/* ═══════════════════════════════════════════════
   BSPL — NAVIGATION
   nav.css
   ═══════════════════════════════════════════════ */

/* ── Sticky nav wrapper ────────────────────────── */
.nav-wrapper {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid rgba(226, 232, 240, 0.6);
  transition: box-shadow 0.3s var(--ease-standard);
}
.nav-wrapper.scrolled {
  box-shadow: var(--shadow-md);
}

/* ── Nav container ─────────────────────────────── */
.nav-container {
  max-width: 1280px;
  margin-inline: auto;
  padding-inline: clamp(20px, 5vw, 80px);
  height: 72px;
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

/* ── Logo ──────────────────────────────────────── */
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  text-decoration: none;
}
.nav-logo-text {
  display: flex;
  flex-direction: column;
  gap: 1px;
}
.nav-logo-name {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--color-gray-900);
  letter-spacing: -0.02em;
  line-height: 1.2;
}
.nav-logo-tag {
  font-size: 10px;
  font-weight: 500;
  color: var(--color-gray-400);
  letter-spacing: 0.04em;
  line-height: 1;
}

/* ── Desktop nav links ─────────────────────────── */
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
  margin-left: auto;
}
.nav-link {
  position: relative;
  padding: 6px 12px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-gray-600);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: color 0.2s ease, background 0.2s ease;
  white-space: nowrap;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  transform-origin: center;
  width: calc(100% - 24px);
  height: 2px;
  background: var(--gradient-brand);
  border-radius: 1px;
  transition: transform 0.22s var(--ease-spring);
}
.nav-link:hover {
  color: var(--color-teal-600);
}
.nav-link:hover::after { transform: translateX(-50%) scaleX(1); }
.nav-link-active {
  color: var(--color-teal-600);
  font-weight: 600;
}
.nav-link-active::after { transform: translateX(-50%) scaleX(1); }

/* ── Nav actions ───────────────────────────────── */
.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-left: var(--space-4);
  flex-shrink: 0;
}

/* ── Hamburger ─────────────────────────────────── */
.nav-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  padding: 8px;
}
.hamburger-line {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-gray-700);
  border-radius: 2px;
  transition: transform 0.3s var(--ease-spring), opacity 0.3s ease, width 0.3s ease;
}
.nav-hamburger[aria-expanded="true"] .hamburger-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-hamburger[aria-expanded="true"] .hamburger-line:nth-child(2) {
  opacity: 0; width: 0;
}
.nav-hamburger[aria-expanded="true"] .hamburger-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ── Mobile menu ───────────────────────────────── */
.mobile-menu {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(400px, 100vw);
  background: #ffffff;
  z-index: var(--z-modal);
  display: flex;
  flex-direction: column;
  padding: var(--space-6);
  transform: translateX(100%);
  transition: transform 0.35s var(--ease-spring);
  box-shadow: var(--shadow-2xl);
  overflow-y: auto;
}
.mobile-menu.open {
  transform: translateX(0);
}
.mobile-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.5);
  backdrop-filter: blur(4px);
  z-index: calc(var(--z-modal) - 1);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}
.mobile-overlay.open {
  opacity: 1;
  pointer-events: all;
}
.mobile-menu-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-10);
}
.mobile-close {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-gray-100);
  border: none;
  border-radius: var(--radius-full);
  color: var(--color-gray-600);
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease;
}
.mobile-close:hover {
  background: var(--color-gray-200);
  color: var(--color-gray-900);
}
.mobile-menu-section {
  margin-bottom: var(--space-6);
}
.mobile-menu-category {
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-gray-400);
  padding: 0 16px;
  margin-bottom: var(--space-2);
}
.mobile-nav-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.mobile-nav-link {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 16px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  color: var(--color-gray-800);
  border-radius: var(--radius-lg);
  transition: background 0.2s ease, color 0.2s ease, transform 0.15s ease;
  text-decoration: none;
  min-height: 48px;
}
.mobile-nav-link svg {
  flex-shrink: 0;
  color: var(--color-gray-500);
  transition: color 0.2s ease, transform 0.2s ease;
}
.mobile-nav-link:hover, .mobile-nav-link:active {
  background: var(--color-teal-50);
  color: var(--color-teal-700);
}
.mobile-nav-link:hover svg, .mobile-nav-link:active svg {
  color: var(--color-teal-600);
  transform: scale(1.08);
}
.mobile-cta {
  margin-top: auto;
  padding-top: var(--space-4);
  width: 100%;
  justify-content: center;
}

/* Bottom sheet style for phone screens */
@media (max-width: 640px) {
  .mobile-menu {
    top: auto;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100vw;
    max-height: 88vh;
    border-radius: var(--radius-2xl) var(--radius-2xl) 0 0;
    transform: translateY(100%);
    padding: var(--space-6) var(--space-5);
    box-shadow: 0 -10px 40px rgba(0, 0, 0, 0.15);
  }
  .mobile-menu.open {
    transform: translateY(0);
  }
  .mobile-menu-header {
    margin-bottom: var(--space-6);
  }
}