:root {
  --primary-color: #00c2ff;
  --secondary-color: #ff00c8;
  --dark-bg: #121212;
  --medium-bg: #1e1e1e;
  --light-bg: #2a2a2a;
  --text-color: #e0e0e0;
  --success-color: #00ff7f;
  --warning-color: #ffcc00;
  --error-color: #ff4d4d;
}

body {
  background-color: var(--dark-bg);
  color: var(--text-color);
  font-family: 'Roboto', sans-serif;
  margin: 0;
  padding: 0;
  transition: all 0.3s ease;
  overflow-x: hidden;
}

/* Neon text effect */
.neon-text {
  color: var(--primary-color);
  text-shadow: 0 0 5px var(--primary-color), 0 0 10px var(--primary-color),
    0 0 20px var(--primary-color);
  letter-spacing: 1px;
}

.neon-text-alt {
  color: var(--secondary-color);
  text-shadow: 0 0 5px var(--secondary-color), 0 0 10px var(--secondary-color),
    0 0 20px var(--secondary-color);
  letter-spacing: 1px;
}

/* Navbar styling */
.cyber-navbar {
  background-color: var(--medium-bg);
  border-bottom: 2px solid var(--primary-color);
  box-shadow: 0 0 15px rgba(0, 194, 255, 0.5);
  padding: 15px 0;
}

.cyber-navbar .navbar-brand {
  font-size: 1.8rem;
  font-weight: 700;
  letter-spacing: 2px;
  padding: 0 15px;
}

.cyber-navbar .nav-link {
  color: var(--text-color);
  margin: 0 10px;
  position: relative;
  transition: all 0.3s ease;
}

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

.cyber-navbar .nav-link:hover::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--primary-color);
  box-shadow: 0 0 10px var(--primary-color);
}

/* Card styling */
.cyber-card {
  background-color: var(--medium-bg);
  border: 1px solid var(--primary-color);
  border-radius: 10px;
  box-shadow: 0 0 15px rgba(0, 194, 255, 0.2);
  margin: 20px 0;
  overflow: hidden;
  transition: all 0.3s ease;
}

.cyber-card:hover {
  box-shadow: 0 0 25px rgba(0, 194, 255, 0.4);
  transform: translateY(-5px);
}

.cyber-card .card-header {
  background-color: var(--light-bg);
  border-bottom: 1px solid var(--primary-color);
  color: var(--primary-color);
  font-weight: 600;
  letter-spacing: 1px;
  padding: 15px 20px;
}

.cyber-card .card-body {
  padding: 20px;
}

/* Button styling */
.cyber-btn {
  background: linear-gradient(45deg, var(--dark-bg), var(--medium-bg));
  border: 1px solid var(--primary-color);
  border-radius: 5px;
  color: var(--primary-color);
  cursor: pointer;
  font-weight: 600;
  letter-spacing: 1px;
  margin: 10px 5px;
  overflow: hidden;
  padding: 10px 25px;
  position: relative;
  text-transform: uppercase;
  transition: all 0.3s ease;
  z-index: 1;
}

.cyber-btn::before {
  background: var(--primary-color);
  content: '';
  height: 100%;
  left: -100%;
  position: absolute;
  top: 0;
  transition: all 0.3s ease;
  width: 100%;
  z-index: -1;
}

.cyber-btn:hover {
  color: var(--dark-bg);
  text-shadow: none;
}

.cyber-btn:hover::before {
  left: 0;
}

.cyber-btn-alt {
  border-color: var(--secondary-color);
  color: var(--secondary-color);
}

.cyber-btn-alt::before {
  background: var(--secondary-color);
}

/* Form styling */
.cyber-form .form-control {
  background-color: var(--light-bg);
  border: 1px solid var(--primary-color);
  border-radius: 5px;
  color: var(--text-color);
  margin-bottom: 15px;
  padding: 12px 15px;
  transition: all 0.3s ease;
}

.cyber-form .form-control:focus {
  background-color: var(--medium-bg);
  border-color: var(--primary-color);
  box-shadow: 0 0 10px rgba(0, 194, 255, 0.5);
  outline: none;
}

.cyber-form label {
  color: var(--primary-color);
  font-weight: 500;
  margin-bottom: 8px;
}

/* Chat interface */
#chat {
  background-color: var(--medium-bg);
  border-top: 1px solid var(--primary-color);
  display: flex;
  flex-direction: column;
  gap: 15px;
  height: calc(100vh - 180px);
  overflow-y: auto;
  padding: 20px;
  scrollbar-color: var(--primary-color) var(--medium-bg);
  scrollbar-width: thin;
}

#chat::-webkit-scrollbar {
  width: 8px;
}

#chat::-webkit-scrollbar-track {
  background: var(--medium-bg);
}

#chat::-webkit-scrollbar-thumb {
  background-color: var(--primary-color);
  border-radius: 4px;
}

.message {
  border-radius: 10px;
  max-width: 75%;
  padding: 12px 18px;
  position: relative;
  word-wrap: break-word;
}

.message.user {
  align-self: flex-end;
  background: linear-gradient(135deg, var(--primary-color), #0088cc);
  color: #fff;
  margin-right: 15px;
}

.message.user::after {
  border-left: 12px solid var(--primary-color);
  border-top: 12px solid transparent;
  border-bottom: 12px solid transparent;
  content: '';
  position: absolute;
  right: -12px;
  top: 15px;
}

.message.bot {
  align-self: flex-start;
  background-color: var(--light-bg);
  border-left: 3px solid var(--secondary-color);
  color: var(--text-color);
  margin-left: 15px;
}

.message.bot::before {
  border-right: 12px solid var(--light-bg);
  border-top: 12px solid transparent;
  border-bottom: 12px solid transparent;
  content: '';
  left: -12px;
  position: absolute;
  top: 15px;
}

.message.bot p,
.message.bot ol,
.message.bot ul,
.message.bot li,
.message.bot blockquote {
  color: var(--text-color);
  margin-bottom: 10px;
}

.message.bot h1,
.message.bot h2,
.message.bot h3,
.message.bot h4 {
  color: var(--secondary-color);
  margin-bottom: 15px;
}

.input-area {
  background-color: var(--medium-bg);
  border-top: 1px solid var(--primary-color);
  padding: 20px;
}

.input-area .form-control {
  background-color: var(--light-bg);
  border: 1px solid var(--primary-color);
  color: var(--text-color);
  padding: 12px 15px;
}

.input-area .form-control:focus {
  box-shadow: 0 0 10px rgba(0, 194, 255, 0.5);
}

/* Code blocks */
.code-container {
  margin: 15px 0;
  position: relative;
}

.code-container pre {
  background-color: #0a0a0a;
  border-left: 3px solid var(--success-color);
  border-radius: 6px;
  font-family: 'Fira Code', monospace;
  font-size: 14px;
  line-height: 1.5;
  margin: 0;
  overflow-x: auto;
  padding: 15px 20px 15px 45px;
  position: relative;
  transition: all 0.3s ease;
}

.code-container pre code {
  color: var(--success-color);
}

.code-container pre code span {
  counter-increment: linenumber;
  display: block;
}

.code-container pre code span::before {
  color: #555;
  content: counter(linenumber);
  display: inline-block;
  margin-left: -40px;
  padding-right: 15px;
  text-align: right;
  width: 30px;
}

.code-container .copy-button {
  background-color: var(--light-bg);
  border: 1px solid var(--success-color);
  border-radius: 4px;
  color: var(--success-color);
  cursor: pointer;
  font-size: 12px;
  opacity: 0.7;
  padding: 5px 10px;
  position: absolute;
  right: 10px;
  top: 10px;
  transition: all 0.3s ease;
  z-index: 5;
}

.code-container .copy-button:hover {
  background-color: var(--success-color);
  color: #0a0a0a;
  opacity: 1;
  transform: scale(1.05);
}

.code-container .copy-button.copied::after {
  animation: fadeInOut 2s forwards;
  background-color: var(--dark-bg);
  border: 1px solid var(--success-color);
  border-radius: 3px;
  color: var(--success-color);
  content: 'Copied!';
  font-size: 10px;
  opacity: 0;
  padding: 3px 7px;
  position: absolute;
  right: 0;
  top: -25px;
}

@keyframes fadeInOut {
  0% {
    opacity: 0;
    transform: translateY(5px);
  }
  20% {
    opacity: 1;
    transform: translateY(0);
  }
  80% {
    opacity: 1;
    transform: translateY(0);
  }
  100% {
    opacity: 0;
    transform: translateY(-5px);
  }
}

.code-container.highlight pre {
  background-color: #121a1e;
}

/* Learning modes */
.learning-mode {
  background-color: var(--medium-bg);
  border: 1px solid var(--primary-color);
  border-radius: 10px;
  cursor: pointer;
  margin: 15px 0;
  overflow: hidden;
  position: relative;
  transition: all 0.3s ease;
}

.learning-mode:hover {
  box-shadow: 0 0 20px rgba(0, 194, 255, 0.3);
  transform: translateY(-5px);
}

.learning-mode::before {
  background: linear-gradient(
    45deg,
    var(--primary-color),
    var(--secondary-color)
  );
  content: '';
  height: 5px;
  left: 0;
  position: absolute;
  top: 0;
  width: 100%;
}

.learning-mode .mode-icon {
  align-items: center;
  background-color: var(--light-bg);
  border-radius: 50%;
  color: var(--primary-color);
  display: flex;
  font-size: 2rem;
  height: 80px;
  justify-content: center;
  margin: 20px auto;
  width: 80px;
}

.learning-mode .mode-title {
  color: var(--primary-color);
  font-size: 1.3rem;
  font-weight: 600;
  margin: 15px 0;
  text-align: center;
}

.learning-mode .mode-description {
  color: var(--text-color);
  font-size: 0.9rem;
  margin: 0 20px 20px;
  text-align: center;
}

/* Animations */
@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(0, 194, 255, 0.7);
  }
  70% {
    box-shadow: 0 0 0 10px rgba(0, 194, 255, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(0, 194, 255, 0);
  }
}

.pulse {
  animation: pulse 2s infinite;
}

@keyframes typing {
  from {
    width: 0;
  }
  to {
    width: 100%;
  }
}

.typing-indicator {
  align-items: center;
  background-color: var(--light-bg);
  border-radius: 20px;
  display: flex;
  height: 35px;
  justify-content: center;
  margin: 10px 0;
  padding: 5px 15px;
  width: 60px;
}

.typing-indicator span {
  animation: blink 1.4s infinite both;
  background-color: var(--primary-color);
  border-radius: 50%;
  display: block;
  height: 7px;
  margin: 0 3px;
  width: 7px;
}

.typing-indicator span:nth-child(2) {
  animation-delay: 0.2s;
}

.typing-indicator span:nth-child(3) {
  animation-delay: 0.4s;
}

@keyframes blink {
  0% {
    opacity: 0.1;
  }
  20% {
    opacity: 1;
  }
  100% {
    opacity: 0.1;
  }
}

/* Landing page */
.hero-section {
  align-items: center;
  background: linear-gradient(135deg, var(--dark-bg) 0%, #000 100%);
  display: flex;
  flex-direction: column;
  height: 100vh;
  justify-content: center;
  position: relative;
  text-align: center;
  width: 100%;
}

.hero-section::before {
  background: radial-gradient(
    circle,
    rgba(0, 194, 255, 0.1) 0%,
    rgba(0, 0, 0, 0) 70%
  );
  content: '';
  height: 100%;
  left: 0;
  position: absolute;
  top: 0;
  width: 100%;
}

.hero-title {
  font-size: 4rem;
  font-weight: 700;
  margin-bottom: 20px;
}

.hero-subtitle {
  font-size: 1.5rem;
  margin-bottom: 40px;
  max-width: 700px;
}

.feature-section {
  padding: 80px 0;
}

.feature-card {
  background-color: var(--medium-bg);
  border: 1px solid var(--primary-color);
  border-radius: 10px;
  margin: 20px 0;
  overflow: hidden;
  padding: 30px;
  transition: all 0.3s ease;
}

.feature-card:hover {
  box-shadow: 0 0 20px rgba(0, 194, 255, 0.3);
  transform: translateY(-5px);
}

.feature-icon {
  color: var(--primary-color);
  font-size: 3rem;
  margin-bottom: 20px;
}

.feature-title {
  color: var(--primary-color);
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 15px;
}

.feature-description {
  color: var(--text-color);
  font-size: 1rem;
}

/* Dashboard */
.dashboard-header {
  align-items: center;
  background-color: var(--medium-bg);
  border-bottom: 1px solid var(--primary-color);
  display: flex;
  justify-content: space-between;
  padding: 20px;
}

.dashboard-title {
  color: var(--primary-color);
  font-size: 1.8rem;
  font-weight: 700;
}

.dashboard-stats {
  display: flex;
  gap: 20px;
}

.stat-card {
  align-items: center;
  background-color: var(--light-bg);
  border: 1px solid var(--primary-color);
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  padding: 15px;
  width: 120px;
}

.stat-value {
  color: var(--primary-color);
  font-size: 1.8rem;
  font-weight: 700;
}

.stat-label {
  color: var(--text-color);
  font-size: 0.8rem;
  margin-top: 5px;
}

/* Multiple choice quiz */
.quiz-container {
  background-color: var(--medium-bg);
  border: 1px solid var(--primary-color);
  border-radius: 10px;
  margin: 20px 0;
  padding: 20px;
}

.quiz-question {
  color: var(--text-color);
  font-size: 1.2rem;
  margin-bottom: 20px;
}

.quiz-options {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.quiz-option {
  background-color: var(--light-bg);
  border: 1px solid var(--primary-color);
  border-radius: 5px;
  cursor: pointer;
  padding: 15px;
  transition: all 0.3s ease;
}

.quiz-option:hover {
  background-color: rgba(0, 194, 255, 0.1);
}

.quiz-option.selected {
  background-color: rgba(0, 194, 255, 0.2);
  border-color: var(--primary-color);
}

.quiz-option.correct {
  background-color: rgba(0, 255, 127, 0.2);
  border-color: var(--success-color);
}

.quiz-option.incorrect {
  background-color: rgba(255, 77, 77, 0.2);
  border-color: var(--error-color);
}

.quiz-feedback {
  background-color: var(--light-bg);
  border-left: 3px solid var(--primary-color);
  margin-top: 20px;
  padding: 15px;
}

/* Code analysis */
.code-analysis {
  background-color: var(--medium-bg);
  border: 1px solid var(--primary-color);
  border-radius: 10px;
  margin: 20px 0;
  overflow: hidden;
}

.code-analysis-header {
  background-color: var(--light-bg);
  border-bottom: 1px solid var(--primary-color);
  display: flex;
  justify-content: space-between;
  padding: 15px 20px;
}

.code-analysis-title {
  color: var(--primary-color);
  font-size: 1.2rem;
  font-weight: 600;
}

.code-analysis-body {
  padding: 20px;
}

.code-analysis-feedback {
  background-color: var(--light-bg);
  border-left: 3px solid var(--secondary-color);
  margin-top: 20px;
  padding: 15px;
}

.code-line-highlight {
  background-color: rgba(255, 204, 0, 0.2);
  display: block;
}

.code-line-error {
  background-color: rgba(255, 77, 77, 0.2);
  display: block;
}

.code-line-success {
  background-color: rgba(0, 255, 127, 0.2);
  display: block;
}

.annotation {
  background-color: var(--light-bg);
  border-left: 3px solid var(--warning-color);
  font-size: 0.9rem;
  margin: 10px 0;
  padding: 10px 15px;
}

/* Language selector styling */
.language-selector select,
select.form-control {
  background-color: var(--light-bg);
  border: 1px solid var(--primary-color);
  border-radius: 5px;
  color: var(--text-color);
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  padding: 4px 35px 4px 15px;
  height: auto;
  min-height: 45px;
  line-height: 1.5;
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2300c2ff' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: right 8px center;
  background-size: 16px;
  transition: all 0.3s ease;
}

.language-selector select:hover {
  border-color: var(--secondary-color);
  box-shadow: 0 0 10px rgba(0, 194, 255, 0.2);
}

.language-selector select:focus {
  outline: none;
  border-color: var(--secondary-color);
  box-shadow: 0 0 15px rgba(0, 194, 255, 0.3);
}

.language-selector select option {
  background-color: var(--medium-bg);
  color: var(--text-color);
  padding: 8px;
}

/* Responsive */
@media (max-width: 768px) {
  .hero-title {
    font-size: 2.5rem;
  }

  .hero-subtitle {
    font-size: 1.2rem;
  }

  .message {
    max-width: 85%;
  }

  .dashboard-stats {
    flex-wrap: wrap;
  }

  .stat-card {
    width: 100px;
  }
}