/* ============================================================
   NAVIGATION STYLES – InPro Academy
   ============================================================ */

/* ── Site Header ─────────────────────────────────────────── */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-header);
  height: var(--header-height);
  background: var(--surface-nav);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
  transition: all var(--transition-normal);
}

.site-header.scrolled {
  border-bottom-color: var(--surface-border);
  box-shadow: 0 4px 30px rgba(0,0,0,0.08);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: 0 var(--sp-6);
  height: 100%;
  gap: var(--sp-4);
}

/* ── Logo ────────────────────────────────────────────────── */
.nav-logo {
  flex-shrink: 0;
  display: flex;
  align-items: center;
}

.logo-img {
  height: 48px;
  width: auto;
  object-fit: contain;
  transition: transform var(--transition-fast);
}
.nav-logo:hover .logo-img {
  transform: scale(1.03);
}

/* ── Nav Menu ────────────────────────────────────────────── */
.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--sp-1);
  flex: 1;
  justify-content: center;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-item {
  list-style: none;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0.5rem 0.875rem;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: var(--fw-medium);
  color: var(--surface-text-2);
  transition: all var(--transition-fast);
  white-space: nowrap;
  position: relative;
  text-decoration: none;
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-primary);
  background: rgba(10,36,99,0.06);
}
[data-theme="dark"] .nav-link:hover,
[data-theme="dark"] .nav-link.active {
  color: var(--color-cyan);
  background: rgba(0,217,255,0.08);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background: var(--color-primary);
  border-radius: var(--radius-full);
}
[data-theme="dark"] .nav-link.active::after {
  background: var(--color-cyan);
}

.nav-link-drop i {
  font-size: 0.65rem;
  transition: transform var(--transition-fast);
}
.nav-dropdown:hover .nav-link-drop i {
  transform: rotate(180deg);
}

/* ── Dropdown Panel ──────────────────────────────────────── */
.nav-dropdown {
  position: relative;
}

.dropdown-panel {
  position: absolute;
  top: calc(100% + 12px);
  left: 50%;
  width: 480px;
  background: var(--surface-card);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  padding: var(--sp-5);
  opacity: 0;
  pointer-events: none;
  transform: translateX(-50%) translateY(-10px);
  transition: all var(--transition-normal);
  z-index: var(--z-dropdown);
}

.nav-dropdown:hover .dropdown-panel {
  opacity: 1;
  pointer-events: all;
  transform: translateX(-50%) translateY(0);
}

.dropdown-panel-wide {
  width: 560px;
}

.dropdown-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--sp-2);
  margin-bottom: var(--sp-4);
}
.dropdown-grid-4 {
  grid-template-columns: repeat(2, 1fr);
}

.drop-item {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-3) var(--sp-4);
  border-radius: var(--radius-md);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--surface-text-2);
  transition: all var(--transition-fast);
  text-decoration: none;
}

.drop-item i {
  width: 20px;
  text-align: center;
  color: var(--color-primary);
  font-size: 0.9rem;
  flex-shrink: 0;
}
[data-theme="dark"] .drop-item i {
  color: var(--color-cyan);
}

.drop-item:hover {
  background: var(--surface-bg-2);
  color: var(--surface-text);
}

.drop-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  padding: var(--sp-3) var(--sp-5);
  background: var(--grad-primary);
  color: #fff;
  border-radius: var(--radius-lg);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  transition: all var(--transition-fast);
  text-decoration: none;
}
[data-theme="dark"] .drop-cta {
  background: linear-gradient(135deg, var(--color-cyan), var(--color-primary-light));
  color: var(--color-dark);
}
.drop-cta:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

/* ── Nav Actions ─────────────────────────────────────────── */
.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  flex-shrink: 0;
}

/* ── Theme Toggle ────────────────────────────────────────── */
.theme-toggle {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: var(--surface-text-2);
  background: var(--surface-bg-2);
  border: 1px solid var(--surface-border);
  transition: all var(--transition-fast);
  cursor: pointer;
}
.theme-toggle:hover {
  background: var(--surface-bg-3);
  color: var(--color-primary);
  border-color: var(--color-primary);
}
[data-theme="dark"] .theme-toggle:hover {
  color: var(--color-cyan);
  border-color: var(--color-cyan);
}

/* ── Hamburger Toggle ────────────────────────────────────── */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 8px;
  border-radius: var(--radius-md);
  background: var(--surface-bg-2);
  border: 1px solid var(--surface-border);
  cursor: pointer;
  flex-shrink: 0;
}
.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--surface-text);
  border-radius: var(--radius-full);
  transition: all var(--transition-normal);
}
.nav-toggle.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle.open span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.nav-toggle.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ── Mobile Overlay backdrop ──────────────────────────────── */
.nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  /* Background blur for content behind menu */
  background: rgba(0,0,0,0.35);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  /* Sits below the header (300) and nav-menu (299) but above page */
  z-index: calc(var(--z-header) - 2);
}
.nav-overlay.open { display: block; }

/* ── Mobile Nav ──────────────────────────────────────────── */
@media (max-width: 1024px) {
  .nav-toggle {
    display: flex !important;
    visibility: visible !important;
    opacity: 1 !important;
  }

  .hide-mobile {
    display: none !important;
  }

  /* Mobile menu panel — fully opaque, NO blur */
  .nav-menu {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    /* Fully opaque background — no semi-transparency */
    background: #ffffff;
    flex-direction: column;
    align-items: flex-start;
    padding: calc(var(--header-height) + var(--sp-5)) var(--sp-5) var(--sp-8);
    gap: var(--sp-2);
    overflow-y: auto;
    overflow-x: hidden;
    /* Slide in from right */
    transform: translateX(100%);
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    /* Header z-index is 300, menu below at 299+1 = stays below header */
    z-index: calc(var(--z-header) - 1);
    justify-content: flex-start;
    -webkit-overflow-scrolling: touch;
    /* NO backdrop-filter, NO blur */
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    box-shadow: none;
  }

  [data-theme="dark"] .nav-menu {
    background: #0d0f1a;
  }

  .nav-menu.open {
    transform: translateX(0) !important;
    visibility: visible !important;
    opacity: 1 !important;
    display: flex !important;
  }

  .nav-item {
    width: 100%;
  }

  /* Nav links — solid opaque cards, completely sharp */
  .nav-link {
    width: 100%;
    padding: var(--sp-4) var(--sp-5);
    font-size: var(--fs-base);
    font-weight: var(--fw-medium);
    border-radius: var(--radius-lg);
    border: 1.5px solid #e2e8f0;
    background: #f5f7fa;
    color: #1A1D29;
    justify-content: space-between;
    box-sizing: border-box;
    /* NO blur, NO transparency */
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    transition: background 0.18s ease, border-color 0.18s ease, color 0.18s ease;
  }

  [data-theme="dark"] .nav-link {
    background: #1A1D29;
    border-color: #2e3147;
    color: #f0f4ff;
  }

  .nav-link:hover {
    background: #eef1f8 !important;
    border-color: var(--color-primary) !important;
    color: var(--color-primary) !important;
  }
  [data-theme="dark"] .nav-link:hover {
    background: #242736 !important;
    border-color: var(--color-cyan) !important;
    color: var(--color-cyan) !important;
  }

  /* Active nav link */
  .nav-link.active {
    background: #eef1f8 !important;
    border-color: var(--color-primary) !important;
    color: var(--color-primary) !important;
    font-weight: var(--fw-semibold);
  }
  [data-theme="dark"] .nav-link.active {
    background: rgba(0, 217, 255, 0.08) !important;
    border-color: var(--color-cyan) !important;
    color: var(--color-cyan) !important;
  }

  .nav-link.active::after {
    display: none;
  }

  /* Mobile dropdown panels — also fully opaque */
  .nav-dropdown .dropdown-panel {
    position: static;
    opacity: 1;
    pointer-events: all;
    transform: none !important;
    width: 100%;
    box-shadow: none;
    display: none;
    background: transparent;
    border: none;
    border-radius: 0;
    padding: var(--sp-2) 0 var(--sp-2) var(--sp-3);
    margin-top: var(--sp-1);
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
  }

  .nav-dropdown.mobile-open .dropdown-panel {
    display: block !important;
  }

  .nav-dropdown.mobile-open .nav-link-drop i {
    transform: rotate(180deg);
  }

  .dropdown-grid {
    grid-template-columns: 1fr;
    gap: var(--sp-1);
    margin-bottom: var(--sp-3);
  }

  /* Drop items — solid crisp cards */
  .drop-item {
    padding: var(--sp-3) var(--sp-4);
    background: #f5f7fa;
    border: 1px solid #e2e8f0;
    border-radius: var(--radius-md);
    margin-bottom: var(--sp-1);
    font-size: var(--fs-sm);
    color: #1A1D29;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
  }
  [data-theme="dark"] .drop-item {
    background: #1A1D29;
    border-color: #2e3147;
    color: #f0f4ff;
  }
  .drop-item:hover {
    background: var(--color-primary) !important;
    border-color: var(--color-primary) !important;
    color: #fff !important;
  }
  [data-theme="dark"] .drop-item:hover {
    background: rgba(0, 217, 255, 0.12) !important;
    border-color: var(--color-cyan) !important;
    color: var(--color-cyan) !important;
  }

  .drop-cta {
    margin-top: var(--sp-2);
  }
}

@media (max-width: 768px) {
  .nav-container {
    padding: 0 var(--sp-4);
  }
  .logo-img {
    height: 40px;
  }
  .nav-toggle {
    display: flex !important;
    width: 40px;
    height: 40px;
  }
}

@media (max-width: 480px) {
  .nav-container {
    padding: 0 var(--sp-3);
  }
  .nav-menu {
    padding-left: var(--sp-4);
    padding-right: var(--sp-4);
  }
}