/* ============================================================
   ReadFX Documentation Theme
   Palette: dusty-grape #656095 | black #030304 | yellow #FFC300
   ============================================================ */

:root {
  --dusty-grape:   #656095;
  --black:         #030304;
  --yellow:        #FFC300;

  /* Derived shades */
  --bg-page:       #080810;
  --bg-card:       #10101c;
  --bg-code:       #181828;
  --grape-light:   #9b97c5;
  --grape-xlight:  #ccc9e4;
  --grape-dark:    #3a384f;
  --grape-xdark:   #1a1929;

  --text-primary:  #dedad8;
  --text-muted:    #7a778f;
  --text-code:     #c4c0e0;
  --border:        #272540;
  --border-accent: #656095;

  --link:          #FFC300;
  --link-hover:    #ffe566;

  --radius:    8px;
  --radius-sm: 4px;
  --radius-lg: 12px;
}

/* ── Reset ─────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  background: var(--bg-page);
  color: var(--text-primary);
  font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  min-height: 100vh;
}

/* ── Navigation ─────────────────────────────────────────────── */
.nav {
  align-items: center;
  background: var(--dusty-grape);
  padding: 0 2rem;
  display: flex;
  align-items: stretch;  /* all children fill the full 56px height */
  position: sticky;
  top: 0;
  z-index: 1000;
  height: 56px;
  box-shadow: 0 2px 20px rgba(0,0,0,0.6);
}

.nav-brand {
  display: flex;
  align-items: center;   /* vertically centre within the stretched height */
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--yellow);
  text-decoration: none;
  letter-spacing: -0.02em;
  margin-right: 2rem;
  flex-shrink: 0;
  font-family: monospace;
}
.nav-brand:hover { text-decoration: none; color: var(--yellow); opacity: 0.85; }

.nav {
  display: flex;
  align-items: center;  /* instead of stretch */
  height: 56px;
}

.nav-links{
  display: flex;
  align-items: stretch;
  height: 100%;
  gap: 0.25rem;              /* NEW: controls spacing between items */
}

.nav-links li{
  height: 100%;
  display: flex;
}

.nav-links li a{
  height: 100%;
  display: flex;
  align-items: center;
  padding: 0 0.95rem;        /* RESTORE/KEEP: gives breathing room + click target */
}
.nav-links li a:hover {
  color: var(--yellow);
  background: rgba(0,0,0,0.15);
  text-decoration: none;
}
.nav-links li a.active {
  color: var(--yellow);
  box-shadow: inset 0 -3px 0 var(--yellow);
}

.nav-links li.nav-sep { flex: 1; }

.nav-links li.nav-ext {
  display: flex;
  align-items: center;   /* centre the pill button vertically */
  margin-left: 0.5rem;
}
.nav-links li.nav-ext a {
  display: flex;
  align-items: center;
  height: auto;
  color: var(--yellow);
  border: 1px solid rgba(255,195,0,0.4);
  border-radius: var(--radius-sm);
  padding: 0.3rem 0.75rem;
  font-size: 0.8rem;
  font-weight: 600;
}
.nav-links li.nav-ext a:hover {
  background: rgba(255,195,0,0.15);
  text-decoration: none;
}

/* ── Hero ───────────────────────────────────────────────────── */
.hero {
  background: linear-gradient(160deg, var(--grape-xdark) 0%, var(--bg-page) 60%);
  border-bottom: 1px solid var(--border);
  padding: 6rem 2rem 5rem;
  text-align: center;
}

.hero-eyebrow {
  display: inline-block;
  background: var(--grape-dark);
  color: var(--grape-xlight);
  border: 1px solid var(--border-accent);
  border-radius: 100px;
  padding: 0.25rem 0.85rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
  font-family: monospace;
}

.hero-title {
  font-size: 4rem;
  font-weight: 900;
  color: #fff;
  letter-spacing: -0.05em;
  line-height: 1;
  margin-bottom: 0.5rem;
}
.hero-title .accent { color: var(--yellow); }

.hero-tagline {
  font-size: 1.2rem;
  color: var(--text-muted);
  max-width: 520px;
  margin: 1rem auto 2.5rem;
  line-height: 1.5;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

.hero-install {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  background: var(--bg-code);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.6rem 1.25rem;
  font-family: monospace;
  font-size: 0.95rem;
  color: var(--text-code);
  margin-top: 0.5rem;
}
.hero-install .prompt { color: var(--text-muted); user-select: none; }
.hero-install .cmd { color: var(--yellow); }

/* ── Buttons ────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.6rem;
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.15s;
  border: 2px solid transparent;
}
.btn:hover { text-decoration: none; }

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

.btn-outline {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,0.3);
}
.btn-outline:hover { border-color: var(--yellow); color: var(--yellow); }

/* ── Layout ─────────────────────────────────────────────────── */
.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 2rem;
}

.main {
  max-width: 960px;
  margin: 0 auto;
  padding: 3.5rem 2rem 5rem;
}

/* ── Page header (inner pages) ──────────────────────────────── */
.page-header {
  background: linear-gradient(160deg, var(--grape-xdark) 0%, var(--bg-page) 70%);
  border-bottom: 1px solid var(--border);
  padding: 3.5rem 2rem 2.5rem;
}
.page-header-inner {
  max-width: 960px;
  margin: 0 auto;
}
.page-header h1 {
  font-size: 2.25rem;
  margin-bottom: 0.5rem;
}
.page-header p {
  color: var(--text-muted);
  font-size: 1.05rem;
  margin: 0;
}

/* ── Features grid ──────────────────────────────────────────── */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
  margin: 3rem 0;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: border-color 0.2s, transform 0.15s;
}
.feature-card:hover {
  border-color: var(--dusty-grape);
  transform: translateY(-2px);
}

.feature-icon {
  font-size: 1.75rem;
  margin-bottom: 0.75rem;
  display: block;
}

.feature-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.5rem;
}

.feature-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.55;
}

/* ── Typography (content pages) ─────────────────────────────── */
.main h1 {
  font-size: 2rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 1.25rem;
  letter-spacing: -0.02em;
}

.main h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: #fff;
  margin: 3rem 0 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

.main h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--grape-xlight);
  margin: 2rem 0 0.75rem;
}

.main h4 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--grape-light);
  margin: 1.5rem 0 0.5rem;
}

p { margin-bottom: 1rem; }

/* ── Code ───────────────────────────────────────────────────── */
:not(pre) > code {
  font-family: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', 'Consolas', monospace;
  font-size: 0.85em;
  background: var(--bg-code);
  color: var(--yellow);
  padding: 0.15em 0.45em;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}

pre {
  background: var(--bg-code);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  overflow-x: auto;
  margin: 0.5rem 0 1.75rem;
  position: relative;
}

pre code {
  font-family: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', 'Consolas', monospace;
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--text-code);
  background: none;
  border: none;
  padding: 0;
}

/* Lang label above code block */
.code-wrap { margin: 0.5rem 0 1.75rem; }
.code-label {
  display: inline-block;
  background: var(--dusty-grape);
  color: rgba(255,255,255,0.9);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.2rem 0.65rem;
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  font-family: monospace;
}
.code-wrap pre { margin: 0; border-radius: 0 var(--radius) var(--radius) var(--radius); }

/* ── Tables ─────────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; margin: 1rem 0 1.75rem; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

th {
  background: var(--grape-dark);
  color: var(--grape-xlight);
  text-align: left;
  padding: 0.75rem 1rem;
  font-weight: 600;
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  white-space: nowrap;
}

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

tr:hover td { background: var(--bg-card); }

/* ── Callouts ───────────────────────────────────────────────── */
.callout {
  background: var(--bg-card);
  border-left: 4px solid var(--dusty-grape);
  padding: 1rem 1.25rem;
  border-radius: 0 var(--radius) var(--radius) 0;
  margin: 1.25rem 0;
  font-size: 0.9rem;
}
.callout.warning { border-left-color: var(--yellow); }
.callout.tip     { border-left-color: #4fc66a; }
.callout strong { color: #fff; display: block; margin-bottom: 0.25rem; }

/* ── API cards ──────────────────────────────────────────────── */
.api-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 1rem;
  margin: 1.5rem 0;
}

.api-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  transition: border-color 0.2s;
}
.api-card:hover { border-color: var(--dusty-grape); }

.api-card-name {
  font-family: monospace;
  font-size: 1rem;
  font-weight: 700;
  color: var(--yellow);
  margin-bottom: 0.5rem;
}

.api-card-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.15rem 0.5rem;
  border-radius: 100px;
  margin-bottom: 0.5rem;
}
.tag-grape  { background: var(--grape-dark); color: var(--grape-xlight); border: 1px solid var(--border-accent); }
.tag-yellow { background: rgba(255,195,0,.12); color: var(--yellow); border: 1px solid rgba(255,195,0,.3); }
.tag-green  { background: rgba(79,198,106,.1); color: #4fc66a; border: 1px solid rgba(79,198,106,.25); }

.api-card-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 0.5rem;
  line-height: 1.5;
}

/* ── Steps (tutorial) ───────────────────────────────────────── */
.steps { margin: 2rem 0; }

.step {
  display: flex;
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}

.step-num {
  flex-shrink: 0;
  width: 2.5rem;
  height: 2.5rem;
  background: var(--dusty-grape);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1rem;
  margin-top: 0.15rem;
}

.step-body h3 { margin-top: 0; }

/* ── Section divider ────────────────────────────────────────── */
.section-title {
  font-size: 1.75rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
}
.section-title::after {
  content: '';
  display: block;
  width: 40px;
  height: 3px;
  background: var(--yellow);
  margin-top: 0.4rem;
  border-radius: 2px;
}

.section-sub {
  color: var(--text-muted);
  margin-bottom: 0;
  font-size: 0.95rem;
}

/* ── Links ──────────────────────────────────────────────────── */
a { color: var(--yellow); text-decoration: none; }
a:hover { color: var(--link-hover); text-decoration: underline; }

/* ── Lists ──────────────────────────────────────────────────── */
ul, ol { padding-left: 1.5rem; margin-bottom: 1rem; }
li { margin-bottom: 0.3rem; }

/* ── Footer ─────────────────────────────────────────────────── */
.footer {
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  padding: 2.5rem 2rem;
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-muted);
}
.footer a { color: var(--grape-light); }
.footer-links { margin-top: 0.5rem; }
.footer-links a { margin: 0 0.75rem; }

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 680px) {
  .hero-title   { font-size: 2.5rem; }
  .nav-links    { display: none; }
  .features     { grid-template-columns: 1fr; }
  .main, .page-header { padding-left: 1.25rem; padding-right: 1.25rem; }
  .step         { flex-direction: column; gap: 0.75rem; }
  .api-cards    { grid-template-columns: 1fr 1fr; }
}