/* ====================================================================== */
/* GLOBAL NAVIGATION (SINGLE SOURCE OF TRUTH)                              */
/* ====================================================================== */
/*
  This file is the ONLY place that should style the injected global nav.

  Injected markup + behavior live in:
    - js/global-nav.js

  Pages should NOT ship any legacy menu logic targeting:
    - .site-nav / .nav-list / .menu-toggle / .mobile-menu-toggle
*/

/* ====================================================================== */
/* CSS VARIABLES                                                           */
/* ====================================================================== */

:root {
  --global-nav-bg: rgba(2, 6, 23, 0.8);
  --global-nav-bg-mobile: rgba(2, 6, 23, 0.95);
  --global-nav-border: #1e293b;
  --global-nav-surface: #1e293b;
  --global-nav-text: #f8fafc;
  --global-nav-text-muted: #94a3b8;
}

/* ====================================================================== */
/* DESKTOP / BASE LAYOUT                                                   */
/* ====================================================================== */

/* --- Header Container --- */
.site-header.global-nav {
  position: sticky;
  top: 0;
  z-index: 1300;
  width: 100%;
  display: block;
  background: var(--global-nav-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--global-nav-border);
  padding: 0;
  transition: transform 0.3s ease;
}

/* --- Inner Wrapper --- */
.site-header.global-nav .nav-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}

/* --- Brand Logo --- */
.site-header.global-nav .global-nav-brand {
  font-weight: 700;
  letter-spacing: 0.03em;
  font-size: 1.125rem;
  color: var(--global-nav-text);
  text-decoration: none;
}

/* --- Nav Panel (Desktop: inline) --- */
.site-header.global-nav .global-nav-panel {
  display: block;
}

/* --- Nav List (shared base for header & detached panel) --- */
.site-header.global-nav .global-nav-list,
.global-nav-panel .global-nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 1rem;
  align-items: center;
}

/* Ensure detached panel list has no unexpected positioning */
.global-nav-panel .global-nav-list {
  position: static !important;
}

/* --- Nav Links (shared base) --- */
.site-header.global-nav .global-nav-list a,
.global-nav-panel .global-nav-list a {
  padding: 8px 16px;
  font-size: 0.9375rem;
  color: var(--global-nav-text-muted);
  text-decoration: none;
  transition: color 0.2s ease, background-color 0.2s ease;
}

/* --- Nav Links: Hover & Active States --- */
.site-header.global-nav .global-nav-list a:hover,
.site-header.global-nav .global-nav-list a[aria-current='page'],
.site-header.global-nav .global-nav-list a[aria-current="page"],
.global-nav-panel .global-nav-list a:hover,
.global-nav-panel .global-nav-list a[aria-current='page'],
.global-nav-panel .global-nav-list a[aria-current="page"] {
  color: var(--global-nav-text);
  background-color: rgba(255, 255, 255, 0.08);
}

/* --- CTA Link Styling --- */
.site-header.global-nav .global-nav-list a.adam-nav-link,
.global-nav-panel .global-nav-list a.adam-nav-link {
  color: var(--global-nav-text);
  font-weight: 600;
  background-color: rgba(255, 255, 255, 0.12);
}

.site-header.global-nav .global-nav-list a.adam-nav-link:hover,
.global-nav-panel .global-nav-list a.adam-nav-link:hover {
  background-color: rgba(255, 255, 255, 0.16);
}

/* --- Hamburger Button (hidden on desktop) --- */
.site-header.global-nav .global-nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  width: 44px;
  height: 44px;
  position: relative;
  flex-direction: column;
  gap: 4px;
}

.site-header.global-nav .global-nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: #ffffff !important;
  transition: transform 0.25s ease, opacity 0.2s ease;
}

/* ====================================================================== */
/* MOBILE (BOTTOM BAR + UPWARD PANEL)                                      */
/* ====================================================================== */

@media (max-width: 768px) {
  /* --- Header: Fixed Bottom Bar --- */
  .site-header.global-nav {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    top: auto;
    border-bottom: none;
    border-top: 1px solid var(--global-nav-border);
    background: var(--global-nav-bg-mobile);
    padding-bottom: env(safe-area-inset-bottom, 0px);
  }

  /* Use dvh for better mobile browser support */
  @supports (height: 100dvh) {
    .site-header.global-nav {
      bottom: auto;
      top: calc(100dvh - var(--global-nav-bar-height, 60px));
    }
  }

  /* --- Header: Hidden State (scroll down) --- */
  .site-header.global-nav.nav-hidden {
    transform: translateY(200%);
  }

  /* --- Inner Wrapper: Tighter Mobile Padding --- */
  .site-header.global-nav .nav-inner {
    padding: 0.75rem 1rem;
    max-width: none;
  }

  /* --- Hamburger Button: Visible on Mobile --- */
  .site-header.global-nav .global-nav-toggle {
    display: flex;
    margin-left: auto;
    margin-right: 1rem;
  }

  /* --- Overlay --- */
  .global-nav-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.35);
    z-index: 1200;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
  }

  .global-nav-overlay.is-visible {
    opacity: 1;
    pointer-events: auto;
  }

  /* --- Nav Panel: Slide-Up Sheet --- */
  .global-nav-panel {
    position: fixed;
    left: auto;
    right: calc(env(safe-area-inset-right, 0px));
    bottom: calc(var(--global-nav-bar-height, 60px));
    background: var(--global-nav-surface);
    padding: 1rem 0;
    border-top: 1px solid var(--global-nav-border);
    width: fit-content;
    max-width: calc(100vw - 2rem - env(safe-area-inset-right, 0px) - env(safe-area-inset-left, 0px));
    height: auto;
    transform: translateY(100%);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.2s ease;
    opacity: 0;
    pointer-events: none;
    overflow: visible;
    z-index: 1250;
  }

  .global-nav-panel.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  /* --- Nav List: Vertical Stack on Mobile --- */
  .site-header.global-nav .global-nav-list,
  .global-nav-panel .global-nav-list {
    flex-direction: column;
    gap: 0.5rem;
    width: max-content;
    max-width: 100%;
  }

  /* --- Nav Links: Full-Width Buttons on Mobile --- */
  .site-header.global-nav .global-nav-list a,
  .global-nav-panel .global-nav-list a {
    display: block;
    width: 100%;
    min-width: 200px;
    padding: 1rem 1.5rem;
    font-size: 1.1rem;
    text-align: left;
    border-radius: 0;
  }

  /* --- Remove CTA highlight on mobile (all links look the same) --- */
  .global-nav-panel .global-nav-list a.adam-nav-link {
    background-color: transparent;
    font-weight: 400;
  }

  .global-nav-panel .global-nav-list a.adam-nav-link:hover {
    background-color: rgba(255, 255, 255, 0.08);
  }
}