/* OSF Solutions | Tarik Najeddine
   One stylesheet for every page. Colors and type live in :root. */

:root {
  --paper: #FAFBFC;
  --surface: #FFFFFF;
  --mist: #EDF1F5;
  --rule: #D6DCE3;
  --ink: #16202C;
  --slate: #536070;
  --link: #2349C4;
  --link-dark: #1A3796;
  --path: #2F6B52;
  --error: #B42318;

  --serif: "Newsreader", Georgia, "Times New Roman", serif;
  --sans: "Public Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  --wrap: 1120px;
  --gutter: clamp(16px, 4vw, 40px);
  --radius: 14px;
}

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

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; height: auto; display: block; }

a {
  color: var(--link);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}
a:hover { color: var(--link-dark); text-decoration-thickness: 2px; }

:focus-visible {
  outline: 3px solid var(--link);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip {
  position: absolute;
  left: -9999px;
  top: 12px;
  background: var(--surface);
  padding: 10px 14px;
  z-index: 10;
}
.skip:focus { left: 16px; }

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.wrap {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* Type */

h1, h2, h3, h4 { margin: 0; font-weight: 500; }

h1, h2 {
  font-family: var(--serif);
  letter-spacing: -0.015em;
  line-height: 1.08;
}
h1 { font-size: clamp(2.5rem, 5.5vw, 4.25rem); }
h2 { font-size: clamp(1.75rem, 3vw, 2.375rem); }

h3 {
  font-family: var(--sans);
  font-weight: 600;
  font-size: 1.125rem;
  line-height: 1.35;
}

p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }

.lede {
  font-family: var(--serif);
  font-size: clamp(1.25rem, 2.2vw, 1.5rem);
  line-height: 1.45;
}

.muted { color: var(--slate); }

/* Buttons */

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 22px;
  border: 1.5px solid var(--link);
  border-radius: 999px;
  font-family: var(--sans);
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
}
.button-primary { background: var(--link); color: #fff; }
.button-primary:hover { background: var(--link-dark); border-color: var(--link-dark); color: #fff; text-decoration: none; }
.button-secondary { background: transparent; color: var(--link); }
.button-secondary:hover { background: var(--mist); color: var(--link-dark); text-decoration: none; }
.button[disabled] { opacity: 0.6; cursor: progress; }

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

/* Header */

.site-header { border-bottom: 1px solid var(--rule); }
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px 24px;
  min-height: 76px;
  padding-top: 12px;
  padding-bottom: 12px;
}

.brand {
  display: flex;
  flex-direction: column;
  color: var(--ink);
  text-decoration: none;
  line-height: 1.15;
}
.brand:hover { color: var(--ink); }
.brand-name { font-family: var(--serif); font-size: 1.375rem; font-weight: 500; }
.brand-sub { font-size: 0.8125rem; color: var(--slate); }

.nav {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px 24px;
}
.nav a {
  color: var(--ink);
  font-size: 0.9375rem;
  text-decoration: none;
}
.nav a:hover,
.nav a[aria-current="page"] {
  color: var(--link);
  text-decoration: underline;
}
.nav a.button-primary,
.nav a.button-primary:hover {
  color: #fff;
  text-decoration: none;
  min-height: 40px;
  padding: 0 18px;
}

@media (max-width: 640px) {
  .site-header .wrap { min-height: 0; }
  .nav { width: 100%; gap: 6px 18px; }
  .nav a.button-primary { margin-left: auto; }
}

/* Hero */

.hero { padding: clamp(48px, 8vw, 96px) 0 clamp(40px, 6vw, 80px); }
.hero .wrap {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  gap: clamp(36px, 5vw, 72px);
  align-items: center;
}
.hero-role {
  font-family: var(--serif);
  font-size: clamp(1.375rem, 2.4vw, 1.75rem);
  line-height: 1.25;
  color: var(--slate);
  margin: 0.4em 0 1em;
}
.hero-text p { max-width: 52ch; }

@media (max-width: 880px) {
  .hero .wrap { grid-template-columns: 1fr; }
}

/* The search specimen: one result plus one AI answer citing it */

.specimen { margin: 0; }

.serp {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  padding: 20px 22px 22px;
  box-shadow: 0 24px 48px -32px rgba(22, 32, 44, 0.45);
}

.query {
  display: flex;
  align-items: center;
  gap: 10px;
  border: 1px solid var(--rule);
  border-radius: 999px;
  padding: 10px 16px;
  font-size: 0.9375rem;
}
.query svg { flex: none; color: var(--slate); }
.caret {
  display: inline-block;
  width: 1.5px;
  height: 1.05em;
  margin-left: 2px;
  background: var(--ink);
  vertical-align: text-bottom;
}

.result {
  padding: 18px 2px 18px;
  border-bottom: 1px solid var(--mist);
}
.result-site {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.8125rem;
  line-height: 1.3;
}
.favicon {
  flex: none;
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--mist);
  color: var(--link);
  font-family: var(--serif);
  font-size: 0.9375rem;
}
.result-path { display: block; color: var(--path); }
.result-title {
  display: block;
  margin: 10px 0 4px;
  font-size: 1.1875rem;
  line-height: 1.3;
  color: var(--link);
}
.result-snippet { margin: 0; font-size: 0.875rem; color: var(--slate); }

.answer { padding: 16px 2px 0; }
.answer-label {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--path);
}
.answer p { margin: 0 0 12px; font-size: 0.9375rem; }
.cite {
  display: inline-grid;
  place-items: center;
  min-width: 20px;
  height: 20px;
  padding: 0 6px;
  margin-left: 3px;
  border-radius: 999px;
  background: var(--mist);
  color: var(--link);
  font-size: 0.75rem;
  font-weight: 600;
  vertical-align: 2px;
}
.sources {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 0.8125rem;
  color: var(--slate);
}
.source-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px 3px 4px;
  border: 1px solid var(--rule);
  border-radius: 999px;
  color: var(--ink);
}
.source-chip .cite { margin-left: 0; vertical-align: 0; }

.specimen figcaption {
  margin-top: 16px;
  max-width: 46ch;
  font-size: 0.9375rem;
  color: var(--slate);
}

/* One load sequence: the query types, the result lands, the answer cites it. */
@media (prefers-reduced-motion: no-preference) {
  .caret { animation: blink 0.9s steps(1) 0s 4 both; }
  .result { animation: rise 0.5s ease-out 0.45s both; }
  .answer { animation: rise 0.5s ease-out 1.05s both; }
  .answer .cite { animation: ping 0.8s ease-out 1.7s both; }
}
@keyframes blink { 50% { opacity: 0; } }
@keyframes rise { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
@keyframes ping {
  from { box-shadow: 0 0 0 0 rgba(35, 73, 196, 0.45); }
  to { box-shadow: 0 0 0 9px rgba(35, 73, 196, 0); }
}

/* Client strip */

.clients {
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  padding: 22px 0;
}
.clients .wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 32px;
}
.clients h2 {
  font-family: var(--sans);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0;
  color: var(--slate);
}
.clients ul {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 28px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.clients li { font-family: var(--serif); font-size: 1.1875rem; }

/* Sections */

.section { padding: clamp(56px, 8vw, 104px) 0; }
.section + .section { padding-top: 0; }
.section-head { max-width: 62ch; margin-bottom: 36px; }
.section-head p { margin-top: 12px; color: var(--slate); }

/* Results ledger: client, result, method */

.ledger-head,
.ledger li {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.25fr) minmax(0, 1.4fr);
  gap: 10px 36px;
}
.ledger-head {
  padding-bottom: 10px;
  border-bottom: 1px solid var(--ink);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--slate);
}
.ledger {
  margin: 0;
  padding: 0;
  list-style: none;
}
.ledger li {
  padding: 24px 0;
  border-bottom: 1px solid var(--rule);
}
.ledger-who { font-weight: 600; }
.ledger-who span {
  display: block;
  margin-top: 2px;
  font-size: 0.875rem;
  font-weight: 400;
  color: var(--slate);
}
.ledger-result {
  font-family: var(--serif);
  font-size: 1.375rem;
  line-height: 1.3;
}
.ledger-method { font-size: 0.9375rem; color: var(--slate); }

@media (max-width: 820px) {
  .ledger-head { display: none; }
  .ledger { border-top: 1px solid var(--ink); }
  .ledger li { grid-template-columns: 1fr; gap: 6px; }
}

/* Services overview */

.service-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 56px;
}
.service-grid article {
  padding: 28px 0 32px;
  border-top: 1px solid var(--rule);
}
.service-grid h3 {
  margin-bottom: 10px;
  font-family: var(--serif);
  font-size: 1.5rem;
  font-weight: 500;
}
.service-grid p { color: var(--slate); }
.service-grid a { font-weight: 600; }

@media (max-width: 720px) {
  .service-grid { grid-template-columns: 1fr; }
}

/* Photo and text split */

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: clamp(28px, 5vw, 64px);
  align-items: start;
}
.portrait {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  object-position: 50% 25%;
  border-radius: var(--radius);
  background: var(--mist);
}
.split h2 { margin-bottom: 18px; }
.split .text { max-width: 60ch; }

@media (min-width: 801px) {
  .split-sticky .portrait { position: sticky; top: 24px; }
}

@media (max-width: 800px) {
  .split { grid-template-columns: 1fr; }
  .portrait { max-width: 340px; }
}

/* Closing call to action */

.cta {
  background: var(--ink);
  color: #fff;
  padding: clamp(56px, 8vw, 96px) 0;
}
.cta h2 { color: #fff; }
.cta p { max-width: 56ch; margin-top: 14px; color: #C9D2DD; }
.cta .button-primary { background: #fff; border-color: #fff; color: var(--ink); }
.cta .button-primary:hover { background: var(--mist); border-color: var(--mist); color: var(--ink); }
.cta .button-secondary { border-color: #8A97A8; color: #fff; }
.cta .button-secondary:hover { background: rgba(255, 255, 255, 0.08); color: #fff; }
.cta :focus-visible { outline-color: #fff; }

/* Footer */

.site-footer { padding: 32px 0 40px; font-size: 0.875rem; color: var(--slate); }
.site-footer .wrap {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px 24px;
}
.site-footer p { margin: 0; }
.site-footer ul {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.site-footer a { color: var(--slate); }
.site-footer a:hover { color: var(--link); }

/* Inner page header */

.page-head {
  padding: clamp(48px, 7vw, 88px) 0 clamp(32px, 4vw, 52px);
  border-bottom: 1px solid var(--rule);
}
.page-head .lede { max-width: 60ch; margin-top: 18px; color: var(--slate); }

/* Long-form text */

.prose { max-width: 68ch; }
.prose h2 { margin: 64px 0 18px; }
.prose h2:first-child { margin-top: 0; }
.prose h3 { margin: 28px 0 8px; }
.prose ul { margin: 0 0 1.2em; padding-left: 1.2em; }
.prose li { margin-bottom: 0.5em; }
.prose li strong { font-weight: 600; }

.def-list { margin: 0; }
.def-list div { padding: 14px 0; border-top: 1px solid var(--rule); }
.def-list dt { font-weight: 600; }
.def-list dd { margin: 4px 0 0; color: var(--slate); }

/* Services detail */

.toc {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
}
.toc a {
  display: inline-block;
  padding: 8px 16px;
  border: 1px solid var(--rule);
  border-radius: 999px;
  color: var(--ink);
  font-size: 0.9375rem;
  text-decoration: none;
}
.toc a:hover { border-color: var(--link); color: var(--link); }

.service {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.6fr);
  gap: 24px 64px;
  padding: 64px 0;
  border-bottom: 1px solid var(--rule);
  scroll-margin-top: 16px;
}
.service-intro h2 { margin-bottom: 16px; }
.service-intro p { color: var(--slate); }
.service-body h3 { margin-bottom: 10px; }
.service-body ul { margin: 0; padding-left: 1.2em; }
.service-body li { margin-bottom: 0.5em; }

.example {
  margin-top: 28px;
  padding: 20px 24px;
  border-radius: 12px;
  background: var(--mist);
}
.example h3 { margin-bottom: 10px; font-size: 1rem; }
.example p { font-size: 0.9375rem; }
.pmr {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 8px 18px;
  margin: 0;
  font-size: 0.9375rem;
}
.pmr dt { font-weight: 600; }
.pmr dd { margin: 0; }
.pmr + p { margin-top: 14px; }

@media (max-width: 820px) {
  .service { grid-template-columns: 1fr; padding: 48px 0; }
}
@media (max-width: 420px) {
  .pmr { grid-template-columns: 1fr; gap: 2px; }
  .pmr dd { margin-bottom: 8px; }
}

.two-col {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px 56px;
}
.two-col > div { padding-top: 22px; border-top: 1px solid var(--ink); }
.two-col h3 { margin-bottom: 8px; font-family: var(--serif); font-size: 1.5rem; font-weight: 500; }
.two-col p { color: var(--slate); }

@media (max-width: 720px) {
  .two-col { grid-template-columns: 1fr; }
}

/* Portfolio */

.group { padding: 64px 0 8px; }
.group:last-child { padding-bottom: clamp(56px, 8vw, 96px); }
.group > h2 { margin-bottom: 10px; }
.group > p { max-width: 62ch; color: var(--slate); }
.entries { margin-top: 28px; }

.entry {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 2fr);
  gap: 8px 48px;
  padding: 28px 0;
  border-top: 1px solid var(--rule);
}
.entry h3 { font-family: var(--serif); font-size: 1.375rem; font-weight: 500; }
.entry .role { margin-top: 4px; font-size: 0.9375rem; color: var(--slate); }
.entry ul { margin: 0; padding-left: 1.15em; }
.entry li { margin-bottom: 0.5em; }
.entry li:last-child { margin-bottom: 0; }
.entry a { font-weight: 600; }

@media (max-width: 760px) {
  .entry { grid-template-columns: 1fr; }
}

/* Contact */

.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr);
  gap: 48px 72px;
  align-items: start;
}
.option { padding: 24px 0; border-top: 1px solid var(--rule); }
.option:first-child { padding-top: 0; border-top: 0; }
.option h2 {
  margin-bottom: 8px;
  font-family: var(--sans);
  font-size: 1.125rem;
  font-weight: 600;
  letter-spacing: 0;
  line-height: 1.35;
}
.option p { color: var(--slate); }
.option ul { margin: 0; padding-left: 1.15em; color: var(--slate); }
.option li { margin-bottom: 0.4em; }

.form-card {
  padding: clamp(22px, 4vw, 36px);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: var(--surface);
}
.form-card h2 { margin-bottom: 22px; }

.field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 18px; }
label { font-size: 0.9375rem; font-weight: 600; }
.optional { font-weight: 400; color: var(--slate); }
input, textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid #B6BFCA;
  border-radius: 10px;
  background: var(--surface);
  color: var(--ink);
  font: inherit;
}
textarea { min-height: 160px; resize: vertical; }
input:focus-visible, textarea:focus-visible {
  outline: 3px solid var(--link);
  outline-offset: 1px;
  border-color: var(--link);
}
.hp { position: absolute; left: -9999px; }
.form-status { min-height: 1.6em; margin: 14px 0 0; font-weight: 600; }
.form-status.ok { color: var(--path); }
.form-status.err { color: var(--error); }

@media (max-width: 860px) {
  .contact-grid { grid-template-columns: 1fr; }
}