:root {
  --bg: #070912;
  --panel: #0b1020;
  --ink: #d9f8ff;
  --wall: #00e5ff;
  --path: #05070f;
  --player: #ff7a18;
  --exit: #39ff88;
  --accent: #00c2ff;
  --trail-rgb: 0, 255, 220;
  --bg-glow-a: rgba(16, 39, 72, 0.9);
  --bg-glow-b: rgba(40, 15, 71, 0.75);
  --panel-glow: rgba(0, 194, 255, 0.25);
  --board-glow: rgba(0, 194, 255, 0.2);
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  overscroll-behavior: none;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at 20% 10%, var(--bg-glow-a) 0%, transparent 35%),
    radial-gradient(circle at 80% 20%, var(--bg-glow-b) 0%, transparent 32%),
    linear-gradient(145deg, #03050b 0%, var(--bg) 70%);
  color: var(--ink);
  display: grid;
  place-items: center;
  padding: 1rem;
  touch-action: none;
  transition: background 0.5s ease, color 0.5s ease;
}

body.troll-mode {
  --wall: #ff2e63;
  --path: #12020d;
  --exit: #8aff00;
  background:
    radial-gradient(circle at 18% 14%, rgba(140, 0, 34, 0.55) 0%, transparent 38%),
    radial-gradient(circle at 82% 16%, rgba(47, 0, 85, 0.45) 0%, transparent 34%),
    linear-gradient(160deg, #060106 0%, #12020d 74%);
}

.app {
  width: min(95vw, 700px);
  max-height: calc(100dvh - 1rem);
  background: var(--panel);
  border: 1px solid var(--accent);
  border-radius: 16px;
  padding: 1rem;
  box-shadow:
    0 0 0 1px var(--panel-glow) inset,
    0 0 32px var(--panel-glow),
    0 0 70px rgba(57, 255, 136, 0.08);
  text-align: center;
  overflow: hidden;
  scrollbar-width: none;
  transition: background 0.5s ease, border-color 0.5s ease, box-shadow 0.5s ease;
}

.app::-webkit-scrollbar {
  width: 0;
  height: 0;
}

body.troll-mode .app {
  border-color: #ff2e63;
  box-shadow:
    0 0 0 1px rgba(255, 46, 99, 0.35) inset,
    0 0 36px rgba(255, 46, 99, 0.28),
    0 0 80px rgba(141, 21, 48, 0.22);
}

h1 {
  margin-top: 0;
  margin-bottom: 0.5rem;
}

.hint {
  margin-top: 0;
  color: #94a7cc;
}

canvas {
  width: min(88vw, 68dvh, 600px);
  height: min(88vw, 68dvh, 600px);
  border: 2px solid var(--accent);
  background: var(--path);
  touch-action: none;
  box-shadow:
    0 0 25px var(--board-glow),
    0 0 10px rgba(57, 255, 136, 0.18) inset;
  transition: background 0.5s ease, border-color 0.5s ease, box-shadow 0.5s ease;
}

body.troll-mode canvas {
  border-color: #ff2e63;
  box-shadow:
    0 0 25px rgba(255, 46, 99, 0.35),
    0 0 16px rgba(138, 255, 0, 0.13) inset;
  animation: troll-flicker 3.1s infinite steps(2, end);
}

.progress-container {
  display: none;
}

.progress-bar-wrapper {
  display: none;
}

#progressBar {
  display: none;
}

.progress-label {
  display: none;
}

body.troll-mode .progress-label {
  display: none;
}

/* Home Menu Styles */
.home-menu {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(13, 27, 42, 0.95);
  backdrop-filter: blur(10px);
  z-index: 20;
  animation: homeSlideIn 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.home-menu.hidden {
  display: none;
}

.home-popup {
  background: linear-gradient(135deg, rgba(13, 27, 42, 0.9), rgba(30, 50, 70, 0.9));
  border: 2px solid var(--accent);
  border-radius: 16px;
  padding: 2.5rem;
  max-width: 600px;
  width: 90vw;
  max-height: 80vh;
  overflow: auto;
  box-shadow:
    0 0 0 1px rgba(0, 229, 255, 0.25) inset,
    0 0 40px rgba(0, 229, 255, 0.15),
    0 0 80px rgba(57, 255, 136, 0.1);
  text-align: center;
  animation: homeZoom 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.home-popup h1 {
  margin: 0 0 0.5rem;
  font-size: 2.5rem;
  background: linear-gradient(120deg, #00e5ff, #39ff88);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 900;
  letter-spacing: 2px;
}

.home-subtitle {
  font-size: 1.1rem;
  color: #7ba8d1;
  margin: 0 0 2rem;
  font-weight: 600;
}

.difficulty-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 1.2rem;
  margin-top: 1.5rem;
}

.difficulty-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 1.2rem;
  background: rgba(0, 0, 0, 0.3);
  border: 2px solid #1dd5ff;
  border-radius: 12px;
  color: #00e5ff;
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.difficulty-btn:hover {
  background: rgba(0, 229, 255, 0.1);
  border-color: #39ff88;
  transform: scale(1.08) translateY(-4px);
  box-shadow: 0 0 20px rgba(0, 229, 255, 0.4), 0 0 40px rgba(57, 255, 136, 0.2);
}

.difficulty-btn:active {
  transform: scale(1.02);
}

.difficulty-icon {
  font-size: 2rem;
}

.difficulty-name {
  font-size: 1rem;
  font-weight: 700;
}

.difficulty-desc {
  font-size: 0.75rem;
  color: #7ba8d1;
  font-weight: 400;
}

body.troll-mode .home-popup {
  border-color: #ff2e63;
  box-shadow:
    0 0 0 1px rgba(255, 46, 99, 0.25) inset,
    0 0 40px rgba(255, 46, 99, 0.2),
    0 0 80px rgba(141, 21, 48, 0.15);
}

body.troll-mode .difficulty-btn {
  border-color: #ff2e63;
  color: #ffb5cc;
}

body.troll-mode .difficulty-btn:hover {
  background: rgba(255, 46, 99, 0.1);
  border-color: #ff6b9b;
  box-shadow: 0 0 20px rgba(255, 46, 99, 0.4), 0 0 40px rgba(141, 21, 48, 0.2);
}

.stats-container {
  display: flex;
  gap: 2rem;
  justify-content: center;
  margin-top: 1rem;
}

.score {
  margin: 0;
  font-size: 1rem;
  color: var(--accent);
  font-weight: 600;
}

.steps {
  margin: 0;
  font-size: 1rem;
  color: #ff6b9b;
  font-weight: 600;
}

.steps.hidden {
  display: none;
}

@keyframes homeSlideIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes homeZoom {
  from {
    opacity: 0;
    transform: scale(0.85);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.theme-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(70px, 1fr));
  gap: 0.8rem;
  width: 100%;
}

.theme-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.3rem;
  padding: 0.6rem 0.4rem;
  background: rgba(0, 0, 0, 0.15);
  border: 2px solid transparent;
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  font-size: 0.7rem;
  color: var(--ink);
  font-weight: 600;
  text-align: center;
}

.theme-btn:hover {
  background: rgba(0, 194, 255, 0.15);
  border-color: var(--accent);
  transform: scale(1.1) translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 194, 255, 0.3);
}

.theme-btn.active {
  background: rgba(0, 194, 255, 0.3);
  border-color: var(--accent);
  box-shadow: 0 0 16px rgba(0, 194, 255, 0.5);
  transform: scale(1.05);
}

.theme-swatch {
  width: 100%;
  height: 35px;
  border-radius: 6px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
  transition: all 0.3s ease;
}

.theme-btn:hover .theme-swatch {
  box-shadow: 0 4px 16px rgba(0, 194, 255, 0.5);
}

.theme-label {
  display: block;
  line-height: 1.1;
  word-break: break-word;
}

.theme-modal {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 15;
  pointer-events: auto;
}

.theme-modal.hidden {
  pointer-events: none;
}

.theme-modal-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: 1;
}

.theme-modal.hidden .theme-modal-overlay {
  opacity: 0;
}

.theme-modal .theme-modal-overlay {
  opacity: 1;
}

.theme-modal-content {
  position: relative;
  background: var(--panel);
  border: 2px solid var(--accent);
  border-radius: 16px;
  padding: 1.5rem;
  max-width: 600px;
  max-height: 70vh;
  overflow-y: auto;
  box-shadow:
    0 0 0 1px rgba(0, 229, 255, 0.25) inset,
    0 0 40px rgba(0, 194, 255, 0.3),
    0 0 80px rgba(57, 255, 136, 0.1);
  opacity: 0;
  transform: scale(0.85) translateY(-20px);
  transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
  z-index: 2;
}

.theme-modal.hidden .theme-modal-content {
  opacity: 0;
  transform: scale(0.8) translateY(-30px);
  pointer-events: none;
}

.theme-modal .theme-modal-content {
  opacity: 1;
  transform: scale(1) translateY(0);
  pointer-events: auto;
}

.theme-modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.2rem;
  border-bottom: 1px solid rgba(0, 229, 255, 0.15);
  padding-bottom: 0.8rem;
}

.theme-modal-header h2 {
  margin: 0;
  font-size: 1.3rem;
  color: var(--accent);
  letter-spacing: 0.05em;
  transition: color 0.5s ease;
}

.theme-modal-close {
  background: none;
  border: none;
  font-size: 1.8rem;
  color: var(--accent);
  cursor: pointer;
  padding: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  transition: all 0.3s ease;
}

.theme-modal-close:hover {
  background: rgba(0, 194, 255, 0.15);
  transform: rotate(90deg);
}

body.troll-mode .theme-modal-content {
  border-color: #ff2e63;
  box-shadow:
    0 0 0 1px rgba(255, 46, 99, 0.25) inset,
    0 0 40px rgba(255, 46, 99, 0.3),
    0 0 80px rgba(141, 21, 48, 0.1);
}

body.troll-mode .theme-modal-header h2 {
  color: #ff2e63;
}

body.troll-mode .theme-modal-close {
  color: #ff2e63;
}

body.troll-mode .theme-modal-close:hover {
  background: rgba(255, 46, 99, 0.15);
}

.controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  margin-top: 0.9rem;
  flex-wrap: wrap;
}

button,
select {
  font: inherit;
  border-radius: 10px;
  border: 1px solid #1f3f67;
  background: #0b1730;
  color: var(--ink);
  padding: 0.45rem 0.7rem;
}

button {
  background: var(--accent);
  color: #031a22;
  border-color: #22d8ff;
  cursor: pointer;
  font-weight: 700;
  box-shadow: 0 0 12px rgba(0, 194, 255, 0.35);
}

button:hover {
  filter: brightness(1.08);
}

.status {
  min-height: 1.5rem;
  margin: 0.35rem 0 0.1rem;
  font-weight: 600;
  transition: color 0.5s ease;
}

.credits {
  margin: 0 auto 0.15rem;
  max-width: 100%;
  padding: 0 0.5rem;
  font-size: clamp(0.72rem, 2.2vw, 0.88rem);
  letter-spacing: 0.03em;
  line-height: 1.25;
  color: color-mix(in srgb, var(--ink) 78%, var(--accent) 22%);
  text-transform: none;
  text-align: center;
  white-space: normal;
  overflow-wrap: anywhere;
  word-break: break-word;
  text-shadow: 0 0 10px color-mix(in srgb, var(--accent) 55%, transparent);
  animation: creditsPulse 2.8s ease-in-out infinite;
}

@keyframes creditsPulse {
  0%,
  100% {
    opacity: 0.78;
    transform: translateY(0);
  }
  50% {
    opacity: 1;
    transform: translateY(-1px);
  }
}

.score {
  margin: 0.6rem 0 0.2rem;
  font-weight: 700;
  color: #9cf7ff;
  text-shadow: 0 0 12px rgba(0, 194, 255, 0.4);
  transition: color 0.5s ease, text-shadow 0.5s ease;
}

body.troll-mode .score {
  color: #ffd2e1;
  text-shadow: 0 0 12px rgba(255, 46, 99, 0.5);
}

body.troll-mode .credits {
  color: #ffb5cc;
  text-shadow: 0 0 10px rgba(255, 46, 99, 0.45);
}

@keyframes troll-flicker {
  0%, 100% {
    filter: brightness(1);
  }
  14% {
    filter: brightness(0.9);
  }
  15% {
    filter: brightness(1.08);
  }
  36% {
    filter: brightness(0.94);
  }
  62% {
    filter: brightness(1.05);
  }
  63% {
    filter: brightness(0.88);
  }
}

.win-overlay {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  pointer-events: none;
  z-index: 12;
}

.win-popup {
  transform: scale(0.85);
  background: rgba(6, 12, 24, 0.92);
  color: #7dff9f;
  border: 2px solid #39ff88;
  border-radius: 14px;
  padding: 0.8rem 1.2rem;
  font-weight: 800;
  font-size: clamp(1.2rem, 3vw, 2rem);
  letter-spacing: 0.08em;
  box-shadow:
    0 0 18px rgba(57, 255, 136, 0.55),
    0 0 44px rgba(0, 194, 255, 0.2);
  opacity: 0;
  transition: opacity 160ms ease, transform 160ms ease;
}

.win-popup.show {
  opacity: 1;
  transform: scale(1);
}

.troll-overlay {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  pointer-events: none;
  z-index: 13;
}

.troll-popup {
  --troll-rotate: 0deg;
  transform: scale(0.72) rotate(var(--troll-rotate));
  opacity: 0;
  background: rgba(25, 3, 16, 0.94);
  border: 2px solid #ff2e63;
  color: #ffd4e3;
  border-radius: 16px;
  padding: 0.6rem 1.3rem;
  font-size: clamp(2rem, 8vw, 4rem);
  box-shadow:
    0 0 24px rgba(255, 46, 99, 0.6),
    0 0 55px rgba(120, 0, 45, 0.45);
  transition: opacity 170ms ease, transform 170ms ease;
}

.troll-popup.show {
  opacity: 1;
  transform: scale(1) rotate(var(--troll-rotate));
}

.welcome-overlay {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  background: rgba(0, 0, 0, 0.75);
  z-index: 14;
  pointer-events: auto;
}

.welcome-overlay.hidden {
  display: none;
  pointer-events: none;
}

.welcome-popup {
  background: var(--panel);
  border: 2px solid #1dd5ff;
  border-radius: 16px;
  padding: 2rem;
  max-width: 500px;
  box-shadow:
    0 0 0 1px rgba(0, 229, 255, 0.25) inset,
    0 0 32px rgba(0, 194, 255, 0.3),
    0 0 70px rgba(57, 255, 136, 0.1);
  animation: welcome-slideIn 0.4s ease-out;
}

.welcome-popup h2 {
  margin-top: 0;
  margin-bottom: 1.5rem;
  color: #1dd5ff;
  font-size: 1.8rem;
  letter-spacing: 0.05em;
}

.welcome-content h3 {
  margin-top: 0;
  margin-bottom: 0.8rem;
  color: #39ff88;
  font-size: 1.1rem;
}

.welcome-content ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.welcome-content li {
  padding: 0.6rem 0;
  color: #7ba8d1;
  line-height: 1.6;
  border-bottom: 1px solid rgba(0, 229, 255, 0.1);
}

.welcome-content li:last-child {
  border-bottom: none;
}

.welcome-content strong {
  color: #00e5ff;
}

@keyframes welcome-slideIn {
  from {
    opacity: 0;
    transform: scale(0.9) translateY(-20px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

@keyframes rainbow-glow {
  0% {
    filter: hue-rotate(0deg) saturate(1.3);
  }
  25% {
    filter: hue-rotate(90deg) saturate(1.3);
  }
  50% {
    filter: hue-rotate(180deg) saturate(1.3);
  }
  75% {
    filter: hue-rotate(270deg) saturate(1.3);
  }
  100% {
    filter: hue-rotate(360deg) saturate(1.3);
  }
}

@keyframes exit-blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

body.rainbow-mode canvas {
  animation: rainbow-glow 8s linear infinite;
}

body.rainbow-mode .app {
  animation: rainbow-glow 12s linear infinite;
}

body.troll-mode .welcome-popup {
  border-color: #ff2e63;
  box-shadow:
    0 0 0 1px rgba(255, 46, 99, 0.25) inset,
    0 0 32px rgba(255, 46, 99, 0.3),
    0 0 70px rgba(141, 21, 48, 0.1);
}

body.troll-mode .welcome-popup h2 {
  color: #ff2e63;
}

body.troll-mode .welcome-content h3 {
  color: #8aff00;
}

body.troll-mode .welcome-content li {
  color: #ffb5cc;
  border-bottom-color: rgba(255, 46, 99, 0.1);
}

body.troll-mode .welcome-content strong {
  color: #ff7eab;
}

@media (max-width: 768px) {
  body {
    padding: 0;
    place-items: stretch;
  }

  .app {
    width: 100vw;
    min-height: 100dvh;
    max-height: 100dvh;
    border-radius: 0;
    padding: 0.8rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    overflow: auto;
  }

  canvas {
    width: min(96vw, 72dvh);
    height: min(96vw, 72dvh);
  }

  .theme-grid {
    grid-template-columns: repeat(auto-fit, minmax(55px, 1fr));
    gap: 0.5rem;
  }

  .theme-btn {
    padding: 0.4rem 0.3rem;
    font-size: 0.6rem;
    transition: all 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
  }

  .theme-btn:hover {
    transform: scale(1.08) translateY(-2px);
  }

  .theme-swatch {
    height: 25px;
  }

  .theme-modal-content {
    max-width: 90vw;
    max-height: 80vh;
    padding: 1rem;
    border-radius: 12px;
  }

  .theme-modal-header {
    margin-bottom: 1rem;
  }

  .theme-modal-header h2 {
    font-size: 1.1rem;
  }

  .home-popup {
    width: 95vw;
    max-width: 100%;
    padding: 1.5rem;
    border-radius: 12px;
  }

  .home-popup h1 {
    font-size: 1.8rem;
    letter-spacing: 1px;
  }

  .home-subtitle {
    font-size: 1rem;
    margin: 0 0 1.5rem;
  }

  .difficulty-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .difficulty-btn {
    padding: 1rem;
    font-size: 0.85rem;
  }

  .difficulty-icon {
    font-size: 1.5rem;
  }

  .difficulty-name {
    font-size: 0.9rem;
  }

  .difficulty-desc {
    font-size: 0.7rem;
  }

  .stats-container {
    flex-direction: column;
    gap: 0.5rem;
  }

  .credits {
    font-size: 0.74rem;
    margin-top: 0.35rem;
    padding: 0 0.35rem;
  }
}