/* ==========================================================================
   Digivolve Accountants - nav.css
   Header, desktop mega menu, mobile drawer
   ========================================================================== */

.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  transition: background 0.4s var(--ease), border-color 0.4s var(--ease),
              box-shadow 0.4s var(--ease), transform 0.45s var(--ease);
  border-bottom: 1px solid transparent;
}
.site-header__inner {
  display: flex; align-items: center; justify-content: space-between; gap: 1.5rem;
  height: 80px;
  max-width: none; margin-inline: 0; padding-inline: var(--edge);
}

/* Transparent over the dark hero; stays dark (not light) once scrolled so the
   white logo never disappears. Slides up out of view on scroll down. */
.site-header { color: var(--on-ink); }
.site-header.is-scrolled {
  background: var(--ink);
  border-bottom-color: var(--on-ink-line);
  box-shadow: 0 10px 34px rgba(7, 24, 42, 0.45);
}
.site-header.is-hidden { transform: translateY(-100%); }

/* ------------------------------------------------------------------ Logo */
.brand { display: inline-flex; align-items: center; gap: 0.6rem; flex: none; }
.brand__logo { height: 40px; width: auto; display: block; }
.brand__mark { width: 30px; height: 34px; color: var(--gold); }
.brand__name { font-family: var(--serif); font-size: 1.5rem; font-weight: 460; letter-spacing: -0.01em; line-height: 1; color: currentColor; }
.brand__name b { font-weight: 460; }

/* ------------------------------------------------------------------ Desktop nav */
.nav { display: flex; align-items: center; gap: 0.35rem; }
.nav__item { position: relative; }
.nav__link {
  display: inline-flex; align-items: center; gap: 0.35rem;
  padding: 0.7rem 0.95rem; font-size: 0.95rem; font-weight: 600; color: currentColor;
  border-radius: var(--radius);
}
.nav__link svg { width: 0.7em; height: 0.7em; transition: transform 0.3s var(--ease); opacity: 0.6; }
.nav__item:hover .nav__link svg, .nav__item:focus-within .nav__link svg { transform: rotate(180deg); }
.nav__link:hover { color: var(--blue); }

.header-actions { display: flex; align-items: center; gap: 1.65rem; flex: none; }
/* Client login link */
.header-login {
  display: inline-flex; align-items: center; gap: 0.45rem;
  font-size: 0.9rem; font-weight: 600; color: currentColor;
  transition: color 0.25s var(--ease);
}
.header-login svg { width: 17px; height: 17px; opacity: 0.85; }
.header-login:hover { color: var(--blue); }
/* Slimmer, more refined header CTA */
.header-actions .btn { padding: 0.62rem 1.3rem; font-size: 0.9rem; line-height: 1.2; border-radius: 6px; }

/* ------------------------------------------------------------------ Dropdowns */
.dropdown, .mega {
  position: absolute; top: calc(100% + 0.4rem); left: 0;
  background: var(--paper-2); color: var(--charcoal);
  border: 1px solid var(--line); border-radius: 8px;
  box-shadow: 0 24px 60px rgba(12, 42, 49, 0.14);
  padding: 0.9rem; opacity: 0; visibility: hidden; transform: translateY(8px);
  transition: opacity 0.28s var(--ease), transform 0.28s var(--ease), visibility 0.28s;
}
.nav__item:hover > .dropdown, .nav__item:focus-within > .dropdown,
.nav__item:hover > .mega, .nav__item:focus-within > .mega { opacity: 1; visibility: visible; transform: translateY(0); }

.dropdown { min-width: 240px; }
.dropdown a {
  display: block; padding: 0.6rem 0.8rem; border-radius: var(--radius);
  font-size: 0.92rem; font-weight: 500; color: var(--charcoal);
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
}
.dropdown a:hover { background: var(--paper); color: var(--ink); }
.dropdown a.dropdown__all {
  display: flex; align-items: center; gap: 0.4rem; white-space: nowrap;
  margin-top: 0.35rem; border-top: 1px solid var(--line);
  color: var(--blue-deep); font-weight: 600;
}
.dropdown__all svg { width: 15px; height: 11px; flex: none; transition: transform 0.25s var(--ease); }
.dropdown__all:hover svg { transform: translateX(3px); }

/* Mega menu */
.mega { left: 50%; transform: translate(-50%, 8px); width: min(880px, calc(100vw - 3rem)); padding: 1.6rem; }
.nav__item:hover > .mega, .nav__item:focus-within > .mega { transform: translate(-50%, 0); }
.mega__grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.4rem 1.8rem; }
.mega__col h4 {
  font-family: var(--sans); font-size: 0.74rem; font-weight: 700; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--gold-deep); margin-bottom: 0.7rem;
}
.mega__col a {
  display: block; padding: 0.32rem 0; font-size: 0.92rem; font-weight: 500; color: var(--slate);
  transition: color 0.2s var(--ease);
}
.mega__col a:hover { color: var(--ink); }
.mega__foot {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  margin-top: 1.4rem; padding-top: 1.2rem; border-top: 1px solid var(--line);
  font-size: 0.88rem; color: var(--slate);
}

/* ------------------------------------------------------------------ Burger (open only; drawer has its own close) */
.burger { display: none; width: 44px; height: 44px; flex-direction: column; justify-content: center; align-items: center; gap: 5px; }
.burger span { width: 24px; height: 2px; border-radius: 2px; background: currentColor; transition: opacity 0.3s var(--ease); }

/* ------------------------------------------------------------------ Mobile drawer */
.mobile-nav {
  position: fixed; inset: 0; z-index: 110;
  background: var(--ink); color: var(--on-ink);
  display: flex; flex-direction: column;
  transform: translateX(100%); transition: transform 0.45s var(--ease);
  visibility: hidden;
}
.nav-open .mobile-nav { transform: translateX(0); visibility: visible; }

/* Top bar: logo + clean close */
.mobile-nav__bar {
  flex: none; display: flex; align-items: center; justify-content: space-between;
  height: 80px; padding-inline: var(--gutter);
  border-bottom: 1px solid var(--on-ink-line);
}
.mobile-nav__close {
  width: 46px; height: 46px; margin-right: -10px; flex: none;
  display: grid; place-items: center; color: var(--on-ink); border-radius: 50%;
  transition: background 0.25s var(--ease), color 0.25s var(--ease);
}
.mobile-nav__close svg { width: 22px; height: 22px; }
.mobile-nav__close:hover { background: rgba(236, 242, 246, 0.08); color: var(--blue); }

/* Nav list */
.mobile-nav__list { flex: 1 1 auto; overflow-y: auto; padding: 0.75rem var(--gutter) 1.5rem; }
.mobile-nav__link, .mobile-nav__top {
  display: flex; align-items: center; justify-content: space-between; width: 100%; text-align: left;
  padding: 1.05rem 0; font-family: var(--serif); font-size: 1.5rem; font-weight: 500;
  color: var(--on-ink); border-bottom: 1px solid var(--on-ink-line);
  transition: color 0.25s var(--ease);
}
.mobile-nav__link:hover, .mobile-nav__top:hover { color: var(--blue); }
.mobile-nav__top svg { width: 0.8rem; height: 0.8rem; color: var(--blue); transition: transform 0.3s var(--ease); }
.mobile-nav__group.is-open .mobile-nav__top svg { transform: rotate(180deg); }
.mobile-nav__panel { max-height: 0; overflow: hidden; transition: max-height 0.4s var(--ease); }
.mobile-nav__group.is-open .mobile-nav__panel { max-height: 460px; }
.mobile-nav__panel a {
  display: block; padding: 0.5rem 0 0.5rem 1.1rem; margin-left: 0.1rem;
  font-family: var(--sans); font-size: 1rem; color: var(--on-ink-mute);
  border-left: 1px solid var(--on-ink-line); transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}
.mobile-nav__panel a:first-child { margin-top: 0.4rem; }
.mobile-nav__panel a:last-child { margin-bottom: 1.1rem; }
.mobile-nav__panel a:hover { color: var(--blue); border-color: var(--blue); }
/* View all link inside an accordion panel */
.mobile-nav__panel a.mobile-nav__all {
  display: inline-flex; align-items: center; gap: 0.4rem;
  margin-top: 0.3rem; color: var(--blue); font-weight: 600; border-left-color: var(--blue);
}
.mobile-nav__all svg { width: 15px; height: 11px; flex: none; }

/* Foot: one primary action + a compact quick-action row */
.mobile-nav__foot {
  flex: none; display: grid; gap: 0.9rem;
  padding: 1.2rem var(--gutter) calc(1.35rem + env(safe-area-inset-bottom, 0px));
  border-top: 1px solid var(--on-ink-line);
}
.mobile-nav__foot .btn { width: 100%; padding-block: 0.85rem; }
.mobile-nav__quick { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.6rem; }
.mobile-nav__quick a {
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 0.4rem;
  padding: 0.75rem 0.4rem; border: 1px solid var(--on-ink-line); border-radius: 8px;
  font-size: 0.78rem; font-weight: 600; color: var(--on-ink-mute);
  transition: border-color 0.25s var(--ease), color 0.25s var(--ease);
}
.mobile-nav__quick a:hover { border-color: var(--blue); color: var(--blue); }
.mobile-nav__quick svg { width: 20px; height: 20px; color: var(--blue); }

@media (max-width: 980px) {
  .nav, .header-actions { display: none; }
  .burger { display: flex; }
  body.nav-open { overflow: hidden; }
}