/* ============================================================
   RedactSEO Docs · style.css
   Standalone modern dark UI for the product documentation.
   No external dependencies, no JS framework required.
   ============================================================ */

:root {
  --bg:          #0b0f17;
  --bg-soft:     #11171f;
  --bg-softer:   #0d121b;
  --border:      #1f2733;
  --border-soft: #1a212c;
  --text:        #e6edf3;
  --text-2:      #cfd9e3;
  --text-3:      #8ea0b3;
  --text-4:      #5a6a7d;
  --accent:      #ff2d76;
  --accent-2:    #19c8e6;
  --accent-soft: rgba(255, 45, 118, 0.12);
  --ok:          #4ade80;
  --warn:        #fbbf24;
  --bad:         #f87171;
  --mono:        ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;
  --radius:      12px;
  --shadow:      0 10px 40px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); }
body {
  font: 15px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
        "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: #ff7aa9; text-decoration: none; transition: color .15s ease; }
a:hover { color: #ffa9c6; }

::selection { background: rgba(255, 45, 118, .35); color: #fff; }

.layout { display: grid; grid-template-columns: 280px 1fr; min-height: 100vh; }

/* Mobile navbar (hamburger → off-canvas sidebar). Hidden on desktop. */
.doc-topbar { display: none; }
.doc-backdrop { display: none; }
.doc-burger {
  display: inline-flex; flex-direction: column; justify-content: center; gap: 5px;
  width: 42px; height: 42px; padding: 0 10px; border: 1px solid var(--border);
  border-radius: 10px; background: var(--bg-soft); cursor: pointer; flex: none;
}
.doc-burger span { display: block; height: 2px; width: 20px; background: var(--text); border-radius: 2px; }

.sidebar { background: var(--bg-soft); border-right: 1px solid var(--border); height: 100vh; position: sticky; top: 0; }
.sidebar__inner { position: sticky; top: 0; padding: 28px 24px; height: 100vh; overflow-y: auto; }
.sidebar__inner::-webkit-scrollbar { width: 8px; }
.sidebar__inner::-webkit-scrollbar-track { background: transparent; }
.sidebar__inner::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }

.brand { display: flex; align-items: center; gap: 12px; margin-bottom: 28px; text-decoration: none; }
.brand:hover { text-decoration: none; }
.brand__logo {
  width: 38px; height: 38px; border-radius: 11px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  display: flex; align-items: center; justify-content: center;
  font-size: 19px; box-shadow: 0 4px 14px rgba(255,45,118,.35); color: #fff;
}
.brand__title { color: var(--text); font-size: 16px; font-weight: 700; letter-spacing: -.01em; }
.brand__sub   { color: var(--text-3); font-size: 11.5px; }

.nav-group { margin-bottom: 22px; }
.nav-group__title { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; color: var(--text-4); padding: 0 12px 8px; }
.nav-group ul { list-style: none; padding: 0; margin: 0; }
.nav-group a { display: flex; align-items: center; gap: 10px; padding: 8px 12px; border-radius: 8px; color: var(--text-2); font-size: 14px; font-weight: 500; transition: background .12s ease, color .12s ease; }
.nav-group a:hover { background: var(--bg-softer); color: var(--text); }
.nav-group a.is-active { background: var(--accent-soft); color: #ff9bbf; }
.nav-group a .ico { font-size: 16px; opacity: .8; width: 18px; text-align: center; }

.main { padding: 56px 64px 96px; max-width: 920px; }
@media (max-width: 900px) { .main { padding: 32px 24px 64px; } }

.crumbs { font-size: 12.5px; color: var(--text-3); margin-bottom: 18px; text-transform: uppercase; letter-spacing: .06em; }
.crumbs a { color: var(--text-3); }
.crumbs a:hover { color: var(--text); }

h1, h2, h3, h4 { color: var(--text); }
h1 { font-size: 36px; line-height: 1.18; font-weight: 800; letter-spacing: -.025em; margin: 0 0 14px; }
.lead { font-size: 17px; color: var(--text-3); margin: 0 0 32px; max-width: 70ch; }
h2 { font-size: 24px; line-height: 1.25; font-weight: 700; letter-spacing: -.015em; margin: 48px 0 14px; padding-top: 12px; border-top: 1px solid var(--border); }
h2:first-of-type { border-top: 0; padding-top: 0; margin-top: 0; }
h3 { font-size: 18px; font-weight: 700; letter-spacing: -.01em; margin: 32px 0 10px; }
h4 { font-size: 15px; font-weight: 700; margin: 22px 0 8px; color: var(--text-2); text-transform: uppercase; letter-spacing: .04em; }

p { margin: 0 0 14px; color: var(--text-2); max-width: 72ch; }
ul, ol { margin: 0 0 14px; padding-left: 22px; max-width: 72ch; }
li { margin-bottom: 6px; color: var(--text-2); }
li > ul, li > ol { margin-top: 6px; margin-bottom: 6px; }
strong { color: var(--text); font-weight: 600; }
hr { border: 0; border-top: 1px solid var(--border); margin: 28px 0; }

code { font-family: var(--mono); font-size: .9em; background: var(--bg-softer); border: 1px solid var(--border); padding: 1px 7px; border-radius: 5px; color: #c5d2e0; }
pre { background: var(--bg-softer); border: 1px solid var(--border-soft); border-radius: var(--radius); padding: 16px 18px; overflow-x: auto; font-family: var(--mono); font-size: 13px; line-height: 1.6; margin: 14px 0 22px; color: #d6e2f0; max-width: 100%; }
pre code { background: transparent; border: 0; padding: 0; color: inherit; font-size: inherit; }
pre::-webkit-scrollbar { height: 8px; }
pre::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }

.table-wrap { overflow-x: auto; margin: 14px 0 22px; }
table { width: 100%; border-collapse: collapse; background: var(--bg-soft); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; font-size: 13.5px; }
th, td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--border-soft); vertical-align: top; }
th { color: var(--text-3); text-transform: uppercase; font-size: 11px; font-weight: 700; letter-spacing: .06em; background: var(--bg-softer); }
td { color: var(--text-2); }
tr:last-child td { border-bottom: 0; }
tr:hover td { background: rgba(255,255,255,.015); }
td code, th code { font-size: 12px; }

.callout { margin: 18px 0; padding: 14px 16px; border-radius: var(--radius); border-left: 3px solid; background: var(--bg-soft); border: 1px solid var(--border); font-size: 14px; color: var(--text-2); }
.callout > :first-child { margin-top: 0; }
.callout > :last-child  { margin-bottom: 0; }
.callout strong { display: inline-block; margin-right: 6px; }
.callout--info { border-left-color: var(--accent); background: linear-gradient(90deg, rgba(255,45,118,.10), transparent 60%); }
.callout--ok   { border-left-color: var(--ok);   background: linear-gradient(90deg, rgba(74,222,128,.10), transparent 60%); color: #b6f0c5; }
.callout--warn { border-left-color: var(--warn); background: linear-gradient(90deg, rgba(251,191,36,.10), transparent 60%); color: #fde9b3; }
.callout--bad  { border-left-color: var(--bad);  background: linear-gradient(90deg, rgba(248,113,113,.10), transparent 60%); color: #fcb6b6; }

kbd { font-family: var(--mono); font-size: 12px; background: var(--bg-softer); border: 1px solid var(--border); border-bottom-width: 2px; padding: 2px 6px; border-radius: 4px; color: var(--text); }

.hero { padding: 60px 0 12px; }
.hero h1 { background: linear-gradient(135deg, #fff, #ff9bbf 60%, #8fe9f5); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin: 28px 0 40px; }
@media (max-width: 720px) { .cards { grid-template-columns: 1fr; } }
.card { display: block; background: var(--bg-soft); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px 22px; text-decoration: none; transition: transform .12s ease, border-color .12s ease, background .12s ease; }
.card:hover { text-decoration: none; transform: translateY(-2px); border-color: rgba(255,45,118,.35); background: #16121a; }
.card__ico { width: 38px; height: 38px; border-radius: 10px; background: var(--accent-soft); display: flex; align-items: center; justify-content: center; font-size: 18px; color: #ff9bbf; margin-bottom: 14px; }
.card__title { color: var(--text); font-size: 16px; font-weight: 700; margin: 0 0 4px; }
.card__desc  { color: var(--text-3); font-size: 13.5px; margin: 0; }

.steps { counter-reset: step; list-style: none; padding: 0; }
.steps > li { position: relative; padding: 0 0 4px 44px; margin-bottom: 18px; }
.steps > li::before { counter-increment: step; content: counter(step); position: absolute; left: 0; top: -2px; width: 28px; height: 28px; border-radius: 8px; background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #fff; font-weight: 700; font-size: 13px; display: flex; align-items: center; justify-content: center; }

.pill { display: inline-flex; align-items: center; font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .04em; padding: 3px 9px; border-radius: 999px; background: var(--bg-softer); color: var(--text-3); border: 1px solid var(--border); }
.pill--ok   { color: var(--ok);   border-color: rgba(74,222,128,.3);   background: rgba(74,222,128,.08); }
.pill--warn { color: var(--warn); border-color: rgba(251,191,36,.3);   background: rgba(251,191,36,.08); }
.pill--bad  { color: var(--bad);  border-color: rgba(248,113,113,.3);  background: rgba(248,113,113,.08); }

.docfoot { margin: 64px 0 0; padding: 22px 0 0; border-top: 1px solid var(--border); color: var(--text-4); font-size: 12.5px; text-align: center; }

/* ── Mobile: off-canvas sidebar via hamburger (placed last so it wins over the
   base .sidebar sticky/height rules at equal specificity). ────────────────── */
@media (max-width: 900px) {
  .doc-topbar {
    display: flex; align-items: center; gap: 12px; position: sticky; top: 0; z-index: 50;
    padding: 10px 14px; background: var(--bg-soft); border-bottom: 1px solid var(--border);
  }
  .doc-topbar__title { font-weight: 700; font-size: 15px; color: var(--text); }
  .doc-topbar__title:hover { color: var(--text); }

  .layout { grid-template-columns: 1fr; }
  .sidebar {
    position: fixed; top: 0; left: 0; width: 280px; max-width: 82vw; height: 100%;
    z-index: 70; transform: translateX(-100%); transition: transform .25s ease;
    border-right: 1px solid var(--border); border-bottom: 0; box-shadow: var(--shadow);
  }
  .sidebar__inner { position: static; height: 100%; }
  .doc-nav-toggle:checked ~ .layout .sidebar { transform: translateX(0); }
  .doc-nav-toggle:checked ~ .doc-backdrop {
    display: block; position: fixed; inset: 0; z-index: 60; background: rgba(0, 0, 0, .55);
  }
}