/* FLAPPY BIRD */

/* CSS Variables */
:root {
  /* Colors */
  --sky-light: #87ceeb;
  --sky-dark: #5ba3c6;
  --grass-green: #7ccd7c;
  --pipe-green: #5dbe5d;
  --bird-yellow: #f7dc6f;
  --bird-orange: #e67e22;
  --ground-brown: #8b5a2b;

  /* UI Colors */
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-tertiary: #334155;
  --bg-card: rgba(30, 41, 59, 0.8);
  --bg-card-hover: rgba(51, 65, 85, 0.9);

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --accent-primary: #fbbf24;
  --accent-secondary: #f59e0b;
  --accent-glow: rgba(251, 191, 36, 0.3);

  --success: #22c55e;
  --danger: #ef4444;

  /* Effects */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 30px var(--accent-glow);

  /* Spacing */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
  --transition-slow: 400ms ease;
}

/* Reset & Base */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  background: linear-gradient(
    135deg,
    var(--bg-primary) 0%,
    #1a1a2e 50%,
    var(--bg-primary) 100%
  );
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
}

/* App container */
.app-container {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
}

/* SVG Animated Scene */
.svg-scene {
  width: 100%;
  height: 280px;
  overflow: hidden;
  position: relative;
  border-bottom: 3px solid var(--grass-green);
  box-shadow: 0 4px 20px rgba(92, 190, 93, 0.3);
  background: linear-gradient(180deg, #87ceeb 0%, #e0f4ff 100%);
}

.scene-svg {
  width: 100%;
  height: 100%;
  display: block;
}

/* Cloud animations */
.cloud-1 {
  animation: floatCloud1 25s ease-in-out infinite;
}

.cloud-2 {
  animation: floatCloud2 30s ease-in-out infinite;
  animation-delay: -10s;
}

.cloud-3 {
  animation: floatCloud3 22s ease-in-out infinite;
  animation-delay: -5s;
}

@keyframes floatCloud1 {
  0%,
  100% {
    transform: translateX(0);
  }
  50% {
    transform: translateX(50px);
  }
}

@keyframes floatCloud2 {
  0%,
  100% {
    transform: translateX(0);
  }
  50% {
    transform: translateX(-40px);
  }
}

@keyframes floatCloud3 {
  0%,
  100% {
    transform: translateX(0);
  }
  50% {
    transform: translateX(30px);
  }
}

/* Flappy Bird animation - fly from far left side of the scene to land on birdhouse platform */
.flappy-bird {
  animation: birdFly 10s ease-in-out infinite;
}

@keyframes birdFly {
  0% {
    transform: translate(0, 0);
  }
  8% {
    transform: translate(70px, -30px);
  }
  16% {
    transform: translate(150px, -10px);
  }
  24% {
    transform: translate(230px, -35px);
  }
  32% {
    transform: translate(320px, -15px);
  }
  40% {
    transform: translate(400px, -40px);
  }
  48% {
    transform: translate(470px, -20px);
  }
  56% {
    transform: translate(530px, -35px);
  }
  64% {
    transform: translate(575px, -15px);
  }
  72% {
    transform: translate(600px, 5px);
  }
  80% {
    transform: translate(605px, 18px);
  }
  88% {
    transform: translate(605px, 23px);
  }
  94% {
    transform: translate(605px, 25px);
  }
  100% {
    transform: translate(605px, 25px);
  }
}

/* Wing flapping - position for new bird location */
.wing {
  transform-origin: 45px 145px;
  animation: wingFlap 0.15s ease-in-out infinite;
}

@keyframes wingFlap {
  0%,
  100% {
    transform: rotate(-15deg);
  }
  50% {
    transform: rotate(20deg);
  }
}

/* Flight path animation */
.flight-path {
  stroke-dashoffset: 0;
  animation: dashMove 3s linear infinite;
}

@keyframes dashMove {
  to {
    stroke-dashoffset: -28;
  }
}

/* Pipe subtle movement */
.pipe-left {
  animation: pipeWobble 4s ease-in-out infinite;
}

.pipe-right {
  animation: pipeWobble 4s ease-in-out infinite;
  animation-delay: -2s;
}

.pipe-third {
  animation: pipeWobble 4s ease-in-out infinite;
  animation-delay: -1s;
}

@keyframes pipeWobble {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(3px);
  }
}

/* Sign heart animation */
.sign-heart {
  animation: signHeartBeat 2s ease-in-out infinite;
  transform-origin: 759px 112px;
}

@keyframes signHeartBeat {
  0%,
  100% {
    transform: scale(1);
  }
  15% {
    transform: scale(1.1);
  }
  30% {
    transform: scale(1);
  }
  45% {
    transform: scale(1.1);
  }
  60% {
    transform: scale(1);
  }
}

/* Candy wiggle animation */
.candy-left {
  animation: candyWiggleLeft 2s ease-in-out infinite;
  transform-origin: 728px 152px;
}

.candy-right {
  animation: candyWiggleRight 2s ease-in-out infinite;
  transform-origin: 782px 152px;
}

@keyframes candyWiggleLeft {
  0%,
  100% {
    transform: rotate(-8deg);
  }
  50% {
    transform: rotate(8deg);
  }
}

@keyframes candyWiggleRight {
  0%,
  100% {
    transform: rotate(8deg);
  }
  50% {
    transform: rotate(-8deg);
  }
}

/* Flowers sway */
.flowers circle:nth-child(odd) {
  animation: flowerSway 3s ease-in-out infinite;
}

.flowers circle:nth-child(even) {
  animation: flowerSway 3s ease-in-out infinite;
  animation-delay: -1.5s;
}

@keyframes flowerSway {
  0%,
  100% {
    transform: rotate(-5deg);
  }
  50% {
    transform: rotate(5deg);
  }
}

/* Sun animations */
.sun {
  animation: sunPulse 4s ease-in-out infinite;
}

@keyframes sunPulse {
  0%,
  100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

.sun-rays {
  animation: sunRaysRotate 20s linear infinite;
  transform-origin: 760px 35px;
}

@keyframes sunRaysRotate {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

.sun-sparkle {
  animation: sparkle 2s ease-in-out infinite;
}

.sun-sparkle-2 {
  animation: sparkle 2s ease-in-out infinite;
  animation-delay: 0.7s;
}

.sun-sparkle-3 {
  animation: sparkle 2s ease-in-out infinite;
  animation-delay: 1.3s;
}

@keyframes sparkle {
  0%,
  100% {
    opacity: 0.3;
    transform: scale(0.8);
  }
  50% {
    opacity: 1;
    transform: scale(1.2);
  }
}

/* game wrapper */
.game-wrapper {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 1.5rem 2rem 1rem;
  max-width: 1400px;
  margin: 0 auto;
  width: 100%;
}

/* header */
.game-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--bg-tertiary);
  margin-bottom: 1.5rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  animation: birdBob 2s ease-in-out infinite;
}

.bird-svg {
  width: 48px;
  height: 42px;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

.logo-wing {
  transform-origin: 16px 22px;
  animation: logoWingFlap 0.2s ease-in-out infinite;
}

@keyframes logoWingFlap {
  0%,
  100% {
    transform: rotate(-10deg);
  }
  50% {
    transform: rotate(15deg);
  }
}

@keyframes birdBob {
  0%,
  100% {
    transform: translateY(0) rotate(-5deg);
  }
  50% {
    transform: translateY(-8px) rotate(5deg);
  }
}

.logo h1 {
  font-family: "Fredoka", sans-serif;
  font-size: 2rem;
  font-weight: 700;
  background: linear-gradient(
    135deg,
    var(--accent-primary) 0%,
    var(--accent-secondary) 100%
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: 0 2px 10px var(--accent-glow);
}

.header-stats {
  display: flex;
  gap: 1rem;
}

.stat-badge {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.2rem;
  background: var(--bg-card);
  border: 1px solid var(--bg-tertiary);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(10px);
  transition: var(--transition-normal);
}

.stat-badge:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent-primary);
  box-shadow: var(--shadow-glow);
}

.stat-icon {
  width: 20px;
  height: 20px;
  color: var(--accent-primary);
}

.high-score-badge .stat-icon {
  animation: starPulse 2s ease-in-out infinite;
}

@keyframes starPulse {
  0%,
  100% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.15);
    opacity: 0.8;
  }
}

.stat-badge span {
  font-family: "Fredoka", sans-serif;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
}

/* main game area */
.game-main {
  display: flex;
  gap: 2rem;
  justify-content: center;
  align-items: flex-start;
  flex: 1;
}

/* Side Panels (left and right) */
.game-panel {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  width: 260px;
  flex-shrink: 0;
}

.game-panel.panel-left {
  order: 1;
}

.game-panel.panel-right {
  order: 3;
}

/* Canvas Container */
.canvas-container {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg), 0 0 0 3px var(--bg-tertiary),
    0 0 60px rgba(251, 191, 36, 0.15);
  transition: var(--transition-normal);
  order: 2;
  transform: scale(1.08);
  margin: 1rem 2rem;
}

.canvas-container:hover {
  transform: scale(1.08) translateY(-4px);
  box-shadow: var(--shadow-lg), 0 0 0 3px var(--accent-primary),
    0 0 80px rgba(251, 191, 36, 0.25);
}

.canvas-glow {
  position: absolute;
  inset: -2px;
  border-radius: var(--radius-xl);
  background: linear-gradient(
    135deg,
    var(--accent-primary),
    var(--pipe-green),
    var(--sky-light)
  );
  opacity: 0;
  z-index: -1;
  transition: var(--transition-normal);
  filter: blur(15px);
}

.canvas-container:hover .canvas-glow {
  opacity: 0.3;
}

#canvas {
  display: block;
  border-radius: var(--radius-xl);
  cursor: pointer;
}

/* Removed old single .game-panel - now using .panel-left and .panel-right */

.panel-card {
  background: var(--bg-card);
  border: 1px solid var(--bg-tertiary);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  backdrop-filter: blur(10px);
  transition: var(--transition-normal);
}

.panel-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(251, 191, 36, 0.3);
  transform: translateX(-4px);
}

.panel-card h2 {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: "Fredoka", sans-serif;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--bg-tertiary);
}

.panel-card h2 svg {
  width: 20px;
  height: 20px;
  color: var(--accent-primary);
}

/* Controls Card */
.control-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.control-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem 0;
}

.key-combo {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.key-or {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
}

kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2rem;
  padding: 0.35rem 0.6rem;
  font-family: "Inter", sans-serif;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-primary);
  background: linear-gradient(
    180deg,
    var(--bg-tertiary) 0%,
    var(--bg-secondary) 100%
  );
  border: 1px solid var(--bg-tertiary);
  border-radius: var(--radius-sm);
  box-shadow: 0 2px 0 var(--bg-primary), inset 0 1px 0 rgba(255, 255, 255, 0.1);
  transition: var(--transition-fast);
}

kbd:hover {
  transform: translateY(1px);
  box-shadow: 0 1px 0 var(--bg-primary), inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.control-action {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.mobile-hint {
  opacity: 0.6;
  border-top: 1px dashed var(--bg-tertiary);
  padding-top: 0.75rem;
  margin-top: 0.25rem;
}

/* Tips Card */
.tips-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.tips-list li {
  position: relative;
  padding-left: 1.25rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.tips-list li::before {
  content: "";
  position: absolute;
  left: 0;
  width: 14px;
  height: 14px;
  background-size: contain;
  background-repeat: no-repeat;
  /* Lightbulb icon */
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23fbbf24' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M9 18h6M10 22h4M12 2a7 7 0 0 0-4 12.7V17h8v-2.3A7 7 0 0 0 12 2z'/%3E%3C/svg%3E");
}

.tips-list li:nth-child(2)::before {
  /* Eye icon */
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23fbbf24' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M1 12s4-8 11-8 11 8 11 8-4 8-11 8-11-8-11-8z'/%3E%3Ccircle cx='12' cy='12' r='3'/%3E%3C/svg%3E");
}
.tips-list li:nth-child(3)::before {
  /* Trending up icon */
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2322c55e' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='23 6 13.5 15.5 8.5 10.5 1 18'/%3E%3Cpolyline points='17 6 23 6 23 12'/%3E%3C/svg%3E");
}
.tips-list li:nth-child(4)::before {
  /* Smiley face icon */
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%238b5cf6' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='12' cy='12' r='10'/%3E%3Cpath d='M8 14s1.5 2 4 2 4-2 4-2'/%3E%3Cline x1='9' y1='9' x2='9.01' y2='9'/%3E%3Cline x1='15' y1='9' x2='15.01' y2='9'/%3E%3C/svg%3E");
}

/* Game Modes Panel */
.modes-card h2 {
  margin-bottom: 1rem;
  font-size: 1.1rem;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.mode-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.mode-btn {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem;
  background: var(--bg-tertiary);
  border: 2px solid transparent;
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.2s ease;
  width: 100%;
  text-align: left;
}

.mode-btn:hover {
  background: var(--bg-secondary);
  border-color: var(--accent-primary);
  transform: translateX(4px);
}

.mode-btn.active {
  background: linear-gradient(
    135deg,
    rgba(59, 130, 246, 0.15),
    rgba(168, 85, 247, 0.15)
  );
  border-color: var(--accent-primary);
  box-shadow: 0 0 15px rgba(59, 130, 246, 0.2);
}

.mode-btn.active .mode-name {
  color: var(--accent-primary);
}

.mode-icon {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-primary);
  border-radius: 8px;
  flex-shrink: 0;
}

.mode-icon svg {
  width: 20px;
  height: 20px;
  color: var(--accent-primary);
}

.mode-btn.active .mode-icon {
  background: linear-gradient(
    135deg,
    var(--accent-primary),
    var(--accent-secondary)
  );
}

.mode-btn.active .mode-icon svg {
  color: var(--bg-primary);
}

.mode-info {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-width: 0;
}

.mode-name {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-primary);
  transition: color 0.2s ease;
}

.mode-desc {
  font-size: 0.75rem;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.mode-btn kbd {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 0.2rem 0.5rem;
  background: var(--bg-primary);
  border: 1px solid var(--bg-tertiary);
  border-radius: 4px;
  color: var(--text-muted);
  flex-shrink: 0;
}

/* Coins Display */
.coins-display {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1rem;
  padding: 0.75rem 1rem;
  background: linear-gradient(
    135deg,
    rgba(234, 179, 8, 0.1),
    rgba(251, 191, 36, 0.15)
  );
  border: 1px solid rgba(234, 179, 8, 0.3);
  border-radius: 10px;
}

.coin-icon {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.coin-icon svg {
  width: 24px;
  height: 24px;
}

.coin-count {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 700;
  color: #fbbf24;
  text-shadow: 0 0 10px rgba(251, 191, 36, 0.5);
}

.coin-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-left: auto;
}

/* Difficulty Selector in Panel */
.difficulty-selector {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--bg-tertiary);
}

.difficulty-selector h3 {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
}

.difficulty-selector h3 svg {
  width: 16px;
  height: 16px;
  opacity: 0.7;
}

.difficulty-pills {
  display: flex;
  gap: 0.5rem;
}

.diff-pill {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  padding: 0.5rem 0.25rem;
  background: var(--bg-tertiary);
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.diff-pill:hover {
  background: var(--bg-card-hover);
  transform: translateY(-2px);
}

.diff-pill.active {
  background: linear-gradient(
    135deg,
    rgba(251, 191, 36, 0.15),
    rgba(245, 158, 11, 0.1)
  );
  border-color: var(--accent-primary);
  box-shadow: 0 0 12px rgba(251, 191, 36, 0.2);
}

.diff-pill .diff-icon {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.diff-pill .diff-icon svg {
  width: 20px;
  height: 20px;
  stroke: var(--text-secondary);
  transition: all var(--transition-fast);
}

.diff-pill:hover .diff-icon svg {
  stroke: var(--text-primary);
}

.diff-pill.active .diff-icon svg {
  stroke: var(--accent-primary);
}

.diff-pill[data-difficulty="easy"].active .diff-icon svg {
  stroke: #22c55e;
}

.diff-pill[data-difficulty="hard"].active .diff-icon svg {
  stroke: #ef4444;
}

.diff-pill .diff-label {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.diff-pill.active .diff-label {
  color: var(--accent-primary);
}

.diff-pill[data-difficulty="easy"]:hover,
.diff-pill[data-difficulty="easy"].active {
  border-color: #22c55e;
}
.diff-pill[data-difficulty="easy"].active {
  background: linear-gradient(
    135deg,
    rgba(34, 197, 94, 0.15),
    rgba(34, 197, 94, 0.1)
  );
  box-shadow: 0 0 12px rgba(34, 197, 94, 0.2);
}
.diff-pill[data-difficulty="easy"].active .diff-label {
  color: #22c55e;
}

.diff-pill[data-difficulty="hard"]:hover,
.diff-pill[data-difficulty="hard"].active {
  border-color: #ef4444;
}
.diff-pill[data-difficulty="hard"].active {
  background: linear-gradient(
    135deg,
    rgba(239, 68, 68, 0.15),
    rgba(239, 68, 68, 0.1)
  );
  box-shadow: 0 0 12px rgba(239, 68, 68, 0.2);
}
.diff-pill[data-difficulty="hard"].active .diff-label {
  color: #ef4444;
}

/* Current Stats Display */
.current-stats {
  margin-top: 1rem;
  padding: 0.75rem;
  background: linear-gradient(
    135deg,
    var(--bg-tertiary),
    rgba(51, 65, 85, 0.5)
  );
  border-radius: var(--radius-md);
  border: 1px solid rgba(148, 163, 184, 0.1);
}

.stat-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.4rem 0;
}

.stat-row:not(:last-child) {
  border-bottom: 1px solid rgba(148, 163, 184, 0.1);
}

.stat-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
}

.stat-label svg {
  width: 14px;
  height: 14px;
  opacity: 0.6;
}

.stat-value {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--accent-primary);
}

.stat-mode {
  font-family: "Fredoka", var(--font-display);
  font-size: 0.85rem;
  color: #3b82f6;
}

/* footer */
.game-footer {
  text-align: center;
  padding-top: 1.5rem;
  margin-top: 1rem;
  border-top: 1px solid var(--bg-tertiary);
}

.game-footer p {
  font-size: 0.9rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
}

.heart-icon {
  width: 18px;
  height: 18px;
  animation: heartBeat 1.5s ease-in-out infinite;
}

@keyframes heartBeat {
  0%,
  100% {
    transform: scale(1);
  }
  14% {
    transform: scale(1.2);
  }
  28% {
    transform: scale(1);
  }
  42% {
    transform: scale(1.2);
  }
  56% {
    transform: scale(1);
  }
}

.tap-icon {
  width: 14px;
  height: 14px;
  margin-right: 4px;
  vertical-align: middle;
}

.game-footer kbd {
  margin: 0 0.25rem;
  font-size: 0.7rem;
  padding: 0.2rem 0.5rem;
}

/* developer attribution */
.lux-attribution {
  text-align: center;
  padding: 1rem 0 0.5rem;
  margin-top: 0.75rem;
}

.lux-attribution p {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.lux-attribution a {
  color: var(--accent-primary);
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition-fast);
  position: relative;
}

.lux-attribution a::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-primary);
  transition: var(--transition-normal);
}

.lux-attribution a:hover {
  color: var(--accent-secondary);
  text-shadow: 0 0 10px var(--accent-glow);
}

.lux-attribution a:hover::after {
  width: 100%;
}

.footer-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.attr-bird-svg {
  width: 28px;
  height: 24px;
  filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.2));
  animation: attrBirdBob 2s ease-in-out infinite;
}

.attr-wing {
  transform-origin: 17px 21px;
  animation: attrWingFlap 0.2s ease-in-out infinite;
}

@keyframes attrBirdBob {
  0%,
  100% {
    transform: translateY(0) rotate(-3deg);
  }
  50% {
    transform: translateY(-3px) rotate(3deg);
  }
}

@keyframes attrWingFlap {
  0%,
  100% {
    transform: rotate(-10deg);
  }
  50% {
    transform: rotate(12deg);
  }
}

.attr-pipe-svg {
  width: 18px;
  height: 28px;
  filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.2));
  animation: attrPipeFloat 3s ease-in-out infinite;
}

@keyframes attrPipeFloat {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-2px);
  }
}

.attr-house-svg {
  width: 26px;
  height: 30px;
  filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.2));
  animation: attrHouseGlow 3s ease-in-out infinite;
}

@keyframes attrHouseGlow {
  0%,
  100% {
    filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.2));
  }
  50% {
    filter: drop-shadow(0 2px 8px rgba(251, 191, 36, 0.4));
  }
}

/* Mobile & Responsive styles */
@media (max-width: 900px) {
  .game-main {
    flex-direction: column;
    align-items: center;
  }

  .game-panel {
    width: 100%;
    max-width: 400px;
    flex-direction: row;
    flex-wrap: wrap;
  }

  .panel-card {
    flex: 1;
    min-width: 180px;
  }

  .panel-card:hover {
    transform: translateY(-4px);
  }
}

@media (max-width: 600px) {
  .svg-scene {
    height: 160px;
  }

  .game-wrapper {
    padding: 1rem;
  }

  .game-header {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }

  .logo h1 {
    font-size: 1.5rem;
  }

  .game-panel {
    flex-direction: column;
  }

  .panel-card {
    min-width: unset;
  }

  .control-item {
    flex-direction: column;
    gap: 0.4rem;
    text-align: center;
  }
}

/* animations & utilities */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.panel-card {
  animation: fadeIn 0.5s ease-out backwards;
}

.panel-card:nth-child(1) {
  animation-delay: 0.1s;
}
.panel-card:nth-child(2) {
  animation-delay: 0.2s;
}

/* Smooth scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--bg-tertiary);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* settings button */
.settings-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: var(--bg-card);
  border: 1px solid var(--bg-tertiary);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition-normal);
}

.settings-btn svg {
  width: 22px;
  height: 22px;
  color: var(--text-secondary);
  transition: var(--transition-normal);
}

.settings-btn:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent-primary);
  transform: rotate(45deg);
}

.settings-btn:hover svg {
  color: var(--accent-primary);
}

/* settings modal */
.settings-modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-normal);
}

.settings-modal.active {
  opacity: 1;
  visibility: visible;
}

.settings-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
}

.settings-panel {
  position: relative;
  width: 90%;
  max-width: 480px;
  max-height: 85vh;
  background: var(--bg-secondary);
  border: 1px solid var(--bg-tertiary);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg), 0 0 60px rgba(0, 0, 0, 0.5);
  overflow: hidden;
  transform: scale(0.9) translateY(20px);
  transition: var(--transition-normal);
}

.settings-modal.active .settings-panel {
  transform: scale(1) translateY(0);
}

.settings-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 1.5rem;
  background: var(--bg-primary);
  border-bottom: 1px solid var(--bg-tertiary);
}

.settings-header h2 {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: "Fredoka", sans-serif;
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}

.settings-header h2 svg {
  width: 24px;
  height: 24px;
  color: var(--accent-primary);
}

.settings-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--bg-tertiary);
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition-fast);
}

.settings-close svg {
  width: 20px;
  height: 20px;
  color: var(--text-secondary);
}

.settings-close:hover {
  background: var(--danger);
}

.settings-close:hover svg {
  color: white;
}

.settings-content {
  padding: 1rem 1.5rem 1.5rem;
  overflow-y: auto;
  max-height: calc(85vh - 70px);
}

/* Settings Sections */
.settings-section {
  margin-bottom: 1.5rem;
}

.settings-section:last-child {
  margin-bottom: 0;
}

.settings-section h3 {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: "Fredoka", sans-serif;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--accent-primary);
  margin-bottom: 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--bg-tertiary);
}

.settings-section h3 svg {
  width: 18px;
  height: 18px;
}

.setting-group {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.setting-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem 0;
}

.setting-row label {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* Difficulty Buttons */
.difficulty-buttons {
  display: flex;
  gap: 0.5rem;
}

.diff-btn {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  padding: 0.75rem 0.5rem;
  background: var(--bg-tertiary);
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-fast);
}

.diff-btn svg {
  width: 24px;
  height: 24px;
}

.diff-btn:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
}

.diff-btn.active {
  background: rgba(251, 191, 36, 0.15);
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}

.diff-btn[data-difficulty="easy"].active {
  background: rgba(34, 197, 94, 0.15);
  border-color: var(--success);
  color: var(--success);
}

.diff-btn[data-difficulty="hard"].active {
  background: rgba(239, 68, 68, 0.15);
  border-color: var(--danger);
  color: var(--danger);
}

/* Toggle Switch */
.toggle-switch {
  position: relative;
  display: inline-block;
  width: 48px;
  height: 26px;
}

.toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-slider {
  position: absolute;
  cursor: pointer;
  inset: 0;
  background: var(--bg-tertiary);
  border-radius: 26px;
  transition: var(--transition-fast);
}

.toggle-slider::before {
  content: "";
  position: absolute;
  height: 20px;
  width: 20px;
  left: 3px;
  bottom: 3px;
  background: var(--text-secondary);
  border-radius: 50%;
  transition: var(--transition-fast);
}

.toggle-switch input:checked + .toggle-slider {
  background: var(--accent-primary);
}

.toggle-switch input:checked + .toggle-slider::before {
  background: white;
  transform: translateX(22px);
}

/* Sliders */
.slider-container {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

input[type="range"] {
  appearance: none;
  -webkit-appearance: none;
  outline: none;
  width: 120px;
  height: 6px;
  background: var(--bg-tertiary);
  border-radius: 3px;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  background: var(--accent-primary);
  border-radius: 50%;
  cursor: pointer;
  transition: var(--transition-fast);
}

input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.15);
  box-shadow: 0 0 10px var(--accent-glow);
}

.slider-value {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent-primary);
  min-width: 40px;
  text-align: right;
}

/* Action Buttons */
.danger-btn,
.secondary-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  width: 100%;
  padding: 0.75rem 1rem;
  border: none;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-fast);
}

.danger-btn {
  background: rgba(239, 68, 68, 0.15);
  color: var(--danger);
  border: 1px solid var(--danger);
}

.danger-btn:hover {
  background: var(--danger);
  color: white;
}

.secondary-btn {
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  border: 1px solid var(--bg-tertiary);
}

.secondary-btn:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
  border-color: var(--text-muted);
}

.danger-btn svg,
.secondary-btn svg {
  width: 18px;
  height: 18px;
}

/* Settings Modal Responsive */
@media (max-width: 600px) {
  .settings-panel {
    width: 95%;
    max-height: 90vh;
  }

  .settings-content {
    max-height: calc(90vh - 70px);
  }

  .difficulty-buttons {
    flex-direction: column;
  }

  .diff-btn {
    flex-direction: row;
    justify-content: center;
  }
}