/* Added CSS variables for better maintainability and performance */
:root {
  --color-primary: #00ff00;
  --color-secondary: #00ffff;
  --color-error: #ff4444;
  --color-warning: #ffaa00;
  --color-bg-dark: #0a0a0a;
  --color-bg-darker: #000;
  --color-bg-terminal: rgba(0, 0, 0, 0.95);
  --color-border: #1a1a1a;
  --color-text-muted: #888;
  --color-text-light: #aaa;
  --font-mono: "Courier New", Courier, monospace;
  --glow-primary: 0 0 10px rgba(0, 255, 0, 0.5);
  --glow-secondary: 0 0 10px rgba(0, 255, 255, 0.5);
  --transition-fast: 0.3s ease;
}

/* ===== RESET & BASE STYLES ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-mono);
  background: linear-gradient(135deg, var(--color-bg-dark) 0%, #1a1a2e 100%);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  padding: 20px;
  color: var(--color-primary);
}

/* Added screen reader only class for accessibility */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* ===== TERMINAL CONTAINER ===== */
.terminal-container {
  width: 100%;
  max-width: 900px;
  background: var(--color-bg-terminal);
  border-radius: 8px;
  box-shadow: 0 20px 60px rgba(0, 255, 0, 0.3);
  overflow: hidden;
  border: 1px solid var(--color-primary);
  animation: glow 2s ease-in-out infinite alternate;
  /* Added will-change for better animation performance */
  will-change: box-shadow;
}

@keyframes glow {
  from {
    box-shadow: 0 20px 60px rgba(0, 255, 0, 0.3);
  }
  to {
    box-shadow: 0 20px 80px rgba(0, 255, 0, 0.5);
  }
}

/* ===== TERMINAL HEADER ===== */
.terminal-header {
  background: var(--color-border);
  padding: 10px 15px;
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--color-primary);
}

.terminal-buttons {
  display: flex;
  gap: 8px;
  margin-right: 15px;
}

.btn {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  display: inline-block;
}

.btn.close {
  background: #ff5f56;
}

.btn.minimize {
  background: #ffbd2e;
}

.btn.maximize {
  background: #27c93f;
}

.terminal-title {
  color: var(--color-primary);
  font-size: 14px;
  font-weight: bold;
}

/* ===== TERMINAL BODY ===== */
.terminal-body {
  padding: 20px;
  min-height: 500px;
  max-height: 70vh;
  overflow-y: auto;
  background: var(--color-bg-darker);
  /* Added smooth scrolling */
  scroll-behavior: smooth;
}

.terminal-body::-webkit-scrollbar {
  width: 10px;
}

.terminal-body::-webkit-scrollbar-track {
  background: var(--color-bg-dark);
}

.terminal-body::-webkit-scrollbar-thumb {
  background: var(--color-primary);
  border-radius: 5px;
}

/* ===== OUTPUT STYLES ===== */
#output {
  margin-bottom: 20px;
}

.output-line {
  margin-bottom: 8px;
  line-height: 1.6;
  animation: fadeIn 0.3s ease-in;
  /* Added will-change for better animation performance */
  will-change: opacity, transform;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(-5px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.command {
  color: var(--color-primary);
  font-weight: bold;
}

.error {
  color: var(--color-error);
}

.success {
  color: var(--color-secondary);
}

.info {
  color: var(--color-warning);
}

.section-title {
  color: var(--color-secondary);
  font-size: 18px;
  font-weight: bold;
  margin: 15px 0 10px 0;
  text-decoration: underline;
}

.item {
  margin-left: 20px;
  margin-bottom: 10px;
}

.item-title {
  color: var(--color-primary);
  font-weight: bold;
}

.item-subtitle {
  color: var(--color-text-muted);
  font-style: italic;
}

.item-description {
  color: var(--color-text-light);
  margin-left: 10px;
}

.link {
  color: var(--color-secondary);
  text-decoration: underline;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.link:hover {
  color: var(--color-primary);
}

/* ===== INPUT LINE ===== */
.input-line {
  display: flex;
  align-items: center;
  gap: 0;
  position: relative;
}

.prompt {
  color: var(--color-primary);
  font-weight: bold;
  white-space: nowrap;
}

#command-input {
  background: transparent;
  border: none;
  outline: none;
  color: transparent;
  font-family: var(--font-mono);
  font-size: 16px;
  caret-color: transparent;
  flex: 1;
  padding: 0;
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  z-index: 10;
}

#typed-text {
  color: var(--color-primary);
  font-family: var(--font-mono);
  font-size: 16px;
  white-space: pre;
  pointer-events: none;
}

.cursor {
  color: var(--color-primary);
  animation: blink 1s infinite;
  pointer-events: none;
  /* Added will-change for better animation performance */
  will-change: opacity;
}

@keyframes blink {
  0%,
  49% {
    opacity: 1;
  }
  50%,
  100% {
    opacity: 0;
  }
}

/* ===== ASCII ART ===== */
.ascii-art {
  color: var(--color-secondary);
  font-size: 12px;
  line-height: 1.2;
  white-space: pre;
  margin: 10px 0;
}

/* ===== TEXT UTILITIES ===== */
.text-accent {
  color: var(--color-secondary);
  text-shadow: var(--glow-secondary);
}

.text-color {
  color: var(--color-secondary);
  text-shadow: var(--glow-secondary);
}

/* ===== FOOTER ===== */
footer {
  width: 100%;
  max-width: 900px;
  padding: 15px 20px;
  text-align: center;
  background: transparent;
  margin-top: 20px;
}

footer a {
  text-decoration: none;
  color: inherit;
  display: block;
  padding: 10px 20px;
  border-radius: 4px;
  transition: all var(--transition-fast);
  background: rgba(0, 0, 0, 0.3);
}

footer a:hover {
  background: rgba(0, 255, 0, 0.1);
  box-shadow: 0 0 20px rgba(0, 255, 0, 0.2);
}

footer p {
  color: var(--color-primary);
  font-size: 12px;
  margin: 3px 0;
  opacity: 0.6;
  transition: all var(--transition-fast);
}

footer a:hover p {
  opacity: 1;
  text-shadow: var(--glow-primary);
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
  .terminal-container {
    max-width: 100%;
  }

  .terminal-body {
    padding: 15px;
    font-size: 14px;
  }

  .prompt {
    font-size: 12px;
  }

  #command-input {
    font-size: 14px;
  }

  footer {
    padding: 15px;
  }

  footer p {
    font-size: 12px;
  }
}

/* Added print styles for better printing */
@media print {
  body {
    background: white;
    color: black;
  }

  .terminal-container {
    border: 1px solid black;
    box-shadow: none;
  }

  .cursor {
    display: none;
  }

  footer {
    page-break-before: avoid;
  }
}

/* Added reduced motion support for accessibility */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}