/* Global Reset & Base Styling */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
  word-break: keep-all;
}

body {
  font-family: 'OngleipParkDahyeon', 'GangwonEducationModuche', 'Comfortaa', system-ui, -apple-system, sans-serif;
  color: var(--text-main);
  background: linear-gradient(135deg, var(--bg-grad-start) 0%, var(--bg-grad-end) 100%);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow-x: hidden;
  padding: 20px;
  overflow-wrap: break-word;
}

/* Base Wrapper & Card Grid */
.game-container {
  width: 100%;
  max-width: 440px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border-radius: 36px;
  padding: 24px;
  box-shadow: 
    0 20px 40px -15px hsla(28, 30%, 30%, 0.1),
    inset 0 1px 2px 0 rgba(255, 255, 255, 0.8);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  animation: fadeIn 0.8s var(--bounce-elastic);
  position: relative;
}

/* Header Aesthetics */
header {
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

h1 {
  font-family: 'GangwonEducationModuche', 'Comfortaa', sans-serif;
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: -0.5px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

h1 span {
  display: inline-block;
  animation: wave 2.5s infinite ease-in-out;
}

.subtitle {
  font-family: 'GangwonEducationModuche', 'Comfortaa', sans-serif;
  font-size: 0.85rem;
  color: var(--text-sub);
  font-weight: 300;
}

button {
  flex: 1;
  font-family: 'OngleipParkDahyeon', 'Comfortaa', sans-serif;
  font-size: 0.95rem;
  font-weight: 700;
  border: none;
  padding: 14px 20px;
  border-radius: 18px;
  cursor: pointer;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  transition: var(--bounce-elastic);
}

.btn-reset {
  flex: 0 0 42px;
  width: 42px;
  height: 42px;
  padding: 0;
  background: hsla(38, 60%, 98%, 0.74);
  color: var(--text-main);
  border: 1px solid hsla(28, 30%, 75%, 0.3);
  border-radius: 50%;
  font-size: 1.15rem;
  line-height: 1;
  box-shadow: 0 8px 18px -14px hsla(28, 30%, 20%, 0.45);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.btn-reset:hover {
  background: hsla(28, 30%, 75%, 0.28);
  transform: translateY(-1px) rotate(-30deg);
}

.btn-reset:active {
  transform: translateY(1px) rotate(-60deg);
}

/* Footer Styling */
footer {
  font-family: 'GangwonEducationModuche', 'Comfortaa', sans-serif;
  font-size: 0.75rem;
  color: var(--text-sub);
  font-weight: 300;
  text-align: center;
  letter-spacing: 0.2px;
}

.game-meta-row {
  width: 100%;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) 42px;
  align-items: center;
  gap: 8px;
}

.game-meta-row .current-diff-badge {
  justify-self: start;
}

.game-meta-row .hiscore-badge {
  justify-self: center;
}

.game-meta-row .btn-reset {
  justify-self: end;
}

.repository-link {
  color: inherit;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border-radius: 999px;
  transition: var(--bounce-elastic);
}

.repository-link:hover {
  color: var(--text-main);
  background: hsla(28, 30%, 75%, 0.14);
  transform: translateY(-1px);
}

.repository-link:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
}

.repository-icon {
  width: 15px;
  height: 15px;
  fill: currentColor;
  flex: 0 0 auto;
}

/* Crisis Mode Body & Card Modifiers */
body.crisis-mode {
  background: linear-gradient(135deg, hsl(356, 70%, 94%) 0%, hsl(340, 60%, 89%) 100%);
  animation: crisis-bg-pulse 0.9s ease-in-out infinite;
}

body.crisis-mode .game-container {
  border-color: rgba(255, 77, 77, 0.45);
  animation: crisis-card-pulse 0.9s ease-in-out infinite;
}

/* Segmented Difficulty Toggle switch */
.difficulty-toggle {
  display: flex;
  background: hsla(28, 30%, 75%, 0.12);
  border: 1px solid hsla(28, 30%, 75%, 0.25);
  border-radius: 20px;
  padding: 4px;
  width: 100%;
  max-width: 240px;
  margin: 10px auto 0 auto;
  box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.03);
}

.diff-btn {
  flex: 1;
  font-family: 'OngleipParkDahyeon', 'Comfortaa', sans-serif;
  font-size: 0.8rem;
  font-weight: 700;
  border: none;
  padding: 6px 12px;
  border-radius: 16px;
  cursor: pointer;
  background: transparent;
  color: var(--text-sub);
  box-shadow: none;
  transition: var(--bounce-elastic);
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 4px;
}

.diff-btn:hover {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.25);
  transform: scale(1.02);
}

.diff-btn.active {
  background: #FFFFFF;
  color: var(--text-main);
  box-shadow: 
    0 4px 10px -2px rgba(112, 83, 53, 0.12),
    inset 0 1px 1px 0 rgba(255, 255, 255, 0.8);
}

.diff-btn.active#diff-easy {
  color: hsl(145, 55%, 35%);
  background: linear-gradient(180deg, #FFFFFF 0%, hsl(145, 60%, 94%) 100%);
  border: 1px solid hsla(145, 60%, 75%, 0.3);
}

.diff-btn.active#diff-hard {
  color: hsl(356, 85%, 45%);
  background: linear-gradient(180deg, #FFFFFF 0%, hsl(356, 100%, 95%) 100%);
  border: 1px solid hsla(356, 100%, 81%, 0.3);
}

/* Score Badge Styling */
.score-badge {
  font-family: 'GangwonEducationModuche', 'Comfortaa', sans-serif;
  font-size: 0.76rem;
  font-weight: 700;
  color: hsl(43, 85%, 38%);
  background: hsla(43, 100%, 70%, 0.15);
  border: 1.5px solid hsla(43, 100%, 70%, 0.4);
  padding: 3px 9px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  gap: 4px;
  box-shadow: 0 2px 5px rgba(255, 209, 102, 0.12);
  transition: var(--bounce-elastic);
  animation: score-glow 2s infinite ease-in-out alternate;
}

@keyframes score-glow {
  0% {
    box-shadow: 0 0 4px rgba(255, 209, 102, 0.1);
    transform: scale(1.0);
  }
  100% {
    box-shadow: 0 0 10px rgba(255, 209, 102, 0.3);
    transform: scale(1.03);
  }
}

/* ------------------------------------------- */
/* Tip Ticker Panel (Arena top rotating hints)  */
/* ------------------------------------------- */
.arena-hud {
  position: absolute;
  left: 14px;
  right: 14px;
  z-index: 12;
}

.arena-hud-top {
  top: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.arena-hud-bottom {
  bottom: 12px;
  display: block;
}

.tip-ticker {
  background: hsla(38, 60%, 98%, 0.86);
  border: 1.5px solid hsla(43, 85%, 62%, 0.46);
  border-radius: 18px;
  padding: 8px 12px;
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 36px;
  overflow: hidden;
  box-shadow:
    0 10px 24px -18px hsla(28, 30%, 20%, 0.36),
    inset 0 1px 1px rgba(255,255,255,0.78);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  pointer-events: none;
  justify-content: center;
}

.tip-ticker .tip-icon {
  font-size: 1.05rem;
  flex-shrink: 0;
  line-height: 1;
}

.tip-ticker .tip-text {
  font-family: 'GangwonEducationModuche', 'Comfortaa', sans-serif;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.35;
  flex: 0 1 auto;
  animation: tip-slide-in 0.4s ease-out;
  text-align: center;
}

/* ------------------------------------------- */
/* Bad-Ending Overlay                           */
/* ------------------------------------------- */
.bad-ending-overlay {
  position: absolute;
  inset: 0;
  border-radius: 36px;
  background: linear-gradient(160deg, hsla(356, 90%, 12%, 0.92) 0%, hsla(340, 80%, 8%, 0.96) 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  z-index: 100;
  animation: bad-ending-fade 0.7s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
  padding: 30px;
  text-align: center;
}

.bad-ending-overlay .be-emoji {
  font-size: 3.2rem;
  animation: spicy-shudder 0.18s ease-in-out infinite;
}

.bad-ending-overlay .be-title {
  font-family: 'GangwonEducationModuche', 'Comfortaa', sans-serif;
  font-size: 1.6rem;
  font-weight: 700;
  color: hsl(356, 100%, 82%);
  text-shadow: 0 0 20px rgba(255, 80, 80, 0.5);
}

.bad-ending-overlay .be-subtitle {
  font-family: 'GangwonEducationModuche', 'Comfortaa', sans-serif;
  font-size: 0.88rem;
  font-weight: 300;
  color: hsla(356, 60%, 80%, 0.8);
  line-height: 1.5;
  max-width: 260px;
}

.bad-ending-overlay .be-score {
  font-family: 'GangwonEducationModuche', 'Comfortaa', sans-serif;
  font-size: 1.1rem;
  font-weight: 700;
  color: hsl(43, 100%, 72%);
  background: hsla(43, 80%, 50%, 0.12);
  border: 1px solid hsla(43, 80%, 60%, 0.3);
  padding: 6px 18px;
  border-radius: 20px;
}

.bad-ending-overlay .be-btn {
  flex: none;
  margin-top: 6px;
  background: hsl(356, 80%, 55%);
  color: #FFFFFF;
  border: none;
  border-radius: 18px;
  padding: 12px 28px;
  font-family: 'OngleipParkDahyeon', 'Comfortaa', sans-serif;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 8px 20px -6px rgba(220, 60, 60, 0.5);
  transition: transform 0.2s, box-shadow 0.2s;
}

.bad-ending-overlay .be-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 24px -6px rgba(220, 60, 60, 0.65);
}

/* ------------------------------------------- */
/* Current Difficulty Badge (in-game)           */
/* ------------------------------------------- */
.current-diff-badge {
  font-family: 'GangwonEducationModuche', 'Comfortaa', sans-serif;
  font-size: 0.78rem;
  font-weight: 700;
  padding: 5px 11px;
  border-radius: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 32px;
  white-space: nowrap;
}
.current-diff-badge.badge-easy {
  color: hsl(145, 55%, 35%);
  background: linear-gradient(180deg, #FFFFFF 0%, hsl(145, 60%, 94%) 100%);
  border: 1px solid hsla(145, 60%, 75%, 0.4);
}
.current-diff-badge.badge-hard {
  color: hsl(356, 85%, 45%);
  background: linear-gradient(180deg, #FFFFFF 0%, hsl(356, 100%, 95%) 100%);
  border: 1px solid hsla(356, 100%, 81%, 0.4);
}

/* ------------------------------------------- */
/* Intro Modal (Difficulty selection overlay)   */
/* ------------------------------------------- */
.intro-modal-backdrop {
  position: fixed;
  inset: 0;
  background: hsla(28, 30%, 10%, 0.55);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  padding: 20px;
  animation: fadeIn 0.5s ease;
}

.intro-modal-backdrop.hidden {
  display: none;
}

.intro-modal {
  background: linear-gradient(160deg, hsla(38,80%,99%,0.98) 0%, hsla(356,60%,97%,0.98) 100%);
  border: 1px solid rgba(255,255,255,0.9);
  border-radius: 36px;
  padding: 36px 32px 32px;
  width: 100%;
  max-width: 360px;
  text-align: center;
  box-shadow:
    0 30px 60px -20px hsla(28,30%,20%,0.25),
    inset 0 1px 2px rgba(255,255,255,0.9);
  animation: fadeIn 0.5s var(--bounce-elastic);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.intro-hamster-emoji {
  font-size: 3.5rem;
  animation: happy-bounce 0.75s ease-in-out infinite;
  line-height: 1;
  margin-bottom: 2px;
}

.intro-title {
  font-family: 'GangwonEducationModuche', 'Comfortaa', sans-serif;
  font-size: 1.7rem;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: -0.5px;
}

.intro-sub {
  font-family: 'GangwonEducationModuche', 'Comfortaa', sans-serif;
  font-size: 0.88rem;
  font-weight: 300;
  color: var(--text-sub);
  line-height: 1.4;
}

.intro-touch-guide {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: hsla(43, 90%, 78%, 0.18);
  border: 1px solid hsla(43, 85%, 68%, 0.34);
  border-radius: 18px;
  padding: 9px 12px;
  margin-top: 2px;
  font-family: 'GangwonEducationModuche', 'Comfortaa', sans-serif;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.35;
  box-shadow: inset 0 1px 1px rgba(255,255,255,0.7);
}

.intro-touch-icon {
  flex: 0 0 auto;
  font-size: 1.1rem;
  animation: guide-tap 1.6s ease-in-out infinite;
}

.intro-name-group {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin: 10px 0;
  text-align: left;
}

.intro-name-group label {
  font-family: 'GangwonEducationModuche', 'Comfortaa', sans-serif;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-sub);
  padding-left: 4px;
}

.intro-name-group input {
  font-family: 'GangwonEducationModuche', 'Comfortaa', sans-serif;
  font-size: 1.05rem;
  font-weight: bold;
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.65);
  border: 2px solid hsla(28, 30%, 75%, 0.35);
  border-radius: 14px;
  padding: 10px 14px;
  outline: none;
  transition: var(--transition-smooth);
  box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.03);
}

.intro-name-group input:focus {
  background: #FFFFFF;
  border-color: var(--primary);
  box-shadow: 0 0 12px var(--primary-glow);
}

.intro-diff-label {
  font-family: 'GangwonEducationModuche', 'Comfortaa', sans-serif;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text-sub);
  margin-top: 6px;
  text-transform: none;
  letter-spacing: 0.2px;
}

.intro-diff-group {
  display: flex;
  gap: 12px;
  width: 100%;
  margin-top: 4px;
}

.intro-diff-btn {
  flex: 1;
  background: rgba(255,255,255,0.7);
  border: 2px solid hsla(28,30%,75%,0.3);
  border-radius: 22px;
  padding: 18px 10px 16px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  transition: var(--bounce-elastic);
  box-shadow: 0 4px 14px -4px rgba(112,83,53,0.08);
}

.intro-diff-btn:hover {
  transform: translateY(-4px) scale(1.03);
  border-color: hsla(28,50%,65%,0.6);
  box-shadow: 0 10px 24px -6px rgba(112,83,53,0.14);
}

.intro-diff-btn:active {
  transform: translateY(0) scale(0.98);
}

.intro-diff-btn#intro-easy-btn:hover {
  border-color: hsla(145,60%,60%,0.7);
  background: linear-gradient(180deg,#FFF 0%, hsl(145,60%,96%) 100%);
}

.intro-diff-btn#intro-hard-btn:hover {
  border-color: hsla(356,80%,70%,0.7);
  background: linear-gradient(180deg,#FFF 0%, hsl(356,100%,97%) 100%);
}

.intro-diff-icon {
  font-size: 1.6rem;
  line-height: 1;
}

.intro-diff-name {
  font-family: 'OngleipParkDahyeon', 'Comfortaa', sans-serif;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-main);
}

.intro-diff-desc {
  font-family: 'GangwonEducationModuche', 'Comfortaa', sans-serif;
  font-size: 0.74rem;
  font-weight: 300;
  color: var(--text-sub);
  line-height: 1.5;
  text-align: center;
}

/* ------------------------------------------- */
/* Tip-slide keyframe (also used by tip ticker) */
/* ------------------------------------------- */
@keyframes tip-slide-in {
  0%   { opacity: 0; transform: translateY(8px); }
  100% { opacity: 1; transform: translateY(0); }
}

/* ------------------------------------------- */
/* Dust Mote Particle                           */
/* ------------------------------------------- */
.dust-mote {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  z-index: 3;
  will-change: transform, opacity;
  animation: dust-float var(--dust-dur, 1.8s) var(--dust-delay, 0s) ease-out forwards;
}

/* ------------------------------------------- */
/* Good Ending Overlay                          */
/* ------------------------------------------- */
.good-ending-overlay {
  position: absolute;
  inset: 0;
  border-radius: 36px;
  background: linear-gradient(160deg, hsla(43,90%,10%,0.93) 0%, hsla(38,80%,6%,0.97) 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  z-index: 100;
  animation: good-ending-pop 0.7s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
  padding: 30px;
  text-align: center;
}

@media (max-width: 640px) {
  body {
    align-items: flex-start;
    padding: 10px;
  }

  .game-container {
    max-width: 100%;
    border-radius: 28px;
    padding: 18px 12px 16px;
    gap: 12px;
  }

  .btn-reset {
    flex: 0 0 auto;
    width: 46px;
    height: 46px;
    background: hsla(38, 60%, 98%, 0.78);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    box-shadow: 0 10px 22px -14px hsla(28, 30%, 20%, 0.45);
  }

  .game-meta-row {
    grid-template-columns: auto minmax(0, 1fr) 42px;
    gap: 6px;
  }

  .intro-modal {
    max-height: calc(100vh - 32px);
    overflow-y: auto;
    border-radius: 28px;
    padding: 28px 22px 24px;
  }
}

.good-ending-overlay .ge-emoji {
  font-size: 3.4rem;
  animation: happy-bounce 0.7s ease-in-out infinite;
}

.good-ending-overlay .ge-title {
  font-family: 'GangwonEducationModuche', 'Comfortaa', sans-serif;
  font-size: 1.65rem;
  font-weight: 700;
  color: hsl(43, 100%, 78%);
  text-shadow: 0 0 24px rgba(255, 210, 80, 0.6);
}

.good-ending-overlay .ge-subtitle {
  font-family: 'GangwonEducationModuche', 'Comfortaa', sans-serif;
  font-size: 0.88rem;
  font-weight: 300;
  color: hsla(43, 80%, 88%, 0.82);
  line-height: 1.55;
  max-width: 260px;
}

.good-ending-overlay .ge-score {
  font-family: 'GangwonEducationModuche', 'Comfortaa', sans-serif;
  font-size: 1.15rem;
  font-weight: 700;
  color: hsl(43, 100%, 72%);
  background: hsla(43, 80%, 50%, 0.14);
  border: 1.5px solid hsla(43, 80%, 60%, 0.35);
  padding: 6px 20px;
  border-radius: 20px;
}

.good-ending-overlay .ge-hiscore {
  font-family: 'GangwonEducationModuche', 'Comfortaa', sans-serif;
  font-size: 0.82rem;
  font-weight: 700;
  color: hsla(145, 80%, 72%, 0.9);
  background: hsla(145, 60%, 30%, 0.18);
  border: 1px solid hsla(145, 60%, 55%, 0.28);
  padding: 4px 16px;
  border-radius: 14px;
}

.good-ending-overlay .ge-btn {
  flex: none;
  margin-top: 8px;
  background: linear-gradient(135deg, hsl(43, 90%, 55%) 0%, hsl(38, 95%, 60%) 100%);
  color: hsl(28, 45%, 15%);
  border: none;
  border-radius: 18px;
  padding: 12px 30px;
  font-family: 'OngleipParkDahyeon', 'Comfortaa', sans-serif;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 8px 20px -6px rgba(220, 160, 40, 0.55);
  transition: transform 0.2s, box-shadow 0.2s;
}

.good-ending-overlay .ge-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 26px -6px rgba(220, 160, 40, 0.7);
}

/* ------------------------------------------- */
/* High-Score Badge (header area)               */
/* ------------------------------------------- */
.hiscore-badge {
  font-family: 'GangwonEducationModuche', 'Comfortaa', sans-serif;
  font-size: 0.76rem;
  font-weight: 700;
  color: hsl(145, 55%, 35%);
  background: linear-gradient(135deg, hsla(145, 60%, 92%, 0.9) 0%, hsla(43, 80%, 94%, 0.9) 100%);
  border: 1.5px solid hsla(145, 60%, 65%, 0.35);
  padding: 5px 10px;
  border-radius: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  min-height: 32px;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  animation: score-glow 2.5s infinite ease-in-out alternate;
}