/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Plus Jakarta Sans', 'Outfit', system-ui, -apple-system, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

:root {
  /* Dark Theme (Default) */
  --bg-color: hsl(224, 71%, 4%);
  --text-primary: hsl(0, 0%, 100%);
  --text-secondary: hsl(215, 20%, 65%);
  --text-muted: hsl(215, 16%, 47%);
  
  --card-bg: hsla(223, 47%, 11%, 0.65);
  --card-border: hsla(223, 47%, 20%, 0.5);
  --input-bg: hsla(223, 47%, 7%, 0.6);
  --input-border: hsla(223, 47%, 22%, 0.8);
  
  --shadow-lg: 0 20px 40px -15px rgba(0, 0, 0, 0.6);
  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.2);
  --glass-blur: 16px;
  
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 10px;
  
  /* Neon Themes Color tokens (Modified dynamically by data-color-theme) */
  --color-p1: hsl(256, 84%, 64%);     /* Player 1 marker color */
  --color-p1-rgb: 104, 81, 245;
  --color-p2: hsl(172, 80%, 50%);     /* Player 2 / AI marker color */
  --color-p2-rgb: 26, 229, 188;
  
  --danger: hsl(351, 89%, 60%);
  --success: hsl(142, 76%, 45%);
}

[data-theme="light"] {
  /* Light Theme */
  --bg-color: hsl(220, 40%, 96%);
  --text-primary: hsl(224, 71%, 4%);
  --text-secondary: hsl(220, 15%, 40%);
  --text-muted: hsl(220, 10%, 60%);
  
  --card-bg: hsla(0, 0%, 100%, 0.75);
  --card-border: hsla(220, 20%, 85%, 0.7);
  --input-bg: hsl(0, 0%, 100%);
  --input-border: hsl(220, 20%, 82%);
  
  --shadow-lg: 0 20px 40px -15px rgba(0, 0, 0, 0.08);
  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.03);
}

/* Specific theme color overrides */
[data-color-theme="neon"] {
  --color-p1: hsl(256, 84%, 64%);
  --color-p1-rgb: 104, 81, 245;
  --color-p2: hsl(172, 80%, 50%);
  --color-p2-rgb: 26, 229, 188;
}

[data-color-theme="cyber"] {
  --color-p1: hsl(350, 85%, 55%);
  --color-p1-rgb: 242, 38, 79;
  --color-p2: hsl(200, 85%, 55%);
  --color-p2-rgb: 38, 178, 242;
}

[data-color-theme="aurora"] {
  --color-p1: hsl(145, 75%, 48%);
  --color-p1-rgb: 30, 215, 96;
  --color-p2: hsl(272, 75%, 62%);
  --color-p2-rgb: 167, 76, 240;
}

[data-color-theme="royal"] {
  --color-p1: hsl(45, 90%, 52%);
  --color-p1-rgb: 250, 190, 15;
  --color-p2: hsl(215, 85%, 50%);
  --color-p2-rgb: 19, 110, 236;
}

body {
  background-color: var(--bg-color);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  overflow-x: hidden;
  position: relative;
  transition: background-color 0.4s ease, color 0.4s ease;
}

/* Ambient Blobs */
.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  z-index: 0;
  opacity: 0.35;
  pointer-events: none;
  animation: floatBlobs 20s infinite alternate ease-in-out;
}

[data-theme="light"] .blob {
  opacity: 0.15;
}

.blob-1 {
  width: 450px;
  height: 450px;
  background: radial-gradient(circle, var(--color-p1) 0%, transparent 70%);
  top: -100px;
  left: -100px;
}

.blob-2 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, var(--color-p2) 0%, transparent 70%);
  bottom: -150px;
  right: -100px;
  animation-delay: -5s;
}

.blob-3 {
  width: 350px;
  height: 350px;
  background: radial-gradient(circle, var(--color-p1) 0%, transparent 70%);
  top: 40%;
  left: 50%;
  transform: translate(-50%, -50%);
  opacity: 0.15;
  animation-duration: 25s;
}

@keyframes floatBlobs {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(60px, -40px) scale(1.08); }
  100% { transform: translate(-30px, 50px) scale(0.95); }
}

/* Layout */
.app-container {
  width: 100%;
  max-width: 1100px;
  padding: 2rem 1.5rem;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  gap: 2rem;
  z-index: 1;
}

.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--card-border);
  padding-bottom: 1.5rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.logo-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--color-p1) 0%, var(--color-p2) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  box-shadow: 0 8px 16px rgba(var(--color-p1-rgb), 0.25);
  transition: all 0.3s ease;
}

.logo-icon i {
  width: 24px;
  height: 24px;
}

.logo-text h1 {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  line-height: 1.1;
  background: linear-gradient(to right, var(--text-primary), var(--text-muted));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.logo-text h1 span {
  background: linear-gradient(to right, var(--color-p1), var(--color-p2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.logo-text p {
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.header-actions {
  display: flex;
  gap: 0.75rem;
}

/* Button Icon Common style */
.btn-icon {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid var(--card-border);
  background: var(--card-bg);
  backdrop-filter: blur(var(--glass-blur));
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s ease;
}

.btn-icon:hover {
  transform: translateY(-2px);
  border-color: var(--color-p1);
  background: hsla(var(--color-p1-rgb), 0.1);
  color: var(--color-p1);
  box-shadow: 0 0 15px rgba(var(--color-p1-rgb), 0.15);
}

.btn-icon i {
  width: 18px;
  height: 18px;
}

/* Dashboard Content layouts */
.app-content {
  position: relative;
  min-height: 580px;
}

/* SETUP SCREEN PANELS */
.setup-panel {
  display: flex;
  justify-content: center;
  align-items: center;
  animation: fadeIn 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.setup-card {
  width: 100%;
  max-width: 580px;
}

.card-header .subtitle {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 500;
  margin-top: 0.2rem;
}

/* Form Styles */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-secondary);
  letter-spacing: 0.2px;
}

.toggle-buttons-group {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  background-color: var(--input-bg);
  padding: 0.35rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--input-border);
}

.toggle-buttons-group.select-3 {
  grid-template-columns: 1fr 1fr;
}

.btn-toggle {
  background: transparent;
  border: none;
  padding: 0.75rem 1rem;
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 0.9rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: all 0.2s ease;
}

.btn-toggle i {
  width: 16px;
  height: 16px;
}

.btn-toggle.active {
  background-color: var(--card-bg);
  color: var(--text-primary);
  border: 1px solid var(--card-border);
  box-shadow: var(--shadow-sm);
}

/* Player customize input cards */
.players-inputs-container {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.input-card {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--input-border);
  background-color: var(--input-bg);
  transition: border-color 0.25s ease;
}

.input-card:focus-within {
  border-color: var(--color-p1);
}

.input-card#player2-card:focus-within {
  border-color: var(--color-p2);
}

.player-marker {
  font-size: 2.2rem;
  font-weight: 800;
  line-height: 1;
  user-select: none;
  min-width: 40px;
  text-align: center;
}

.marker-x {
  color: var(--color-p1);
  text-shadow: 0 0 15px rgba(var(--color-p1-rgb), 0.4);
}

.marker-o {
  color: var(--color-p2);
  text-shadow: 0 0 15px rgba(var(--color-p2-rgb), 0.4);
}

.input-details {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  flex-grow: 1;
}

.input-details label {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-secondary);
}

.input-details input {
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: 1.1rem;
  font-weight: 700;
  outline: none;
}

/* Theme color picker group */
.theme-picker-group {
  display: flex;
  gap: 1rem;
  padding: 0.25rem;
}

.theme-option {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 3px solid transparent;
  cursor: pointer;
  background: linear-gradient(135deg, var(--c1) 0%, var(--c2) 100%);
  transition: all 0.25s ease;
  position: relative;
}

.theme-option::after {
  content: '';
  position: absolute;
  top: -6px;
  left: -6px;
  right: -6px;
  bottom: -6px;
  border: 2px solid transparent;
  border-radius: 50%;
  transition: all 0.25s ease;
}

.theme-option.active::after {
  border-color: var(--color-p1);
}

.theme-option:hover {
  transform: scale(1.08);
}

/* Primary Button customization */
.btn-primary {
  width: 100%;
  padding: 1.1rem;
  border-radius: var(--radius-md);
  border: none;
  background: linear-gradient(135deg, var(--color-p1) 0%, var(--color-p2) 100%);
  color: white;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.2px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 8px 24px -6px rgba(var(--color-p1-rgb), 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px -4px rgba(var(--color-p1-rgb), 0.45);
  filter: brightness(1.08);
}

.btn-primary:active { transform: translateY(0); }
.btn-primary i { width: 18px; height: 18px; }

/* Secondary button style */
.btn-secondary {
  padding: 1.1rem 1.5rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--card-border);
  background-color: var(--card-bg);
  backdrop-filter: blur(var(--glass-blur));
  color: var(--text-primary);
  font-size: 1rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  cursor: pointer;
  transition: all 0.25s ease;
}

.btn-secondary:hover {
  border-color: var(--text-secondary);
  background: hsla(0, 0%, 100%, 0.05);
}

/* Small Button specs */
.btn-small-text {
  padding: 0.4rem 0.8rem;
  font-size: 0.8rem;
  border-radius: var(--radius-sm);
  background: hsla(var(--color-p1-rgb), 0.1);
  border: 1px solid rgba(var(--color-p1-rgb), 0.3);
  color: var(--color-p1);
  font-weight: 600;
}

.btn-small-text:hover {
  background: var(--color-p1);
  color: white;
}

/* GAME SCREEN LAYOUTS */
.game-panel {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 2rem;
  animation: fadeIn 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.game-main-area {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  align-items: center;
  width: 100%;
}

.game-side-area {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  width: 100%;
}

/* Turn Indicator Bar */
.turn-indicator-bar {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.9rem 1.5rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--card-border);
  background: var(--card-bg);
  backdrop-filter: blur(var(--glass-blur));
}

.player-indicator {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.4rem 1rem;
  border-radius: var(--radius-sm);
  opacity: 0.4;
  transition: all 0.3s ease;
  width: 45%;
}

.player-indicator.active {
  opacity: 1;
  background: hsla(0, 0%, 100%, 0.03);
}

[data-theme="light"] .player-indicator.active {
  background: rgba(0, 0, 0, 0.02);
}

.player-indicator#turn-p1.active {
  box-shadow: inset 0 0 12px rgba(var(--color-p1-rgb), 0.15);
  border: 1px solid rgba(var(--color-p1-rgb), 0.25);
}

.player-indicator#turn-p2.active {
  box-shadow: inset 0 0 12px rgba(var(--color-p2-rgb), 0.15);
  border: 1px solid rgba(var(--color-p2-rgb), 0.25);
}

.ind-marker {
  font-size: 1.5rem;
  font-weight: 800;
  line-height: 1;
}

.ind-name {
  font-size: 0.95rem;
  font-weight: 700;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: var(--text-primary);
}

.turn-divider {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* Game Board Design */
.board-container {
  width: 100%;
  max-width: 420px;
  aspect-ratio: 1 / 1;
}

.board {
  width: 100%;
  height: 100%;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: repeat(3, 1fr);
  gap: 0.8rem;
  position: relative;
}

.cell {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  backdrop-filter: blur(var(--glass-blur));
  cursor: pointer;
  outline: none;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: var(--shadow-sm);
  padding: 1.25rem;
}

.cell:hover {
  transform: translateY(-2px) scale(1.02);
  border-color: hsla(var(--color-p1-rgb), 0.3);
  box-shadow: 0 8px 20px rgba(var(--color-p1-rgb), 0.08);
}

.cell.winning-cell {
  animation: winGlow 1.5s infinite alternate ease-in-out;
  border-color: var(--success);
}

@keyframes winGlow {
  from {
    box-shadow: 0 0 15px rgba(20, 210, 110, 0.2);
    background: hsla(142, 76%, 45%, 0.08);
  }
  to {
    box-shadow: 0 0 25px rgba(20, 210, 110, 0.45);
    background: hsla(142, 76%, 45%, 0.18);
  }
}

/* Markers drawing animations (using inline SVG style loaded by JS) */
.marker-svg {
  width: 100%;
  height: 100%;
  max-width: 68px;
  max-height: 68px;
}

.x-path {
  stroke: var(--color-p1);
  stroke-width: 10px;
  stroke-linecap: round;
  fill: none;
  stroke-dasharray: 100;
  stroke-dashoffset: 100;
  animation: drawStroke 0.35s forwards cubic-bezier(0.16, 1, 0.3, 1);
}

.x-path-2 {
  animation-delay: 0.15s;
}

.o-path {
  stroke: var(--color-p2);
  stroke-width: 10px;
  stroke-linecap: round;
  fill: none;
  stroke-dasharray: 220;
  stroke-dashoffset: 220;
  animation: drawStroke 0.5s forwards cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes drawStroke {
  to {
    stroke-dashoffset: 0;
  }
}

/* Winning SVG Line Overlay */
.win-line-svg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 10;
  display: none; /* hidden unless game is won */
}

.win-line {
  stroke: var(--success);
  stroke-width: 6;
  stroke-linecap: round;
  stroke-dasharray: 140;
  stroke-dashoffset: 140;
  animation: drawStroke 0.6s forwards ease-in-out;
  filter: drop-shadow(0 0 10px rgba(20, 210, 110, 0.6));
}

/* Controls grouping */
.game-controls {
  width: 100%;
  display: flex;
  gap: 1rem;
  max-width: 420px;
}

.flex-grow {
  flex-grow: 1;
}

/* SCOREBOARD PANEL */
.scoreboard-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
}

.score-block {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 0.5rem;
  background: hsla(0, 0%, 100%, 0.02);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-sm);
  text-align: center;
  transition: border-color 0.25s ease;
}

[data-theme="light"] .score-block {
  background: rgba(0, 0, 0, 0.015);
}

.score-label {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  width: 100%;
}

.score-val {
  font-size: 1.6rem;
  font-weight: 800;
  margin-top: 0.25rem;
}

#score-p1-block { border-bottom: 3px solid var(--color-p1); }
#score-p2-block { border-bottom: 3px solid var(--color-p2); }

/* MOVES TIMELINE LOGS */
.timeline-container {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.timeline-status {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-secondary);
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  background: hsla(0, 0%, 100%, 0.03);
  border-left: 3px solid var(--color-p1);
}

.timeline-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  max-height: 200px;
  overflow-y: auto;
  padding-right: 4px;
}

.timeline-list::-webkit-scrollbar {
  width: 4px;
}

.timeline-list::-webkit-scrollbar-track {
  background: transparent;
}

.timeline-list::-webkit-scrollbar-thumb {
  background: var(--card-border);
  border-radius: 10px;
}

.timeline-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.6rem 0.9rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--card-border);
  background: hsla(0, 0%, 100%, 0.015);
  cursor: pointer;
  transition: all 0.2s ease;
  font-size: 0.82rem;
  font-weight: 600;
}

.timeline-item:hover {
  background: hsla(var(--color-p1-rgb), 0.05);
  border-color: rgba(var(--color-p1-rgb), 0.25);
  transform: translateX(2px);
}

.timeline-item.active {
  background: hsla(var(--color-p1-rgb), 0.12);
  border-color: var(--color-p1);
  color: var(--text-primary);
}

.timeline-item-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.timeline-marker {
  font-weight: 800;
  font-size: 0.95rem;
}

.timeline-marker.p1 { color: var(--color-p1); }
.timeline-marker.p2 { color: var(--color-p2); }

.timeline-details {
  color: var(--text-muted);
  font-size: 0.75rem;
}

.timeline-item.active .timeline-details {
  color: var(--text-secondary);
}

/* Card layout helper styles */
.card {
  border-radius: var(--radius-lg);
  border: 1px solid var(--card-border);
  background: var(--card-bg);
  backdrop-filter: blur(var(--glass-blur));
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  transition: border-color 0.3s ease;
}

.card:hover {
  border-color: rgba(var(--color-p1-rgb), 0.2);
}

.card-header {
  padding: 1.5rem 1.5rem 1rem;
  border-bottom: 1px solid var(--card-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.card-header h2 {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.4px;
}

.card-header h3 {
  font-size: 1.1rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.card-header h3 i {
  width: 16px;
  height: 16px;
  color: var(--color-p1);
}

.card-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.btn-text {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.85rem;
  cursor: pointer;
  transition: color 0.2s ease;
}

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

/* Common Helpers */
.hidden {
  display: none !important;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.app-footer {
  text-align: center;
  border-top: 1px solid var(--card-border);
  padding-top: 1.5rem;
  margin-top: auto;
}

.app-footer p {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* Responsive Media Queries */
@media (max-width: 820px) {
  .game-panel {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
}

@media (max-width: 480px) {
  .app-container {
    padding: 1rem;
  }
  
  .card-body {
    padding: 1.2rem;
    gap: 1rem;
  }
  
  .cell {
    border-radius: var(--radius-sm);
  }
  
  .toggle-buttons-group {
    grid-template-columns: 1fr;
  }
  
  .timeline-list {
    max-height: 150px;
  }
}