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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  line-height: 1.6;
  color: #333;
  background-color: #f8f9fa;
}

.skip-link {
  position: absolute;
  top: -40px;
  left: 6px;
  background: #000;
  color: #fff;
  padding: 8px;
  text-decoration: none;
  z-index: 1000;
}

.skip-link:focus {
  top: 6px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  margin-bottom: 0.5rem;
  font-weight: 600;
  line-height: 1.2;
}

.h1 {
  font-size: 2.5rem;
}
.h2 {
  font-size: 2rem;
}
.h3 {
  font-size: 1.75rem;
}
.h4 {
  font-size: 1.5rem;
}
.h5 {
  font-size: 1.25rem;
}
.h6 {
  font-size: 1rem;
}

p {
  margin-bottom: 1rem;
}

.small {
  font-size: 0.875rem;
}

.muted {
  color: #6c757d;
}

.fw-semibold {
  font-weight: 600;
}

.required {
  color: #dc3545;
}

a {
  color: #0066cc;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.site-header {
  background: #fff;
  border-bottom: 1px solid #e9ecef;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  color: #333;
  text-decoration: none;
}

.logo {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: bold;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.site-nav ul {
  display: flex;
  list-style: none;
  gap: 1.5rem;
  margin: 0;
}

.site-nav a {
  color: #333;
  font-weight: 500;
  padding: 0.5rem 0;
  border-bottom: 2px solid transparent;
  transition: border-color 0.2s;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  border-bottom-color: #667eea;
  text-decoration: none;
}

.nav-search {
  display: flex;
  gap: 0.5rem;
}

.nav-search input {
  padding: 0.5rem;
  border: 1px solid #ddd;
  border-radius: 4px;
  width: 200px;
}

.nav-search button {
  padding: 0.5rem 1rem;
  background: #667eea;
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
}

@media (max-width: 768px) {
  .nav-toggle {
    display: block;
  }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    border-top: 1px solid #e9ecef;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }

  .site-nav.nav-open {
    max-height: 300px;
  }

  .site-nav ul {
    flex-direction: column;
    gap: 0;
    padding: 1rem;
  }

  .nav-search {
    padding: 1rem;
    border-top: 1px solid #e9ecef;
  }

  .nav-search input {
    width: 100%;
  }
}

.section {
  padding: 2rem 0;
}

.page-header {
  text-align: center;
  margin-bottom: 3rem;
}

.page-header h1 {
  margin-bottom: 1rem;
}

.grid {
  display: grid;
  gap: 1rem;
}

.grid-1 {
  grid-template-columns: 1fr;
}
.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}
.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}
.grid-3-2 {
  grid-template-columns: 2fr 1fr;
}

.gap-sm {
  gap: 0.5rem;
}
.gap-md {
  gap: 1rem;
}
.gap-lg {
  gap: 2rem;
}

.align-center {
  align-items: center;
}

@media (max-width: 768px) {
  .grid-2,
  .grid-3,
  .grid-3-2 {
    grid-template-columns: 1fr;
  }
}

.mt-2 {
  margin-top: 0.5rem;
}
.mt-lg {
  margin-top: 2rem;
}
.mb-2 {
  margin-bottom: 0.5rem;
}
.mb-lg {
  margin-bottom: 2rem;
}

.text-center {
  text-align: center;
}
.text-right {
  text-align: right;
}

.card {
  background: white;
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  overflow: hidden;
}

.card-header {
  padding: 1.5rem;
  border-bottom: 1px solid #e9ecef;
  background: #f8f9fa;
}

.card-body {
  padding: 1.5rem;
}

.card.danger {
  border-left: 4px solid #dc3545;
}

.card.danger .card-header {
  background: #f8d7da;
  border-bottom-color: #f5c6cb;
}

label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
}

input,
select,
textarea {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 1rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: #667eea;
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

textarea {
  resize: vertical;
  min-height: 100px;
}

.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  font-weight: 500;
  text-align: center;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-primary {
  background: #667eea;
  color: white;
  border-color: #667eea;
}

.btn-primary:hover {
  background: #5a6fd8;
  border-color: #5a6fd8;
  text-decoration: none;
}

.btn-outline {
  background: transparent;
  color: #667eea;
  border-color: #667eea;
}

.btn-outline:hover {
  background: #667eea;
  color: white;
  text-decoration: none;
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1.125rem;
}

.cost-summary {
  text-align: center;
  padding: 2rem;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  border-radius: 8px;
  margin-bottom: 2rem;
}

.cost-range {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-top: 1rem;
  font-size: 1.5rem;
  font-weight: bold;
}

.cost-separator {
  opacity: 0.7;
}

.breakdown-grid {
  display: grid;
  gap: 1rem;
}

.breakdown-item {
  padding: 1rem;
  border: 1px solid #e9ecef;
  border-radius: 4px;
}

.breakdown-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.breakdown-cost {
  font-weight: 600;
  color: #667eea;
}

.breakdown-desc {
  margin: 0;
  color: #6c757d;
  font-size: 0.9rem;
}

.cost-factors ul {
  list-style-type: disc;
  padding-left: 1.5rem;
}

.cost-factors li {
  margin-bottom: 0.5rem;
}

.sources-section {
  background: #f8f9fa;
  padding: 1rem;
  border-radius: 4px;
  border-left: 4px solid #667eea;
}

.disclaimer {
  background: #fff3cd;
  padding: 1rem;
  border-radius: 4px;
  border-left: 4px solid #ffc107;
}

.loading-spinner {
  width: 40px;
  height: 40px;
  border: 4px solid #f3f3f3;
  border-top: 4px solid #667eea;
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto 1rem;
}

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

.resource-details {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid #e9ecef;
}

.resource-details p {
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
}

.site-footer {
  background: #343a40;
  color: white;
  padding: 3rem 0 1rem;
  margin-top: 4rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-links a {
  color: #adb5bd;
  text-decoration: none;
}

.footer-links a:hover {
  color: white;
  text-decoration: underline;
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
}

.hero {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 4rem 0;
  text-align: center;
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.hero p {
  font-size: 1.25rem;
  margin-bottom: 2rem;
  opacity: 0.9;
}

@media (max-width: 768px) {
  .hero h1 {
    font-size: 2rem;
  }

  .hero p {
    font-size: 1rem;
  }
}

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin: 3rem 0;
}

.feature-card {
  text-align: center;
  padding: 2rem;
}

.feature-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem;
  color: white;
  font-size: 1.5rem;
}

.stats {
  background: #f8f9fa;
  padding: 3rem 0;
  text-align: center;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.stat-item h3 {
  font-size: 2.5rem;
  color: #667eea;
  margin-bottom: 0.5rem;
}

.stat-item p {
  margin: 0;
  color: #6c757d;
}

/* Chat Interface Styles */
.chat-layout {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 2rem;
  margin-top: 2rem;
}

.chat-sidebar {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.quick-questions {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.quick-question-btn {
  background: #f8f9fa;
  border: 1px solid #e9ecef;
  border-radius: 6px;
  padding: 0.75rem;
  text-align: left;
  cursor: pointer;
  transition: all 0.2s;
  font-size: 0.875rem;
  color: #495057;
}

.quick-question-btn:hover {
  background: #667eea;
  color: white;
  border-color: #667eea;
}

.assistant-info ul {
  margin: 0.5rem 0;
  padding-left: 1.25rem;
}

.chat-main {
  min-height: 600px;
}

.chat-window {
  background: white;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  overflow: hidden;
  height: 600px;
  display: flex;
  flex-direction: column;
}

.chat-header {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.chat-status {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 500;
}

.status-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #28a745;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(40, 167, 69, 0.7);
  }
  70% {
    box-shadow: 0 0 0 10px rgba(40, 167, 69, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(40, 167, 69, 0);
  }
}

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 1.5rem;
  background: #f8f9fa;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.message-wrapper {
  display: flex;
  gap: 0.75rem;
  max-width: 85%;
}

.user-wrapper {
  align-self: flex-end;
  flex-direction: row-reverse;
}

.assistant-wrapper {
  align-self: flex-start;
}

.message-avatar {
  flex-shrink: 0;
}

.avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: bold;
}

.user-avatar {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
}

.assistant-avatar {
  background: #e9ecef;
  color: #495057;
}

.message {
  background: white;
  border-radius: 18px;
  padding: 1rem 1.25rem;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  position: relative;
}

.user-message {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  border-bottom-right-radius: 6px;
}

.assistant-message {
  border-bottom-left-radius: 6px;
  border: 1px solid #e9ecef;
}

.message-content {
  line-height: 1.5;
}

.message-content p {
  margin-bottom: 0.75rem;
}

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

.message-content strong {
  font-weight: 600;
}

.message-time {
  font-size: 0.75rem;
  opacity: 0.7;
  margin-top: 0.5rem;
}

.chat-input-area {
  padding: 1.5rem;
  background: white;
  border-top: 1px solid #e9ecef;
}

.input-container {
  display: flex;
  gap: 0.75rem;
  align-items: flex-end;
}

.input-container textarea {
  flex: 1;
  border: 2px solid #e9ecef;
  border-radius: 20px;
  padding: 0.75rem 1rem;
  resize: none;
  min-height: 44px;
  max-height: 120px;
  font-family: inherit;
  transition: border-color 0.2s;
}

.input-container textarea:focus {
  border-color: #667eea;
  box-shadow: none;
}

.send-button {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border: none;
  color: white;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.2s;
  flex-shrink: 0;
}

.send-button:hover {
  transform: scale(1.05);
}

.send-button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.send-icon {
  font-size: 1.1rem;
}

.loading-dots {
  display: flex;
  gap: 2px;
}

.loading-dots span {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: white;
  animation: loading-dots 1.4s infinite ease-in-out both;
}

.loading-dots span:nth-child(1) {
  animation-delay: -0.32s;
}

.loading-dots span:nth-child(2) {
  animation-delay: -0.16s;
}

@keyframes loading-dots {
  0%,
  80%,
  100% {
    transform: scale(0);
  }
  40% {
    transform: scale(1);
  }
}

/* Responsive chat layout */
@media (max-width: 1024px) {
  .chat-layout {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .chat-sidebar {
    order: 2;
  }

  .chat-main {
    order: 1;
  }

  .quick-questions {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .quick-question-btn {
    flex: 1;
    min-width: 200px;
  }
}

@media (max-width: 768px) {
  .chat-window {
    height: 500px;
  }

  .message-wrapper {
    max-width: 95%;
  }

  .quick-questions {
    flex-direction: column;
  }

  .quick-question-btn {
    min-width: auto;
  }
}

/* Scrollbar styling for chat messages */
.chat-messages::-webkit-scrollbar {
  width: 6px;
}

.chat-messages::-webkit-scrollbar-track {
  background: transparent;
}

.chat-messages::-webkit-scrollbar-thumb {
  background: #c1c1c1;
  border-radius: 3px;
}

.chat-messages::-webkit-scrollbar-thumb:hover {
  background: #a8a8a8;
}

.sources-list {
  display: grid;
  gap: 1rem;
}

.source-item {
  padding: 1rem;
  border: 1px solid #e9ecef;
  border-radius: 4px;
  background: #f8f9fa;
}

.source-item h6 {
  margin-bottom: 0.5rem;
  color: #333;
  font-weight: 600;
}

.source-url {
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
}

.source-url a {
  color: #0066cc;
  text-decoration: none;
}

.source-url a:hover {
  text-decoration: underline;
}

.source-desc {
  margin-bottom: 0;
  font-size: 0.9rem;
  color: #6c757d;
}