:root {
  --hacker-bg: #000000;
  --hacker-text: #00ff00;
  --hacker-text-alt: #00cc00;
  --hacker-dim: #008800;
  --hacker-glow: rgba(0, 255, 0, 0.5);
  --danger-color: #ff0000;
  --warning-color: #ffaa00;
  --success-color: #00ff00;
  --info-color: #00aaff;
  --font-mono: "Source Code Pro", "JetBrains Mono", "Courier New", monospace;
}

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

body {
  font-family: var(--font-mono);
  background: var(--hacker-bg);
  color: var(--hacker-text);
  overflow: hidden;
  height: 100vh;
  width: 100vw;
}

/* Welcome Overlay */
.welcome-overlay {
  position: fixed;
  inset: 0;
  background: linear-gradient(135deg, #0a0a0a 0%, #000000 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  animation: fadeIn 0.5s ease;
}

.welcome-content {
  max-width: 600px;
  padding: 40px;
  text-align: center;
  background: rgba(0, 20, 0, 0.8);
  border: 2px solid var(--hacker-text);
  border-radius: 8px;
  box-shadow: 0 0 30px var(--hacker-glow);
}

.welcome-logo {
  font-size: 1.2rem;
  color: var(--hacker-text);
  margin-bottom: 20px;
  font-weight: 700;
  letter-spacing: 2px;
  text-shadow: 0 0 10px var(--hacker-glow);
}

.welcome-content h1 {
  font-size: 3rem;
  margin-bottom: 10px;
  color: var(--hacker-text);
  text-shadow: 0 0 20px var(--hacker-glow);
  letter-spacing: 4px;
  animation: glow 2s ease-in-out infinite;
}

.welcome-subtitle {
  font-size: 1.2rem;
  color: var(--hacker-text-alt);
  margin-bottom: 30px;
}

.welcome-instructions {
  text-align: left;
  margin: 30px 0;
  padding: 20px;
  background: rgba(0, 0, 0, 0.5);
  border-left: 3px solid var(--hacker-text);
}

.welcome-instructions h2 {
  font-size: 1.3rem;
  margin-bottom: 15px;
  color: var(--hacker-text);
}

.welcome-instructions ul {
  list-style: none;
  padding-left: 0;
}

.welcome-instructions li {
  margin-bottom: 12px;
  font-size: 0.95rem;
  color: var(--hacker-text-alt);
  padding-left: 20px;
  position: relative;
}

.welcome-instructions li::before {
  content: ">";
  position: absolute;
  left: 0;
  color: var(--hacker-text);
  font-weight: bold;
}

.welcome-instructions kbd {
  background: rgba(0, 255, 0, 0.1);
  border: 1px solid var(--hacker-text);
  padding: 2px 8px;
  border-radius: 3px;
  font-family: inherit;
  font-size: 0.9em;
  color: var(--hacker-text);
  box-shadow: 0 0 5px var(--hacker-glow);
}

.welcome-tips {
  margin-top: 20px;
  padding: 15px;
  background: rgba(0, 255, 0, 0.05);
  border: 1px solid var(--hacker-dim);
  border-radius: 4px;
}

.welcome-tips p {
  color: var(--hacker-text);
  font-size: 0.9rem;
}

.start-btn {
  background: var(--hacker-text);
  color: #000;
  border: none;
  padding: 15px 40px;
  font-size: 1.2rem;
  font-weight: 700;
  font-family: var(--font-mono);
  cursor: pointer;
  border-radius: 4px;
  transition: all 0.3s ease;
  text-transform: uppercase;
  letter-spacing: 2px;
  box-shadow: 0 0 20px var(--hacker-glow);
}

.start-btn:hover {
  transform: scale(1.05);
  box-shadow: 0 0 30px var(--hacker-glow);
}

.start-btn:active {
  transform: scale(0.98);
}

.back-link {
  display: inline-block;
  margin-top: 20px;
  color: var(--hacker-text-alt);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.3s ease;
}

.back-link:hover {
  color: var(--hacker-text);
  text-shadow: 0 0 10px var(--hacker-glow);
}

/* Hacker Screen */
.hacker-screen {
  width: 100vw;
  height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--hacker-bg);
  position: relative;
  overflow: hidden;
}

.hacker-screen::before {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    rgba(0, 255, 0, 0.03) 0px,
    transparent 1px,
    transparent 2px,
    rgba(0, 255, 0, 0.03) 3px
  );
  pointer-events: none;
  z-index: 10;
  animation: scanlines 8s linear infinite;
}

@keyframes scanlines {
  0% {
    transform: translateY(0);
  }
  100% {
    transform: translateY(10px);
  }
}

/* Header Bar */
.header-bar {
  background: rgba(0, 20, 0, 0.8);
  border-bottom: 1px solid var(--hacker-text);
  padding: 8px 15px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-shrink: 0;
  box-shadow: 0 2px 10px var(--hacker-glow);
  z-index: 5;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 10px;
}

.header-logo {
  font-weight: 700;
  font-size: 0.9rem;
  text-shadow: 0 0 5px var(--hacker-glow);
}

.header-separator {
  color: var(--hacker-dim);
}

.header-title {
  font-size: 0.85rem;
  color: var(--hacker-text-alt);
  letter-spacing: 1px;
}

.header-right {
  display: flex;
  gap: 8px;
}

.icon-btn {
  background: transparent;
  border: 1px solid var(--hacker-text);
  color: var(--hacker-text);
  padding: 4px 10px;
  font-family: var(--font-mono);
  cursor: pointer;
  transition: all 0.2s ease;
  font-size: 0.9rem;
  border-radius: 3px;
}

.icon-btn:hover {
  background: var(--hacker-text);
  color: #000;
  box-shadow: 0 0 10px var(--hacker-glow);
}

/* Terminal */
.terminal {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 20px;
  position: relative;
  scrollbar-width: thin;
  scrollbar-color: var(--hacker-text) transparent;
}

.terminal::-webkit-scrollbar {
  width: 8px;
}

.terminal::-webkit-scrollbar-track {
  background: transparent;
}

.terminal::-webkit-scrollbar-thumb {
  background: var(--hacker-text);
  border-radius: 4px;
}

.terminal-content {
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.5;
  white-space: pre-wrap;
  word-wrap: break-word;
  text-shadow: 0 0 2px var(--hacker-glow);
  animation: textGlow 0.1s ease-in;
}

@keyframes textGlow {
  0% {
    opacity: 0.7;
  }
  100% {
    opacity: 1;
  }
}

.terminal-cursor {
  display: inline-block;
  width: 8px;
  height: 16px;
  background: var(--hacker-text);
  animation: blink 1s steps(2) infinite;
  margin-left: 2px;
  box-shadow: 0 0 5px var(--hacker-glow);
}

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

/* Status Bar */
.status-bar {
  background: rgba(0, 20, 0, 0.8);
  border-top: 1px solid var(--hacker-text);
  padding: 6px 15px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  flex-shrink: 0;
  box-shadow: 0 -2px 10px var(--hacker-glow);
  z-index: 5;
}

.status-left {
  flex: 1;
}

.status-right {
  display: flex;
  gap: 10px;
  align-items: center;
}

.status-separator {
  color: var(--hacker-dim);
}

#statusText {
  color: var(--hacker-text);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* Alert Overlay */
.alert-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  animation: fadeIn 0.3s ease;
}

.alert-box {
  background: rgba(0, 20, 0, 0.95);
  border: 2px solid var(--hacker-text);
  border-radius: 8px;
  padding: 30px;
  min-width: 400px;
  max-width: 500px;
  box-shadow: 0 0 50px var(--hacker-glow);
  animation: slideIn 0.3s ease;
}

@keyframes slideIn {
  0% {
    transform: translateY(-50px);
    opacity: 0;
  }
  100% {
    transform: translateY(0);
    opacity: 1;
  }
}

.alert-header {
  display: flex;
  align-items: center;
  gap: 15px;
  margin-bottom: 20px;
}

.alert-icon {
  font-size: 2rem;
  line-height: 1;
}

.alert-title {
  font-size: 1.5rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
}

.alert-message {
  font-size: 1rem;
  line-height: 1.6;
  margin-bottom: 20px;
  color: var(--hacker-text-alt);
}

.alert-progress {
  width: 100%;
  height: 8px;
  background: rgba(0, 255, 0, 0.1);
  border: 1px solid var(--hacker-text);
  border-radius: 4px;
  overflow: hidden;
}

.alert-progress-bar {
  height: 100%;
  background: var(--hacker-text);
  width: 0%;
  animation: progressBar 3s ease-in-out;
  box-shadow: 0 0 10px var(--hacker-glow);
}

@keyframes progressBar {
  0% {
    width: 0%;
  }
  100% {
    width: 100%;
  }
}

/* Alert variants */
.alert-overlay.success .alert-box {
  border-color: var(--success-color);
  box-shadow: 0 0 50px rgba(0, 255, 0, 0.5);
}

.alert-overlay.success .alert-icon {
  color: var(--success-color);
}

.alert-overlay.success .alert-title {
  color: var(--success-color);
}

.alert-overlay.success .alert-progress-bar {
  background: var(--success-color);
}

.alert-overlay.danger .alert-box {
  border-color: var(--danger-color);
  box-shadow: 0 0 50px rgba(255, 0, 0, 0.5);
}

.alert-overlay.danger .alert-icon {
  color: var(--danger-color);
}

.alert-overlay.danger .alert-title {
  color: var(--danger-color);
}

.alert-overlay.danger .alert-progress-bar {
  background: var(--danger-color);
}

.alert-overlay.warning .alert-box {
  border-color: var(--warning-color);
  box-shadow: 0 0 50px rgba(255, 170, 0, 0.5);
}

.alert-overlay.warning .alert-icon {
  color: var(--warning-color);
}

.alert-overlay.warning .alert-title {
  color: var(--warning-color);
}

.alert-overlay.warning .alert-progress-bar {
  background: var(--warning-color);
}

.alert-overlay.info .alert-box {
  border-color: var(--info-color);
  box-shadow: 0 0 50px rgba(0, 170, 255, 0.5);
}

.alert-overlay.info .alert-icon {
  color: var(--info-color);
}

.alert-overlay.info .alert-title {
  color: var(--info-color);
}

.alert-overlay.info .alert-progress-bar {
  background: var(--info-color);
}

/* Animations */
@keyframes fadeIn {
  0% {
    opacity: 0;
  }
  100% {
    opacity: 1;
  }
}

@keyframes glow {
  0%, 100% {
    text-shadow: 0 0 20px var(--hacker-glow);
  }
  50% {
    text-shadow: 0 0 30px var(--hacker-glow), 0 0 40px var(--hacker-glow);
  }
}

/* Utility */
.hidden {
  display: none !important;
}

/* Responsive */
@media (max-width: 768px) {
  .welcome-content {
    padding: 30px 20px;
    max-width: 90%;
  }

  .welcome-content h1 {
    font-size: 2rem;
  }

  .welcome-instructions {
    font-size: 0.85rem;
  }

  .alert-box {
    min-width: auto;
    max-width: 90%;
    padding: 20px;
  }

  .terminal {
    padding: 15px;
  }

  .terminal-content {
    font-size: 12px;
  }

  .header-title {
    display: none;
  }
}

@media (max-width: 480px) {
  .welcome-content h1 {
    font-size: 1.5rem;
  }

  .start-btn {
    font-size: 1rem;
    padding: 12px 30px;
  }

  .header-bar {
    padding: 6px 10px;
  }

  .status-bar {
    font-size: 0.7rem;
    padding: 4px 10px;
  }

  .terminal-content {
    font-size: 11px;
  }
}