:root {
  --color-bg-dark: #0f1115;
  --color-bg-gradient: linear-gradient(135deg, #0f1115 0%, #1a1e26 100%);
  --color-panel-glass: rgba(28, 33, 43, 0.75);
  --color-border-glass: rgba(255, 255, 255, 0.08);
  --color-text-primary: #f7fafc;
  --color-text-secondary: #a0aec0;
  --color-gold: #c5a880;
  --color-gold-hover: #dfc59f;
  --color-gold-glow: rgba(197, 168, 128, 0.3);
  --color-jade: #38b2ac;
  --color-jade-dark: #2c7a7b;
  --color-crimson: #e53e3e;
  --color-crimson-dark: #9b2c2c;
  
  --font-serif: "Noto Serif TC", "ZCOOL XiaoWei", Georgia, serif;
  --font-sans: "Outfit", "Inter", -apple-system, sans-serif;
  
  --shadow-premium: 0 20px 40px rgba(0, 0, 0, 0.4);
  --shadow-inset: inset 0 2px 4px rgba(255, 255, 255, 0.05);
  --transition-smooth: all 0.35s cubic-bezier(0.25, 0.8, 0.25, 1);
}

/* Base resets & scrollbars */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--color-bg-dark);
  background-image: var(--color-bg-gradient);
  color: var(--color-text-primary);
  font-family: var(--font-sans);
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
  -webkit-font-smoothing: antialiased;
}

/* Background texture overlay for ink-wash traditional feel */
body::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: radial-gradient(circle at 30% 20%, rgba(197, 168, 128, 0.05) 0%, transparent 40%),
                    radial-gradient(circle at 80% 70%, rgba(56, 178, 172, 0.03) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

/* Scrollbars */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: rgba(0, 0, 0, 0.1);
}
::-webkit-scrollbar-thumb {
  background: rgba(197, 168, 128, 0.3);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(197, 168, 128, 0.5);
}

.app-container {
  max-width: 1200px;
  margin: 0 auto;
  min-height: 100vh;
  padding: 20px;
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
}

/* Screen visibility state machine */
.screen {
  display: none;
  flex-direction: column;
  flex-grow: 1;
  animation: fade-in-screen 0.5s ease forwards;
}
.screen.active {
  display: flex;
}

@keyframes fade-in-screen {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Sound Button style */
.sound-btn {
  position: fixed;
  top: 25px;
  right: 25px;
  z-index: 100;
  background: var(--color-panel-glass);
  border: 1px fill var(--color-border-glass);
  border: 1px solid var(--color-border-glass);
  color: var(--color-gold);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(10px);
  transition: var(--transition-smooth);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}
.sound-btn:hover {
  transform: scale(1.1);
  box-shadow: 0 0 15px var(--color-gold-glow);
  color: var(--color-gold-hover);
}

/* BUTTONS */
.btn {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: 1px;
  padding: 12px 28px;
  border-radius: 12px;
  cursor: pointer;
  transition: var(--transition-smooth);
  border: none;
  outline: none;
  box-shadow: var(--shadow-inset);
}
.btn-primary {
  background: linear-gradient(135deg, var(--color-gold) 0%, #b4956d 100%);
  color: #1a202c;
  box-shadow: 0 4px 15px rgba(197, 168, 128, 0.4);
}
.btn-primary:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(197, 168, 128, 0.6);
  filter: brightness(1.1);
}
.btn-secondary {
  background: var(--color-panel-glass);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border-glass);
}
.btn-secondary:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--color-gold);
  color: var(--color-gold);
}
.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Glassmorphism panel helper */
.glass-panel {
  background: var(--color-panel-glass);
  border: 1px solid var(--color-border-glass);
  border-radius: 20px;
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow-premium), var(--shadow-inset);
}

/* ==========================================================================
   SCREEN 1: HOMEPAGE STYLE
   ========================================================================== */
.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 25px;
  border-bottom: 1px solid var(--color-border-glass);
  padding-bottom: 20px;
}

.header-logo {
  display: flex;
  flex-direction: column;
}
.logo-subtitle {
  font-family: var(--font-serif);
  color: var(--color-gold);
  letter-spacing: 4px;
  font-size: 0.95rem;
  margin-bottom: 4px;
  text-transform: uppercase;
}
.logo-title {
  font-family: var(--font-serif);
  font-size: 2.2rem;
  font-weight: 900;
  background: linear-gradient(135deg, #ffffff 0%, var(--color-gold) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: 2px;
}

.header-stats {
  display: flex;
  gap: 15px;
  background: rgba(0, 0, 0, 0.25);
  padding: 8px 20px;
  border-radius: 15px;
  border: 1px solid rgba(255, 255, 255, 0.03);
}
.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0 10px;
}
.stat-lbl {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  margin-bottom: 2px;
}
.stat-val {
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: 1.15rem;
  color: var(--color-gold);
}

/* Homepage main body: Map at top, Wisdom row at bottom */
.homepage-main {
  display: flex;
  flex-direction: column;
  gap: 30px;
  margin-bottom: 30px;
  flex-grow: 1;
  width: 100%;
}

/* Map Section styling */
.map-section {
  display: flex;
  flex-direction: column;
  height: auto;
  min-height: 520px;
  background: var(--color-panel-glass);
  border: 1px solid var(--color-border-glass);
  border-radius: 24px;
  padding: 20px;
  box-shadow: var(--shadow-premium);
  width: 100%;
  max-width: 780px;
  margin: 0 auto;
}
.section-title {
  font-family: var(--font-serif);
  color: var(--color-gold);
  text-align: center;
  font-size: 1.4rem;
  letter-spacing: 2px;
  margin-bottom: 20px;
}

.scroll-map-container {
  height: 420px;
  overflow-y: auto;
  position: relative;
  border-radius: 12px;
  background: rgba(0, 0, 0, 0.15);
  border: 1px solid rgba(0, 0, 0, 0.2);
}
.scroll-map {
  width: 100%;
  height: 600px;
  position: relative;
  transform-origin: top center;
}

.map-path-svg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

#map-active-path {
  stroke-dashoffset: 1000;
  stroke-dasharray: 1000;
  transition: stroke-dashoffset 2s ease-in-out;
}
#map-active-path.path-completed {
  stroke-dashoffset: 0;
}

.map-node {
  position: absolute;
  transform: translate(-50%, -50%);
  z-index: 2;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.node-circle {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: #2d3748;
  border: 3px solid #4a5568;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-text-secondary);
  transition: var(--transition-smooth);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
}

.node-info {
  position: absolute;
  left: 65px;
  width: 150px;
  background: var(--color-panel-glass);
  border: 1px solid var(--color-border-glass);
  padding: 8px 12px;
  border-radius: 10px;
  box-shadow: 0 4px 15px rgba(0,0,0,0.25);
  pointer-events: none;
  opacity: 0.9;
  transition: var(--transition-smooth);
}
/* Position node-info properly (mostly right side, but can adapt) */
.node-info h3 {
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 2px;
}
.node-status {
  font-size: 0.7rem;
  color: var(--color-text-secondary);
}

/* Pulsing background circle for current active node */
.node-pulse {
  position: absolute;
  width: 66px;
  height: 66px;
  border-radius: 50%;
  background: var(--color-gold-glow);
  opacity: 0;
  animation: pulse-ring 2s infinite;
  pointer-events: none;
  display: none;
}

@keyframes pulse-ring {
  0% { transform: scale(0.85); opacity: 0.8; }
  100% { transform: scale(1.3); opacity: 0; }
}

/* Active Level Node State */
.node-active .node-circle {
  background: linear-gradient(135deg, var(--color-gold) 0%, #a88d66 100%);
  border-color: #fff;
  color: #1a202c;
  box-shadow: 0 0 20px var(--color-gold-glow);
}
.node-active .node-pulse {
  display: block;
}
.node-active .node-info {
  border-color: var(--color-gold);
  opacity: 1;
}
.node-active .node-info .node-status {
  color: var(--color-gold);
  font-weight: bold;
}

/* Completed Level Node State */
.node-completed .node-circle {
  background: linear-gradient(135deg, var(--color-jade) 0%, var(--color-jade-dark) 100%);
  border-color: #e2fbf8;
  color: #fff;
  box-shadow: 0 0 15px rgba(56, 178, 172, 0.3);
}
.node-completed .node-info {
  border-color: var(--color-jade);
}
.node-completed .node-info .node-status {
  color: var(--color-jade);
}

/* Locked Level Node State */
.node-locked {
  cursor: not-allowed;
}
.node-locked .node-circle {
  opacity: 0.6;
}
.node-locked .node-info {
  opacity: 0.5;
}

/* Hover effects for unlocked nodes */
.map-node:not(.node-locked):hover .node-circle {
  transform: scale(1.15);
  box-shadow: 0 0 25px var(--color-gold);
}
.map-node:not(.node-locked):hover .node-info {
  transform: translateX(5px);
  background: rgba(45, 55, 72, 0.95);
}

/* Bottom Row: Wisdom explanations horizontal tray */
.wisdom-row-section {
  display: flex;
  flex-direction: column;
  background: var(--color-panel-glass);
  border: 1px solid var(--color-border-glass);
  border-radius: 24px;
  padding: 20px;
  box-shadow: var(--shadow-premium);
  width: 100%;
  max-width: 1000px;
  margin: 0 auto;
}

.section-header-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 15px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}
.wisdom-tip {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
}

/* Horizontal scroll card list */
.wisdom-horizontal-scroll {
  display: flex;
  flex-direction: row;
  gap: 20px;
  overflow-x: auto;
  overflow-y: hidden;
  padding: 10px 5px 15px 5px;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
}

.wisdom-card {
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-top: 4px solid var(--color-gold);
  border-radius: 12px;
  padding: 18px;
  cursor: pointer;
  transition: var(--transition-smooth);
  display: flex;
  flex-direction: column;
  width: 290px;
  height: 165px;
  flex-shrink: 0;
}
.wisdom-card:hover {
  background: rgba(255, 255, 255, 0.04);
  transform: translateY(-5px);
  border-color: rgba(197, 168, 128, 0.5);
  box-shadow: 0 8px 22px rgba(0, 0, 0, 0.3);
}

.wisdom-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}
.wisdom-card-tag {
  font-size: 0.7rem;
  color: var(--color-gold);
  background: var(--color-gold-glow);
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 600;
  text-transform: uppercase;
}
.wisdom-card-title {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--color-text-primary);
  font-weight: 700;
  margin-bottom: 6px;
}
.wisdom-card-preview {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* App footer styles */
.app-footer {
  text-align: center;
  padding: 15px 0;
  border-top: 1px solid var(--color-border-glass);
}
.app-footer p {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
}

/* ==========================================================================
   SCREEN 2: MATCHMAKING STYLE
   ========================================================================== */
#screen-matchmaking {
  align-items: center;
  justify-content: center;
  min-height: 80vh;
}
.matchmaking-panel {
  width: 100%;
  max-width: 680px;
  padding: 40px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.match-title {
  font-family: var(--font-serif);
  color: var(--color-gold);
  font-size: 1.8rem;
  margin-bottom: 8px;
  letter-spacing: 1px;
}
.match-subtitle {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  margin-bottom: 35px;
}

/* Versus container layout */
.versus-container {
  display: flex;
  align-items: center;
  justify-content: space-around;
  width: 100%;
  margin-bottom: 40px;
}

.vs-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 180px;
  padding: 20px;
  border-radius: 16px;
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.03);
  transition: var(--transition-smooth);
}
.vs-card:hover {
  border-color: rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.02);
}

.avatar-holder {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  margin-bottom: 15px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 20px rgba(0,0,0,0.3);
}

/* Opponent scanning state animations */
.avatar-holder.scanning {
  border: 2px dashed var(--color-gold);
  background: rgba(197, 168, 128, 0.03);
  animation: rotate-border 20s linear infinite;
}
.avatar-holder.scanning svg {
  opacity: 0.35;
  filter: blur(2px) grayscale(100%);
  transition: var(--transition-smooth);
}
.avatar-holder.matched {
  border: 2px solid var(--color-crimson);
  background: transparent;
  animation: matched-bounce 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}
.avatar-holder.matched svg {
  opacity: 1;
  filter: none;
}

@keyframes rotate-border {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}
@keyframes matched-bounce {
  0% { transform: scale(0.6); opacity: 0; }
  80% { transform: scale(1.1); }
  100% { transform: scale(1); opacity: 1; }
}

.scan-line {
  position: absolute;
  width: 100%;
  height: 2px;
  background: linear-gradient(to right, transparent, var(--color-gold), transparent);
  top: 0;
  animation: scan-vertical 2s linear infinite;
  z-index: 10;
  pointer-events: none;
}
.avatar-holder.matched .scan-line {
  display: none;
}

@keyframes scan-vertical {
  0% { top: 0%; opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { top: 100%; opacity: 0; }
}

.vs-name {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.15rem;
  margin-bottom: 4px;
}
.vs-rank {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
}

.vs-badge {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 80px;
  height: 80px;
}
.vs-circle {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-gold) 0%, #8c7250 100%);
  color: #1a202c;
  font-weight: 900;
  font-size: 1.3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-sans);
  z-index: 2;
  box-shadow: 0 4px 15px rgba(197, 168, 128, 0.4);
}
.vs-pulse-ring {
  position: absolute;
  width: 76px;
  height: 76px;
  border-radius: 50%;
  border: 1px solid var(--color-gold);
  animation: pulse-ring 1.8s infinite;
  z-index: 1;
}

/* Matchmaking Status Bar */
.matchmaking-status-bar {
  width: 100%;
  max-width: 400px;
  height: 6px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: 12px;
}
.status-bar-fill {
  width: 10%;
  height: 100%;
  background: var(--color-gold);
  border-radius: 3px;
  transition: width 0.1s linear;
}
.status-text {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
}

/* ==========================================================================
   SCREEN 3: BATTLE ARENA STYLE
   ========================================================================== */
#screen-battle {
  padding: 10px 0;
  gap: 15px;
}

.battle-header {
  padding: 15px 25px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.battle-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.round-indicator {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-gold);
}
.level-theme-tag {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.05);
  padding: 4px 12px;
  border-radius: 12px;
}

.combatants-scores {
  display: grid;
  grid-template-columns: 1fr 180px 1fr;
  align-items: center;
  gap: 20px;
}

.combatant-info {
  display: flex;
  align-items: center;
  gap: 12px;
  position: relative;
}
.combatant-info.opponent {
  justify-content: flex-end;
}
.mini-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  overflow: hidden;
  border: 2px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
  transition: var(--transition-smooth);
}
.combatant-info.player .mini-avatar {
  border-color: var(--color-gold);
}
.combatant-info.opponent .mini-avatar {
  border-color: var(--color-crimson);
}

.combatant-details {
  display: flex;
  flex-direction: column;
}
.combatant-details.text-right {
  text-align: right;
}
.combatant-name {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  margin-bottom: 2px;
}
.combatant-score {
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: 1.6rem;
  color: #fff;
  line-height: 1.1;
  text-shadow: 0 2px 4px rgba(0,0,0,0.5);
}

/* Answer Status Badge */
.ans-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.05);
  padding: 4px 10px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.03);
  font-size: 0.72rem;
  color: var(--color-text-secondary);
  position: absolute;
  bottom: -22px;
}
.combatant-info.player .ans-badge {
  left: 60px;
}
.combatant-info.opponent .ans-badge {
  right: 60px;
  flex-direction: row-reverse;
}
.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #718096;
}
/* Status: Thinking (blinking) */
.ans-badge.thinking .badge-dot {
  background: var(--color-gold);
  animation: dot-blink 1.2s infinite;
}
.ans-badge.thinking {
  color: var(--color-gold);
}
/* Status: Answered */
.ans-badge.answered .badge-dot {
  background: var(--color-jade);
}
.ans-badge.answered {
  color: var(--color-jade);
}

@keyframes dot-blink {
  0%, 100% { opacity: 0.2; }
  50% { opacity: 1; }
}

/* Tug of War Bar */
.tug-of-war-container {
  width: 100%;
  height: 14px;
  background: #2d3748;
  border-radius: 7px;
  position: relative;
  overflow: visible;
  border: 2px solid rgba(0, 0, 0, 0.4);
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.6);
}
.tug-bar-player {
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  background: linear-gradient(to right, #2b6cb0, var(--color-gold));
  border-radius: 5px 0 0 5px;
  transition: width 0.8s cubic-bezier(0.19, 1, 0.22, 1);
}
.tug-bar-opponent {
  position: absolute;
  right: 0;
  top: 0;
  height: 100%;
  background: linear-gradient(to left, var(--color-crimson-dark), var(--color-crimson));
  border-radius: 0 5px 5px 0;
  transition: width 0.8s cubic-bezier(0.19, 1, 0.22, 1);
}
.tug-center-pin {
  position: absolute;
  top: -6px;
  width: 6px;
  height: 22px;
  background: #ffffff;
  border-radius: 3px;
  box-shadow: 0 0 10px #fff, 0 2px 4px rgba(0,0,0,0.8);
  transition: left 0.8s cubic-bezier(0.19, 1, 0.22, 1);
  z-index: 10;
  transform: translateX(-50%);
}

/* Points Popups floating up */
.points-popups-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 20;
}
.points-popup {
  position: absolute;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: 1.6rem;
  opacity: 0;
  transform: translateY(0);
}
.points-popup.player {
  left: 10%;
  color: var(--color-gold);
  text-shadow: 0 0 8px rgba(197, 168, 128, 0.6);
}
.points-popup.opponent {
  right: 10%;
  color: var(--color-crimson);
  text-shadow: 0 0 8px rgba(229, 62, 62, 0.6);
}
.points-popup.animate-rise {
  animation: float-rise 1.5s cubic-bezier(0.25, 1, 0.5, 1) forwards;
}

@keyframes float-rise {
  0% { opacity: 0; transform: translateY(10px) scale(0.8); }
  20% { opacity: 1; transform: translateY(-10px) scale(1.1); }
  80% { opacity: 1; }
  100% { opacity: 0; transform: translateY(-50px) scale(1); }
}

/* Battle main core styles */
.battle-main {
  display: flex;
  flex-direction: column;
  gap: 20px;
  flex-grow: 1;
}

/* Timer area */
.timer-area {
  display: flex;
  align-items: center;
  gap: 15px;
}
.timer-wrapper {
  flex-grow: 1;
  height: 10px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 5px;
  overflow: hidden;
  box-shadow: var(--shadow-inset);
}
.timer-bar {
  width: 100%;
  height: 100%;
  background: linear-gradient(to right, var(--color-jade), #4fd1c5);
  border-radius: 5px;
  transition: width 0.1s linear, background-color 0.3s ease;
}
.timer-bar.critical {
  background: linear-gradient(to right, var(--color-crimson), #fc8181);
}
.timer-number {
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: 1.6rem;
  color: var(--color-gold);
  min-width: 32px;
  text-align: center;
  text-shadow: 0 0 10px rgba(197, 168, 128, 0.2);
}

.double-points-banner {
  background: linear-gradient(90deg, transparent, rgba(197, 168, 128, 0.15) 20%, rgba(197, 168, 128, 0.15) 80%, transparent);
  border-top: 1px solid rgba(197, 168, 128, 0.3);
  border-bottom: 1px solid rgba(197, 168, 128, 0.3);
  color: var(--color-gold);
  text-align: center;
  padding: 8px 0;
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 2px;
  animation: banner-glow 1.5s ease-in-out infinite alternate;
}

@keyframes banner-glow {
  0% { text-shadow: 0 0 4px var(--color-gold-glow); box-shadow: inset 0 0 4px rgba(197,168,128,0.1); }
  100% { text-shadow: 0 0 12px var(--color-gold), 0 0 2px var(--color-gold); box-shadow: inset 0 0 15px rgba(197,168,128,0.2); }
}

/* Question Scenario Card */
.question-container {
  padding: 30px 40px;
  position: relative;
  min-height: 160px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  background-image: linear-gradient(180deg, rgba(28, 33, 43, 0.75) 0%, rgba(20, 24, 30, 0.8) 100%);
}
.question-scenario-label {
  position: absolute;
  top: -11px;
  left: 30px;
  background: var(--color-gold);
  color: #1a202c;
  font-family: var(--font-serif);
  font-size: 0.75rem;
  font-weight: bold;
  padding: 3px 12px;
  border-radius: 4px;
  letter-spacing: 1px;
  box-shadow: 0 2px 5px rgba(0,0,0,0.3);
}
.question-scenario {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  line-height: 1.8;
  color: var(--color-text-primary);
  letter-spacing: 0.5px;
}

/* Option Choice Grid */
.choices-container {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.choice-card {
  display: flex;
  align-items: center;
  padding: 13px 20px;
  background: var(--color-panel-glass);
  border: 1px solid var(--color-border-glass);
  border-radius: 14px;
  color: var(--color-text-primary);
  font-family: var(--font-sans);
  cursor: pointer;
  text-align: left;
  transition: var(--transition-smooth);
  outline: none;
  box-shadow: var(--shadow-inset);
  position: relative;
  overflow: hidden;
}

.choice-letter {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: 0.95rem;
  color: var(--color-gold);
  margin-right: 14px;
  transition: var(--transition-smooth);
}

.choice-text {
  font-size: 1rem;
  line-height: 1.5;
  color: var(--color-text-primary);
  transition: var(--transition-smooth);
  flex-grow: 1;
}

/* HOVER & SELECT STATS */
.choice-card:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.03);
  border-color: rgba(197, 168, 128, 0.4);
  transform: translateY(-2px);
  box-shadow: 0 6px 15px rgba(0,0,0,0.25);
}
.choice-card:hover:not(:disabled) .choice-letter {
  background: var(--color-gold);
  color: #1a202c;
  border-color: var(--color-gold);
  box-shadow: 0 0 8px var(--color-gold-glow);
}

/* Clicked/Selected Choice Card */
.choice-card.selected {
  background: rgba(197, 168, 128, 0.1);
  border-color: var(--color-gold);
  box-shadow: 0 0 15px rgba(197, 168, 128, 0.2);
}
.choice-card.selected .choice-letter {
  background: var(--color-gold);
  color: #1a202c;
  border-color: var(--color-gold);
}

/* Correct Choice Card (revealed at turn end) */
.choice-card.correct-ans {
  background: rgba(56, 178, 172, 0.12) !important;
  border-color: var(--color-jade) !important;
  box-shadow: 0 0 20px rgba(56, 178, 172, 0.3) !important;
}
.choice-card.correct-ans .choice-letter {
  background: var(--color-jade) !important;
  color: #fff !important;
  border-color: var(--color-jade) !important;
}

/* Incorrect Choice Card */
.choice-card.incorrect-ans {
  background: rgba(229, 62, 62, 0.08) !important;
  border-color: var(--color-crimson) !important;
  box-shadow: 0 0 15px rgba(229, 62, 62, 0.2) !important;
}
.choice-card.incorrect-ans .choice-letter {
  background: var(--color-crimson) !important;
  color: #fff !important;
  border-color: var(--color-crimson) !important;
}

/* Other cards when disabled (when input freezes) */
.choice-card:disabled {
  cursor: not-allowed;
  opacity: 0.6;
}

/* Shake Animation for incorrect choices */
.choice-card.shake {
  animation: card-shake 0.4s ease-in-out;
}
@keyframes card-shake {
  0%, 100% { transform: translateX(0); }
  20%, 60% { transform: translateX(-6px); }
  40%, 80% { transform: translateX(6px); }
}

/* Battle Turn Result Overlay */
.turn-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(10, 12, 16, 0.85);
  backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.overlay-content {
  width: 100%;
  max-width: 580px;
  padding: 35px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  background-image: linear-gradient(180deg, rgba(28, 33, 43, 0.9) 0%, rgba(20, 24, 30, 0.95) 100%);
}
.overlay-title {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  color: var(--color-gold);
  margin-bottom: 25px;
}

.overlay-comparison {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  margin-bottom: 30px;
}
.user-ans-show, .opponent-ans-show, .correct-ans-show {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}
.user-ans-show span, .opponent-ans-show span, .correct-ans-show span {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
}

.choice-show-badge {
  width: 50px;
  height: 50px;
  border-radius: 12px;
  background: #2d3748;
  border: 2px solid #4a5568;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--color-text-primary);
}
.choice-show-badge.correct {
  background: rgba(56, 178, 172, 0.2);
  border-color: var(--color-jade);
  color: var(--color-jade);
  box-shadow: 0 0 10px rgba(56,178,172,0.2);
}
.choice-show-badge.incorrect {
  background: rgba(229, 62, 62, 0.2);
  border-color: var(--color-crimson);
  color: var(--color-crimson);
  box-shadow: 0 0 10px rgba(229,62,62,0.2);
}
.vs-arrow {
  color: var(--color-text-secondary);
  font-size: 1.2rem;
  margin-top: 15px;
}

/* Feedback section in turn review */
.overlay-feedback-box {
  width: 100%;
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid rgba(255, 255, 255, 0.03);
  border-radius: 12px;
  padding: 15px 20px;
  margin-bottom: 25px;
  text-align: left;
}
.feedback-avatar {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}
.feedback-avatar span {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  color: var(--color-gold);
  font-weight: 700;
}
.overlay-feedback-text {
  font-family: var(--font-serif);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text-primary);
}

/* ==========================================================================
   SCREEN 4: SUMMARY & REVIEW STYLE
   ========================================================================== */
.summary-panel {
  width: 100%;
  max-width: 780px;
  margin: 30px auto;
  padding: 40px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.summary-badge-wrapper {
  margin-bottom: 15px;
}
.win-loss-badge {
  font-family: var(--font-serif);
  font-size: 2.2rem;
  font-weight: 900;
  width: 100px;
  height: 100px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 10px 25px rgba(0,0,0,0.4);
}
.win-loss-badge.victory {
  background: linear-gradient(135deg, var(--color-gold) 0%, #8c7250 100%);
  color: #1a202c;
  border: 4px solid #fff;
  box-shadow: 0 0 30px var(--color-gold-glow);
  animation: badge-victory-spin 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}
.win-loss-badge.defeat {
  background: linear-gradient(135deg, #4a5568 0%, #1a202c 100%);
  color: var(--color-text-secondary);
  border: 4px solid #718096;
  animation: badge-defeat-drop 0.6s ease-in-out;
}

@keyframes badge-victory-spin {
  0% { transform: scale(0) rotate(-180deg); opacity: 0; }
  100% { transform: scale(1) rotate(0); opacity: 1; }
}
@keyframes badge-defeat-drop {
  0% { transform: translateY(-40px); opacity: 0; }
  100% { transform: translateY(0); opacity: 1; }
}

.summary-headline {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 900;
  color: #fff;
  margin-bottom: 4px;
}
.summary-subline {
  font-size: 0.95rem;
  color: var(--color-gold);
  margin-bottom: 30px;
  letter-spacing: 1px;
}

/* Scoreboard columns inside result */
.summary-scoreboard {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 30px;
  margin-bottom: 35px;
  width: 100%;
}
.score-card {
  width: 180px;
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.03);
  padding: 15px 10px;
  border-radius: 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.avatar-frame {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  margin-bottom: 10px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.3);
}
.sc-name {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  margin-bottom: 6px;
}
.sc-score {
  font-family: var(--font-sans);
  font-size: 2rem;
  font-weight: 800;
  color: #fff;
}
.vs-vs {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  color: var(--color-text-secondary);
  font-weight: 700;
}

/* Score detailed list grid */
.match-stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 15px;
  width: 100%;
  max-width: 540px;
  margin-bottom: 40px;
}
.m-stat-box {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--color-border-glass);
  padding: 12px 10px;
  border-radius: 12px;
  display: flex;
  flex-direction: column;
}
.m-lbl {
  font-size: 0.72rem;
  color: var(--color-text-secondary);
  margin-bottom: 4px;
}
.m-val {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--color-gold);
}

.summary-actions {
  display: flex;
  gap: 15px;
  margin-bottom: 45px;
}

/* Review Section underneath */
.detailed-review-section {
  width: 100%;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 35px;
  text-align: left;
}
.review-title {
  font-family: var(--font-serif);
  color: var(--color-gold);
  text-align: center;
  font-size: 1.25rem;
  margin-bottom: 25px;
}

.review-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.review-card {
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.03);
  border-radius: 14px;
  padding: 20px;
  position: relative;
}
.review-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.03);
  padding-bottom: 8px;
}
.review-card-idx {
  font-family: var(--font-serif);
  font-weight: 700;
  color: var(--color-gold);
  font-size: 1.05rem;
}
.review-card-badge {
  font-size: 0.72rem;
  padding: 3px 8px;
  border-radius: 6px;
  font-weight: 600;
}
.review-card-badge.victory {
  background: rgba(56, 178, 172, 0.15);
  color: var(--color-jade);
  border: 1px solid rgba(56, 178, 172, 0.2);
}
.review-card-badge.defeat {
  background: rgba(229, 62, 62, 0.1);
  color: var(--color-crimson);
  border: 1px solid rgba(229, 62, 62, 0.15);
}

.review-card-scenario {
  font-family: var(--font-serif);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text-primary);
  margin-bottom: 15px;
}

.review-card-answers {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 15px;
  background: rgba(0, 0, 0, 0.15);
  padding: 12px 15px;
  border-radius: 10px;
  font-size: 0.85rem;
  margin-bottom: 15px;
}
.review-ans-row {
  display: flex;
  align-items: center;
  gap: 8px;
}
.review-ans-row .lbl {
  color: var(--color-text-secondary);
}
.review-ans-row .val {
  font-weight: bold;
}
.review-ans-row .val.correct {
  color: var(--color-jade);
}
.review-ans-row .val.incorrect {
  color: var(--color-crimson);
}

.review-card-tip {
  border-left: 3px solid var(--color-gold);
  background: rgba(197, 168, 128, 0.05);
  padding: 10px 15px;
  border-radius: 0 8px 8px 0;
}
.review-card-tip h4 {
  font-family: var(--font-serif);
  font-size: 0.85rem;
  color: var(--color-gold);
  margin-bottom: 4px;
}
.review-card-tip p {
  font-family: var(--font-serif);
  font-size: 0.9rem;
  line-height: 1.5;
  color: var(--color-text-secondary);
}

/* ==========================================================================
   POPUP MODAL: WISDOM DETAILS
   ========================================================================== */
.wisdom-modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(10, 12, 16, 0.85);
  backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.wisdom-modal-content {
  width: 100%;
  max-width: 600px;
  padding: 35px;
  position: relative;
}
.modal-close-btn {
  position: absolute;
  top: 20px;
  right: 20px;
  background: transparent;
  border: none;
  font-size: 1.25rem;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: var(--transition-smooth);
}
.modal-close-btn:hover {
  color: var(--color-gold);
  transform: rotate(90deg);
}

.modal-header {
  margin-bottom: 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  padding-bottom: 15px;
}
.modal-tag {
  font-size: 0.75rem;
  color: var(--color-gold);
  background: var(--color-gold-glow);
  padding: 3px 10px;
  border-radius: 4px;
  font-weight: bold;
}
.modal-title {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  font-weight: 700;
  margin-top: 8px;
}

.modal-body {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 25px;
}
.modal-section h4 {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  color: var(--color-gold);
  margin-bottom: 6px;
}
.modal-section p {
  font-family: var(--font-serif);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text-primary);
}
.modal-section.info-block {
  background: rgba(197, 168, 128, 0.04);
  border-left: 3px solid var(--color-gold);
  padding: 12px 18px;
  border-radius: 0 10px 10px 0;
}
.modal-section.info-block p {
  color: var(--color-text-secondary);
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
}

/* ==========================================================================
   ANIMATIONS HELPERS
   ========================================================================== */
.animate-fade-in {
  animation: fade-in-anim 0.4s ease forwards;
}
.animate-scale-in {
  animation: scale-in-anim 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}

@keyframes fade-in-anim {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes scale-in-anim {
  from { opacity: 0; transform: scale(0.9); }
  to { opacity: 1; transform: scale(1); }
}

/* ==========================================================================
   RESPONSIVE LAYOUT MEDIA QUERIES
   ========================================================================== */
@media (max-width: 900px) {
  .homepage-main {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .map-section {
    height: 520px;
  }
}

@media (max-width: 680px) {
  .app-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 15px;
  }
  .header-stats {
    align-self: stretch;
    justify-content: space-around;
  }
  
  .versus-container {
    flex-direction: column;
    gap: 20px;
  }
  .vs-badge {
    transform: rotate(90deg);
    margin: 10px 0;
  }
  
  .combatants-scores {
    grid-template-columns: 1fr;
    gap: 25px;
  }
  .combatant-info.opponent {
    justify-content: flex-start;
    flex-direction: row-reverse;
  }
  .combatant-details.text-right {
    text-align: left;
  }
  .combatant-info.opponent .ans-badge {
    left: 60px;
    right: auto;
    flex-direction: row;
  }
  .tug-of-war-container {
    width: 80%;
    margin: 0 auto;
  }
  
  .summary-scoreboard {
    flex-direction: column;
    gap: 15px;
  }
  
  .match-stats-grid {
    grid-template-columns: 1fr;
  }
  
  .review-card-answers {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   PHASE 3 ENHANCEMENTS (Help button, title container, and modal tweaks)
   ========================================================================== */
.title-container {
  display: flex;
  align-items: center;
  gap: 15px;
  margin-top: 5px;
  flex-wrap: wrap;
}

.help-btn {
  background: rgba(197, 168, 128, 0.15);
  border: 1px solid rgba(197, 168, 128, 0.4);
  color: var(--color-gold);
  padding: 6px 14px;
  border-radius: 20px;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-smooth);
  display: inline-flex;
  align-items: center;
  gap: 5px;
  outline: none;
}

.help-btn:hover {
  background: var(--color-gold);
  color: #1a202c;
  box-shadow: 0 0 10px var(--color-gold-glow);
  transform: translateY(-1px);
}

@media (max-width: 680px) {
  .title-container {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }
  .help-btn {
    align-self: flex-start;
  }
}