/* =========================================================================
   Pareeksa Technologies — styles.css
   Brand: Quiet Precision. Geist + Geist Mono. Institutional blue + ink.
   Fluid, intrinsic, responsive ~280px → 4K. Light + dark.
   ========================================================================= */

/* ---- Fonts (self-hosted, variable) ------------------------------------- */
@font-face {
  font-family: "Geist";
  src: url("fonts/Geist-variable.woff2") format("woff2");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Geist Mono";
  src: url("fonts/GeistMono-variable.woff2") format("woff2");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}
/* Devanagari fallback — Geist is Latin-only. Subset to परीक्षा; gated by
   unicode-range so it loads only when Devanagari is on the page. */
@font-face {
  font-family: "Noto Sans Devanagari";
  src: url("fonts/NotoSansDevanagari-subset.woff2") format("woff2");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
  unicode-range: U+0900-097F, U+0964-0965, U+200C-200D, U+00A0;
}

/* ---- Tokens ------------------------------------------------------------- */
:root {
  /* Palette — light */
  --bg:        #F7F8FA;
  --surface:   #FFFFFF;
  --ink:       #16181D;
  --muted:     #626875;
  --hairline:  #E6E8EC;
  --accent:    #1D4ED8;
  --accent-2:  #1D4ED8;
  --btn-bg:    #1D4ED8;
  --btn-bg-h:  #1A44BD;
  --btn-fg:    #FFFFFF;
  --ring:      #1D4ED8;
  --hero-mark: rgba(22, 24, 29, 0.045);
  --card-hover-shadow: 0 1px 0 rgba(22,24,29,.04), 0 12px 28px -16px rgba(22,24,29,.18);
  --header-bg: rgba(247, 248, 250, 0.82);

  /* Radius */
  --r-sm: 4px;
  --r-md: 8px;
  --r-lg: 12px;

  /* Fluid type */
  --fs-caption: clamp(0.75rem, 0.72rem + 0.12vw, 0.82rem);
  --fs-small:   clamp(0.82rem, 0.79rem + 0.16vw, 0.9rem);
  --fs-body:    clamp(1rem, 0.96rem + 0.2vw, 1.1rem);
  --fs-lead:    clamp(1.1rem, 1.02rem + 0.48vw, 1.4rem);
  --fs-h4:      clamp(1.1rem, 1.04rem + 0.3vw, 1.3rem);
  --fs-h3:      clamp(1.2rem, 1.08rem + 0.5vw, 1.55rem);
  --fs-h2:      clamp(1.7rem, 1.28rem + 1.9vw, 2.9rem);
  --fs-h1:      clamp(2.4rem, 1.35rem + 4.4vw, 5.25rem);
  --fs-script:  clamp(3.4rem, 1.9rem + 7vw, 7.5rem);

  /* Fluid space */
  --gutter:     clamp(1.15rem, 0.7rem + 2.1vw, 2.5rem);
  --section-y:  clamp(3.5rem, 2.1rem + 6vw, 8rem);
  --maxw:       1200px;

  --ease: cubic-bezier(.22, .61, .36, 1);
  color-scheme: light;
}

[data-theme="dark"] {
  --bg:        #0E0F13;
  --surface:   #16181D;
  --ink:       #E6E8EC;
  --muted:     #9AA1AE;
  --hairline:  #262A33;
  --accent:    #7CA0FF;
  --accent-2:  #6E97FF;
  --btn-bg:    #2C57E6;
  --btn-bg-h:  #3C66F0;
  --btn-fg:    #FFFFFF;
  --ring:      #7CA0FF;
  --hero-mark: rgba(124, 160, 255, 0.07);
  --card-hover-shadow: 0 0 0 rgba(0,0,0,0), 0 18px 40px -22px rgba(0,0,0,.7);
  --header-bg: rgba(14, 15, 19, 0.8);
  color-scheme: dark;
}

/* Larger screens: grow the content frame and scale the rem system up so big
   monitors feel designed-for (more presence), not like a small centered island. */
@media (min-width: 1600px) { :root { --maxw: 1360px; } }
@media (min-width: 1920px) { :root { font-size: 17px; --maxw: 1500px; } }
@media (min-width: 2400px) { :root { font-size: 19px; --maxw: 1680px; } }
@media (min-width: 3200px) { :root { font-size: 22px; --maxw: 1920px; } }
@media (min-width: 4400px) { :root { font-size: 26px; --maxw: 2200px; } }

/* ---- Reset -------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  font-family: "Geist", "Noto Sans Devanagari", system-ui, -apple-system, sans-serif;
  font-size: var(--fs-body);
  line-height: 1.6;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  font-feature-settings: "cv01", "ss01";
  overflow-x: clip;
  scroll-padding-top: 5rem;
}
html { scroll-padding-top: 5rem; }

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
::selection { background: var(--accent); color: #fff; }

.mono { font-family: "Geist Mono", ui-monospace, monospace; font-feature-settings: "tnum"; }

/* Skip link */
.skip {
  position: absolute; left: -999px; top: 0; z-index: 200;
  background: var(--btn-bg); color: #fff; padding: .6rem 1rem; border-radius: 0 0 var(--r-md) 0;
}
.skip:focus { left: 0; }

.sprite { position: absolute; width: 0; height: 0; overflow: hidden; }

/* ---- Layout primitives -------------------------------------------------- */
.wrap {
  width: min(100% - (var(--gutter) * 2), var(--maxw));
  margin-inline: auto;
}
.section { padding-block: var(--section-y); }
.section-alt { background: var(--surface); }

.eyebrow {
  font-family: "Geist Mono", monospace;
  font-size: var(--fs-caption);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 500;
}

.section-head { max-width: 46rem; margin-bottom: clamp(2rem, 1.2rem + 2.4vw, 3.5rem); }
.section-title {
  font-size: var(--fs-h2);
  line-height: 1.05;
  letter-spacing: -0.025em;
  font-weight: 600;
  margin-top: .7rem;
}
.section-lead {
  font-size: var(--fs-lead);
  color: var(--muted);
  margin-top: 1.1rem;
  line-height: 1.5;
  max-width: 42rem;
}

/* ---- Buttons ------------------------------------------------------------ */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .55em;
  min-height: 44px;
  padding: .72em 1.25em;
  border: 1px solid transparent;
  border-radius: var(--r-md);
  font: inherit;
  font-size: var(--fs-small);
  font-weight: 500;
  letter-spacing: -0.01em;
  cursor: pointer;
  transition: background-color .18s var(--ease), border-color .18s var(--ease),
              color .18s var(--ease), transform .18s var(--ease);
  white-space: nowrap;
}
.btn-ico { width: 1.15em; height: 1.15em; flex: none; }
.btn-primary { background: var(--btn-bg); color: var(--btn-fg); }
.btn-primary:hover { background: var(--btn-bg-h); }
.btn-secondary { background: transparent; color: var(--ink); border-color: var(--hairline); }
.btn-secondary:hover { border-color: var(--accent); color: var(--accent); }
.btn-ghost { background: transparent; color: var(--ink); padding-inline: .4em; }
.btn-ghost .btn-ico { transition: transform .2s var(--ease); }
.btn-ghost:hover { color: var(--accent); }
.btn-ghost:hover .btn-ico { transform: translateX(3px); }
.btn:active { transform: translateY(1px); }
.btn-on-blue { background: #fff; color: #1D4ED8; }
.btn-on-blue:hover { background: rgba(255, 255, 255, .9); }
.btn-ghost-blue { background: transparent; color: #fff; border-color: rgba(255, 255, 255, .45); }
.btn-ghost-blue:hover { border-color: #fff; background: rgba(255, 255, 255, .1); }

/* Brand & press band — reversed on brand blue */
.brand-band { position: relative; overflow: hidden; background: var(--accent); color: #fff; padding-block: clamp(3.5rem, 2rem + 6vw, 7rem); }
.brand-band-inner { position: relative; z-index: 1; }
.brand-band-copy { max-width: 44rem; }
.brand-band .eyebrow { color: rgba(255, 255, 255, .75); }
.brand-band .section-title { color: #fff; }
.brand-band .section-lead { color: rgba(255, 255, 255, .85); }
.brand-band-nib { position: absolute; z-index: 0; right: clamp(-90px, -1vw, 2rem); top: 50%; transform: translateY(-50%); height: clamp(230px, 26vw, 430px); width: auto; aspect-ratio: 1152 / 1488; color: rgba(255, 255, 255, .14); pointer-events: none; }
@media (max-width: 760px) { .brand-band-nib { right: -130px; } }

/* ---- Header ------------------------------------------------------------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: var(--header-bg);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--hairline);
}
.header-inner {
  display: flex; align-items: center; gap: 1rem;
  height: clamp(56px, 52px + 1vw, 68px);
}

.lockup { display: inline-flex; align-items: center; gap: .42em; color: var(--ink); flex: none; margin-right: auto; }
.lockup-mark { height: 1.62em; width: auto; aspect-ratio: 1152 / 1488; color: var(--ink); transform: translateY(-0.08em); }
.lockup-word { font-size: 1.18rem; font-weight: 600; letter-spacing: -0.02em; }

.nav { display: flex; gap: clamp(1rem, .4rem + 1.4vw, 2rem); }
.nav a {
  font-size: var(--fs-small); color: var(--muted); font-weight: 450;
  padding: .4rem 0; position: relative; transition: color .15s var(--ease);
}
.nav a::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -2px; height: 1.5px;
  background: var(--accent); transform: scaleX(0); transform-origin: left; transition: transform .2s var(--ease);
}
.nav a:hover { color: var(--ink); }
.nav a:hover::after { transform: scaleX(1); }

.header-actions { display: flex; align-items: center; gap: .5rem; }

.theme-toggle {
  display: inline-grid; place-items: center;
  width: 40px; height: 40px; border-radius: var(--r-md);
  background: transparent; border: 1px solid transparent; color: var(--muted); cursor: pointer;
  transition: color .15s var(--ease), background-color .15s var(--ease), border-color .15s;
}
.theme-toggle:hover { color: var(--ink); border-color: var(--hairline); }
.theme-toggle svg { width: 19px; height: 19px; }
.i-sun { display: none; }
.i-moon { display: block; }
[data-theme="dark"] .i-sun { display: block; }
[data-theme="dark"] .i-moon { display: none; }

.menu-toggle {
  display: none; width: 42px; height: 42px; border: 1px solid var(--hairline);
  border-radius: var(--r-md); background: transparent; cursor: pointer; padding: 0;
  flex-direction: column; gap: 4px; align-items: center; justify-content: center;
}
.menu-toggle span { width: 18px; height: 1.6px; background: var(--ink); transition: transform .2s var(--ease), opacity .2s; }
.menu-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(5.6px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.menu-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-5.6px) rotate(-45deg); }

.mobile-nav {
  display: none; flex-direction: column;
  border-top: 1px solid var(--hairline);
  padding: .5rem var(--gutter) 1.1rem;
  background: var(--header-bg);
  -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px);
}
.mobile-nav[hidden] { display: none; }
.mobile-nav.open { display: flex; }
.mobile-nav a { padding: .85rem .2rem; font-size: 1.05rem; color: var(--ink); border-bottom: 1px solid var(--hairline); }
.mobile-nav a:last-child { border-bottom: 0; }
.mobile-nav .mobile-cta { color: var(--accent); font-weight: 500; }

/* ---- Hero --------------------------------------------------------------- */
.hero { position: relative; overflow: hidden; isolation: isolate; }
.hero-inner { padding-block: clamp(3.5rem, 2rem + 8vw, 9rem); position: relative; z-index: 1; }
.hero-mark {
  position: absolute; z-index: 0; color: var(--hero-mark);
  height: clamp(440px, 58vw, 1040px); width: auto; aspect-ratio: 1152 / 1488;
  right: clamp(-200px, -9vw, -80px); top: 50%; transform: translateY(-50%);
  pointer-events: none;
  -webkit-mask-image: linear-gradient(to left, #000 45%, transparent 96%);
          mask-image: linear-gradient(to left, #000 45%, transparent 96%);
}
/* The motif lives in the right whitespace on desktop; on narrower screens the
   text goes full-width, so hide it rather than let it sit behind the copy. */
@media (max-width: 1024px) { .hero-mark { display: none; } }

/* Large monitors: more vertical presence and a slightly more confident nib */
@media (min-width: 1600px) {
  .hero-inner { padding-block: clamp(6rem, 3rem + 5vw, 12rem); }
  .hero-lead { margin-top: 1.8rem; }
  .hero-mark { height: clamp(720px, 46vw, 1320px); color: rgba(22, 24, 29, 0.055); }
}
@media (min-width: 1600px) { [data-theme="dark"] .hero-mark { color: rgba(124, 160, 255, 0.085); } }

.hero-title {
  font-size: var(--fs-h1);
  line-height: 0.98;
  letter-spacing: -0.04em;
  font-weight: 600;
  margin-top: 1.1rem;
  max-width: 16ch;
}
.hero-lead {
  font-size: var(--fs-lead);
  color: var(--muted);
  margin-top: 1.5rem;
  max-width: 40rem;
  line-height: 1.5;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 2.2rem; }
.hero-proof {
  list-style: none; padding: 0; display: flex; flex-wrap: wrap; gap: .6rem 1.5rem;
  margin-top: 2.6rem; font-family: "Geist Mono", monospace; font-size: var(--fs-caption);
  color: var(--muted); letter-spacing: .01em;
}
.hero-proof li { position: relative; padding-left: 1.1rem; }
.hero-proof li::before {
  content: ""; position: absolute; left: 0; top: .5em; width: 6px; height: 6px;
  border-radius: 50%; background: var(--accent);
}

/* ---- Cards / grids ------------------------------------------------------ */
.grid { display: grid; gap: clamp(.9rem, .5rem + 1.3vw, 1.5rem); }
.grid-exam { grid-template-columns: repeat(2, minmax(0, 1fr)); }

.card {
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: var(--r-lg);
  padding: clamp(1.3rem, 1rem + 1.2vw, 2.1rem);
  display: flex; flex-direction: column;
  transition: border-color .2s var(--ease), transform .2s var(--ease), box-shadow .2s var(--ease);
}
.section-alt .card { background: var(--bg); }
.card:hover { border-color: color-mix(in srgb, var(--accent) 55%, var(--hairline)); transform: translateY(-3px); box-shadow: var(--card-hover-shadow); }
.card-num {
  font-family: "Geist Mono", monospace; font-size: var(--fs-small); font-weight: 500;
  color: var(--accent); letter-spacing: .02em;
}
.card-title { font-size: var(--fs-h4); font-weight: 600; letter-spacing: -0.015em; margin-top: .9rem; line-height: 1.25; text-wrap: balance; }
.card-lg .card-title { font-size: var(--fs-h3); }
.card-body { color: var(--muted); margin-top: .6rem; font-size: var(--fs-small); line-height: 1.6; }
.card-lg .card-body { font-size: var(--fs-body); }
.hero-lead, .section-lead, .card-body, .prose { text-wrap: pretty; }

/* Capabilities — editorial: a pinned category aside + a list of icon rows */
.cap-block { display: grid; grid-template-columns: minmax(0, 21rem) minmax(0, 1fr); gap: clamp(2rem, 1rem + 5vw, 6rem); align-items: start; }
.cap-block + .cap-block { margin-top: clamp(2.5rem, 1.5rem + 4vw, 5rem); padding-top: clamp(2.5rem, 1.5rem + 4vw, 5rem); border-top: 1px solid var(--hairline); }
.cap-aside { position: sticky; top: clamp(5rem, 4rem + 3vw, 7.5rem); align-self: start; }
.cap-aside-tag { display: inline-block; font-family: "Geist Mono", monospace; font-size: var(--fs-caption); letter-spacing: .14em; text-transform: uppercase; color: var(--accent); font-weight: 500; }
.cap-aside-title { font-size: var(--fs-h3); font-weight: 600; letter-spacing: -0.02em; line-height: 1.1; margin-top: .9rem; }
.cap-aside-desc { color: var(--muted); margin-top: 1rem; font-size: var(--fs-small); line-height: 1.6; max-width: 30ch; }

.cap-list { list-style: none; margin: 0; padding: 0; }
.cap-item { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: clamp(1rem, .6rem + 1vw, 1.5rem); padding: clamp(1.2rem, 1rem + .7vw, 1.75rem) 0; border-top: 1px solid var(--hairline); }
.cap-item:first-child { border-top: 0; padding-top: 0; }
.cap-icon { width: 46px; height: 46px; flex: none; display: grid; place-items: center; border: 1px solid var(--hairline); border-radius: 11px; color: var(--accent); background: var(--surface); transition: border-color .25s var(--ease), background-color .25s var(--ease), transform .25s var(--ease); }
.section-alt .cap-icon { background: var(--bg); }
.cap-icon svg { width: 24px; height: 24px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.cap-item-body { max-width: 60ch; min-width: 0; }
.cap-item-head { display: flex; align-items: baseline; gap: .8rem; }
.cap-item-head h4 { font-size: var(--fs-h4); font-weight: 600; letter-spacing: -0.015em; line-height: 1.2; }
.cap-item-num { color: var(--muted); font-size: var(--fs-small); margin-left: auto; }
.cap-item-body > p { color: var(--muted); margin-top: .45rem; font-size: var(--fs-small); line-height: 1.6; max-width: 56ch; text-wrap: pretty; }
.cap-item:hover .cap-icon { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 10%, var(--surface)); transform: translateY(-2px); }
.section-alt .cap-item:hover .cap-icon { background: color-mix(in srgb, var(--accent) 12%, var(--bg)); }

/* line-icon draw-in on scroll (pathLength=1 normalises each shape) */
.js .cap-item .cap-icon svg [pathLength] { stroke-dasharray: 1; stroke-dashoffset: 1; }
.cap-item.in .cap-icon svg [pathLength] { animation: cap-draw .9s var(--ease) forwards; }
@keyframes cap-draw { to { stroke-dashoffset: 0; } }

@media (max-width: 900px) {
  .cap-block { grid-template-columns: 1fr; gap: 1.4rem; }
  .cap-aside { position: static; }
  .cap-aside-desc { max-width: 54ch; }
}

.prose { font-size: var(--fs-lead); line-height: 1.6; margin-top: 1.3rem; max-width: 40rem; color: var(--ink); }
.prose em { font-style: italic; color: var(--accent); }

/* ---- Contact ------------------------------------------------------------ */
.contact-grid { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr); gap: clamp(2rem, 1rem + 4vw, 4.5rem); align-items: start; }
.contact-intro .hero-actions { margin-top: 2rem; }
.contact-card {
  border: 1px solid var(--hairline); border-radius: var(--r-lg);
  background: var(--surface); padding: clamp(1.4rem, 1rem + 1.5vw, 2.3rem);
}
.section-alt .contact-card { background: var(--bg); }
.contact-dl { display: flex; flex-direction: column; }
.contact-row { padding-block: 1.1rem; border-top: 1px solid var(--hairline); }
.contact-row:first-child { padding-top: 0; border-top: 0; }
.contact-row dt { font-size: var(--fs-caption); text-transform: uppercase; letter-spacing: .1em; color: var(--muted); font-family: "Geist Mono", monospace; }
.contact-row dd { margin-top: .5rem; font-size: var(--fs-body); overflow-wrap: anywhere; min-width: 0; }
.contact-row dd a { transition: color .15s var(--ease); }
.contact-row dd a:hover { color: var(--accent); }
.contact-row address { font-style: normal; line-height: 1.7; color: var(--ink); }

/* ---- Footer ------------------------------------------------------------- */
.site-footer { border-top: 1px solid var(--hairline); background: var(--bg); padding-top: clamp(2.8rem, 1.8rem + 3vw, 4.5rem); }
.footer-inner { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 2rem; padding-bottom: 2.5rem; }
.footer-brand .lockup-stacked { flex-direction: column; align-items: flex-start; gap: .5rem; }
.footer-brand .lockup-mark { height: 2.4em; transform: none; }
.footer-brand .lockup-word { font-size: 1.3rem; }
.footer-tag { margin-top: 1rem; color: var(--muted); font-size: var(--fs-small); }
.footer-h { font-size: var(--fs-caption); text-transform: uppercase; letter-spacing: .12em; color: var(--muted); font-weight: 500; margin-bottom: 1rem; font-family: "Geist Mono", monospace; }
.footer-nav, .footer-contact { display: flex; flex-direction: column; gap: .65rem; font-size: var(--fs-small); }
.footer-nav a, .footer-contact a { color: var(--muted); transition: color .15s var(--ease); width: fit-content; }
.footer-nav a:hover, .footer-contact a:hover { color: var(--ink); }
.footer-address { font-style: normal; color: var(--muted); font-size: var(--fs-small); margin-top: .2rem; }
.footer-base { display: flex; justify-content: space-between; align-items: center; gap: 1rem; flex-wrap: wrap;
  border-top: 1px solid var(--hairline); padding-block: 1.5rem; color: var(--muted); font-size: var(--fs-caption); }

/* ---- Credential badges (GeM / MSME) ------------------------------------- */
/* Government badges are colourful with dark text, so they sit on a small white
   chip that stays legible in both light and dark mode. */
.creds { display: inline-flex; align-items: center; gap: .5rem; }
.cred { display: inline-grid; place-items: center; background: #fff;
  border: 1px solid var(--hairline); border-radius: 8px; padding: .3rem .55rem;
  transition: border-color .2s var(--ease), transform .2s var(--ease); }
.cred img { display: block; width: auto; }
.cred:hover { border-color: color-mix(in srgb, var(--accent) 40%, var(--hairline)); transform: translateY(-1px); }

.footer-creds { display: flex; align-items: center; flex-wrap: wrap; gap: .8rem 1.1rem;
  border-top: 1px solid var(--hairline); padding-block: 1.4rem; }
.footer-creds-label { font-family: "Geist Mono", monospace; font-size: var(--fs-caption);
  text-transform: uppercase; letter-spacing: .12em; color: var(--muted); margin-right: .2rem; }
.footer-creds .cred img { height: 42px; }

/* Trust band on the landing — a slim registrations strip below the hero */
.trust { border-block: 1px solid var(--hairline); background: var(--surface); }
.trust-inner { display: flex; align-items: center; justify-content: center; flex-wrap: wrap;
  gap: .8rem 1.6rem; padding-block: clamp(1.1rem, .8rem + 1vw, 1.75rem); }
.trust-label { font-family: "Geist Mono", monospace; font-size: var(--fs-caption);
  text-transform: uppercase; letter-spacing: .12em; color: var(--muted); }
.trust-creds .cred img { height: 46px; }
@media (max-width: 440px) { .trust-creds .cred img { height: 38px; } }

/* ---- WhatsApp float ----------------------------------------------------- */
.wa-float {
  position: fixed; z-index: 90;
  right: clamp(1rem, 2vw, 1.75rem);
  bottom: calc(clamp(1rem, 2vw, 1.75rem) + env(safe-area-inset-bottom, 0px));
  display: inline-grid; place-items: center;
  width: 56px; height: 56px;
  background: var(--btn-bg); color: #fff; border-radius: 50%;
  box-shadow: 0 6px 18px -8px rgba(22, 24, 29, .35);
  transition: opacity .25s var(--ease), transform .25s var(--ease),
              background-color .2s var(--ease), box-shadow .2s var(--ease);
}
.wa-float svg { width: 27px; height: 27px; }
.wa-float:hover { transform: translateY(-2px); background: var(--btn-bg-h); box-shadow: 0 10px 22px -8px rgba(22, 24, 29, .42); }
/* Reveal only after scrolling past the hero (JS adds .show). Without JS it stays visible. */
.js .wa-float { opacity: 0; visibility: hidden; transform: translateY(10px) scale(.92); pointer-events: none; }
.js .wa-float.show { opacity: 1; visibility: visible; transform: none; pointer-events: auto; }
.js .wa-float.show:hover { transform: translateY(-2px); }

/* ---- Reveal animation --------------------------------------------------- */
.js .reveal { opacity: 0; transform: translateY(16px); transition: opacity .6s var(--ease), transform .6s var(--ease); }
.js .reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .js .reveal { opacity: 1; transform: none; transition: none; }
  .btn, .card, .wa-float, .nav a::after { transition: none !important; }
  .js .cap-item .cap-icon svg [pathLength] { stroke-dashoffset: 0; animation: none; }
}

/* ---- Focus -------------------------------------------------------------- */
:focus-visible { outline: 2px solid var(--ring); outline-offset: 2px; border-radius: 3px; }
.btn:focus-visible { outline-offset: 3px; }

/* =========================================================================
   Responsive
   ========================================================================= */

/* Tablet / small laptop */
@media (max-width: 960px) {
  .contact-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}

/* Collapse primary nav into hamburger */
@media (max-width: 820px) {
  .nav { display: none; }
  .menu-toggle { display: flex; }
  .header-cta { display: none; }
}

/* Examination cards keep two columns on tablets, stack on phones */
@media (max-width: 680px) {
  .grid-exam { grid-template-columns: 1fr; }
}

/* Phones */
@media (max-width: 560px) {
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { width: 100%; }
  .contact-intro .hero-actions .btn, .hero .btn { width: 100%; }
  .footer-inner { grid-template-columns: 1fr; gap: 1.8rem; }
  .footer-base { justify-content: flex-start; }
}

/* Tiny phones / watch-class */
@media (max-width: 360px) {
  :root { --gutter: 1rem; }
  .lockup-word { font-size: 1.05rem; }
  .hero-proof { gap: .4rem .9rem; }
  .card { border-radius: var(--r-md); }
}

/* Landscape, very short viewports */
@media (max-height: 460px) and (orientation: landscape) {
  .hero-inner { padding-block: 2.5rem; }
  .hero-mark { height: 320px; }
}