/* ==========================================================================
   Site navigation — shared across all pages (index, L6–L9, i6, i8, ...)
   Edit colors/spacing here. Edit the LINKS THEMSELVES in nav.js.
   ========================================================================== */

:root {
  --nav-height: 72px;
  --nav-height-mobile: 60px;
  --nav-bg: #ffffff;
  --nav-text: #16181a;
  --nav-text-muted: #6f7478;
  --nav-border: #ececec;
  --nav-accent: #2f6f5e;      /* Li Auto jade-green accent */
  --nav-accent-dark: #234f43;
}

* { box-sizing: border-box; }

.site-nav {
  position: sticky;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  background: var(--nav-bg);
  border-bottom: 1px solid transparent;
  transition: box-shadow 0.25s ease, border-color 0.25s ease;
}

.site-nav.is-scrolled {
  border-color: var(--nav-border);
  box-shadow: 0 2px 14px rgba(0, 0, 0, 0.06);
}

.site-nav__inner {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 24px;
}

.site-nav__logo {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--nav-text);
  text-decoration: none;
  white-space: nowrap;
  flex-shrink: 0;
}

/* ---- Primary nav: Home / About / Services + "Vehicles" dropdown ---- */
.site-nav__primary {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 2px;
}

.site-nav__item {
  position: relative;
  display: inline-block;
}

.site-nav__link,
.site-nav__trigger {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  font: inherit;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.03em;
  color: var(--nav-text-muted);
  background: none;
  border: none;
  cursor: pointer;
  border-radius: 6px;
  text-decoration: none;
  transition: color 0.2s ease, background 0.2s ease;
}

.site-nav__link:hover,
.site-nav__trigger:hover,
.site-nav__trigger[aria-expanded="true"] {
  color: var(--nav-text);
  background: rgba(0, 0, 0, 0.04);
}

.site-nav__link.is-active,
.site-nav__trigger.is-active {
  color: var(--nav-text);
  font-weight: 700;
}

.site-nav__caret {
  transition: transform 0.2s ease;
  flex-shrink: 0;
}

.site-nav__item.is-open .site-nav__caret {
  transform: rotate(180deg);
}

/* Dropdown opens ONLY on click (via .is-open, toggled in nav.js) */
.site-nav__dropdown {
  position: absolute;
  top: calc(100% + 10px);
  left: 0;
  min-width: 200px;
  background: #ffffff;
  border: 1px solid var(--nav-border);
  border-radius: 12px;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.12);
  padding: 8px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: opacity 0.18s ease, transform 0.18s ease, visibility 0.18s;
}

.site-nav__item.is-open .site-nav__dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.site-nav__dropdown-link {
  padding: 10px 12px;
  font-size: 14px;
  font-weight: 500;
  color: var(--nav-text);
  text-decoration: none;
  border-radius: 8px;
  transition: background 0.15s ease;
}

.site-nav__dropdown-link:hover {
  background: rgba(47, 111, 94, 0.08);
}

.site-nav__dropdown-link.is-active {
  color: var(--nav-accent);
  font-weight: 700;
  background: rgba(47, 111, 94, 0.08);
}

/* ---- Auth (Login / Register) — desktop, sits in the top bar ---- */
.site-nav__auth--desktop {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.site-nav__login {
  padding: 10px 16px;
  font-size: 14px;
  font-weight: 600;
  color: var(--nav-text);
  text-decoration: none;
  border-radius: 999px;
  white-space: nowrap;
  transition: background 0.2s ease;
}

.site-nav__login:hover {
  background: rgba(0, 0, 0, 0.05);
}

.site-nav__register {
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 600;
  color: #ffffff;
  background: var(--nav-accent);
  border-radius: 999px;
  text-decoration: none;
  white-space: nowrap;
  transition: background 0.2s ease;
}

.site-nav__register:hover {
  background: var(--nav-accent-dark);
}

/* ---- Mobile hamburger toggle (hidden on desktop) ---- */
.site-nav__toggle {
  display: none;
  position: relative;
  width: 24px;
  height: 18px;
  padding: 0;
  border: none;
  background: transparent;
  cursor: pointer;
  flex-shrink: 0;
}

.site-nav__toggle-bar {
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--nav-text);
  border-radius: 2px;
  transition: top 0.2s ease, transform 0.2s ease, opacity 0.2s ease;
}

.site-nav__toggle-bar:nth-child(1) { top: 0; }
.site-nav__toggle-bar:nth-child(2) { top: 8px; }
.site-nav__toggle-bar:nth-child(3) { top: 16px; }

.site-nav.is-open .site-nav__toggle-bar:nth-child(1) {
  top: 8px;
  transform: rotate(45deg);
}
.site-nav.is-open .site-nav__toggle-bar:nth-child(2) {
  opacity: 0;
}
.site-nav.is-open .site-nav__toggle-bar:nth-child(3) {
  top: 8px;
  transform: rotate(-45deg);
}

/* ---- Mobile slide-in panel + backdrop (hidden on desktop) ---- */
.site-nav__panel {
  display: none;
}

.site-nav__backdrop {
  display: none;
}

/* ==========================================================================
   Mobile layout
   ========================================================================== */
@media (max-width: 900px) {
  .site-nav {
    height: var(--nav-height-mobile);
  }

  /* Desktop-only elements: fully removed from the mobile top bar so
     nothing can overlap or overshadow the menu. */
  .site-nav__primary,
  .site-nav__auth--desktop {
    display: none;
  }

  .site-nav__inner {
    justify-content: space-between;
  }

  .site-nav__toggle {
    display: block;
  }

  .site-nav__panel {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: var(--nav-height-mobile);
    right: 0;
    bottom: 0;
    width: 78%;
    max-width: 320px;
    background: var(--nav-bg);
    padding: 16px;
    transform: translateX(100%);
    transition: transform 0.3s ease;
    overflow-y: auto;
    box-shadow: -8px 0 24px rgba(0, 0, 0, 0.08);
    z-index: 1001;
  }

  .site-nav.is-open .site-nav__panel {
    transform: translateX(0);
  }

  .site-nav__panel-link {
    display: block;
    padding: 14px 8px;
    font-size: 16px;
    font-weight: 500;
    color: var(--nav-text);
    text-decoration: none;
    border-bottom: 1px solid var(--nav-border);
  }

  .site-nav__panel-link.is-active {
    color: var(--nav-accent);
    font-weight: 700;
  }

  /* "Vehicles" accordion — collapsed by default, opens on click */
  .site-nav__panel-accordion-trigger {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 14px 8px;
    font: inherit;
    font-size: 16px;
    font-weight: 500;
    color: var(--nav-text);
    background: none;
    border: none;
    border-bottom: 1px solid var(--nav-border);
    cursor: pointer;
  }

  .site-nav__panel-accordion .site-nav__caret {
    color: var(--nav-text-muted);
  }

  .site-nav__panel-accordion.is-open .site-nav__caret {
    transform: rotate(180deg);
  }

  .site-nav__panel-accordion-content {
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows 0.25s ease;
  }

  .site-nav__panel-accordion.is-open .site-nav__panel-accordion-content {
    grid-template-rows: 1fr;
  }

  .site-nav__panel-accordion-inner {
    overflow: hidden;
  }

  .site-nav__panel-link--sub {
    padding-left: 24px;
    font-size: 15px;
    color: var(--nav-text-muted);
    border-bottom: 1px solid var(--nav-border);
  }

  .site-nav__panel-link--sub.is-active {
    color: var(--nav-accent);
    font-weight: 700;
  }

  .site-nav__panel-auth {
    display: flex;
    gap: 10px;
    margin-top: 20px;
  }

  .site-nav__panel-auth .site-nav__login,
  .site-nav__panel-auth .site-nav__register {
    flex: 1;
    text-align: center;
    padding: 12px 10px;
  }

  .site-nav__panel-auth .site-nav__login {
    border: 1px solid var(--nav-border);
  }

  .site-nav.is-open .site-nav__backdrop {
    display: block;
    position: fixed;
    inset: var(--nav-height-mobile) 0 0 0;
    background: rgba(0, 0, 0, 0.35);
    z-index: 999;
  }
}