/* ============================================================
   NAVBAR 2.0 — the site header, rebuilt.
   Loaded after final-overrides / theme-violet / hero-nav-experiment,
   so it is the last word on everything inside .header.

   Layout it expects (unchanged from before):
     .header > .wrap.nav > .brand | .nav-links | .nav-actions
   Mobile keeps the existing .nav.nav-open panel toggled by app.js.

   Revert by restoring this file from git — no other file depends on
   the classes added here except the markup in includes/layout_header.php.
   ============================================================ */

:root {
  --nav-h: 74px;
  --nav-h-tight: 62px;
  --nav-radius: 14px;
  --nav-ink: #364152;
  --nav-ink-strong: #0b1230;
  --nav-brand: #2c4699;
  --nav-brand-2: #4274d9;
  --nav-line: rgba(208, 216, 232, .8);
  --nav-surface: rgba(255, 255, 255, .82);
  --nav-tint: rgba(66, 116, 217, .09);
  --nav-grad: linear-gradient(135deg, #4274d9, #2c4699);
  --nav-shadow: 0 10px 30px rgba(16, 24, 40, .07);
  --nav-progress: 0;
}
body.theme-dark {
  --nav-ink: #c3cddf;
  --nav-ink-strong: #f4f7ff;
  --nav-line: rgba(58, 74, 122, .75);
  --nav-surface: rgba(12, 18, 42, .82);
  --nav-tint: rgba(102, 147, 224, .16);
  --nav-shadow: 0 10px 30px rgba(0, 0, 0, .35);
}

/* ── The bar ──────────────────────────────────────────────── */
.header {
  position: relative;
  border-bottom: 1px solid var(--nav-line) !important;
  background: var(--nav-surface) !important;
  -webkit-backdrop-filter: blur(20px) saturate(180%) !important;
  backdrop-filter: blur(20px) saturate(180%) !important;
  box-shadow: none !important;
  overflow: visible !important;
  transition: background-color .25s ease, box-shadow .25s ease, border-color .25s ease;
}
/* Sticky only on full desktop. At 1080px and below the menu collapses into
   an in-flow panel, and a sticky bar would fight it. */
@media (max-width: 1080px) {
  .header { position: relative !important; top: auto !important; z-index: 1000 !important; }
}
@media (min-width: 1081px) {
  .header { position: sticky !important; top: 0 !important; z-index: 900 !important; }
  .header.is-scrolled {
    background: rgba(255, 255, 255, .93) !important;
    box-shadow: var(--nav-shadow) !important;
  }
  body.theme-dark .header.is-scrolled { background: rgba(10, 15, 36, .93) !important; }
  .header.is-scrolled .nav { min-height: var(--nav-h-tight) !important; }
  .header.is-scrolled .brand-icon { width: 38px !important; height: 38px !important; }
  .header.is-scrolled .brand-icon img { width: 26px !important; height: 26px !important; }
  /* base.css hid the account buttons below 1024px while the hamburger only
     appears below 900px, leaving a band with no way to log in at all. */
  .nav-actions > a,
  .nav-actions > form { display: inline-flex !important; }
  .nav-actions > form { margin: 0 !important; }
  /* …and it let the links wrap onto a second row below 1024px. */
  .nav-links { grid-column: auto !important; order: 0 !important; }
  .nav-actions .btn.theme-toggle { display: inline-flex !important; }
}

/* Narrow desktop: tighten spacing before anything is allowed to wrap. */
@media (min-width: 1081px) and (max-width: 1180px) {
  .nav { gap: 10px !important; }
  .brand-title { font-size: 18px !important; }
  .brand-icon { width: 40px !important; height: 40px !important; }
  .nav-link { padding: 0 10px !important; font-size: 13.5px !important; }
  .nav-actions { gap: 6px !important; }
  .nav-actions .btn { padding: 0 12px !important; font-size: 13.5px !important; }
  .user-name { display: none; }
}

/* Reading-progress hairline welded to the bottom edge of the bar. */
.header::before {
  content: "";
  position: absolute;
  inset-inline: 0;
  bottom: -1px;
  height: 2px;
  z-index: 2;
  background: linear-gradient(90deg, #4274d9, #6693e0 45%, #2c4699);
  transform: scaleX(var(--nav-progress));
  transform-origin: left center;
  opacity: .95;
  pointer-events: none;
  transition: transform .12s linear;
}
[dir="rtl"] .header::before { transform-origin: right center; }
.header:after { display: none !important; }

/* hero-nav-experiment.css paints the home-page bar to match the hero.
   Same specificity, later file: the glass bar is now the whole site. */
body:has(.home-page) .header {
  background: var(--nav-surface) !important;
  border-bottom: 1px solid var(--nav-line) !important;
  -webkit-backdrop-filter: blur(20px) saturate(180%) !important;
  backdrop-filter: blur(20px) saturate(180%) !important;
}

.nav {
  display: grid !important;
  grid-template-columns: auto minmax(0, 1fr) auto !important;
  align-items: center !important;
  gap: 18px !important;
  min-height: var(--nav-h) !important;
  padding: 10px 0 !important;
  transition: min-height .25s ease;
}

/* ── Brand ────────────────────────────────────────────────── */
.brand {
  display: inline-flex !important;
  align-items: center !important;
  min-width: 0 !important;
  gap: 11px !important;
}
.brand-icon {
  position: relative;
  display: grid !important;
  place-items: center !important;
  width: 44px !important;
  height: 44px !important;
  padding: 0 !important;
  border: 1px solid var(--nav-line) !important;
  border-radius: var(--nav-radius) !important;
  background: linear-gradient(160deg, #fff, #eef4fc) !important;
  box-shadow: 0 6px 16px rgba(45, 81, 168, .12) !important;
  overflow: hidden;
  transition: transform .2s cubic-bezier(.2, .8, .3, 1), box-shadow .2s ease, width .25s ease, height .25s ease;
}
.brand-icon img { width: 30px !important; height: 30px !important; }
/* Sheen that sweeps across the tile on hover. */
.brand-icon::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(115deg, transparent 35%, rgba(255, 255, 255, .85) 50%, transparent 65%);
  transform: translateX(-120%);
  transition: transform .55s ease;
}
.brand:hover .brand-icon { transform: translateY(-2px) scale(1.03); box-shadow: 0 12px 24px rgba(45, 81, 168, .2) !important; }
.brand:hover .brand-icon::after { transform: translateX(120%); }
.brand-title {
  font-size: 21px !important;
  font-weight: 950 !important;
  letter-spacing: -.03em !important;
  color: var(--nav-ink-strong) !important;
  white-space: nowrap;
}
.brand-accent {
  background: linear-gradient(135deg, #3a67cf, #293681);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  /* .brand-title inherits a white text-shadow that would otherwise show
     straight through the transparent glyph fill. */
  text-shadow: none;
}
body.theme-dark .brand-accent { background: linear-gradient(135deg, #8ab0f0, #c9d9f7); -webkit-background-clip: text; background-clip: text; }

/* ── Links ────────────────────────────────────────────────── */
.nav-links {
  justify-self: center !important;
  display: inline-flex !important;
  align-items: center !important;
  gap: 2px !important;
  width: auto !important;
  max-width: 100% !important;
  padding: 0 !important;
  border: 0 !important;
  border-radius: 0 !important;
  background: transparent !important;
  box-shadow: none !important;
  -webkit-backdrop-filter: none !important;
  backdrop-filter: none !important;
  overflow: visible !important;
}
.nav-link {
  position: relative !important;
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  min-height: 40px !important;
  padding: 0 15px !important;
  border: 0 !important;
  border-radius: 11px !important;
  background: transparent !important;
  color: var(--nav-ink) !important;
  font-size: 14.5px !important;
  font-weight: 750 !important;
  letter-spacing: -.01em !important;
  line-height: 1 !important;
  white-space: nowrap !important;
  isolation: isolate;
  transition: color .18s ease !important;
}
.nav-link::before { display: none !important; }
/* Hover pill grows out of the centre instead of snapping in. */
.nav-link::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  border-radius: inherit;
  background: var(--nav-tint);
  opacity: 0;
  transform: scale(.86);
  transition: opacity .18s ease, transform .18s cubic-bezier(.2, .8, .3, 1);
}
.nav-link:hover { color: var(--nav-brand) !important; background: transparent !important; box-shadow: none !important; }
.nav-link:hover::after { opacity: 1; transform: scale(1); }
body.theme-dark .nav-link:hover { color: #bcd2f2 !important; }

.nav-link.active,
.nav-link[aria-current="page"] {
  color: #fff !important;
  background: transparent !important;
  box-shadow: none !important;
}
.nav-link.active::after,
.nav-link[aria-current="page"]::after {
  opacity: 1;
  transform: scale(1);
  background: var(--nav-grad);
  box-shadow: 0 8px 18px rgba(66, 116, 217, .3);
}
/* base.css keeps a dark active colour scoped as `.nav-links .nav-link.active`,
   which would leave dark text sitting on the gradient pill. */
.nav-links .nav-link.active,
.nav-links .nav-link[aria-current="page"],
body.theme-dark .nav-link.active,
body.theme-dark .nav-link[aria-current="page"],
body.theme-dark .nav-links .nav-link.active,
body.theme-dark .nav-links .nav-link[aria-current="page"] { color: #fff !important; background: transparent !important; }

/* ── Right-hand actions ───────────────────────────────────── */
.nav-actions {
  display: flex !important;
  align-items: center !important;
  justify-content: flex-end !important;
  gap: 8px !important;
  margin: 0 !important;
}
.nav-actions .btn {
  min-height: 40px !important;
  padding: 0 16px !important;
  border-radius: 11px !important;
  font-size: 14px !important;
  font-weight: 850 !important;
  line-height: 1 !important;
  white-space: nowrap !important;
  transition: transform .18s ease, box-shadow .2s ease, background-color .18s ease, color .18s ease, border-color .18s ease !important;
}
/* Quiet buttons: ghost until touched. */
.nav-actions .btn.outline {
  border: 1px solid transparent !important;
  background: transparent !important;
  color: var(--nav-ink) !important;
  box-shadow: none !important;
}
.nav-actions .btn.outline:hover {
  background: var(--nav-tint) !important;
  border-color: transparent !important;
  color: var(--nav-brand) !important;
}
body.theme-dark .nav-actions .btn.outline { border-color: transparent !important; background: transparent !important; }
body.theme-dark .nav-actions .btn.outline:hover { background: var(--nav-tint) !important; color: #bcd2f2 !important; }

/* The single loud call to action. */
.nav-actions .btn:not(.outline) {
  position: relative;
  overflow: hidden;
  border: 0 !important;
  background: var(--nav-grad) !important;
  color: #fff !important;
  box-shadow: 0 8px 20px rgba(66, 116, 217, .28) !important;
}
.nav-actions .btn:not(.outline)::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(115deg, transparent 35%, rgba(255, 255, 255, .38) 50%, transparent 65%);
  transform: translateX(-120%);
  transition: transform .6s ease;
}
.nav-actions .btn:not(.outline):hover {
  transform: translateY(-1px) !important;
  box-shadow: 0 12px 26px rgba(66, 116, 217, .36) !important;
}
.nav-actions .btn:not(.outline):hover::after { transform: translateX(120%); }

/* Icon buttons: theme + language */
.nav-actions .btn.theme-toggle {
  width: 40px !important;
  min-width: 40px !important;
  height: 40px !important;
  min-height: 40px !important;
  padding: 0 !important;
  border: 1px solid var(--nav-line) !important;
  border-radius: 11px !important;
  background: rgba(255, 255, 255, .6) !important;
  color: var(--nav-ink) !important;
  font-size: 16px !important;
}
.nav-actions .btn.theme-toggle:hover { background: var(--nav-tint) !important; border-color: transparent !important; }
.theme-toggle [data-theme-icon] { display: inline-block; transition: transform .4s cubic-bezier(.2, .8, .3, 1); }
.theme-toggle:hover [data-theme-icon] { transform: rotate(-25deg) scale(1.12); }
body.theme-dark .nav-actions .btn.theme-toggle { background: rgba(255, 255, 255, .05) !important; border-color: var(--nav-line) !important; }

.nav-actions .btn.lang-menu-toggle {
  gap: 7px !important;
  height: 40px !important;
  min-height: 40px !important;
  padding: 0 12px !important;
  border: 1px solid var(--nav-line) !important;
  border-radius: 11px !important;
  background: rgba(255, 255, 255, .6) !important;
  color: var(--nav-ink) !important;
  font-size: 13.5px !important;
  font-weight: 800 !important;
}
.nav-actions .btn.lang-menu-toggle:hover { background: var(--nav-tint) !important; border-color: transparent !important; color: var(--nav-brand) !important; }
body.theme-dark .nav-actions .btn.lang-menu-toggle { background: rgba(255, 255, 255, .05) !important; border-color: var(--nav-line) !important; }
.lang-caret { font-size: 12px !important; opacity: .6 !important; }
.lang-flag { border-radius: 3px; box-shadow: 0 0 0 1px rgba(16, 24, 40, .14); }

/* Dropdown panels share one look. */
.lang-menu-panel,
.user-menu-panel {
  animation: navPop .16s cubic-bezier(.2, .8, .3, 1) both;
  border-radius: var(--nav-radius) !important;
  box-shadow: 0 20px 44px rgba(16, 24, 40, .16) !important;
}
body.theme-dark .lang-menu-panel,
body.theme-dark .user-menu-panel { box-shadow: 0 20px 44px rgba(0, 0, 0, .5) !important; }
@keyframes navPop {
  from { opacity: 0; transform: translateY(-6px) scale(.97); }
  to   { opacity: 1; transform: none; }
}

/* ── Account menu ─────────────────────────────────────────── */
.user-menu { position: relative; display: inline-block; }
.user-menu > summary {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  height: 40px;
  padding: 0 10px 0 4px;
  border: 1px solid var(--nav-line);
  border-radius: 999px;
  background: rgba(255, 255, 255, .6);
  cursor: pointer;
  list-style: none;
  transition: background-color .18s ease, border-color .18s ease;
}
[dir="rtl"] .user-menu > summary { padding: 0 4px 0 10px; }
.user-menu > summary::-webkit-details-marker { display: none; }
.user-menu > summary::marker { content: ""; }
.user-menu > summary:hover { background: var(--nav-tint); border-color: transparent; }
body.theme-dark .user-menu > summary { background: rgba(255, 255, 255, .05); }
.user-avatar {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 999px;
  background: var(--nav-grad);
  color: #fff;
  font-size: 12.5px;
  font-weight: 950;
  letter-spacing: .02em;
  box-shadow: 0 4px 12px rgba(66, 116, 217, .32);
}
.user-name {
  max-width: 132px;
  overflow: hidden;
  color: var(--nav-ink-strong);
  font-size: 13.5px;
  font-weight: 800;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.user-menu-panel {
  position: absolute;
  top: calc(100% + 8px);
  inset-inline-end: 0;
  z-index: 1200;
  min-width: 236px;
  padding: 6px;
  border: 1px solid var(--nav-line);
  background: #fff;
}
body.theme-dark .user-menu-panel { background: #101a3d; }
.user-menu-head {
  display: grid;
  gap: 2px;
  padding: 10px 12px 12px;
  border-bottom: 1px solid var(--nav-line);
  margin-bottom: 6px;
  overflow: hidden;
}
.user-menu-head strong { color: var(--nav-ink-strong); font-size: 14px; font-weight: 900; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.user-menu-head span { color: #667085; font-size: 12px; font-weight: 700; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
body.theme-dark .user-menu-head span { color: #94a3b8; }
.user-menu-item {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  min-height: 40px;
  padding: 0 12px;
  border: 0;
  border-radius: 10px;
  background: transparent;
  color: var(--nav-ink);
  font-size: 13.5px;
  font-weight: 800;
  text-align: start;
  cursor: pointer;
}
.user-menu-item:hover { background: var(--nav-tint); color: var(--nav-brand); }
.user-menu-item.danger:hover { background: rgba(220, 38, 38, .09); color: #dc2626; }
body.theme-dark .user-menu-item:hover { color: #bcd2f2; }
.user-menu form { margin: 0; }

/* ── Mobile ───────────────────────────────────────────────── */
@media (max-width: 1080px) {
  /* brand | theme | burger on row 1, the panel on row 2. Placed explicitly
     because .nav-actions is hidden here and auto-placement would shuffle. */
  /* .wrap loses its side padding at this width, so the bar sets its own. */
  .nav {
    grid-template-columns: minmax(0, 1fr) auto auto !important;
    min-height: 66px !important;
    gap: 10px !important;
    padding-inline: 16px !important;
  }
  .brand { grid-column: 1 !important; grid-row: 1 !important; }
  .theme-mobile { grid-column: 2 !important; grid-row: 1 !important; }
  .nav-menu-toggle { grid-column: 3 !important; grid-row: 1 !important; }
  .nav-links { grid-row: 2 !important; }
  .brand-icon { width: 40px !important; height: 40px !important; }
  .brand-icon img { width: 28px !important; height: 28px !important; }
  .brand-title { font-size: 18px !important; }

  .nav-menu-toggle,
  .theme-mobile {
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    width: 42px !important;
    min-width: 42px !important;
    height: 42px !important;
    min-height: 42px !important;
    padding: 0 !important;
    border: 1px solid var(--nav-line) !important;
    border-radius: 12px !important;
    background: rgba(255, 255, 255, .65) !important;
    color: var(--nav-ink) !important;
  }
  body.theme-dark .nav-menu-toggle,
  body.theme-dark .theme-mobile { background: rgba(255, 255, 255, .06) !important; }
  .nav.nav-open .nav-menu-toggle { background: var(--nav-grad) !important; border-color: transparent !important; color: #fff !important; }

  /* The panel. Selector is deliberately three classes deep so it outranks
     the home-page `body:has(.home-page) .nav-links` transparency rule. */
  .header .nav .nav-links {
    grid-column: 1 / -1 !important;
    justify-self: stretch !important;
    position: static !important;
    display: none !important;
    width: 100% !important;
    max-height: none !important;
    margin: 6px 0 10px !important;
    padding: 8px !important;
    border: 1px solid var(--nav-line) !important;
    border-radius: 18px !important;
    background: rgba(255, 255, 255, .97) !important;
    box-shadow: 0 22px 46px rgba(16, 24, 40, .14) !important;
    -webkit-backdrop-filter: blur(18px) saturate(160%) !important;
    backdrop-filter: blur(18px) saturate(160%) !important;
  }
  body.theme-dark .header .nav .nav-links { background: rgba(16, 26, 61, .98) !important; box-shadow: 0 22px 46px rgba(0, 0, 0, .5) !important; }
  /* From tablet up the panel floats under the button as a real dropdown, so
     the bar keeps its height. Narrower phones keep the in-flow full-width
     sheet, which never covers the content underneath it. */
  @media (min-width: 641px) {
    .header .nav { position: relative !important; }
    .header .nav .nav-links {
      position: absolute !important;
      top: calc(100% + 6px) !important;
      inset-inline-end: 0 !important;
      z-index: 1200 !important;
      width: 360px !important;
      margin: 0 !important;
    }
  }
  .nav.nav-open .nav-links {
    display: grid !important;
    grid-template-columns: 1fr !important;
    gap: 3px !important;
    animation: navPanelIn .22s cubic-bezier(.2, .8, .3, 1) both;
  }
  @keyframes navPanelIn {
    from { opacity: 0; transform: translateY(-10px); }
    to   { opacity: 1; transform: none; }
  }
  .nav.nav-open .nav-links > * { animation: navItemIn .26s ease both; animation-delay: calc(var(--i, 0) * 28ms); }
  @keyframes navItemIn {
    from { opacity: 0; transform: translateY(-6px); }
    to   { opacity: 1; transform: none; }
  }

  .nav-links .nav-link,
  .nav-links .nav-mobile-actions .nav-link {
    justify-content: flex-start !important;
    width: 100% !important;
    min-height: 46px !important;
    padding: 0 14px !important;
    border-radius: 12px !important;
    font-size: 15px !important;
  }
  [dir="rtl"] .nav-links .nav-link { justify-content: flex-start !important; text-align: right !important; }

  .nav-mobile-actions {
    display: grid !important;
    gap: 4px !important;
    margin-top: 6px !important;
    padding-top: 8px !important;
    border-top: 1px solid var(--nav-line) !important;
  }
  .nav-mobile-actions form { margin: 0 !important; }
  .nav-action-button { width: 100% !important; justify-content: flex-start !important; text-align: start !important; }
  /* Register stays the highlighted action inside the panel too. */
  .nav-links .nav-mobile-actions a[href*="register"] {
    justify-content: center !important;
    margin-top: 4px !important;
    background: var(--nav-grad) !important;
    color: #fff !important;
    box-shadow: 0 8px 18px rgba(66, 116, 217, .28) !important;
  }
  .nav-mobile-actions a[href*="register"]::after { display: none !important; }
  .nav-mobile-user {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px 10px;
  }
  .nav-mobile-user .user-name { max-width: none; }
  .lang-menu--inline > summary { border-radius: 12px !important; }

  .nav-actions { display: none !important; }
  .mobile-menu { display: none !important; }

  /* Dim the page behind an open menu. */
  .nav-scrim {
    position: fixed;
    inset: 0;
    z-index: 40;
    display: none;
    background: rgba(11, 18, 48, .38);
    -webkit-backdrop-filter: blur(2px);
    backdrop-filter: blur(2px);
    animation: navFade .2s ease both;
  }
  body:has(.nav.nav-open) .nav-scrim { display: block; }
  @keyframes navFade { from { opacity: 0; } to { opacity: 1; } }
}

/* ── Hamburger ────────────────────────────────────────────── */
.nav-burger { position: relative; display: block; width: 18px; height: 12px; }
.nav-burger span {
  position: absolute;
  inset-inline: 0;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: transform .26s cubic-bezier(.2, .8, .3, 1), opacity .18s ease, top .26s ease;
}
.nav-burger span:nth-child(1) { top: 0; }
.nav-burger span:nth-child(2) { top: 5px; }
.nav-burger span:nth-child(3) { top: 10px; }
.nav.nav-open .nav-burger span:nth-child(1) { top: 5px; transform: rotate(45deg); }
.nav.nav-open .nav-burger span:nth-child(2) { opacity: 0; transform: scaleX(.4); }
.nav.nav-open .nav-burger span:nth-child(3) { top: 5px; transform: rotate(-45deg); }

/* ── Focus + motion ───────────────────────────────────────── */
.header a:focus-visible,
.header button:focus-visible,
.header summary:focus-visible {
  outline: 2px solid var(--nav-brand-2) !important;
  outline-offset: 2px !important;
}
@media (prefers-reduced-motion: reduce) {
  .header, .header *, .header *::after, .header *::before {
    transition: none !important;
    animation: none !important;
  }
  .nav-actions .btn:not(.outline):hover,
  .brand:hover .brand-icon { transform: none !important; }
}