/* iBuy Industrial — corporate system
   White and cool grey for reading, deep navy for weight. Helvetica Neue LT Pro (kit pul2dxe):
   Roman for headlines and reading, Bold for titles and labels. Centred 1440px container. */

:root {
  --white: #FFFFFF;
  --mist: #F2F4F5;
  --navy: #0F1C27;
  --navy-deep: #09131B;
  --ink: #0F1C27;
  --body: #46525C;
  --muted: #6E7A84;
  --line: rgba(15, 28, 39, .12);
  --line-strong: rgba(15, 28, 39, .9);
  --on-dark: #FFFFFF;
  --on-dark-soft: rgba(255, 255, 255, .7);
  --line-dark: rgba(255, 255, 255, .16);
  --sky: #5CC8E8;

  --sans: "helvetica-neue-lt-pro", "Helvetica Neue", Helvetica, Arial, sans-serif;

  --max: 1440px;
  --gutter: clamp(20px, 4vw, 64px);
  --col-gap: clamp(24px, 3vw, 48px);
  --section: clamp(88px, 9vw, 160px);
  --nav-h: 84px;

  --h1: clamp(40px, 4.6vw, 82px);
  --h2: clamp(30px, 2.9vw, 50px);
  --h3: clamp(18px, 1.25vw, 21px);
  --lead: clamp(18px, 1.3vw, 21px);
  --body-size: 17px;
  --small: 15px;
  --label: 14px;

  --vh: 100vh;
}
@supports (height: 100svh) { :root { --vh: 100svh; } }

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--white);
  color: var(--ink);
  font: 400 var(--body-size)/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img, svg, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
h1, h2, h3, p, ul, ol, dl, dd, figure { margin: 0; padding: 0; }
ul, ol { list-style: none; }
h1, h2 { font-weight: 400; text-wrap: balance; }
h3 { font-weight: 700; }
p { text-wrap: pretty; }
:focus-visible { outline: 2px solid currentColor; outline-offset: 4px; }

.skip { position: absolute; left: 16px; top: -100px; z-index: 100; background: var(--navy); color: var(--on-dark); padding: 12px 16px; }
.skip:focus { top: 12px; }

.container {
  width: 100%;
  max-width: calc(var(--max) + 2 * var(--gutter));
  margin-inline: auto;
  padding-left: max(var(--gutter), env(safe-area-inset-left));
  padding-right: max(var(--gutter), env(safe-area-inset-right));
}
.grid { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: var(--col-gap); }
.mist { background: var(--mist); }
.navy { background: var(--navy); color: var(--on-dark); }

/* label: a short sentence-case line */
.label { display: flex; align-items: center; gap: 10px; font: 400 var(--label)/1.2 var(--sans); letter-spacing: .01em; color: var(--ink); }
.label--light { color: var(--on-dark); }
.lead { font-size: var(--lead); line-height: 1.55; color: var(--body); }
.navy .lead { color: var(--on-dark-soft); }
.link { display: inline-flex; align-items: center; gap: .5em; font: 700 var(--small)/1.2 var(--sans); padding-block: 14px; border-bottom: 1px solid currentColor; padding-bottom: 6px; padding-top: 14px; }
.link span { transition: transform .3s ease; }
.link:hover span { transform: translateX(4px); }
.link--light { color: var(--on-dark); }
.link--quiet { border-bottom-color: transparent; font-weight: 400; }
.link--quiet:hover { border-bottom-color: currentColor; }

/* section head: title block left, lead right, bottom-aligned */
.head { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: var(--col-gap); align-items: end; margin-bottom: clamp(48px, 5vw, 80px); }
.head > div { grid-column: 1 / 7; }
.head > .lead { grid-column: 8 / 13; }
.head h2 { margin-top: 20px; font-size: var(--h2); line-height: 1.08; letter-spacing: -.025em; }

/* ---------- navigation ---------- */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  padding-top: env(safe-area-inset-top);
  color: var(--on-dark);
  transition: background-color .35s ease, color .35s ease, box-shadow .35s ease, transform .45s cubic-bezier(.2, .7, .2, 1);
}
.nav__inner {
  display: flex; align-items: center; gap: clamp(24px, 3vw, 48px);
  height: var(--nav-h);
  max-width: calc(var(--max) + 2 * var(--gutter)); margin-inline: auto;
  padding-left: max(var(--gutter), env(safe-area-inset-left));
  padding-right: max(var(--gutter), env(safe-area-inset-right));
}
.nav.is-solid { background: var(--white); color: var(--ink); box-shadow: 0 1px 0 var(--line); }
.nav.is-hidden { transform: translateY(-100%); }
.nav__logo { margin-right: auto; display: block; }
.wordmark { height: 44px; width: auto; }
.nav__links { display: flex; gap: clamp(20px, 2.2vw, 36px); }
.nav__links a { font: 400 var(--small)/1 var(--sans); padding-block: 16px; opacity: .85; transition: opacity .2s; }
.nav__links a:hover { opacity: 1; }
.nav__contact { font: 700 var(--small)/1 var(--sans); padding-block: 16px; }
.nav__menu { display: none; font: 700 var(--small)/1 var(--sans); padding: 16px 0; }

.menu {
  position: fixed; inset: 0; z-index: 40; background: var(--white); color: var(--ink);
  display: flex; flex-direction: column; justify-content: space-between;
  padding: calc(var(--nav-h) + 24px) max(var(--gutter), env(safe-area-inset-right)) max(32px, env(safe-area-inset-bottom)) max(var(--gutter), env(safe-area-inset-left));
}
.menu[hidden] { display: none; }
.menu nav { display: flex; flex-direction: column; }
.menu nav a { font: 400 clamp(30px, 8vw, 48px)/1.15 var(--sans); letter-spacing: -.025em; padding-block: 10px; border-bottom: 1px solid var(--line); }
.menu__foot { display: flex; flex-direction: column; gap: 2px; font-size: var(--lead); }
.menu__foot a { padding-block: 8px; }

/* ---------- hero ---------- */
.hero { position: relative; height: var(--vh); min-height: 600px; overflow: hidden; background: var(--navy); color: var(--on-dark); }
.hero__media, .hero__media img, .hero video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.hero__video { opacity: 0; transition: opacity .6s ease; }
.hero__video.is-playing { opacity: 1; }
.hero__shade {
  position: absolute; inset: 0;
  background:
    linear-gradient(180deg, rgba(9, 19, 27, .5) 0%, rgba(9, 19, 27, 0) 22%),
    linear-gradient(90deg, rgba(9, 19, 27, .62) 0%, rgba(9, 19, 27, .28) 45%, rgba(9, 19, 27, 0) 70%),
    linear-gradient(0deg, rgba(9, 19, 27, .55) 0%, rgba(9, 19, 27, 0) 45%);
}
.hero__content { position: absolute; left: 0; right: 0; bottom: clamp(48px, 7vh, 96px); margin-inline: auto; }
.hero h1 { margin-top: 24px; max-width: 13em; font-size: var(--h1); line-height: 1.03; letter-spacing: -.035em; }
.hero__links { display: flex; flex-wrap: wrap; gap: 12px 36px; margin-top: clamp(28px, 3vw, 44px); }

/* ---------- about ---------- */
.about { padding-block: var(--section); }
.about .grid { align-items: center; row-gap: 48px; }
.about__text { grid-column: 1 / 7; }
.about__text h2 { margin-top: 20px; font-size: var(--h2); line-height: 1.12; letter-spacing: -.025em; }
.about__text .lead { margin-top: clamp(24px, 2.4vw, 36px); max-width: 32em; }
.about__media { grid-column: 8 / 13; aspect-ratio: 5 / 4; overflow: hidden; background: var(--mist); }
.about__media img { width: 100%; height: 100%; object-fit: cover; }

.mandates { margin-top: clamp(80px, 8vw, 136px); }
.mandates__head { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: var(--col-gap); align-items: baseline; padding-bottom: 28px; }
.mandates__head .label { grid-column: 1 / 4; }
.mandates__line { grid-column: 4 / 13; font-size: var(--lead); color: var(--body); }
.mandates__list { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); column-gap: var(--col-gap); row-gap: 32px; }
.mandates__list li { border-top: 2px solid var(--ink); padding-top: 20px; }
.mandates__list h3 { font-size: var(--h3); line-height: 1.25; letter-spacing: -.01em; }
.mandates__list p { margin-top: 8px; color: var(--body); font-size: var(--small); line-height: 1.5; }

/* ---------- services ---------- */
.services { padding-block: var(--section); }
.services__grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(56px, 5vw, 88px) var(--col-gap); }
.service__media { aspect-ratio: 16 / 10; overflow: hidden; background: var(--navy); margin-bottom: 28px; }
.service__media img { width: 100%; height: 100%; object-fit: cover; transition: transform 1.2s cubic-bezier(.2, .7, .2, 1); }
.service:hover .service__media img { transform: scale(1.03); }
.service__for { font-size: var(--small); color: var(--muted); }
.service h3 { margin-top: 6px; font-size: clamp(21px, 1.6vw, 27px); line-height: 1.2; letter-spacing: -.015em; }
.service > p:not(.service__for):not(.service__scope) { margin-top: 14px; color: var(--body); max-width: 34em; }
.service__scope { margin-top: 14px; font-size: var(--small); color: var(--muted); padding-top: 14px; border-top: 1px solid var(--line); }
.service .link { margin-top: 18px; }

/* ---------- process ---------- */
.process { padding-block: var(--section); }
.steps { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); column-gap: var(--col-gap); row-gap: 48px; }
.steps li { border-top: 1px solid var(--line-dark); padding-top: 24px; }
.steps__n { display: block; font: 400 clamp(36px, 3vw, 52px)/1 var(--sans); letter-spacing: -.03em; color: var(--sky); }
.steps h3 { margin-top: clamp(28px, 3vw, 48px); font-size: var(--h3); }
.steps p { margin-top: 10px; color: var(--on-dark-soft); font-size: var(--small); line-height: 1.55; max-width: 24em; }

/* ---------- track record ---------- */
.record { padding-block: var(--section); }
.stats { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); column-gap: var(--col-gap); row-gap: 48px; }
.stats li { border-top: 2px solid var(--ink); padding-top: 24px; }
.stats__n { font: 400 clamp(52px, 5.2vw, 92px)/.95 var(--sans); letter-spacing: -.045em; }
.stats h3 { margin-top: clamp(24px, 2.4vw, 40px); font-size: var(--h3); }
.stats li > p:last-child { margin-top: 8px; color: var(--body); font-size: var(--small); line-height: 1.55; max-width: 26em; }

/* ---------- profile ---------- */
.about .profile { margin-top: clamp(80px, 8vw, 136px); padding-top: clamp(48px, 5vw, 80px); border-top: 1px solid var(--line); align-items: start; row-gap: 40px; }
.profile__photo { grid-column: 1 / 5; aspect-ratio: 4 / 5; overflow: hidden; background: var(--mist); }
.profile__photo img { width: 100%; height: 100%; object-fit: cover; object-position: 48% 20%; }
.profile__text { grid-column: 6 / 13; }
.profile__text h2 { margin-top: 20px; font-size: var(--h2); line-height: 1.08; letter-spacing: -.025em; }
.profile__role { margin-top: 10px; color: var(--muted); font-size: var(--small); }
.profile__bio { margin-top: clamp(24px, 2.4vw, 36px); max-width: 40em; }
.profile__bio .lead { color: var(--ink); }
.profile__bio p + p { margin-top: 1.1em; color: var(--body); }
.profile__text .link { margin-top: 24px; }

/* ---------- clients and testimonials ---------- */
.cases { padding-block: var(--section); }
/* slider: one client per slide, native scroll-snap so touch swipe works */
.case-studies { display: flex; overflow-x: auto; scroll-snap-type: x mandatory; scroll-behavior: smooth; overscroll-behavior-x: contain; border-top: 2px solid var(--ink); border-bottom: 1px solid var(--line); scrollbar-width: none; }
.case-studies::-webkit-scrollbar { display: none; }
.case-studies:focus-visible { outline: 2px solid var(--ink); outline-offset: 6px; }
.head > .slider-nav, .slider-nav { grid-column: 8 / 13; justify-self: end; display: flex; align-items: center; gap: 12px; }
.slider-nav__count { font-size: var(--small); color: var(--muted); margin-right: 12px; font-variant-numeric: tabular-nums; }
.slider-nav__count b { color: var(--ink); font-weight: 700; }
.slider-nav__btn { width: 52px; height: 52px; border: 1px solid var(--line-strong); font-size: 20px; line-height: 1; display: grid; place-items: center; transition: background-color .2s, color .2s, opacity .2s; }
.slider-nav__btn:hover:not(:disabled) { background: var(--ink); color: var(--white); }
.slider-nav__btn:disabled { opacity: .25; cursor: default; }
.case { flex: 0 0 100%; scroll-snap-align: start; display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: var(--col-gap); row-gap: 32px; padding-block: clamp(40px, 4vw, 64px); grid-template-rows: 1fr; }
/* each slide: photo with the client logo on a white badge, story beside it */
.case__media { grid-column: 1 / 7; position: relative; margin: 0; min-height: 520px; overflow: hidden; background: var(--navy); align-self: stretch; }
.case__media > img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.case__media::after { content: ""; position: absolute; inset: 0; background: linear-gradient(0deg, rgba(9, 19, 27, .6) 0%, rgba(9, 19, 27, 0) 42%); pointer-events: none; }
.case__badge { position: absolute; z-index: 1; left: clamp(20px, 2.4vw, 36px); bottom: clamp(20px, 2.4vw, 36px); }
/* logos sit straight on the photo, in white; the Inside Out tile keeps its own colours */
.case__badge .case__logo--pf img, .case__badge .case__logo--mc img { filter: brightness(0) invert(1); }
.case__badge .case__logo { margin-bottom: 0; }
.case__content { grid-column: 7 / 13; align-self: center; padding-block: 8px; }
.case__body { margin-top: clamp(28px, 2.6vw, 40px); }
.case__logo { display: block; height: 52px; margin-bottom: 28px; background: var(--ink); -webkit-mask: var(--logo) left center / contain no-repeat; mask: var(--logo) left center / contain no-repeat; transition: opacity .2s; }
.case__logo:hover { opacity: .7; }
.case__logo--io { width: 112px; height: 112px; background: none; -webkit-mask: none; mask: none; }
.case__logo--io img { width: 100%; height: 100%; }
.case__logo--img { width: fit-content; background: none; -webkit-mask: none; mask: none; }
.case__logo--img img { height: 100%; width: auto; }
.case__logo--pf { height: 34px; }
.case__logo--mc { height: 66px; }

.case__logo--box { height: 76px; }
.case h3 { font-size: clamp(21px, 1.6vw, 27px); line-height: 1.2; letter-spacing: -.015em; }
.case__type { margin-top: 6px; font-size: var(--small); color: var(--muted); }
.case__meta { margin-top: 20px; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); column-gap: 20px; }
.case__meta > div { padding-block: 12px; border-top: 1px solid var(--line); }
.case__meta dt { font: 700 13px/1.3 var(--sans); color: var(--muted); }
.case__meta dd { margin-top: 2px; font-size: var(--small); line-height: 1.45; }
.case__k { font: 700 var(--label)/1.2 var(--sans); }
.case__k ~ .case__k { margin-top: 28px; }
.case__body > p:not(.case__k):not(.case__result) { margin-top: 10px; color: var(--body); max-width: 40em; }
.case__result { margin-top: 10px; font-size: var(--lead); line-height: 1.45; max-width: 30em; }
.case__quote { margin: 32px 0 0; padding: 0 0 0 24px; border-left: 2px solid var(--sky); }
.case__quote p { font-size: clamp(18px, 1.3vw, 21px); line-height: 1.45; letter-spacing: -.01em; max-width: 34em; }
.case__quote footer { margin-top: 14px; font-size: var(--small); color: var(--muted); }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* ---------- contact ---------- */
.contact { padding-block: var(--section); }
.contact__grid { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: var(--col-gap); row-gap: 56px; align-items: start; }
.contact__intro { grid-column: 1 / 6; }
.contact h2 { margin-top: 20px; font-size: var(--h1); line-height: 1.03; letter-spacing: -.035em; max-width: 9em; }
.contact__details { margin-top: clamp(40px, 4vw, 64px); }
.contact__details > div { border-top: 1px solid var(--line-dark); padding-block: 16px; display: grid; grid-template-columns: 7em 1fr; gap: 16px; align-items: baseline; }
.contact__details > div:last-child { border-bottom: 1px solid var(--line-dark); }
.contact__details dt { font: 700 var(--small)/1.3 var(--sans); color: var(--on-dark-soft); }
.contact__details dd { font-size: var(--lead); line-height: 1.4; overflow-wrap: anywhere; }
.contact__details a { display: inline-block; padding-block: 6px; background: linear-gradient(currentColor, currentColor) 0 100% / 0 1px no-repeat; transition: background-size .35s ease; }
.contact__details a:hover { background-size: 100% 1px; }

.enquiry { grid-column: 7 / 13; display: flex; flex-direction: column; gap: 22px; }
.enquiry__title { font: 700 var(--lead)/1.2 var(--sans); }
.enquiry__row { display: grid; grid-template-columns: 1fr 1fr; gap: 22px var(--col-gap); }
.enquiry__trap { position: absolute; left: -9999px; }
.field { display: flex; flex-direction: column; gap: 6px; }
.field > span { font: 700 13px/1.3 var(--sans); color: var(--on-dark-soft); }
.field input, .field select, .field textarea {
  width: 100%; font: 400 var(--body-size)/1.4 var(--sans); color: var(--on-dark);
  background: transparent; border: 0; border-bottom: 1px solid var(--line-dark); border-radius: 0;
  padding: 10px 0; transition: border-color .2s; -webkit-appearance: none; appearance: none;
}
.field select { background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%23fff' stroke-opacity='.7' stroke-width='1.5'/%3E%3C/svg%3E") right 2px center no-repeat; padding-right: 24px; cursor: pointer; }
.field select option { color: var(--ink); }
.field textarea { resize: vertical; min-height: 104px; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-bottom-color: var(--sky); }
/* browser autofill keeps the navy field, not a pale blue box */
.field input:-webkit-autofill, .field input:-webkit-autofill:hover, .field input:-webkit-autofill:focus { -webkit-text-fill-color: var(--on-dark); -webkit-box-shadow: 0 0 0 1000px var(--navy) inset; caret-color: var(--on-dark); transition: background-color 9999s; }
.field.is-invalid input, .field.is-invalid textarea { border-bottom-color: #F2A38F; }
.enquiry__foot { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 28px; margin-top: 6px; }
.enquiry__send { display: inline-flex; align-items: center; gap: .6em; background: var(--white); color: var(--navy); font: 700 var(--small)/1 var(--sans); padding: 17px 26px; transition: background-color .2s; }
.enquiry__send:hover { background: var(--sky); }
.enquiry__send:disabled { opacity: .6; cursor: default; }
.enquiry__status { font-size: var(--small); color: var(--on-dark-soft); }
.enquiry__status.is-error { color: #F2A38F; }

/* ---------- footer ---------- */
.foot { background: var(--navy-deep); color: var(--on-dark); padding-block: clamp(56px, 5vw, 88px) max(28px, env(safe-area-inset-bottom)); }
.foot__grid { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: var(--col-gap); row-gap: 28px; align-items: center; }
.foot__logo { grid-column: 1 / 4; }
.foot__logo .wordmark { height: 56px; }
.foot__line { grid-column: 4 / 8; color: var(--on-dark-soft); font-size: var(--small); }
.foot__nav { grid-column: 8 / 13; display: flex; flex-wrap: wrap; gap: 4px 24px; justify-content: flex-end; }
.foot__nav a { color: var(--on-dark-soft); font-size: var(--small); padding-block: 10px; }
.foot__nav a:hover { color: var(--on-dark); }
.foot__legal { grid-column: 1 / -1; margin-top: clamp(32px, 3vw, 56px); padding-top: 20px; border-top: 1px solid var(--line-dark); font-size: 13px; color: var(--on-dark-soft); }

/* ---------- tablet ---------- */
@media (max-width: 1100px) {
  .nav__links, .nav__contact { display: none; }
  .nav__menu { display: block; }
  .head > div, .head > .lead { grid-column: 1 / -1; }
  .head > .lead { margin-top: 20px; }
  .about__text, .about__media { grid-column: 1 / -1; }
  .mandates__head .label, .mandates__line { grid-column: 1 / -1; }
  .mandates__line { margin-top: 12px; }
  .mandates__list, .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .profile__photo { grid-column: 1 / 7; }
  .profile__text { grid-column: 1 / -1; }
  .case { grid-template-rows: auto; align-content: start; }
  .case__media, .case__content { grid-column: 1 / -1; }
  .case__media { min-height: 0; aspect-ratio: 16 / 10; }
  .contact__intro, .enquiry { grid-column: 1 / -1; }
  .head > .slider-nav { grid-column: 1 / -1; justify-self: start; margin-top: 24px; }
  .foot__logo, .foot__line, .foot__nav { grid-column: 1 / -1; justify-content: flex-start; }
}

/* ---------- phone ---------- */
@media (max-width: 640px) {
  :root { --nav-h: 68px; }
  .wordmark { height: 36px; }
  .hero h1 { font-size: clamp(36px, 10vw, 46px); }
  .services__grid, .mandates__list, .steps, .stats { grid-template-columns: 1fr; }
  .contact__details > div { grid-template-columns: 1fr; gap: 4px; }
  .profile__photo { grid-column: 1 / -1; }
  .enquiry__row { grid-template-columns: 1fr; }
  .case__meta { grid-template-columns: 1fr; }
  .case__media { aspect-ratio: 4 / 3; }
}

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

/* section headings stand on their own, no eyebrow label above */
.head h2:first-child, .about__text h2:first-child, .profile__text h2:first-child, .contact h2:first-child { margin-top: 0; }
.mandates__line { grid-column: 1 / -1; font-weight: 700; color: var(--ink); }