:root {
  --color-primary: #6d28d9;
  --color-secondary: #7c3aed;
  --color-background: #1a1b26;
  --color-surface: #24283b;
  --color-text: #c0caf5;
  --color-text-muted: #9aa5ce;
  --color-success: #9ece6a;
  --color-error: #f7768e;
  --color-accent: #bb9af7;
  
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;
  
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Inter', sans-serif;
}

body {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-background);
  color: var(--color-text);
  padding: var(--spacing-md);
}

.container {
  width: 100%;
  max-width: 600px;
  margin: 0 auto;
}

.game-area {
  background: var(--color-surface);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.game-header {
  margin-bottom: var(--spacing-xl);
}

.stats-container {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
}

.stat-box {
  background: rgba(255, 255, 255, 0.05);
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--radius-md);
  text-align: center;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.stat-label {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.stat-value {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-accent);
}

.word-section {
  text-align: center;
  margin: var(--spacing-xl) 0;
}

.scrambled-word {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: var(--spacing-lg);
  min-height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  text-shadow: 0 0 20px rgba(187, 154, 247, 0.3);
}

.word-input input {
  width: 100%;
  padding: var(--spacing-md);
  font-size: 1.125rem;
  background: rgba(255, 255, 255, 0.05);
  border: 2px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  color: var(--color-text);
  text-align: center;
  transition: all var(--transition-normal);
}

.word-input input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(187, 154, 247, 0.2);
}

.word-input input::placeholder {
  color: var(--color-text-muted);
}

.controls {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
  margin-top: var(--spacing-xl);
}

.btn {
  padding: var(--spacing-md);
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-normal);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

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

.btn-secondary {
  background: rgba(255, 255, 255, 0.1);
  color: var(--color-text);
}

.btn:hover:not(:disabled) {
  transform: translateY(-2px);
  filter: brightness(1.1);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.hint-container {
  margin-top: var(--spacing-lg);
  text-align: center;
  min-height: 24px;
  color: var(--color-text-muted);
  font-style: italic;
}

.message {
  margin-top: var(--spacing-lg);
  padding: var(--spacing-sm);
  text-align: center;
  border-radius: var(--radius-md);
  font-weight: 500;
  min-height: 40px;
  transition: all var(--transition-normal);
}

.success {
  color: var(--color-success);
  animation: fadeIn 0.5s ease;
}

.error {
  color: var(--color-error);
  animation: shake 0.5s ease;
}

@keyframes fadeIn {
  from { 
    opacity: 0; 
    transform: translateY(-10px); 
  }

  to { 
    opacity: 1; 
    transform: translateY(0); 
  }
}

@keyframes shake {
  0%, 100% {
    transform: translateX(0);
  }

  25% {
    transform: translateX(-5px);
  }
  
  75% {
    transform: translateX(5px);
  }
}

@media (max-width: 480px) {
  .game-area {
    padding: var(--spacing-lg);
  }
  
  .scrambled-word {
    font-size: 2rem;
  }
  
  .controls {
    grid-template-columns: 1fr;
  }
  
  .stat-box {
    padding: var(--spacing-sm) var(--spacing-md);
  }
}