/* =============================================================
   ALAQAAR — SPLIT FLOATING HEADER + NIGHT MODE (redesign phase 1)
   Three separate pills on one row: logo (start) · links (centered) · tools (end).
   The row mirrors in Arabic by itself (flex follows dir). Ported from the
   "split floating navigation" and "night mode" blocks of
   docs/redesign/alaqaar-home-reference.html. Markup: Pages/Shared/_Header.cshtml,
   behaviour: wwwroot/js/nav.js. Glass state = .is-scrolled (set by nav.js after the hero,
   and server-side on every page without a hero). No shimmer/pulse animations.
   ============================================================= */

.site-navbar {
  position: fixed;
  z-index: 210;
  inset-block-start: calc(env(safe-area-inset-top, 0px) + 14px);
  inset-inline: 0;
  padding-inline: clamp(12px, 2.4vw, 34px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  pointer-events: none;
  transition: inset-block-start 0.35s, opacity 0.5s;
}
.site-navbar.is-scrolled { inset-block-start: calc(env(safe-area-inset-top, 0px) + 10px); }
.nb {
  pointer-events: auto;
  border-radius: 999px;
  border: 1px solid transparent;
  transition: background 0.45s, border-color 0.45s, box-shadow 0.45s;
}
/* Over the hero: no bars, only the items. */
.site-navbar:not(.is-scrolled):not(.open) .nb { background: transparent; box-shadow: none; }

/* After the hero (and everywhere without a hero): ivory glass. */
.is-scrolled .nb-brand,
.is-scrolled .nb-tools,
.site-navbar.open .nb-brand,
.site-navbar.open .nb-tools,
.is-scrolled nav.links {
  background: linear-gradient(180deg, rgba(255,255,255,.55), rgba(255,255,255,.2)), rgba(247,240,232,.72);
  border: 1px solid rgba(178,138,80,.6);
  -webkit-backdrop-filter: blur(16px) saturate(1.3);
  backdrop-filter: blur(16px) saturate(1.3);
  box-shadow: 0 8px 22px rgba(120,95,70,.14), inset 0 1px 0 rgba(255,255,255,.85);
}

/* Logo pill. Cream logo over the hero / in night mode, navy logo on ivory glass. */
.nb-brand { display: inline-flex; align-items: center; padding: 0.5rem 1.15rem; flex-shrink: 0; }
.nb-brand img { height: 38px; width: auto; display: block; filter: drop-shadow(0 1px 4px rgba(0,0,0,.45)); }
.nb-brand .logo-dark { display: none; filter: none; }
.is-scrolled .nb-brand .logo-light,
.site-navbar.open .nb-brand .logo-light { display: none; }
.is-scrolled .nb-brand .logo-dark,
.site-navbar.open .nb-brand .logo-dark { display: block; }

/* Links pill, centred on the bar. left:50% is physical on purpose: the pill is
   centred in both directions (only its contents mirror). */
.links {
  position: absolute;
  left: 50%;
  translate: -50% 0;
  display: flex;
  align-items: center;
  gap: 0;
  padding: 0.22rem;
}
.links .pill {
  position: absolute;
  z-index: 0;
  top: 0.22rem;
  bottom: 0.22rem;
  left: 0;
  width: 0;
  border-radius: 999px;
  opacity: 0;
  background: linear-gradient(180deg, #d6b077 0%, #b28a50 60%, #9c763f 100%);
  box-shadow: 0 4px 12px rgba(178,138,80,.35), inset 0 1px 0 rgba(255,240,210,.5);
  transition: left 0.5s cubic-bezier(.34,1.45,.64,1), width 0.5s cubic-bezier(.34,1.45,.64,1), opacity 0.3s;
}
.links a {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.48rem 0.62rem;
  border-radius: 999px;
  white-space: nowrap;
  font-family: 'Jost', var(--font-body);
  font-weight: 700;
  font-size: clamp(0.74rem, 0.5rem + 0.3vw, 0.84rem);
  letter-spacing: 0.03em;
  text-transform: none;
  color: rgba(255,255,255,.9);
  text-shadow: 0 1px 6px rgba(0,0,0,.5);
  transition: color 0.3s;
}
[dir="rtl"] .links a { font-family: var(--font-body); letter-spacing: 0; font-size: clamp(0.8rem, 0.5rem + 0.4vw, 0.95rem); }
.links a .icon { width: 0.85rem; height: 0.85rem; stroke-width: 1.7; opacity: .75; }
.links a:hover { color: #fff; }
.links a.on, .is-scrolled .links a.on { color: #1c1a17; text-shadow: none; }
.is-scrolled .links a { color: var(--ink); text-shadow: none; }
.is-scrolled .links a:hover { color: var(--gold-dark); }
.is-scrolled .links a.on:hover { color: #1c1a17; }

/* Tools pill: search · language · night mode · (burger). */
.nb-tools { display: flex; align-items: center; gap: 0.35rem; padding: 0.32rem; flex-shrink: 0; }
.tbtn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  height: 2.5rem;
  min-width: 2.5rem;
  padding: 0;
  border-radius: 999px;
  cursor: pointer;
  color: #fff;
  background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.3);
  box-shadow: 0 2px 10px rgba(0,0,0,.22);
  transition: background 0.25s, color 0.25s, border-color 0.25s, box-shadow 0.25s;
}
.tbtn .icon { width: 1.05rem; height: 1.05rem; stroke-width: 2; }
.tbtn.lang { padding: 0 0.95rem; font: 600 0.82rem var(--font-body); }
.tbtn:hover { background: rgba(255,255,255,.22); }
.is-scrolled .tbtn, .site-navbar.open .tbtn {
  color: var(--ink);
  background: rgba(255,255,255,.55);
  border-color: rgba(178,138,80,.35);
  box-shadow: none;
  text-shadow: none;
}
.is-scrolled .tbtn:hover, .tbtn[aria-expanded="true"] { background: var(--gold); color: #1c1a17; border-color: var(--gold); }
.tbtn:focus-visible, .links a:focus-visible, .nb-brand:focus-visible, .mt-btn:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; }

.sun { display: none; }
html[data-mode="dark"] .moon { display: none; }
html[data-mode="dark"] .sun { display: block; }

.burger { display: none; flex-direction: column; gap: 4px; }
.burger i { display: block; width: 1.15rem; height: 2px; border-radius: 2px; background: var(--gold-light); transition: transform 0.3s, opacity 0.3s; }
.is-scrolled .burger i { background: var(--gold-dark); }
.site-navbar.open .burger i:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.site-navbar.open .burger i:nth-child(2) { opacity: 0; }
.site-navbar.open .burger i:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* Home page: the header stays hidden while the entrance doors are closed (JS only). */
/* Only the tools pill (search / language / night mode) stays usable over the closed doors, so a visitor
   can switch language right away and read the door words in Arabic. Logo, links and burger fade in later. */
.js .site-navbar.doors-closed .nb-brand,
.js .site-navbar.doors-closed:not(.open) .links { opacity: 0; pointer-events: none; visibility: hidden; }
/* The burger and the night-mode button stay visible next to the language button, so they are reachable from the start. */
/* Over the cream facade the tool buttons wear the same look as the AI assistant button (navy fill, cream icon, gold border),
   so they read clearly; once the door opens they return to the translucent-white style above. Night mode keeps the same look. */
.js .site-navbar.doors-closed:not(.is-scrolled):not(.open) .tbtn {
  color: #e8cf9f;
  background: linear-gradient(180deg, #5b636d 0%, #474e56 55%, #363b41 100%);
  border-color: #b28a50;
  box-shadow: 0 10px 24px rgba(0,0,0,.28);
}
.js .site-navbar.doors-closed:not(.is-scrolled):not(.open) .tbtn:hover,
.js .site-navbar.doors-closed:not(.is-scrolled):not(.open) .tbtn[aria-expanded="true"] {
  color: #f6e6c4;
  background: linear-gradient(180deg, #69727d 0%, #525a63 55%, #3f454c 100%);
  border-color: #d0aa6e;
}

/* Site-wide search panel, hanging under the bar. */
.navbar-search-panel {
  position: absolute;
  inset-block-start: calc(100% + 10px);
  inset-inline: clamp(12px, 2.4vw, 34px);
  max-width: 640px;
  margin-inline: auto;
  padding: 0.5rem;
  border-radius: 999px;
  background: linear-gradient(180deg, rgba(255,255,255,.6), rgba(255,255,255,.3)), rgba(247,240,232,.9);
  border: 1px solid rgba(178,138,80,.55);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  box-shadow: 0 18px 40px rgba(0,0,0,.25);
  transform: translateY(-8px);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition), transform var(--transition);
}
.navbar-search-panel.is-open { opacity: 1; transform: translateY(0); pointer-events: auto; }
.navbar-search-panel__form { display: flex; gap: 0.5rem; }
.navbar-search-panel__input {
  flex: 1;
  min-width: 0;
  padding: 0.65rem 1.1rem;
  border-radius: 999px;
  border: 0;
  background: transparent;
  color: var(--ink);
  font-size: 1rem;
}
.navbar-search-panel__input:focus { outline: none; }
.navbar-search-panel__input::placeholder { color: var(--muted); opacity: .8; }
.navbar-search-panel__submit {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.6rem;
  height: 2.6rem;
  border-radius: 50%;
  background: linear-gradient(180deg, #d6b077, #b28a50);
  color: #1c1a17;
  border: 0;
  cursor: pointer;
}

/* Phone-menu extras (search + night mode buttons) exist only inside the dropdown. */
.menu-tools { display: none; }

/* Page content starts below the floating header on every page except the home hero. */
.site-main { padding-block-start: var(--navbar-height); }
.has-hero .site-main { padding-block-start: 0; }

@media (max-width: 1440px) { .links a .icon { display: none; } }
@media (max-width: 1240px) {
  .links a { padding: 0.45rem 0.5rem; letter-spacing: 0.02em; }
  .nb-brand img { height: 32px; }
  .nb-brand { padding: 0.45rem 0.9rem; }
}

/* Phones and tablets: the links pill becomes a dropdown under the bar, opened by the burger. */
@media (max-width: 1100px) {
  .burger { display: inline-flex; }
  .links {
    top: calc(100% + 10px);
    left: clamp(12px, 2.4vw, 34px);
    right: clamp(12px, 2.4vw, 34px);
    translate: none;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0.15rem;
    padding: 0.5rem;
    border-radius: 1.4rem;
  }
  .site-navbar.open .links {
    display: flex;
    background: linear-gradient(180deg, rgba(255,255,255,.6), rgba(255,255,255,.3)), rgba(247,240,232,.9);
    border-color: rgba(178,138,80,.55);
    -webkit-backdrop-filter: blur(16px);
    backdrop-filter: blur(16px);
    box-shadow: 0 18px 40px rgba(0,0,0,.3);
  }
  .links .pill { display: none; }
  .links a, .is-scrolled .links a { justify-content: flex-start; padding: 0.85rem 1rem; font-size: 0.95rem; color: var(--ink); text-shadow: none; }
  .links a .icon { display: inline-block; }
  .links a.on, .is-scrolled .links a.on { background: linear-gradient(180deg, #d6b077, #b28a50); color: #1c1a17; }
  .tsearch { display: none; }
  .menu-tools [data-mode-toggle] { display: none; }   /* night mode now lives in the tools pill on phones */
  .menu-tools { display: flex; gap: 0.5rem; padding: 0.6rem 0.4rem 0.2rem; margin-top: 0.3rem; border-top: 1px solid rgba(178,138,80,.3); }
  .mt-btn {
    flex: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem;
    border-radius: 999px;
    border: 1px solid rgba(178,138,80,.45);
    background: transparent;
    color: var(--ink);
    font: 600 0.85rem var(--font-body);
    cursor: pointer;
  }
  .mt-btn .icon { width: 1rem; height: 1rem; }
  .navbar-search-panel { inset-inline: 12px; }
}
@media (max-width: 575.98px) {
  .site-navbar { padding-inline: 10px; gap: 0.4rem; }
  .nb-brand img { height: 22px; }
  .nb-brand { padding: 0.45rem 0.6rem; }
  .nb-tools { gap: 0.2rem; padding: 0.25rem; }
  .tbtn { height: 2.1rem; min-width: 2.1rem; }
  .tbtn .icon { width: 0.95rem; height: 0.95rem; }
  .tbtn.lang { padding: 0 0.5rem; font-size: 0.74rem; }
}

/* Anchors never land under the floating header. */
section[id] { scroll-margin-top: calc(var(--navbar-height) + 24px); }
.skip-link:focus { top: 0.5rem; }

/* ---------- night mode (toggle in the tools pill) ---------- */
html[data-mode="dark"] {
  --nm-bg: #262e36; --nm-hi: #313b45; --nm-lo: #171c21;
  --ink: #efe4da; --muted: #b9ad9f;
  color-scheme: dark;
}
/* Navy glass pills + the cream logo. */
html[data-mode="dark"] .is-scrolled .nb-brand,
html[data-mode="dark"] .is-scrolled .nb-tools,
html[data-mode="dark"] .site-navbar.open .nb-brand,
html[data-mode="dark"] .site-navbar.open .nb-tools,
html[data-mode="dark"] .is-scrolled nav.links {
  background: linear-gradient(180deg, rgba(255,255,255,.08), rgba(255,255,255,0)), rgba(35,45,54,.58);
  box-shadow: 0 14px 30px rgba(0,0,0,.3), inset 0 1px 0 rgba(255,255,255,.14);
}
html[data-mode="dark"] .is-scrolled .nb-brand .logo-light,
html[data-mode="dark"] .site-navbar.open .nb-brand .logo-light { display: block; filter: none; }
html[data-mode="dark"] .is-scrolled .nb-brand .logo-dark,
html[data-mode="dark"] .site-navbar.open .nb-brand .logo-dark { display: none; }
html[data-mode="dark"] .is-scrolled .links a { color: rgba(235,221,212,.82); }
html[data-mode="dark"] .is-scrolled .links a:hover { color: #fff; }
html[data-mode="dark"] .is-scrolled .links a.on { color: #1c1a17; }
html[data-mode="dark"] .is-scrolled .tbtn,
html[data-mode="dark"] .site-navbar.open .tbtn { color: #efe4da; background: rgba(255,255,255,.08); border-color: rgba(178,138,80,.45); }
html[data-mode="dark"] .is-scrolled .tbtn:hover,
html[data-mode="dark"] .tbtn[aria-expanded="true"] { background: var(--gold); color: #1c1a17; border-color: var(--gold); }
html[data-mode="dark"] .burger i, html[data-mode="dark"] .is-scrolled .burger i { background: var(--gold-light); }
html[data-mode="dark"] .navbar-search-panel,
html[data-mode="dark"] .site-navbar.open .links {
  background: linear-gradient(180deg, rgba(255,255,255,.08), rgba(255,255,255,0)), rgba(35,45,54,.9);
}
html[data-mode="dark"] .links a, html[data-mode="dark"] .is-scrolled .links a { color: rgba(235,221,212,.9); }
html[data-mode="dark"] .links a.on, html[data-mode="dark"] .is-scrolled .links a.on { color: #1c1a17; }
html[data-mode="dark"] .mt-btn { color: #efe4da; }

@media (prefers-reduced-motion: reduce) {
  .site-navbar, .nb, .links .pill { transition: none; }
}