@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;600;700;900&family=Inter:wght@400;500;600;700&display=swap');

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  color: white;
  font-family: 'Inter', sans-serif;
  cursor: pointer;
  overflow: hidden;
  background: linear-gradient(135deg, #0f0f1e 0%, #1a1a2e 50%, #16213e 100%);
}

/* Overlay */
#overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(15, 15, 30, 0.4);
  backdrop-filter: blur(8px);
  z-index: 100;
  display: none;
  opacity: 0;
  transition: opacity 0.3s ease;
}

#overlay.active {
  display: block;
  opacity: 1;
}

/* Modal Styling */
#instructions,
#results {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s ease;
}

#instructions.show,
#results.show {
  pointer-events: auto;
  opacity: 1;
}

/* Modal Content */
.modal-content {
  max-width: 480px;
  padding: 60px 40px;
  background: linear-gradient(135deg, rgba(26, 26, 46, 0.95) 0%, rgba(22, 33, 62, 0.95) 100%);
  border-radius: 24px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(20px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
  animation: slideUp 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
  text-align: center;
}

@keyframes slideUp {
  from {
    transform: translateY(40px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.title {
  font-size: 2.5em;
  font-weight: 900;
  margin: 0 0 10px 0;
  background: linear-gradient(135deg, #00d4ff 0%, #7b2ff7 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.result-title {
  font-size: 2.2em;
  font-weight: 700;
  margin: 0;
  color: #ff6b6b;
}

.divider {
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, #00d4ff, #7b2ff7);
  margin: 15px auto 25px;
  border-radius: 2px;
}

/* Instructions Grid */
.instructions-grid {
  display: grid;
  gap: 15px;
  margin: 30px 0 35px;
  text-align: left;
}

.instruction-item {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 15px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: all 0.3s ease;
}

.instruction-item:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(0, 212, 255, 0.3);
  transform: translateX(5px);
}

.instruction-item .icon {
  font-size: 1.5em;
  min-width: 30px;
}

.instruction-item p {
  margin: 0;
  font-size: 0.95em;
  line-height: 1.4;
}

.instruction-item strong {
  color: #00d4ff;
}

/* Result Stats */
.result-stats {
  margin: 30px 0;
}

.stat-box {
  background: rgba(123, 47, 247, 0.15);
  padding: 20px;
  border-radius: 12px;
  border: 2px solid rgba(123, 47, 247, 0.3);
}

.stat-label {
  margin: 0;
  font-size: 0.9em;
  color: rgba(255, 255, 255, 0.7);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.stat-value {
  margin: 8px 0 0 0;
  font-size: 2.5em;
  font-weight: 900;
  color: #7b2ff7;
}

.result-message {
  margin: 20px 0 10px;
  font-size: 1.1em;
  color: #ff6b6b;
  font-weight: 600;
}

.result-hint {
  margin: 0 0 30px;
  font-size: 0.9em;
  color: rgba(255, 255, 255, 0.6);
}

/* Button Styles */
.btn {
  padding: 12px 30px;
  font-size: 1em;
  font-weight: 600;
  border: none;
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-family: 'Inter', sans-serif;
}

.btn-primary {
  background: linear-gradient(135deg, #00d4ff 0%, #7b2ff7 100%);
  color: white;
  width: 100%;
  box-shadow: 0 8px 24px rgba(0, 212, 255, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(0, 212, 255, 0.4);
}

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

.btn-secondary {
  background: linear-gradient(135deg, #ff6b6b 0%, #ff8787 100%);
  color: white;
  width: 100%;
  box-shadow: 0 8px 24px rgba(255, 107, 107, 0.3);
}

.btn-secondary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(255, 107, 107, 0.4);
}

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

/* Keyboard Key Style */
kbd {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 0.85em;
  font-family: 'Courier New', monospace;
  font-weight: 600;
}

/* HUD */
#hud {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  padding: 25px 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 50;
  pointer-events: none;
}

.score-display,
.level-display {
  font-size: 1.8em;
  font-weight: 700;
  text-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  background: rgba(255, 255, 255, 0.05);
  padding: 12px 20px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  animation: fadeIn 0.6s ease;
}

.score-display {
  color: #00d4ff;
}

.level-display {
  color: #7b2ff7;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes scaleUp {
  from {
    transform: scale(0.8);
    opacity: 0;
  }
  to {
    transform: scale(1);
    opacity: 1;
  }
}

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.1);
  }
}

/* Responsive Design */
@media (max-width: 768px) {
  .modal-content {
    margin: 20px;
    padding: 40px 25px;
  }
  
  .title {
    font-size: 2em;
  }
  
  .score-display,
  .level-display {
    font-size: 1.3em;
    padding: 10px 15px;
  }
  
  #hud {
    padding: 15px 20px;
  }
}