/* PARALLAXIN — Global Styles
   Color system encodes the evidence standard visually.
   Green = documented. Amber = inference. Red = gap/contested. */

/* ============================================================
   FONTS
   ============================================================ */
@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:ital,wght@0,400;0,600;0,700;1,400&family=IBM+Plex+Sans:ital,wght@0,400;0,500;0,600;0,700;1,400&display=swap');

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

/* ============================================================
   DESIGN TOKENS
   ============================================================ */
:root {
  /* Typography */
  --font-sans: 'IBM Plex Sans', system-ui, sans-serif;
  --font-mono: 'IBM Plex Mono', 'Courier New', monospace;

  /* Evidence color system */
  --color-documented: #22c55e;
  /* green — verified fact */
  --color-documented-bg: #052e16;
  --color-inference: #f59e0b;
  /* amber — labeled inference */
  --color-inference-bg: #1c1300;
  --color-gap: #f87171;
  /* red — the gap itself */
  --color-gap-bg: #1f0505;
  --color-contested: #fb923c;
  /* orange — single-source */
  --color-contested-bg: #1a0a00;
  --color-source-needed: #ef4444;
  /* bright red — missing source */

  /* Base colors — dark theme */
  --color-bg: #0a0a0a;
  --color-surface: #111111;
  --color-surface-hover: #161616;
  --color-border: #222222;
  --color-text-primary: #f5f5f5;
  --color-text-secondary: #a3a3a3;
  --color-text-muted: #525252;
  --color-accent: #4a9eff;
}

/* ============================================================
   BASE
   ============================================================ */
html {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text-primary);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* RTL support */
[dir="rtl"] {
  font-family: 'IBM Plex Sans Arabic', var(--font-sans);
}

/* ============================================================
   TYPOGRAPHY
   ============================================================ */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-sans);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text-primary);
}

p {
  line-height: 1.7;
}

a {
  color: var(--color-documented);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

code,
pre {
  font-family: var(--font-mono);
  font-size: 0.875em;
}

/* ============================================================
   SITE HEADER
   ============================================================ */
.site-header {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg);
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-header-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.site-logo {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1rem;
  color: var(--color-text-primary);
  text-decoration: none;
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.site-logo-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-documented);
  animation: pulse 3s ease-in-out infinite;
}

@keyframes pulse {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0.3;
  }
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.site-nav a {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  transition: color 0.15s;
}

.site-nav a:hover {
  color: var(--color-text-primary);
  text-decoration: none;
}

.site-nav-github {
  border: 1px solid var(--color-border);
  padding: 0.25rem 0.6rem;
  font-family: var(--font-mono);
}

.site-nav a.active {
  color: var(--color-text-primary);
  border-bottom: 2px solid var(--color-documented);
  padding-bottom: 2px;
}

@media (max-width: 800px) {
  .site-nav {
    gap: 1rem;
  }
}

@media (max-width: 640px) {
  .site-header-inner {
    height: auto;
    min-height: 52px;
    padding-top: 0.75rem;
    padding-bottom: 0.75rem;
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }

  .site-nav {
    width: 100%;
    flex-wrap: wrap;
    gap: 0.75rem 1.25rem;
  }

  .site-nav a {
    font-size: 0.75rem;
  }
}

@media (max-width: 400px) {
  .site-header-inner {
    padding-left: 1rem;
    padding-right: 1rem;
    gap: 0.75rem;
  }

  .site-nav {
    gap: 0.5rem 0.75rem;
  }

  .site-nav a {
    font-size: 0.7rem;
    letter-spacing: 0.02em;
  }

  .site-nav-github {
    display: none;
  }
}

/* ============================================================
   SITE FOOTER
   ============================================================ */
.site-footer {
  margin-top: auto;
  border-top: 1px solid var(--color-border);
  padding: 1.5rem;
}

.site-footer-inner {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
  align-items: center;
}

.site-footer p {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
}

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

.site-footer a:hover {
  color: var(--color-documented);
}

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

/* Source tier labels */
.source-tier {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  padding: 0.15rem 0.45rem;
  border-radius: 2px;
  white-space: nowrap;
  display: inline-block;
}

.source-tier--tier-1 {
  background: var(--color-documented-bg);
  color: var(--color-documented);
}

.source-tier--tier-2 {
  background: var(--color-inference-bg);
  color: var(--color-inference);
}

.source-tier--tier-3 {
  background: var(--color-contested-bg);
  color: var(--color-contested);
}

.source-tier--tier-4 {
  background: var(--color-source-needed);
  color: var(--color-bg);
}

/* Table defaults for content pages */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.9rem;
}

th {
  text-align: left;
  padding: 0.75rem;
  border-bottom: 2px solid var(--color-border);
  color: var(--color-text-secondary);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

td {
  padding: 0.75rem;
  border-bottom: 1px solid var(--color-border);
  vertical-align: top;
}

/* Claim Autopsy specific */
blockquote {
  border-left: 4px solid var(--color-accent);
  padding: 1rem 1.5rem;
  margin: 1.5rem 0;
  background: var(--color-surface);
  font-size: 1.1rem;
}

[dir="rtl"] blockquote {
  border-left: none;
  border-right: 4px solid var(--color-accent);
}

blockquote cite {
  display: block;
  margin-top: 0.5rem;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  font-style: normal;
}

.evidence-item {
  padding: 1rem 0;
  border-bottom: 1px solid var(--color-border);
}

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

.benefit-item {
  padding: 0.75rem 0;
}

.sequence {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.8;
  background: var(--color-surface);
  padding: 1.5rem;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  white-space: pre-wrap;
  overflow-x: auto;
}

.meta {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-bottom: 2rem;
}

/* Checklist */
.checklist {
  list-style: none;
  padding: 0;
}

.checklist li {
  padding: 0.4rem 0;
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.checklist li::before {
  margin-right: 0.5rem;
  font-weight: bold;
}

[dir="rtl"] .checklist li::before {
  margin-right: 0;
  margin-left: 0.5rem;
}

.check-pass::before {
  content: "✓";
  color: var(--color-documented);
}

.check-fail::before {
  content: "✗";
  color: var(--color-source-needed);
}

.body-content {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
}

/* ═══ RTL SUPPORT — Arabic/Farsi ═══ */

/* Tables: flip text alignment */
[dir="rtl"] th,
[dir="rtl"] td {
  text-align: right;
}

/* Timeline: flip track to right side */
[dir="rtl"] .timeline-track {
  padding-left: 0;
  padding-right: 2rem;
}
[dir="rtl"] .timeline-track::before {
  left: auto;
  right: 0.5rem;
}
[dir="rtl"] .timeline-marker {
  left: auto;
  right: -1.75rem;
}

/* Border-left items: flip to border-right */
[dir="rtl"] .stated-item,
[dir="rtl"] .action-item,
[dir="rtl"] .antecedent-item,
[dir="rtl"] .evidence-item {
  padding-left: 1rem;
  padding-right: 1.25rem;
  border-left: none;
  border-right-width: 3px;
  border-right-style: solid;
}
[dir="rtl"] .stated-item { border-right-color: var(--color-text-muted); }
[dir="rtl"] .action-item { border-right-color: var(--color-documented); }
[dir="rtl"] .antecedent-item { border-right-color: var(--color-documented); }
[dir="rtl"] .antecedent-item--inference { border-right-color: var(--color-inference); }
[dir="rtl"] .evidence-item--supporting { border-right-color: var(--color-documented); }
[dir="rtl"] .evidence-item--contradicting { border-right-color: var(--color-gap); }

/* Gap analysis: flip border-left */
[dir="rtl"] .gap-item {
  border-left: none;
  border-right: 4px solid;
}

/* Verdict banner: flip border-left */
[dir="rtl"] .verdict-banner {
  border-left: none;
  border-right: 4px solid;
}
[dir="rtl"] .verdict--no { border-right-color: var(--color-gap); }
[dir="rtl"] .verdict--yes { border-right-color: var(--color-documented); }
[dir="rtl"] .verdict--partial { border-right-color: var(--color-inference); }
[dir="rtl"] .verdict--insufficient { border-right-color: var(--color-contested); }

/* Framing note: flip border */
[dir="rtl"] .framing-note {
  border-left: none;
  border-right: 4px solid var(--color-inference);
}

/* Gap block: flip border */
[dir="rtl"] .gap-block {
  border-left: none;
  border-right: 4px solid var(--color-gap);
}

/* Gap comparison: flip stated/documented border */
[dir="rtl"] .gap-stated-block {
  border-right: none;
  border-left: 1px solid var(--color-border);
}

/* Draft banner: flip border */
[dir="rtl"] .draft-banner {
  border-left: none;
  border-right: 4px solid var(--color-inference);
}

/* Personal interests: flip border */
[dir="rtl"] .interest-item--documented {
  border-left: none;
  border-right: 3px solid var(--color-documented);
}
[dir="rtl"] .interest-item--inference {
  border-left: none;
  border-right: 3px solid var(--color-inference);
}

/* About section list items: flip dash position */
[dir="rtl"] .about-col li {
  padding-left: 0;
  padding-right: 1rem;
}
[dir="rtl"] .about-col li::before {
  left: auto;
  right: 0;
}

/* Confidence margin flip */
[dir="rtl"] .gap-confidence {
  margin-left: 0;
  margin-right: auto;
}

/* Language switcher */
.site-nav-lang {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  padding: 0.2rem 0.5rem;
  border: 1px solid var(--color-border);
  border-radius: 2px;
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: border-color 0.15s, color 0.15s;
}
.site-nav-lang:hover {
  border-color: var(--color-documented);
  color: var(--color-documented);
}