/* ════════════════════════════════════════════════════════════════════════
   OpsGrep — Header, Navigation & Mega Menu
   ════════════════════════════════════════════════════════════════════════ */

/* ── Header shell ────────────────────────────────────────────────────────── */
.og-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(13,17,23,.96);
  border-bottom: 1px solid var(--og-border);
  backdrop-filter: blur(12px) saturate(180%);
  -webkit-backdrop-filter: blur(12px) saturate(180%);
}

.og-header__inner {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 60px;
}

/* ── Logo ────────────────────────────────────────────────────────────────── */
.og-logo {
  display: flex;
  align-items: center;
  gap: .55rem;
  text-decoration: none !important;
  flex-shrink: 0;
  color: var(--og-text);
}

/* Invert dark logo to white for dark theme */
.og-logo__img {
  width: 34px;
  height: 34px;
  object-fit: contain;
  filter: invert(1) brightness(1.05);
  flex-shrink: 0;
  transition: filter .2s ease;
}

.og-logo:hover .og-logo__img { filter: invert(1) brightness(1.2); }

.og-logo__name {
  font-family: var(--og-font-mono);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -.02em;
  color: var(--og-text);
  transition: color .15s;
}

.og-logo__dot { color: var(--og-accent); }
.og-logo:hover .og-logo__name { color: var(--og-accent); }

/* ── Navigation ──────────────────────────────────────────────────────────── */
.og-nav {
  flex: 1;
  display: flex;
  justify-content: flex-start;
}

.og-nav__list {
  display: flex;
  align-items: center;
  gap: .25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.og-nav__item {
  position: relative;
  list-style: none;
}

.og-nav__link {
  display: inline-flex;
  align-items: center;
  gap: .3rem;
  padding: .4rem .65rem;
  font-size: .875rem;
  font-weight: 500;
  color: var(--og-muted);
  text-decoration: none;
  border-radius: var(--og-radius);
  transition: color .15s, background .15s;
  white-space: nowrap;
}

.og-nav__link:hover,
.og-nav__link.is-active {
  color: var(--og-text);
  background: var(--og-bg3);
  text-decoration: none;
}

.og-nav__link.is-active { color: var(--og-accent); }

/* Chevron */
.og-nav__chevron {
  flex-shrink: 0;
  transition: transform .2s ease;
  opacity: .6;
}

.og-nav__item:hover > .og-nav__link .og-nav__chevron,
.og-nav__item:focus-within > .og-nav__link .og-nav__chevron {
  transform: rotate(180deg);
  opacity: 1;
}

/* ── Standard dropdown ───────────────────────────────────────────────────── */
.og-nav__item.has-children > .og-nav__sub {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  min-width: 220px;
  background: var(--og-bg2);
  border: 1px solid var(--og-border);
  border-radius: var(--og-radius-lg);
  box-shadow: 0 8px 32px rgba(0,0,0,.4);
  padding: .5rem;
  list-style: none;
  margin: 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: opacity .18s ease, transform .18s ease, visibility .18s;
  z-index: 200;
  pointer-events: none;
}

.og-nav__item.has-children:hover > .og-nav__sub,
.og-nav__item.has-children:focus-within > .og-nav__sub {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: auto;
}

.og-nav__sub .og-nav__item { width: 100%; }

.og-nav__sub .og-nav__link {
  width: 100%;
  padding: .45rem .75rem;
  font-size: .84rem;
  justify-content: flex-start;
}

/* ── MEGA MENU ───────────────────────────────────────────────────────────── */
.og-nav__item--mega {
  position: static !important; /* mega menu spans full header */
}

.og-nav__item--mega > .og-nav__sub {
  left: 50%;
  transform: translateX(-50%) translateY(-6px);
  width: min(660px, 90vw);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: .25rem;
  padding: 1rem;
  min-width: unset;
}

.og-nav__item--mega:hover > .og-nav__sub,
.og-nav__item--mega:focus-within > .og-nav__sub {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
  pointer-events: auto;
}

/* Individual mega-menu item card */
.og-nav__item--mega .og-nav__sub .og-nav__item { width: 100%; }

.og-nav__item--mega .og-nav__sub .og-nav__link {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: .7rem .85rem;
  border-radius: var(--og-radius);
  font-size: .82rem;
  line-height: 1.3;
  color: var(--og-text-soft);
  height: 100%;
  background: transparent;
  transition: background .12s, color .12s;
}

.og-nav__item--mega .og-nav__sub .og-nav__link:hover {
  background: var(--og-bg3);
  color: var(--og-text);
}

/* Mega menu item — category label (short name) + description */
.og-nav__sub .og-cat-label {
  font-weight: 600;
  font-size: .82rem;
  color: var(--og-text);
  margin-bottom: .15rem;
  line-height: 1.2;
}

.og-nav__sub .og-cat-desc {
  font-size: .72rem;
  color: var(--og-faint);
  line-height: 1.35;
}

/* Mega menu column headings */
.og-mega-col-head {
  font-size: .68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--og-faint);
  padding: .35rem .85rem .2rem;
  grid-column: 1 / -1;
  border-bottom: 1px solid var(--og-border);
  margin-bottom: .25rem;
}

/* ── Header actions ──────────────────────────────────────────────────────── */
.og-header__actions {
  display: flex;
  align-items: center;
  gap: .4rem;
  flex-shrink: 0;
  margin-left: auto;
}

.og-icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  padding: 0;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--og-radius);
  color: var(--og-muted);
  cursor: pointer;
  transition: color .15s, background .15s, border-color .15s;
}

.og-icon-btn:hover {
  color: var(--og-text);
  background: var(--og-bg3);
  border-color: var(--og-border);
}

/* ── Search bar ──────────────────────────────────────────────────────────── */
.og-search-bar {
  background: var(--og-bg2);
  border-top: 1px solid var(--og-border);
  padding: .75rem 1.5rem;
  animation: og-slide-down .18s ease;
}

.og-search-bar[hidden] { display: none; }

@keyframes og-slide-down {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.og-search-bar__inner {
  display: flex;
  align-items: center;
  gap: .75rem;
  max-width: 700px;
  margin: 0 auto;
}

.og-search-form {
  display: flex;
  flex: 1;
  position: relative;
}

.og-search-form__input {
  flex: 1;
  background: var(--og-bg3);
  border: 1px solid var(--og-border);
  color: var(--og-text);
  border-radius: var(--og-radius);
  padding: .55rem .75rem .55rem 2.6rem;
  font-size: .9rem;
  font-family: var(--og-font-sans);
  transition: border-color .15s;
  width: 100%;
}

.og-search-form__input:focus {
  border-color: var(--og-accent);
  outline: none;
  background: var(--og-bg);
}

.og-search-form__input::placeholder { color: var(--og-faint); }

.og-search-form__btn {
  position: absolute;
  left: .75rem;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--og-faint);
  padding: 0;
  cursor: pointer;
  display: flex;
  align-items: center;
}

.og-search-bar__esc {
  font-size: .7rem;
  font-family: var(--og-font-mono);
  color: var(--og-faint);
  background: var(--og-bg3);
  border: 1px solid var(--og-border);
  border-radius: 4px;
  padding: .15rem .4rem;
  white-space: nowrap;
  flex-shrink: 0;
}

/* ── Mobile overlay ──────────────────────────────────────────────────────── */
.og-mobile-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.6);
  z-index: 998;
  backdrop-filter: blur(2px);
}

.og-mobile-overlay.is-visible { display: block; }

/* ── Mobile menu toggle ──────────────────────────────────────────────────── */
.og-mobile-toggle { display: none; }

/* ════════════════════════════════════════════════════════════════════════
   HOMEPAGE SECTIONS
   ════════════════════════════════════════════════════════════════════════ */

.og-section-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 3rem 1.5rem;
}

.og-section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  gap: 1rem;
}

.og-section-title {
  font-size: .72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--og-muted);
  display: flex;
  align-items: center;
  gap: .5rem;
  margin: 0;
}

.og-section-title::before {
  content: '';
  display: inline-block;
  width: 3px;
  height: .9em;
  background: var(--og-accent);
  border-radius: 2px;
}

.og-section-link {
  font-size: .8rem;
  color: var(--og-accent);
  text-decoration: none;
  white-space: nowrap;
  transition: color .15s;
}

.og-section-link:hover { color: var(--og-accent-hover); text-decoration: none; }

/* ── Hero section ────────────────────────────────────────────────────────── */
.og-hero {
  background: linear-gradient(180deg, var(--og-bg2) 0%, var(--og-bg) 100%);
  border-bottom: 1px solid var(--og-border);
  padding: 5rem 1.5rem 4rem;
  text-align: center;
}

.og-hero__container {
  max-width: 800px;
  margin: 0 auto;
}

.og-hero__eyebrow {
  display: inline-block;
  font-family: var(--og-font-mono);
  font-size: .8rem;
  color: var(--og-accent);
  background: var(--og-accent-dim);
  padding: .35rem .875rem;
  border-radius: 99px;
  margin-bottom: 1.5rem;
  letter-spacing: .02em;
}

.og-hero__title {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 700;
  line-height: 1.2;
  color: var(--og-text);
  margin: 0 0 1rem;
  letter-spacing: -.02em;
}

.og-hero__title em {
  font-style: normal;
  color: var(--og-accent);
}

.og-hero__subtitle {
  color: var(--og-muted);
  font-size: 1.05rem;
  line-height: 1.7;
  margin: 0 auto 2rem;
  max-width: 600px;
}

.og-hero__ctas {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: .75rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

.og-btn {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .65rem 1.25rem;
  border-radius: var(--og-radius);
  font-size: .9rem;
  font-weight: 600;
  text-decoration: none;
  transition: background .15s, color .15s, transform .1s;
  cursor: pointer;
}

.og-btn:active { transform: scale(.97); }

.og-btn--primary {
  background: var(--og-accent);
  color: #0D1117;
  border: 1px solid var(--og-accent);
}

.og-btn--primary:hover {
  background: var(--og-accent-hover);
  color: #0D1117;
  border-color: var(--og-accent-hover);
  text-decoration: none;
}

.og-btn--ghost {
  background: transparent;
  color: var(--og-text);
  border: 1px solid var(--og-border2);
}

.og-btn--ghost:hover {
  background: var(--og-bg3);
  color: var(--og-text);
  border-color: var(--og-border2);
  text-decoration: none;
}

/* Quick chips strip */
.og-hero__chips {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: .4rem;
}

.og-hero__chips-label {
  font-size: .72rem;
  color: var(--og-faint);
  text-transform: uppercase;
  letter-spacing: .06em;
  font-weight: 600;
  width: 100%;
  margin-bottom: .15rem;
}

/* ── Category cards grid ─────────────────────────────────────────────────── */
.og-cats-section { background: var(--og-bg); border-bottom: 1px solid var(--og-border); }

.og-cats__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(195px, 1fr));
  gap: .875rem;
}

.og-cat-card {
  display: flex;
  flex-direction: column;
  gap: .3rem;
  padding: 1.1rem 1.25rem;
  background: var(--og-bg2);
  border: 1px solid var(--og-border);
  border-radius: var(--og-radius-lg);
  text-decoration: none;
  transition: border-color .15s ease, transform .15s ease, background .15s;
  color: inherit;
}

.og-cat-card:hover {
  border-color: var(--og-accent);
  background: var(--og-bg3);
  transform: translateY(-2px);
  text-decoration: none;
  color: inherit;
}

.og-cat-card__icon {
  font-size: 1.3rem;
  line-height: 1;
  font-family: var(--og-font-mono);
  color: var(--og-accent);
  margin-bottom: .2rem;
}

.og-cat-card__name {
  font-size: .9rem;
  font-weight: 600;
  color: var(--og-text);
  line-height: 1.3;
}

.og-cat-card__count {
  font-size: .75rem;
  color: var(--og-faint);
  font-family: var(--og-font-mono);
}

/* ── Posts grid ──────────────────────────────────────────────────────────── */
.og-posts-section { background: var(--og-bg2); border-bottom: 1px solid var(--og-border); }

.og-posts__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.og-post-card {
  background: var(--og-bg);
  border: 1px solid var(--og-border);
  border-radius: var(--og-radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: border-color .2s, transform .2s, box-shadow .2s;
}

.og-post-card:hover {
  border-color: var(--og-border2);
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0,0,0,.35);
}

.og-post-card__img-wrap {
  display: block;
  overflow: hidden;
  aspect-ratio: 16/9;
}

.og-post-card__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
  display: block;
}

.og-post-card:hover .og-post-card__img { transform: scale(1.04); }

.og-post-card__body {
  padding: 1.1rem 1.25rem 1.35rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.og-post-card__cat {
  display: inline-block;
  padding: .18rem .55rem;
  background: var(--og-accent-dim);
  color: var(--og-accent);
  font-size: .7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  border-radius: 3px;
  text-decoration: none;
  margin-bottom: .6rem;
  line-height: 1.4;
  align-self: flex-start;
}

.og-post-card__title {
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.4;
  margin: 0 0 .6rem;
}

.og-post-card__title a {
  color: var(--og-text);
  text-decoration: none;
  transition: color .15s;
}

.og-post-card__title a:hover { color: var(--og-accent); text-decoration: none; }

.og-post-card__excerpt {
  color: var(--og-muted);
  font-size: .84rem;
  line-height: 1.6;
  margin: 0 0 auto;
  padding-bottom: .875rem;
}

.og-post-card__meta {
  display: flex;
  align-items: center;
  gap: .4rem;
  color: var(--og-faint);
  font-size: .75rem;
  margin-top: .875rem;
  padding-top: .875rem;
  border-top: 1px solid var(--og-border);
}

.og-post-card__sep { opacity: .4; }

/* ── Cheatsheet showcase ─────────────────────────────────────────────────── */
.og-cs-section { background: var(--og-bg); border-bottom: 1px solid var(--og-border); }

.og-cs-showcase {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.og-cs-card {
  display: flex;
  flex-direction: column;
  background: var(--og-bg2);
  border: 1px solid var(--og-border);
  border-radius: var(--og-radius-lg);
  overflow: hidden;
  text-decoration: none;
  transition: border-color .15s, transform .15s;
}

.og-cs-card:hover {
  border-color: var(--og-border2);
  transform: translateY(-2px);
  text-decoration: none;
}

.og-cs-card__accent {
  height: 3px;
  width: 100%;
  flex-shrink: 0;
}

.og-cs-card__body {
  padding: 1.1rem 1.25rem 1.25rem;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: .25rem;
}

.og-cs-card__name {
  font-family: var(--og-font-mono);
  font-size: .95rem;
  font-weight: 600;
  color: var(--og-text);
}

.og-cs-card__desc {
  font-size: .78rem;
  color: var(--og-muted);
  line-height: 1.5;
}

.og-cs-card__cta {
  font-size: .75rem;
  color: var(--og-accent);
  margin-top: auto;
  padding-top: .875rem;
}

.og-cs-card:hover .og-cs-card__cta { color: var(--og-accent-hover); }

/* ── Footer ──────────────────────────────────────────────────────────────── */
.og-footer {
  background: var(--og-bg2);
  border-top: 1px solid var(--og-border);
  padding: 3.5rem 0 0;
}

.og-footer__grid {
  display: grid;
  grid-template-columns: 2fr 1.5fr 1.5fr 1.5fr;
  gap: 2.5rem;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem 3rem;
}

.og-footer__logo {
  display: flex;
  align-items: center;
  gap: .5rem;
  text-decoration: none;
  font-family: var(--og-font-mono);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--og-text);
  margin-bottom: .875rem;
}

.og-footer__logo:hover { color: var(--og-accent); text-decoration: none; }

.og-footer__tagline {
  font-size: .875rem;
  color: var(--og-muted);
  line-height: 1.6;
  margin: 0 0 .75rem;
}

.og-footer__mono {
  font-family: var(--og-font-mono);
  font-size: .75rem;
  color: var(--og-faint);
  background: var(--og-bg3);
  padding: .4rem .75rem;
  border-radius: var(--og-radius);
  display: inline-block;
}

.og-footer__heading {
  font-size: .72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--og-faint);
  margin: 0 0 .875rem;
}

.og-footer__links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: .4rem;
}

.og-footer__links a {
  font-size: .84rem;
  color: var(--og-muted);
  text-decoration: none;
  transition: color .15s;
  line-height: 1.4;
}

.og-footer__links a:hover { color: var(--og-accent); }

.og-footer__badge {
  margin-top: 1.5rem;
  padding: .75rem 1rem;
  background: var(--og-accent-dim);
  border: 1px solid rgba(16,185,129,.2);
  border-radius: var(--og-radius);
}

.og-footer__badge-text {
  font-size: .78rem;
  color: var(--og-accent);
  font-family: var(--og-font-mono);
  line-height: 1.5;
}

.og-footer__bottom {
  border-top: 1px solid var(--og-border);
  padding: 1rem 1.5rem;
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  font-size: .78rem;
  color: var(--og-faint);
}

.og-footer__mono {
  font-family: var(--og-font-mono);
  font-size: .72rem;
  color: var(--og-faint);
}

/* ── Empty state ─────────────────────────────────────────────────────────── */
.og-empty {
  color: var(--og-muted);
  font-size: .9rem;
  padding: 2rem 0;
  text-align: center;
}

/* ════════════════════════════════════════════════════════════════════════
   RESPONSIVE
   ════════════════════════════════════════════════════════════════════════ */
@media (max-width: 1100px) {
  .og-posts__grid  { grid-template-columns: repeat(2, 1fr); }
  .og-cs-showcase  { grid-template-columns: repeat(3, 1fr); }
  .og-footer__grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 900px) {
  .og-cs-showcase { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  /* Show mobile toggle, hide desktop nav */
  .og-mobile-toggle { display: inline-flex; }
  .og-nav { display: none; position: fixed; top: 60px; left: 0; right: 0; bottom: 0; background: var(--og-bg2); border-top: 1px solid var(--og-border); overflow-y: auto; z-index: 999; padding: 1rem; flex-direction: column; }
  .og-nav.is-open { display: flex; }

  .og-nav__list { flex-direction: column; gap: 0; width: 100%; }
  .og-nav__item { width: 100%; }
  .og-nav__link { width: 100%; padding: .65rem .875rem; font-size: .95rem; }

  /* Mobile dropdown */
  .og-nav__item.has-children > .og-nav__sub {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: none;
    border-radius: 0;
    background: var(--og-bg3);
    margin: 0 -.5rem;
    padding: .25rem .75rem;
    pointer-events: auto;
    display: none;
    width: 100%;
  }
  .og-nav__item.has-children.is-open > .og-nav__sub { display: block; }

  /* Mega menu on mobile: single column */
  .og-nav__item--mega > .og-nav__sub {
    grid-template-columns: 1fr;
    width: 100%;
    left: 0;
    transform: none;
  }

  .og-posts__grid { grid-template-columns: 1fr; }
  .og-cs-showcase { grid-template-columns: repeat(2, 1fr); }
  .og-footer__grid { grid-template-columns: 1fr; gap: 1.5rem; }
  .og-hero { padding: 3rem 1rem 2.5rem; }
  .og-section-container { padding: 2.25rem 1rem; }
}

@media (max-width: 480px) {
  .og-header__inner { height: 56px; padding: 0 1rem; }
  .og-cats__grid { grid-template-columns: repeat(2, 1fr); }
  .og-cs-showcase { grid-template-columns: 1fr; }
  .og-hero__ctas { flex-direction: column; align-items: stretch; }
  .og-btn { justify-content: center; }
}