/* ============================================================================
 * Setu Design System — Page Layout Chrome (Frontend Phase 2)
 * ----------------------------------------------------------------------------
 * Styles for global page chrome: announcement bar, top bar, header/mega menu,
 * footer, floating buttons, cookie banner, back-to-top, search overlay,
 * accessibility toolbar. Built entirely on --sds-* tokens (tokens.css) so all
 * themes/brands apply automatically. Prefix: .sds-* (layout scope: .sds-l-*)
 * ==========================================================================*/

/* ---- Announcement bar ------------------------------------------------ */
.sds-l-announce { background: var(--sds-color-action); color: var(--sds-color-text-inverse); text-align: center; padding: var(--sds-space-2) var(--sds-space-4); font-size: var(--sds-fs-body-sm); position: relative; }
.sds-l-announce a { color: inherit; text-decoration: underline; font-weight: var(--sds-weight-semibold); }
.sds-l-announce__close { position: absolute; inset-inline-end: var(--sds-space-2); top: 50%; transform: translateY(-50%); background: transparent; border: 0; color: inherit; cursor: pointer; padding: var(--sds-space-1); }

/* ---- Top bar --------------------------------------------------------- */
.sds-l-topbar { background: var(--sds-color-surface-sunken); border-bottom: 1px solid var(--sds-color-border-subtle); font-size: var(--sds-fs-caption); color: var(--sds-color-text-muted); }
.sds-l-topbar__inner { display: flex; align-items: center; gap: var(--sds-space-4); min-height: 36px; flex-wrap: wrap; }
.sds-l-topbar a { color: inherit; text-decoration: none; }
.sds-l-topbar a:hover { color: var(--sds-color-text); }

/* ---- Public header --------------------------------------------------- */
.sds-l-header { background: var(--sds-color-surface); border-bottom: 1px solid var(--sds-color-border); position: sticky; top: 0; z-index: var(--sds-z-sticky); }
.sds-l-header.is-scrolled { box-shadow: var(--sds-shadow-sm); }
.sds-l-header__inner { display: flex; align-items: center; gap: var(--sds-space-4); min-height: var(--sds-header-h); }
.sds-l-brand { display: inline-flex; align-items: center; gap: var(--sds-space-2); font-weight: var(--sds-weight-bold); font-size: var(--sds-fs-h5); color: var(--sds-color-text-strong); text-decoration: none; }
.sds-l-brand img { height: 36px; width: auto; }
.sds-l-nav { display: flex; align-items: center; gap: var(--sds-space-1); }
.sds-l-nav__link { display: inline-flex; align-items: center; gap: var(--sds-space-1); padding: var(--sds-space-2) var(--sds-space-3); border-radius: var(--sds-radius-md); color: var(--sds-color-text); text-decoration: none; font-weight: var(--sds-weight-medium); }
.sds-l-nav__link:hover { background: var(--sds-color-hover-scrim); }
.sds-l-nav__link[aria-current="page"] { color: var(--sds-color-action); }
@media (max-width: 1023px) { .sds-l-nav--primary { display: none; } }
.sds-l-header__burger { display: none; }
@media (max-width: 1023px) { .sds-l-header__burger { display: inline-flex; } }

/* ---- Mega menu ------------------------------------------------------- */
.sds-l-mega { position: relative; }
.sds-l-mega__panel { position: absolute; inset-inline-start: 0; top: 100%; background: var(--sds-color-surface-raised); border: 1px solid var(--sds-color-border); border-radius: var(--sds-radius-lg); box-shadow: var(--sds-shadow-md); padding: var(--sds-space-6); min-width: 520px; display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: var(--sds-space-6); opacity: 0; visibility: hidden; transform: translateY(6px); transition: opacity var(--sds-motion-base), transform var(--sds-motion-base), visibility var(--sds-motion-base); z-index: var(--sds-z-dropdown); }
.sds-l-mega:hover .sds-l-mega__panel, .sds-l-mega:focus-within .sds-l-mega__panel { opacity: 1; visibility: visible; transform: translateY(0); }
.sds-l-mega__col h3 { font-size: var(--sds-fs-caption); text-transform: uppercase; letter-spacing: var(--sds-tracking-wide); color: var(--sds-color-text-muted); margin: 0 0 var(--sds-space-2); }
.sds-l-mega__col a { display: block; padding: var(--sds-space-1) 0; color: var(--sds-color-text); text-decoration: none; }
.sds-l-mega__col a:hover { color: var(--sds-color-action); }

/* ---- Footer ---------------------------------------------------------- */
.sds-l-footer { background: var(--sds-color-surface-sunken); border-top: 1px solid var(--sds-color-border); color: var(--sds-color-text-muted); margin-top: auto; }
.sds-l-footer__grid { display: grid; grid-template-columns: 2fr repeat(auto-fit, minmax(140px, 1fr)); gap: var(--sds-space-8); padding-block: var(--sds-space-12); }
.sds-l-footer h3 { font-size: var(--sds-fs-body-sm); color: var(--sds-color-text-strong); margin: 0 0 var(--sds-space-3); }
.sds-l-footer a { color: var(--sds-color-text-muted); text-decoration: none; display: block; padding: var(--sds-space-1) 0; }
.sds-l-footer a:hover { color: var(--sds-color-text); }
.sds-l-footer__bottom { border-top: 1px solid var(--sds-color-border-subtle); padding-block: var(--sds-space-4); display: flex; justify-content: space-between; align-items: center; gap: var(--sds-space-4); flex-wrap: wrap; font-size: var(--sds-fs-caption); }
.sds-l-social { display: flex; gap: var(--sds-space-2); }
.sds-l-social a { display: inline-flex; align-items: center; justify-content: center; width: 36px; height: 36px; border-radius: var(--sds-radius-full); background: var(--sds-color-surface); border: 1px solid var(--sds-color-border); }

/* ---- Newsletter ------------------------------------------------------ */
.sds-l-newsletter { background: var(--sds-color-surface-tint); border-radius: var(--sds-radius-lg); padding: var(--sds-space-8); }
.sds-l-newsletter form { display: flex; gap: var(--sds-space-2); max-width: 440px; flex-wrap: wrap; }
.sds-l-newsletter .sds-input { flex: 1; min-width: 200px; }

/* ---- Cookie banner --------------------------------------------------- */
.sds-l-cookie { position: fixed; inset-inline: var(--sds-space-4); bottom: var(--sds-space-4); max-width: 520px; margin-inline: auto; background: var(--sds-color-surface-raised); border: 1px solid var(--sds-color-border); border-radius: var(--sds-radius-lg); box-shadow: var(--sds-shadow-lg); padding: var(--sds-space-4) var(--sds-space-5); z-index: var(--sds-z-toast); display: flex; gap: var(--sds-space-4); align-items: center; flex-wrap: wrap; }

/* ---- Floating buttons ------------------------------------------------ */
.sds-l-fab { position: fixed; inset-inline-end: var(--sds-space-5); display: inline-flex; align-items: center; justify-content: center; width: 56px; height: 56px; border-radius: var(--sds-radius-full); box-shadow: var(--sds-shadow-lg); color: #fff; text-decoration: none; border: 0; cursor: pointer; z-index: var(--sds-z-sticky); transition: transform var(--sds-motion-fast); }
.sds-l-fab:hover { transform: scale(1.05); }
.sds-l-fab--donate { bottom: calc(var(--sds-space-5) + 72px); background: var(--sds-color-accent); }
.sds-l-fab--whatsapp { bottom: var(--sds-space-5); background: #25D366; }
.sds-l-totop { position: fixed; inset-inline-start: var(--sds-space-5); bottom: var(--sds-space-5); width: 44px; height: 44px; border-radius: var(--sds-radius-full); background: var(--sds-color-surface-raised); border: 1px solid var(--sds-color-border); box-shadow: var(--sds-shadow-md); color: var(--sds-color-text); cursor: pointer; z-index: var(--sds-z-sticky); opacity: 0; visibility: hidden; transition: opacity var(--sds-motion-base), visibility var(--sds-motion-base); }
.sds-l-totop.is-visible { opacity: 1; visibility: visible; }

/* ---- Search overlay -------------------------------------------------- */
.sds-l-search-overlay { position: fixed; inset: 0; background: var(--sds-color-overlay); z-index: var(--sds-z-overlay); display: none; padding-top: 12vh; justify-content: center; }
.sds-l-search-overlay.is-open { display: flex; }
.sds-l-search-overlay__box { width: min(640px, 92vw); background: var(--sds-color-surface); border-radius: var(--sds-radius-xl); box-shadow: var(--sds-shadow-xl); padding: var(--sds-space-5); height: fit-content; }

/* ---- Accessibility toolbar ------------------------------------------- */
.sds-l-a11y { position: fixed; inset-inline-end: 0; top: 50%; transform: translateY(-50%); background: var(--sds-color-surface-raised); border: 1px solid var(--sds-color-border); border-inline-end: 0; border-radius: var(--sds-radius-lg) 0 0 var(--sds-radius-lg); box-shadow: var(--sds-shadow-md); z-index: var(--sds-z-sticky); display: flex; flex-direction: column; }
.sds-l-a11y button { width: 44px; height: 44px; border: 0; background: transparent; color: var(--sds-color-text); cursor: pointer; }
.sds-l-a11y button:hover { background: var(--sds-color-hover-scrim); }
/* Accessibility preference classes (toggled on <html>) */
html.sds-font-lg { font-size: 18px; }
html.sds-font-xl { font-size: 20px; }
html.sds-underline-links a { text-decoration: underline !important; }

/* ---- Dashboard shell responsive sidebar ------------------------------ */
.sds-l-dash { display: grid; grid-template-columns: var(--sds-sidebar-w) 1fr; min-height: 100vh; }
.sds-l-dash__aside { background: var(--sds-color-surface); border-inline-end: 1px solid var(--sds-color-border); position: sticky; top: 0; height: 100vh; overflow-y: auto; }
.sds-l-dash__main { display: flex; flex-direction: column; min-width: 0; }
.sds-l-dash__body { flex: 1; padding: var(--sds-space-6); }
@media (max-width: 1023px) {
  .sds-l-dash { grid-template-columns: 1fr; }
  .sds-l-dash__aside { position: fixed; inset-inline-start: 0; top: 0; bottom: 0; width: var(--sds-sidebar-w); z-index: var(--sds-z-modal); transform: translateX(-100%); transition: transform var(--sds-motion-base); height: 100vh; }
  .sds-l-dash[data-sidebar="open"] .sds-l-dash__aside { transform: translateX(0); }
  .sds-l-dash__scrim { position: fixed; inset: 0; background: var(--sds-color-overlay); z-index: var(--sds-z-overlay); display: none; }
  .sds-l-dash[data-sidebar="open"] .sds-l-dash__scrim { display: block; }
}

/* ---- Auth layout ----------------------------------------------------- */
.sds-l-auth { min-height: 100vh; display: grid; place-items: center; padding: var(--sds-space-6); background: var(--sds-color-bg-app); position: relative; overflow: hidden; }
.sds-l-auth__bg { position: absolute; inset: 0; background: radial-gradient(1200px 600px at 80% -10%, var(--sds-color-surface-tint), transparent), radial-gradient(900px 500px at -10% 110%, var(--sds-color-surface-tint), transparent); z-index: 0; }
.sds-l-auth__inner { position: relative; z-index: 1; width: 100%; max-width: 440px; }

/* ---- Page scaffolds -------------------------------------------------- */
.sds-l-page { min-height: 100vh; display: flex; flex-direction: column; }
.sds-l-hero { background: var(--sds-color-surface-tint); padding-block: var(--sds-space-16); }
.sds-l-detail { display: grid; grid-template-columns: 1fr 320px; gap: var(--sds-space-8); align-items: start; }
@media (max-width: 1023px) { .sds-l-detail { grid-template-columns: 1fr; } }
.sds-l-two-col { display: grid; grid-template-columns: 240px 1fr; gap: var(--sds-space-8); align-items: start; }
@media (max-width: 767px) { .sds-l-two-col { grid-template-columns: 1fr; } }
.sds-l-grid { display: grid; gap: var(--sds-space-6); grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
.sds-l-page-head { display: flex; align-items: flex-start; justify-content: space-between; gap: var(--sds-space-4); flex-wrap: wrap; margin-bottom: var(--sds-space-6); }
.sds-l-savebar { position: sticky; bottom: 0; background: var(--sds-color-surface-raised); border-top: 1px solid var(--sds-color-border); box-shadow: 0 -2px 8px rgba(16,30,54,0.06); padding: var(--sds-space-3) var(--sds-space-4); display: flex; justify-content: flex-end; gap: var(--sds-space-2); z-index: var(--sds-z-sticky); }
.sds-l-lazy { min-height: 120px; }

/* ---- Error page ------------------------------------------------------ */
.sds-l-error { min-height: 100vh; display: grid; place-items: center; text-align: center; padding: var(--sds-space-8); }
.sds-l-error__code { font-size: 96px; font-weight: var(--sds-weight-bold); line-height: 1; color: var(--sds-color-action); }