:root {
  --bg-color: #050505;
  --panel-bg: rgba(10, 10, 12, 0.7);
  --accent-color: #8b5cf6;
  --accent-glow: rgba(139, 92, 246, 0.4);
  --text-primary: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.5);
  --canvas-bg: #030303;
  --border-glow: 0 0 20px rgba(139, 92, 246, 0.1);
  --font-main: 'Inter', system-ui, -apple-system, sans-serif;
  --ui-blur: blur(24px);
  --ui-spacing: 2rem;
  --btn-radius: 50px;
}

[data-theme="light"] {
  --bg-color: #fafafa;
  --panel-bg: rgba(255, 255, 255, 0.85);
  --text-primary: #18181b;
  --text-secondary: rgba(24, 24, 27, 0.6);
  --canvas-bg: #f4f4f5;
  --accent-glow: rgba(139, 92, 246, 0.2);
  --ui-blur: blur(30px);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: var(--font-main);
}

body {
  background-color: var(--bg-color);
  color: var(--text-primary);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  overflow: hidden;
  background: radial-gradient(circle at center, #111 0%, #050505 100%);
}

.game-container {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  animation: fadeIn 1.2s cubic-bezier(0.22, 1, 0.36, 1);
}

#gameCanvas {
  display: block;
  background-color: #000000;
  /* Fallback */
  background-color: var(--canvas-bg);
  box-shadow: var(--border-glow), 0 20px 50px rgba(0, 0, 0, 0.8);
  border: 1px solid rgba(255, 255, 255, 0.08);
  transition: transform 0.3s ease;
}

.ui-overlay {
  pointer-events: none;
  display: flex;
  flex-direction: column;
  gap: var(--ui-spacing);
  transition: all 0.5s ease;
}

.hud-container {
  position: absolute;
  top: var(--ui-spacing);
  left: var(--ui-spacing);
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  z-index: 100;
  pointer-events: none;
  animation: slideInLeft 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.hud-container>* {
  pointer-events: auto;
}

.stat-module {
  background: var(--panel-bg);
  backdrop-filter: var(--ui-blur);
  -webkit-backdrop-filter: var(--ui-blur);
  padding: 1.5rem;
  border-radius: 24px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
  animation: fadeIn 0.8s cubic-bezier(0.16, 1, 0.3, 1) backwards;
  max-width: fit-content;
}

.stat-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--text-secondary);
  margin-bottom: 0.25rem;
  font-weight: 600;
}

.stat-value {
  font-size: 1.75rem;
  font-weight: 800;
  background: linear-gradient(135deg, #fff 0%, var(--accent-color) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 0 10px var(--accent-glow));
}

.cooldown-container {
  width: 12rem;
  height: 6px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 10px;
  margin-top: 1rem;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

#cooldown-bar {
  height: 100%;
  width: 100%;
  background: linear-gradient(90deg, var(--accent-color), #c084fc);
  box-shadow: 0 0 15px var(--accent-color);
  transition: width 0.15s ease-out;
}

#cooldown-bar.ready {
  animation: barPulse 1s infinite alternate;
}

.xp-container {
  width: 12rem;
  height: 6px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 10px;
  margin-top: 1rem;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

#xp-bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #84cc16, #10b981);
  box-shadow: 0 0 15px rgba(132, 204, 22, 0.5);
  transition: width 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}

@keyframes barPulse {
  from {
    filter: brightness(1) blur(0px);
  }

  to {
    filter: brightness(1.5) blur(1px);
  }
}

.score-module {
  position: absolute;
  top: var(--ui-spacing);
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
  background: var(--panel-bg);
  backdrop-filter: var(--ui-blur);
  padding: 1rem 3rem;
  border-radius: 100px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.2);
  z-index: 200;
  animation: slideDown 0.8s cubic-bezier(0.16, 1, 0.3, 1) backwards;
  pointer-events: none;
}

.screen-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(4, 4, 6, 0.9);
  backdrop-filter: blur(32px);
  -webkit-backdrop-filter: blur(32px);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 9999;
  padding: var(--ui-spacing);
  transition: all 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}

.splash-title {
  font-size: clamp(3rem, 10vw, 6rem);
  font-weight: 800;
  letter-spacing: 0.2em;
  color: white;
  text-shadow:
    0 0 10px var(--accent-color),
    0 0 20px var(--accent-color),
    0 0 40px var(--accent-glow),
    0 0 80px var(--accent-glow);
  animation:
    splashFadeZoom 3.5s cubic-bezier(0.22, 1, 0.36, 1) forwards,
    neonFlicker 0.1s infinite alternate;
}

@keyframes splashFadeZoom {
  0% {
    opacity: 0;
    transform: scale(0.9);
  }

  20% {
    opacity: 1;
    transform: scale(1);
  }

  100% {
    opacity: 1;
    transform: scale(1.1);
  }
}

@keyframes neonFlicker {
  0% {
    opacity: 0.95;
    filter: brightness(1);
  }

  100% {
    opacity: 1;
    filter: brightness(1.1);
  }
}

.fade-out {
  opacity: 0 !important;
  pointer-events: none;
}

@keyframes overlayFadeIn {
  from {
    opacity: 0;
    backdrop-filter: blur(0px);
  }

  to {
    opacity: 1;
    backdrop-filter: blur(25px);
  }
}

/* Split Menu Layout */
.split-menu-container {
  display: flex;
  width: 90%;
  max-width: 1200px;
  height: 70vh;
  gap: 2rem;
  animation: menuAppear 1s cubic-bezier(0.22, 1, 0.36, 1);
}

@keyframes menuAppear {
  0% {
    opacity: 0;
    transform: translateY(20px);
  }

  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

.menu-panel {
  flex: 1;
  background: var(--panel-bg);
  backdrop-filter: var(--ui-blur);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 32px;
  padding: 3.5rem;
  display: flex;
  flex-direction: column;
  transition: all 0.5s cubic-bezier(0.22, 1, 0.36, 1);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

.panel-left {
  flex: 1.2;
  justify-content: space-between;
  border-left: 4px solid var(--accent-color);
  box-shadow: -20px 0 50px rgba(0, 0, 0, 0.5);
}

.panel-right {
  gap: 2rem;
  background: rgba(10, 10, 15, 0.4);
}

.branding .main-title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  margin-top: 1rem;
  margin-bottom: 0.5rem;
  text-align: left;
  letter-spacing: -0.02em;
  font-weight: 900;
  line-height: 1;
  background: linear-gradient(135deg, #fff 0%, var(--accent-color) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 0 20px var(--accent-glow));
}

.branding .subtitle {
  letter-spacing: 0.3em;
  opacity: 0.7;
}

/* Hub Button */
.btn-hub {
  position: relative;
  width: 100%;
  padding: 1.5rem 2.5rem;
  font-size: 1.25rem;
  font-weight: 700;
  background: var(--accent-color);
  color: white;
  border: none;
  border-radius: var(--btn-radius);
  cursor: pointer;
  overflow: hidden;
  transition: all 0.3s cubic-bezier(0.22, 1, 0.36, 1);
  box-shadow: 0 10px 30px var(--accent-glow);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.btn-hub:hover {
  transform: translateY(-4px) scale(1.02);
  filter: brightness(1.1);
  box-shadow: 0 20px 40px var(--accent-glow);
}

.btn-minimal {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-secondary);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  cursor: pointer;
  padding: 0.75rem 1.5rem;
  border-radius: var(--btn-radius);
  transition: all 0.3s ease;
  align-self: flex-start;
}

.btn-minimal:hover {
  background: rgba(239, 68, 68, 0.1);
  border-color: #ef4444;
  color: #ef4444;
}

.screen-content {
  text-align: center;
}

.premium-btn {
  background: var(--accent-color);
  color: white;
  border: none;
  padding: 1.25rem 3rem;
  font-size: 1.1rem;
  font-weight: 700;
  border-radius: var(--btn-radius);
  cursor: pointer;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  transition: all 0.4s cubic-bezier(0.22, 1, 0.36, 1);
  box-shadow: 0 8px 25px var(--accent-glow);
  pointer-events: auto;
}

.premium-btn:hover,
.premium-btn:focus-visible {
  transform: translateY(-5px) scale(1.02);
  box-shadow: 0 15px 35px var(--accent-glow);
  filter: brightness(1.1);
  outline: none;
}

.premium-btn:active {
  transform: translateY(-2px) scale(0.98);
}

.btn-small {
  padding: 0.6rem 1.5rem;
  font-size: 0.8rem;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
  padding: 1rem 2rem;
  font-size: 0.9rem;
  margin-top: -0.5rem;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  box-shadow: 0 0 20px rgba(255, 255, 255, 0.1);
}

/* Side Popup */
.side-popup {
  position: absolute;
  top: 50%;
  right: 5%;
  transform: translateY(-50%) translateX(20px);
  width: 400px;
  background: var(--panel-bg);
  backdrop-filter: var(--ui-blur);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 32px;
  padding: 2.5rem;
  z-index: 100;
  display: flex;
  flex-direction: column;
  gap: 2rem;
  opacity: 0;
  pointer-events: none;
  transition: all 0.6s cubic-bezier(0.22, 1, 0.36, 1);
  box-shadow: -20px 0 60px rgba(0, 0, 0, 0.5);
}

.side-popup.active {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(-50%) translateX(0);
}

.popup-title {
  font-size: 1.5rem;
  font-weight: 800;
  margin-top: 0.25rem;
  letter-spacing: 0.05em;
}

.color-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  max-height: 300px;
  overflow-y: auto;
  padding-right: 0.5rem;
}

.color-grid::-webkit-scrollbar {
  width: 4px;
}

.color-grid::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 10px;
}

.color-item {
  aspect-ratio: 1;
  border-radius: 16px;
  cursor: pointer;
  border: 2px solid rgba(255, 255, 255, 0.05);
  transition: all 0.3s ease;
  overflow: hidden;
  box-shadow: inset 0 0 20px rgba(255, 255, 255, 0.05);
}

.grid-category-header {
  grid-column: 1 / -1;
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.25em;
  color: var(--accent-color);
  padding: 1.5rem 0 0.5rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  margin-bottom: 0.5rem;
  text-transform: uppercase;
  opacity: 0.8;
}

.grid-category-header:first-child {
  padding-top: 0;
}

.color-item.locked {
  filter: saturate(0.5) brightness(0.4);
}

.color-item.locked .lock-icon {
  position: absolute;
  font-size: 1rem;
  z-index: 2;
  text-shadow: 0 0 10px rgba(0,0,0,0.5);
}

.color-item.selected {
  border-color: #fff;
  box-shadow: 0 0 15px rgba(255, 255, 255, 0.3);
}

.color-item:hover {
  transform: scale(1.05);
  border-color: rgba(255, 255, 255, 0.2);
}

.lock-icon {
  font-size: 1.25rem;
  opacity: 0.5;
}

.color-details {
  background: rgba(255, 255, 255, 0.03);
  border-radius: 24px;
  padding: 1.5rem;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.details-preview {
  width: 60px;
  height: 60px;
  border-radius: 12px;
  background: #fff;
  display: flex;
  justify-content: center;
  align-items: center;
  box-shadow: 0 0 20px rgba(255, 255, 255, 0.2);
}

#preview-icon {
  width: 30px;
  height: 30px;
  border-radius: 4px;
}

.details-info h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

/* Color Effects */
.effect-pulse {
  animation: colorPulse 2s infinite alternate ease-in-out;
}

.effect-cosmic {
  background: linear-gradient(45deg, var(--c1, #a855f7), var(--c2, #ec4899), var(--c1, #a855f7)) !important;
  background-size: 200% 200% !important;
  animation: cosmicDrift 4s infinite linear;
}

.effect-ultimate {
  animation: ultimateGlow 1.5s infinite alternate ease-in-out, cosmicDrift 2s infinite linear;
  box-shadow: 0 0 30px rgba(255, 255, 255, 0.4) !important;
}

@keyframes colorPulse {
  0% { transform: scale(1); filter: brightness(1); }
  100% { transform: scale(1.1); filter: brightness(1.4) drop-shadow(0 0 10px currentColor); }
}

@keyframes cosmicDrift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

@keyframes ultimateGlow {
  0% { filter: brightness(1) hue-rotate(0deg); }
  100% { filter: brightness(1.5) hue-rotate(360deg); }
}

@media (max-width: 900px) {
  .side-popup {
    width: 90vw;
    right: 5vw;
    top: 10%;
    transform: translateY(0);
    max-height: 80vh;
  }
  
  .side-popup.active {
    transform: translateY(0);
  }
}

/* Pause Button */
.icon-btn {
  background: var(--panel-bg);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  width: 4rem;
  height: 4rem;
  cursor: pointer;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: all 0.3s cubic-bezier(0.22, 1, 0.36, 1);
  pointer-events: auto;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.pause-trigger {
  position: absolute;
  top: var(--ui-spacing);
  right: var(--ui-spacing);
  z-index: 10000;
}

.icon-btn:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--accent-color);
  transform: scale(1.1);
  box-shadow: 0 0 20px var(--accent-glow);
}

.pause-icon {
  width: 14px;
  height: 20px;
  border-left: 5px solid #fff;
  border-right: 5px solid #fff;
}

/* Theme Toggle Switch */
.theme-switch-container {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  background: rgba(255, 255, 255, 0.03);
  padding: 1rem 2rem;
  border-radius: 100px;
  border: 1px solid rgba(255, 255, 255, 0.05);
  margin-top: 0.5rem;
}

.theme-toggle-switch {
  width: 54px;
  height: 28px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 50px;
  position: relative;
  cursor: pointer;
  transition: all 0.3s ease;
}

.theme-toggle-switch:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: var(--accent-color);
}

.switch-handle {
  width: 20px;
  height: 20px;
  background: #fff;
  border-radius: 50%;
  position: absolute;
  top: 3px;
  left: 3px;
  transition: all 0.3s cubic-bezier(0.22, 1, 0.36, 1);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

[data-theme="light"] .theme-toggle-switch {
  background: var(--accent-color);
  border-color: var(--accent-color);
}

[data-theme="light"] .switch-handle {
  left: 29px;
  background: #fff;
}

.theme-label {
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  opacity: 0.5;
  transition: opacity 0.3s ease;
}

[data-theme="dark"] .theme-label:first-child,
[data-theme="light"] .theme-label:last-child {
  opacity: 1;
  color: var(--accent-color);
}

.final-score-container {
  margin: 2rem 0;
  padding: 2.5rem;
  background: rgba(255, 255, 255, 0.03);
  border-radius: 32px;
  border: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.warning-vignette {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  background: radial-gradient(circle, transparent 70%, rgba(239, 68, 68, 0) 100%);
  z-index: 5;
  transition: all 1.2s cubic-bezier(0.22, 1, 0.36, 1);
}

.warning-vignette.active {
  background: radial-gradient(circle, transparent 50%, rgba(239, 68, 68, 0.2) 100%);
  animation: vignettePulse 1s infinite alternate;
}

.warning-vignette.cinematic-active {
  background: radial-gradient(circle, rgba(0, 0, 0, 0.2) 20%, rgba(0, 0, 0, 0.9) 100%);
  backdrop-filter: blur(8px) grayscale(0.5);
  -webkit-backdrop-filter: blur(8px) grayscale(0.5);
  opacity: 1;
}

@keyframes vignettePulse {
  from {
    opacity: 0.4;
  }

  to {
    opacity: 1;
  }
}

#restart-btn {
  animation: neonPulse 2s infinite alternate, fadeInPostDeath 1s ease-out forwards;
  opacity: 0;
  text-shadow: 0 0 10px var(--accent-glow);
  border: 1px solid var(--accent-glow);
}

@keyframes fadeInPostDeath {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes neonPulse {
  from {
    box-shadow: 0 0 10px var(--accent-glow), inset 0 0 5px var(--accent-glow);
    filter: brightness(1);
  }

  to {
    box-shadow: 0 0 30px var(--accent-color), inset 0 0 10px var(--accent-color);
    filter: brightness(1.3);
  }
}

.high-score-label {
  font-size: 0.65rem !important;
  margin-top: 0.4rem;
  opacity: 0.7;
}

.instructions {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.9rem;
  color: var(--text-color);
  opacity: 0.6;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  text-align: center;
  z-index: 1000;
}

/* --- Level Up UI --- */
.levelup-content {
  max-width: 900px;
  width: 95%;
  background: var(--panel-bg);
  backdrop-filter: var(--ui-blur);
  padding: 4rem;
  border-radius: 40px;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.upgrade-cards-container {
  display: flex;
  gap: 1.5rem;
  margin-top: 2rem;
  justify-content: center;
  flex-wrap: wrap;
}

.upgrade-card {
  background: var(--panel-bg);
  backdrop-filter: var(--ui-blur);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 32px;
  padding: 2.5rem;
  width: calc(33.333% - 1.5rem);
  min-width: 240px;
  cursor: pointer;
  transition: all 0.4s cubic-bezier(0.22, 1, 0.36, 1);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.upgrade-card:hover,
.upgrade-card:focus {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--accent-color);
  transform: translateY(-8px);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
  outline: none;
}

.upgrade-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.upgrade-card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
  color: #fff;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.upgrade-card p {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.5;
}

.game-over-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(5, 5, 5, 0.85);
  backdrop-filter: blur(12px);
  display: none;
  justify-content: center;
  align-items: center;
  z-index: 100;
  border-radius: 20px;
}

.game-over-content {
  text-align: center;
}

.game-over-title {
  font-size: clamp(3rem, 10vw, 5rem);
  font-weight: 900;
  color: #ef4444;
  text-shadow: 0 0 40px rgba(239, 68, 68, 0.3);
  margin-bottom: 1rem;
  letter-spacing: -0.04em;
  line-height: 1;
}

.pulse-milestone {
  animation: scorePulse 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

@keyframes scorePulse {
  0% {
    transform: scale(1);
    filter: brightness(1);
  }

  50% {
    transform: scale(1.4);
    filter: brightness(2) drop-shadow(0 0 20px var(--accent-color));
  }

  100% {
    transform: scale(1);
    filter: brightness(1);
  }
}

.accent {
  color: var(--accent-color);
  font-weight: 700;
  text-shadow: 0 0 10px var(--accent-glow);
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

@keyframes slideInLeft {
  from {
    transform: translateX(-30px);
    opacity: 0;
  }

  to {
    transform: translateX(0);
    opacity: 1;
  }
}

@keyframes slideDown {
  from {
    transform: translate(-50%, -30px);
    opacity: 0;
  }

  to {
    transform: translate(-50%, 0);
    opacity: 1;
  }
}

@keyframes pulse {
  0% {
    transform: scale(1);
  }

  50% {
    transform: scale(1.05);
  }

  100% {
    transform: scale(1);
  }
}

/* Mobile Controls */
.joystick-boundary {
  position: absolute;
  bottom: calc(3rem + env(safe-area-inset-bottom));
  left: calc(3rem + env(safe-area-inset-left));
  width: 150px;
  height: 150px;
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.joystick-boundary.active {
  opacity: 1;
  pointer-events: auto;
}

#joystick-base {
  width: 120px;
  height: 120px;
  background: var(--panel-bg);
  backdrop-filter: var(--ui-blur);
  -webkit-backdrop-filter: var(--ui-blur);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  position: relative;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
}

#joystick-knob {
  width: 50px;
  height: 50px;
  background: var(--accent-color);
  border-radius: 50%;
  position: absolute;
  box-shadow: 0 0 20px var(--accent-glow);
  cursor: pointer;
  z-index: 1001;
  border: 2px solid rgba(255, 255, 255, 0.2);
}

.mobile-surge-btn {
  position: absolute;
  bottom: var(--ui-spacing);
  right: var(--ui-spacing);
  width: 100px;
  height: 100px;
  background: var(--panel-bg);
  backdrop-filter: var(--ui-blur);
  -webkit-backdrop-filter: var(--ui-blur);
  border: 1px solid var(--accent-color);
  border-radius: 50%;
  display: none;
  justify-content: center;
  align-items: center;
  z-index: 1000;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.22, 1, 0.36, 1);
}

.mobile-surge-btn:active {
  transform: scale(0.85) !important;
  background: rgba(139, 92, 246, 0.4);
  box-shadow: 0 0 50px var(--accent-color);
}

/* Responsiveness for smaller height screens */
@media (max-height: 500px) {
  .joystick-boundary {
    bottom: 1rem;
    left: 1rem;
    width: 120px;
    height: 120px;
  }

  #joystick-base {
    width: 80px;
    height: 80px;
  }

  #joystick-knob {
    width: 40px;
    height: 40px;
  }

  .mobile-surge-btn {
    bottom: 1.5rem;
    right: 2rem;
    width: 70px;
    height: 70px;
  }
}