/* Shared chrome — nav, language toggle, footer, etc. */

/* ---------- Language toggle ---------- */
.lang-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: var(--t-xs);
  letter-spacing: 0.08em;
  color: var(--fg-muted);
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: var(--r-pill);
  background: var(--bg-elevated);
}
.lang-toggle button {
  background: none;
  border: none;
  padding: 0;
  font: inherit;
  letter-spacing: inherit;
  color: var(--fg-muted);
  cursor: pointer;
  opacity: 0.55;
  transition: opacity 120ms;
}
.lang-toggle button.on {
  color: var(--fg);
  opacity: 1;
  font-weight: 700;
}
.lang-toggle .lang-divider { opacity: 0.35; }

/* ---------- Theme toggle ---------- */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--r-pill);
  color: var(--fg-muted);
  cursor: pointer;
  transition: color 120ms, border-color 120ms, background 120ms, transform 120ms;
  padding: 0;
}
.theme-toggle:hover {
  color: var(--fg);
  border-color: var(--fg-soft);
  transform: translateY(-1px);
}
.theme-toggle svg { display: block; }

/* ---------- Nav ---------- */
.musca-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  gap: var(--s-6);
  padding: var(--s-4) var(--gutter);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-soft);
}
.musca-nav .logo { display: flex; align-items: center; color: var(--fg); }
.musca-nav .nav-links {
  display: flex;
  align-items: center;
  gap: var(--s-5);
  margin-left: var(--s-6);
  flex: 1;
}
.musca-nav .nav-links a {
  font-size: var(--t-sm);
  color: var(--fg-muted);
  transition: color 120ms;
}
.musca-nav .nav-links a:hover { color: var(--fg); }
.musca-nav .nav-actions { display: flex; align-items: center; gap: var(--s-3); }

/* ---------- Nav dropdown ---------- */
.nav-dropdown {
  position: relative;
  display: inline-flex;
  align-items: center;
}
.nav-dropdown-trigger {
  display: inline-flex !important;
  align-items: center;
  cursor: pointer;
}
.nav-dropdown-menu {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  min-width: 280px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  box-shadow: 0 12px 30px rgba(0,0,0,0.08);
  padding: var(--s-3);
  display: flex;
  flex-direction: column;
  gap: 2px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: opacity 160ms ease, transform 160ms ease, visibility 160ms;
  z-index: 100;
}
.nav-dropdown:hover .nav-dropdown-menu,
.nav-dropdown:focus-within .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.nav-dropdown-menu a {
  display: grid !important;
  grid-template-columns: 14px 1fr;
  align-items: baseline;
  column-gap: var(--s-3);
  padding: var(--s-2) var(--s-3) !important;
  border-radius: var(--r-sm);
  font-size: var(--t-sm) !important;
  color: var(--fg) !important;
  text-decoration: none;
}
.nav-dropdown-menu a:hover { background: var(--bg-paper); color: var(--fg) !important; }
.nav-dropdown-menu a .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
  margin-top: 6px;
}
.nav-dropdown-menu a .lbl {
  font-family: var(--font-display);
  font-weight: 500;
  letter-spacing: -0.01em;
  font-size: var(--t-md);
  color: var(--fg);
}
.nav-dropdown-menu a .sub {
  grid-column: 2 / -1;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--fg-muted);
  text-transform: uppercase;
  margin-top: 2px;
}
.nav-dropdown-menu-sm a {
  grid-template-columns: 1fr;
  padding: 6px var(--s-3) !important;
}
.nav-dropdown-menu-sm a .sub { display: none; }
.nav-dropdown-divider {
  height: 1px;
  background: var(--border-soft);
  margin: var(--s-2) calc(-1 * var(--s-3));
}

/* ---------- Footer ---------- */
.musca-footer {
  border-top: 1px solid var(--border-soft);
  padding: var(--s-8) var(--s-5) var(--s-6);
  margin-top: var(--s-9);
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: var(--s-6);
}
.musca-footer .col-brand { display: flex; flex-direction: column; gap: var(--s-4); }
.musca-footer h4 {
  font-family: var(--font-mono);
  font-size: var(--t-xs);
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-muted);
  margin-bottom: var(--s-3);
}
.musca-footer ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: var(--s-2); }
.musca-footer li a { font-size: var(--t-sm); color: var(--fg); opacity: 0.75; }
.musca-footer li a:hover { opacity: 1; }
.musca-footer .footer-bottom {
  grid-column: 1 / -1;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--s-6);
  margin-top: var(--s-4);
  border-top: 1px solid var(--border-soft);
  font-family: var(--font-mono);
  font-size: var(--t-xs);
  color: var(--fg-soft);
}

/* ---------- Photo placeholders ---------- */
/* Industrial-style placeholder — striped, monospace label */
.photo-placeholder {
  position: relative;
  background:
    repeating-linear-gradient(135deg,
      var(--musca-grey-100) 0 6px,
      var(--musca-grey-50) 6px 12px);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--fg-muted);
  font-family: var(--font-mono);
  font-size: var(--t-xs);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  min-height: 200px;
}
.photo-placeholder::before {
  content: "";
  position: absolute;
  inset: var(--s-3);
  border: 1px dashed var(--musca-grey-300);
  border-radius: var(--r-sm);
  pointer-events: none;
}
/* ----- Photo caption (.ph-label) — globally hidden -----
   Per stakeholder direction (Emmanuel, May 2026): photo captions
   should never appear over the actual imagery. We keep the HTML
   in place so we have a record of what each slot represents, but
   never render the text. */
.ph-label,
.photo-placeholder .ph-label,
.has-photo .ph-label,
.has-photo > .ph-label,
.photo-failed .ph-label { display: none !important; }

[data-theme="dark"] .photo-placeholder {
  background:
    repeating-linear-gradient(135deg,
      rgba(255,255,255,0.04) 0 6px,
      rgba(255,255,255,0.02) 6px 12px);
}

/* ----- Loaded-photo state ----- */
.has-photo,
.photo-placeholder.has-photo,
[data-photo].has-photo {
  background-size: cover !important;
  background-position: center !important;
  background-repeat: no-repeat !important;
  border: none !important;
  color: var(--musca-cream);
  position: relative;
}
.has-photo::before { display: none !important; }

/* Tint overlay — by tone, so we can re-color crosses of photos */
.has-photo::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg,
    rgba(10, 16, 36, 0.15) 0%,
    rgba(10, 16, 36, 0.55) 100%);
  z-index: 0;
}
.has-photo.tone-gas::after {
  background: linear-gradient(180deg,
    rgba(245, 166, 35, 0.05) 0%,
    rgba(10, 16, 36, 0.55) 100%);
}
.has-photo.tone-blue::after {
  background: linear-gradient(180deg,
    rgba(37, 64, 210, 0.1) 0%,
    rgba(10, 16, 36, 0.6) 100%);
}

/* Photo credit pill */
.photo-credit {
  position: absolute;
  bottom: 8px;
  right: 8px;
  z-index: 2;
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.55);
  background: rgba(10, 16, 36, 0.5);
  padding: 3px 8px;
  border-radius: 4px;
  text-transform: lowercase;
}

/* Failed-to-load fallback — looks intentional, with subtle texture */
.photo-failed {
  background:
    radial-gradient(circle at 30% 20%, rgba(37, 64, 210, 0.15), transparent 50%),
    radial-gradient(circle at 70% 80%, rgba(176, 220, 42, 0.08), transparent 50%),
    repeating-linear-gradient(135deg,
      var(--musca-ink) 0 8px,
      var(--musca-ink-2) 8px 16px) !important;
  color: var(--musca-cream) !important;
  border-color: rgba(255, 255, 255, 0.1) !important;
}
.photo-failed::before { border-color: rgba(255, 255, 255, 0.15) !important; }

/* ============================================================
   RESPONSIVE CHROME — mobile nav drawer + footer
   Engages at the --bp-md tier (1000px). Centralized here so every
   page that uses .musca-nav / .musca-footer gets it for free.
   ============================================================ */

/* Hamburger button — hidden on desktop, shown on mobile */
.nav-burger {
  display: none;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  background: var(--bg-elevated);
  color: var(--fg);
  cursor: pointer;
  flex-shrink: 0;
}
.nav-burger svg { display: block; }
.nav-burger .x { display: none; }

/* Drawer + backdrop (always in DOM, off-screen until open) */
.nav-drawer-backdrop {
  position: fixed;
  inset: 0;
  z-index: 90;
  background: rgba(10, 16, 36, 0.45);
  opacity: 0;
  visibility: hidden;
  transition: opacity 220ms ease, visibility 220ms ease;
}
.nav-drawer {
  position: fixed;
  top: 0;
  right: 0;
  z-index: 95;
  height: 100dvh;
  width: min(86vw, 380px);
  background: var(--bg-paper);
  border-left: 1px solid var(--border-soft);
  box-shadow: -16px 0 48px rgba(10, 16, 36, 0.18);
  transform: translateX(100%);
  transition: transform 260ms cubic-bezier(0.4, 0, 0.1, 1);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: var(--s-5);
  gap: var(--s-2);
}
body.nav-open .nav-drawer { transform: translateX(0); }
body.nav-open .nav-drawer-backdrop { opacity: 1; visibility: visible; }
body.nav-open { overflow: hidden; }

.nav-drawer-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: var(--s-4);
  margin-bottom: var(--s-2);
  border-bottom: 1px solid var(--border-soft);
}
.nav-drawer-close {
  width: 42px; height: 42px;
  display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid var(--border); border-radius: var(--r-md);
  background: var(--bg-elevated); color: var(--fg); cursor: pointer; padding: 0;
}
.nav-drawer-close svg { display: block; }

/* Drawer link list */
.nav-drawer a.nav-drawer-link {
  display: flex;
  align-items: center;
  gap: var(--s-3);
  padding: var(--s-3) var(--s-3);
  min-height: 48px;
  border-radius: var(--r-md);
  font-family: var(--font-display);
  font-size: var(--t-lg);
  font-weight: 500;
  letter-spacing: -0.015em;
  color: var(--fg);
}
.nav-drawer a.nav-drawer-link:hover,
.nav-drawer a.nav-drawer-link:active { background: var(--bg-elevated); }
.nav-drawer a.nav-drawer-link .dot {
  width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0;
}
.nav-drawer .nav-drawer-group-label {
  font-family: var(--font-mono);
  font-size: var(--t-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-soft);
  padding: var(--s-4) var(--s-3) var(--s-2);
}
.nav-drawer a.nav-drawer-sub {
  display: flex;
  align-items: center;
  gap: var(--s-3);
  padding: var(--s-2) var(--s-3) var(--s-2) var(--s-4);
  min-height: 44px;
  border-radius: var(--r-md);
  font-size: var(--t-md);
  color: var(--fg-muted);
}
.nav-drawer a.nav-drawer-sub:hover,
.nav-drawer a.nav-drawer-sub:active { background: var(--bg-elevated); color: var(--fg); }
.nav-drawer a.nav-drawer-sub .dot { width: 7px; height: 7px; border-radius: 50%; flex-shrink: 0; }
.nav-drawer-divider { height: 1px; background: var(--border-soft); margin: var(--s-3) 0; }
.nav-drawer-foot { margin-top: auto; padding-top: var(--s-5); display: flex; flex-direction: column; gap: var(--s-4); }
.nav-drawer-foot .btn { width: 100%; justify-content: center; }
.nav-drawer-toggles { display: flex; align-items: center; gap: var(--s-3); }

/* --- The actual breakpoint flip --- */
@media (max-width: 1000px) {
  .musca-nav .nav-links { display: none; }
  .musca-nav .nav-actions .btn-primary { display: none; }
  .nav-burger { display: inline-flex; }
}

/* Keep the lang/theme toggles in the bar but let the burger sit last */
@media (max-width: 1000px) {
  .musca-nav { gap: var(--s-3); }
  .musca-nav .nav-actions { margin-left: auto; }
}
@media (max-width: 380px) {
  /* very narrow: hide lang toggle in bar (still available in drawer) */
  .musca-nav .nav-actions #lang-toggle { display: none; }
}

/* ---------- Footer — responsive ---------- */
@media (max-width: 1000px) {
  .musca-footer { grid-template-columns: 1fr 1fr; gap: var(--s-6) var(--s-5); }
  .musca-footer .col-brand { grid-column: 1 / -1; }
}
@media (max-width: 560px) {
  .musca-footer { grid-template-columns: 1fr; padding: var(--s-7) var(--gutter) var(--s-6); }
  .musca-footer .footer-bottom { flex-direction: column; gap: var(--s-3); align-items: flex-start; }
}