/* Opus Smart Solutions — site stylesheet
   Navy #1B2A4A ve Gold #C9A84C marka renkleridir. Lora başlık, Poppins metin. */

:root {
  --navy: #1B2A4A;
  --navy-2: #24365C;
  --gold: #C9A84C;
  --ink: #1E2638;
  --slate: #586274;
  --mist: #EEF1F5;
  --rule: #D6DBE3;
  --white: #FFFFFF;
  --on-navy: #E4E8F0;
  --on-navy-soft: #A9B3C6;
  --serif: "Lora", Georgia, "Times New Roman", serif;
  --sans: "Poppins", "Segoe UI", Arial, sans-serif;
  --measure: 680px;
  --label-col: 220px;
  --gap: 48px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 88px; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  font-family: var(--sans);
  font-weight: 300;
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--ink);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; }
a { color: inherit; }
a:focus-visible, summary:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; }
strong { font-weight: 500; }

.wrap { max-width: 1200px; margin: 0 auto; padding: 0 32px; }

.skip {
  position: absolute; left: 16px; top: -60px; z-index: 100;
  background: var(--navy); color: var(--white); padding: 10px 16px; text-decoration: none;
}
.skip:focus { top: 12px; }

/* ---------- masthead ---------- */
.masthead {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, .97);
  border-bottom: 1px solid var(--rule);
}
.masthead-inner {
  max-width: 1200px; margin: 0 auto; padding: 0 32px;
  height: 72px; display: flex; align-items: center; gap: 32px;
}
.brand {
  display: flex; align-items: center; gap: 12px; text-decoration: none;
  font-family: var(--serif); font-weight: 600; font-size: 1.12rem; color: var(--navy);
  margin-right: auto;
}
.nav-wide { display: flex; gap: 28px; }
.nav-wide a, .lang {
  font-size: .9rem; font-weight: 400; color: var(--slate); text-decoration: none;
  padding: 6px 0; border-bottom: 1px solid transparent;
}
.nav-wide a:hover, .lang:hover { color: var(--navy); border-bottom-color: var(--gold); }
.lang { color: var(--navy); font-weight: 500; letter-spacing: .04em; }
.nav-small { display: none; position: relative; }
.nav-small summary {
  list-style: none; cursor: pointer; font-size: .9rem; color: var(--navy); font-weight: 400;
  border: 1px solid var(--rule); padding: 6px 14px; border-radius: 2px;
}
.nav-small summary::-webkit-details-marker { display: none; }
.nav-small nav {
  position: absolute; right: 0; top: calc(100% + 12px); min-width: 220px;
  background: var(--white); border: 1px solid var(--rule); padding: 8px 0;
  box-shadow: 0 12px 28px rgba(27, 42, 74, .12);
}
.nav-small nav a { display: block; padding: 10px 20px; text-decoration: none; color: var(--ink); font-size: .95rem; }
.nav-small nav a:hover { background: var(--mist); }

/* ---------- hero ---------- */
.hero { padding: 96px 0 88px; border-bottom: 1px solid var(--rule); }
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  grid-template-areas: "q q" "body facts";
  column-gap: 72px; row-gap: 56px;
}
.hero-q {
  grid-area: q;
  font-family: var(--serif); font-weight: 500; color: var(--navy);
  font-size: clamp(2.1rem, 4.6vw, 3.9rem); line-height: 1.12; letter-spacing: -.012em;
  max-width: 20ch;
  padding-left: 28px; border-left: 3px solid var(--gold);
}
.hero-body { grid-area: body; max-width: var(--measure); padding-left: 31px; }
.lead { font-size: 1.15rem; line-height: 1.75; color: var(--ink); }
.actions { margin-top: 36px; display: flex; flex-wrap: wrap; align-items: center; gap: 28px; }
.facts { grid-area: facts; align-self: start; border-top: 1px solid var(--navy); }
.facts div { display: grid; grid-template-columns: 11rem 1fr; gap: 16px; padding: 14px 0; border-bottom: 1px solid var(--rule); }
.facts dt { font-size: .88rem; color: var(--slate); }
.facts dd { font-size: .95rem; color: var(--ink); font-weight: 400; }

.button {
  display: inline-block; text-decoration: none;
  background: var(--navy); color: var(--white);
  font-family: var(--sans); font-size: .95rem; font-weight: 400;
  padding: 13px 26px; border-radius: 2px; border: 1px solid var(--navy);
  transition: background-color .2s ease;
}
.button:hover { background: var(--navy-2); }
.button-gold { background: var(--gold); border-color: var(--gold); color: var(--navy); font-weight: 500; }
.button-gold:hover { background: #D4B55E; }
.text-link {
  color: var(--navy); font-weight: 400; text-decoration: underline;
  text-decoration-color: var(--gold); text-decoration-thickness: 1px; text-underline-offset: 5px;
}
.text-link:hover { text-decoration-thickness: 2px; }

/* ---------- content blocks ---------- */
.block { padding: 104px 0; }
.tint { background: var(--mist); }
.split { display: grid; grid-template-columns: var(--label-col) minmax(0, 1fr); column-gap: var(--gap); }
.split > h2, .split > .list-title {
  font-family: var(--serif); font-weight: 500; color: var(--navy);
  font-size: 1.55rem; line-height: 1.3;
  align-self: start; position: sticky; top: 104px;
}
.col { max-width: var(--measure); }
.col-wide { max-width: none; }
.col-wide > .intro { max-width: var(--measure); }
.intro { font-size: 1.1rem; color: var(--ink); margin-bottom: 48px; }
h3 { font-family: var(--serif); font-weight: 500; color: var(--navy); font-size: 1.22rem; line-height: 1.35; }

/* approach */
.pillars { border-top: 1px solid var(--rule); margin-bottom: 64px; }
.pillars div { display: grid; grid-template-columns: 9rem 1fr; gap: 24px; padding: 22px 0; border-bottom: 1px solid var(--rule); }
.pillars dt { font-family: var(--serif); font-size: 1.3rem; color: var(--navy); line-height: 1.4; }
.pillars dd { color: var(--ink); }
.practices { list-style: none; margin-top: 20px; }
.practices li { position: relative; padding-left: 28px; margin-bottom: 16px; }
.practices li::before { content: ""; position: absolute; left: 0; top: .78em; width: 14px; height: 2px; background: var(--gold); }

/* services — the questions carry the page */
.services { list-style: none; border-top: 1px solid var(--rule); }
.service {
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); column-gap: 56px;
  padding: 40px 0; border-bottom: 1px solid var(--rule);
}
.service-body h3 { margin-bottom: 10px; }
.service-body p { color: var(--ink); }
.service-body .audience { margin-top: 14px; font-size: .9rem; color: #46505F; }
.service-q {
  font-family: var(--serif); font-style: italic; font-weight: 400;
  font-size: clamp(1.25rem, 1.9vw, 1.6rem); line-height: 1.38; color: var(--navy);
  padding-left: 24px; border-left: 2px solid var(--gold); align-self: start;
}

/* method — a real sequence, so it is numbered */
.steps { list-style: none; border-top: 1px solid var(--rule); }
.steps li {
  display: grid; grid-template-columns: 3rem minmax(0, 1fr) 15rem; column-gap: 32px;
  padding: 30px 0; border-bottom: 1px solid var(--rule);
}
.step-n { font-family: var(--serif); font-size: 1.6rem; line-height: 1.2; color: var(--gold); }
.steps h3 { margin-bottom: 6px; }
.step-out { font-size: .92rem; color: var(--ink); font-weight: 400; }
.step-out span { display: block; font-weight: 300; color: var(--slate); font-size: .84rem; }

/* clients */
.clients { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 40px 48px; }
.clients h3 { font-size: 1.05rem; padding-bottom: 10px; margin-bottom: 14px; border-bottom: 1px solid var(--navy); }
.clients ul { list-style: none; }
.clients li { font-size: .95rem; padding: 4px 0; }
.clients .more { font-size: .9rem; color: var(--slate); margin-top: 8px; }

/* insights */
.post-list { list-style: none; border-top: 1px solid var(--rule); margin-bottom: 32px; }
.post-list li { padding: 26px 0; border-bottom: 1px solid var(--rule); }
.post-list a { text-decoration: none; }
.post-title { font-family: var(--serif); font-size: 1.3rem; color: var(--navy); line-height: 1.35; }
.post-list a:hover .post-title { text-decoration: underline; text-decoration-color: var(--gold); text-underline-offset: 5px; }
.post-list p { margin-top: 6px; }
.post-list time { display: block; margin-top: 8px; font-size: .88rem; color: var(--slate); }

.article-back { align-self: start; font-size: .95rem; }
.article-title { font-family: var(--serif); font-weight: 500; color: var(--navy); font-size: clamp(1.9rem, 3.6vw, 2.8rem); line-height: 1.18; }
.article-lead { font-size: 1.2rem; margin-top: 20px; }
.article-meta { margin-top: 20px; padding-bottom: 28px; border-bottom: 1px solid var(--rule); font-size: .92rem; color: var(--slate); }
.prose { margin-top: 36px; font-family: var(--serif); font-size: 1.12rem; line-height: 1.8; }
.prose p, .prose ul, .prose ol, .prose blockquote { margin-bottom: 1.2em; }
.prose h2 { font-family: var(--serif); font-weight: 500; color: var(--navy); font-size: 1.45rem; margin: 1.8em 0 .6em; }
.prose ul, .prose ol { padding-left: 1.4em; }
.prose blockquote { border-left: 2px solid var(--gold); padding-left: 20px; font-style: italic; color: var(--navy); }
.article-contact { margin-top: 48px; }

/* contact */
.contact { background: var(--navy); color: var(--on-navy); }
.contact .split > h2 { color: var(--white); }
.contact .intro { color: var(--on-navy); }
.contact-list { border-top: 1px solid rgba(228, 232, 240, .22); margin-bottom: 40px; }
.contact-list div { display: grid; grid-template-columns: 8rem 1fr; gap: 20px; padding: 14px 0; border-bottom: 1px solid rgba(228, 232, 240, .22); }
.contact-list dt { color: var(--on-navy-soft); font-size: .9rem; }
.contact-list dd { color: var(--white); font-weight: 400; }
.contact-list a { text-decoration: none; }
.contact-list a:hover { text-decoration: underline; text-decoration-color: var(--gold); text-underline-offset: 4px; }

/* footer */
.footer { background: var(--navy); border-top: 1px solid rgba(228, 232, 240, .14); padding: 28px 0; }
.footer p { font-size: .85rem; color: var(--on-navy-soft); }

/* ---------- responsive ---------- */
@media (max-width: 1080px) {
  .nav-wide { display: none; }
  .nav-small { display: block; }
  .clients { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .steps li { grid-template-columns: 3rem minmax(0, 1fr); }
  .step-out { grid-column: 2; margin-top: 12px; }
}
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; grid-template-areas: "q" "body" "facts"; row-gap: 44px; }
  .split { grid-template-columns: 1fr; }
  .split > h2, .split > .list-title { position: static; margin-bottom: 28px; font-size: 1.75rem; }
  .article-back { margin-bottom: 24px; }
  .service { grid-template-columns: 1fr; row-gap: 22px; }
}
@media (max-width: 600px) {
  .wrap, .masthead-inner { padding: 0 20px; }
  .masthead-inner { gap: 16px; height: 64px; }
  .brand span { font-size: 1rem; }
  .brand img { width: 30px; height: 30px; }
  .hero { padding: 56px 0 56px; }
  .hero-q { padding-left: 18px; }
  .hero-body { padding-left: 0; }
  .facts div, .pillars div, .contact-list div { grid-template-columns: 1fr; gap: 2px; }
  .block { padding: 72px 0; }
  .clients { grid-template-columns: 1fr; gap: 32px; }
  .steps li { grid-template-columns: 2.2rem minmax(0, 1fr); column-gap: 16px; }
}
@media (max-width: 380px) {
  .brand span { display: none; }
}

@media print {
  .masthead, .nav-small, .button { display: none; }
  .contact { background: none; color: var(--ink); }
  .contact .split > h2, .contact-list dd { color: var(--navy); }
}