/* =========================================================
   navigation.css
   SecureLynx Header / Navigation
   ========================================================= */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: var(--z-overlay);
  padding: 22px 0;
  background: rgba(5, 7, 13, 0.46);
  border-bottom: 1px solid rgba(0, 230, 255, 0.08);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  transition:
    padding var(--transition-medium),
    background var(--transition-medium),
    border-color var(--transition-medium);
}

.site-header.scrolled {
  padding: 14px 0;
  background: rgba(5, 7, 13, 0.86);
  border-bottom-color: rgba(0, 230, 255, 0.18);
}

.nav-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

/* ---- Logo ---- */

.nav-logo {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  flex: 0 0 auto;
}

.nav-logo img {
  width: 44px;
  height: 44px;
  object-fit: contain;
}

.nav-wordmark {
  display: block;
  line-height: 1;
}

.nav-wordmark strong {
  font-size: 1.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.nav-wordmark span {
  margin-top: 6px;
  font-size: 0.58rem;
  letter-spacing: 0.42em;
  text-transform: uppercase;
}

/* Phone is inside nav-wordmark for mobile SEO; hidden on desktop */
.nav-wordmark .nav-phone {
  display: none;
}
/* ---- Nav links (desktop) ---- */

.nav-links {
  display: flex;
  align-items: center;
  gap: 30px;
}

.nav-link {
  position: relative;
  color: var(--text-secondary);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  transition: color var(--transition-fast);
  white-space: nowrap;
}

.nav-link:hover,
.nav-link.active {
  color: var(--cyan);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -9px;
  width: 100%;
  height: 1px;
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: center;
  opacity: 0;
  transition:
    transform var(--transition-fast),
    opacity var(--transition-fast);
}

.nav-link:hover::after,
.nav-link.active::after {
  transform: scaleX(1);
  opacity: 1;
}

/* ---- Nav actions (button + phone) ---- */

.nav-actions {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 4px;
  flex: 0 0 auto;
}

.nav-phone {
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.10em;
  color: var(--cyan);
  white-space: nowrap;
  transition: color var(--transition-fast);
}

.nav-phone:hover {
  color: var(--green);
}

/* ---- Hamburger button (hidden on desktop) ---- */

.nav-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 0;
  background: none;
  border: 1px solid rgba(0, 230, 255, 0.22);
  border-radius: var(--radius-sm);
  cursor: pointer;
  flex-shrink: 0;
  transition: border-color var(--transition-fast);
}

.nav-hamburger:hover {
  border-color: rgba(0, 230, 255, 0.54);
}

.nav-hamburger span {
  display: block;
  width: 18px;
  height: 1.5px;
  background: var(--cyan);
  border-radius: 1px;
  transition:
    transform var(--transition-medium),
    opacity var(--transition-fast);
  transform-origin: center;
}

/* Animate to X when open */
.nav-hamburger.is-open span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}
.nav-hamburger.is-open span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.nav-hamburger.is-open span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* =========================================================
   Tablet — 769px–1280px only
   Nav links wrap below logo row, scroll horizontally.
   ========================================================= */

@media (min-width: 769px) and (max-width: 1280px) {
  .site-header {
    padding: 14px 0 12px;
  }

  .site-header.scrolled {
    padding: 10px 0;
  }

  .nav-shell {
    flex-wrap: wrap;
    gap: 12px 18px;
  }

  .nav-links {
    order: 3;
    width: 100%;
    gap: 20px;
    padding: 8px 0 2px;
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  .nav-links::-webkit-scrollbar {
    display: none;
  }

  .nav-link {
    flex: 0 0 auto;
    font-size: 0.68rem;
    letter-spacing: 0.1em;
  }

  .nav-link::after {
    bottom: -5px;
  }
}

/* =========================================================
   Mobile — 768px and below
   Pancake button appears. Nav links become an overlay drawer.
   ========================================================= */

@media (max-width: 768px) {

  /* Shell — wraps to two rows:
   *   Row 1: [logo]  [hamburger]
   *   Row 2: [Serving Southern California  213.550.5335]
   */
  .nav-shell {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 4px 8px;
  }

  /* Logo — row 1, takes remaining width */
  .nav-logo {
    flex: 1 1 auto;
    order: 1;
    gap: 10px;
    min-width: 0;
  }

  .nav-logo img {
    width: 34px;
    height: 34px;
  }

  .nav-wordmark strong {
    font-size: 1rem;
    letter-spacing: 0.06em;
  }

  .nav-wordmark span {
    font-size: 0.5rem;
    letter-spacing: 0.28em;
  }

  /* Hamburger — row 1, far right */
  .nav-hamburger {
    display: flex;
    flex-shrink: 0;
    order: 2;
  }

  /* Phone — row 2, full width, right-aligned */
  .nav-phone {
    order: 3;
    width: 100%;
    display: block;
    text-align: right;
    font-size: 0.56rem;
    letter-spacing: 0.08em;
    padding-bottom: 2px;
  }

  /* Actions — hide button on mobile, phone stays visible via order:3 row */
  .nav-actions {
    display: contents;
  }

  .nav-actions .btn {
    display: none;
  }

  /* ---- Overlay drawer ---- */

  .nav-links {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 0;
    overflow: visible;
    width: auto;
    order: unset;

    /* Overlay positioning */
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(320px, 80vw);
    z-index: calc(var(--z-overlay) + 1);

    background: rgba(5, 7, 13, 0.97);
    border-left: 1px solid rgba(0, 230, 255, 0.14);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    padding-top: 80px;

    /* Hidden state */
    transform: translateX(100%);
    visibility: hidden;
    transition:
      transform var(--transition-medium),
      visibility var(--transition-medium);
  }

  .nav-links.is-open {
    transform: translateX(0);
    visibility: visible;
  }

  /* Individual links in drawer */
  .nav-links .nav-link {
    display: block;
    width: 100%;
    padding: 16px 28px;
    font-size: 0.78rem;
    letter-spacing: 0.12em;
    border-bottom: 1px solid rgba(0, 230, 255, 0.07);
    white-space: normal;
  }

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

  /* Dim the page content behind the overlay */
  body.nav-open::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: var(--z-overlay);
    background: rgba(3, 8, 18, 0.62);
  }

}