/* SolvOxide Custom Properties */
:root {
  /* Color Palette */
  --seal-brown: #582f0eff;
  --russet: #7f4f24ff;
  --raw-umber: #936639ff;
  --lion: #a68a64ff;
  --khaki: #b6ad90ff;
  --sage: #c2c5aaff;
  --sage-2: #a4ac86ff;
  --reseda-green: #656d4aff;
  --ebony: #414833ff;
  --black-olive: #333d29ff;
  
  /* Light mode colors */
  --bg-primary: #ffffff;
  --bg-secondary: #f8f8f6;
  --text-primary: #1a1a1a;
  --text-secondary: #2d2d2d;
  --accent: var(--russet);
  --border: #d0d0d0;
  --shadow: rgba(0, 0, 0, 0.1);
  
  /* Typography */
  --font-primary: 'Georgia', 'Times New Roman', serif;
  --font-secondary: 'Helvetica Neue', 'Arial', sans-serif;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  
  /* Border radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  
  /* Transitions */
  --transition: all 0.3s ease;
}

/* Dark mode colors */
.dark-mode {
  --bg-primary: #0a0b08;
  --bg-secondary: #1a1c16;
  --text-primary: #ffffff;
  --text-secondary: #f0f0f0;
  --accent: var(--lion);
  --border: #454a38;
  --shadow: rgba(0, 0, 0, 0.5);
}

/* Reset and base styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-secondary);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  transition: var(--transition);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing-sm);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  gap: var(--spacing-md);
}

/* Header */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) 0;
  border-bottom: 1px solid var(--border);
}

.logo-container {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.logo {
  width: 48px;
  height: 48px;
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
  transition: var(--transition);
}

/* Logo images for different modes */
.light-mode .logo {
  background-image: url('/static/SolvOxideo-Logo-Black_1754239203323.png');
}

.dark-mode .logo {
  background-image: url('/static/SolvOxideo-Logo-White_1754239203323.png');
}

.title {
  font-family: var(--font-primary);
  font-size: 2rem;
  font-weight: 400;
  color: var(--text-primary);
  letter-spacing: 0.05em;
}

.title-link {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease;
}

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

.theme-toggle {
  background: var(--bg-secondary);
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  padding: var(--spacing-xs);
  cursor: pointer;
  color: var(--text-primary);
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
}

.theme-toggle:hover,
.theme-toggle:focus {
  background-color: var(--accent);
  color: white;
  border-color: var(--accent);
  outline: none;
  transform: translateY(-1px);
}

/* Main content */
.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.conversation-view {
  flex: 1;
  padding: var(--spacing-md);
  max-width: 1200px;
  margin: 0 auto;
}

/* Welcome message */
.welcome-message {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.welcome-message h2 {
  font-family: var(--font-primary);
  font-size: 2.5rem;
  color: var(--accent);
  margin-bottom: var(--spacing-sm);
  font-weight: 400;
}

.welcome-message p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* Sample questions */
.sample-questions {
  margin-top: var(--spacing-xl);
}

.sample-questions h3 {
  font-family: var(--font-primary);
  font-size: 1.5rem;
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
  text-align: center;
}

.question-buttons {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--spacing-sm);
  max-width: 1200px;
  margin: 0 auto;
}

.sample-question {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  cursor: pointer;
  transition: var(--transition);
  font-size: 0.9rem;
  color: var(--text-primary);
  text-align: left;
  font-weight: 500;
}

.sample-question:hover {
  background-color: var(--accent);
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px var(--shadow);
}

/* Message styles */
.message {
  margin-bottom: var(--spacing-md);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  max-width: 80%;
  word-wrap: break-word;
}

.message.user {
  background-color: var(--russet);
  color: white;
  margin-left: auto;
  text-align: right;
  font-weight: 500;
}

.message.ai {
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  border-left: 4px solid var(--accent);
  border: 1px solid var(--border);
}

.message-content {
  font-size: 1rem;
  line-height: 1.6;
}

.message-content p {
  margin-bottom: var(--spacing-sm);
}

.message-content p:last-child {
  margin-bottom: 0;
}

/* Voice controls */
.voice-controls {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
  justify-content: flex-start;
  align-items: center;
}

.voice-control-btn {
  background: var(--accent);
  border: 2px solid var(--accent);
  border-radius: var(--radius-md);
  padding: var(--spacing-sm);
  cursor: pointer;
  color: white;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  box-shadow: 0 2px 8px rgba(166, 138, 100, 0.3);
}

.voice-control-btn:hover {
  background-color: var(--russet);
  border-color: var(--russet);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(166, 138, 100, 0.4);
}

.voice-control-btn:active {
  transform: translateY(0);
  box-shadow: 0 2px 6px rgba(166, 138, 100, 0.3);
}

.voice-icon {
  width: 18px;
  height: 18px;
  stroke-width: 2.5;
}

/* Input section */
.input-section {
  padding: var(--spacing-md);
  border-top: 1px solid var(--border);
  background-color: var(--bg-primary);
}

.input-form {
  max-width: 1200px;
  margin: 0 auto;
}

.input-label {
  text-align: center;
  margin-bottom: var(--spacing-md);
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
}

.input-label h3 {
  font-family: var(--font-primary);
  font-size: 1.5rem;
  font-weight: 400;
  color: var(--text-primary);
  margin: 0;
}

.input-container {
  display: flex;
  gap: var(--spacing-sm);
  align-items: stretch;
}

.text-input {
  flex: 1;
  padding: var(--spacing-md);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-size: 1rem;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  transition: var(--transition);
}

.text-input:focus {
  outline: none;
  border-color: var(--accent);
  border-width: 2px;
  box-shadow: 0 0 0 3px rgba(166, 138, 100, 0.2);
}

.send-button {
  background-color: var(--accent);
  border: none;
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  cursor: pointer;
  color: white;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 56px;
}

.send-button:hover {
  background-color: var(--russet);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px var(--shadow);
}

.send-button:active {
  transform: translateY(0);
}

.button-icon {
  width: 20px;
  height: 20px;
}

/* Loading indicator */
.loading-indicator {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background-color: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  box-shadow: 0 8px 32px var(--shadow);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-md);
  z-index: 1000;
}

.loading-indicator.hidden {
  display: none;
}

.loading-spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--border);
  border-top: 3px solid var(--accent);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Responsive design */
@media (max-width: 768px) {
  .container {
    padding: var(--spacing-xs);
  }
  
  .title {
    font-size: 1.5rem;
  }
  
  .welcome-message h2 {
    font-size: 2rem;
  }
  
  .question-buttons {
    grid-template-columns: 1fr;
  }
  
  .message {
    max-width: 95%;
  }
  
  .input-container {
    gap: var(--spacing-xs);
  }
}

/* Scrollbar styling */
.conversation-view::-webkit-scrollbar {
  width: 6px;
}

.conversation-view::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

.conversation-view::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}

.conversation-view::-webkit-scrollbar-thumb:hover {
  background: var(--accent);
}

/* Focus styles for accessibility */
.sample-question:focus,
.theme-toggle:focus,
.send-button:focus {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.text-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(166, 138, 100, 0.2);
}

/* Voice recognition active state */
.voice-active .send-button {
  background-color: #e74c3c;
  animation: pulse 1.5s infinite;
}

@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(231, 76, 60, 0.7);
  }
  70% {
    box-shadow: 0 0 0 10px rgba(231, 76, 60, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(231, 76, 60, 0);
  }
}

/* Footer styles */
.site-footer {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
}

.footer-links {
  margin-bottom: var(--spacing-sm);
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  margin: 0 var(--spacing-sm);
  font-size: 0.9rem;
  transition: color 0.2s ease;
}

.footer-links a:hover {
  color: var(--accent);
}

.footer-copyright {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.footer-copyright a {
  color: var(--accent);
  text-decoration: none;
}

.footer-copyright a:hover {
  text-decoration: underline;
}

/* Modal styles */
.modal {
  display: none;
  position: fixed;
  z-index: 1000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
}

.modal-content {
  background-color: var(--bg-primary);
  margin: 5% auto;
  border: 1px solid var(--border);
  border-radius: 12px;
  width: 90%;
  max-width: 600px;
  max-height: 80vh;
  overflow-y: auto;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--border);
  background-color: var(--bg-secondary);
  border-radius: 12px 12px 0 0;
}

.modal-header h2 {
  margin: 0;
  color: var(--text-primary);
  font-size: 1.25rem;
}

.close {
  color: var(--text-secondary);
  font-size: 28px;
  font-weight: bold;
  cursor: pointer;
  line-height: 1;
  transition: color 0.2s ease;
}

.close:hover,
.close:focus {
  color: var(--accent);
}

.modal-body {
  padding: var(--spacing-md);
  color: var(--text-primary);
  line-height: 1.6;
}

.modal-body h3 {
  color: var(--accent);
  margin-top: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
  font-size: 1.1rem;
}

.modal-body p {
  margin-bottom: var(--spacing-sm);
}

.modal-body ul {
  margin-bottom: var(--spacing-sm);
  padding-left: var(--spacing-md);
}

.modal-body li {
  margin-bottom: var(--spacing-xs);
}

.modal-body a {
  color: var(--accent);
  text-decoration: none;
}

.modal-body a:hover {
  text-decoration: underline;
}

/* About modal specific styling */
.sage-list ul {
  list-style-type: disc;
  margin-left: var(--spacing-md);
  padding-left: var(--spacing-md);
}

.process-list ol {
  list-style-type: decimal;
  margin-left: var(--spacing-md);
  padding-left: var(--spacing-md);
}

.sage-list li,
.process-list li {
  margin-bottom: var(--spacing-xs);
  line-height: 1.6;
}

.architecture-diagram {
  margin: var(--spacing-md) 0;
  text-align: center;
}

.architecture-diagram svg {
  max-width: 100%;
  height: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background-color: var(--bg-primary);
}

.tech-stack {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-md);
  margin: var(--spacing-md) 0;
}

.tech-category {
  background-color: var(--bg-secondary);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
}

.tech-category h4 {
  color: var(--accent);
  margin-bottom: var(--spacing-sm);
  font-size: 1rem;
  font-weight: 600;
}

.tech-category ul {
  list-style-type: disc;
  margin-left: var(--spacing-sm);
  padding-left: var(--spacing-sm);
}

.tech-category li {
  margin-bottom: var(--spacing-xs);
  font-size: 0.9rem;
  line-height: 1.5;
}

/* Header Controls and About Link */
.header-controls {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.about-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.2s ease;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
}

.about-link:hover {
  color: var(--accent);
  background-color: var(--bg-secondary);
}

/* Responsive design for modals */
@media (max-width: 768px) {
  .footer-links a {
    display: block;
    margin: var(--spacing-xs) 0;
  }
  
  .modal-content {
    margin: 10% auto;
    width: 95%;
  }
  
  .modal-body {
    padding: var(--spacing-sm);
  }
  
  .header-controls {
    gap: var(--spacing-sm);
  }
  
  .about-link {
    font-size: 0.9rem;
    padding: var(--spacing-xs);
  }
}