:root {
  --primary: #f23817; 
  --primary-dark: #2c3e50; 
  --text: #333333; 
  --bg: #f9f9f9; 
  --card-bg: #ffffff; 
  --border: #dddddd; 
  --shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
--header-gradient-start: #1e3c72;
--header-gradient-end: #2a5298;
--question-bar: #e8f0fe;
--explorer-highlight: #f13434;

}

/* Dark mode overrides */
body.dark-mode {
  --primary: #66d9ef; /* A softer, pastel blue */
  --text: #f9f9f9; /* Light gray */
  --bg: #2c3e50; /* Darker blue */
  --card-bg: #333333; /* Deep gray */
  --border: #444444; /* Medium gray */
  --shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
  --question-bar: #444444; 
  --send-button: #8BC34A; 
  --explorer-text: #cccccc; 
}

/* Color theme variations */
body.theme-green {
  --primary: #8bc34a; 
  --primary-dark: #3e8e41; 
  --send-button: #03A9F4; 
}

body.theme-orange {
  --primary: #ffa07a; 
  --primary-dark: #ff9900;
  --send-button: #FF69B4; 
}

body.theme-purple {
  --primary: #33c4b5; 
  --primary-dark: #9ab6b6; 
  --send-button: #9C27B0; 
}

/* Update question bar styles */
#queryInput {
  background-color: var(--question-bar);
  border: 2px solid var(--border);
}

/* Update send button styles */
.primary-btn {
  background-color: var(--send-button);
}

.primary-btn:hover {
  background-color: var(--primary-dark);
}

/* Update RAG Explorer text styles */
.examples p {
  color: var(--explorer-text);
}
/* Base styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Poppins', sans-serif;
  background-color: var(--bg);
  color: var(--text);
  transition: all 0.3s ease;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Layout */
.app-container {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  padding: 2rem;
  position: relative;
}

.main-card {
  background-color: var(--card-bg);
  border-radius: 16px;
  box-shadow: var(--shadow);
  width: 100%;
  max-width: 800px;
  overflow: hidden;
  position: relative;
  z-index: 10;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.main-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

/* Header */
header {
  padding: 1.5rem 2rem;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(135deg, var(--header-gradient-start), var(--header-gradient-end));
  color: white;
}
.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
h1 {
  font-size: 1.75rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.subtitle {
  font-size: 0.875rem;
  opacity: 0.9;
  margin-top: 0.25rem;
}

/* Theme toggle */
#themeToggle {
  background: transparent;
  border: none;
  color: white;
  font-size: 1.25rem;
  cursor: pointer;
  transition: transform 0.3s ease;
}
#themeToggle:hover {
  transform: rotate(25deg);
}

/* Search section */
.search-container {
  padding: 2rem;
}
.search-box {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}
#queryInput {
  flex: 1;
  padding: 0.875rem 1.25rem;
  border: 2px solid var(--border);
  border-radius: 12px;
  font-size: 1rem;
  background-color: var(--card-bg);
  color: var(--text);
  transition: all 0.3s ease;
}
#queryInput:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}
.primary-btn {
  background-color: var(--primary);
  color: white;
  border: none;
  padding: 0 1.75rem;
  border-radius: 12px;
  font-weight: 500;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: all 0.3s ease;
}
.primary-btn:hover {
  background-color: var(--primary-dark);
  transform: translateY(-2px);
}

/* Examples */
.examples p {
  font-size: 0.875rem;
  color: var(--text);
  opacity: 0.7;
  margin-bottom: 0.5rem;
}
.example-chips {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.chip {
  background-color: var(--border);
  padding: 0.5rem 1rem;
  border-radius: 999px;
  font-size: 0.875rem;
  cursor: pointer;
  transition: all 0.2s ease;
}
.chip:hover {
  background-color: var(--primary);
  color: white;
  transform: translateY(-1px);
}

/* Response section */
.response-container {
  padding: 0 2rem 2rem;
  min-height: 300px;
}
.welcome-message {
  text-align: center;
  padding: 2rem 0;
}
.welcome-image {
  width: 150px;
  height: auto;
  margin-bottom: 1rem;
  opacity: 0.9;
}
.welcome-message h2 {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
  color: var(--explorer-highlight);
}
.welcome-message p {
  color: var(--text);
  opacity: 0.8;
}

/* Answer block */
.answer-container {
  background-color: var(--bg);
  border-radius: 12px;
  padding: 1.5rem;
  margin-top: 1rem;
  border: 1px solid var(--border);
  animation: fadeIn 0.5s ease;
}
.question-text {
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.answer-text p {
  line-height: 1.6;
  margin-bottom: 0.75rem;
}

/* Loading state */
.loading-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 2rem 0;
}
.loader {
  border: 4px solid var(--border);
  border-top: 4px solid var(--primary);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  animation: spin 1s linear infinite;
  margin-bottom: 1rem;
}
.loading-text {
  font-size: 0.875rem;
  color: var(--text);
  opacity: 0.7;
}

/* Footer */
footer {
  padding: 1.5rem;
  text-align: center;
  font-size: 0.875rem;
  color: var(--text);
  opacity: 0.7;
  border-top: 1px solid var(--border);
}
.footer-links {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-top: 0.5rem;
}
.footer-link {
  color: var(--primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.25rem;
  transition: all 0.2s ease;
}
.footer-link:hover {
  color: var(--primary-dark);
  transform: translateY(-1px);
}

/* Snowfall effect */
.snowfall {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
  background: linear-gradient(to bottom, transparent 95%, var(--bg) 100%);
}
.snowflake {
  position: absolute;
  background: white;
  border-radius: 50%;
  opacity: 0.8;
  animation: fall linear infinite;
}

/* Animations */
@keyframes spin {
  to { transform: rotate(360deg); }
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fall {
  to { transform: translateY(100vh); }
}

/* Responsive */
@media (max-width: 768px) {
  .app-container {
    padding: 1rem;
  }
  .search-box {
    flex-direction: column;
  }
  .primary-btn {
    width: 100%;
    justify-content: center;
    padding: 0.875rem;
  }
  .header-content {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }
  #themeToggle {
    align-self: flex-end;
  }
}