/* ============================================================
   Svastha ENT Clinic — custom design system
   Palette: ink #264653 · teal #2A9D8F · sun #E9C46A
            clay #F4A261 · bone #F8F5F0 · line #E5DED3
   ============================================================ */
* { -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }
html { scroll-behavior: smooth; }
body { font-family: 'Inter', system-ui, -apple-system, sans-serif; background: #F8F5F0; color: #264653; overflow-x: hidden; }
.font-display { font-family: 'Sora', sans-serif; }
::selection { background: #E9C46A; color: #264653; }

/* ---- Skip link ---- */
.skip-link { position: absolute; left: -9999px; top: 0; z-index: 200; background: #2A9D8F; color: #fff; padding: .65rem 1.1rem; font-size: .8rem; }
.skip-link:focus { left: 0; }

/* ---- Eyebrow labels ---- */
.eyebrow { display: inline-flex; align-items: center; gap: .7rem; text-transform: uppercase; letter-spacing: .3em; font-size: .7rem; font-weight: 600; color: #2A9D8F; }
.eyebrow::before { content: ""; width: 2.2rem; height: 1px; background: #E9C46A; }
.eyebrow.on-ink { color: #E9C46A; }
.eyebrow.on-ink::before { background: #F4A261; }

/* ---- Oversized ghost numbers ---- */
.ghost-num { font-family: 'Sora', sans-serif; font-weight: 800; line-height: .8; letter-spacing: -.04em; color: transparent; -webkit-text-stroke: 1px rgba(38,70,83,.16); user-select: none; }
.ghost-num.on-ink { -webkit-text-stroke: 1px rgba(248,245,240,.22); }

/* ---- Buttons ---- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: .55rem; text-transform: uppercase; letter-spacing: .14em; font-size: .72rem; font-weight: 700; padding: .95rem 1.7rem; border: 1px solid transparent; transition: all .3s ease; cursor: pointer; }
.btn-ink { background: #264653; color: #F8F5F0; border-color: #264653; }
.btn-ink:hover { background: #2A9D8F; border-color: #2A9D8F; }
.btn-teal { background: #2A9D8F; color: #fff; border-color: #2A9D8F; }
.btn-teal:hover { background: #264653; border-color: #264653; }
.btn-sun { background: #E9C46A; color: #264653; border-color: #E9C46A; }
.btn-sun:hover { background: #F4A261; border-color: #F4A261; }
.btn-outline-ink { background: transparent; color: #264653; border-color: rgba(38,70,83,.4); }
.btn-outline-ink:hover { background: #264653; color: #F8F5F0; border-color: #264653; }
.btn-outline-bone { background: transparent; color: #F8F5F0; border-color: rgba(248,245,240,.45); }
.btn-outline-bone:hover { background: #F8F5F0; color: #264653; border-color: #F8F5F0; }
.btn-outline-teal { background: transparent; color: #2A9D8F; border-color: rgba(42,157,143,.5); }
.btn-outline-teal:hover { background: #2A9D8F; color: #fff; border-color: #2A9D8F; }

/* ---- Nav underline ---- */
.nav-link { position: relative; font-size: .78rem; letter-spacing: .14em; text-transform: uppercase; font-weight: 600; color: #264653; transition: color .3s ease; padding: .4rem 0; }
.nav-link::after { content: ""; position: absolute; left: 0; bottom: 0; width: 100%; height: 1px; background: #2A9D8F; transform: scaleX(0); transform-origin: right; transition: transform .35s ease; }
.nav-link:hover, .nav-link.active { color: #2A9D8F; }
.nav-link:hover::after, .nav-link.active::after { transform: scaleX(1); transform-origin: left; }

/* ---- Card lift ---- */
.lift { transition: transform .4s ease, box-shadow .4s ease, border-color .4s ease, background-color .4s ease; }
.lift:hover { transform: translateY(-6px); box-shadow: 0 24px 48px -24px rgba(38,70,83,.28); border-color: #2A9D8F; }

/* ---- Scroll reveal ---- */
.js .reveal { opacity: 0; transform: translateY(30px); transition: opacity .9s cubic-bezier(.22,.61,.36,1), transform .9s cubic-bezier(.22,.61,.36,1); }
.js .reveal.in-view { opacity: 1; transform: none; }

/* ---- Image reveal mask ---- */
.mask-reveal { overflow: hidden; }
.mask-reveal img { transform: scale(1.16); transition: transform 1.3s cubic-bezier(.16,1,.3,1); will-change: transform; }
.mask-reveal.in-view img { transform: scale(1); }

/* ---- Line drawing (SVG strokes) ---- */
.line-draw .ld { stroke-dasharray: 1400; stroke-dashoffset: 1400; }
.line-draw.in-view .ld { animation: lineDraw 2s ease forwards .15s; }
@keyframes lineDraw { to { stroke-dashoffset: 0; } }

/* ---- Marquee ---- */
.marquee { overflow: hidden; }
.marquee-track { display: flex; width: max-content; animation: marquee 36s linear infinite; }
.marquee:hover .marquee-track { animation-play-state: paused; }
@keyframes marquee { from { transform: translateX(0); } to { transform: translateX(-50%); } }

/* ---- Horizontal scroll rows ---- */
.hscroll { display: flex; gap: 1.25rem; overflow-x: auto; scroll-snap-type: x mandatory; scrollbar-width: none; -ms-overflow-style: none; padding-bottom: 2px; }
.hscroll::-webkit-scrollbar { display: none; }
.hscroll > * { scroll-snap-align: start; flex-shrink: 0; }

/* ---- FAQ ---- */
details.faq summary { list-style: none; cursor: pointer; }
details.faq summary::-webkit-details-marker { display: none; }
.faq-icon { transition: transform .35s ease; }
details.faq[open] .faq-icon { transform: rotate(45deg); }
details.faq { border: 1px solid #E5DED3; border-left: 2px solid #E9C46A; background: #fff; }

/* ---- Sticky header shadow ---- */
#site-header.scrolled { box-shadow: 0 14px 30px -20px rgba(38,70,83,.4); }

/* ---- Page transition overlay ---- */
.page-overlay { position: fixed; inset: 0; z-index: 120; background: #264653; transform: translateY(100%); transition: transform .55s cubic-bezier(.76,0,.24,1); pointer-events: none; display: none; }
.page-overlay.covering { transform: translateY(0); pointer-events: auto; }
.page-overlay .overlay-mark { position: absolute; inset: 0; display: grid; place-items: center; }
.page-overlay .overlay-mark svg { width: 52px; height: 52px; opacity: .22; }

/* ---- Blueprint grid background ---- */
.blueprint { background-image: linear-gradient(rgba(38,70,83,.045) 1px, transparent 1px), linear-gradient(90deg, rgba(38,70,83,.045) 1px, transparent 1px); background-size: 44px 44px; }

/* ---- Diagonal stripes accent ---- */
.stripes { background-image: repeating-linear-gradient(-45deg, rgba(233,196,106,.18) 0 8px, transparent 8px 16px); }

/* ---- Body scrollbar ---- */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: #EFE9DF; }
::-webkit-scrollbar-thumb { background: #2A9D8F; border: 2px solid #EFE9DF; }
::-webkit-scrollbar-thumb:hover { background: #264653; }

/* ---- Back to top ---- */
#toTop { opacity: 0; pointer-events: none; transform: translateY(12px); transition: all .3s ease; }
#toTop.visible { opacity: 1; pointer-events: auto; transform: none; }

/* ---- Focus visibility ---- */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible, summary:focus-visible { outline: 2px solid #2A9D8F; outline-offset: 3px; }

/* ---- Form fields ---- */
.field { width: 100%; border: 1px solid #E5DED3; background: #fff; color: #264653; padding: .8rem 1rem; font-size: .9rem; transition: border-color .3s ease, box-shadow .3s ease; }
.field:focus { outline: none; border-color: #2A9D8F; box-shadow: 0 0 0 3px rgba(42,157,143,.15); }
.field::placeholder { color: #9A938A; }

/* ---- Reduced motion ---- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
  .js .reveal { opacity: 1; transform: none; }
  .mask-reveal img { transform: none; }
  .page-overlay { transition: none; }
}