/* ==========================================================================
   BAUDHYANTRAM SANSKRITI GURUKUL
   navbar.css — Mega Menu & Dropdown Navigation
   Extends (does not override) style.css base navbar rules.
   ========================================================================== */

/* ─── Brand / Logo ──────────────────────────────────────────────────────── */

.bsg-brand { display: flex; align-items: center; text-decoration: none; padding: 0; }

.bsg-logo-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 3px 6px;
  line-height: 0;
}

.bsg-logo-img {
  display: block;
  height: 62px;
  width: auto;
  object-fit: contain;
}

@media (max-width: 991px) {
  .bsg-logo-img {
    height: 52px;
  }
}

/* Footer logo (dark background — no wrapper needed) */
.bsg-footer-logo {
  display: block;
  height: 72px;
  width: auto;
  object-fit: contain;
  margin-bottom: .5rem;
}

/* ─── Nav trigger buttons (items with sub-menus) ────────────────────────── */

.bsg-nav-trigger {
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: .32rem;
  white-space: nowrap;
}

.bsg-nav-caret {
  font-size: .6rem;
  opacity: .6;
  transition: transform .22s ease, opacity .22s ease;
  flex-shrink: 0;
  margin-top: 1px;
}

/* ─── Desktop: shared dropdown / mega positioning basis ─────────────────── */

@media (min-width: 992px) {

  /* The header (position:sticky) is the containing block for absolute panels */
  .bsg-has-mega,
  .bsg-has-dropdown { position: static; }

  /* Rotate caret on hover */
  .bsg-has-mega:hover .bsg-nav-caret,
  .bsg-has-dropdown:hover .bsg-nav-caret,
  .bsg-has-mega.is-open .bsg-nav-caret,
  .bsg-has-dropdown.is-open .bsg-nav-caret { opacity: 1; transform: rotate(180deg); }

  /* Highlight trigger when panel open */
  .bsg-has-mega:hover .bsg-nav-trigger,
  .bsg-has-dropdown:hover .bsg-nav-trigger { color: var(--saffron) !important; }

}

/* ─── Simple Dropdown Panel ─────────────────────────────────────────────── */

.bsg-dropdown-panel {
  position: absolute;
  top: calc(100% + 4px);
  min-width: 230px;
  background: var(--navy);
  border: 1px solid rgba(255, 255, 255, .07);
  border-top: 2px solid var(--saffron);
  border-radius: 0 0 12px 12px;
  box-shadow: 0 18px 50px rgba(0, 0, 0, .38);
  padding: .6rem 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: opacity .2s ease, transform .2s ease, visibility .2s ease;
  z-index: 1060;
  /* center under trigger */
  left: 50%;
  transform: translateX(-50%) translateY(-6px);
}

@media (min-width: 992px) {
  .bsg-has-dropdown:hover .bsg-dropdown-panel,
  .bsg-has-dropdown:focus-within .bsg-dropdown-panel,
  .bsg-has-dropdown.is-open .bsg-dropdown-panel {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
  }
}

.bsg-dropdown-item {
  display: flex;
  align-items: center;
  gap: .65rem;
  padding: .52rem 1.2rem;
  color: rgba(255, 255, 255, .78);
  font-size: .845rem;
  font-weight: 450;
  text-decoration: none;
  transition: color .14s, background .14s, padding-left .14s;
  white-space: nowrap;
  letter-spacing: .01em;
}

.bsg-dropdown-item i {
  font-size: .8rem;
  opacity: .6;
  width: 1rem;
  flex-shrink: 0;
}

.bsg-dropdown-item:hover {
  color: var(--saffron);
  background: rgba(255, 255, 255, .05);
  padding-left: 1.45rem;
}

.bsg-dropdown-divider {
  height: 1px;
  background: rgba(255, 255, 255, .08);
  margin: .4rem 1.2rem;
}

/* ─── Mega Menu Panel ───────────────────────────────────────────────────── */

.bsg-mega-panel {
  /* Positioned relative to .bsg-header (position:sticky = containing block) */
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  width: 100%;
  background: var(--navy);
  border-top: 2px solid var(--saffron);
  border-bottom: 1px solid rgba(255, 255, 255, .06);
  box-shadow: 0 22px 64px rgba(0, 0, 0, .42);
  padding: 2.4rem 0 2.2rem;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: opacity .24s ease, transform .24s ease, visibility .24s;
  z-index: 1050;
}

@media (min-width: 992px) {
  .bsg-has-mega:hover .bsg-mega-panel,
  .bsg-has-mega:focus-within .bsg-mega-panel,
  .bsg-has-mega.is-open .bsg-mega-panel {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }
}

/* Eyebrow label */
.bsg-mega-eyebrow {
  font-size: .62rem;
  font-weight: 800;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--saffron);
  margin-bottom: 1.5rem;
}

/* Column heading */
.bsg-mega-col-title {
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, .32);
  padding-bottom: .6rem;
  border-bottom: 1px solid rgba(255, 255, 255, .07);
  margin-bottom: .8rem;
}

/* ── Mega page links (About BSG) ──────────────────────────────────────── */

.bsg-mega-link {
  display: flex;
  align-items: flex-start;
  gap: .9rem;
  padding: .7rem .8rem;
  border-radius: 10px;
  text-decoration: none;
  transition: background .15s, transform .15s;
  margin-bottom: .15rem;
}

.bsg-mega-link:hover { background: rgba(255, 255, 255, .06); transform: translateX(3px); }

.bsg-mega-link-icon {
  width: 38px;
  height: 38px;
  border-radius: 9px;
  background: rgba(212, 98, 26, .14);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1rem;
  color: var(--saffron);
  margin-top: 1px;
}

.bsg-mega-link-body { min-width: 0; }

.bsg-mega-link-title {
  font-size: .88rem;
  font-weight: 620;
  color: #fff;
  line-height: 1.3;
  display: block;
  margin-bottom: .2rem;
  letter-spacing: .01em;
}

.bsg-mega-link-desc {
  font-size: .775rem;
  color: rgba(255, 255, 255, .45);
  line-height: 1.45;
  display: block;
}

/* ── Knowledge category tiles (Explore) ──────────────────────────────── */

.bsg-mega-cat {
  display: flex;
  align-items: center;
  gap: .6rem;
  padding: .52rem .8rem;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, .07);
  background: rgba(255, 255, 255, .03);
  text-decoration: none;
  color: rgba(255, 255, 255, .8);
  font-size: .845rem;
  font-weight: 500;
  transition: border-color .15s, background .15s, color .15s, transform .15s;
  margin-bottom: .4rem;
  letter-spacing: .01em;
}

.bsg-mega-cat i { font-size: .88rem; opacity: .65; flex-shrink: 0; }

.bsg-mega-cat:hover {
  border-color: var(--saffron);
  background: rgba(212, 98, 26, .1);
  color: var(--saffron);
  transform: translateX(2px);
}

.bsg-mega-cat:hover i { opacity: 1; }

/* View all link */
.bsg-mega-view-all {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  margin-top: 1.1rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(255, 255, 255, .07);
  font-size: .83rem;
  font-weight: 650;
  color: var(--saffron);
  text-decoration: none;
  letter-spacing: .02em;
  transition: gap .15s;
  width: 100%;
}

.bsg-mega-view-all:hover { gap: .7rem; color: var(--saffron-lt); }

/* Wisdom sidebar panel */
.bsg-mega-wisdom {
  padding: 1.2rem 1.4rem;
  background: rgba(212, 98, 26, .07);
  border: 1px solid rgba(212, 98, 26, .18);
  border-radius: 12px;
}

.bsg-mega-wisdom-eyebrow {
  font-size: .62rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--saffron);
  margin-bottom: .65rem;
}

.bsg-mega-wisdom-text {
  font-size: .88rem;
  color: rgba(255, 255, 255, .78);
  line-height: 1.65;
  font-family: 'Noto Serif', Georgia, serif;
  margin-bottom: .8rem;
}

.bsg-mega-wisdom-link {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  font-size: .78rem;
  font-weight: 600;
  color: var(--saffron);
  text-decoration: none;
  transition: gap .15s;
}

.bsg-mega-wisdom-link:hover { gap: .6rem; color: var(--saffron-lt); }

/* Vertical divider inside mega */
.bsg-mega-vdivider {
  width: 1px;
  background: rgba(255, 255, 255, .07);
  align-self: stretch;
  margin: 0 .5rem;
}

/* ─── Join CTA button in nav ────────────────────────────────────────────── */

.bsg-nav-join {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .46rem 1.1rem;
  background: var(--saffron);
  color: #fff !important;
  border-radius: 8px;
  font-size: .84rem;
  font-weight: 650;
  text-decoration: none;
  letter-spacing: .02em;
  transition: background .16s, transform .16s, box-shadow .16s;
  white-space: nowrap;
  border: none;
  cursor: pointer;
}

.bsg-nav-join:hover {
  background: var(--saffron-lt);
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(212, 98, 26, .35);
}

/* ─── Mobile styles (≤ 991px) ───────────────────────────────────────────── */

@media (max-width: 991px) {

  /* Reset absolute/fixed to static within collapsed nav */
  .bsg-mega-panel,
  .bsg-dropdown-panel {
    position: static;
    transform: none !important;
    opacity: 1 !important;
    visibility: visible !important;
    box-shadow: none;
    border: none;
    border-left: 2px solid rgba(212, 98, 26, .5);
    background: rgba(255, 255, 255, .03);
    padding: .4rem 0 .6rem .75rem;
    margin: .2rem 0 .5rem;
    border-radius: 0;
    width: 100%;
    /* Hidden by default on mobile, toggled via JS */
    display: none;
  }

  .bsg-mega-panel.mob-open,
  .bsg-dropdown-panel.mob-open { display: block; }

  .bsg-mega-link-icon { display: none; }
  .bsg-mega-link { padding: .35rem .4rem; margin-bottom: .05rem; }
  .bsg-mega-link:hover { transform: none; }
  .bsg-mega-link-title { font-size: .84rem; }
  .bsg-mega-link-desc { display: none; }

  .bsg-mega-col-title { margin-top: .6rem; margin-bottom: .4rem; font-size: .63rem; }
  .bsg-mega-eyebrow { display: none; }
  .bsg-mega-view-all { margin-top: .6rem; padding-top: .6rem; font-size: .8rem; }
  .bsg-mega-vdivider { display: none; }
  .bsg-mega-wisdom { display: none; }

  .bsg-mega-cat { padding: .38rem .5rem; font-size: .82rem; margin-bottom: .28rem; }

  .bsg-dropdown-item { padding: .42rem .65rem; font-size: .84rem; }
  .bsg-dropdown-item:hover { padding-left: .85rem; }
  .bsg-dropdown-divider { margin: .35rem .65rem; }

  /* Mobile trigger: caret always visible, rotates when open */
  .bsg-nav-caret { opacity: .7; }
  .bsg-has-mega.is-open .bsg-nav-caret,
  .bsg-has-dropdown.is-open .bsg-nav-caret { transform: rotate(180deg); opacity: 1; }

  /* Nav join button full width on mobile */
  .bsg-nav-join { width: 100%; justify-content: center; margin-top: .5rem; }

  /* Collapse the mega grid on mobile */
  .bsg-mega-panel .row { display: block; }
  .bsg-mega-panel .col-lg-9,
  .bsg-mega-panel .col-lg-3 { width: 100%; padding: 0; }
  .bsg-mega-panel .row.g-2 > * { padding: 0; }
  .bsg-mega-panel .col-6 { width: 100%; }
}

/* ─── Active states (current page) ──────────────────────────────────────── */

.bsg-nav-link.bsg-nav-link--active,
.nav-item.active > .bsg-nav-link {
  color: var(--saffron) !important;
}

.bsg-mega-link--active .bsg-mega-link-title {
  color: var(--saffron) !important;
}

.bsg-mega-link--active .bsg-mega-link-icon {
  background: rgba(212, 98, 26, .22);
}

.bsg-dropdown-item--active {
  color: var(--saffron) !important;
  background: rgba(212, 98, 26, .08);
}

.bsg-dropdown-item--active i { opacity: 1; }

/* ─── Accessibility: keyboard focus ─────────────────────────────────────── */

.bsg-nav-trigger:focus-visible {
  outline: 2px solid var(--saffron);
  outline-offset: 3px;
  border-radius: 4px;
}