@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

:root {
  --primary: #6c47ff;
  --primary-hover: #5835df;
  --secondary: #ff6b35;
  --secondary-hover: #e55a27;
  
  --bg-color: #f8f9fa;
  --card-bg: #ffffff;
  --text-color: #1f2937;
  --text-muted: #6b7280;
  --border-color: #e5e7eb;
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -2px rgba(0, 0, 0, 0.02);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --font: 'Inter', system-ui, -apple-system, sans-serif;
  --container-width: 1200px;
}

body.dark-theme {
  --bg-color: #0f0c1b;
  --card-bg: #17142b;
  --text-color: #f3f4f6;
  --text-muted: #9ca3af;
  --border-color: #2d294a;
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -2px rgba(0, 0, 0, 0.25);
}

/* Base Styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font);
  background-color: var(--bg-color);
  color: var(--text-color);
  transition: background-color 0.3s ease, color 0.3s ease;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  text-decoration: none;
  color: inherit;
}

/* Navbar */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--card-bg);
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow);
  height: 70px;
  transition: var(--transition);
}

.nav-container {
  max-width: var(--container-width);
  margin: 0 auto;
  height: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 20px;
}

.logo {
  font-size: 24px;
  font-weight: 800;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo span {
  color: var(--secondary);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 15px;
}

.btn-theme {
  background: none;
  border: 1px solid var(--border-color);
  color: var(--text-color);
  font-size: 20px;
  cursor: pointer;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.btn-theme:hover {
  background-color: var(--border-color);
}

.btn-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  color: var(--primary);
  transition: var(--transition);
}

.btn-back:hover {
  color: var(--primary-hover);
  transform: translateX(-4px);
}

/* Hero Section */
.hero {
  text-align: center;
  padding: 60px 20px;
  background: linear-gradient(135deg, rgba(108, 71, 255, 0.08) 0%, rgba(255, 107, 53, 0.08) 100%);
  border-bottom: 1px solid var(--border-color);
}

.hero h1 {
  font-size: 48px;
  font-weight: 800;
  margin-bottom: 12px;
  letter-spacing: -1px;
}

.hero h1 span {
  background: linear-gradient(90deg, var(--primary) 0%, var(--secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p {
  color: var(--text-muted);
  font-size: 18px;
  font-weight: 400;
  max-width: 600px;
  margin: 0 auto;
}

/* Filter Controls */
.filters-container {
  max-width: var(--container-width);
  margin: 30px auto 0 auto;
  padding: 0 20px;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
}

.btn-filter {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  color: var(--text-color);
  padding: 8px 18px;
  border-radius: 20px;
  cursor: pointer;
  font-weight: 600;
  font-size: 14px;
  transition: var(--transition);
}

.btn-filter:hover, .btn-filter.active {
  background-color: var(--primary);
  border-color: var(--primary);
  color: #ffffff;
  box-shadow: 0 4px 10px rgba(108, 71, 255, 0.3);
}

/* Ads Placeholders */
.ad-container {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 20px;
  margin: 20px auto;
  background: rgba(108, 71, 255, 0.03);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-md);
  max-width: var(--container-width);
  min-height: 90px;
  font-size: 12px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* Game Grid */
.game-grid-section {
  max-width: var(--container-width);
  margin: 20px auto 40px auto;
  padding: 0 20px;
  flex-grow: 1;
}

.game-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 24px;
}

.game-card {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.game-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary) 0%, var(--secondary) 100%);
  opacity: 0;
  transition: var(--transition);
}

.game-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

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

.game-card-emoji {
  font-size: 48px;
  margin-bottom: 16px;
  background: linear-gradient(135deg, rgba(108, 71, 255, 0.1) 0%, rgba(255, 107, 53, 0.1) 100%);
  width: 90px;
  height: 90px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.game-card:hover .game-card-emoji {
  transform: scale(1.1);
}

.game-card-category {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--secondary);
  letter-spacing: 1px;
  margin-bottom: 8px;
}

.game-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}

.game-card p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 20px;
  flex-grow: 1;
}

.btn-play {
  background-color: var(--primary);
  color: #ffffff;
  border: none;
  padding: 10px 24px;
  border-radius: 20px;
  font-weight: 700;
  font-size: 14px;
  cursor: pointer;
  transition: var(--transition);
  width: 100%;
}

.btn-play:hover {
  background-color: var(--primary-hover);
  box-shadow: 0 4px 12px rgba(108, 71, 255, 0.3);
}

/* Game Detail Page Layout */
.game-container {
  max-width: 800px;
  margin: 30px auto;
  padding: 0 20px;
  flex-grow: 1;
}

.game-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 15px;
}

.game-title-area h2 {
  font-size: 32px;
  font-weight: 800;
  margin-bottom: 4px;
}

.game-title-area span {
  font-size: 12px;
  text-transform: uppercase;
  color: var(--secondary);
  font-weight: 700;
  letter-spacing: 1.5px;
}

.game-stats {
  display: flex;
  gap: 15px;
}

.stat-box {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  padding: 10px 18px;
  border-radius: var(--radius-md);
  text-align: center;
  min-width: 90px;
  box-shadow: var(--shadow);
}

.stat-label {
  font-size: 10px;
  color: var(--text-muted);
  text-transform: uppercase;
  font-weight: 700;
  margin-bottom: 2px;
}

.stat-val {
  font-size: 18px;
  font-weight: 800;
  color: var(--primary);
}

.game-workspace {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
  overflow: hidden;
  margin-bottom: 20px;
  min-height: 400px;
  justify-content: center;
}

.game-workspace canvas {
  background-color: #111;
  border-radius: var(--radius-md);
  max-width: 100%;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
  display: block;
}

.game-controls {
  display: flex;
  gap: 15px;
  margin-top: 20px;
  width: 100%;
  justify-content: center;
}

.btn-control {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  color: var(--text-color);
  padding: 10px 20px;
  border-radius: 20px;
  font-weight: 700;
  font-size: 14px;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 8px;
}

.btn-control:hover {
  background-color: var(--border-color);
}

.btn-restart {
  background-color: var(--secondary);
  color: #ffffff;
  border: none;
}

.btn-restart:hover {
  background-color: var(--secondary-hover);
  box-shadow: 0 4px 12px rgba(255, 107, 53, 0.3);
}

.game-instructions {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
  margin-top: 30px;
  box-shadow: var(--shadow);
}

.game-instructions h4 {
  font-size: 18px;
  margin-bottom: 12px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
}

.game-instructions p, .game-instructions ul {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
}

.game-instructions ul {
  padding-left: 20px;
}

/* Footer */
footer {
  background-color: var(--card-bg);
  border-top: 1px solid var(--border-color);
  padding: 24px 20px;
  text-align: center;
  color: var(--text-muted);
  font-size: 14px;
  margin-top: auto;
}

/* ==========================================================================
   GAME SPECIFIC UI LAYOUTS (Shared via style.css for Premium Look)
   ========================================================================== */

/* 2048 Grid */
.grid-2048 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  background-color: #bbada0;
  padding: 12px;
  border-radius: var(--radius-md);
  width: 320px;
  height: 320px;
  max-width: 100%;
}
.cell-2048 {
  background-color: rgba(238, 228, 218, 0.35);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  font-weight: 800;
  color: #776e65;
  transition: transform 0.1s ease, background-color 0.1s ease;
  user-select: none;
}
.tile-2 { background: #eee4da; color: #776e65; }
.tile-4 { background: #ede0c8; color: #776e65; }
.tile-8 { background: #f2b179; color: #f9f6f2; }
.tile-16 { background: #f59563; color: #f9f6f2; }
.tile-32 { background: #f67c5f; color: #f9f6f2; }
.tile-64 { background: #f65e3b; color: #f9f6f2; }
.tile-128 { background: #edcf72; color: #f9f6f2; font-size: 20px; }
.tile-256 { background: #edcc61; color: #f9f6f2; font-size: 20px; }
.tile-512 { background: #edc850; color: #f9f6f2; font-size: 20px; }
.tile-1024 { background: #edc53f; color: #f9f6f2; font-size: 16px; }
.tile-2048 { background: #edc22e; color: #f9f6f2; font-size: 16px; }

/* Memory Match */
.grid-memory {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  width: 340px;
  max-width: 100%;
}
.card-memory {
  aspect-ratio: 1;
  background-color: var(--primary);
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  user-select: none;
  transform-style: preserve-3d;
  transition: transform 0.3s ease, background-color 0.3s ease;
  box-shadow: var(--shadow);
}
.card-memory.flipped {
  background-color: var(--card-bg);
  border: 2px solid var(--primary);
  transform: rotateY(180deg);
}
.card-memory.matched {
  background-color: #2e7d32;
  border-color: #2e7d32;
  cursor: default;
}

/* Whack-a-Mole */
.grid-mole {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 15px;
  width: 340px;
  max-width: 100%;
}
.hole-mole {
  aspect-ratio: 1;
  background-color: #8d6e63;
  border-radius: 50%;
  border: 6px solid #4e342e;
  position: relative;
  overflow: hidden;
  box-shadow: inset 0 8px 16px rgba(0,0,0,0.5);
  cursor: pointer;
}
.mole {
  width: 80%;
  height: 80%;
  background-color: #b0bec5;
  border-radius: 50% 50% 0 0;
  position: absolute;
  bottom: -100%;
  left: 10%;
  transition: bottom 0.15s ease-out;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 36px;
}
.mole.up {
  bottom: 0;
}

/* Tic Tac Toe Grid */
.grid-ttt {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  width: 300px;
  max-width: 100%;
}
.cell-ttt {
  aspect-ratio: 1;
  background-color: var(--card-bg);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 48px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
  user-select: none;
}
.cell-ttt:hover {
  background-color: var(--border-color);
}
.cell-ttt.x { color: var(--primary); }
.cell-ttt.o { color: var(--secondary); }

/* Minesweeper Grid */
.grid-mines {
  display: grid;
  grid-template-columns: repeat(9, 1fr);
  gap: 3px;
  background-color: var(--border-color);
  padding: 5px;
  border-radius: var(--radius-sm);
  width: 320px;
  max-width: 100%;
  user-select: none;
}
.cell-mines {
  aspect-ratio: 1;
  background-color: var(--card-bg);
  border-radius: 2px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 800;
  cursor: pointer;
  transition: var(--transition);
}
.cell-mines:hover {
  background-color: var(--border-color);
}
.cell-mines.revealed {
  background-color: rgba(108, 71, 255, 0.05);
  cursor: default;
}
.cell-mines.mine {
  background-color: var(--secondary);
}
.cell-mines.flagged::after {
  content: '🚩';
}

/* Sudoku Grid */
.grid-sudoku {
  display: grid;
  grid-template-columns: repeat(9, 1fr);
  width: 360px;
  height: 360px;
  max-width: 100%;
  border: 3px solid var(--text-color);
  background-color: var(--text-color);
  gap: 1px;
}
.cell-sudoku {
  background-color: var(--card-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}
.cell-sudoku input {
  width: 100%;
  height: 100%;
  border: none;
  background: transparent;
  text-align: center;
  font-size: 18px;
  font-weight: 700;
  color: var(--text-color);
  outline: none;
}
.cell-sudoku input:focus {
  background-color: rgba(108, 71, 255, 0.15);
}
.cell-sudoku.original input {
  color: var(--primary);
  font-weight: 800;
}
.cell-sudoku.error input {
  background-color: rgba(255, 107, 53, 0.2);
  color: #ff3333;
}
/* Borders for 3x3 zones */
.cell-sudoku:nth-child(3n) {
  border-right: 2px solid var(--text-color);
}
.cell-sudoku:nth-child(9n) {
  border-right: none;
}
.grid-sudoku > div:nth-child(n+19):nth-child(-n+27),
.grid-sudoku > div:nth-child(n+46):nth-child(-n+54) {
  border-bottom: 2px solid var(--text-color);
}

/* Word Search Grid */
.grid-wordsearch {
  display: grid;
  grid-template-columns: repeat(10, 1fr);
  gap: 4px;
  width: 340px;
  max-width: 100%;
  user-select: none;
  background-color: var(--border-color);
  padding: 6px;
  border-radius: var(--radius-sm);
}
.cell-ws {
  aspect-ratio: 1;
  background-color: var(--card-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  border-radius: 3px;
  transition: var(--transition);
}
.cell-ws.selected {
  background-color: var(--primary);
  color: #ffffff;
}
.cell-ws.found {
  background-color: #2e7d32;
  color: #ffffff;
}
.ws-wordlist {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 15px;
  justify-content: center;
  max-width: 400px;
}
.ws-word {
  background-color: var(--border-color);
  padding: 4px 10px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-color);
}
.ws-word.found {
  text-decoration: line-through;
  opacity: 0.5;
  background-color: #2e7d32;
  color: #ffffff;
}

/* Rock Paper Scissors Selection */
.rps-options {
  display: flex;
  gap: 20px;
  justify-content: center;
  margin: 20px 0;
}
.btn-rps {
  background-color: var(--card-bg);
  border: 2px solid var(--border-color);
  border-radius: 50%;
  width: 70px;
  height: 70px;
  font-size: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
}
.btn-rps:hover {
  transform: scale(1.1);
  border-color: var(--primary);
  box-shadow: var(--shadow);
}
.rps-visual {
  display: flex;
  align-items: center;
  gap: 30px;
  font-size: 40px;
  margin: 15px 0;
}

/* Typing Test Area */
.typing-box {
  background-color: var(--bg-color);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 16px;
  font-size: 16px;
  line-height: 1.5;
  margin-bottom: 15px;
  width: 100%;
  max-width: 600px;
  text-align: left;
  user-select: none;
  min-height: 100px;
}
.typing-box span {
  position: relative;
}
.typing-box span.correct {
  color: #2e7d32;
}
.typing-box span.incorrect {
  color: #ff3333;
  background-color: rgba(255, 51, 51, 0.1);
}
.typing-box span.current {
  border-bottom: 2px solid var(--primary);
}
.typing-input {
  width: 100%;
  max-width: 600px;
  padding: 12px;
  font-size: 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  outline: none;
  background-color: var(--card-bg);
  color: var(--text-color);
}
.typing-input:focus {
  border-color: var(--primary);
}

/* Color Match Swatches */
.cm-target {
  font-size: 36px;
  font-weight: 800;
  margin-bottom: 24px;
}
.cm-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 15px;
  width: 260px;
  max-width: 100%;
}
.btn-cm-swatch {
  height: 60px;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  box-shadow: var(--shadow);
  transition: var(--transition);
}
.btn-cm-swatch:hover {
  transform: scale(1.05);
}

/* Chess UI */
.grid-chess {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  width: 360px;
  height: 360px;
  max-width: 100%;
  border: 4px solid var(--text-color);
  box-shadow: var(--shadow-lg);
}
.cell-chess {
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  cursor: pointer;
  position: relative;
  user-select: none;
}
.cell-chess.light-square {
  background-color: #f0d9b5;
}
.cell-chess.dark-square {
  background-color: #b58863;
}
.cell-chess.selected-square {
  background-color: rgba(108, 71, 255, 0.4) !important;
}
.cell-chess.valid-move::after {
  content: '';
  width: 10px;
  height: 10px;
  background-color: rgba(255, 107, 53, 0.6);
  border-radius: 50%;
  position: absolute;
}
.cell-chess.white-piece {
  color: #ffffff;
  text-shadow: 0 0 3px #000, 0 0 3px #000;
}
.cell-chess.black-piece {
  color: #000000;
  text-shadow: 0 0 3px #fff;
}

/* Number sliding puzzle (15-puzzle) */
.grid-np {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  background-color: var(--border-color);
  padding: 8px;
  border-radius: var(--radius-md);
  width: 300px;
  height: 300px;
  max-width: 100%;
}
.cell-np {
  background-color: var(--primary);
  color: #ffffff;
  font-size: 22px;
  font-weight: 800;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  user-select: none;
  transition: transform 0.1s ease, background-color 0.1s ease;
}
.cell-np:hover {
  background-color: var(--primary-hover);
}
.cell-np.empty {
  background-color: transparent;
  cursor: default;
  box-shadow: none;
}

/* On-screen game keyboard/pad for mobile */
.game-pad {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  margin-top: 15px;
}
.game-pad-row {
  display: flex;
  gap: 5px;
}
.btn-pad {
  width: 50px;
  height: 50px;
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-color);
  font-size: 20px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
  user-select: none;
}
.btn-pad:active {
  background-color: var(--primary);
  color: #ffffff;
}

/* Mobile responsive fixes */
@media (max-width: 600px) {
  .hero h1 {
    font-size: 32px;
  }
  .hero p {
    font-size: 15px;
  }
  .nav-container {
    padding: 0 15px;
  }
  .logo {
    font-size: 20px;
  }
  .filters-container {
    margin-top: 15px;
    padding: 0 10px;
  }
  .game-grid {
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 15px;
  }
  .game-card {
    padding: 15px;
  }
  .game-card-emoji {
    width: 70px;
    height: 70px;
    font-size: 36px;
    margin-bottom: 12px;
  }
  .game-card h3 {
    font-size: 16px;
  }
  .game-card p {
    font-size: 12px;
    margin-bottom: 15px;
  }
  .game-workspace {
    padding: 10px;
    min-height: 320px;
  }
  .stat-box {
    padding: 8px 12px;
    min-width: 70px;
  }
  .stat-val {
    font-size: 15px;
  }
  .game-title-area h2 {
    font-size: 24px;
  }
}