/* === СБРОС И ОСНОВНЫЕ ПЕРЕМЕННЫЕ === */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  user-select: none;
  -webkit-user-select: none;
  -webkit-tap-highlight-color: transparent;
}

:root {
  --primary-color: #4a90e2;
  --primary-hover: #357abd;
  --success-color: #2ecc71;
  --danger-color: #e74c3c;
  --secondary-color: #95a5a6;
  --bg-gradient: linear-gradient(135deg, #a8c0ff 0%, #3f2b96 100%);
  --card-bg: #ffffff;
  --tile-bg: #f8f9fa;
  --tile-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

body {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-gradient);
  padding: 10px;
}

/* === ГЛАВНЫЙ КОНТЕЙНЕР (ПОДДЕРЖКА ПОЛНОЭКРАННОГО РЕЖИМА) === */
.game-container {
  width: 100%;
  max-width: 800px;
  background-color: var(--card-bg);
  border-radius: 20px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
  padding: 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 90vh;
  position: relative;
  overflow: hidden;
}

/* Полноэкранный режим */
.game-container:fullscreen {
  max-width: 100vw;
  width: 100vw;
  height: 100vh;
  border-radius: 0;
  padding: 25px;
}

/* === ШАПКА И ПАНЕЛЬ УПРАВЛЕНИЯ === */
.game-header {
  text-align: center;
  position: relative;
  margin-bottom: 15px;
}

.game-header h1 {
  font-size: 1.8rem;
  color: #2c3e50;
  margin-bottom: 5px;
}

.instruction {
  font-size: 0.95rem;
  color: #7f8c8d;
}

.top-controls {
  position: absolute;
  top: 0;
  right: 0;
  display: flex;
  align-items: center;
  gap: 10px;
}

.volume-control {
  display: flex;
  align-items: center;
  gap: 5px;
  background: #f0f2f5;
  padding: 4px 8px;
  border-radius: 20px;
}

#volumeSlider {
  width: 60px;
  cursor: pointer;
}

.icon-btn {
  background: none;
  border: none;
  font-size: 1.2rem;
  cursor: pointer;
  padding: 4px;
  transition: transform 0.2s;
}

.icon-btn:hover {
  transform: scale(1.15);
}

/* === ИГРОВОЕ ПОЛЕ (СЕТКА С БУКВАМИ) === */
.board-area {
  flex-grow: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 10px 0;
}

.alphabet-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 12px;
  width: 100%;
  max-width: 650px;
}

/* === ПЛИТКИ БУКВ === */
.letter-tile {
  background: var(--tile-bg);
  border: 2px solid #e0e0e0;
  border-radius: 12px;
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  font-weight: bold;
  color: #2c3e50;
  box-shadow: var(--tile-shadow);
  cursor: pointer;
  transition: all 0.2s ease;
  position: relative;
}

.letter-tile:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.2);
  border-color: var(--primary-color);
}

/* Состояния карточек */
.letter-tile.selected {
  border-color: var(--primary-color);
  background-color: #e3f2fd;
  transform: scale(1.05);
  box-shadow: 0 0 10px rgba(74, 144, 226, 0.5);
}

.letter-tile.dragging {
  opacity: 0.4;
  transform: scale(0.95);
}

.letter-tile.hovered {
  border-color: #27ae60;
  background-color: #e8f8f5;
}

.letter-tile.correct {
  border-color: var(--success-color);
  background-color: #d4edda;
  color: #155724;
}

.letter-tile.wrong {
  border-color: var(--danger-color);
  background-color: #f8d7da;
  color: #721c24;
}

/* === КНОПКИ ДЕЙСТВИЙ === */
.game-footer {
  display: flex;
  justify-content: center;
  gap: 15px;
  margin-top: 15px;
  flex-wrap: wrap;
}

.btn {
  padding: 12px 24px;
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  box-shadow: none;
}

.primary-btn {
  background-color: var(--primary-color);
  color: white;
}

.primary-btn:hover:not(:disabled) {
  background-color: var(--primary-hover);
}

.success-btn {
  background-color: var(--success-color);
  color: white;
}

.success-btn:hover:not(:disabled) {
  background-color: #27ae60;
}

.secondary-btn {
  background-color: var(--secondary-color);
  color: white;
}

.secondary-btn:hover:not(:disabled) {
  background-color: #7f8c8d;
}

/* === МОДАЛЬНОЕ ОКНО ПОБЕДЫ === */
.modal {
  display: none;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  align-items: center;
  justify-content: center;
  z-index: 100;
}

.modal.active {
  display: flex;
  animation: fadeIn 0.3s ease;
}

.modal-content {
  background: white;
  padding: 30px;
  border-radius: 16px;
  text-align: center;
  max-width: 320px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.modal-content h2 {
  font-size: 2rem;
  margin-bottom: 10px;
}

.modal-content p {
  margin-bottom: 20px;
  color: #555;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* === АДАПТИВНОСТЬ ПОД МОБИЛЬНЫЕ УСТРОЙСТВА === */
@media (max-width: 600px) {
  .game-container {
    padding: 15px;
  }

  .game-header h1 {
    font-size: 1.4rem;
  }

  .top-controls {
    position: static;
    justify-content: center;
    margin-top: 10px;
  }

  .alphabet-grid {
    grid-template-columns: repeat(5, 1fr);
    gap: 8px;
  }

  .letter-tile {
    font-size: 1.4rem;
    border-radius: 8px;
  }

  .btn {
    padding: 10px 18px;
    font-size: 0.9rem;
    flex: 1;
    min-width: 120px;
  }
}