  --emz-ping-color: rgba(255, 75, 159, 0.7);
}

.emz-cell.emz-exit {
  --emz-ping-color: rgba(255, 216, 107, 0.85);
}

.emz-cell.emz-near.emz-exit {
  background:
    radial-gradient(circle at 50% 20%, rgba(255, 255, 255, 0.7), transparent 55%),
    radial-gradient(circle at center, rgba(255, 216, 107, 0.9), rgba(255, 184, 0, 0.4) 60%, #2a1800 100%);
  box-shadow:
    0 0 0 1px rgba(255, 216, 107, 0.85),
    0 0 clamp(12px, 4vw, 24px) rgba(255, 216, 107, 0.9),
    inset 0 0 clamp(12px, 4vw, 24px) rgba(0, 0, 0, 0.95);
}

.emz-cell.emz-ping-visible::before {
  content: "";
  position: absolute;
  inset: -10%;
  border-radius: inherit;
  background:
    radial-gradient(circle at center, var(--emz-ping-color), transparent 65%);
  opacity: 0;
  transform: scale(0.4);
  pointer-events: none;
  animation: emz-sonarFlash 0.85s ease-out;
  animation-delay: var(--emz-ping-delay, 0s);
}

.emz-cell.emz-hero::after {
  content: "";
  position: absolute;
  inset: 18%;
  border-radius: 50%;
  background:
    radial-gradient(circle at 30% 25%, #ffffff, rgba(224, 255, 255, 0.2) 40%, transparent 70%),
    radial-gradient(circle at center, #00e5ff, #006064 65%, #001219 100%);
  box-shadow:
    0 0 clamp(5px, 2vw, 10px) rgba(0, 229, 255, 0.9),
    0 0 clamp(12px, 4vw, 24px) rgba(0, 229, 255, 0.8);
  animation: emz-heroPulse 1.4s ease-in-out infinite alternate;
}

.emz-cell.emz-exit::after {
  content: "";
  position: absolute;
  inset: 26%;
  border-radius: 999px;
  background:
    conic-gradient(from 0deg, rgba(255, 216, 107, 1), rgba(255, 140, 0, 0.9), rgba(255, 216, 107, 0.4), rgba(255, 216, 107, 1));
  box-shadow:
    0 0 clamp(8px, 2.5vw, 15px) rgba(255, 216, 107, 0.95),
    0 0 clamp(16px, 5vw, 32px) rgba(255, 216, 107, 0.9);
  opacity: 0;
  transform: scale(0.6);
  transition: opacity 0.25s ease-out, transform 0.2s ease-out;
}

.emz-cell.emz-near.emz-exit::after {
  opacity: 1;
  transform: scale(0.85);
}

.emz-hud {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: clamp(4px, 2vw, 8px);
  font-size: var(--emz-font-size-small);
  color: var(--emz-text-soft);
  padding-top: 2px;
  flex-wrap: wrap;
}

.emz-stats {
  display: flex;
  gap: clamp(6px, 2vw, 10px);
  flex-wrap: wrap;
}

.emz-stat {
  padding: clamp(3px, 1vw, 4px) clamp(6px, 1.5vw, 8px);
  border-radius: 999px;
  background: rgba(3, 9, 24, 0.9);
  border: 1px solid rgba(0, 229, 255, 0.18);
  display: inline-flex;
  align-items: baseline;
  gap: clamp(4px, 1vw, 6px);
  white-space: nowrap;
}

.emz-stat span {
  font-size: var(--emz-font-size-small);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  opacity: 0.7;
}

.emz-stat strong {
  font-size: var(--emz-font-size-small);
  color: var(--emz-accent-soft);
}

.emz-stat strong.emz-gold {
  color: var(--emz-gold);
}

.emz-shortcuts {
  text-align: right;
  font-size: var(--emz-font-size-small);
  opacity: 0.8;
}

.emz-shortcuts kbd {
  background: rgba(5, 11, 32, 0.85);
  border-radius: 4px;
  padding: 2px 4px;
  border: 1px solid rgba(99, 110, 170, 0.6);
  font-size: calc(var(--emz-font-size-small) - 1px);
  font-family: inherit;
  margin: 0 1px;
  color: var(--emz-text-main);
}

.emz-hint {
  font-size: var(--emz-font-size-small);
  margin-top: 3px;
  opacity: 0.9;
}

.emz-mobile-controls {
  display: none;
  gap: clamp(8px, 2vw, 12px);
  padding-top: clamp(8px, 2vw, 12px);
  touch-action: manipulation;
}

.emz-control-pad {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: repeat(3, 1fr);
  gap: clamp(4px, 1vw, 6px);
  width: clamp(120px, 35vw, 160px);
  aspect-ratio: 1 / 1;
}

.emz-control-btn {
  background: radial-gradient(circle at top, rgba(0, 229, 255, 0.2), rgba(5, 11, 32, 0.95));
  border: 1px solid rgba(0, 229, 255, 0.3);
  border-radius: clamp(8px, 2vw, 12px);
  color: var(--emz-accent);
  font-size: clamp(16px, 5vw, 24px);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.15s ease-out;
  -webkit-user-select: none;
  user-select: none;
  touch-action: manipulation;
}

.emz-control-btn:active {
  transform: scale(0.92);
  background: radial-gradient(circle at top, rgba(0, 229, 255, 0.4), rgba(5, 11, 32, 0.95));
  box-shadow: 0 0 15px rgba(0, 229, 255, 0.5);
}

.emz-control-btn.emz-empty {
  background: transparent;
  border: none;
  pointer-events: none;
}

.emz-control-btn.emz-up {
  grid-column: 2;
  grid-row: 1;
}

.emz-control-btn.emz-left {
  grid-column: 1;
  grid-row: 2;
}

.emz-control-btn.emz-right {
  grid-column: 3;
  grid-row: 2;
}

.emz-control-btn.emz-down {
  grid-column: 2;
  grid-row: 3;
}

.emz-action-buttons {
  display: flex;
  flex-direction: column;
  gap: clamp(6px, 1.5vw, 10px);
  justify-content: center;
}

.emz-action-btn {
  background: radial-gradient(circle at top, rgba(0, 229, 255, 0.25), rgba(5, 11, 32, 0.95));
  border: 1px solid rgba(0, 229, 255, 0.4);
  border-radius: clamp(10px, 2.5vw, 14px);
  color: var(--emz-accent);
  font-size: var(--emz-font-size-small);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: clamp(10px, 3vw, 14px) clamp(16px, 4vw, 24px);
  cursor: pointer;
  transition: all 0.15s ease-out;
  -webkit-user-select: none;
  user-select: none;
  touch-action: manipulation;
  white-space: nowrap;
  font-family: inherit;
}

.emz-action-btn:active {
  transform: scale(0.95);
  box-shadow: 0 0 20px rgba(0, 229, 255, 0.6);
}

.emz-action-btn.emz-sonar {
  background: radial-gradient(circle at top, rgba(0, 229, 255, 0.35), rgba(5, 11, 32, 0.95));
}

.emz-action-btn.emz-restart {
  background: radial-gradient(circle at top, rgba(255, 75, 159, 0.25), rgba(5, 11, 32, 0.95));
  border-color: rgba(255, 75, 159, 0.4);
  color: var(--emz-danger);
}

.emz-message {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.35s ease-out;
  background:
    radial-gradient(circle at top, rgba(0, 229, 255, 0.18), transparent 65%),
    radial-gradient(circle at bottom, rgba(255, 75, 159, 0.28), transparent 70%);
  z-index: 100;
}

.emz-message.emz-show {
  opacity: 1;
  pointer-events: auto;
}

.emz-message-inner {
  max-width: 90%;
  padding: clamp(14px, 4vw, 18px);
  border-radius: var(--emz-border-radius-md);
  background:
    radial-gradient(circle at top, rgba(0, 229, 255, 0.22), rgba(3, 9, 32, 0.95) 50%, rgba(1, 3, 10, 0.98));
  box-shadow:
    0 0 0 1px rgba(0, 229, 255, 0.35),
    0 clamp(12px, 4vw, 24px) clamp(35px, 10vw, 70px) rgba(0, 0, 0, 0.95);
  text-align: center;
}

.emz-message-inner h2 {
  margin: 0 0 6px;
  font-size: clamp(13px, 4vw, 15px);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--emz-accent);
}

.emz-message-inner p {
  margin: 4px 0;
  font-size: var(--emz-font-size-small);
  color: var(--emz-text-soft);
}

.emz-message-inner .emz-highlight {
  color: var(--emz-gold);
  font-weight: 600;
}

.emz-restart-hint {
  margin-top: 8px;
  font-size: var(--emz-font-size-small);
  color: var(--emz-accent-soft);
}

.emz-message-inner kbd {
  background: rgba(5, 11, 32, 0.85);
  border-radius: 4px;
  padding: 2px 5px;
  border: 1px solid rgba(99, 110, 170, 0.8);
  font-size: calc(var(--emz-font-size-small) - 1px);
  font-family: inherit;
  margin: 0 1px;
  color: var(--emz-text-main);
}

.emz-message-inner .emz-restart-btn {
  margin-top: 12px;
  background: radial-gradient(circle at top, rgba(0, 229, 255, 0.3), rgba(5, 11, 32, 0.95));
  border: 1px solid rgba(0, 229, 255, 0.5);
  border-radius: 10px;
  color: var(--emz-accent);
  font-size: var(--emz-font-size-small);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: clamp(10px, 3vw, 12px) clamp(20px, 5vw, 30px);
  cursor: pointer;
  transition: all 0.15s ease-out;
  font-family: inherit;
}

.emz-message-inner .emz-restart-btn:active {
  transform: scale(0.95);
  box-shadow: 0 0 20px rgba(0, 229, 255, 0.6);
}

@keyframes emz-sonarFlash {
  0% {
    opacity: 0;
    transform: scale(0.4);
    filter: blur(2px);
  }
  20% {
    opacity: 1;
    transform: scale(1);
    filter: blur(0.5px);
  }
  100% {
    opacity: 0;
    transform: scale(1.25);
    filter: blur(4px);
  }
}

@keyframes emz-heroPulse {
  0% {
    transform: scale(0.95);
    box-shadow:
      0 0 clamp(3px, 1vw, 6px) rgba(0, 229, 255, 0.7),
      0 0 clamp(8px, 2.5vw, 16px) rgba(0, 229, 255, 0.5);
  }
  100% {
    transform: scale(1.05);
    box-shadow:
      0 0 clamp(6px, 2vw, 12px) rgba(0, 229, 255, 1),
      0 0 clamp(13px, 4vw, 26px) rgba(0, 229, 255, 0.9);
  }
}

@keyframes emz-cursorBlink {
  0%, 49% { opacity: 0.7; }
  50%, 100% { opacity: 0; }
}

/* Responsive */
@media (max-width: 600px) {
  .emz-root {
    width: 100vw;
    border-radius: 0;
    margin-left: calc(-50vw + 50%);
  }

  .emz-shortcuts {
    display: none;
  }

  .emz-mobile-controls {
    display: flex;
    justify-content: center;
    align-items: center;
  }

  .emz-hud {
    justify-content: center;
  }

  .emz-stat strong.emz-gold {
    display: none;
  }

  .emz-stat:last-child span::after {
    content: " 🎯";
  }
}

@media (max-width: 360px) {
  .emz-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }

  .emz-badge {
    align-self: flex-start;
  }
}

@media (min-width: 601px) {
  .emz-message-inner .emz-restart-btn {
    display: none;
  }
}

@media (hover: hover) and (pointer: fine) {
  .emz-control-btn:hover {
    background: radial-gradient(circle at top, rgba(0, 229, 255, 0.35), rgba(5, 11, 32, 0.95));
    box-shadow: 0 0 12px rgba(0, 229, 255, 0.4);
  }

  .emz-action-btn:hover {
    box-shadow: 0 0 15px rgba(0, 229, 255, 0.5);
  }

  .emz-action-btn.emz-restart:hover {
    box-shadow: 0 0 15px rgba(255, 75, 159, 0.5);
  }

  .emz-message-inner .emz-restart-btn:hover {
    box-shadow: 0 0 15px rgba(0, 229, 255, 0.5);
  }
}

@media (max-height: 500px) and (orientation: landscape) {
  .emz-root {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 8px;
  }

  .emz-header {
    width: 100%;
    order: 1;
  }

  .emz-maze-wrapper {
    order: 2;
    flex: 0 0 auto;
    width: 50%;
    max-height: 70vh;
  }

  .emz-hud {
    order: 4;
    width: 100%;
  }

  .emz-mobile-controls {
    order: 3;
    flex: 0 0 auto;
    padding: 0;
    width: 45%;
  }

  .emz-control-pad {
    width: clamp(100px, 25vw, 140px);
  }
}

/* ── Toolbar & difficulty buttons ── */

.emz-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: clamp(8px, 2vw, 12px);
  flex-wrap: wrap;
}

.emz-diff-group {
  display: flex;
  gap: 1px;
  border-radius: clamp(8px, 2vw, 10px);
  background: rgba(3, 9, 32, 0.95);
  border: 1px solid rgba(0, 229, 255, 0.12);
  padding: 3px;
  box-shadow:
    inset 0 1px 0 rgba(0, 229, 255, 0.06),
    0 1px 3px rgba(0, 0, 0, 0.4);
}

.emz-diff {
  padding: clamp(5px, 1.2vw, 7px) clamp(12px, 3vw, 16px);
  border-radius: clamp(6px, 1.5vw, 8px);
  border: none;
  background: transparent;
  color: rgba(154, 162, 194, 0.6);
  font-size: var(--emz-font-size-small);
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  -webkit-user-select: none;
  user-select: none;
  touch-action: manipulation;
  white-space: nowrap;
  font-family: inherit;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  position: relative;
}

.emz-diff:hover {
  color: var(--emz-accent);
  background: rgba(0, 229, 255, 0.05);
}

.emz-diff.active {
  background:
    radial-gradient(circle at 50% 0%, rgba(0, 229, 255, 0.25), transparent 70%),
    rgba(0, 188, 212, 0.1);
  color: var(--emz-accent);
  box-shadow:
    0 0 10px rgba(0, 229, 255, 0.25),
    inset 0 1px 0 rgba(0, 229, 255, 0.15);
  text-shadow: 0 0 6px rgba(0, 229, 255, 0.5);
}

.emz-action-btn.emz-new-maze {
  background:
    radial-gradient(circle at 50% 0%, rgba(255, 75, 159, 0.15), transparent 60%),
    rgba(5, 11, 32, 0.95);
  border: 1px solid rgba(255, 75, 159, 0.3);
  color: var(--emz-danger);
  font-size: var(--emz-font-size-small);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: clamp(5px, 1.2vw, 7px) clamp(12px, 3vw, 16px);
  border-radius: clamp(8px, 2vw, 10px);
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  -webkit-user-select: none;
  user-select: none;
  touch-action: manipulation;
  white-space: nowrap;
  font-family: inherit;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

.emz-new-maze:active {
  transform: scale(0.96);
  box-shadow:
    0 0 18px rgba(255, 75, 159, 0.5),
    inset 0 0 8px rgba(255, 75, 159, 0.1);
  background:
    radial-gradient(circle at 50% 0%, rgba(255, 75, 159, 0.25), transparent 60%),
    rgba(10, 5, 25, 0.95);
}

@media (hover: hover) and (pointer: fine) {
  .emz-diff:hover {
    color: var(--emz-accent);
    background: rgba(0, 229, 255, 0.06);
  }

  .emz-new-maze:hover {
    box-shadow:
      0 0 14px rgba(255, 75, 159, 0.35),
      0 1px 3px rgba(0, 0, 0, 0.3);
    background:
      radial-gradient(circle at 50% 0%, rgba(255, 75, 159, 0.2), transparent 60%),
      rgba(10, 5, 25, 0.95);
  }
}

@media (max-width: 600px) {
  .emz-toolbar {
    justify-content: center;
  }
}