/* CSS Variables for colors */
:root {
  /* Base Tailwind Color Palette Aliases (keep for direct use or reference) */
  --tw-color-primary-50: #eff6ff;
  --tw-color-primary-100: #dbeafe;
  --tw-color-primary-200: #bfdbfe;
  --tw-color-primary-300: #93c5fd;
  --tw-color-primary-400: #60a5fa;
  --tw-color-primary-500: #3b82f6;
  --tw-color-primary-600: #2563eb;
  --tw-color-primary-700: #1d4ed8;
  --tw-color-primary-800: #1e40af;
  --tw-color-primary-900: #1e3a8a;
  --tw-color-primary-950: #172554;

  --tw-color-secondary-50: #f9fafb;
  --tw-color-secondary-100: #f3f4f6;
  --tw-color-secondary-200: #e5e7eb;
  --tw-color-secondary-300: #d1d5db;
  --tw-color-secondary-400: #9ca3af;
  --tw-color-secondary-500: #6b7280;
  --tw-color-secondary-600: #4b5563;
  --tw-color-secondary-700: #374151;
  --tw-color-secondary-800: #1f2937;
  --tw-color-secondary-900: #111827;
  --tw-color-secondary-950: #030712;

  --tw-color-success-50: #f0fdf4;
  --tw-color-success-100: #dcfce7;
  --tw-color-success-200: #bbf7d0;
  --tw-color-success-300: #86efac;
  --tw-color-success-400: #4ade80;
  --tw-color-success-500: #22c55e;
  --tw-color-success-600: #16a34a;
  --tw-color-success-700: #15803d;
  --tw-color-success-800: #166534;
  --tw-color-success-900: #14532d;
  --tw-color-success-950: #052e16;

  --tw-color-error-50: #fef2f2;
  --tw-color-error-100: #fee2e2;
  --tw-color-error-200: #fecaca;
  --tw-color-error-300: #fca5a5;
  --tw-color-error-400: #f87171;
  --tw-color-error-500: #ef4444;
  --tw-color-error-600: #dc2626;
  --tw-color-error-700: #b91c1c;
  --tw-color-error-800: #991b1b;
  --tw-color-error-900: #7f1d1d;
  --tw-color-error-950: #450a0a;

  --tw-color-warning-50: #fffbeb;
  --tw-color-warning-100: #fef3c7;
  --tw-color-warning-200: #fde68a;
  --tw-color-warning-300: #fcd34d;
  --tw-color-warning-400: #fbbf24;
  --tw-color-warning-500: #f59e0b;
  --tw-color-warning-600: #d97706;
  --tw-color-warning-700: #b45309;
  --tw-color-warning-800: #92400e;
  --tw-color-warning-900: #78350f;
  --tw-color-warning-950: #451a03;

  --tw-color-info-50: #ecfeff;
  --tw-color-info-100: #cffafe;
  --tw-color-info-200: #a5f3fc;
  --tw-color-info-300: #67e8f9;
  --tw-color-info-400: #22d3ee;
  --tw-color-info-500: #06b6d4;
  --tw-color-info-600: #0891b2;
  --tw-color-info-700: #0e7490;
  --tw-color-info-800: #155e75;
  --tw-color-info-900: #164e63;
  --tw-color-info-950: #083344;

  /* Semantic Color Tokens */
  --color-bg-surface: var(--tw-color-secondary-50); /* Light mode default surface */
  --color-bg-surface-alt: #ffffff; /* Alternative surface, e.g., cards */
  --color-bg-surface-hover: var(--tw-color-secondary-100);
  --color-bg-surface-active: var(--tw-color-secondary-200);
  --color-bg-primary: var(--tw-color-primary-500);
  --color-bg-secondary: var(--tw-color-secondary-500);

  --color-text-primary: var(--tw-color-secondary-900);
  --color-text-secondary: var(--tw-color-secondary-600);
  --color-text-placeholder: var(--tw-color-secondary-400);
  --color-text-on-primary: #ffffff;
  --color-text-on-secondary: #ffffff;
  --color-text-link: var(--tw-color-primary-600);
  --color-text-link-hover: var(--tw-color-primary-700);
  --color-text-error: var(--tw-color-error-600);
  --color-text-success: var(--tw-color-success-600);
  --color-text-warning: var(--tw-color-warning-700);
  --color-text-info: var(--tw-color-info-700);
  --color-text-on-success: #ffffff;
  --color-text-on-error: #ffffff;
  --color-text-on-warning: var(--tw-color-secondary-900);
  --color-text-on-info: #ffffff;

  --color-bg-success: var(--tw-color-success-500);
  --color-bg-success-light: var(--tw-color-success-100);
  --color-bg-error: var(--tw-color-error-500);
  --color-bg-error-light: var(--tw-color-error-100);
  --color-bg-warning: var(--tw-color-warning-500);
  --color-bg-warning-light: var(--tw-color-warning-100);
  --color-bg-info: var(--tw-color-info-500);
  --color-bg-info-light: var(--tw-color-info-100);

  --color-border-default: var(--tw-color-secondary-300);
  --color-border-strong: var(--tw-color-secondary-400);
  --color-focus-ring: var(--tw-color-primary-500);

  /* Spacing Scale (8-point system) */
  --space-0: 0;
  --space-1: 0.25rem; /* 4px */
  --space-2: 0.5rem; /* 8px */
  --space-3: 0.75rem; /* 12px */
  --space-4: 1rem; /* 16px */
  --space-5: 1.25rem; /* 20px */
  --space-6: 1.5rem; /* 24px */
  --space-7: 1.75rem; /* 28px */
  --space-8: 2rem; /* 32px */
  --space-9: 2.5rem; /* 40px */
  --space-10: 3rem; /* 48px */
  --space-11: 3.5rem; /* 56px */
  --space-12: 4rem; /* 64px */

  /* Elevation Tokens */
  --elev-0-shadow: none;
  --elev-1-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --elev-2-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --elev-3-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --elev-4-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

  /* State and Motion Tokens */
  --color-primary-hover: var(--tw-color-primary-600);
  --color-primary-active: var(--tw-color-primary-700);
  --color-secondary-hover: var(--tw-color-secondary-600);
  --color-secondary-active: var(--tw-color-secondary-700);
  --color-success-hover: var(--tw-color-success-600);
  --color-success-active: var(--tw-color-success-700);
  --color-error-hover: var(--tw-color-error-600);
  --color-error-active: var(--tw-color-error-700);
  --color-warning-hover: var(--tw-color-warning-600);
  --color-warning-active: var(--tw-color-warning-700);
  --color-info-hover: var(--tw-color-info-600);
  --color-info-active: var(--tw-color-info-700);
  /* Legacy alias for backward compatibility */
  --color-danger-hover: var(--color-error-hover);
  --color-danger-active: var(--color-error-active);

  --ease-standard: cubic-bezier(0.4, 0, 0.2, 1);
  --duration-ultrafast: 50ms;
  --duration-fast: 100ms;
  --duration-quick: 150ms; /* Existing transition duration */
  --duration-moderate: 250ms;
  --duration-slow: 400ms;

  /* Icon Sizes */
  --icon-size-xs: 0.75rem; /* 12px */
  --icon-size-sm: 1rem; /* 16px */
  --icon-size-md: 1.25rem; /* 20px */
  --icon-size-lg: 1.5rem; /* 24px */
}

.dark {
  /* Semantic Color Tokens - Dark Mode */
  --color-bg-surface: var(--tw-color-secondary-900);
  --color-bg-surface-alt: var(--tw-color-secondary-800);
  --color-bg-surface-hover: var(--tw-color-secondary-700);
  --color-bg-surface-active: var(--tw-color-secondary-600);
  /* --color-bg-primary remains the same or defined if different for dark */
  /* --color-bg-secondary remains the same or defined if different for dark */

  --color-text-primary: var(--tw-color-secondary-100);
  --color-text-secondary: var(--tw-color-secondary-400);
  --color-text-placeholder: var(--tw-color-secondary-500);
  /* --color-text-on-primary might need adjustment if primary bg changes in dark */
  /* --color-text-on-secondary might need adjustment if secondary bg changes in dark */
  --color-text-link: var(--tw-color-primary-400);
  --color-text-link-hover: var(--tw-color-primary-300);
  --color-text-error: var(--tw-color-error-400);
  --color-text-success: var(--tw-color-success-400);
  --color-text-warning: var(--tw-color-warning-400);
  --color-text-info: var(--tw-color-info-400);
  --color-text-on-success: #ffffff;
  --color-text-on-error: #ffffff;
  --color-text-on-warning: var(--tw-color-secondary-900);
  --color-text-on-info: #ffffff;

  --color-bg-success: var(--tw-color-success-500);
  --color-bg-success-light: var(--tw-color-success-900);
  --color-bg-error: var(--tw-color-error-500);
  --color-bg-error-light: var(--tw-color-error-900);
  --color-bg-warning: var(--tw-color-warning-500);
  --color-bg-warning-light: var(--tw-color-warning-900);
  --color-bg-info: var(--tw-color-info-500);
  --color-bg-info-light: var(--tw-color-info-900);

  --color-border-default: var(--tw-color-secondary-700);
  --color-border-strong: var(--tw-color-secondary-600);
  --color-focus-ring: var(--tw-color-primary-400);

  /* Elevation Tokens - Dark Mode (example: using overlays or different shadows) */
  /* For simplicity, we can keep shadows same, or adjust them if desired for dark mode */
  /* Example: --elev-1-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.5); */
  /* Or use overlays: https://material.io/design/color/dark-theme.html#properties */
}

/* Typography */

/* Fluid Heading Classes (Minor Third Scale: 1.200, Base: 1rem) */
.h1 {
  /* Approx 31px (desktop) to 24px (mobile) */
  font-size: clamp(1.5rem, 1.214rem + 1.143vw, 1.953rem); /* min @320px, max @1200px */
  font-weight: 700; /* Or a specific display font weight */
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
}
.h2 {
  /* Approx 26px to 21px */
  font-size: clamp(1.313rem, 1.107rem + 0.821vw, 1.628rem);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.015em;
  color: var(--color-text-primary);
}
.h3 {
  /* Approx 22px to 19px */
  font-size: clamp(1.188rem, 1.027rem + 0.643vw, 1.356rem);
  font-weight: 600; /* Semibold for h3 */
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--color-text-primary);
}
.h4 {
  /* Approx 19px to 17px */
  font-size: clamp(1.063rem, 0.964rem + 0.393vw, 1.13rem);
  font-weight: 600;
  line-height: 1.35;
  color: var(--color-text-primary);
}
/* .h5 and .h6 can be mapped to .text-lg, .text-base or defined if specific fluid behavior is needed */

/* Tailwind-like Text Size Utilities (already exist, ensure they use rem) */
.text-xs {
  font-size: 0.75rem;
  line-height: 1rem;
}

.text-sm {
  font-size: 0.875rem;
  line-height: 1.25rem;
}

.text-base {
  font-size: 1rem;
  line-height: 1.5rem;
}

.text-lg {
  font-size: 1.125rem;
  line-height: 1.75rem;
}

.text-xl {
  font-size: 1.25rem;
  line-height: 1.75rem;
}

.text-2xl {
  font-size: 1.5rem;
  line-height: 2rem;
}

.font-normal {
  font-weight: 400;
}

.font-medium {
  font-weight: 500;
}

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

.font-bold {
  font-weight: 700;
}

.leading-tight {
  line-height: 1.25;
}

.leading-snug {
  line-height: 1.375;
}

.leading-normal {
  line-height: 1.5;
}

.leading-relaxed {
  line-height: 1.625;
}

.leading-loose {
  line-height: 2;
}

/* Typography Aliases - Reference base heading classes */
.page-title {
  /* Alias to .h1 - inherits all h1 styles */
  font-size: clamp(1.5rem, 1.214rem + 1.143vw, 1.953rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
}

.section-title {
  /* Alias to .h2 - inherits all h2 styles */
  font-size: clamp(1.313rem, 1.107rem + 0.821vw, 1.628rem);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.015em;
  color: var(--color-text-primary);
}

.card-title {
  /* Alias to .h3 - inherits all h3 styles */
  font-size: clamp(1.188rem, 1.027rem + 0.643vw, 1.356rem);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--color-text-primary);
}

/* Removed unused typography utilities:
 * .subtitle, .body-text, .table-text, .helper-text
 * Use Tailwind's built-in text utilities instead:
 * .text-lg, .text-base, .text-sm, .text-xs, etc.
 */

/* Documentation Prose Styles */
.prose {
  color: inherit;
  max-width: none;
}

.prose h1 {
  font-size: 1.875rem;
  font-weight: 700;
  color: var(--tw-color-secondary-900);
  margin-bottom: 1.5rem;
  margin-top: 2rem;
}

.dark .prose h1 {
  color: var(--tw-color-secondary-100);
}

.prose h2 {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--tw-color-secondary-800);
  margin-top: 2rem;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--tw-color-secondary-200);
}

.dark .prose h2 {
  color: var(--tw-color-secondary-200);
  border-bottom-color: var(--tw-color-secondary-700);
}

.prose h3 {
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--tw-color-secondary-800);
  margin-top: 1.5rem;
  margin-bottom: 0.75rem;
}

.dark .prose h3 {
  color: var(--tw-color-secondary-200);
}

.prose h4 {
  font-size: 1.125rem;
  font-weight: 500;
  color: var(--tw-color-secondary-800);
  margin-top: 1rem;
  margin-bottom: 0.5rem;
}

.dark .prose h4 {
  color: var(--tw-color-secondary-200);
}

.prose h5 {
  font-size: 1rem;
  font-weight: 500;
  color: var(--tw-color-secondary-800);
  margin-top: 1rem;
  margin-bottom: 0.5rem;
}

.dark .prose h5 {
  color: var(--tw-color-secondary-200);
}

.prose h6 {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--tw-color-secondary-800);
  margin-top: 1rem;
  margin-bottom: 0.5rem;
}

.dark .prose h6 {
  color: var(--tw-color-secondary-200);
}

.prose p {
  color: var(--tw-color-secondary-700);
  margin-bottom: 1rem;
  line-height: 1.625;
}

.dark .prose p {
  color: var(--tw-color-secondary-300);
}

.prose ul,
.prose ol {
  color: var(--tw-color-secondary-700);
  margin-bottom: 1rem;
  padding-left: 1.5rem;
}

.dark .prose ul,
.dark .prose ol {
  color: var(--tw-color-secondary-300);
}

.prose ul {
  list-style-type: disc;
}

.prose ol {
  list-style-type: decimal;
}

.prose li {
  margin-bottom: 0.5rem;
}

.prose li p {
  margin-bottom: 0.5rem;
}

.prose ul ul,
.prose ol ol,
.prose ul ol,
.prose ol ul {
  margin-top: 0.5rem;
  margin-bottom: 0.5rem;
}

.prose strong {
  color: var(--tw-color-secondary-900);
  font-weight: 600;
}

.dark .prose strong {
  color: var(--tw-color-secondary-100);
}

.prose em {
  font-style: italic;
}

.prose code {
  background-color: var(--tw-color-secondary-100);
  color: var(--tw-color-secondary-800);
  padding: 0.125rem 0.25rem;
  border-radius: 0.25rem;
  font-size: 0.875rem;
  font-family: ui-monospace, SFMono-Regular, 'SF Mono', Consolas, 'Liberation Mono', Menlo, monospace;
  box-shadow: none;
}

.dark .prose code {
  background-color: var(--tw-color-secondary-800);
  color: var(--tw-color-secondary-200);
  box-shadow: none;
}

.prose pre {
  background-color: var(--tw-color-secondary-100);
  border: 1px solid var(--tw-color-secondary-200);
  border-radius: 0.5rem;
  padding: 1rem;
  overflow-x: auto;
  margin-bottom: 1.5rem;
  font-family: ui-monospace, SFMono-Regular, 'SF Mono', Consolas, 'Liberation Mono', Menlo, monospace;
}

.dark .prose pre {
  background-color: var(--tw-color-secondary-900);
  border-color: var(--tw-color-secondary-700);
}

.prose pre code {
  background-color: transparent;
  padding: 0;
  color: var(--tw-color-secondary-800);
}

.dark .prose pre code {
  color: var(--tw-color-secondary-300);
}

.prose a {
  color: var(--tw-color-primary-600);
  text-decoration: underline;
  text-decoration-color: transparent;
  transition: all 150ms cubic-bezier(0.4, 0, 0.2, 1);
}

.prose a:hover {
  color: var(--tw-color-primary-700);
  text-decoration-color: currentColor;
}

.dark .prose a {
  color: var(--tw-color-primary-400);
}

.dark .prose a:hover {
  color: var(--tw-color-primary-300);
}

.prose blockquote {
  border-left: 4px solid var(--tw-color-primary-500);
  padding-left: 1rem;
  padding-top: 0.5rem;
  padding-bottom: 0.5rem;
  background-color: var(--tw-color-primary-50);
  color: var(--tw-color-secondary-700);
  font-style: italic;
  margin-bottom: 1rem;
  border-radius: 0 0.25rem 0.25rem 0;
}

.dark .prose blockquote {
  background-color: rgba(59, 130, 246, 0.1);
  color: var(--tw-color-secondary-300);
}

.prose table {
  width: 100%;
  border-collapse: collapse;
  border: 1px solid var(--tw-color-secondary-200);
  margin-bottom: 1.5rem;
}

.dark .prose table {
  border-color: var(--tw-color-secondary-700);
}

.prose th,
.prose td {
  border: 1px solid var(--tw-color-secondary-200);
  padding: 0.75rem 1rem;
  text-align: left;
}

.dark .prose th,
.dark .prose td {
  border-color: var(--tw-color-secondary-700);
}

.prose th {
  background-color: var(--tw-color-secondary-50);
  font-weight: 600;
  color: var(--tw-color-secondary-900);
}

.dark .prose th {
  background-color: var(--tw-color-secondary-800);
  color: var(--tw-color-secondary-100);
}

.prose hr {
  border: none;
  border-top: 1px solid var(--tw-color-secondary-200);
  margin: 2rem 0;
}

.dark .prose hr {
  border-top-color: var(--tw-color-secondary-700);
}

/* Syntax highlighting improvements */
.prose .highlight {
  border-radius: 0.5rem;
}

.prose .highlight pre {
  border: 0;
  background-color: transparent;
}

/* Documentation specific layouts */

.docs-sidebar {
  width: 100%;
}

.docs-content {
  width: 100%;
  min-width: 0;
}

@media (min-width: 1024px) {
  .docs-sidebar {
    width: 25%;
    flex-shrink: 0;
  }

  .docs-content {
    width: 75%;
  }
}

.docs-nav {
  background-color: white;
  border-radius: 0.5rem;
  box-shadow:
    0 1px 3px 0 rgba(0, 0, 0, 0.1),
    0 1px 2px 0 rgba(0, 0, 0, 0.06);
  padding: 1.5rem;
  position: sticky;
  top: 1rem;
}

.dark .docs-nav {
  background-color: var(--tw-color-secondary-800);
}

.docs-nav-title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--tw-color-secondary-900);
}

.dark .docs-nav-title {
  color: var(--tw-color-secondary-100);
}

.docs-nav-section {
  margin-bottom: 1rem;
}

.docs-nav-section-title {
  font-weight: 500;
  color: var(--tw-color-secondary-800);
  margin-bottom: 0.5rem;
}

.dark .docs-nav-section-title {
  color: var(--tw-color-secondary-200);
}

.docs-nav-link {
  display: block;
  font-size: 0.875rem;
  color: var(--tw-color-secondary-600);
  padding: 0.25rem 0;
  transition: color 150ms cubic-bezier(0.4, 0, 0.2, 1);
}

.docs-nav-link:hover {
  color: var(--tw-color-primary-600);
}

.dark .docs-nav-link {
  color: var(--tw-color-secondary-400);
}

.dark .docs-nav-link:hover {
  color: var(--tw-color-primary-400);
}

.docs-nav-link.active {
  color: var(--tw-color-primary-600);
  font-weight: 500;
}

.dark .docs-nav-link.active {
  color: var(--tw-color-primary-400);
}

.docs-breadcrumb {
  margin-bottom: 1.5rem;
}

.docs-breadcrumb-list {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--tw-color-secondary-600);
}

.dark .docs-breadcrumb-list {
  color: var(--tw-color-secondary-400);
}

.docs-breadcrumb-link {
  color: inherit;
  transition: color 150ms cubic-bezier(0.4, 0, 0.2, 1);
}

.docs-breadcrumb-link:hover {
  color: var(--tw-color-primary-600);
}

.dark .docs-breadcrumb-link:hover {
  color: var(--tw-color-primary-400);
}

.docs-breadcrumb-current {
  color: var(--tw-color-secondary-900);
  font-weight: 500;
}

.dark .docs-breadcrumb-current {
  color: var(--tw-color-secondary-100);
}

.docs-footer {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--tw-color-secondary-200);
}

.dark .docs-footer {
  border-top-color: var(--tw-color-secondary-700);
}

/* Button Base */
.btn {
  font-weight: 500; /* Consider a token if font weights are tokenized */
  border-radius: var(--space-1); /* Assuming --space-1 is 0.25rem */
  padding: var(--space-2) var(--space-4);
  transition-property: background-color, border-color, color, box-shadow, opacity;
  transition-duration: var(--duration-quick);
  transition-timing-function: var(--ease-standard);
  display: inline-flex; /* Changed from flex to inline-flex for better flow with text */
  align-items: center;
  justify-content: center; /* Center content by default */
  cursor: pointer;
  border: 1px solid transparent; /* Default border for all buttons */
  text-decoration: none; /* Remove underline from <a> tags styled as buttons */
  white-space: nowrap; /* Prevent wrapping */
}

.btn:focus-visible {
  outline: 2px solid var(--color-focus-ring);
  outline-offset: 2px;
}
.btn:focus:not(:focus-visible) {
  outline: none;
}

/* Default Button Appearance (subtle, like a secondary/ghost) */
.btn {
  background-color: transparent;
  color: var(--color-text-link);
  border-color: var(--color-border-default);
}
.btn:hover {
  background-color: var(--color-bg-surface-hover);
  border-color: var(--color-border-strong);
}
.btn:active {
  background-color: var(--color-bg-surface-active);
}

/* Filled Button Styles */
.btn[data-variant='primary'] {
  background-color: var(--color-bg-primary);
  color: var(--color-text-on-primary);
  border-color: var(--color-bg-primary);
}
.btn[data-variant='primary']:hover {
  background-color: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
}
.btn[data-variant='primary']:active {
  background-color: var(--color-primary-active);
  border-color: var(--color-primary-active);
}

.btn[data-variant='secondary'] {
  background-color: var(--color-bg-surface-hover);
  color: var(--color-text-secondary);
  border-color: var(--color-border-default);
}
.btn[data-variant='secondary']:hover {
  background-color: var(--color-bg-surface-active);
  border-color: var(--color-border-strong);
}
.btn[data-variant='secondary']:active {
  background-color: var(--color-secondary-active);
  border-color: var(--color-border-strong);
}
/* For dark mode, secondary button often uses a lighter bg if --color-bg-secondary is dark */
.dark .btn[data-variant='secondary'] {
  background-color: var(--color-bg-surface-hover);
  color: var(--color-text-primary);
  border-color: var(--color-border-default);
}
.dark .btn[data-variant='secondary']:hover {
  background-color: var(--color-bg-surface-active);
  border-color: var(--color-border-strong);
}
.dark .btn[data-variant='secondary']:active {
  background-color: var(--color-secondary-active);
  border-color: var(--color-border-strong);
}

.btn[data-variant='success'] {
  background-color: var(--color-bg-success);
  color: var(--color-text-on-success);
  border-color: var(--color-bg-success);
}
.btn[data-variant='success']:hover {
  background-color: var(--color-success-hover);
  border-color: var(--color-success-hover);
}
.btn[data-variant='success']:active {
  background-color: var(--color-success-active);
  border-color: var(--color-success-active);
}

.btn[data-variant='danger'] {
  background-color: var(--color-bg-error);
  color: var(--color-text-on-error);
  border-color: var(--color-bg-error);
}
.btn[data-variant='danger']:hover {
  background-color: var(--color-error-hover);
  border-color: var(--color-error-hover);
}
.btn[data-variant='danger']:active {
  background-color: var(--color-error-active);
  border-color: var(--color-error-active);
}

.btn[data-variant='warning'] {
  background-color: var(--color-bg-warning);
  color: var(--color-text-on-warning);
  border-color: var(--color-bg-warning);
}
.dark .btn[data-variant='warning'] {
  color: var(--color-text-on-warning); /* Use semantic token */
}
.btn[data-variant='warning']:hover {
  background-color: var(--color-warning-hover);
  border-color: var(--color-warning-hover);
}
.btn[data-variant='warning']:active {
  background-color: var(--color-warning-active);
  border-color: var(--color-warning-active);
}

.btn[data-variant='info'] {
  background-color: var(--color-bg-info);
  color: var(--color-text-on-info);
  border-color: var(--color-bg-info);
}
.btn[data-variant='info']:hover {
  background-color: var(--color-info-hover);
  border-color: var(--color-info-hover);
}
.btn[data-variant='info']:active {
  background-color: var(--color-info-active);
  border-color: var(--color-info-active);
}

/* Outline Button Styles */
.btn[data-style='outline'] {
  background-color: transparent;
  /* Default outline uses text-link color and border-default */
  color: var(--color-text-link);
  border-color: var(--color-border-default);
}
.btn[data-style='outline']:hover {
  background-color: var(--color-bg-surface-hover);
  border-color: var(--color-border-strong);
}
.btn[data-style='outline']:active {
  background-color: var(--color-bg-surface-active);
}

.btn[data-variant='primary'][data-style='outline'] {
  color: var(--color-text-link);
  border-color: var(--color-text-link);
}
.btn[data-variant='primary'][data-style='outline']:hover {
  background-color: var(--color-bg-primary);
  color: var(--color-text-on-primary);
  border-color: var(--color-bg-primary);
}
.dark .btn[data-variant='primary'][data-style='outline'] {
  color: var(--tw-color-primary-400); /* Use the link color for dark mode */
  border-color: var(--tw-color-primary-400);
}
.dark .btn[data-variant='primary'][data-style='outline']:hover {
  background-color: var(--tw-color-primary-400);
  color: var(--tw-color-secondary-900); /* Dark text on light primary bg */
  border-color: var(--tw-color-primary-400);
}

.btn[data-variant='secondary'][data-style='outline'] {
  color: var(--color-text-secondary);
  border-color: var(--color-border-default);
}
.dark .btn[data-variant='secondary'][data-style='outline'] {
  color: var(--tw-color-secondary-400);
  border-color: var(--tw-color-secondary-600);
}
.btn[data-variant='secondary'][data-style='outline']:hover {
  background-color: var(--tw-color-secondary-200); /* Light secondary background */
  color: var(--tw-color-secondary-800);
  border-color: var(--tw-color-secondary-300);
}
.dark .btn[data-variant='secondary'][data-style='outline']:hover {
  background-color: var(--tw-color-secondary-700);
  color: var(--tw-color-secondary-100);
  border-color: var(--tw-color-secondary-600);
}

.btn[data-variant='danger'][data-style='outline'] {
  color: var(--color-text-error);
  border-color: var(--color-text-error);
}
.btn[data-variant='danger'][data-style='outline']:hover {
  background-color: var(--tw-color-error-500);
  color: var(--color-text-on-primary);
  border-color: var(--tw-color-error-500);
}
.dark .btn[data-variant='danger'][data-style='outline'] {
  color: var(--tw-color-error-400);
  border-color: var(--tw-color-error-400);
}
.dark .btn[data-variant='danger'][data-style='outline']:hover {
  background-color: var(--tw-color-error-400);
  color: var(--tw-color-secondary-900);
  border-color: var(--tw-color-error-400);
}

/* Ghost Button Styles */
.btn[data-style='ghost'] {
  background-color: transparent;
  border-color: transparent;
  color: var(--color-text-link);
}
.btn[data-style='ghost']:hover {
  background-color: var(--color-bg-surface-hover);
}
.btn[data-style='ghost']:active {
  background-color: var(--color-bg-surface-active);
}

.btn[data-variant='danger'][data-style='ghost'] {
  color: var(--color-text-error);
}
.btn[data-variant='danger'][data-style='ghost']:hover {
  background-color: var(--tw-color-error-100); /* Light error bg on hover */
}
.dark .btn[data-variant='danger'][data-style='ghost']:hover {
  background-color: var(--tw-color-error-900); /* Darker error bg on hover */
  color: var(--tw-color-error-300);
}

/* Link Button Styles */
.btn[data-style='link'] {
  background-color: transparent;
  border-color: transparent;
  color: var(--color-text-link);
  padding-left: var(--space-1); /* Less padding for link-like buttons */
  padding-right: var(--space-1);
}
.btn[data-style='link']:hover {
  color: var(--color-text-link-hover);
  text-decoration: underline;
  background-color: transparent; /* Ensure no bg on hover */
}

/* Button Sizes */
.btn-sm {
  padding: var(--space-1) var(--space-3);
  font-size: 0.875rem; /* text-sm */
}

.btn-lg {
  padding: var(--space-3) var(--space-6);
  font-size: 1.125rem; /* text-lg */
}

/* Disabled state for all buttons */
.btn:disabled,
.btn[disabled] {
  opacity: 0.5;
  cursor: not-allowed;
}
.btn[data-style='outline']:disabled:hover,
.btn[data-style='ghost']:disabled:hover,
.btn[data-style='link']:disabled:hover {
  background-color: transparent; /* Prevent hover background on disabled outline/ghost/link buttons */
}

/* Loading State */
.btn.btn-loading {
  pointer-events: none;
  position: relative;
  opacity: 0.75;
  /* Consider adding a spinner later */
}

/* Icon Button */
.btn.icon-btn {
  padding: var(--space-2); /* Adjust padding as needed */
  min-width: var(--space-9); /* 40px tap target */
  min-height: var(--space-9); /* 40px tap target */
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  /* Default to rounded for circular icon buttons, can be overridden by .rounded-md etc. from .btn if square is desired */
  border-radius: var(--border-radius-full, 9999px);
}

.btn.icon-btn[data-style='outline'] {
  padding: calc(var(--space-2) - 1px); /* Adjust padding to account for border */
}

.btn.icon-btn[data-style='filled'] {
  /* Filled icon buttons might want slightly different padding or look */
}

.btn.icon-btn > [data-lucide] {
  width: var(--icon-size-md); /* Default: 20px icon */
  height: var(--icon-size-md);
}

.btn.icon-btn.icon-sm > [data-lucide] {
  /* For smaller icons in an icon button */
  width: var(--icon-size-sm); /* 16px icon */
  height: var(--icon-size-sm);
}
.btn.icon-btn.icon-lg > [data-lucide] {
  /* For larger icons in an icon button */
  width: var(--icon-size-lg); /* 24px icon */
  height: var(--icon-size-lg);
}

/* Form inputs */
.form-input,
.form-textarea {
  width: 100%;
  border-width: 1px;
  border-radius: var(--space-1); /* Assuming 0.25rem */
  padding: var(--space-2) var(--space-3);
  transition-property: color, background-color, border-color, box-shadow;
  transition-duration: var(--duration-quick);
  transition-timing-function: var(--ease-standard);
  border-color: var(--color-border-default);
  background-color: var(--color-bg-surface-alt);
  color: var(--color-text-primary);
  font-size: inherit; /* For .form-input */
}
.form-textarea {
  resize: vertical;
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-text-placeholder);
}

.form-input:focus-visible,
.form-textarea:focus-visible {
  outline: none;
  border-color: var(--color-focus-ring);
  box-shadow: 0 0 0 2px var(--color-focus-ring);
}
.form-input:focus:not(:focus-visible),
.form-textarea:focus:not(:focus-visible) {
  outline: none; /* Remove default outline if not focus-visible */
}

.dark .form-input,
.dark .form-textarea {
  border-color: var(--color-border-default); /* Uses dark mode token */
  background-color: var(--color-bg-surface-alt); /* Uses dark mode token */
  color: var(--color-text-primary); /* Uses dark mode token */
}

.dark .form-input::placeholder,
.dark .form-textarea::placeholder {
  color: var(--color-text-placeholder); /* Uses dark mode token */
}

/* Form select */
.form-select {
  width: 100%;
  border-width: 1px;
  border-radius: var(--space-1);
  padding: var(--space-2) var(--space-3);
  padding-right: var(--space-8); /* Space for arrow */
  transition-property: color, background-color, border-color, box-shadow;
  transition-duration: var(--duration-quick);
  transition-timing-function: var(--ease-standard);
  border-color: var(--color-border-default);
  background-color: var(--color-bg-surface-alt);
  color: var(--color-text-primary);
  font-size: inherit;
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='currentColor' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
  background-position: right var(--space-2) center;
  background-repeat: no-repeat;
  background-size: 1.5em 1.5em; /* Adjust size if needed */
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
}

.form-select:focus-visible {
  outline: none;
  border-color: var(--color-focus-ring);
  box-shadow: 0 0 0 2px var(--color-focus-ring);
}
.form-select:focus:not(:focus-visible) {
  outline: none;
}

.dark .form-select {
  border-color: var(--color-border-default);
  background-color: var(--color-bg-surface-alt);
  color: var(--color-text-primary);
  /* SVG uses currentColor, so it will adapt. If specific color needed for dark arrow: */
  /* background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='var(--color-text-secondary)' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e"); */
}

/* Link styling */
.link {
  color: var(--color-text-link);
  transition-property: color;
  transition-duration: var(--duration-quick);
  transition-timing-function: var(--ease-standard);
  text-decoration: none; /* Usually links have underline by default, but can be added on hover */
}

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

/* Markdown Content Styling */
.markdown-content {
  line-height: 1.6;
}

.markdown-content h1 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-top: 1.5rem;
  margin-bottom: 1rem;
}

.markdown-content h2 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-top: 1.25rem;
  margin-bottom: 0.75rem;
}

.markdown-content h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-top: 1rem;
  margin-bottom: 0.5rem;
}

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

.markdown-content ul,
.markdown-content ol {
  margin-top: 0.5rem;
  margin-bottom: 0.5rem;
  padding-left: 1.5rem;
}

.markdown-content ul {
  list-style-type: disc;
}

.markdown-content ol {
  list-style-type: decimal;
}

.markdown-content li {
  margin-bottom: 0.25rem;
}

.markdown-content a {
  color: var(--tw-color-primary-600);
  text-decoration: underline;
}

.dark .markdown-content a {
  color: var(--tw-color-primary-400);
}

.markdown-content blockquote {
  border-left: 4px solid var(--tw-color-secondary-300);
  padding-left: 1rem;
  margin-left: 0;
  margin-right: 0;
  font-style: italic;
  color: var(--tw-color-secondary-600);
}

.dark .markdown-content blockquote {
  border-left-color: var(--tw-color-secondary-600);
  color: var(--tw-color-secondary-400);
}

.markdown-content pre {
  margin-top: 1rem;
  margin-bottom: 1rem;
  padding: 1rem;
  border-radius: 0.375rem;
  overflow-x: auto;
  background-color: var(--tw-color-secondary-100);
}

/* Chat message specific overrides for better overflow handling */
.chat-message .markdown-content {
  min-width: 0; /* Allow content to shrink below intrinsic width */
  word-wrap: break-word;
  overflow-wrap: break-word;
  max-width: 100%;
}

.chat-message .markdown-content pre {
  max-width: 100%;
  overflow-x: auto;
  white-space: pre;
  width: 100%;
  box-sizing: border-box;
}

/* Inline code elements - force word breaking */
.chat-message .markdown-content code:not(pre code) {
  max-width: 100%;
  overflow-wrap: break-word;
  word-break: break-all;
  white-space: pre-wrap;
  display: inline-block;
  vertical-align: top;
}

.chat-message .markdown-content table {
  max-width: 100%;
  overflow-x: auto;
  display: block;
  white-space: nowrap;
}

/* Ensure the chat message bubble itself constrains content properly */
.chat-message > span {
  min-width: 0;
  max-width: 80%;
  word-wrap: break-word;
  overflow-wrap: break-word;
  box-sizing: border-box;
}

/* Ensure content within the bubble respects container width */
.chat-message .markdown-content > * {
  max-width: 100%;
  box-sizing: border-box;
}

/* Prevent horizontal overflow in chat layout */
.chat-messages-area {
  overflow-x: hidden;
  min-width: 0;
}

/* Ensure the main chat area container prevents overflow */
.flex.h-screen {
  overflow-x: hidden;
}

/* Specific rule for chat page layout */
.flex.h-screen.bg-secondary-50 {
  overflow-x: hidden;
}

/* Ensure chat messages container prevents overflow */
#chat-messages-inner {
  overflow-x: hidden;
  min-width: 0;
}

/* Force long words and URLs to break in chat messages */
.chat-message .markdown-content p,
.chat-message .markdown-content div,
.chat-message .markdown-content span {
  word-break: break-word;
  overflow-wrap: break-word;
  hyphens: auto;
}

/* Ensure pre blocks scroll horizontally instead of overflowing */
.chat-message .markdown-content pre {
  overflow-x: auto;
  overflow-y: hidden;
  max-width: 100%;
  width: 100%;
  white-space: pre;
  word-wrap: normal;
  overflow-wrap: normal;
  box-sizing: border-box;
}

/* Specific rules for chat content actual container */
.chat-content-actual {
  max-width: 100%;
  overflow-x: hidden;
  word-wrap: break-word;
  overflow-wrap: break-word;
}

.chat-content-actual pre {
  max-width: 100%;
  width: 100%;
  overflow-x: auto;
  box-sizing: border-box;
}

.chat-content-actual .markdown-content pre {
  max-width: 100%;
  width: 100%;
  overflow-x: auto;
  box-sizing: border-box;
}

/* Force inline code to wrap and break long lines - override Prism.js */
.chat-message code:not(pre code),
.chat-message .markdown-content code:not(pre code),
.chat-content-actual code:not(pre code),
.chat-message code[class*='language-']:not(pre code),
.chat-message .markdown-content code[class*='language-']:not(pre code),
.chat-content-actual code[class*='language-']:not(pre code),
code[class*='language-']:not(pre code),
.chat-message code,
.chat-content-actual code,
.markdown-content code {
  white-space: pre-wrap !important;
  word-break: break-all !important;
  word-wrap: break-word !important;
  overflow-wrap: break-word !important;
  max-width: 100% !important;
  display: inline-block !important;
  box-sizing: border-box !important;
  overflow-x: hidden !important;
  background: rgba(0, 0, 0, 0.05) !important;
  padding: 2px 4px !important;
  border-radius: 3px !important;
}

/* Ensure chat message containers allow but constrain scrolling */
.chat-message {
  overflow-x: hidden !important;
  max-width: 100% !important;
  width: 100% !important;
  padding-right: 1rem !important; /* Add right padding to prevent hitting edge */
}

.chat-message > span {
  overflow-x: hidden !important;
  max-width: calc(80% - 1rem) !important; /* Account for padding */
  box-sizing: border-box !important;
}

/* Ensure the main chat container doesn't expand */
.chat-messages-area {
  overflow-x: hidden !important;
  max-width: 100% !important;
  width: 100% !important;
  padding-right: 1rem !important; /* Add right padding */
}

#chat-messages-inner {
  overflow-x: hidden !important;
  max-width: 100% !important;
  width: 100% !important;
  padding-right: 1rem !important; /* Add right padding */
}

/* Tool execution cards should also respect width constraints */
.tool-executions {
  max-width: 100%;
  overflow-x: hidden;
}

.tool-executions pre {
  overflow-x: auto;
  max-width: 100%;
}
/* Utility classes for line clamping - REMOVED
 * Using Tailwind's built-in line-clamp utilities instead:
 * .line-clamp-1, .line-clamp-2, .line-clamp-3, etc.
 */

/* Favorite star styles */
.star-filled {
  fill: currentColor;
}

.star-outline {
  fill: none;
  stroke: currentColor;
}

.tool-executions pre {
  overflow-x: auto;
  max-width: 100%;
}

.dark .markdown-content pre {
  background-color: var(--tw-color-secondary-900);
}

.markdown-content code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.875rem;
  padding: 0.125rem 0.25rem;
  border-radius: 0.25rem;
  /* background-color: var(--tw-color-secondary-100); */
  color: var(--tw-color-secondary-800);
  box-shadow: none;
}

.dark .markdown-content code {
  /* background-color: var(--tw-color-secondary-800); */
  color: var(--tw-color-secondary-200);
  box-shadow: none;
}

.markdown-content pre code {
  padding: 0;
  background-color: transparent;
}

/* Prism.js overrides for dark mode */
.dark .highlight,
.dark .markdown-content .highlight {
  background-color: var(--tw-color-secondary-900) !important;
}

/* Add a hook to refresh Prism highlighting after HTMX swaps */
.htmx-settling .markdown-content pre code {
  visibility: hidden;
}

.inverted-emoji {
  filter: brightness(0) invert(0);
}
.dark .inverted-emoji {
  filter: brightness(0) invert(1);
}

/* Sidebar Component */
.sidebar {
  scrollbar-width: thin;
  scrollbar-color: var(--tw-color-secondary-700) var(--tw-color-secondary-800);
}

.sidebar::-webkit-scrollbar {
  width: 6px;
}

.sidebar::-webkit-scrollbar-track {
  background: var(--tw-color-secondary-800);
}

.sidebar::-webkit-scrollbar-thumb {
  background: var(--tw-color-secondary-700);
  border-radius: 3px;
}

/* Mobile responsive adjustments */
@media (max-width: 1023px) {
  .sidebar {
    box-shadow:
      0 10px 15px -3px rgba(0, 0, 0, 0.1),
      0 4px 6px -2px rgba(0, 0, 0, 0.05);
  }
}

/* Layout Containers - Consistent spacing for sidebar layout */
.content-container-readable {
  max-width: 85ch; /* Optimal reading width */
  margin: 0 auto;
  padding: 2rem 1rem;
}

@media (min-width: 640px) {
  .content-container-readable {
    padding: 2rem 1.5rem;
  }
}

@media (min-width: 1024px) {
  .content-container-readable {
    padding: 2rem;
  }
}

.content-container-wide {
  max-width: 1280px; /* For tables and data-heavy content */
  margin: 0 auto;
  padding: 2rem 1rem;
}

@media (min-width: 640px) {
  .content-container-wide {
    padding: 2rem 1.5rem;
  }
}

@media (min-width: 1024px) {
  .content-container-wide {
    padding: 2rem;
  }
}

.content-container-full {
  max-width: 1536px; /* For dashboard-style layouts */
  margin: 0 auto;
  padding: 2rem 1rem;
}

@media (min-width: 640px) {
  .content-container-full {
    padding: 2rem 1.5rem;
  }
}

@media (min-width: 1024px) {
  .content-container-full {
    padding: 2rem;
  }
}

/* Table Styling */
.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem; /* 14px */
  line-height: 1.25rem; /* 20px */
}

.table th,
.table td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--color-border-default);
}

.table th {
  background-color: var(--color-bg-surface-alt);
  font-weight: 600;
  color: var(--color-text-secondary);
  font-size: 0.75rem; /* 12px */
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.table tbody tr:hover {
  background-color: var(--color-bg-surface-alt);
}

.table tbody tr:nth-child(even) {
  background-color: var(--color-bg-surface);
}

.table tbody tr:nth-child(even):hover {
  background-color: var(--color-bg-surface-alt);
}

.dark .table th {
  background-color: var(--color-bg-surface);
  color: var(--color-text-secondary);
}

.dark .table tbody tr:nth-child(even) {
  background-color: var(--color-bg-surface-alt);
}

.dark .table tbody tr:hover {
  background-color: var(--color-bg-surface);
}

/* Ensure proper spacing from sidebar */
.content-with-sidebar {
  min-height: 100vh;
  margin-left: 0;
  transition: margin-left 300ms ease-in-out;
}

@media (min-width: 1024px) {
  .content-with-sidebar {
    margin-left: 11rem; /* 176px - expanded sidebar (w-44) */
  }

  .content-with-sidebar.sidebar-collapsed {
    margin-left: 4rem; /* 64px - collapsed sidebar (w-16) */
  }
}

/* Add other component styles below */

/* Chat Layout - Full Viewport */
.chat-layout {
  display: flex;
  flex-direction: column;
  height: calc(100vh - 4rem); /* Account for mobile header */
  max-height: calc(100vh - 4rem);
}

@media (min-width: 1024px) {
  .chat-layout {
    height: 100vh; /* Full height on desktop since no mobile header */
    max-height: 100vh;
  }
}

.chat-header {
  flex-shrink: 0;
  padding: 1rem 0;
}

.chat-messages-area {
  flex: 1;
  overflow-y: auto;
  min-height: 0;
  /* margin-bottom: 1rem; */
}

.chat-input-area {
  flex-shrink: 0;
  position: sticky;
  bottom: 0;
  padding-top: 1rem;
}

/* Field Sizing for Dynamic Input */
.chat-input {
  field-sizing: content;
  min-width: 200px;
  max-width: 100%;
  resize: none;
  overflow-y: hidden;
  transition: height 0.1s ease;
}

@media (min-width: 1024px) {
  .chat-input {
    min-width: 300px;
  }
}

/* Remove any text effects that could cause doubling/shadow appearance */
.markdown-content code,
.markdown-content pre,
.markdown-content pre code,
.prose code,
.prose pre,
.prose pre code,
code[class*='language-'],
pre[class*='language-'] {
  text-shadow: none !important;
  filter: none !important;
  transform: none !important;
  -webkit-transform: none !important;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  position: static !important;
}

/* Enhanced Agent Card System */

/* General Card Component */
.card {
  background-color: var(--color-bg-surface-alt);
  border: 1px solid var(--color-border-default);
  border-radius: var(--space-2); /* Default 0.5rem, using space token */
  margin-bottom: var(--space-6); /* Default 1.5rem */
  overflow: hidden;
  box-shadow: var(--elev-1-shadow);
  transition:
    transform var(--duration-quick) var(--ease-standard),
    box-shadow var(--duration-quick) var(--ease-standard);
}

/* Tool Execution Cards - extends .card */
.tool-card {
  /* Inherit from .card base styles */
  background-color: var(--color-bg-surface-alt);
  border: 1px solid var(--color-border-default);
  border-radius: var(--space-2);
  margin-bottom: var(--space-2); /* Smaller margin for tools */
  overflow: hidden;
  box-shadow: var(--elev-1-shadow);
  transition:
    transform var(--duration-quick) var(--ease-standard),
    box-shadow var(--duration-quick) var(--ease-standard);
}

.card:hover {
  transform: translateY(-2px); /* Consider a token if needed */
  box-shadow: var(--elev-2-shadow); /* Enhanced shadow on hover */
}

.tool-card:hover {
  transform: translateY(-1px); /* Subtle hover effect */
  box-shadow: var(--elev-2-shadow);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-6); /* Default 1rem 1.5rem */
  background-color: var(--color-bg-surface); /* Slightly different from card body */
  border-bottom: 1px solid var(--color-border-default);
}

.tool-header {
  /* Tool-specific header styles - consider using .card-header instead */
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-2); /* 0.5rem, more compact than default card-header */
  background-color: var(--color-bg-surface);
  border-bottom: 1px solid var(--color-border-default);
  cursor: pointer;
  transition: background-color var(--duration-quick) var(--ease-standard);
}

.card-header .card-title {
  font-weight: 600; /* Consider token */
  color: var(--color-text-primary);
  font-size: 1.125rem; /* text-lg, consider token */
}

.tool-header:hover {
  background-color: var(--color-bg-surface-hover);
}

.card-body {
  padding: var(--space-6); /* Default 1.5rem */
}

.card-footer {
  padding: var(--space-4) var(--space-6); /* Default 1rem 1.5rem */
  background-color: var(--color-bg-surface);
  border-top: 1px solid var(--color-border-default);
  font-size: 0.875rem; /* text-sm, consider token */
  color: var(--color-text-secondary);
}

/* Optional top accent for cards */
.card-accent-top {
  position: relative;
  /* The border-radius of the ::before pseudo-element should match the card's border-radius */
}

.card-accent-top::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: var(--space-1); /* 4px accent line */
  background: var(--color-bg-primary); /* Default to primary accent */
  border-radius: var(--space-2) var(--space-2) 0 0; /* Match card's top border radius */
}

/* Modifier for different accent colors if needed */
.card-accent-top.accent-secondary::before {
  background: var(--color-bg-secondary);
}
.card-accent-top.accent-success::before {
  background: var(--tw-color-success-500); /* Using tw-color directly for specific shades if semantic not enough */
}
.card-accent-top.accent-error::before {
  background: var(--tw-color-error-500);
}
.card-accent-top.accent-warning::before {
  background: var(--tw-color-warning-500);
}
.card-accent-top.accent-info::before {
  background: var(--tw-color-info-500);
}

/* Tool Execution Cards (Specific instance of .card) */
/* We can keep .tool-card if it has very specific overrides, or integrate its unique parts into .card structure / modifiers */
.tool-card {
  /* Most styles from .tool-card are now covered by .card, .card-header, .card-body */
  /* Specific overrides for tool-card can remain if necessary */
}

/* Tool Cards using .card-header - more compact variant */
.tool-card .card-header {
  padding: var(--space-2) var(--space-3); /* More compact than default card-header */
  cursor: pointer; /* Tool headers are interactive */
}

.tool-card .card-header:hover {
  background-color: var(--color-bg-surface-hover);
}

.tool-info {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex: 1;
  min-width: 0;
}

.tool-icon {
  width: var(--icon-size-sm);
  height: var(--icon-size-sm);
  color: var(--color-text-secondary);
  flex-shrink: 0;
}

.tool-name {
  font-weight: 600;
  color: var(--color-text-primary);
  font-size: 0.875rem;
}

.tool-status {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.125rem 0.5rem;
  border-radius: 9999px;
  font-size: 0.6875rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.tool-status.success {
  background-color: var(--color-bg-success-light);
  color: var(--color-text-success);
}

.tool-status.error {
  background-color: var(--color-bg-error-light);
  color: var(--color-text-error);
}

.tool-status.running {
  background-color: var(--color-bg-info-light);
  color: var(--color-text-info);
}

.tool-status.pending {
  background-color: var(--color-bg-warning-light);
  color: var(--color-text-warning);
}

.tool-meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

.execution-time {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
  font-family: ui-monospace, SFMono-Regular, 'SF Mono', Consolas, 'Liberation Mono', Menlo, monospace;
  background-color: var(--color-bg-surface-hover);
  padding: 0.125rem 0.375rem;
  border-radius: var(--space-1);
}

.expand-icon {
  width: 0.875rem;
  height: 0.875rem;
  color: var(--color-text-secondary);
  transition: transform var(--duration-moderate) var(--ease-standard);
}

/* .tool-details is now .card-body for Tool Cards */
.tool-card .card-body {
  padding: var(--space-4); /* More compact than default card-body */
  background-color: var(--color-bg-surface); /* Subtle background for tool details */
}

.tool-details {
  padding: 0.875rem;
  background-color: rgba(249, 250, 251, 0.5);
}

.tool-section {
  margin-bottom: 0.875rem;
}
.tool-section:last-child {
  margin-bottom: 0;
}

.section-header {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--tw-color-secondary-700);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}

.section-content {
  margin-top: 0.375rem;
}

.tool-card .code-block {
  background-color: var(--tw-color-secondary-900);
  color: var(--tw-color-secondary-100);
  border: 1px solid var(--tw-color-secondary-700);
  border-radius: 0.375rem;
  padding: 0.625rem;
  font-family: ui-monospace, SFMono-Regular, 'SF Mono', Consolas, 'Liberation Mono', Menlo, monospace;
  font-size: 0.75rem;
  overflow: visible !important;
  overflow-x: visible !important;
  overflow-y: visible !important;
  overflow-wrap: break-word !important;
  word-wrap: break-word !important;
  word-break: break-word !important;
  white-space: pre-wrap !important;
  max-width: 100% !important;
  width: 100% !important;
  line-height: 1.5;
}

.output-text {
  background-color: var(--tw-color-secondary-50);
  border: 1px solid var(--tw-color-secondary-200);
  border-left: 4px solid var(--tw-color-success-500);
  padding: 0.625rem;
  border-radius: 0 0.375rem 0.375rem 0;
  font-size: 0.75rem;
  overflow-x: auto;
  overflow-y: auto;
  max-height: 15rem;
  white-space: pre-wrap;
  word-break: break-word;
  max-width: 100%;
  line-height: 1.5;
  color: var(--tw-color-secondary-800);
}

.error-text {
  background-color: var(--tw-color-error-50);
  border: 1px solid var(--tw-color-error-200);
  border-left: 4px solid var(--tw-color-error-500);
  padding: 0.625rem;
  border-radius: 0 0.375rem 0.375rem 0;
  font-size: 0.75rem;
  color: var(--tw-color-error-800);
  line-height: 1.5;
}

.metadata-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.5rem;
}

@media (min-width: 640px) {
  .metadata-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.metadata-item {
  display: flex;
  gap: 0.5rem;
  font-size: 0.75rem;
  background-color: var(--tw-color-secondary-50);
  padding: 0.5rem;
  border-radius: 0.25rem;
}

.metadata-label {
  font-weight: 500;
  color: var(--tw-color-secondary-600);
  min-width: 5rem;
  flex-shrink: 0;
}

.metadata-value {
  color: var(--tw-color-secondary-900);
  font-family: ui-monospace, SFMono-Regular, 'SF Mono', Consolas, 'Liberation Mono', Menlo, monospace;
  word-break: break-all;
}

/* Dark mode styles for .card and its sub-elements */
.dark .card {
  background-color: var(--tw-color-secondary-800);
  border-color: var(--tw-color-secondary-700);
}

.dark .card-header {
  background-color: rgba(17, 24, 39, 0.5); /* Darker header for contrast */
  border-bottom-color: var(--tw-color-secondary-700);
}
.dark .card-header .card-title {
  color: var(--tw-color-secondary-100);
}

.dark .card-footer {
  background-color: rgba(17, 24, 39, 0.5); /* Darker footer */
  border-top-color: var(--tw-color-secondary-700);
  color: var(--tw-color-secondary-400);
}

/* Specific dark mode for tool-card elements if they differ from general card */
.dark .tool-card .card-header:hover {
  background-color: var(--color-bg-surface-hover);
}

.dark .tool-icon {
  color: var(--color-text-secondary);
}

.dark .tool-name {
  color: var(--color-text-primary);
}

.dark .tool-status.success {
  background-color: var(--color-bg-success-light);
  color: var(--color-text-success);
}

.dark .tool-status.error {
  background-color: var(--color-bg-error-light);
  color: var(--color-text-error);
}

.dark .tool-status.running {
  background-color: var(--color-bg-info-light);
  color: var(--color-text-info);
}

.dark .tool-status.pending {
  background-color: var(--color-bg-warning-light);
  color: var(--color-text-warning);
}

.dark .execution-time {
  color: var(--color-text-secondary);
  background-color: var(--color-bg-surface-hover);
}

.dark .expand-icon {
  color: var(--color-text-secondary);
}

.dark .tool-card .card-body {
  /* Specific dark background for tool card body */
  background-color: rgba(17, 24, 39, 0.3); /* Slightly different from default card body if needed */
}

.dark .section-header {
  /* For .tool-section within .card-body */
  color: var(--tw-color-secondary-300);
}

.dark .tool-card .code-block {
  background-color: #000000; /* Pitch black for code blocks */
  color: var(--tw-color-secondary-200);
  border-color: var(--tw-color-secondary-600);
}

.dark .output-text {
  background-color: var(--tw-color-secondary-800); /* Match card background */
  border-color: var(--tw-color-secondary-700);
  color: var(--tw-color-secondary-200);
}

.dark .error-text {
  background-color: rgba(127, 29, 29, 0.2); /* Error themed background */
  border-color: var(--tw-color-error-800);
  color: var(--tw-color-error-300);
}

.dark .metadata-item {
  background-color: var(--tw-color-secondary-800); /* Match card background or slightly off for contrast */
}

.dark .metadata-label {
  color: var(--tw-color-secondary-400);
}

.dark .metadata-value {
  color: var(--tw-color-secondary-100);
}

/* Responsive improvements for generic cards and tool cards */
@media (max-width: 640px) {
  .card-header {
    padding: 0.75rem 1rem; /* Adjust padding for smaller screens */
  }
  .card-body {
    padding: 1rem;
  }
  .card-footer {
    padding: 0.75rem 1rem;
  }

  /* Specific responsive for tool-card if needed */
  .tool-card .card-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
    padding: 0.5rem;
  }

  .tool-info {
    /* Ensure it takes full width if header stacks */
    width: 100%;
  }

  .tool-meta {
    /* Ensure it takes full width if header stacks */
    width: 100%;
    justify-content: space-between;
  }

  .tool-card .card-body {
    padding: 1rem;
  }

  .tool-details {
    padding: 0.625rem;
  }

  .tool-section {
    margin-bottom: 0.625rem;
  }

  .tool-card .code-block {
    font-size: 0.6875rem; /* Reduced from 0.75rem */
    padding: 0.5rem; /* Reduced from 0.75rem */
  }

  .output-text,
  .error-text {
    font-size: 0.6875rem;
    padding: 0.5rem;
  }

  .metadata-grid {
    grid-template-columns: 1fr; /* Stack metadata items */
  }
}

/* == Content previously from style.css == */
/* ... existing styles ... */

/* A2A Workflow Interface Styles */
.workflow-step {
  transition:
    opacity 0.3s ease-in-out,
    transform 0.3s ease-in-out;
}

.workflow-step:not(.active) {
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
}

.workflow-step.active {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

/* Workflow sidebar transitions */
#workflow-sidebar {
  transition:
    width 0.3s ease-in-out,
    transform 0.3s ease-in-out;
}

#workflow-sidebar.collapsed {
  width: 4rem !important;
}

#workflow-sidebar.collapsed .sidebar-text {
  opacity: 0;
  transform: translateX(-10px);
  transition:
    opacity 0.2s ease-in-out,
    transform 0.2s ease-in-out;
}

#workflow-sidebar:not(.collapsed) .sidebar-text {
  opacity: 1;
  transform: translateX(0);
  transition:
    opacity 0.3s ease-in-out 0.1s,
    transform 0.3s ease-in-out 0.1s;
}

/* Workflow step navigation */
.workflow-step-nav {
  position: relative;
  overflow: hidden;
}

.workflow-step-nav::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s ease-in-out;
}

.workflow-step-nav:hover::before {
  left: 100%;
}

.workflow-step-nav.active {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(147, 51, 234, 0.1));
  border-left: 3px solid rgb(59, 130, 246);
}

/* Enhanced connection graph */
.a2a-network-graph {
  background:
    radial-gradient(circle at 30% 70%, rgba(59, 130, 246, 0.05), transparent 50%),
    radial-gradient(circle at 70% 30%, rgba(147, 51, 234, 0.05), transparent 50%);
}

.a2a-node {
  transition:
    transform 0.2s ease-in-out,
    filter 0.2s ease-in-out;
}

.a2a-node:hover {
  transform: scale(1.1);
  filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.2));
}

.a2a-edge {
  transition:
    stroke-width 0.2s ease-in-out,
    opacity 0.2s ease-in-out;
}

.a2a-edge:hover {
  stroke-width: 3px;
  opacity: 0.8;
}

/* Workflow progress indicators */
.workflow-progress-bar {
  position: relative;
  overflow: hidden;
}

.workflow-progress-bar::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  animation: progress-shimmer 2s infinite;
}

@keyframes progress-shimmer {
  0% {
    left: -100%;
  }
  100% {
    left: 100%;
  }
}

/* Status indicators with animations */
.status-indicator {
  position: relative;
}

.status-indicator.running::after {
  content: '';
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  bottom: -2px;
  border: 2px solid currentColor;
  border-radius: inherit;
  opacity: 0.5;
  animation: status-pulse 2s infinite;
}

@keyframes status-pulse {
  0%,
  100% {
    transform: scale(1);
    opacity: 0.5;
  }
  50% {
    transform: scale(1.1);
    opacity: 0.2;
  }
}

/* Activity feed enhancements */
.activity-timeline {
  position: relative;
}

.activity-timeline::before {
  content: '';
  position: absolute;
  left: 16px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(
    to bottom,
    rgba(59, 130, 246, 0.5) 0%,
    rgba(59, 130, 246, 0.3) 50%,
    rgba(59, 130, 246, 0.1) 100%
  );
}

.activity-item {
  position: relative;
  transition:
    transform 0.2s ease-in-out,
    background-color 0.2s ease-in-out;
}

.activity-item:hover {
  transform: translateX(4px);
  background-color: rgba(59, 130, 246, 0.02);
  border-radius: 8px;
}

/* Workflow cards */
/* TODO: Replace with new .card component from components.css and Tailwind utilities */
/*
.workflow-card {
  position: relative;
  transition: transform 0.2s ease-in-out, box-shadow 0.2s ease-in-out;
}

.workflow-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.workflow-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, rgb(59, 130, 246), rgb(147, 51, 234));
  border-radius: 8px 8px 0 0;
  opacity: 0;
  transition: opacity 0.2s ease-in-out;
}

.workflow-card:hover::before {
  opacity: 1;
}
*/

/* Real-time update indicators */
.live-indicator {
  position: relative;
}

.live-indicator::after {
  content: '';
  position: absolute;
  top: 50%;
  right: -6px;
  transform: translateY(-50%);
  width: 4px;
  height: 4px;
  background: rgb(34, 197, 94);
  border-radius: 50%;
  animation: live-pulse 1.5s infinite;
}

@keyframes live-pulse {
  0%,
  100% {
    opacity: 1;
    transform: translateY(-50%) scale(1);
  }
  50% {
    opacity: 0.5;
    transform: translateY(-50%) scale(1.2);
  }
}

/* Quick action buttons */
/* TODO: Refactor. Base style can be Tailwind. Shimmer effect is custom. Consider if needed or simplify. */
/*
.quick-action {
  position: relative;
  overflow: hidden;
  transition: all 0.3s ease;
}

.quick-action::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.1),
    transparent
  );
  transition: left 0.5s ease;
}

.quick-action:hover::before {
  left: 100%;
}

.quick-action:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.2);
}
*/

/* Dark mode adjustments */
.dark .workflow-step-nav.active {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.2), rgba(147, 51, 234, 0.2));
  border-left: 3px solid rgb(96, 165, 250);
}

.dark .a2a-network-graph {
  background:
    radial-gradient(circle at 30% 70%, rgba(59, 130, 246, 0.1), transparent 50%),
    radial-gradient(circle at 70% 30%, rgba(147, 51, 234, 0.1), transparent 50%);
}

.dark .activity-item:hover {
  background-color: rgba(59, 130, 246, 0.05);
}

.dark .workflow-card:hover {
  /* This hover effect might need to be replicated with Tailwind on the new .card */
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
}

.dark .quick-action:hover {
  /* This hover effect might need to be replicated with Tailwind or simplified */
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

/* Mobile responsiveness */
@media (max-width: 1024px) {
  #workflow-sidebar {
    position: absolute;
    z-index: 50;
    transform: translateX(-100%);
  }

  #workflow-sidebar:not(.collapsed) {
    transform: translateX(0);
  }

  .workflow-step {
    padding: 1rem;
  }
}

@media (max-width: 768px) {
  .workflow-card {
    margin-bottom: 1rem;
  }

  .quick-action {
    padding: 0.75rem;
    text-align: center;
  }

  .activity-item:hover {
    transform: none;
  }
}

/* Enhanced spacing for RFC-020 compliance */

.a2a-sidebar-section {
  margin-bottom: 1.5rem;
}

.a2a-sidebar-section:last-child {
  margin-bottom: 0;
}

/* Improved workflow step spacing */

/* Better header spacing */

/* Enhanced monitor section spacing */

.monitor-empty-state {
  padding: 3rem 2rem;
  text-align: center;
}

/* Activity feed spacing improvements */

/* Sidebar collapsed state improvements */
#workflow-sidebar.collapsed .workflow-step-nav {
  padding: 0.75rem; /* This might be specific, review later */
  justify-content: center;
}

#workflow-sidebar.collapsed .workflow-step-nav .workflow-step-number {
  margin-right: 0; /* This might be specific, review later */
}

/* Better button spacing */

/* Card content spacing */

/* A2A Hub layout improvements */
.a2a-hub-layout {
  display: flex;
  height: 100vh;
  background: rgb(249 250 251);
}

.dark .a2a-hub-layout {
  background: rgb(17 24 39);
}

/* Hide global nav when in A2A workflow mode */
.a2a-workflow-mode .global-sidebar {
  display: none;
}

.a2a-workflow-mode .main-content {
  margin-left: 0;
}

/* Better activity feed spacing */
.activity-item-enhanced {
  padding: 1.25rem 0;
  border-bottom: 1px solid rgba(156, 163, 175, 0.1);
}

.activity-item-enhanced:last-child {
  border-bottom: none;
}

/* Network overview improvements */
.agent-card-enhanced {
  transition:
    transform 0.2s ease-in-out,
    box-shadow 0.2s ease-in-out;
  border-radius: 0.75rem;
  padding: 1.25rem;
}

.agent-card-enhanced:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.dark .agent-card-enhanced:hover {
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
}

/* Better empty states */
.empty-state-enhanced {
  padding: 3rem 2rem;
  text-align: center;
}

.empty-state-enhanced .icon-wrapper {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 4rem;
  height: 4rem;
  border-radius: 50%;
  margin-bottom: 1.5rem;
}

.empty-state-enhanced h3 {
  font-size: 1.125rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.empty-state-enhanced p {
  margin-bottom: 1.5rem;
}

/* Workflow step transitions */
.workflow-step-transition {
  transition:
    opacity 0.3s ease-in-out,
    transform 0.3s ease-in-out;
}

.workflow-step-hidden {
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
}

.workflow-step-visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

/* === ChatManager Enhancements === */

/* Screen reader only class for accessibility */
.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;
}

/* Chat message state management via data attributes */
.chat-message[data-state='thinking'] {
  opacity: 0.8;
}

.chat-message[data-state='streaming'] {
  border-left: 3px solid var(--tw-color-primary-500);
  animation: streaming-pulse 1.5s ease-in-out infinite;
}

.chat-message[data-state='complete'] {
  opacity: 1;
  border-left: none;
}

.chat-message[data-thinking='true'] {
  background-color: var(--tw-color-secondary-50);
}

.dark .chat-message[data-thinking='true'] {
  background-color: var(--tw-color-secondary-800);
}

@keyframes streaming-pulse {
  0%,
  100% {
    border-left-color: var(--tw-color-primary-500);
  }
  50% {
    border-left-color: var(--tw-color-primary-300);
  }
}

/* Scroll sentinel styling */
#scroll-sentinel {
  pointer-events: none;
  z-index: -1;
}

/* Ensure chat container has relative positioning for sentinel */
#chat-messages {
  position: relative;
}

/* Enhanced new message indicator */
#new-messages-indicator {
  backdrop-filter: blur(8px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

#new-messages-indicator:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

/* Typing effect for chunks */
.typing-effect {
  animation: typewriter 0.1s ease-out;
}

@keyframes typewriter {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

/* Performance optimization - reduce paint complexity */
.chat-message {
  contain: layout style;
}

.chat-messages-area {
  contain: layout;
}

/* Enhanced accessibility for chat area */
.chat-messages-area[role='log'] {
  scroll-behavior: smooth;
}

/* Improved loading states */
.chat-message[aria-busy='true'] .chat-content-actual {
  position: relative;
}

.chat-message[aria-busy='true'] .chat-content-actual::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(90deg, transparent 0%, rgba(255, 255, 255, 0.4) 50%, transparent 100%);
  animation: loading-shimmer 1.5s infinite;
}

.dark .chat-message[aria-busy='true'] .chat-content-actual::after {
  background: linear-gradient(90deg, transparent 0%, rgba(255, 255, 255, 0.1) 50%, transparent 100%);
}

@keyframes loading-shimmer {
  0% {
    transform: translateX(-100%);
  }
  100% {
    transform: translateX(100%);
  }
}

/* === CHAT PERFORMANCE === */
/* Ensure instant scrolling on initial load and forced scrolls */
#chat-messages {
  scroll-behavior: smooth;
}

#chat-messages[data-instant-scroll] {
  scroll-behavior: auto !important;
}

/* === OPTIMISTIC UI STATES === */
/* Hide the built-in HTMX indicator since we have our own optimistic UI */
#chat-form-indicator.htmx-indicator {
  display: none !important;
}

/* Optimistic message styling to match real user messages */
.optimistic-message[data-state='pending'] {
  opacity: 0.85;
  transition: opacity 0.2s ease;
}

.optimistic-message[data-state='pending'] .message-content {
  position: relative;
  box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.1);
  transform: translateY(0);
}

/* Pending message with blinking cursor */
[data-state='pending'] .message-content::after {
  content: '▁';
  animation: blink 1s infinite;
  margin-left: 2px;
  color: rgba(255, 255, 255, 0.7);
}

/* Dark mode cursor color for non-optimistic messages */
.dark [data-state='pending']:not(.optimistic-message) .message-content::after {
  color: var(--tw-color-secondary-400);
}

/* Error state styling */
[data-state='error'] {
  opacity: 0.6;
  transition: opacity 0.2s ease;
}

[data-state='error']:hover {
  opacity: 0.8;
}

/* Pending state subtle opacity */
[data-state='pending']:not(.optimistic-message) {
  opacity: 0.7;
  transition: opacity 0.2s ease;
}

/* Blinking animation for the cursor */
@keyframes blink {
  0%,
  50% {
    opacity: 1;
  }
  51%,
  100% {
    opacity: 0;
  }
}