:root {
  --fuci-bg: #fafafa;
  --fuci-fg: #0a0a0a;
  --fuci-border: #e8e8e8;
  --fuci-muted-bg: #f5f5f5;
  --fuci-muted-text: #737373;
  --fuci-primary: #0a0a0a;
  --fuci-primary-hover: #262626;
  --fuci-primary-bg: #f0f0f0;
  --fuci-shadow: rgba(0, 0, 0, 0.04);
  --fuci-shadow-hover: rgba(0, 0, 0, 0.08);
  --fuci-card-border: #e8e8e8;
}

@media (prefers-color-scheme: dark) {
  :root {
    --fuci-bg: #0a0a0a;
    --fuci-fg: #fafafa;
    --fuci-border: #262626;
    --fuci-muted-bg: #141414;
    --fuci-muted-text: #a3a3a3;
    --fuci-primary: #fafafa;
    --fuci-primary-hover: #e5e5e5;
    --fuci-primary-bg: #262626;
    --fuci-shadow: rgba(0, 0, 0, 0.4);
    --fuci-shadow-hover: rgba(0, 0, 0, 0.6);
    --fuci-card-border: #262626;
  }
}

/* Respect prefers-reduced-motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@400;500;600;700&family=Geist+Mono:wght@400;500&display=swap');

html {
  scroll-behavior: smooth;
}

body {
  background: var(--fuci-bg);
  color: var(--fuci-fg);
  font-family: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  transition: background-color 0.2s, color 0.2s;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Skip to content link for keyboard navigation */
.skip-link {
  position: absolute;
  top: -100%;
  left: 0;
  background: var(--fuci-primary);
  color: white;
  padding: 0.5rem 1rem;
  text-decoration: none;
  z-index: 9999;
  border-radius: 0 0 0.25rem 0;
}

.skip-link:focus {
  top: 0;
}

/* Improved focus indicators */
:focus-visible {
  outline: 2px solid var(--fuci-primary);
  outline-offset: 2px;
}

.btn:focus-visible {
  outline: 2px solid var(--fuci-primary);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px var(--fuci-shadow);
}

.form-control:focus-visible {
  outline: 2px solid var(--fuci-primary);
  outline-offset: -2px;
}

/* Visually hidden for screen readers */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Bootstrap dark mode overrides */
@media (prefers-color-scheme: dark) {
  body {
    background-color: var(--fuci-bg);
    color: var(--fuci-fg);
  }

  .card {
    background-color: var(--fuci-muted-bg);
    border-color: var(--fuci-border);
    color: var(--fuci-fg);
  }

  .form-control, .form-select {
    background-color: var(--fuci-bg);
    border-color: var(--fuci-border);
    color: var(--fuci-fg);
  }

  .form-control:focus, .form-select:focus {
    background-color: var(--fuci-bg);
    border-color: var(--fuci-primary);
    color: var(--fuci-fg);
    box-shadow: 0 0 0 0.25rem rgba(59, 130, 246, 0.25);
  }

  .form-control::placeholder {
    color: var(--fuci-muted-text);
  }

  .navbar {
    background-color: var(--fuci-muted-bg) !important;
    border-bottom: 1px solid var(--fuci-border);
  }

  .navbar-brand, .nav-link {
    color: var(--fuci-fg) !important;
  }

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

  /* Modal dark mode */
  .modal-content {
    background-color: var(--fuci-muted-bg);
    border-color: var(--fuci-border);
    color: var(--fuci-fg);
  }

  .modal-header {
    border-bottom-color: var(--fuci-border);
  }

  .modal-footer {
    border-top-color: var(--fuci-border);
  }

  .modal-title {
    color: var(--fuci-fg);
  }

  .btn-close {
    filter: invert(1) grayscale(100%) brightness(200%);
  }

  .btn-outline-primary {
    color: var(--fuci-primary);
    border-color: var(--fuci-primary);
  }

  .btn-outline-primary:hover {
    background-color: var(--fuci-primary);
    border-color: var(--fuci-primary);
    color: var(--fuci-bg);
  }

  .btn-outline-primary:active {
    background-color: var(--fuci-primary);
    border-color: var(--fuci-primary);
    color: var(--fuci-bg);
  }

  .btn-outline-secondary {
    color: var(--fuci-muted-text);
    border-color: var(--fuci-border);
  }

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

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

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

  .table {
    color: var(--fuci-fg);
    border-color: var(--fuci-border);
  }

  .table-striped > tbody > tr:nth-of-type(odd) > * {
    color: var(--fuci-fg);
    background-color: rgba(255, 255, 255, 0.05);
  }

  /* Alerts dark mode */
  .alert {
    background-color: var(--fuci-muted-bg);
    border-color: var(--fuci-border);
    color: var(--fuci-fg);
  }

  .alert-info {
    background-color: rgba(59, 130, 246, 0.15);
    border-color: var(--fuci-primary);
    color: #93c5fd;
  }

  .alert-warning {
    background-color: rgba(251, 191, 36, 0.15);
    border-color: #f59e0b;
    color: #fcd34d;
  }

  .alert-danger {
    background-color: rgba(239, 68, 68, 0.15);
    border-color: #ef4444;
    color: #fca5a5;
  }

  .alert-success {
    background-color: rgba(34, 197, 94, 0.15);
    border-color: #22c55e;
    color: #86efac;
  }

  /* Badge dark mode */
  .badge {
    color: #fff;
  }

  .badge-secondary {
    background-color: var(--fuci-muted-text);
  }

  /* Input group dark mode */
  .input-group-text {
    background-color: var(--fuci-muted-bg);
    border-color: var(--fuci-border);
    color: var(--fuci-fg);
  }

  /* Form check dark mode */
  .form-check-input {
    background-color: var(--fuci-bg);
    border-color: var(--fuci-border);
  }

  .form-check-input:checked {
    background-color: var(--fuci-primary);
    border-color: var(--fuci-primary);
  }

  /* Shadow adjustments for dark mode */
  .shadow-sm {
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.3) !important;
  }

  .card:hover {
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.3) !important;
  }

  /* Link colors */
  a {
    color: var(--fuci-primary);
  }

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

  /* Code and pre */
  code, pre {
    color: var(--fuci-fg);
  }

  /* Small text */
  small, .small {
    color: var(--fuci-muted-text);
  }

  /* Copy button dark mode */
  .btn-light {
    background-color: var(--fuci-muted-bg);
    border-color: var(--fuci-border);
    color: var(--fuci-fg);
  }

  .btn-light:hover {
    background-color: var(--fuci-border);
    border-color: var(--fuci-border);
    color: var(--fuci-fg);
  }
}

/* FUCI custom styles */
.fuci-header {
  background: var(--fuci-muted-bg);
  border-bottom: 1px solid var(--fuci-border);
  padding: 1.5rem 0;
}

/* Navbar brand styling */
.navbar {
  background: var(--fuci-bg) !important;
  border-bottom: 1px solid var(--fuci-border);
}

.navbar-brand {
  font-weight: 600;
  font-size: 1.125rem;
  color: var(--fuci-fg) !important;
  display: flex;
  align-items: center;
  letter-spacing: -0.02em;
}

.navbar-brand:hover {
  color: var(--fuci-fg) !important;
  opacity: 0.7;
}

/* Navbar toggler for dark mode */
@media (prefers-color-scheme: dark) {
  .navbar-toggler {
    border-color: var(--fuci-border);
  }

  .navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(243, 244, 246, 0.75)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
  }
}

.fuci-header h1 {
  font-size: 1.875rem;
  font-weight: 600;
  margin: 0;
  letter-spacing: -0.03em;
}

.fuci-header p {
  color: var(--fuci-muted-text);
  font-size: 1rem;
  margin: 0;
  font-weight: 400;
}

.fuci-main {
  max-width: 1400px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem;
}

.fuci-footer {
  text-align: center;
  padding: 2rem 1.5rem;
  color: var(--fuci-muted-text);
  border-top: 1px solid var(--fuci-border);
  font-size: 0.8125rem;
  margin-top: 4rem;
}

.fuci-card {
  background: var(--fuci-bg);
  border: 1px solid var(--fuci-card-border);
  border-radius: 0.75rem;
  padding: 1.25rem;
  transition: border-color 0.2s, box-shadow 0.2s, transform 0.15s;
  display: flex;
  flex-direction: column;
}

.fuci-card:hover {
  border-color: var(--fuci-border);
  box-shadow: 0 8px 24px var(--fuci-shadow-hover);
}

.fuci-card:active {
  transform: scale(0.995);
}

.fuci-empty-state {
  text-align: center;
  padding: 4rem 2rem;
  color: var(--fuci-muted-text);
}

.fuci-empty-state i {
  opacity: 0.2;
  margin-bottom: 1.5rem;
}

.fuci-empty-state h4 {
  font-weight: 500;
  margin-bottom: 0.75rem;
  letter-spacing: -0.01em;
}

.fuci-empty-state p {
  margin-bottom: 1.5rem;
  font-size: 0.9375rem;
}

.text-muted-custom {
  color: var(--fuci-muted-text) !important;
}

.alert-error {
  background: #fee2e2;
  color: #991b1b;
  border: 1px solid #fecaca;
  padding: 1rem;
  border-radius: 0.5rem;
  margin-bottom: 1rem;
}

@media (prefers-color-scheme: dark) {
  .alert-error {
    background: #7f1d1d;
    color: #fecaca;
    border-color: #991b1b;
  }
}

.alert-success-custom {
  background: #dcfce7;
  color: #166534;
  border: 1px solid #bbf7d0;
  padding: 1rem;
  border-radius: 0.5rem;
  margin-bottom: 1rem;
}

@media (prefers-color-scheme: dark) {
  .alert-success-custom {
    background: #166534;
    color: #bbf7d0;
    border-color: #166534;
  }
}

/* Override Bootstrap primary */
.btn-primary {
  background-color: var(--fuci-primary);
  border-color: var(--fuci-primary);
  color: var(--fuci-bg);
  transition: background-color 0.2s, border-color 0.2s, transform 0.1s;
}

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

.btn-primary:active {
  transform: scale(0.98);
}

/* Mobile hit targets */
@media (max-width: 767px) {
  .btn-sm {
    min-height: 44px;
    padding: 0.5rem 1rem;
  }
}

.btn-outline-primary {
  color: var(--fuci-primary);
  border-color: var(--fuci-primary);
}

.btn-outline-primary:hover {
  background-color: var(--fuci-primary);
  border-color: var(--fuci-primary);
  color: var(--fuci-bg);
}

.btn-outline-primary:active {
  background-color: var(--fuci-primary);
  border-color: var(--fuci-primary);
  color: var(--fuci-bg);
}

.link-primary {
  color: var(--fuci-primary) !important;
}

.link-primary:hover {
  color: var(--fuci-primary-hover) !important;
}

/* Form styling */
.form-label {
  font-weight: 500;
  margin-bottom: 0.5rem;
  letter-spacing: -0.01em;
}

.form-control {
  transition: border-color 0.25s, box-shadow 0.25s;
}

.form-control:focus {
  box-shadow: 0 0 0 0.2rem var(--fuci-shadow) !important;
}

/* Template preview */
.template-preview {
  font-family: 'Geist Mono', 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
  font-size: 0.8125rem;
  color: var(--fuci-muted-text);
  background: var(--fuci-muted-bg);
  padding: 0.75rem 1rem;
  border-radius: 0.5rem;
  border: 1px solid var(--fuci-border);
  white-space: pre-wrap;
  word-break: break-word;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.01em;
}

/* Monospace font class */
.font-monospace {
  font-family: 'Geist Mono', 'Monaco', 'Menlo', 'Ubuntu Mono', monospace !important;
  font-variant-numeric: tabular-nums;
}

/* Markdown content styling */
.markdown-content h1,
.markdown-content h2,
.markdown-content h3,
.markdown-content h4,
.markdown-content h5,
.markdown-content h6 {
  margin-top: 1.25rem;
  margin-bottom: 0.75rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.markdown-content h1 { font-size: 1.5rem; }
.markdown-content h2 { font-size: 1.25rem; }
.markdown-content h3 { font-size: 1.125rem; }

.markdown-content p {
  margin-bottom: 1rem;
  line-height: 1.7;
}

.markdown-content ul,
.markdown-content ol {
  margin-bottom: 0.75rem;
  padding-left: 1.5rem;
}

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

.markdown-content code {
  font-family: 'Geist Mono', 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
  font-size: 0.875em;
  background: var(--fuci-muted-bg);
  padding: 0.125rem 0.375rem;
  border-radius: 0.25rem;
  font-variant-numeric: tabular-nums;
}

.markdown-content pre {
  font-family: 'Geist Mono', 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
  background: var(--fuci-muted-bg);
  padding: 1rem;
  border-radius: 0.5rem;
  overflow-x: auto;
  margin-bottom: 1rem;
  font-size: 0.875em;
}

.markdown-content pre code {
  background: none;
  padding: 0;
}

.markdown-content blockquote {
  border-left: 3px solid var(--fuci-border);
  padding-left: 1rem;
  margin-left: 0;
  margin-bottom: 1rem;
  color: var(--fuci-muted-text);
  font-style: italic;
}

.markdown-content table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 0.75rem;
}

.markdown-content th,
.markdown-content td {
  border: 1px solid var(--fuci-border);
  padding: 0.5rem;
  text-align: left;
}

.markdown-content th {
  background: var(--fuci-muted-bg);
  font-weight: 600;
}

.markdown-content a {
  color: var(--fuci-fg);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
  opacity: 0.8;
}

.markdown-content a:hover {
  text-decoration-thickness: 2px;
  opacity: 1;
}

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

.markdown-content em {
  font-style: italic;
}

.markdown-content hr {
  border: none;
  border-top: 1px solid var(--fuci-border);
  margin: 1rem 0;
}

/* Copy button styling */
.copy-btn {
  transition: opacity 0.25s, transform 0.2s, background-color 0.2s;
  z-index: 10;
}

.copy-btn:hover,
.copy-btn.hover-opacity-100:hover {
  opacity: 1 !important;
  transform: scale(1.05);
}

.copy-btn:active {
  transform: scale(0.95);
}

/* Result card styling */
.fuci-result-card {
  border: 1px solid var(--fuci-border);
  border-radius: 0.75rem;
  background: var(--fuci-bg);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.fuci-result-card:hover {
  border-color: var(--fuci-border);
  box-shadow: 0 4px 12px var(--fuci-shadow-hover);
}

.fuci-result-card .card-body {
  padding: 1rem;
}

.fuci-copy-btn {
  background: var(--fuci-muted-bg) !important;
  border: 1px solid var(--fuci-border) !important;
  color: var(--fuci-fg) !important;
  border-radius: 0.5rem;
}

.fuci-copy-btn:hover {
  background: var(--fuci-bg) !important;
}

/* Ensure copy button is visible on all cards */
.card:hover .copy-btn {
  opacity: 1;
}

/* Enhance button interactions */
.btn-outline-secondary {
  transition: background-color 0.25s, border-color 0.25s, transform 0.15s;
}

.btn-outline-secondary:hover {
  transform: translateY(-1px);
}

.btn-outline-secondary:active {
  transform: translateY(0) scale(0.98);
}

/* Card improvements */
.card {
  transition: border-color 0.25s, box-shadow 0.25s, transform 0.25s;
}

.card:hover {
  box-shadow: 0 8px 25px -5px var(--fuci-shadow-hover);
}

/* Navbar improvements */
.navbar {
  transition: background-color 0.25s, border-color 0.25s;
}

/* Footer link improvements */
.fuci-footer a {
  transition: color 0.2s;
}

.fuci-footer a:hover {
  color: var(--fuci-primary) !important;
}

/* Badge improvements */
.badge {
  font-weight: 500;
  letter-spacing: 0.02em;
  font-size: 0.75rem;
  padding: 0.25rem 0.5rem;
}

.badge.bg-secondary {
  background: var(--fuci-muted-bg) !important;
  color: var(--fuci-muted-text) !important;
  border: 1px solid var(--fuci-border);
}

/* Skeleton loading states */
.skeleton {
  background: linear-gradient(90deg, var(--fuci-muted-bg) 25%, var(--fuci-bg) 50%, var(--fuci-muted-bg) 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s ease-in-out infinite;
  border-radius: 0.375rem;
}

@keyframes skeleton-loading {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.skeleton-text {
  height: 1em;
  margin-bottom: 0.5em;
}

.skeleton-text.small {
  height: 0.875em;
  width: 60%;
}

.skeleton-title {
  height: 1.5em;
  width: 70%;
  margin-bottom: 1rem;
}

.skeleton-card {
  height: 180px;
  width: 100%;
}