/* Modern Styles for arXivCSRAG Application - 2025 Edition */

/* Color Scheme & Variables */
:root {
  /* Core colors */
  --primary: #4361ee;
  --primary-light: #4cc9f0;
  --primary-dark: #3a0ca3;
  --secondary: #4b4d63;
  --accent: #f72585;
  
  /* Neutral colors */
  --background: #f8f9fd;
  --surface: #ffffff;
  --surface-variant: #f0f2f9;
  
  /* Text colors */
  --text-primary: #1e1e2f;
  --text-secondary: #4b4d63;
  --text-tertiary: #6e7191;
  --text-on-primary: #ffffff;
  --text-on-accent: #ffffff;
  
  /* Status colors */
  --success: #06d6a0;
  --warning: #ffd166;
  --error: #ef476f;
  --info: #118ab2;
  
  /* Border colors */
  --border: #e2e8f0;
  --border-hover: #cbd5e1;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(30, 30, 47, 0.05);
  --shadow-md: 0 4px 8px rgba(30, 30, 47, 0.08);
  --shadow-lg: 0 8px 16px rgba(30, 30, 47, 0.1);
  
  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-8: 3rem;
  
  /* Dimensions */
  --header-height: 70px;
  --border-radius-sm: 6px;
  --border-radius-md: 8px;
  --border-radius-lg: 12px;
  --border-radius-xl: 16px;
  
  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  --font-mono: 'JetBrains Mono', SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  
  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Color variable for RGB usage */
  --primary-rgb: 67, 97, 238;
}

/* Base Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  line-height: 1.5;
  color: var(--text-primary);
  background-color: var(--background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  margin: 0;
  padding: 0;
  min-height: 100vh;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
  color: var(--text-primary);
  margin-bottom: var(--space-4);
}

h1 {
  font-size: 2.25rem;
  letter-spacing: -0.025em;
}

h2 {
  font-size: 1.75rem;
  letter-spacing: -0.0125em;
}

h3 {
  font-size: 1.5rem;
}

h4 {
  font-size: 1.25rem;
}

p {
  margin-bottom: var(--space-4);
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--primary-dark);
}

/* Layout */
.app-container {
  max-width: 1600px;
  margin: 0 auto;
  padding: 0 var(--space-4);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header */
header {
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  /* padding: 0 var(--space-5); */
  border-bottom: 1px solid var(--border);
  background-color: var(--surface);
}

.header-content {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.header-content h1 {
  color: var(--primary);
  margin-bottom: 0;
  font-weight: 700;
}

.header-content p {
  color: var(--text-tertiary);
  margin-bottom: 0;
  font-size: 3rem;
  position: relative;
  top: 2px;
}

/* Main Content */
main {
  padding: var(--space-5) 0;
  flex: 1;
}

.content-row {
  display: flex;
  gap: var(--space-5);
  height: calc(100vh - var(--header-height) - var(--space-5) * 2 - 60px); /* 60px for footer */
}

.panel {
  background-color: var(--surface);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.left-panel {
  flex: 1;
  min-width: 0; /* Prevents flex items from overflowing */
}

.right-panel {
  flex: 1;
  min-width: 0;
}

/* Nav Tabs */
.nav-tabs {
  display: flex;
  border-bottom: 1px solid var(--border);
  background-color: var(--surface-variant);

  min-height: 76px; /* Increase height while maintaining flexibility */
  align-items: center; /* Vertically center the nav links */
}

.nav-link {
  /* padding: var(--space-4) var(--space-5); */
  padding-top: 0.8rem;
  padding-bottom: 0.8rem;
  padding-left: 0.6rem;
  padding-right: 0.6rem;
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-tertiary);
  border: none;
  background: transparent;
  cursor: pointer;
  position: relative;
  transition: color var(--transition-fast);

  height: 100%; /* Make links fill the height of nav-tabs */
  /* display: flex; */
  align-items: center;
}

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

.nav-link.active {
  color: var(--primary);
  font-weight: 600;
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--primary);
}

/* Tab Content */
.tab-content {
  flex: 1;
  overflow: auto;
  padding: var(--space-5);
}

.tab-pane {
  display: none;
}

.tab-pane.active {
  display: block;
}

/* Search Form */
.search-section {
  margin-bottom: var(--space-5);
}

.search-section h2 {
  font-size: 1.25rem;
  margin-bottom: var(--space-4);
  color: var(--text-primary);
}

.filters-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.6fr;
  /* gap: var(--space-4); */
  /* row-gap: 0.5rem; */
  column-gap: 1rem;
  /* margin-bottom: var(--space-5); */
  margin-bottom: 0.3rem;
}

.filter-group {
  margin-bottom: var(--space-4);
}

.filter-group label {
  display: block;
  margin-bottom: var(--space-2);
  font-weight: 500;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.form-control {
  width: 100%;
  padding: var(--space-3);
  border: 1px solid var(--border);
  border-radius: var(--border-radius-sm);
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  background-color: var(--surface);
  color: var(--text-primary);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-light);
  box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.15);
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%234b4d63' 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 0.75rem center;
  background-size: 1rem;
  padding-right: 2.5rem;
}

.date-range-inputs {
  display: flex;
  gap: var(--space-3);

  flex-direction: column;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3) var(--space-4);
  font-weight: 500;
  font-size: 0.9375rem;
  border-radius: var(--border-radius-sm);
  border: none;
  cursor: pointer;
  transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  background-color: var(--primary);
  color: var(--text-on-primary);
}

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

.btn-secondary {
  background-color: var(--surface-variant);
  color: var(--text-secondary);
}

.btn-secondary:hover {
  background-color: var(--border);
}

.btn-outline {
  background-color: transparent;
  border: 1px solid var(--border);
  color: var(--text-secondary);
}

.btn-outline:hover {
  background-color: var(--surface-variant);
}

.btn i {
  margin-right: var(--space-2);
}

.search-btn {
  width: 100%;
  /* margin-top: var(--space-4); */
}

.upload-section {
  border-top: 1px solid var(--border);
  padding-top: var(--space-4);
  margin-top: 1rem;
}

.upload-section p {
  margin-bottom: var(--space-3);
  font-size: 0.9375rem;
  font-weight: 500;
}

.upload-container {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.file-input-wrapper {
  position: relative;
  overflow: hidden;
  display: inline-block;
  width: 100%;
}

.file-input-button {
  display: flex;
  align-items: center;
  gap: 8px;
  background-color: var(--surface-variant);
  color: var(--primary);
  border: 2px dashed var(--primary-light);
  border-radius: var(--border-radius-sm);
  padding: 12px 16px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  width: 100%;
  justify-content: center;
}

.file-input-button:hover {
  background-color: rgba(67, 97, 238, 0.05);
  border-color: var(--primary);
}

.file-input-button i {
  font-size: 1.2rem;
}

.file-name-display {
  margin-top: 8px;
  padding: 8px 12px;
  background-color: var(--surface-variant);
  border-radius: var(--border-radius-sm);
  font-size: 0.875rem;
  display: none;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  border: 1px solid var(--border);
}

.file-name-display.active {
  display: flex;
}

.file-name-display i {
  color: var(--success);
  flex-shrink: 0;
  font-size: 1rem;
}

.file-name-display span {
  overflow: hidden;
  text-overflow: ellipsis;
  font-weight: 500;
}

#pdf-upload {
  position: absolute;
  left: 0;
  top: 0;
  opacity: 0;
  width: 100%;
  height: 100%;
  cursor: pointer;
}

#upload-button {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 16px;
}

#upload-button.file-selected {
  background-color: var(--success);
  border-color: var(--success);
}

#upload-button i {
  font-size: 1.1rem;
}

/* Results List */
.results-container {
  padding-top: var(--space-2);
}

.no-results {
  text-align: center;
  color: var(--text-tertiary);
  padding: var(--space-8) 0;
}

.paper-item {
  border: 1px solid var(--border);
  border-radius: var(--border-radius-md);
  padding: var(--space-4);
  margin-bottom: var(--space-4);
  cursor: pointer;
  transition: border-color var(--transition-normal), box-shadow var(--transition-normal), transform var(--transition-normal);
}

.paper-item:hover {
  border-color: var(--primary-light);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.paper-item-header {
  display: flex;
  justify-content: space-between;
  margin-bottom: var(--space-3);
}

.paper-title {
  font-weight: 600;
  color: var(--primary);
  margin-bottom: var(--space-2);
  font-size: 1.0625rem;

  flex: 1;
  margin-right: var(--space-3); /* Tạo khoảng cách với date */
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.paper-date {
  color: var(--text-tertiary);
  font-size: 0.875rem;
}

.paper-authors {
  margin-bottom: var(--space-3);
  font-size: 0.9375rem;
  color: var(--text-secondary);
}

.paper-categories {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-3);
}

.paper-category {
  background-color: var(--surface-variant);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--border-radius-sm);
  font-size: 0.75rem;
  color: var(--text-tertiary);
}

/* Chat Interface */
.chat-panel {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.chat-header {
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: var(--surface-variant);
}

.chat-header h2 {
  margin-bottom: 0;
  font-size: 1.25rem;
}

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.system-message {
  text-align: center;
  /* padding: var(--space-8) var(--space-4); */
  color: var(--text-tertiary);
}

.message {
  max-width: 85%;
  word-wrap: break-word;
}

.user-message {
  align-self: flex-end;
  background-color: var(--primary);
  color: var(--text-on-primary);
  border-radius: var(--border-radius-lg) var(--border-radius-lg) 0 var(--border-radius-lg);
  padding: var(--space-3) var(--space-4);
  box-shadow: var(--shadow-sm);
}

.bot-message {
  align-self: flex-start;
  background-color: var(--surface-variant);
  border-radius: var(--border-radius-lg) var(--border-radius-lg) var(--border-radius-lg) 0;
  padding: var(--space-3) var(--space-4);
  box-shadow: var(--shadow-sm);
}

.citations {
  margin-top: var(--space-2);
  font-size: 0.75rem;
  color: var(--text-tertiary);
  border-top: 1px solid var(--border);
  padding-top: var(--space-2);
}

.citations-header {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  margin-bottom: var(--space-2);
}

.view-all-citations-btn {
  background-color: transparent;
  color: var(--primary);
  border: 1px solid var(--primary);
  border-radius: var(--border-radius-sm);
  padding: 3px 10px;
  font-size: 0.8rem;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}

.view-all-citations-btn:hover {
  background-color: var(--primary);
  color: var(--text-on-primary);
}

.chat-input-container {
  padding: var(--space-4);
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

#chat-input {
  resize: none;
  flex: 1;
  border-radius: var(--border-radius-lg);
  padding: var(--space-3) var(--space-4);
  min-height: 54px;
  max-height: 150px;

  /* căn giữa nội dung/placeholder theo chiều dọc */
  display: flex;
  align-items: center;
}

#send-message-btn {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  padding: 0;
  flex-shrink: 0;
}

#send-message-btn i {
  margin-right: 0;
  font-size: 1.25rem;
  flex: 1;
}

/* Modals */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(30, 30, 47, 0.5);
  backdrop-filter: blur(4px);
  z-index: 1000;
  overflow: auto;
  padding: var(--space-4);
}

.modal-content {
  background-color: var(--surface);
  margin: var(--space-6) auto;
  width: 92%;
  max-width: 1000px;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  animation: modalOpen 0.3s ease forwards;
  overflow: hidden;
  max-height: calc(100vh - 60px);
  display: flex;
  flex-direction: column;
}

@keyframes modalOpen {
  from {
    opacity: 0;
    transform: translateY(-20px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.modal-header {
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-header h3 {
  margin-bottom: 0;
  font-size: 1.25rem;
}

.close-modal {
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-tertiary);
  transition: color var(--transition-fast);
  line-height: 1;
}

.close-modal:hover {
  color: var(--error);
}

.modal-body {
  padding: var(--space-5);
  overflow-y: auto;
  flex: 1;
}

.modal-footer {
  padding: var(--space-4) var(--space-5);
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: flex-end;
  gap: var(--space-3);
}

.form-group {
  margin-bottom: var(--space-4);
}

.form-group label {
  display: block;
  margin-bottom: var(--space-2);
  font-weight: 500;
}

.paper-metadata p {
  margin-bottom: var(--space-3);
}

.paper-abstract {
  margin-top: var(--space-5);
  padding-top: var(--space-4);
  border-top: 1px solid var(--border);
}

.paper-abstract h4 {
  margin-bottom: var(--space-3);
  color: var(--text-secondary);
}

/* Loading Overlay */
.loading-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(30, 30, 47, 0.7);
  backdrop-filter: blur(4px);
  z-index: 2000;
  justify-content: center;
  align-items: center;
}

.spinner-container {
  text-align: center;
  color: white;
  max-width: 200px;

  /* Fix alignment */
  display: flex;
  flex-direction: column; /* Dọc: spinner trên, text dưới */
  align-items: center;     /* Căn giữa ngang */
  justify-content: center; /* Căn giữa dọc */
}

.spinner-border {
  width: 3rem;
  height: 3rem;
  border: 0.25rem solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: white;
  animation: spinner 0.8s linear infinite;
}

.spinner-text {
  margin-top: var(--space-4);
  font-size: 1rem;
  font-weight: 500;
  
  max-width: 120px;
  word-wrap: break-word;      /* Xuống dòng khi cần */
  text-align: center;         /* Căn giữa text khi wrap */
}

.spinner-border {
  width: 3rem;
  height: 3rem;
  border: 0.25rem solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: white;
  animation: spinner 0.8s linear infinite;
}

@keyframes spinner {
  to {
    transform: rotate(360deg);
  }
}

#loading-message {
  margin-top: var(--space-4);
  font-size: 1rem;
  font-weight: 500;
  width: 500px;
  text-align: center;
}

/* Citations Modal Styles */
.citation-query {
  font-style: italic;
  margin-bottom: var(--space-4);
  padding: var(--space-3);
  background-color: var(--surface-variant);
  border-left: 3px solid var(--primary);
  border-radius: var(--border-radius-sm);
  font-size: 1rem;
}

.citations-container {
  overflow-y: auto;
}

.citation-section {
  margin-bottom: var(--space-6);
  border-bottom: 1px solid var(--border);
  padding-bottom: var(--space-4);
}

.citation-section:last-child {
  border-bottom: none;
}

.citation-section h4 {
  color: var(--secondary);
  margin-bottom: var(--space-3);
  font-size: 1.1rem;
}

.citation-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.text-citation, .table-citation, .image-citation {
  display: flex;
  gap: var(--space-3);
  background-color: var(--surface-variant);
  border-radius: var(--border-radius-sm);
  padding: var(--space-3);
  box-shadow: var(--shadow-sm);
  align-items: flex-start;
  overflow: hidden;
  width: 100%;
}

.citation-number {
  background-color: var(--primary);
  color: var(--text-on-primary);
  width: 24px;
  height: 24px;
  min-width: 24px;
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 0.8rem;
  flex-shrink: 0;
}

.citation-text {
  line-height: 1.5;
  font-size: 0.9rem;
}

.citation-table-container {
  width: 100%;
  overflow-x: auto;
  max-width: calc(100% - 40px); /* Account for the citation number */
  border-radius: var(--border-radius-sm);
}

.citation-table {
  font-size: 0.9rem;
  overflow: hidden;
}

.citation-table table {
  border-collapse: collapse;
  width: 100%;
  max-width: 100%;
  table-layout: auto;
  margin: 0;
}

.citation-table th, .citation-table td {
  border: 1px solid var(--border);
  padding: 4px 8px;
  word-break: break-word;
}

.citation-table th {
  background-color: var(--surface-variant);
}

.citation-image-container {
  width: 100%;
  max-width: calc(100% - 40px); /* Account for the citation number */
  display: flex;
  justify-content: center;
  overflow: hidden;
  margin: 0 auto;
}

/* Citation Image Spinner */
.citation-image-loading {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100px;
    color: var(--text-tertiary);
}

.responsive-image {
  max-width: 100%;
  max-height: 280px;
  object-fit: contain;
  border-radius: var(--border-radius-sm);
  display: block;
}

/* Footer Styles */
.app-footer {
    /* padding: var(--space-4) var(--space-5); */
    /* background-color: var(--surface-variant); */
    border-top: 1px solid var(--border);
    margin-top: auto;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    /* max-width: 1200px; */
    /* margin: 0 auto; */
    /* font-size: 0.9rem; */
    color: var(--text-secondary);
    margin-bottom: 20px;
    margin-top: 10px;
}

.footer-content p {
    margin: 0;
    display: flex;
    align-items: center;
    height: 100%;
}

.github-link {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--primary);
    text-decoration: none;
    transition: color 0.2s ease;
}

.github-link:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

.github-link i {
    font-size: 1.1rem;
}

/* Tooltip Styles */
.tooltip-container {
    position: relative;
    display: inline-flex;
    /* align-items: center; */
}

.tooltip-icon {
    margin-left: var(--space-2);
    color: var(--text-tertiary);
    cursor: help;
    font-size: 1rem;
}

.tooltip-icon:hover {
    color: var(--primary);
}

.tooltip-text {
    visibility: hidden;
    position: absolute;
    z-index: 100;
    bottom: 125%;
    /* left: 20%; */
    transform: translateX(5%) translateY(100%);
    background-color: var(--text-primary);
    color: white;
    text-align: center;
    border-radius: var(--border-radius-sm);
    padding: var(--space-2) var(--space-3);
    width: max-content;
    max-width: 400px;
    font-size: 0.7rem;
    box-shadow: var(--shadow-md);
    opacity: 0;
    transition: opacity 0.3s;
}

/* .tooltip-text::after {
    content: "";
    position: absolute;
    top: 100%;
    left: 50%;
    margin-left: -5px;
    border-width: 5px;
    border-style: solid;
    border-color: var(--text-primary) transparent transparent transparent;
} */

.tooltip-container:hover .tooltip-text {
    visibility: visible;
    opacity: 1;
}

/* Memory feature styling */
.memory-info {
    display: block;
    margin-top: 10px;
    padding: 8px 12px;
    background-color: rgba(var(--primary-rgb), 0.1);
    border-left: 3px solid var(--primary);
    border-radius: 4px;
    font-style: italic;
    color: var(--primary-dark);
}

/* Responsive Styles */
@media (max-width: 1200px) {
  .filters-grid {
    grid-template-columns: 1fr;
  }
  
  .content-row {
    flex-direction: column;
    height: auto;
    gap: var(--space-4);
  }
  
  .panel {
    height: 600px;
  }
}

@media (max-width: 768px) {
  .header-content h1 {
    font-size: 1.75rem;
  }
  
  .header-content p {
    display: none;
  }
  
  .date-range-inputs {
    flex-direction: column;
  }
  
  .upload-container {
    flex-direction: column;
  }
  
  .modal-content {
    margin: var(--space-4) auto;
  }
}

@media (max-width: 576px) {
  :root {
    --space-5: 1.25rem;
  }
  
  .header-content h1 {
    font-size: 1.5rem;
  }
  
  .app-container {
    padding: 0 var(--space-3);
  }
  
  .panel {
    border-radius: var(--border-radius-md);
  }
  
  .chat-messages {
    padding: var(--space-3);
  }
}

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

.show {
  display: flex !important;
}

/* Add Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');
@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500&display=swap');