/**
 * Site header — matches index.html navigation.
 * Variables live on .nav so legal pages keep their own :root body tokens.
 */
:root {
  /* Horizontal page rhythm (home, legal, drawer). Tighten on small phones. */
  --page-gutter-x: clamp(1.35rem, 3.75vw, 4rem);
  --page-pad-inline: max(var(--page-gutter-x), env(safe-area-inset-left, 0px))
    max(var(--page-gutter-x), env(safe-area-inset-right, 0px));
}

@media (max-width: 640px) {
  :root {
    --page-gutter-x: 1rem;
  }
}

.nav {
  --fs-xs: clamp(0.76rem, 0.74rem + 0.16vw, 0.86rem);
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --accent: #00e5bf;
  --accent-glow: rgba(0, 229, 191, 0.25);
  --text-secondary: #aeb0cf;
  --text-primary: #eeeef0;
  --bg-void: #060610;
  --nav-bg-scrolled: rgba(6, 6, 16, 0.92);
  --nav-mobile-bg: rgba(6, 6, 16, 0.95);
  --nav-border-scrolled: rgba(255, 255, 255, 0.06);
}

@media (prefers-color-scheme: light) {
  .nav {
    --accent: #00b9ad;
    --accent-glow: rgba(0, 185, 173, 0.16);
    --text-secondary: #3f4d78;
    --text-primary: #11172c;
    --bg-void: #f6f8fc;
    --nav-bg-scrolled: rgba(246, 248, 252, 0.95);
    --nav-mobile-bg: rgba(246, 248, 252, 0.98);
    --nav-border-scrolled: rgba(17, 23, 44, 0.14);
  }
}

body.nav-scroll-lock {
  position: fixed;
  overflow: hidden;
  width: 100%;
}

/* homepage seller contact overlay (seller-contact-modal.js) */
body.seller-contact-scroll-lock {
  position: fixed;
  overflow: hidden;
  width: 100%;
}

/* ═══════════════════════════════════════════
   NAVIGATION (shared with index homepage)
   ═══════════════════════════════════════════ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  width: 100%;
  z-index: 10001;
  box-sizing: border-box;
  padding-top: env(safe-area-inset-top, 0px);
  padding-bottom: 0;
  padding-inline: var(--page-pad-inline);
  min-height: calc(72px + env(safe-area-inset-top, 0px));
  height: auto;
  /* Tint + blur live on ::before so .nav is not a backdrop-filter ancestor of the
     fixed full-screen .nav-links (which would trap the drawer to header height). */
  --nav-tint: transparent;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: border-color 0.4s ease;
  overflow: visible;
  /* Match index.html body; without this, macOS subpixel AA makes nav text look heavier */
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.nav::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: var(--nav-tint);
  backdrop-filter: blur(24px) saturate(1.4);
  -webkit-backdrop-filter: blur(24px) saturate(1.4);
  transition: background 0.4s ease;
}

.nav-inner {
  max-width: 1280px;
  margin: 0 auto;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
  z-index: 1;
  min-height: 72px;
  gap: 1rem;
}

.nav-logo {
  display: flex;
  align-items: center;
  line-height: 1;
  position: relative;
  z-index: 10003;
}

.nav-logo-img {
  height: clamp(24px, 2.2vw, 30px);
  width: auto;
  display: block;
}

.nav .nav-logo-img {
  transform: scale(1.2);
  transform-origin: left center;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: clamp(0.9rem, 1.5vw, 1.6rem);
  list-style: none;
  margin: 0;
  padding: 0;
}

/* Isolate nav from page-level rules (e.g. legal pages use `li + li { margin-top }` and `p, li { font-size }`). */
.nav-links > li {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  align-items: center;
  line-height: 1;
}

.nav-links > li + li {
  margin-top: 0;
}

@media (min-width: 941px) {
  .nav-links {
    gap: clamp(1.35rem, 2.2vw, 2.2rem);
  }
  .nav-links a {
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: var(--fs-xs);
  }
}

.nav-links a {
  font-size: var(--fs-xs);
  font-weight: 400;
  color: var(--text-secondary);
  letter-spacing: 0.03em;
  transition: color 0.3s;
  position: relative;
  white-space: nowrap;
  text-decoration: none;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--text-primary);
  text-decoration: none;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--accent);
  transition: width 0.3s var(--ease-out-expo);
}

.nav-links a:hover::after {
  width: 100%;
}

.nav-cta {
  padding: 0.55rem 1.5rem;
  background: transparent;
  border: 1px solid var(--accent) !important;
  color: var(--accent) !important;
  font-size: var(--fs-xs) !important;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border-radius: 999px;
  transition: all 0.3s ease !important;
}

.nav-cta::after {
  display: none !important;
}
.nav-cta:hover {
  background: var(--accent) !important;
  color: var(--bg-void) !important;
  box-shadow: 0 0 24px var(--accent-glow);
}

@media (min-width: 941px) {
  .nav-cta {
    padding-block: 0.88rem;
    padding-inline: 1.65rem;
  }
}

/* Self-contained reset: legal pages have no global `button { … }` like index.html. */
.nav-mobile-toggle {
  display: none;
  appearance: none;
  -webkit-appearance: none;
  margin: 0;
  padding: 0;
  border: none;
  background: transparent;
  cursor: pointer;
  font: inherit;
  color: inherit;
}

/* Nav: many links + CTA need hamburger before typical "tablet" width */
@media (max-width: 940px) {
  .nav-links {
    display: flex;
    flex-direction: column;
    position: fixed;
    inset: 0;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    margin: 0;
    list-style: none;
    background: color-mix(in srgb, var(--nav-mobile-bg) 78%, transparent);
    padding: calc(84px + env(safe-area-inset-top, 0px)) max(var(--page-gutter-x), env(safe-area-inset-right, 0px))
      calc(1.5rem + env(safe-area-inset-bottom, 0px)) max(var(--page-gutter-x), env(safe-area-inset-left, 0px));
    gap: 0;
    border-bottom: 0;
    backdrop-filter: blur(28px) saturate(1.2);
    -webkit-backdrop-filter: blur(28px) saturate(1.2);
    max-height: none;
    overflow: hidden;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    display: none;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: none;
    z-index: 10000;
    transition: none;
  }
  .nav-links.show {
    display: flex;
    gap: 1.15rem;
    animation: mobileMenuIn 0.22s ease-out;
  }
  .nav-links.closing {
    animation: mobileMenuOut 0.22s ease-in forwards;
    pointer-events: none;
  }
  .nav-links.show li,
  .nav-links.show a {
    width: 100%;
  }
  .nav-links.show li:last-child {
    margin-top: auto;
    padding-top: 1rem;
  }
  .nav-links.show a {
    text-align: left;
    font-size: 1rem;
    letter-spacing: 0.05em;
  }
  .nav-links.show .nav-cta {
    margin-top: 0.8rem;
    display: flex;
    justify-content: center;
    width: 100%;
    padding: 0.9rem 1.2rem;
    text-align: center;
    font-size: var(--fs-xs);
    border-radius: 999px;
  }
  .nav-mobile-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    color: var(--text-secondary);
    position: relative;
    z-index: 10002;
  }
  .nav-mobile-toggle-icon {
    position: relative;
    width: 20px;
    height: 14px;
    display: block;
  }
  .nav-mobile-toggle-icon span {
    position: absolute;
    left: 0;
    width: 100%;
    height: 2px;
    border-radius: 999px;
    background: currentColor;
    transition: transform 0.26s ease, opacity 0.2s ease, top 0.26s ease;
  }
  .nav-mobile-toggle-icon span:nth-child(1) {
    top: 0;
  }
  .nav-mobile-toggle-icon span:nth-child(2) {
    top: 6px;
  }
  .nav-mobile-toggle-icon span:nth-child(3) {
    top: 12px;
  }

  .nav.menu-open .nav-mobile-toggle-icon span:nth-child(1) {
    top: 6px;
    transform: rotate(45deg);
  }
  .nav.menu-open .nav-mobile-toggle-icon span:nth-child(2) {
    opacity: 0;
  }
  .nav.menu-open .nav-mobile-toggle-icon span:nth-child(3) {
    top: 6px;
    transform: rotate(-45deg);
  }

  @keyframes mobileMenuIn {
    from {
      opacity: 0;
      transform: translateY(-6px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
  @keyframes mobileMenuOut {
    from {
      opacity: 1;
      transform: translateY(0);
    }
    to {
      opacity: 0;
      transform: translateY(-6px);
    }
  }
}

@media (max-width: 940px) and (prefers-reduced-motion: reduce) {
  .nav-links {
    transition: none;
  }
}