/* ============================================================
   Nayem Dental Care - global design system (shell + shared components).
   Tokens-only: no raw colour values here (they live in tokens.css). Page-specific styles go in pages.css.
   Geometry never animates (no animated height/padding) so nothing shifts; motion uses transform/opacity.
   ============================================================ */

/* ---------- base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { font-family: var(--nd-font-body); color: var(--nd-ink); background: var(--nd-surface); line-height: 1.6; text-rendering: optimizeLegibility; }
html[lang="bn"] body { line-height: 1.75; font-size: 1.0625rem; }
img, svg, video, iframe { max-width: 100%; }
img { height: auto; }
table { max-width: 100%; }
p, li, td, th, a, span { overflow-wrap: break-word; }
h1, h2, h3, h4, h5, h6 { font-family: var(--nd-font-display); font-weight: 600; line-height: 1.15; letter-spacing: -.01em; color: var(--nd-ink); text-wrap: balance; overflow-wrap: break-word; }
html[lang="bn"] :is(h1, h2, h3, h4, h5, h6) { line-height: 1.4; letter-spacing: 0; font-weight: 700; }
h1 { font-size: clamp(2rem, 1.25rem + 3.2vw, 3.6rem); }
h2 { font-size: clamp(1.6rem, 1.1rem + 2vw, 2.6rem); }
h3 { font-size: clamp(1.25rem, 1rem + 1vw, 1.65rem); }
h4 { font-size: 1.2rem; }
h5 { font-size: 1.05rem; }
a { text-underline-offset: .2em; }
::selection { background: rgba(var(--nd-sky-rgb), .35); }
:focus-visible { outline: 2px solid var(--nd-blue); outline-offset: 3px; border-radius: 4px; }
.nd-footer :focus-visible, .nd-section--navy :focus-visible, .page-hero :focus-visible, .nd-notice :focus-visible { outline-color: var(--nd-sky); }

.skip-link { position: absolute; left: -999px; top: 8px; z-index: 2000; background: var(--nd-blue); color: var(--nd-white); padding: .6rem 1rem; border-radius: var(--nd-r-pill); font-weight: 700; text-decoration: none; }
.skip-link:focus { left: 12px; color: var(--nd-white); }

/* phones: cap Bootstrap's wide gutters so rows never push the page sideways */
@media (max-width: 575.98px) {
  .row { --bs-gutter-x: 1.5rem; }
  .row.g-5, .row.gx-5 { --bs-gutter-x: 2rem; }
}

/* ---------- notice bar + topbar ---------- */
.nd-notice { background: var(--nd-navy); color: var(--nd-white); font-size: .875rem; padding: .5rem 0; text-align: center; }
.nd-notice a { color: var(--nd-white); text-decoration: underline; font-weight: 600; }
.nd-nowrap { white-space: nowrap; }
.nd-notice i { color: var(--nd-sky); }
.nd-topbar { background: var(--nd-surface-alt); border-bottom: 1px solid var(--nd-line); font-size: .8125rem; color: var(--nd-ink-2); }
.nd-topbar .container { min-height: 40px; }
.nd-topbar a { color: var(--nd-ink-2); text-decoration: none; }
.nd-topbar a:hover { color: var(--nd-blue); }
.nd-topbar i { color: var(--nd-blue); margin-right: .35rem; }

/* ---------- header ---------- */
.nd-header { position: sticky; top: 0; z-index: var(--nd-z-header); background: var(--nd-surface); border-bottom: 1px solid var(--nd-line); transition: box-shadow .2s ease; view-transition-name: nd-header; }
.nd-header.is-scrolled { box-shadow: var(--nd-shadow-1); }
.nd-header .navbar { padding-block: .55rem; }
.nd-brand { display: inline-flex; align-items: center; gap: .65rem; text-decoration: none; min-height: 44px; }
.nd-brand-mark { height: 46px; width: auto; flex: 0 0 auto; }
.nd-wordmark { font-family: var(--nd-font-body); font-weight: 800; font-size: 1.02rem; letter-spacing: .03em; text-transform: uppercase; line-height: 1.05; color: var(--nd-blue); }
.nd-wordmark .nd-wm-r { color: var(--nd-red); }
html[lang="bn"] .nd-wordmark { font-family: var(--nd-font-display); font-weight: 700; font-size: 1.15rem; letter-spacing: 0; text-transform: none; line-height: 1.25; }
.nd-header .navbar-toggler { border: 1px solid var(--nd-line); border-radius: var(--nd-r-sm); min-width: 44px; min-height: 44px; color: var(--nd-blue); }
.nd-header .navbar-toggler:focus { box-shadow: 0 0 0 .2rem rgba(var(--nd-blue-rgb), .2); }
.nd-header .nav-link { font-weight: 600; color: var(--nd-ink-2); padding: .55rem .9rem; border-radius: var(--nd-r-pill); min-height: 44px; display: inline-flex; align-items: center; }
.nd-header .nav-link:hover, .nd-header .nav-link:focus-visible { color: var(--nd-blue); background: var(--nd-surface-alt); }
.nd-header .nav-link.active { color: var(--nd-blue); background: var(--nd-surface-alt); }
.nd-header .dropdown-menu { border: 1px solid var(--nd-line); border-radius: var(--nd-r); box-shadow: var(--nd-shadow-2); padding: .5rem; min-width: 14rem; }
.nd-header .dropdown-item { border-radius: var(--nd-r-sm); padding: .6rem .85rem; font-weight: 500; color: var(--nd-ink-2); min-height: 44px; display: flex; align-items: center; }
.nd-header .dropdown-item:hover, .nd-header .dropdown-item.active { background: var(--nd-surface-alt); color: var(--nd-blue); }
.nd-nav-actions { display: flex; align-items: center; gap: .6rem; flex-wrap: wrap; }
@media (max-width: 991.98px) {
  .nd-header .navbar-collapse { padding: .5rem 0 1rem; }
  .nd-header .navbar-nav { gap: .15rem; }
  .nd-nav-actions { margin-top: .75rem; }
}
@media (min-width: 992px) { .nd-nav-actions { margin-left: .5rem; } }

/* language switch: two links, the current one filled */
.nd-lang { display: inline-flex; border: 1px solid var(--nd-line); border-radius: var(--nd-r-pill); overflow: hidden; background: var(--nd-card); }
.nd-lang a { min-width: 44px; min-height: 44px; padding: 0 .85rem; display: inline-flex; align-items: center; justify-content: center; font-size: .8125rem; font-weight: 700; color: var(--nd-ink-2); text-decoration: none; }
.nd-lang a:hover { color: var(--nd-blue); }
.nd-lang a[aria-current="true"] { background: var(--nd-blue); color: var(--nd-white); }

/* ---------- buttons ---------- */
.btn { --bs-btn-font-weight: 700; border-radius: var(--nd-r-pill); padding: .6rem 1.3rem; min-height: 44px; display: inline-flex; align-items: center; justify-content: center; gap: .5rem; line-height: 1.2; }
.btn-lg { padding: .85rem 1.7rem; font-size: 1.0625rem; min-height: 52px; }
.btn-sm { padding: .4rem .9rem; min-height: 38px; }
.btn-primary { --bs-btn-bg: var(--nd-blue); --bs-btn-border-color: var(--nd-blue); --bs-btn-color: var(--nd-white); --bs-btn-hover-bg: var(--nd-blue-600); --bs-btn-hover-border-color: var(--nd-blue-600); --bs-btn-hover-color: var(--nd-white); --bs-btn-active-bg: var(--nd-navy); --bs-btn-active-border-color: var(--nd-navy); --bs-btn-active-color: var(--nd-white); --bs-btn-focus-shadow-rgb: var(--nd-blue-rgb); --bs-btn-disabled-bg: var(--nd-blue); --bs-btn-disabled-border-color: var(--nd-blue); }
.btn-cta, .btn-accent { --bs-btn-bg: var(--nd-cta); --bs-btn-border-color: var(--nd-cta); --bs-btn-color: var(--nd-white); --bs-btn-hover-bg: var(--nd-cta-hover); --bs-btn-hover-border-color: var(--nd-cta-hover); --bs-btn-hover-color: var(--nd-white); --bs-btn-active-bg: var(--nd-cta-hover); --bs-btn-active-border-color: var(--nd-cta-hover); --bs-btn-active-color: var(--nd-white); --bs-btn-focus-shadow-rgb: var(--nd-red-rgb); box-shadow: 0 10px 24px -12px rgba(var(--nd-red-rgb), .7); }
.btn-outline-primary { --bs-btn-color: var(--nd-blue); --bs-btn-border-color: var(--nd-blue); --bs-btn-hover-bg: var(--nd-blue); --bs-btn-hover-border-color: var(--nd-blue); --bs-btn-hover-color: var(--nd-white); --bs-btn-active-bg: var(--nd-navy); --bs-btn-active-border-color: var(--nd-navy); --bs-btn-active-color: var(--nd-white); --bs-btn-focus-shadow-rgb: var(--nd-blue-rgb); }
.btn-outline-light { --bs-btn-color: var(--nd-white); --bs-btn-border-color: rgba(255, 255, 255, .55); --bs-btn-hover-bg: var(--nd-white); --bs-btn-hover-color: var(--nd-navy); --bs-btn-hover-border-color: var(--nd-white); }
.btn-light { --bs-btn-bg: var(--nd-white); --bs-btn-border-color: var(--nd-white); --bs-btn-color: var(--nd-navy); --bs-btn-hover-bg: var(--nd-surface-alt); --bs-btn-hover-border-color: var(--nd-surface-alt); --bs-btn-hover-color: var(--nd-navy); }

/* ---------- surfaces: cards, chips, badges ---------- */
.card { border: 1px solid var(--nd-line); border-radius: var(--nd-r); background: var(--nd-card); --bs-card-border-color: var(--nd-line); }
.nd-card-hover { transition: transform .25s var(--nd-ease), box-shadow .25s var(--nd-ease); }
.nd-card-hover:hover { transform: translateY(-4px); box-shadow: var(--nd-shadow-2); }
.nd-chip { display: inline-flex; align-items: center; gap: .4rem; padding: .3rem .8rem; border-radius: var(--nd-r-pill); background: var(--nd-surface-alt); color: var(--nd-blue); font-size: .8125rem; font-weight: 700; border: 1px solid var(--nd-line); }
.nd-chip--green { color: var(--nd-green-text); }
.nd-chip--red { color: var(--nd-red); }
.badge { border-radius: var(--nd-r-pill); font-weight: 700; }

/* ---------- sections, headings, motif ---------- */
.nd-section, .section { padding-block: clamp(3.5rem, 7vw, 6.5rem); }
.nd-section--alt { background: var(--nd-surface-alt); }
.nd-section--navy { background: var(--nd-navy); color: var(--nd-on-navy); }
.nd-section--navy :is(h1, h2, h3, h4, h5, h6) { color: var(--nd-white); }
.nd-eyebrow { display: inline-flex; align-items: center; gap: .6rem; font-weight: 800; font-size: .8125rem; letter-spacing: .14em; text-transform: uppercase; color: var(--nd-blue); }
.nd-eyebrow::before { content: ""; width: .55rem; height: .55rem; background: var(--nd-red); transform: rotate(45deg); flex: 0 0 auto; }
html[lang="bn"] .nd-eyebrow { letter-spacing: .04em; text-transform: none; font-size: .9375rem; }
.nd-section--navy .nd-eyebrow { color: var(--nd-sky); }
.nd-title { font-size: clamp(1.75rem, 1.2rem + 2.2vw, 2.75rem); margin: .6rem 0 .75rem; }
.nd-lead { font-size: 1.125rem; color: var(--nd-ink-2); max-width: 62ch; }
.nd-section--navy .nd-lead { color: var(--nd-on-navy); }
.nd-em, .em { color: var(--nd-red); font-style: italic; }
.nd-section--navy .nd-em { color: var(--nd-sky); }
.nd-arch { border-radius: 999px 999px var(--nd-r-lg) var(--nd-r-lg); overflow: hidden; }
/* brand double-ring ornament (echoes the logo seal): put on any position:relative box */
.nd-rings { position: relative; isolation: isolate; }
.nd-rings::before, .nd-rings::after { content: ""; position: absolute; border-radius: 50%; pointer-events: none; z-index: -1; }
.nd-rings::before { inset: -14% -10% auto auto; width: 62%; aspect-ratio: 1; border: clamp(10px, 2vw, 22px) solid var(--nd-ring-b); }
.nd-rings::after { inset: -8% -4% auto auto; width: 50%; aspect-ratio: 1; border: clamp(6px, 1.2vw, 12px) solid var(--nd-ring-a); }

/* inner-page banner (navy, with the ring ornament) */
.page-hero { position: relative; overflow: hidden; background: var(--nd-navy); color: var(--nd-on-navy); padding-block: clamp(3rem, 6vw, 5rem); isolation: isolate; }
.page-hero::before, .page-hero::after { content: ""; position: absolute; border-radius: 50%; pointer-events: none; z-index: -1; }
.page-hero::before { right: -90px; top: -110px; width: 360px; height: 360px; border: 26px solid var(--nd-ring-b); }
.page-hero::after { right: -40px; top: -60px; width: 260px; height: 260px; border: 12px solid var(--nd-ring-a); }
.page-hero h1, .page-hero h2 { color: var(--nd-white); }
.page-hero a { color: var(--nd-sky); }
.page-hero .breadcrumb { --bs-breadcrumb-divider-color: var(--nd-on-navy); --bs-breadcrumb-item-active-color: var(--nd-on-navy); margin-bottom: .75rem; }

/* ---------- forms ---------- */
.form-label { font-weight: 600; color: var(--nd-ink-2); }
.form-control, .form-select { border: 1px solid var(--nd-line); border-radius: var(--nd-r-sm); min-height: 46px; padding: .55rem .9rem; background-color: var(--nd-card); color: var(--nd-ink); }
.form-control:focus, .form-select:focus { border-color: var(--nd-blue); box-shadow: 0 0 0 .2rem rgba(var(--nd-blue-rgb), .18); }
.form-control::placeholder { color: var(--nd-muted); }
.form-text, .text-muted { color: var(--nd-muted) !important; }
.invalid-feedback, .field-validation-error, .text-danger { color: var(--nd-red) !important; }
.form-check-input:checked { background-color: var(--nd-blue); border-color: var(--nd-blue); }
.form-check-input { min-width: 1.15rem; min-height: 1.15rem; }
.nd-hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }   /* honeypot field */

/* ---------- footer ---------- */
.nd-footer { background: var(--nd-navy); color: var(--nd-on-navy); font-size: .95rem; }
.nd-footer::before { content: ""; display: block; height: 4px; background: linear-gradient(90deg, var(--nd-blue) 0 72%, var(--nd-sky) 72% 88%, var(--nd-red) 88% 100%); }
.nd-footer-main { padding-block: clamp(2.5rem, 5vw, 4rem) 2rem; }
.nd-footer h5 { color: var(--nd-white); font-size: 1.05rem; margin-bottom: 1rem; }
.nd-footer a { color: var(--nd-on-navy); text-decoration: none; }
.nd-footer a:hover { color: var(--nd-sky); }
.nd-footer ul { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: minmax(0, 1fr); gap: .55rem; }
.nd-footer a, .nd-footer span, .nd-footer p { overflow-wrap: anywhere; }
.nd-footer-contact li { display: flex; gap: .65rem; align-items: flex-start; }
@media (max-width: 991.98px) { .nd-footer ul { gap: .1rem; } .nd-footer ul a { display: inline-flex; align-items: center; min-height: 44px; } }
.nd-footer-contact i { color: var(--nd-sky); margin-top: .2rem; }
.nd-seal { display: inline-block; background: var(--nd-white); border-radius: var(--nd-r); padding: .5rem; margin-bottom: 1rem; }
.nd-seal img { display: block; width: 150px; }
.nd-social { display: flex; gap: .6rem; flex-wrap: wrap; margin-top: 1rem; }
.nd-social a { width: 44px; height: 44px; border-radius: 50%; display: inline-grid; place-items: center; background: rgba(255, 255, 255, .09); color: var(--nd-white); font-size: 1.1rem; }
.nd-social a:hover { background: var(--nd-sky); color: var(--nd-navy); }
.nd-news .form-control { background: rgba(255, 255, 255, .08); border-color: rgba(255, 255, 255, .22); color: var(--nd-white); }
.nd-news .form-control::placeholder { color: var(--nd-on-navy); }
.nd-footer-bottom { border-top: 1px solid rgba(255, 255, 255, .14); padding-block: 1.1rem; display: flex; flex-wrap: wrap; gap: .75rem 1.5rem; justify-content: space-between; align-items: center; font-size: .875rem; }
.dev-credit { display: inline-flex; align-items: center; gap: .4rem; flex-wrap: wrap; }
.dev-credit .heart { color: var(--nd-red); }
@media (max-width: 991.98px) { .nd-footer-bottom { padding-right: 56px; } }   /* keeps the last footer links clear of the back-to-top button */
.isoft-pill { display: inline-flex; align-items: center; gap: .3rem; padding: .35rem .8rem; border-radius: var(--nd-r-pill); background: rgba(255, 255, 255, .1); color: var(--nd-white) !important; font-weight: 700; }

/* ---------- mobile dock (Call / WhatsApp / Book / Map) + back-to-top + cookie banner ---------- */
.nd-dock { position: fixed; inset: auto 0 0 0; z-index: var(--nd-z-dock); display: grid; grid-auto-flow: column; grid-auto-columns: 1fr; background: var(--nd-card); border-top: 1px solid var(--nd-line); box-shadow: 0 -10px 28px -14px rgba(var(--nd-navy-rgb), .35); padding-bottom: env(safe-area-inset-bottom, 0px); view-transition-name: nd-dock; }
.nd-dock a { min-height: var(--nd-dock-h); display: flex; flex-direction: column; align-items: center; justify-content: center; gap: .1rem; font-size: .75rem; font-weight: 700; color: var(--nd-ink-2); text-decoration: none; }
.nd-dock a i { font-size: 1.3rem; line-height: 1; color: var(--nd-blue); }
.nd-dock a.is-cta { background: var(--nd-cta); color: var(--nd-white); }
.nd-dock a.is-cta i { color: var(--nd-white); }
.nd-dock a:active { background: var(--nd-surface-alt); }
.nd-dock a.is-cta:active { background: var(--nd-cta-hover); }
@media (max-width: 991.98px) { body { padding-bottom: calc(var(--nd-dock-h) + env(safe-area-inset-bottom, 0px)); } }
@media (min-width: 992px) { .nd-dock { display: none; } }

.nd-top { position: static; flex: 0 0 auto; width: 46px; height: 46px; border-radius: 50%; border: 0; background: var(--nd-blue); color: var(--nd-white); display: grid; place-items: center; box-shadow: var(--nd-shadow-2); opacity: 0; pointer-events: none; transform: translateY(8px); transition: opacity .2s ease, transform .2s ease; }
.nd-top.show { opacity: 1; pointer-events: auto; transform: none; }
.nd-top:hover { background: var(--nd-navy); }

/* floating buttons (bottom right): back-to-top above the desktop Call / WhatsApp buttons. --nd-cookie-h is set by site.js while the cookie notice is open, so nothing hides behind it. */
.nd-fab-stack { position: fixed; right: 16px; bottom: calc(16px + var(--nd-cookie-h, 0px)); z-index: var(--nd-z-top); display: flex; flex-direction: column; align-items: center; gap: .6rem; pointer-events: none; }
.nd-fab-stack > * { pointer-events: auto; }
.nd-fab { display: none; flex-direction: column; gap: .6rem; }
.nd-fab__btn { display: grid; place-items: center; width: 52px; height: 52px; border-radius: 50%; color: var(--nd-white); font-size: 1.45rem; text-decoration: none; box-shadow: var(--nd-shadow-2); transition: transform .18s var(--nd-ease); }
.nd-fab__btn:hover { color: var(--nd-white); transform: translateY(-2px); }
.nd-fab__btn:focus-visible { outline: 3px solid var(--nd-sky); outline-offset: 3px; }
.nd-fab__btn--call { background: var(--nd-blue); }
.nd-fab__btn--wa { background: var(--nd-green-text); }
@media (min-width: 992px) { .nd-fab { display: flex; } }
@media (max-width: 991.98px) { .nd-fab-stack { bottom: calc(var(--nd-dock-h) + 14px + env(safe-area-inset-bottom, 0px) + var(--nd-cookie-h, 0px)); } }

/* desktop booking bar: appears after the first screens, steps aside near the footer (site.js); phones use the bottom dock instead */
.nd-book-bar { display: none; }
@media (min-width: 992px) {
  .js .nd-book-bar { position: fixed; left: 50%; bottom: calc(16px + var(--nd-cookie-h, 0px)); z-index: var(--nd-z-top); display: flex; align-items: center; justify-content: space-between; gap: 1rem; width: min(44rem, calc(100vw - 14rem)); padding: .55rem .6rem .55rem 1.35rem; background: var(--nd-card); border: 1px solid var(--nd-line); border-radius: var(--nd-r-pill); box-shadow: var(--nd-shadow-2); opacity: 0; transform: translate(-50%, 18px); pointer-events: none; transition: opacity .25s var(--nd-ease), transform .25s var(--nd-ease); }
  .js .nd-book-bar.is-on { opacity: 1; transform: translate(-50%, 0); pointer-events: auto; }
}
.nd-book-bar__text { display: flex; align-items: center; gap: .6rem; font-weight: 700; color: var(--nd-navy); line-height: 1.35; }
.nd-book-bar__text i { color: var(--nd-red); font-size: 1.25rem; }
.nd-book-bar .btn { white-space: nowrap; }
@media (prefers-reduced-motion: reduce) { .js .nd-book-bar, .nd-fab__btn { transition: none; } .nd-fab__btn:hover { transform: none; } }

.nd-cookie { position: fixed; left: 0; right: 0; bottom: 0; z-index: var(--nd-z-cookie); background: rgba(var(--nd-navy-rgb), .97); color: var(--nd-white); padding: .75rem 0; border-top: 3px solid var(--nd-sky); box-shadow: 0 -4px 16px rgba(var(--nd-ink-rgb), .25); }
.nd-cookie a { color: var(--nd-sky); text-decoration: underline; }
@media (max-width: 991.98px) { .nd-cookie { bottom: calc(var(--nd-dock-h) + 1px + env(safe-area-inset-bottom, 0px)); } }
.nd-slip { display: none; }   /* the appointment slip exists for the printer only (see print.css) */
@media print { .nd-slip { display: block; } }

/* ---------- smooth page-to-page transitions (supporting browsers only) ---------- */
@media (prefers-reduced-motion: no-preference) {
  @view-transition { navigation: auto; }
  ::view-transition-old(root), ::view-transition-new(root) { animation-duration: .22s; }
}

/* ---------- reduced motion: everything settles instantly ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}