:root {
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --color-primary: #059669;
  --color-primary-hover: #047857;
  --color-primary-light: #ecfdf5;
  --color-primary-border: #a7f3d0;
  --color-bg: #f9fafb;
  --color-surface: #ffffff;
  --color-surface-hover: #f3f4f6;
  --color-text: #111827;
  --color-text-muted: #4b5563;
  --color-text-subtle: #6b7280;
  --color-border: #e5e7eb;
  --color-border-subtle: #f3f4f6;
  --color-code-bg: #1f2937;
  --color-code-text: #f9fafb;
  --color-badge-tested-bg: #ecfdf5;
  --color-badge-tested-text: #065f46;
  --color-badge-tested-border: #a7f3d0;
  --color-badge-untested-bg: #fffbeb;
  --color-badge-untested-text: #92400e;
  --color-badge-untested-border: #fde68a;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #111827;
    --color-surface: #1f2937;
    --color-surface-hover: #374151;
    --color-text: #f9fafb;
    --color-text-muted: #d1d5db;
    --color-text-subtle: #9ca3af;
    --color-border: #374151;
    --color-border-subtle: #1f2937;
    --color-code-bg: #030712;
    --color-code-text: #f3f4f6;
    --color-badge-tested-bg: #064e3b;
    --color-badge-tested-text: #a7f3d0;
    --color-badge-tested-border: #047857;
    --color-badge-untested-bg: #451a03;
    --color-badge-untested-text: #fde68a;
    --color-badge-untested-border: #78350f;
  }
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 40;
}

.header-inner {
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--color-text);
  font-weight: 700;
  font-size: 1.15rem;
}

.brand-sub {
  font-weight: 500;
  color: var(--color-text-subtle);
  font-size: 0.95rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 20px;
}

.nav-link {
  text-decoration: none;
  color: var(--color-text-muted);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  transition: color 0.15s ease;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

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

.nav-link.active {
  background: var(--color-border-subtle);
}

.nav-link-external {
  color: var(--color-primary);
  border: 1px solid var(--color-border);
}

/* Hero */
.hero {
  padding: 40px 0 28px;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
}

.hero-title {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  max-width: 760px;
  margin-bottom: 20px;
}

.callout-box {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  font-size: 0.92rem;
  color: var(--color-text-muted);
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.callout-box strong {
  color: var(--color-text);
}

/* Controls / Search Bar */
.controls-bar {
  margin: 28px 0 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
}

.search-box {
  position: relative;
  flex: 1;
  min-width: 260px;
  max-width: 440px;
}

.search-box .icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-subtle);
  pointer-events: none;
}

.search-input {
  width: 100%;
  padding: 10px 14px 10px 36px;
  font-size: 0.95rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-text);
  font-family: inherit;
  outline: none;
}

.search-input:focus {
  border-color: var(--color-primary);
}

.filter-group {
  display: flex;
  gap: 8px;
}

.filter-btn {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: 0.88rem;
  font-weight: 500;
  padding: 7px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.15s ease;
}

.filter-btn.active, .filter-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.filter-btn.active {
  background: var(--color-border-subtle);
}

/* Grid & Cards - Strictly NO side borders */
.parsers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 20px;
  margin-bottom: 48px;
}

.parser-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-sm);
  transition: border-color 0.15s ease;
}

.parser-card:hover {
  border-color: #9ca3af;
}

.card-top {
  margin-bottom: 16px;
}

.card-header-line {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 8px;
}

.parser-name {
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.parser-name a {
  color: inherit;
  text-decoration: none;
}

.parser-name a:hover {
  color: var(--color-primary);
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 9999px;
  line-height: 1.3;
  white-space: nowrap;
}

.badge-tested {
  background: var(--color-badge-tested-bg);
  color: var(--color-badge-tested-text);
  border: 1px solid var(--color-badge-tested-border);
}

.badge-untested {
  background: var(--color-badge-untested-bg);
  color: var(--color-badge-untested-text);
  border: 1px solid var(--color-badge-untested-border);
}

.badge-version {
  background: var(--color-bg);
  color: var(--color-text-subtle);
  border: 1px solid var(--color-border);
}

.parser-desc {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  margin-bottom: 12px;
  line-height: 1.4;
}

.parser-meta {
  font-size: 0.82rem;
  color: var(--color-text-subtle);
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 14px;
}

.meta-row {
  display: flex;
  gap: 6px;
}

.meta-label {
  font-weight: 600;
  color: var(--color-text-muted);
  min-width: 76px;
}

.meta-val {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  word-break: break-all;
}

/* Sample notification box */
.sample-preview {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 10px 12px;
  margin-bottom: 16px;
  font-size: 0.82rem;
}

.sample-title {
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 3px;
}

.sample-body {
  color: var(--color-text-muted);
  line-height: 1.35;
}

.sample-tag {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 700;
  color: var(--color-text-subtle);
  margin-bottom: 4px;
}

/* Card Actions */
.card-actions {
  display: flex;
  gap: 8px;
  align-items: center;
  padding-top: 14px;
  border-top: 1px solid var(--color-border);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  padding: 7px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  cursor: pointer;
  text-decoration: none;
  transition: all 0.15s ease;
}

.btn:hover {
  background: var(--color-surface-hover);
  border-color: #9ca3af;
}

.btn-primary {
  background: var(--color-primary);
  color: #ffffff;
  border-color: var(--color-primary);
}

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

.btn-sm {
  padding: 5px 10px;
  font-size: 0.8rem;
}

.btn-link {
  margin-left: auto;
  border: none;
  background: transparent;
  color: var(--color-primary);
  padding: 6px 4px;
}

.btn-link:hover {
  text-decoration: underline;
  background: transparent;
}

/* Parser Detail View */
.detail-header {
  padding: 32px 0 24px;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--color-text-subtle);
  margin-bottom: 12px;
}

.breadcrumb a {
  color: var(--color-text-muted);
  text-decoration: none;
}

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

.detail-title-line {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 12px;
}

.detail-actions {
  display: flex;
  gap: 10px;
}

.detail-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 32px;
  padding: 32px 0 64px;
}

@media (max-width: 860px) {
  .detail-grid {
    grid-template-columns: 1fr;
  }
}

.detail-section {
  margin-bottom: 32px;
}

.section-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 14px;
  letter-spacing: -0.01em;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
}

/* Rules list */
.rule-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px;
  margin-bottom: 16px;
}

.rule-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.rule-id {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--color-text);
}

.direction-tag {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
  text-transform: uppercase;
}

.dir-in {
  background: #ecfdf5;
  color: #065f46;
}

.dir-out {
  background: #fef2f2;
  color: #991b1b;
}

.dir-info {
  background: #f3f4f6;
  color: #4b5563;
}

.rule-field {
  margin-bottom: 10px;
  font-size: 0.85rem;
}

.field-label {
  font-weight: 600;
  color: var(--color-text-subtle);
  margin-bottom: 2px;
}

.field-regex {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  background: var(--color-bg);
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-all;
}

/* Code viewer */
.code-block-wrapper {
  position: relative;
  margin-top: 12px;
}

.code-block {
  background: var(--color-code-bg);
  color: var(--color-code-text);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  padding: 16px;
  border-radius: var(--radius-md);
  overflow-x: auto;
  max-height: 480px;
  line-height: 1.45;
}

.code-copy-btn {
  position: absolute;
  top: 10px;
  right: 10px;
  background: rgba(255, 255, 255, 0.15);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.code-copy-btn:hover {
  background: rgba(255, 255, 255, 0.25);
  border-color: rgba(255, 255, 255, 0.4);
}

/* Guide formatting */
.guide-content {
  padding: 36px 0 64px;
  max-width: 820px;
}

.guide-prose h1 {
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.guide-prose h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 36px 0 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
}

.guide-prose h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin: 24px 0 10px;
}

.guide-prose p {
  margin-bottom: 16px;
  color: var(--color-text-muted);
  font-size: 1rem;
}

.guide-prose ul, .guide-prose ol {
  margin: 0 0 18px 24px;
  color: var(--color-text-muted);
}

.guide-prose li {
  margin-bottom: 6px;
}

.guide-prose code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: var(--color-border-subtle);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
}

.guide-prose pre {
  background: var(--color-code-bg);
  color: var(--color-code-text);
  padding: 16px;
  border-radius: var(--radius-md);
  overflow-x: auto;
  margin: 18px 0;
  font-size: 0.85rem;
  line-height: 1.45;
}

.guide-prose pre code {
  background: transparent;
  padding: 0;
  border: none;
  color: inherit;
}

.lang-switch {
  display: inline-flex;
  gap: 6px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 4px;
  margin-bottom: 24px;
}

.lang-switch a {
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
}

.lang-switch a.active {
  background: var(--color-primary);
  color: #ffffff;
}

/* Toast alert */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: #111827;
  color: #ffffff;
  padding: 10px 18px;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 600;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
  display: flex;
  align-items: center;
  gap: 8px;
  transform: translateY(100px);
  opacity: 0;
  transition: all 0.25s ease;
  z-index: 100;
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}

/* Footer */
.site-footer {
  margin-top: auto;
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
  padding: 28px 0;
  font-size: 0.88rem;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-subtext {
  color: var(--color-text-subtle);
  font-size: 0.82rem;
  margin-top: 4px;
}

.footer-links {
  display: flex;
  gap: 18px;
}

.footer-links a {
  color: var(--color-text-muted);
  text-decoration: none;
}

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