:root {
  --bg-dark: #0f172a;
  --panel-bg: #1e293b;
  --accent: #10b981;
  --accent-hover: #059669;
  --danger: #ef4444;
  --text-primary: #f8fafc;
  --text-muted: #64748b;
  --grid-color-1: #1e293b;
  --grid-color-2: #0f172a;
}

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

body {
  background-color: var(--bg-dark);
  color: var(--text-primary);
  font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: hidden;
}

.game-container {
  width: 95%;
  max-width: 1200px;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.game-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.game-title {
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.05em;
  color: var(--text-primary);
}

.game-title span {
  color: var(--accent);
}

.stats-panel {
  display: flex;
  gap: 1rem;
}

.stat-card {
  background: var(--panel-bg);
  border: 1px solid rgba(255, 255, 255, 0.05);
  padding: 0.5rem 1.5rem;
  border-radius: 0.75rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 100px;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
}

.stat-label {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

.stat-value {
  font-family: 'Space Mono', monospace;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
}

.canvas-wrapper {
  position: relative;
  width: 100%;
  aspect-ratio: 1200 / 480;
  border-radius: 1rem;
  overflow: hidden;
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.3), 0 8px 10px -6px rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

#snake {
  display: block;
  width: 100%;
  height: 100%;
  background-color: var(--bg-dark);
}

/* Overlays */
.overlay {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(8px);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 10;
  transition: opacity 0.3s ease;
}

.overlay.hidden {
  opacity: 0;
  pointer-events: none;
}

.overlay-content {
  text-align: center;
  max-width: 480px;
  padding: 2.5rem;
  background: rgba(30, 41, 59, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 1.5rem;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

.overlay h2 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.overlay p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.5;
  margin-bottom: 2rem;
}

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

.final-stats {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 2rem;
  background: rgba(15, 23, 42, 0.4);
  padding: 1rem;
  border-radius: 1rem;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.final-stat {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

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

.final-stat strong {
  font-family: 'Space Mono', monospace;
  font-size: 1.75rem;
  color: var(--accent);
}

.overlay h2.text-danger ~ .final-stats strong {
  color: var(--danger);
}

/* Button styles */
.btn-primary {
  background-color: var(--accent);
  color: #ffffff;
  border: none;
  padding: 0.85rem 2rem;
  font-size: 1rem;
  font-weight: 700;
  border-radius: 0.75rem;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 4px 14px 0 rgba(16, 185, 129, 0.4);
}

.btn-primary:hover {
  background-color: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px 0 rgba(16, 185, 129, 0.5);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-primary.btn-danger {
  background-color: var(--danger);
  box-shadow: 0 4px 14px 0 rgba(239, 68, 68, 0.4);
}

.btn-primary.btn-danger:hover {
  background-color: #dc2626;
  box-shadow: 0 6px 20px 0 rgba(239, 68, 68, 0.5);
}

.btn-settings-icon {
  background: var(--panel-bg);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 0.75rem;
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.btn-settings-icon svg {
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-settings-icon:hover {
  background-color: #334155;
  color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

.btn-settings-icon:hover svg {
  transform: rotate(90deg);
}

.btn-settings-icon:active {
  transform: translateY(0);
}

.btn-primary.btn-warning {
  background-color: #f59e0b;
  box-shadow: 0 4px 14px 0 rgba(245, 158, 11, 0.4);
}

.btn-primary.btn-warning:hover {
  background-color: #d97706;
  box-shadow: 0 6px 20px 0 rgba(245, 158, 11, 0.5);
}

.settings-options {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: stretch;
  width: 100%;
}

.toggle-container {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 0.5rem;
  background: rgba(15, 23, 42, 0.4);
  padding: 1rem;
  border-radius: 1rem;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.switch-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 700;
  font-size: 0.9rem;
  cursor: pointer;
}

.switch-label input {
  width: 1.5rem;
  height: 1.5rem;
  accent-color: var(--accent);
  cursor: pointer;
}

.settings-close-btn {
  margin-top: 1.5rem;
}

.settings-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  margin-top: 1.5rem;
}

.hidden {
  display: none !important;
}

/* Footer styles */
.game-footer {
  text-align: center;
}

.game-footer p {
  font-size: 0.875rem;
  color: var(--text-muted);
}

kbd {
  background: var(--panel-bg);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 0.25rem;
  padding: 0.15rem 0.4rem;
  font-family: 'Space Mono', monospace;
  font-size: 0.75rem;
  color: var(--text-primary);
  box-shadow: 0 2px 0 0 rgba(0, 0, 0, 0.2);
}

@media (max-width: 640px) {
  .game-header {
    flex-direction: column;
    align-items: center;
  }
}