/* ==========================================================================
   BAT LABS — design system
   Black, white, and the yellow from the original brand. One variable font
   (Archivo) used at two widths: ultra-condensed for display, normal for text.
   ========================================================================== */

:root {
  --black: #000;
  --white: #fff;
  --yellow: #F9CE45;
  --blue: #2F4FD0;
  --pad: clamp(20px, 4vw, 56px);
  --max: 1440px;
  --hdr: 72px;
  --ease: cubic-bezier(.2, .7, .2, 1);
}

*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: calc(var(--hdr) + 16px);
}

body {
  font-family: "Archivo", "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-stretch: 100%;
  font-size: 1.0625rem;
  line-height: 1.55;
  color: var(--white);
  background: var(--black);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; }
ul { padding: 0; list-style: none; }
button { font: inherit; }

:focus-visible {
  outline: 3px solid var(--yellow);
  outline-offset: 3px;
}
.on-yellow :focus-visible, .on-white :focus-visible { outline-color: #000; }

.skip {
  position: absolute; left: 12px; top: -60px; z-index: 100;
  background: var(--yellow); color: #000; padding: 10px 16px;
  border-radius: 999px; font-weight: 700; text-decoration: none;
}
.skip:focus { top: 12px; }

/* ---------- Section themes ---------- */
.on-black  { --bg: #000;           --fg: #fff; --muted: #a3a3a3;           --rule: rgba(255,255,255,.2); }
.on-yellow { --bg: var(--yellow);  --fg: #000; --muted: rgba(0,0,0,.66);   --rule: rgba(0,0,0,.28); }
.on-white  { --bg: #fff;           --fg: #000; --muted: #595959;           --rule: rgba(0,0,0,.16); }

.sec {
  background: var(--bg);
  color: var(--fg);
  padding: clamp(84px, 12vw, 180px) var(--pad);
}
.sec.tight { padding-block: clamp(56px, 8vw, 110px); }
.wrap { max-width: var(--max); margin: 0 auto; }
.muted { color: var(--muted); }

/* ---------- Type ---------- */
.display {
  font-family: "Archivo", "Arial Narrow", "Helvetica Neue", Arial, sans-serif;
  font-stretch: 62%;
  font-weight: 900;
  text-transform: uppercase;
  line-height: .88;
  letter-spacing: -.005em;
}
.h-xl { font-size: clamp(4.5rem, 16vw, 15rem); }
.h-lg { font-size: clamp(3.75rem, 11vw, 10rem); }
.h-md { font-size: clamp(2.5rem, 6.4vw, 6rem); }
.h-sm { font-size: clamp(1.9rem, 3.6vw, 3.25rem); }

.lede {
  font-size: clamp(1.2rem, 2vw, 1.65rem);
  line-height: 1.38;
  font-weight: 500;
  max-width: 32em;
}
.statement {
  font-stretch: 85%;
  font-weight: 700;
  font-size: clamp(2rem, 5.2vw, 4.75rem);
  line-height: 1.04;
  letter-spacing: -.02em;
  max-width: 20em;
}
.small { font-size: .9rem; line-height: 1.5; }
.sec-head { margin-bottom: clamp(40px, 6vw, 88px); }
.sec-head .lede { margin-top: 28px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: .95em 1.7em;
  border: 2px solid transparent;
  border-radius: 999px;
  font-weight: 700; font-size: .98rem; line-height: 1;
  text-decoration: none; cursor: pointer;
  transition: background .25s, color .25s, border-color .25s, transform .25s var(--ease);
}
.btn:active { transform: scale(.97); }
.btn-yellow { background: var(--yellow); color: #000; }
.btn-yellow:hover { background: #fff; }
.btn-black { background: #000; color: #fff; }
.btn-black:hover { background: #fff; color: #000; }
.btn-ghost { border-color: currentColor; color: #fff; }
.btn-ghost:hover { background: #fff; color: #000; border-color: #fff; }
.btn-lg { font-size: 1.15rem; padding: 1.1em 2.2em; }
.btn-row { display: flex; flex-wrap: wrap; gap: 12px; }

/* ---------- Header ---------- */
.hdr {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  height: var(--hdr);
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
  padding: 0 var(--pad);
}
/* background lives on a pseudo-element so backdrop-filter doesn't trap the fixed mobile menu */
.hdr::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: rgba(0,0,0,.72);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  backdrop-filter: saturate(180%) blur(18px);
  border-bottom: 1px solid rgba(255,255,255,.1);
}
.logo {
  position: relative; z-index: 3;
  display: inline-block;
  font-stretch: 62%; font-weight: 900; font-size: 2rem; line-height: 1;
  text-transform: uppercase; letter-spacing: .01em;
  color: var(--yellow); text-decoration: none;
  transform: skewX(-7deg);
}
.nav { margin-left: auto; }
.nav ul { display: flex; align-items: center; gap: clamp(20px, 3vw, 40px); }
.nav a {
  display: inline-block; padding: 8px 0;
  font-size: .95rem; font-weight: 500; text-decoration: none; color: #fff;
  background: linear-gradient(var(--yellow), var(--yellow)) 0 100% / 0 2px no-repeat;
  transition: background-size .3s var(--ease);
}
.nav a:hover, .nav a[aria-current="page"] { background-size: 100% 2px; }
.nav .only-mobile { display: none; }
.hdr-cta { position: relative; z-index: 3; padding: .75em 1.3em; font-size: .9rem; }

.menu-btn {
  display: none; position: relative; z-index: 3;
  width: 44px; height: 44px; background: none; border: 0; cursor: pointer; color: #fff;
}
.menu-btn span {
  position: absolute; left: 10px; right: 10px; height: 2px; background: currentColor;
  transition: transform .3s var(--ease), top .3s var(--ease);
}
.menu-btn span:nth-child(1) { top: 17px; }
.menu-btn span:nth-child(2) { top: 25px; }
.menu-open .menu-btn span:nth-child(1) { top: 21px; transform: rotate(45deg); }
.menu-open .menu-btn span:nth-child(2) { top: 21px; transform: rotate(-45deg); }

@media (max-width: 820px) {
  .menu-btn { display: block; }
  .hdr-cta { display: none; }
  .nav {
    position: fixed; inset: 0; z-index: 2; margin: 0;
    background: #000;
    display: flex; align-items: center;
    padding: var(--hdr) var(--pad) 40px;
    visibility: hidden; opacity: 0;
    transition: opacity .3s, visibility .3s;
  }
  .menu-open .nav { visibility: visible; opacity: 1; }
  .menu-open { overflow: hidden; }
  .nav ul { flex-direction: column; align-items: flex-start; gap: 6px; }
  .nav a {
    font-stretch: 62%; font-weight: 900; text-transform: uppercase;
    font-size: clamp(3.5rem, 18vw, 6rem); line-height: 1; padding: 0;
  }
  .nav .only-mobile { display: block; }
}

/* ---------- Hero (home) ---------- */
.hero {
  position: relative; isolation: isolate; overflow: hidden;
  min-height: 100svh;
  display: flex; align-items: flex-end;
  padding: calc(var(--hdr) + 40px) var(--pad) clamp(36px, 5vw, 72px);
  background: #000; color: #fff;
}
.spiral {
  position: absolute; z-index: 0;
  right: -16vmin; top: 50%;
  width: 135vmin; height: 135vmin;
  transform: translateY(-46%);
  -webkit-mask-image: linear-gradient(100deg, transparent 12%, #000 52%);
          mask-image: linear-gradient(100deg, transparent 12%, #000 52%);
}
.spiral svg { width: 100%; height: 100%; animation: spin 80s linear infinite; }
.spiral path { fill: none; stroke: var(--yellow); stroke-width: 34; }
@keyframes spin { to { transform: rotate(360deg); } }

.hero-in { position: relative; width: 100%; max-width: var(--max); margin: 0 auto; }
.hero h1 {
  font-size: clamp(4.5rem, min(19vw, 30vh), 17rem);
  /* white on black stays white; white over a yellow stripe flips to the brand blue */
  mix-blend-mode: difference; color: #fff;
}
.hero-foot {
  display: grid; grid-template-columns: 1fr auto; gap: 32px; align-items: end;
  margin-top: clamp(28px, 4vw, 56px);
}
.hero .lede { color: #fff; }

@media (max-width: 700px) {
  .spiral {
    right: auto; left: 50%; top: 4%;
    width: 150vw; height: 150vw;
    transform: translateX(-50%);
    -webkit-mask-image: linear-gradient(180deg, #000 30%, transparent 78%);
            mask-image: linear-gradient(180deg, #000 30%, transparent 78%);
  }
  .hero-foot { grid-template-columns: 1fr; }
  .hero h1 { font-size: clamp(4.5rem, 27vw, 9rem); }
}

/* ---------- Page hero (inner pages) ---------- */
.page-hero {
  background: var(--bg); color: var(--fg);
  padding: calc(var(--hdr) + clamp(64px, 10vw, 150px)) var(--pad) clamp(56px, 8vw, 110px);
}
.page-hero .lede { margin-top: 32px; }

/* ---------- Stats band ---------- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--pad); }
.stat { border-top: 2px solid #000; padding-top: 18px; }
.stat strong { display: block; }
.stat span { display: block; margin-top: 10px; font-weight: 600; max-width: 14em; line-height: 1.3; }
.footnotes { margin-top: clamp(32px, 4vw, 56px); color: var(--muted); max-width: 60em; }
@media (max-width: 820px) { .stats { grid-template-columns: repeat(2, 1fr); row-gap: 36px; } }

/* ---------- Service rows ---------- */
.rows { border-top: 1px solid var(--rule); }
.row {
  display: grid; grid-template-columns: 1.5fr 1fr; gap: var(--pad); align-items: center;
  padding: clamp(20px, 2.6vw, 36px) 0;
  border-bottom: 1px solid var(--rule);
  text-decoration: none;
  transition: background .3s var(--ease), color .3s var(--ease), padding .3s var(--ease);
}
.row p { color: var(--muted); transition: color .3s; max-width: 26em; }
.row:hover, .row:focus-visible { background: var(--yellow); color: #000; padding-inline: clamp(16px, 2vw, 28px); }
.row:hover p, .row:focus-visible p { color: #000; }
@media (max-width: 820px) { .row { grid-template-columns: 1fr; gap: 8px; } }

/* ---------- Calculator ---------- */
.calc-grid { display: grid; grid-template-columns: 5fr 6fr; gap: clamp(32px, 6vw, 96px); align-items: center; }
.calc {
  background: #000; color: #fff;
  border-radius: 32px; padding: clamp(28px, 4vw, 56px);
}
.calc-top { display: flex; justify-content: space-between; align-items: baseline; gap: 16px; flex-wrap: wrap; }
.calc label { font-weight: 600; }
.calc output { font-stretch: 62%; font-weight: 900; font-size: clamp(2.4rem, 5vw, 3.8rem); line-height: 1; }
.calc input[type=range] {
  -webkit-appearance: none; appearance: none;
  width: 100%; height: 36px; margin: 22px 0 36px; background: transparent; cursor: pointer;
  --p: 4%;
}
.calc input[type=range]::-webkit-slider-runnable-track {
  height: 6px; border-radius: 6px;
  background: linear-gradient(90deg, var(--yellow) var(--p), #333 var(--p));
}
.calc input[type=range]::-moz-range-track { height: 6px; border-radius: 6px; background: #333; }
.calc input[type=range]::-moz-range-progress { height: 6px; border-radius: 6px; background: var(--yellow); }
.calc input[type=range]::-webkit-slider-thumb {
  -webkit-appearance: none; width: 30px; height: 30px; margin-top: -12px;
  border-radius: 50%; background: #fff; border: 0; box-shadow: 0 0 0 6px rgba(249,206,69,.25);
}
.calc input[type=range]::-moz-range-thumb {
  width: 30px; height: 30px; border-radius: 50%; background: #fff; border: 0;
}
.calc-res { display: grid; gap: 22px; border-top: 1px solid rgba(255,255,255,.2); padding-top: 28px; }
.calc-res span { display: block; color: #a3a3a3; font-weight: 600; font-size: .95rem; }
.calc-res strong { display: block; font-stretch: 62%; font-weight: 900; font-size: clamp(2.8rem, 6.5vw, 5.2rem); line-height: 1; text-transform: uppercase; }
.calc-res .hi strong { color: var(--yellow); }
.calc-note { margin-top: 28px; color: #a3a3a3; }
@media (max-width: 900px) { .calc-grid { grid-template-columns: 1fr; } }

/* ---------- Results ---------- */
.results { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--pad); }
.result { border-top: 2px solid currentColor; padding-top: 22px; }
.result p { margin-top: 14px; max-width: 22em; }
.result .who { margin-top: 18px; font-weight: 700; }
.result .who span { font-weight: 400; color: var(--muted); }
@media (max-width: 820px) { .results { grid-template-columns: 1fr; gap: 48px; } }

/* big result rows (work page) */
.result-rows { border-top: 1px solid var(--rule); }
.result-row {
  display: grid; grid-template-columns: 5fr 7fr; gap: var(--pad); align-items: center;
  padding: clamp(28px, 4vw, 56px) 0; border-bottom: 1px solid var(--rule);
}
.result-row p { max-width: 28em; }
.result-row .who { margin-top: 14px; font-weight: 700; }
@media (max-width: 820px) { .result-row { grid-template-columns: 1fr; gap: 10px; } }

/* ---------- Clients ---------- */
.clients {
  display: grid; grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--rule); border-left: 1px solid var(--rule);
}
.client {
  display: flex; align-items: center; justify-content: center; text-align: center;
  min-height: clamp(140px, 17vw, 240px); padding: 20px;
  border-right: 1px solid var(--rule); border-bottom: 1px solid var(--rule);
  font-stretch: 62%; font-weight: 900; text-transform: uppercase; line-height: .95;
  font-size: clamp(1.9rem, 3.8vw, 3.6rem);
  transition: background .3s var(--ease), color .3s;
}
.client:hover { background: var(--yellow); color: #000; }
.client.more { color: var(--muted); font-weight: 500; font-stretch: 100%; text-transform: none; font-size: clamp(1.1rem, 1.6vw, 1.4rem); }
@media (max-width: 900px) { .clients { grid-template-columns: repeat(2, 1fr); } }

/* ---------- Testimonials ---------- */
.quotes { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(36px, 5vw, 72px) var(--pad); }
.quote { border-top: 1px solid var(--rule); padding-top: 24px; }
.quote .stars { letter-spacing: .15em; font-size: 1.1rem; margin-bottom: 14px; }
.quote blockquote { font-size: 1.12rem; line-height: 1.5; font-weight: 500; }
.quote figcaption { margin-top: 18px; font-weight: 700; }
@media (max-width: 960px) { .quotes { grid-template-columns: 1fr 1fr; } }
@media (max-width: 640px) { .quotes { grid-template-columns: 1fr; } }

/* ---------- CTA band ---------- */
.cta { text-align: left; }
.cta .btn { margin-top: clamp(32px, 4vw, 56px); }

/* ---------- Services page ---------- */
.svc { display: grid; grid-template-columns: 5fr 7fr; gap: var(--pad); padding: clamp(56px, 8vw, 120px) 0; border-top: 1px solid var(--rule); }
.svc:first-child { border-top: 0; padding-top: 0; }
.svc-name { position: sticky; top: calc(var(--hdr) + 28px); align-self: start; }
.svc .lede { margin-bottom: 36px; }
.svc ul { border-top: 1px solid var(--rule); }
.svc li { padding: 14px 0; border-bottom: 1px solid var(--rule); font-weight: 500; }
.svc .btn { margin-top: 32px; }
@media (max-width: 820px) {
  .svc { grid-template-columns: 1fr; gap: 28px; }
  .svc-name { position: static; }
}

.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--pad); }
.step { border-top: 2px solid var(--yellow); padding-top: 20px; }
.step .n { color: var(--yellow); font-weight: 700; font-size: .95rem; margin-bottom: 10px; display: block; }
.step p { margin-top: 12px; color: var(--muted); }
@media (max-width: 900px) { .steps { grid-template-columns: 1fr 1fr; row-gap: 44px; } }
@media (max-width: 520px) { .steps { grid-template-columns: 1fr; } }

/* ---------- About ---------- */
.founder { display: grid; grid-template-columns: 5fr 7fr; gap: clamp(32px, 6vw, 96px); align-items: start; }
.portrait {
  position: relative; aspect-ratio: 4 / 5; overflow: hidden;
  background: var(--yellow); border-radius: 32px;
  display: flex; align-items: center; justify-content: center;
  font-stretch: 62%; font-weight: 900; font-size: clamp(8rem, 20vw, 16rem); color: #000; line-height: 1;
}
.portrait img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.founder-meta { margin-top: 22px; }
.founder-meta strong { display: block; font-size: 1.35rem; }
.founder-copy p { margin-bottom: 1.2em; max-width: 34em; }
.founder-copy p:last-child { margin-bottom: 0; }
.founder-copy .lede { margin-bottom: 1.2em; }

.industries { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 8px; }
.industries li { border: 1.5px solid currentColor; border-radius: 999px; padding: .55em 1.1em; font-weight: 600; }

.beliefs .row { cursor: default; }
.beliefs .row:hover { background: transparent; color: inherit; padding-inline: 0; }
.beliefs .row:hover p { color: var(--muted); }

.timeline { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--pad); }
.tl { border-top: 2px solid var(--yellow); padding-top: 20px; }
.tl p { margin-top: 12px; color: var(--muted); max-width: 20em; }
@media (max-width: 820px) { .timeline { grid-template-columns: 1fr; gap: 40px; } .founder { grid-template-columns: 1fr; } .portrait { max-width: 420px; } }

/* ---------- Contact ---------- */
.contact { display: grid; grid-template-columns: 5fr 7fr; gap: clamp(40px, 7vw, 120px); align-items: start; }
.contact-side { position: sticky; top: calc(var(--hdr) + 40px); }
.contact-side .lede { margin-top: 28px; }
.contact-side ul { margin-top: 36px; border-top: 1px solid var(--rule); }
.contact-side li { padding: 12px 0; border-bottom: 1px solid var(--rule); font-weight: 500; }
@media (max-width: 900px) { .contact { grid-template-columns: 1fr; } .contact-side { position: static; } }

.field { display: grid; gap: 6px; margin-bottom: 30px; }
.field > label, .legend { font-weight: 600; font-size: .95rem; }
.field .opt { color: var(--muted); font-weight: 400; }
.field input, .field select, .field textarea {
  width: 100%; background: transparent; color: #fff;
  border: 0; border-bottom: 1.5px solid rgba(255,255,255,.35); border-radius: 0;
  padding: .55em 0; font: inherit; font-size: 1.3rem; outline: none;
  transition: border-color .2s;
}
.field textarea { resize: vertical; min-height: 130px; line-height: 1.4; }
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--yellow); }
.field input::placeholder, .field textarea::placeholder { color: #6b6b6b; }
.field select { appearance: none; -webkit-appearance: none; cursor: pointer;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='9' fill='none' stroke='%23fff' stroke-width='2'%3E%3Cpath d='m1 1 6 6 6-6'/%3E%3C/svg%3E") right 4px center no-repeat; }
.field select option { color: #000; }
.two { display: grid; grid-template-columns: 1fr 1fr; gap: 0 var(--pad); }
@media (max-width: 640px) { .two { grid-template-columns: 1fr; } }

fieldset { border: 0; padding: 0; min-width: 0; margin: 0 0 34px; }
.chips { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 12px; }
.chip { position: relative; }
.chip input { position: absolute; opacity: 0; inset: 0; width: 100%; height: 100%; margin: 0; cursor: pointer; }
.chip span {
  display: inline-block; padding: .65em 1.15em;
  border: 1.5px solid rgba(255,255,255,.35); border-radius: 999px; font-weight: 500;
  transition: background .2s, color .2s, border-color .2s;
}
.chip:hover span { border-color: #fff; }
.chip input:checked + span { background: var(--yellow); border-color: var(--yellow); color: #000; font-weight: 700; }
.chip input:focus-visible + span { outline: 3px solid #fff; outline-offset: 3px; }

.form-msg { margin-top: 18px; min-height: 1.5em; color: var(--yellow); font-weight: 600; }
.hp { position: absolute; left: -9999px; }

/* ---------- Footer ---------- */
.ftr { background: #000; color: #fff; padding: clamp(64px, 8vw, 110px) var(--pad) 32px; border-top: 1px solid rgba(255,255,255,.14); }
.ftr-top { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: var(--pad); }
.ftr .logo { font-size: clamp(3.5rem, 9vw, 7rem); }
.ftr-tag { margin-top: 18px; color: #a3a3a3; max-width: 22em; }
.ftr h2 { font-size: .9rem; font-weight: 600; color: #a3a3a3; margin-bottom: 14px; }
.ftr li a { display: inline-block; padding: 5px 0; text-decoration: none; font-weight: 500; }
.ftr li a:hover { color: var(--yellow); }
.ftr-bot { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; margin-top: clamp(48px, 7vw, 96px); padding-top: 22px; border-top: 1px solid rgba(255,255,255,.14); color: #a3a3a3; font-size: .9rem; }
@media (max-width: 720px) { .ftr-top { grid-template-columns: 1fr 1fr; } .ftr-top > div:first-child { grid-column: 1 / -1; } }

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .spiral svg { animation: none; }
  * { transition-duration: .01ms !important; }
}