/* GLOBAL STYLING AND THEME CONSTANTS */
:root {
  --transition-speed: 0.3s;
  --border-radius-lg: 16px;
  --border-radius-md: 8px;
  --border-radius-sm: 4px;
  --font-primary: "Outfit", sans-serif;
  --font-heading: "Space Grotesk", sans-serif;
  --font-retro: "Press Start 2P", monospace;
}

/* THEME: DARK (DEEP SPACE) */
.theme-dark {
  --bg-primary: #0a0e17;
  --bg-secondary: rgba(18, 26, 43, 0.7);
  --bg-tertiary: #16223f;
  --color-text: #f0f4f8;
  --color-text-muted: #8fa0b5;
  --color-primary: #3b82f6;
  --color-primary-glow: rgba(59, 130, 246, 0.4);
  --color-secondary: #ec4899;
  --color-secondary-glow: rgba(236, 72, 153, 0.4);
  --color-accent: #10b981;
  --color-accent-glow: rgba(16, 185, 129, 0.4);
  --color-danger: #ef4444;
  --glass-border: rgba(255, 255, 255, 0.08);
  --shadow-main: 0 8px 32px 0 rgba(0, 0, 0, 0.5);
}

/* THEME: LIGHT (CLEAN SLATE) */
.theme-light {
  --bg-primary: #f3f4f6;
  --bg-secondary: rgba(255, 255, 255, 0.85);
  --bg-tertiary: #e5e7eb;
  --color-text: #1f2937;
  --color-text-muted: #4b5563;
  --color-primary: #2563eb;
  --color-primary-glow: rgba(37, 99, 235, 0.2);
  --color-secondary: #db2777;
  --color-secondary-glow: rgba(219, 39, 119, 0.2);
  --color-accent: #059669;
  --color-accent-glow: rgba(5, 150, 105, 0.2);
  --color-danger: #dc2626;
  --glass-border: rgba(0, 0, 0, 0.08);
  --shadow-main: 0 8px 32px 0 rgba(31, 38, 135, 0.08);
}

/* THEME: CYBER PUNK / NEON */
.theme-neon {
  --bg-primary: #05010d;
  --bg-secondary: rgba(15, 2, 28, 0.8);
  --bg-tertiary: #2a0845;
  --color-text: #00ffff;
  --color-text-muted: #bd93f9;
  --color-primary: #00ffff;
  --color-primary-glow: rgba(0, 255, 255, 0.6);
  --color-secondary: #ff007f;
  --color-secondary-glow: rgba(255, 0, 127, 0.6);
  --color-accent: #39ff14;
  --color-accent-glow: rgba(57, 255, 20, 0.6);
  --color-danger: #ff3333;
  --glass-border: rgba(0, 255, 255, 0.2);
  --shadow-main: 0 0 20px rgba(255, 0, 127, 0.3);
}

/* THEME: RETRO ARCADE */
.theme-retro {
  --bg-primary: #000000;
  --bg-secondary: #111111;
  --bg-tertiary: #222222;
  --color-text: #39ff14;
  --color-text-muted: #888888;
  --color-primary: #ff00ff;
  --color-primary-glow: rgba(255, 0, 255, 0.5);
  --color-secondary: #00ffff;
  --color-secondary-glow: rgba(0, 255, 255, 0.5);
  --color-accent: #ffff00;
  --color-accent-glow: rgba(255, 255, 0, 0.5);
  --color-danger: #ff0000;
  --glass-border: #39ff14;
  --shadow-main: 0 0 10px #39ff14;
}

/* CORE STYLING & RESET */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  user-select: none;
  scrollbar-width: thin;
  scrollbar-color: var(--bg-tertiary) var(--bg-primary);
}

body {
  background-color: var(--bg-primary);
  color: var(--color-text);
  font-family: var(--font-primary);
  overflow-x: hidden;
  min-height: 100vh;
  transition:
    background-color var(--transition-speed) ease,
    color var(--transition-speed) ease;
}

/* RETRO FONT SPECIFIC */
.theme-retro body,
.theme-retro h1,
.theme-retro h2,
.theme-retro h3,
.theme-retro h4,
.theme-retro button,
.theme-retro .status-text {
  font-family: var(--font-retro) !important;
  text-transform: uppercase;
}

/* GRID & GLOW EFFECTS */
.grid-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image:
    linear-gradient(rgba(18, 26, 43, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(18, 26, 43, 0.07) 1px, transparent 1px);
  background-size: 40px 40px;
  z-index: -2;
  pointer-events: none;
}

.theme-neon .grid-overlay {
  background-image:
    linear-gradient(rgba(0, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 255, 255, 0.03) 1px, transparent 1px);
}

.glow-orb {
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  z-index: -1;
  pointer-events: none;
  opacity: 0.25;
  transition: all 1s ease;
}

.orb-1 {
  top: -10%;
  right: -10%;
  width: 50vw;
  height: 50vw;
  background: radial-gradient(
    circle,
    var(--color-primary-glow),
    transparent 70%
  );
}

.orb-2 {
  bottom: -10%;
  left: -10%;
  width: 45vw;
  height: 45vw;
  background: radial-gradient(
    circle,
    var(--color-secondary-glow),
    transparent 70%
  );
}

/* CONTAINER LAYOUT */
.app-container {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* HEADER */
.main-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.8rem 0;
  border-bottom: 1px solid var(--glass-border);
}

.logo {
  display: flex;
  align-items: center;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.8rem;
  gap: 0.2rem;
  letter-spacing: -1px;
}

.logo-badge {
  font-size: 0.7rem;
  padding: 0.2rem 0.5rem;
  background-color: var(--color-accent);
  color: #000;
  border-radius: var(--border-radius-sm);
  margin-left: 0.5rem;
  font-family: var(--font-primary);
  font-weight: 600;
}

/* NEON LOGO ACCENTS */
.neon-text-primary {
  color: var(--color-primary);
  text-shadow: 0 0 8px var(--color-primary-glow);
}
.neon-text-secondary {
  color: var(--color-secondary);
  text-shadow: 0 0 8px var(--color-secondary-glow);
}
.neon-text-accent {
  color: var(--color-accent);
  text-shadow: 0 0 8px var(--color-accent-glow);
}

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

/* BUTTONS */
.btn-icon {
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  color: var(--color-text);
  padding: 0.5rem;
  font-size: 1.1rem;
  border-radius: var(--border-radius-md);
  cursor: pointer;
  backdrop-filter: blur(10px);
  transition: all 0.2s ease;
}

.btn-icon:hover {
  transform: translateY(-2px);
  border-color: var(--color-primary);
  box-shadow: 0 0 10px var(--color-primary-glow);
}

.btn-primary {
  background: linear-gradient(
    135deg,
    var(--color-primary),
    var(--color-secondary)
  );
  color: #fff;
  border: none;
  padding: 0.8rem 1.5rem;
  font-family: var(--font-heading);
  font-weight: 700;
  border-radius: var(--border-radius-md);
  cursor: pointer;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  transition: all 0.2s ease;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--color-primary-glow);
}

.btn-secondary {
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  color: var(--color-text);
  padding: 0.8rem 1.5rem;
  font-family: var(--font-heading);
  font-weight: 700;
  border-radius: var(--border-radius-md);
  cursor: pointer;
  transition: all 0.2s ease;
}

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

.btn-secondary-flat {
  background: transparent;
  border: none;
  color: var(--color-text-muted);
  padding: 0.8rem 1.5rem;
  font-family: var(--font-heading);
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s ease;
}

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

.btn-danger {
  background: var(--color-danger);
  color: white;
  border: none;
  padding: 0.8rem 1.5rem;
  font-family: var(--font-heading);
  font-weight: 700;
  border-radius: var(--border-radius-md);
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-danger:hover {
  filter: brightness(1.1);
}

/* HERO SECTION */
.hero-section {
  text-align: center;
  padding: 1.25rem 0;
  max-width: 800px;
  margin: 0 auto;
}

.hero-section h1 {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 2.2rem;
  margin-bottom: 0.5rem;
  background: linear-gradient(
    135deg,
    var(--color-text) 50%,
    var(--color-text-muted)
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-section p {
  color: var(--color-text-muted);
  font-size: 1rem;
  line-height: 1.5;
}

/* MODE SELECTION CARDS */
.mode-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  padding-bottom: 2rem;
}

@media (max-width: 900px) {
  .mode-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 600px) {
  .mode-grid {
    grid-template-columns: 1fr;
  }
}

.mode-card {
  position: relative;
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-lg);
  padding: 1.25rem;
  cursor: pointer;
  overflow: hidden;
  backdrop-filter: blur(10px);
  display: flex;
  flex-direction: column;
  transition:
    transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275),
    border-color 0.3s ease,
    box-shadow 0.3s ease;
}

.mode-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    135deg,
    var(--color-primary-glow),
    transparent 50%
  );
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: 0;
}

.mode-card:hover {
  transform: translateY(-8px);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-main);
}

.mode-card:hover::before {
  opacity: 1;
}

.card-icon {
  font-size: 2.2rem;
  color: var(--color-primary);
  margin-bottom: 1.2rem;
  z-index: 1;
}

.mode-card:nth-child(even) .card-icon {
  color: var(--color-secondary);
}

.mode-card h3 {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  margin-bottom: 0.75rem;
  z-index: 1;
}

.mode-card p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.5;
  margin-bottom: 1.5rem;
  flex-grow: 1;
  z-index: 1;
}

.btn-play-mode {
  background: var(--bg-tertiary);
  border: 1px solid var(--glass-border);
  color: var(--color-text);
  padding: 0.6rem 1.2rem;
  font-family: var(--font-heading);
  font-weight: 700;
  border-radius: var(--border-radius-md);
  cursor: pointer;
  align-self: flex-start;
  transition: all 0.2s ease;
  z-index: 1;
}

.mode-card:hover .btn-play-mode {
  background: linear-gradient(
    135deg,
    var(--color-primary),
    var(--color-secondary)
  );
  border-color: transparent;
  color: white;
  box-shadow: 0 4px 12px var(--color-primary-glow);
}

/* GAMEPLAY VIEW */
.game-section {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding: 0.5rem 0 2rem 0;
}

.game-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.active-mode-badge {
  background: var(--bg-tertiary);
  border: 1px solid var(--glass-border);
  padding: 0.4rem 0.8rem;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--color-accent);
  box-shadow: 0 0 10px var(--color-accent-glow);
}

/* GAMEPLAY GRID/LAYOUT */
.game-layout {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 1.25rem;
  align-items: start;
}

@media (max-width: 900px) {
  .game-layout {
    grid-template-columns: 1fr;
  }
}

/* HUD CARDS */
.game-hud {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.hud-card {
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-lg);
  padding: 1rem;
  backdrop-filter: blur(10px);
}

.scoreboard-card h4 {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  color: var(--color-text-muted);
  letter-spacing: 1px;
  margin-bottom: 0.75rem;
  text-align: center;
}

.score-display {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
}

.player-score {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.6rem;
  border-radius: var(--border-radius-md);
  border: 1px solid transparent;
  transition: all 0.2s ease;
  flex: 1;
}

.player-score.active {
  background: var(--bg-tertiary);
  border-color: var(--color-primary);
}

.player-score.player-o.active {
  border-color: var(--color-secondary);
}

.player-score .avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
}

.player-score.player-x .avatar {
  background: var(--color-primary-glow);
  color: var(--color-primary);
}

.player-score.player-o .avatar {
  background: var(--color-secondary-glow);
  color: var(--color-secondary);
}

.player-info {
  display: flex;
  flex-direction: column;
}

.player-name {
  font-size: 0.7rem;
  color: var(--color-text-muted);
}

.score-num {
  font-size: 1.2rem;
  font-weight: 700;
  font-family: var(--font-heading);
}

.score-divider {
  font-size: 1.2rem;
  font-weight: bold;
  color: var(--color-text-muted);
}

.draw-score {
  text-align: center;
  margin-top: 0.5rem;
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.status-card {
  position: relative;
  overflow: hidden;
  text-align: center;
  padding: 1rem;
}

.status-text {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
}

/* TURN TIMER BAR */
.timer-container {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--bg-tertiary);
}

.timer-bar {
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    var(--color-primary),
    var(--color-secondary)
  );
  transition: width 0.1s linear;
}

/* GAMEBOARD AREA */
.game-board-container {
  display: flex;
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-lg);
  min-height: 380px;
  position: relative;
  overflow: auto;
  backdrop-filter: blur(10px);
  padding: 1rem;
  cursor: grab;
  scrollbar-width: none; /* Firefox */
  -ms-overflow-style: none;  /* IE 10+ */
}

.game-board-container::-webkit-scrollbar {
  display: none; /* Safari and Chrome */
}

.game-board-container:active {
  cursor: grabbing;
}

.board-wrapper {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  flex: 1;
  margin: auto;
  min-width: max-content;
  min-height: max-content;
}

/* CLASSIC / GRAVITY / CHAOS CELL GRIDS */
.ttt-grid {
  display: grid;
  gap: 6px;
  background: var(--glass-border);
  padding: 6px;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-main);
}

.cell {
  width: 90px;
  height: 90px;
  background: var(--bg-primary);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.2rem;
  font-weight: 800;
  font-family: var(--font-heading);
  transition: all 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  position: relative;
}

.cell:hover {
  background: var(--bg-tertiary);
  transform: scale(1.03);
  border-color: var(--color-primary-glow);
}

.cell.occupied {
  cursor: not-allowed;
}

.cell .symbol-x {
  color: var(--color-primary);
  text-shadow: 0 0 12px var(--color-primary-glow);
  animation: pop-in 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.cell .symbol-o {
  color: var(--color-secondary);
  text-shadow: 0 0 12px var(--color-secondary-glow);
  animation: pop-in 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

/* MOBILE AND TABLET BREAKPOINTS */
@media (max-width: 600px) {
  .cell {
    width: 76px;
    height: 76px;
    font-size: 1.8rem;
  }
  .ultimate-cell {
    width: 32px;
    height: 32px;
    font-size: 1rem;
  }
  .ultimate-subboard {
    padding: 4px;
    gap: 2px;
  }
  .game-board-container {
    min-height: 320px;
    padding: 0.5rem;
  }
  .scoreboard-card {
    padding: 0.75rem;
  }
  .score-num {
    font-size: 1.1rem;
  }
  .hud-card {
    padding: 0.75rem;
  }
}

/* ULTIMATE TIC-TAC-TOE */
.ultimate-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  background: var(--glass-border);
  padding: 12px;
  border-radius: var(--border-radius-lg);
}

.ultimate-subboard {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 4px;
  background: rgba(255, 255, 255, 0.02);
  padding: 6px;
  border: 2px solid var(--glass-border);
  border-radius: var(--border-radius-md);
  position: relative;
  transition: all 0.3s ease;
}

.ultimate-subboard.active-target {
  border-color: var(--color-accent);
  box-shadow: 0 0 15px var(--color-accent-glow);
  background: rgba(16, 185, 129, 0.03);
}

.ultimate-subboard.won-x::after,
.ultimate-subboard.won-o::after,
.ultimate-subboard.draw::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  font-weight: 800;
  border-radius: var(--border-radius-sm);
  backdrop-filter: blur(2px);
  z-index: 5;
}

.ultimate-subboard.won-x::after {
  content: "X";
  color: var(--color-primary);
  background: rgba(10, 14, 23, 0.85);
  text-shadow: 0 0 20px var(--color-primary);
}

.ultimate-subboard.won-o::after {
  content: "O";
  color: var(--color-secondary);
  background: rgba(10, 14, 23, 0.85);
  text-shadow: 0 0 20px var(--color-secondary);
}

.ultimate-subboard.draw::after {
  content: "/";
  color: var(--color-text-muted);
  background: rgba(10, 14, 23, 0.85);
}

.ultimate-cell {
  width: 42px;
  height: 42px;
  font-size: 1.3rem;
}

@media (max-width: 480px) {
  .ultimate-cell {
    width: 32px;
    height: 32px;
    font-size: 1.1rem;
  }
  .ultimate-grid {
    gap: 6px;
    padding: 6px;
  }
}

/* INFINITE CANVAS */
.infinite-canvas-viewport {
  width: 100%;
  height: 500px;
  overflow: hidden;
  position: relative;
  cursor: grab;
}

.infinite-canvas-viewport:active {
  cursor: grabbing;
}

.infinite-canvas-board {
  position: absolute;
  top: 50%;
  left: 50%;
  margin-left: -625px;
  margin-top: -625px;
  transform-origin: 50% 50%;
  display: grid;
  will-change: transform;
}

.infinite-cell {
  width: 50px;
  height: 50px;
  border: 1px solid var(--glass-border);
  background: var(--bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  cursor: pointer;
  transition: background-color 0.2s;
}

.infinite-cell:hover {
  background: var(--bg-tertiary);
}

/* ANIMATIONS & EFFECTS */
@keyframes pop-in {
  0% {
    transform: scale(0);
    opacity: 0;
  }
  70% {
    transform: scale(1.1);
  }
  100% {
    transform: scale(1);
    opacity: 1;
  }
}

@keyframes fade-in {
  0% {
    opacity: 0;
    transform: translateY(12px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fade-in 0.4s ease-out;
}

@keyframes fade-out {
  0% {
    opacity: 1;
    transform: scale(1);
  }
  100% {
    opacity: 0.3;
    transform: scale(0.95);
  }
}

.fading-move {
  opacity: 0.45;
}

.critical-fade {
  animation: flash-red 1s infinite alternate;
}

@keyframes flash-red {
  0% {
    opacity: 0.3;
    filter: drop-shadow(0 0 2px var(--color-danger));
  }
  100% {
    opacity: 1;
    filter: drop-shadow(0 0 10px var(--color-danger));
  }
}

/* WINNING LINE HIGHLIGHTS */
.winning-cell {
  background: var(--color-accent-glow) !important;
  border-color: var(--color-accent) !important;
  box-shadow: 0 0 15px var(--color-accent);
}

/* MODALS */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 1;
  transition: opacity 0.2s ease;
}

.modal-card {
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-lg);
  width: 90%;
  max-width: 550px;
  max-height: 85vh;
  overflow-y: auto;
  box-shadow: var(--shadow-main);
  animation: pop-in 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

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

.modal-header h2 {
  font-family: var(--font-heading);
  font-size: 1.4rem;
}

.btn-close-modal {
  background: transparent;
  border: none;
  color: var(--color-text-muted);
  font-size: 1.5rem;
  cursor: pointer;
  transition: color 0.2s;
}

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

.modal-body {
  padding: 1.5rem;
}

/* FORM CONTROLS */
.settings-group {
  margin-bottom: 1.5rem;
}

.settings-group label {
  display: block;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-bottom: 0.5rem;
  font-weight: 600;
}

.form-control {
  width: 100%;
  background: var(--bg-primary);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-md);
  color: var(--color-text);
  padding: 0.75rem;
  font-family: var(--font-primary);
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.2s;
}

.form-control:focus {
  border-color: var(--color-primary);
}

/* TOGGLE SWITCHES */
.toggle-switch-container {
  display: flex;
  background: var(--bg-primary);
  padding: 4px;
  border-radius: var(--border-radius-md);
  border: 1px solid var(--glass-border);
}

.toggle-option {
  flex: 1;
  text-align: center;
  cursor: pointer;
}

.toggle-option input {
  display: none;
}

.toggle-option span {
  display: block;
  padding: 0.5rem;
  border-radius: var(--border-radius-sm);
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  transition: all 0.2s;
}

.toggle-option input:checked + span {
  background: var(--bg-tertiary);
  color: var(--color-text);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

/* CHECKBOXES */
.checkbox-container {
  display: flex;
  align-items: center;
  cursor: pointer;
  font-size: 0.95rem !important;
  position: relative;
  padding-left: 30px;
  margin-top: 0.5rem;
}

.checkbox-container input {
  position: absolute;
  opacity: 0;
  cursor: pointer;
  height: 0;
  width: 0;
}

.checkmark {
  position: absolute;
  top: 0;
  left: 0;
  height: 20px;
  width: 20px;
  background-color: var(--bg-primary);
  border: 1px solid var(--glass-border);
  border-radius: 4px;
  transition: all 0.2s;
}

.checkbox-container:hover input ~ .checkmark {
  border-color: var(--color-primary);
}

.checkbox-container input:checked ~ .checkmark {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
}

.checkmark:after {
  content: "";
  position: absolute;
  display: none;
}

.checkbox-container input:checked ~ .checkmark:after {
  display: block;
}

.checkbox-container .checkmark:after {
  left: 7px;
  top: 3px;
  width: 5px;
  height: 10px;
  border: solid white;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

/* RANGE SLIDER */
.range-container {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 0.5rem;
}

.range-container input[type="range"] {
  flex: 1;
  accent-color: var(--color-primary);
}

/* STATS */
.stats-overview {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-bottom: 2rem;
}

@media (max-width: 480px) {
  .stats-overview {
    grid-template-columns: repeat(2, 1fr);
  }
}

.stat-box {
  background: var(--bg-primary);
  border: 1px solid var(--glass-border);
  padding: 1rem;
  border-radius: var(--border-radius-md);
  text-align: center;
}

.stat-val {
  display: block;
  font-size: 1.5rem;
  font-weight: 700;
  font-family: var(--font-heading);
  color: var(--color-primary);
}

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

.stats-table-container {
  margin-top: 1rem;
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-md);
  overflow: hidden;
}

.stats-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.stats-table th,
.stats-table td {
  padding: 0.75rem 1rem;
  text-align: left;
}

.stats-table th {
  background: var(--bg-tertiary);
  color: var(--color-text-muted);
  font-weight: 600;
}

.stats-table tr {
  border-bottom: 1px solid var(--glass-border);
}

.stats-table tr:last-child {
  border-bottom: none;
}

/* UTILS & TOASTS */
.hidden {
  display: none !important;
}

.toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: var(--bg-secondary);
  border: 1px solid var(--color-accent);
  color: var(--color-text);
  padding: 1rem 1.5rem;
  border-radius: var(--border-radius-md);
  box-shadow: 0 8px 24px var(--color-accent-glow);
  z-index: 1000;
  backdrop-filter: blur(10px);
  animation: pop-in 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.toast.error {
  border-color: var(--color-danger);
  box-shadow: 0 8px 24px rgba(239, 68, 68, 0.2);
}

/* CHAOS LOG STYLING */
.chaos-log-entry {
  font-size: 0.85rem;
  padding: 0.25rem 0;
  border-bottom: 1px solid var(--glass-border);
}
.chaos-log-entry:last-child {
  border-bottom: none;
}
.chaos-title {
  font-weight: bold;
  color: var(--color-accent);
}

/* SIZE-CAPTURE (GOBBLET) MODE PIECES & RESERVE */
.symbol-small {
  font-size: 1.2rem;
  font-weight: 800;
}
.symbol-medium {
  font-size: 2.2rem;
  font-weight: 800;
}
.symbol-large {
  font-size: 3.5rem;
  font-weight: 800;
}

.gobblet-reserve-container {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 1rem;
  padding: 1rem;
  background: var(--bg-primary);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-md);
}

.gobblet-reserve-title {
  font-size: 0.8rem;
  font-weight: bold;
  color: var(--color-text-muted);
  text-transform: uppercase;
}

.gobblet-reserve-row {
  display: flex;
  gap: 1rem;
  align-items: center;
}

.reserve-slot {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  cursor: pointer;
  padding: 0.5rem;
  border-radius: var(--border-radius-md);
  border: 1px solid transparent;
  transition: all 0.2s ease;
}

.reserve-slot:hover {
  background: var(--bg-secondary);
}

.reserve-slot.selected {
  border-color: var(--color-accent);
  background: var(--bg-tertiary);
  box-shadow: 0 0 10px var(--color-accent-glow);
}

.reserve-piece-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
}

.reserve-slot.selected .reserve-piece-icon {
  border-color: var(--color-accent);
}

.reserve-slot[data-player="X"] .reserve-piece-icon {
  color: var(--color-primary);
  text-shadow: 0 0 8px var(--color-primary-glow);
}

.reserve-slot[data-player="O"] .reserve-piece-icon {
  color: var(--color-secondary);
  text-shadow: 0 0 8px var(--color-secondary-glow);
}

.reserve-qty {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  font-weight: 600;
}

/* MEMORY TRAINER MODE */
.memory-flash {
  background: var(--color-primary) !important;
  box-shadow: 0 0 20px var(--color-primary-glow) !important;
  transform: scale(1.1);
  transition: all 0.1s ease;
}

.memory-success {
  background: var(--color-accent) !important;
  box-shadow: 0 0 20px var(--color-accent-glow) !important;
}

.memory-error {
  background: var(--color-danger) !important;
  box-shadow: 0 0 20px rgba(239, 68, 68, 0.5) !important;
}

/* CUSTOM SCROLLBAR */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: var(--bg-tertiary);
  border-radius: var(--border-radius-sm);
  border: 2px solid var(--bg-primary);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--color-primary);
}