/*
 * Site navigation.
 *
 *  - Top of the page ......... light bar: wordmark, primary links, account.
 *  - Scrolled, laptop/desktop . the bar morphs into a floating dark dock (bigger targets on touch screens).
 *  - Scrolled, phone ......... slim top bar hides on scroll-down; a thumb-reach tab bar rises from the bottom,
 *                              and "Menu" opens a bottom sheet.
 *
 * Layout never shifts: the header keeps a fixed height, so condensing only changes what is drawn.
 * Breakpoint (1024px) matches Tailwind `lg` and public/js/nav-state.js.
 */

:root {
  --nav-h: 56px;
  --nav-ink: #0f172a;
  --nav-text: #334155;
  --nav-muted: #64748b;
  --nav-line: #e5e7eb;
  --nav-accent: #2563eb;
  --nav-accent-soft: #eff6ff;
  --nav-ease: cubic-bezier(0.2, 0.8, 0.2, 1);
}
@media (min-width: 1024px) {
  :root { --nav-h: 64px; }
}

[x-cloak] { display: none !important; }
html.site-nav-locked { overflow: hidden; }

/* Keep content clear of the phone tab bar. */
@media (max-width: 1023.98px) {
  body { padding-bottom: calc(68px + env(safe-area-inset-bottom)); }
}

.site-nav__skip {
  position: absolute; left: -9999px; top: 8px; z-index: 100;
  background: var(--nav-ink); color: #fff; padding: 0.625rem 1rem; border-radius: 0.5rem; font-weight: 600; font-size: 0.875rem;
}
.site-nav__skip:focus { left: 12px; }

/* ---------- Header shell ---------- */
.site-nav {
  position: sticky; top: 0; z-index: 50;
  height: var(--nav-h);
  pointer-events: none;          /* the shell only reserves space; each child opts back in */
}
.site-nav > * { pointer-events: auto; }

.site-nav :focus-visible { outline: 2px solid var(--nav-accent); outline-offset: 2px; }

/* ---------- Top bar ---------- */
.site-nav__bar {
  position: absolute; inset: 0;
  background: rgba(255, 255, 255, 0.9);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid var(--nav-line);
  transition: transform 0.35s var(--nav-ease), opacity 0.25s ease, box-shadow 0.25s ease;
  will-change: transform;
}
.site-nav[data-condensed="true"] .site-nav__bar { box-shadow: 0 10px 24px -16px rgba(15, 23, 42, 0.35); }

/* Phone: slide the slim bar away while scrolling down, bring it back on any upward scroll. */
.site-nav[data-hidden="true"] .site-nav__bar { transform: translateY(-101%); box-shadow: none; }

/* Laptop/desktop: the bar gives way to the dock. */
@media (min-width: 1024px) {
  .site-nav[data-condensed="true"] .site-nav__bar { transform: translateY(-101%); opacity: 0; box-shadow: none; }
}

.site-nav__brand {
  display: inline-flex; align-items: center; gap: 0.625rem; min-height: 44px; flex-shrink: 0; white-space: nowrap;
  font-size: 1.125rem; font-weight: 650; letter-spacing: -0.015em; color: var(--nav-ink); text-decoration: none;
}

.site-nav__link {
  position: relative; min-height: 40px; padding: 0 0.75rem;   /* display comes from utilities in the markup, so hidden/md: still apply */
  font-size: 0.875rem; font-weight: 500; color: var(--nav-text); text-decoration: none; border-radius: 0.5rem; white-space: nowrap;
  transition: color 0.15s ease, background-color 0.15s ease;
}
.site-nav__link.is-active { color: var(--nav-ink); font-weight: 600; }
.site-nav__link.is-active::after {
  content: ""; position: absolute; left: 0.75rem; right: 0.75rem; bottom: 3px; height: 2px; border-radius: 2px; background: var(--nav-accent);
}
@media (hover: hover) {
  .site-nav__link:hover { color: var(--nav-ink); background: #f1f5f9; }
}

.site-nav__icon-btn {
  height: 40px; width: 40px; border-radius: 0.625rem;   /* display comes from utilities in the markup */
  color: var(--nav-text); background: transparent; border: 0; cursor: pointer; text-decoration: none;
  transition: color 0.15s ease, background-color 0.15s ease; -webkit-tap-highlight-color: transparent;
}
.site-nav__icon-btn.is-active { color: var(--nav-accent); background: var(--nav-accent-soft); }
.site-nav__icon-btn:active { background: #e2e8f0; }
@media (hover: hover) {
  .site-nav__icon-btn:hover { color: var(--nav-ink); background: #f1f5f9; }
}

.site-nav__badge {
  position: absolute; top: -4px; right: -4px; min-width: 18px; height: 18px; padding: 0 4px; display: inline-flex; align-items: center; justify-content: center;
  border-radius: 9999px; background: var(--nav-accent); color: #fff; font-size: 10px; font-weight: 700; line-height: 1; box-shadow: 0 0 0 2px #fff;
}

/* ---------- Account menu ---------- */
.site-nav__account {
  display: inline-flex; align-items: center; gap: 0.5rem; height: 40px; max-width: 240px; padding: 0 0.625rem 0 0.25rem;
  background: #fff; border: 1px solid var(--nav-line); border-radius: 9999px; color: var(--nav-text);
  font-size: 0.875rem; font-weight: 500; cursor: pointer; -webkit-tap-highlight-color: transparent;
  transition: border-color 0.15s ease, background-color 0.15s ease;
}
@media (hover: hover) {
  .site-nav__account:hover { border-color: #cbd5e1; background: #f8fafc; }
}
.site-nav__account-name { min-width: 0; max-width: 9rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
@media (max-width: 1279.98px) { .site-nav__account-name { display: none; } .site-nav__account { padding-right: 0.5rem; } }
.site-nav__avatar {
  display: inline-flex; align-items: center; justify-content: center; height: 32px; width: 32px; flex-shrink: 0; border-radius: 9999px;
  background: linear-gradient(135deg, #e2e8f0, #cbd5e1); color: #334155; font-size: 0.75rem; font-weight: 700;
}
.site-nav__account--dark { background: rgba(255, 255, 255, 0.06); border-color: rgba(255, 255, 255, 0.14); color: #e2e8f0; }
.site-nav__account--dark .site-nav__avatar { background: rgba(255, 255, 255, 0.16); color: #fff; }
@media (hover: hover) {
  .site-nav__account--dark:hover { background: rgba(255, 255, 255, 0.12); border-color: rgba(255, 255, 255, 0.24); }
}

.site-nav__menu {
  position: absolute; right: 0; top: calc(100% + 0.5rem); z-index: 60; min-width: 15rem; padding: 0.375rem;
  background: #fff; border: 1px solid var(--nav-line); border-radius: 0.875rem; box-shadow: 0 18px 40px -14px rgba(15, 23, 42, 0.3);
}
.site-nav__menu-item {
  display: flex; align-items: center; gap: 0.625rem; min-height: 44px; padding: 0 0.75rem; border-radius: 0.5rem;
  font-size: 0.875rem; font-weight: 500; color: var(--nav-text); text-decoration: none; background: transparent; border: 0; cursor: pointer;
}
@media (hover: hover) {
  .site-nav__menu-item:hover { background: #f1f5f9; color: var(--nav-ink); }
}

/* ---------- Dock (laptop/desktop, scrolled) ---------- */
.site-nav__dock-wrap { display: none; }
@media (min-width: 1024px) {
  .site-nav__dock-wrap {
    display: flex; justify-content: center; position: absolute; left: 0; right: 0; top: 0.625rem; pointer-events: none; padding: 0 1rem;
  }
}
.site-nav__dock {
  pointer-events: auto; display: flex; align-items: center; gap: 0.25rem; max-width: 100%; padding: 0.375rem;
  background: rgba(15, 23, 42, 0.92); color: #e2e8f0;
  -webkit-backdrop-filter: saturate(150%) blur(16px); backdrop-filter: saturate(150%) blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.09); border-radius: 9999px;
  box-shadow: 0 18px 40px -14px rgba(15, 23, 42, 0.55), 0 2px 6px rgba(15, 23, 42, 0.2);
  transform: translateY(-160%) scale(0.96); opacity: 0; visibility: hidden;
  transition: transform 0.4s var(--nav-ease), opacity 0.25s ease, visibility 0s linear 0.4s;
}
.site-nav[data-condensed="true"] .site-nav__dock { transform: none; opacity: 1; visibility: visible; transition-delay: 0s; }

.site-nav__dock-brand { display: inline-flex; align-items: center; justify-content: center; height: 40px; width: 40px; border-radius: 9999px; }
.site-nav__dock-brand img { border-radius: 0.5rem; box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.16); }
.site-nav__dock-sep { height: 20px; width: 1px; margin: 0 0.25rem; background: rgba(255, 255, 255, 0.16); flex-shrink: 0; }
.site-nav__dock-link {
  display: inline-flex; align-items: center; min-height: 40px; padding: 0 0.875rem; border-radius: 9999px; white-space: nowrap;
  font-size: 0.875rem; font-weight: 500; color: rgba(226, 232, 240, 0.86); text-decoration: none;
  transition: color 0.15s ease, background-color 0.15s ease;
}
.site-nav__dock-link.is-active, .site-nav__dock-icon.is-active { color: #fff; background: rgba(255, 255, 255, 0.14); }
@media (hover: hover) {
  .site-nav__dock-link:hover, .site-nav__dock-icon:hover, .site-nav__dock-brand:hover { color: #fff; background: rgba(255, 255, 255, 0.09); }
}
.site-nav__dock-icon {
  display: inline-flex; align-items: center; justify-content: center; height: 40px; width: 40px; border-radius: 9999px;
  color: rgba(226, 232, 240, 0.86); text-decoration: none; position: relative;
}
.site-nav__dock-cta {
  display: inline-flex; align-items: center; min-height: 40px; padding: 0 1rem; border-radius: 9999px; background: #fff; color: var(--nav-ink);
  font-size: 0.875rem; font-weight: 600; text-decoration: none; white-space: nowrap;
}
.site-nav__dock .site-nav__badge { box-shadow: 0 0 0 2px #0f172a; }
.site-nav__dock :focus-visible { outline-color: #93c5fd; }
.site-nav__dock .site-nav__menu { right: 0; }

/* Touch screens (including touch laptops): at least 48px targets, a little more breathing room. */
@media (min-width: 1024px) and (any-pointer: coarse) {
  .site-nav__dock-wrap { top: 0.5rem; }
  .site-nav__dock { gap: 0.375rem; padding: 0.5rem; }
  .site-nav__dock-link, .site-nav__dock-cta { min-height: 48px; padding: 0 1.125rem; }
  .site-nav__dock-icon, .site-nav__dock-brand { height: 48px; width: 48px; }
  .site-nav__dock .site-nav__account { height: 48px; }
  .site-nav__link { min-height: 44px; }
  .site-nav__icon-btn { height: 44px; width: 44px; }
  .site-nav__account { height: 44px; }
  .site-nav__menu-item { min-height: 48px; }
}
@media (max-width: 1023.98px) {
  .site-nav__icon-btn { height: 44px; width: 44px; }
}

/* ---------- Tab bar (phones, scrolled) ---------- */
.site-nav__tabbar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 50; padding-bottom: env(safe-area-inset-bottom);
  background: rgba(255, 255, 255, 0.95); -webkit-backdrop-filter: saturate(160%) blur(14px); backdrop-filter: saturate(160%) blur(14px);
  border-top: 1px solid var(--nav-line); box-shadow: 0 -10px 30px -18px rgba(15, 23, 42, 0.35);
  transform: translateY(100%); visibility: hidden;
  transition: transform 0.4s var(--nav-ease), visibility 0s linear 0.4s;
}
.site-nav[data-condensed="true"] .site-nav__tabbar { transform: none; visibility: visible; transition-delay: 0s; }
@media (min-width: 1024px) { .site-nav__tabbar { display: none; } }

.site-nav__tabs { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); margin: 0; padding: 0 0.25rem; list-style: none; }
.site-nav__tab {
  position: relative; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 3px; width: 100%; min-height: 60px;
  padding: 6px 2px; background: transparent; border: 0; border-radius: 0.75rem; cursor: pointer;
  font-size: 11px; font-weight: 600; letter-spacing: 0.01em; color: #475569; text-decoration: none; -webkit-tap-highlight-color: transparent;
}
.site-nav__tab:active { background: #f1f5f9; }
.site-nav__tab.is-active { color: var(--nav-accent); }
.site-nav__tab.is-active::before {
  content: ""; position: absolute; top: 0; left: 50%; width: 28px; height: 3px; margin-left: -14px; border-radius: 0 0 3px 3px; background: var(--nav-accent);
}

/* ---------- Menu sheet (phones) ---------- */
.site-nav__sheet-root { position: fixed; inset: 0; z-index: 70; display: flex; align-items: flex-end; pointer-events: auto; }
.site-nav__backdrop { position: absolute; inset: 0; background: rgba(15, 23, 42, 0.5); }
.site-nav__sheet {
  position: relative; width: 100%; max-height: 88vh; max-height: 88dvh; overflow-y: auto; overscroll-behavior: contain; outline: none;
  background: #fff; border-radius: 1.25rem 1.25rem 0 0; box-shadow: 0 -20px 50px -20px rgba(15, 23, 42, 0.5);
  padding-bottom: calc(1rem + env(safe-area-inset-bottom));
}
.site-nav__sheet-head { position: sticky; top: 0; z-index: 1; display: flex; align-items: center; justify-content: flex-end; min-height: 56px; padding: 0.5rem 0.75rem 0; background: #fff; }
.site-nav__grab { position: absolute; left: 50%; top: 10px; width: 40px; height: 4px; margin-left: -20px; border-radius: 4px; background: #cbd5e1; }
.site-nav__sheet-body { padding: 0 0.75rem 0.5rem; }
.site-nav__sheet-link {
  display: flex; align-items: center; justify-content: space-between; gap: 0.75rem; min-height: 52px; padding: 0 1rem; border-radius: 0.75rem;
  font-size: 1rem; font-weight: 500; color: var(--nav-ink); text-decoration: none; background: transparent; border: 0; cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}
.site-nav__sheet-link:active { background: #f1f5f9; }
.site-nav__sheet-link.is-active { background: var(--nav-accent-soft); color: var(--nav-accent); font-weight: 600; }
.site-nav__sheet-enter { transition: transform 0.32s var(--nav-ease); }
.site-nav__sheet-from { transform: translateY(100%); }
.site-nav__sheet-to { transform: translateY(0); }

/* ---------- Motion preferences & print ---------- */
@media (prefers-reduced-motion: reduce) {
  .site-nav__bar, .site-nav__dock, .site-nav__tabbar, .site-nav__sheet, .site-nav__link, .site-nav__icon-btn, .site-nav__account,
  .site-nav__dock-link { transition: none !important; }
}
@media print {
  .site-nav, .site-nav__tabbar, .site-nav__skip { display: none !important; }
}