/* ═══════════════════════════════════════════════════════
   NordDelta Academy — Shared Premium Navigation
   Used by all inner pages. Homepage uses main.css nav.
   ═══════════════════════════════════════════════════════ */

/* ── Base ─────────────────────────────────────────────── */
.snav *,
.snav *::before,
.snav *::after { box-sizing: border-box; margin: 0; padding: 0; }

.snav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: 68px;
  transition: background 0.3s ease, box-shadow 0.3s ease;
}

.snav--scrolled {
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  box-shadow: 0 1px 0 var(--clr-border), var(--shadow-sm);
}

.snav__wrap {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.75rem;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 0;
}

/* ── Logo ─────────────────────────────────────────────── */
.snav__logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  text-decoration: none !important;
  margin-right: auto;
}

.snav__logo img {
  height: 80px;
  width: auto;
  padding: 10px;
  display: block;
  object-fit: contain;
}

/* ── Desktop nav links ────────────────────────────────── */
.snav__desktop {
  display: flex;
  align-items: center;
  gap: 0.15rem;
}

.snav__link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 0.5rem 0.9rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--clr-text-muted);
  border-radius: 8px;
  transition: color 0.15s, background 0.15s;
  text-decoration: none !important;
  border: none;
  background: none;
  cursor: pointer;
  font-family: inherit;
  white-space: nowrap;
  letter-spacing: 0.01em;
}

.snav__link:hover,
.snav__item--mega:hover > .snav__link {
  color: var(--clr-text);
  background: rgba(20,24,32,0.05);
}

.snav__link svg {
  transition: transform 0.25s;
  opacity: 0.6;
  flex-shrink: 0;
}

.snav__item--mega:hover > .snav__link svg {
  transform: rotate(180deg);
  opacity: 1;
}

/* ── Mega dropdown ────────────────────────────────────── */
.snav__item--mega {
  position: relative;
}

.snav__mega {
  /* top:100% + padding-top (instead of a `top: calc(100% + Npx)` gap) keeps
     the hoverable hit-box contiguous with the trigger — a real gap here
     means the pointer crosses dead space (no element under it) while
     moving from the nav item down into the panel, which drops :hover
     mid-transit and slams the menu shut before a course link can be
     clicked. Confirmed via a real cursor trace, not just code review. */
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(6px);
  width: 700px;
  background: var(--clr-surface);
  background-clip: padding-box;
  border: 1px solid var(--clr-border-hi);
  border-radius: 18px;
  padding: calc(1.5rem + 14px) 1.5rem 1.5rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
  box-shadow: var(--shadow-xl);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
}

/* Arrow tip */
.snav__mega::before {
  content: '';
  position: absolute;
  top: 7px;
  left: 50%;
  transform: translateX(-50%) rotate(45deg);
  width: 13px;
  height: 13px;
  background: var(--clr-surface);
  border-left: 1px solid var(--clr-border-hi);
  border-top: 1px solid var(--clr-border-hi);
}

.snav__item--mega:hover .snav__mega {
  opacity: 1;
  pointer-events: all;
  transform: translateX(-50%) translateY(0);
}

.snav__mega-inner {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.25rem;
  margin-bottom: 1rem;
}

.snav__mega-col {
  display: flex;
  flex-direction: column;
}

.snav__mega-label {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--clr-text-dim);
  padding: 0.5rem 0.75rem 0.4rem;
}

.snav__mega-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.45rem 0.75rem;
  border-radius: 8px;
  color: var(--clr-text-muted);
  font-size: 0.82rem;
  font-weight: 500;
  transition: background 0.15s, color 0.15s;
  text-decoration: none !important;
}

.snav__mega-item:hover {
  background: rgba(20,24,32,0.05);
  color: var(--clr-text);
}

.snav__mega-icon {
  width: 28px;
  height: 28px;
  border-radius: 7px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  flex-shrink: 0;
  border: 1px solid var(--clr-border);
  line-height: 1;
}

.snav__mega-footer {
  border-top: 1px solid var(--clr-border);
  padding-top: 0.875rem;
  text-align: center;
}

.snav__mega-all {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.825rem;
  font-weight: 600;
  color: var(--clr-accent);
  text-decoration: none !important;
  transition: gap 0.15s;
}

.snav__mega-all:hover { gap: 0.6rem; }

/* ── Actions ──────────────────────────────────────────── */
.snav__actions {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-left: 1.5rem;
  flex-shrink: 0;
}

.snav__signin {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--clr-text-muted);
  text-decoration: none !important;
  padding: 0.5rem 0.875rem;
  border-radius: 8px;
  transition: color 0.15s, background 0.15s;
  white-space: nowrap;
}

.snav__signin:hover {
  color: var(--clr-text);
  background: rgba(20,24,32,0.05);
}

.snav__cta {
  display: inline-flex;
  align-items: center;
  padding: 0.525rem 1.125rem;
  background: var(--clr-accent);
  color: var(--clr-ink) !important;
  border-radius: 9px;
  font-size: 0.875rem;
  font-weight: 700;
  text-decoration: none !important;
  transition: background 0.15s, box-shadow 0.2s, transform 0.1s;
  white-space: nowrap;
  letter-spacing: 0.01em;
}

.snav__cta:hover {
  background: var(--clr-accent-dark);
  box-shadow: var(--glow-accent);
  transform: translateY(-1px);
}

.snav__cta:active { transform: translateY(0); }

/* ── Hamburger ────────────────────────────────────────── */
.snav__burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 8px;
  background: rgba(20,24,32,0.04);
  border: 1px solid var(--clr-border-hi);
  border-radius: 9px;
  cursor: pointer;
  transition: background 0.15s;
  flex-shrink: 0;
}

.snav__burger:hover { background: rgba(20,24,32,0.08); }

.snav__burger span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--clr-text);
  border-radius: 1px;
  transition: transform 0.25s cubic-bezier(0.16,1,0.3,1), opacity 0.2s;
  margin: 0 auto;
}

.snav__burger--open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.snav__burger--open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.snav__burger--open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Mobile drawer ────────────────────────────────────── */
.snav__drawer {
  display: none;
  position: fixed;
  inset: 68px 0 0 0;
  background: rgba(255,255,255,0.98);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  z-index: 999;
  overflow-y: auto;
  transform: translateX(100%);
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  -webkit-overflow-scrolling: touch;
}

.snav__drawer--open {
  transform: translateX(0);
}

.snav__drawer-inner {
  padding: 1.25rem 1.25rem 3rem;
  display: flex;
  flex-direction: column;
  gap: 0;
  min-height: 100%;
}

.snav__drawer-section {
  display: flex;
  flex-direction: column;
  padding: 0.5rem 0 1rem;
  border-bottom: 1px solid var(--clr-border);
  margin-bottom: 0.5rem;
}

.snav__drawer-section:last-of-type {
  border-bottom: none;
}

.snav__drawer-label {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--clr-text-dim);
  padding: 0.4rem 0.5rem 0.6rem;
}

.snav__drawer-section a {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.7rem 0.5rem;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--clr-text-muted);
  text-decoration: none !important;
  transition: color 0.15s, background 0.15s;
  border-radius: 8px;
}

.snav__drawer-section a:hover {
  color: var(--clr-text);
  background: rgba(20,24,32,0.04);
}

.snav__drawer-all {
  margin-top: 0.25rem;
  font-size: 0.85rem !important;
  font-weight: 600 !important;
  color: var(--clr-accent) !important;
}

.snav__drawer-ctas {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: auto;
  padding-top: 1.5rem;
}

.snav__drawer-signin {
  display: block;
  padding: 0.9rem;
  border: 1.5px solid var(--clr-border-hi);
  border-radius: 11px;
  color: var(--clr-text) !important;
  font-size: 0.95rem;
  font-weight: 600;
  text-align: center;
  text-decoration: none !important;
  transition: border-color 0.15s, background 0.15s;
}

.snav__drawer-signin:hover {
  border-color: var(--clr-accent);
  background: var(--clr-accent-glow);
}

.snav__drawer-start {
  display: block;
  padding: 0.9rem;
  background: var(--clr-accent);
  border-radius: 11px;
  color: var(--clr-ink) !important;
  font-size: 0.95rem;
  font-weight: 700;
  text-align: center;
  text-decoration: none !important;
  transition: background 0.15s, box-shadow 0.2s;
}

.snav__drawer-start:hover {
  background: var(--clr-accent-dark);
  box-shadow: var(--glow-accent);
}

/* ── Content spacer ───────────────────────────────────── */
.snav-spacer { height: 68px; }

/* ── Responsive breakpoints ───────────────────────────── */
@media (max-width: 960px) {
  .snav__mega { width: 560px; }
  .snav__mega-inner { grid-template-columns: 1fr 1fr; }
  .snav__signin { display: none; }
}

@media (max-width: 820px) {
  .snav { height: 60px; }
  .snav-spacer { height: 60px; }
  .snav__drawer { inset: 60px 0 0 0; display: block; }
  .snav__desktop { display: none; }
  .snav__signin { display: none; }
  .snav__cta { display: none; }
  .snav__burger { display: flex; }
  .snav__logo img { height: 38px; }
}

@media (max-width: 480px) {
  .snav__wrap { padding: 0 1rem; }
  .snav__logo img { height: 34px; }
}