/* ═══════════════════════════════════════════════════════════════
   chrome.css — AuditWalk shared site chrome
   Header, footer, theme controls, social icons.
   Loaded after main.css on all pages.
   Clean consolidated version — no duplicate declarations,
   no patch overrides. Every property stated once.
   ═══════════════════════════════════════════════════════════════ */

/* ── Chrome design tokens ───────────────────────────────────── */
:root {
  --chrome-header-bg:          color-mix(in srgb, var(--surface-page), transparent 4%);
  --chrome-header-border:      var(--border-default);
  --chrome-header-text:        var(--text-primary);
  --chrome-nav-text:           var(--action-bg-alt);
  --chrome-nav-border:         color-mix(in srgb, var(--action-bg-alt), transparent 65%);
  --chrome-nav-active-bg:      var(--action-bg-alt);
  --chrome-nav-active-text:    var(--action-fg-alt);
  --chrome-dropdown-bg:        #0c1016;
  --chrome-dropdown-border:    color-mix(in srgb, var(--action-bg-alt), transparent 60%);
  --chrome-dropdown-meta:      #c7ced8;
  --chrome-control-border:     var(--action-bg-alt);
  --chrome-control-text:       var(--action-bg-alt);
  --chrome-control-hover-bg:   var(--action-bg-alt);
  --chrome-control-hover-text: var(--action-fg-alt);
  --chrome-footer-bg:          #000000;
  --chrome-footer-border:      #303030;
  --chrome-footer-text:        #e2e7ed;
  --chrome-footer-heading:     var(--text-primary);
  --chrome-input-bg:           #171b21;
  --chrome-input-border:       #303030;
  --chrome-input-text:         var(--text-primary);
  --chrome-input-placeholder:  #99a2ad;
}

html[data-theme="light"] {
  --chrome-header-bg:          color-mix(in srgb, var(--surface-page), transparent 2%);
  --chrome-header-border:      var(--border-default);
  --chrome-header-text:        var(--text-primary);
  --chrome-nav-text:           var(--action-fg-alt);
  --chrome-nav-border:         var(--border-default);
  --chrome-nav-active-bg:      var(--action-bg-alt);
  --chrome-nav-active-text:    var(--action-fg-alt);
  --chrome-dropdown-bg:        #ffffff;
  --chrome-dropdown-border:    var(--border-default);
  --chrome-dropdown-meta:      #5f646d;
  --chrome-control-border:     var(--border-default);
  --chrome-control-text:       var(--action-fg-alt);
  --chrome-control-hover-bg:   var(--action-bg-alt);
  --chrome-control-hover-text: var(--action-fg-alt);
  --chrome-footer-bg:          var(--surface-page);
  --chrome-footer-border:      #c0c0b8;
  --chrome-footer-text:        var(--text-primary);
  --chrome-footer-heading:     var(--text-primary);
  --chrome-input-bg:           #ffffff;
  --chrome-input-border:       var(--border-default);
  --chrome-input-text:         var(--text-primary);
  --chrome-input-placeholder:  #5f646d;
}

/* ═══════════════════════════════════════════════════════════════
   HEADER
   ═══════════════════════════════════════════════════════════════ */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 16px;
  padding: 10px clamp(16px, 3.2vw, 52px);
  background: var(--chrome-header-bg);
  border-bottom: 1px solid var(--chrome-header-border);
  backdrop-filter: blur(14px);
  transition: border-color 0.25s ease, background 0.25s ease;
}

.site-header.scrolled {
  border-bottom-color: color-mix(in srgb, var(--action-bg-alt), transparent 60%);
}

/* ── Brand mark ─────────────────────────────────────────────── */
.brand-mark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: "Hanken Grotesk", system-ui, -apple-system, sans-serif;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--chrome-header-text);
  text-decoration: none;
}

.brand-mark img,
.brand-mark svg {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}

/* ── Primary nav ────────────────────────────────────────────── */
.main-nav {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 8px;
}

.nav-group {
  position: relative;
}

.nav-group-trigger {
  font-family: "Hanken Grotesk", system-ui, -apple-system, sans-serif;
  font-size: 11px;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--chrome-nav-text);
  font-weight: 700;
  padding: 7px 11px;
  border: 1px solid var(--chrome-nav-border);
  background: transparent;
  cursor: pointer;
  transition: color 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

.nav-group-trigger:hover,
.nav-group-trigger:focus-visible,
.nav-group.is-open .nav-group-trigger,
.nav-group.is-active .nav-group-trigger {
  color: var(--chrome-nav-active-text);
  border-color: var(--chrome-nav-active-bg);
  background: var(--chrome-nav-active-bg);
  outline: none;
}

.nav-group-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  min-width: min(360px, 82vw);
  border: 1px solid var(--chrome-dropdown-border);
  background: var(--chrome-dropdown-bg);
  box-shadow: 0 16px 30px rgba(0, 0, 0, 0.22);
  display: none;
  z-index: 80;
}

.nav-group.is-open .nav-group-menu {
  display: grid;
}

.nav-menu-item {
  display: block;
  padding: 0.72rem 0.82rem;
  border-bottom: 1px solid color-mix(in srgb, var(--chrome-dropdown-border), transparent 45%);
  text-decoration: none;
  background: transparent;
}

.nav-menu-item:last-child {
  border-bottom: none;
}

.nav-menu-item:hover,
.nav-menu-item:focus-visible,
.nav-menu-item.is-active,
.nav-menu-item[aria-current="page"] {
  background: color-mix(in srgb, var(--chrome-nav-active-bg), transparent 80%);
  outline: none;
}

.nav-menu-title {
  display: block;
  font-family: "Hanken Grotesk", system-ui, -apple-system, sans-serif;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--chrome-nav-text);
  font-weight: 700;
}

.nav-menu-item:hover .nav-menu-title,
.nav-menu-item:focus-visible .nav-menu-title,
.nav-menu-item.is-active .nav-menu-title,
.nav-menu-item[aria-current="page"] .nav-menu-title {
  color: var(--chrome-nav-active-text);
}

.nav-menu-meta {
  display: block;
  margin-top: 0.35rem;
  font-size: 0.77rem;
  line-height: 1.45;
  color: var(--chrome-dropdown-meta);
}

/* ── Header actions ─────────────────────────────────────────── */
.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-right: 0;
}

.nav-download,
.nav-buy {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: "Hanken Grotesk", system-ui, -apple-system, sans-serif;
  font-size: 11px;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  font-weight: 700;
  padding: 7px 11px;
  border: 1px solid var(--chrome-nav-border);
  text-decoration: none;
  transition: color 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

.nav-download {
  background: var(--chrome-nav-active-bg);
  color: var(--chrome-nav-active-text);
  border-color: var(--chrome-nav-active-bg);
}

.nav-download:hover,
.nav-download:focus-visible,
.nav-buy:hover,
.nav-buy:focus-visible {
  background: var(--chrome-control-hover-bg);
  color: var(--chrome-control-hover-text);
  border-color: var(--chrome-control-hover-bg);
  outline: none;
}

.nav-buy {
  background: transparent;
  color: var(--chrome-nav-text);
}

.nav-buy.is-active,
.nav-buy[aria-current="page"] {
  background: color-mix(in srgb, var(--chrome-nav-active-bg), transparent 80%);
  border-color: var(--chrome-nav-active-bg);
}

.nav-search {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--chrome-control-border);
  color: var(--chrome-control-text);
  text-decoration: none;
}

.nav-search:hover,
.nav-search:focus-visible {
  background: var(--chrome-control-hover-bg);
  color: var(--chrome-control-hover-text);
  border-color: var(--chrome-control-hover-bg);
  outline: none;
}

.nav-search svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

/* ── Theme toggle ───────────────────────────────────────────── */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--chrome-control-border);
  border-radius: 999px;
  background: transparent;
  color: var(--chrome-control-text);
  cursor: pointer;
  flex-shrink: 0;
  padding: 0;
  transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}

.theme-toggle:hover,
.theme-toggle:focus-visible {
  background: var(--chrome-control-hover-bg);
  color: var(--chrome-control-hover-text);
  border-color: var(--chrome-control-hover-bg);
  outline: none;
}

.theme-toggle-glyph {
  width: 18px;
  height: 18px;
  border: 1px solid currentColor;
  border-radius: 999px;
  overflow: hidden;
  display: inline-flex;
}

.theme-half       { width: 50%; height: 100%; display: block; }
.theme-half-dark  { background: var(--action-fg-alt); }
.theme-half-light { background: var(--action-bg-alt); }

/* ── Social icon links ──────────────────────────────────────── */
.icon-links {
  display: flex;
  gap: 6px;
}

.icon-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--chrome-control-border);
  border-radius: 0;
  background: transparent;
  color: var(--chrome-control-text);
  transition: background 0.18s ease, color 0.18s ease, transform 0.18s ease;
}

.icon-links a:hover,
.icon-links a:focus-visible {
  background: var(--chrome-control-hover-bg);
  color: var(--chrome-control-hover-text);
  transform: translateY(-1px);
  outline: none;
}

.icon-links svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
  display: block;
}

/* ── Hamburger menu toggle ──────────────────────────────────── */
.menu-toggle {
  /* Hidden on desktop, shown in the 960px breakpoint below */
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  width: 30px;
  height: 24px;
  padding: 0;
  margin-right: 0; /* flush right — no trailing space */
  background: transparent;
  border: none;
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--chrome-header-text);
}

/* ═══════════════════════════════════════════════════════════════
   FOOTER
   ═══════════════════════════════════════════════════════════════ */

footer {
  width: 100%;
  background: var(--chrome-footer-bg);
  border-top: 1px solid color-mix(in srgb, var(--action-bg-alt), transparent 60%);
  border-bottom: 1px solid var(--chrome-footer-border);
  position: relative;
  z-index: 1;
}

.footer-inner {
  /* width: 100% + max-width scales correctly on all viewports.
     Never use min() or max() with a fixed px floor — it prevents
     the footer from shrinking on mobile. */
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 32px clamp(16px, 3.2vw, 52px);
  box-sizing: border-box;
}

/* ── Footer branding block ──────────────────────────────────── */
.footer-brand {
  width: 100%;
  margin-bottom: 1.5rem;
}

.footer-emblem         { margin-bottom: 10px; }
.footer-emblem svg,
.footer-emblem img     { width: 30px; height: 30px; }

.footer-topline {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--chrome-footer-heading);
  margin-bottom: 4px;
}

.footer-tagline {
  font-family: "Hanken Grotesk", system-ui, -apple-system, sans-serif;
  font-size: 12px;
  font-weight: 600;
  color: var(--chrome-footer-text);
  margin-bottom: 24px;
}

/* ── Footer columns grid ────────────────────────────────────── */
.footer-columns {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 24px;
  margin-bottom: 28px;
}

.footer-column h3 {
  font-family: "Hanken Grotesk", system-ui, -apple-system, sans-serif;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--chrome-footer-text);
  font-weight: 700;
  margin: 0 0 12px;
}

.footer-column a {
  display: block;
  font-size: 13px;
  margin-bottom: 8px;
  color: var(--chrome-footer-text);
  text-decoration: none;
  transition: color 0.18s;
}

.footer-column a:hover  { color: var(--chrome-footer-heading); }

.footer-column ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

/* ── Email signup ───────────────────────────────────────────── */
.footer-alerts {
  border-top: 1px solid var(--chrome-footer-border);
  padding-top: 20px;
  margin-bottom: 24px;
}

.footer-alerts h3 {
  font-family: "Hanken Grotesk", system-ui, -apple-system, sans-serif;
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 4px;
  color: var(--chrome-footer-heading);
}

.footer-alerts p {
  font-size: 13px;
  font-weight: 500;
  color: var(--chrome-footer-text);
  margin-bottom: 12px;
}

.alerts-form {
  display: flex;
  max-width: 400px;
}

.alerts-form input {
  flex: 1;
  border: 1px solid var(--chrome-input-border);
  border-right: none;
  background: var(--chrome-input-bg);
  color: var(--chrome-input-text);
  padding: 10px 14px;
  font-family: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
  font-size: 12px;
  outline: none;
}

.alerts-form input:focus      { border-color: var(--chrome-header-border); }
.alerts-form input::placeholder { color: var(--chrome-input-placeholder); }

.alerts-form button {
  border: 1px solid var(--chrome-control-border);
  background: var(--chrome-control-hover-bg);
  color: var(--chrome-control-hover-text);
  padding: 10px 16px;
  font-family: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  cursor: pointer;
  letter-spacing: 0.06em;
  transition: background 0.18s;
}

.alerts-form button:hover { background: var(--chrome-control-hover-bg); }

/* ── Footer copyright bar ───────────────────────────────────── */
.footer-logo {
  border-top: 1px solid var(--chrome-footer-border);
  padding-top: 16px;
  font-size: 12px;
  line-height: 1.65;
  font-weight: 500;
  color: var(--chrome-footer-text);
}

.footer-logo span  { color: var(--chrome-footer-text); }
.footer-logo strong { color: var(--chrome-footer-heading); }

.footer-logo a {
  color: var(--chrome-footer-text);
  border-bottom: 1px solid var(--chrome-footer-border);
  transition: color 0.18s;
}

.footer-logo a:hover { color: var(--chrome-footer-heading); }

/* ═══════════════════════════════════════════════════════════════
   RESPONSIVE BREAKPOINTS
   One block per breakpoint, all chrome concerns grouped together.
   ═══════════════════════════════════════════════════════════════ */

/* ── 960px — tablet / mobile header ────────────────────────── */
@media (max-width: 960px) {
  /* Hide desktop nav panel and secondary controls */
  .main-nav  { display: none; }
  .nav-search { display: none; }
  .theme-toggle { display: inline-flex; }

  /* Show hamburger, flush right, no gap */
  .menu-toggle {
    display: flex;
  }

  .header-actions {
    gap: 8px;
    justify-content: flex-end;
  }

  /* Keep only the primary CTA visible in compact header */
  .nav-buy {
    display: none;
  }

  .nav-download { display: none; }

  /* Mobile nav panel when open */
  .site-header.nav-open .main-nav {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 52px;
    left: 0;
    right: 0;
    padding: 12px clamp(16px, 3.2vw, 52px);
    background: var(--surface-panel);
    border-bottom: 1px solid var(--chrome-header-border);
    justify-content: flex-start;
    gap: 10px;
  }

  .site-header.nav-open .nav-group {
    width: 100%;
  }

  .site-header.nav-open .nav-group-trigger {
    width: 100%;
    text-align: left;
  }

  .site-header.nav-open .nav-group-menu {
    position: static;
    min-width: 0;
    box-shadow: none;
    margin-top: 6px;
    border-color: var(--chrome-nav-border);
  }

  /* Footer: 2 columns at tablet */
  .footer-columns {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ── 600px — small mobile ───────────────────────────────────── */
@media (max-width: 600px) {
  /* Footer stays 2 columns — there's enough room */
  .footer-columns {
    grid-template-columns: 1fr 1fr;
  }

  /* Email form stacks vertically */
  .alerts-form {
    flex-direction: column;
    max-width: 100%;
  }

  .alerts-form input {
    border-right: 1px solid var(--chrome-input-border);
    border-bottom: none;
  }
}

/* ── 420px — very small phones ──────────────────────────────── */
@media (max-width: 420px) {
  .site-header {
    gap: 8px;
    padding: 8px 12px;
  }
}