/* ============================================================
   CIS — Investigation Services
   Editorial, restrained design system
   ============================================================ */

:root {
  --bg:          #122017;   /* page background — deep forest green */
  --bg-alt:      #0e1a12;   /* header / footer / inset bands */
  --field:       #1b2d20;   /* form fields */

  --gold:        #c9a44c;   /* accent — used sparingly */
  --gold-soft:   #d8bb6e;
  --ink:         #11200f;   /* dark text on gold */

  --text:        #f1f3ea;   /* primary light text */
  --text-dim:    #aeb8a6;   /* secondary text */
  --text-faint:  #6f7c69;   /* labels, fine print */

  --hair:        rgba(255, 255, 255, 0.10);  /* hairline rules */
  --hair-gold:   rgba(201, 164, 76, 0.28);

  --maxw:        1240px;     /* readable editorial width */
  --maxw-wide:   1480px;

  --font-serif: "Playfair Display", Georgia, "Times New Roman", serif;
  --font-sans:  "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
}

* { box-sizing: border-box; }

.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  position: relative;
}

/* Atmosphere: faint intel grid + vignette behind everything */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse 80% 60% at 50% 22%, rgba(201,164,76,0.045), transparent 60%),
    repeating-linear-gradient(0deg,  rgba(255,255,255,0.020) 0 1px, transparent 1px 72px),
    repeating-linear-gradient(90deg, rgba(255,255,255,0.020) 0 1px, transparent 1px 72px),
    radial-gradient(ellipse at center, transparent 52%, rgba(0,0,0,0.5) 100%);
}

.site-header, main, .site-footer { position: relative; z-index: 1; }

h1, h2, h3 { margin: 0; font-weight: 700; }
p { margin: 0; }
a { color: inherit; text-decoration: none; }

.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 clamp(24px, 5vw, 48px);
}
.container.wide { max-width: var(--maxw-wide); }

/* ---------------- Header / nav ---------------- */
.site-header {
  border-bottom: 1px solid var(--hair);
}
.site-header .inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
  width: 100%;
  max-width: var(--maxw-wide);
  margin: 0 auto;
  padding: 0 clamp(24px, 5vw, 48px);
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand .brand-mark { height: 40px; width: auto; display: block; }
.brand .wordmark {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  letter-spacing: .04em;
}
.brand .wordmark b { color: var(--text); font-weight: 700; }
.brand .wordmark span {
  font-family: var(--font-sans);
  color: var(--text-dim);
  font-weight: 400;
  font-size: .82rem;
  letter-spacing: .14em;
  text-transform: uppercase;
}

.main-nav { display: flex; gap: 4px; }
.main-nav a {
  color: var(--text-dim);
  padding: 8px 16px;
  font-size: .92rem;
  letter-spacing: .02em;
  transition: color .15s ease;
}
.main-nav a:hover { color: var(--text); }
.main-nav a.active { color: var(--gold); }

.nav-toggle { display: none; }

/* ---------------- Main / shared headings ---------------- */
main {
  flex: 1 0 auto;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(56px, 9vh, 120px) 0;
}

.eyebrow {
  color: var(--gold);
  font-size: .76rem;
  font-weight: 600;
  letter-spacing: .26em;
  text-transform: uppercase;
  margin: 0 0 22px;
}

.page-head { max-width: 820px; margin-bottom: clamp(48px, 7vh, 88px); }
.section-title {
  font-family: var(--font-serif);
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  line-height: 1.05;
  letter-spacing: -0.01em;
  margin-bottom: 20px;
}
.section-intro {
  color: var(--text-dim);
  font-size: 1.15rem;
  max-width: 60ch;
}
.gold { color: var(--gold); }

/* ---------------- Buttons / links ---------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 30px;
  font-weight: 600;
  font-size: .98rem;
  letter-spacing: .01em;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background .15s ease, color .15s ease, border-color .15s ease;
}
.btn-primary { background: var(--gold); color: var(--ink); }
.btn-primary:hover { background: var(--gold-soft); }
.btn-ghost { color: var(--text); border-color: var(--hair-gold); }
.btn-ghost:hover { border-color: var(--gold); color: var(--gold); }
.btn-block { width: 100%; justify-content: center; }

.text-link {
  color: var(--gold);
  border-bottom: 1px solid var(--hair-gold);
  padding-bottom: 2px;
  transition: border-color .15s ease;
}
.text-link:hover { border-color: var(--gold); }

/* ---------------- Home: hero ---------------- */
.hero {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: clamp(48px, 6vw, 110px);
  align-items: center;
  position: relative;
}
.hero > * { position: relative; z-index: 1; }
.hero-mark {
  position: absolute;
  right: clamp(-60px, -2vw, 0px);
  top: 50%;
  transform: translateY(-50%);
  height: min(620px, 90%);
  width: auto;
  opacity: 0.06;
  z-index: 0;
  pointer-events: none;
  user-select: none;
}
.hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(2.8rem, 5.6vw, 5rem);
  line-height: 1.02;
  letter-spacing: -0.015em;
  margin-bottom: 28px;
}
.hero .lead {
  color: var(--text-dim);
  font-size: 1.3rem;
  max-width: 46ch;
}
.hero-cta { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 44px; }

/* Credentials — plain list, hairline separated, no icons */
.creds { border-top: 1px solid var(--hair); }
.creds li {
  list-style: none;
  display: grid;
  grid-template-columns: 1.6rem 1fr;
  gap: 14px;
  padding: 22px 0;
  border-bottom: 1px solid var(--hair);
}
.creds { margin: 0; padding-left: 0; }
.creds .n {
  color: var(--gold);
  font-size: 1.02rem;
  line-height: 1.55;
}
.creds p { color: var(--text); font-size: 1.02rem; }

/* ---------------- Editorial listing (Services) ---------------- */
.listing { border-top: 1px solid var(--hair); }
.listing-item {
  display: grid;
  grid-template-columns: 4rem minmax(200px, 1fr) 2fr;
  gap: clamp(20px, 4vw, 56px);
  padding: clamp(28px, 4vh, 44px) 0;
  border-bottom: 1px solid var(--hair);
  align-items: baseline;
}
.listing-item .num {
  font-family: var(--font-serif);
  color: var(--gold);
  font-size: 1.4rem;
}
.listing-item h3 {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  font-weight: 700;
}
.listing-item p { color: var(--text-dim); max-width: 56ch; }

/* ---------------- Columns (Sectors / About) ---------------- */
.cols {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-top: 1px solid var(--hair);
}
.cols .col {
  padding: 38px clamp(24px, 2.5vw, 44px);
  border-right: 1px solid var(--hair);
}
.cols .col:first-child { padding-left: 0; }
.cols .col:last-child { border-right: 0; padding-right: 0; }
.cols .col .kicker { color: var(--gold); font-family: var(--font-serif); font-size: 1.1rem; margin-bottom: 14px; }
.cols .col h3 { font-family: var(--font-serif); font-size: 1.45rem; margin-bottom: 12px; }
.cols .col p { color: var(--text-dim); font-size: .98rem; }

/* About: who-we-are lead + experience stat */
.about-lead {
  display: grid;
  grid-template-columns: 1.7fr 1fr;
  gap: clamp(40px, 6vw, 90px);
  align-items: center;
  border-top: 1px solid var(--hair);
  padding-top: clamp(36px, 5vh, 60px);
  margin-bottom: clamp(52px, 8vh, 96px);
}
.about-lead p { color: var(--text-dim); font-size: 1.14rem; margin-bottom: 18px; max-width: 62ch; }
.about-lead p:last-child { margin-bottom: 0; }
.about-lead .stat { border-left: 2px solid var(--hair-gold); padding-left: 30px; }
.about-lead .stat .big {
  font-family: var(--font-serif);
  color: var(--gold);
  font-size: clamp(3rem, 6vw, 4.6rem);
  line-height: 1;
}
.about-lead .stat .lbl { color: var(--text-dim); margin-top: 12px; max-width: 24ch; }

.subhead {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 2.6vw, 2.1rem);
  margin-bottom: clamp(20px, 3vh, 32px);
}

/* About: two-column standards list */
.standards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 clamp(40px, 6vw, 96px);
  border-top: 1px solid var(--hair);
}
.standards .item {
  padding: clamp(28px, 4vh, 44px) 0;
  border-bottom: 1px solid var(--hair);
}
.standards .item h3 {
  font-family: var(--font-serif);
  font-size: 1.55rem;
  margin-bottom: 12px;
}
.standards .item p { color: var(--text-dim); max-width: 48ch; }

/* ---------------- Coverage band ---------------- */
.coverage {
  margin-top: clamp(48px, 8vh, 96px);
  padding-top: clamp(40px, 6vh, 64px);
  border-top: 1px solid var(--hair-gold);
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: clamp(32px, 5vw, 80px);
  align-items: center;
}
.coverage h3 { font-family: var(--font-serif); font-size: clamp(1.8rem, 3vw, 2.4rem); margin-bottom: 16px; }
.coverage p { color: var(--text-dim); max-width: 60ch; }
.coverage .badge { text-align: right; }
.coverage .badge .big { font-family: var(--font-serif); color: var(--gold); font-size: clamp(2.6rem, 5vw, 3.6rem); line-height: 1; }
.coverage .badge .sub { color: var(--text-faint); letter-spacing: .14em; text-transform: uppercase; font-size: .78rem; margin-top: 8px; }

/* ---------------- Contact ---------------- */
.contact { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(48px, 7vw, 110px); align-items: start; }
.contact-list { margin-top: 8px; border-top: 1px solid var(--hair); }
.contact-row {
  display: grid;
  grid-template-columns: 7rem 1fr;
  gap: 24px;
  align-items: baseline;
  padding: 22px 0;
  border-bottom: 1px solid var(--hair);
}
.contact-row .label { color: var(--gold); font-size: .76rem; letter-spacing: .2em; text-transform: uppercase; }
.contact-row .value { font-size: 1.2rem; }
.contact-row a.value:hover { color: var(--gold); }
.legal { margin-top: 36px; color: var(--text-faint); font-size: .92rem; }
.legal b { color: var(--text-dim); font-weight: 600; }

.enquiry { border-left: 1px solid var(--hair); padding-left: clamp(24px, 4vw, 56px); }
.enquiry h2 { font-family: var(--font-serif); font-size: 1.8rem; margin-bottom: 28px; }
.enquiry .field { margin-bottom: 16px; }
.enquiry label.lbl { display: block; color: var(--text-faint); font-size: .78rem; letter-spacing: .14em; text-transform: uppercase; margin-bottom: 8px; }
.enquiry input,
.enquiry textarea {
  width: 100%;
  background: var(--field);
  border: 1px solid var(--hair);
  border-radius: 4px;
  padding: 14px 16px;
  color: var(--text);
  font-family: inherit;
  font-size: 1rem;
}
.enquiry textarea { min-height: 120px; resize: vertical; }
.enquiry input::placeholder, .enquiry textarea::placeholder { color: var(--text-faint); }
.enquiry input:focus, .enquiry textarea:focus { outline: none; border-color: var(--gold); }
.enquiry .btn { margin-top: 8px; }
.form-status { margin: 16px 0 0; min-height: 1.2em; font-size: .95rem; }
.form-status.is-ok { color: var(--gold-soft); }
.form-status.is-err { color: #e6a3a3; }

/* ---------------- Footer ---------------- */
.site-footer {
  background: var(--bg-alt);
  border-top: 1px solid var(--hair);
  color: var(--text-dim);
}
.footer-grid {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 40px;
  padding-top: 52px;
  padding-bottom: 40px;
  flex-wrap: wrap;
  max-width: var(--maxw-wide);
}
.footer-brand .footer-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-serif);
  font-size: 1.3rem;
  letter-spacing: .04em;
}
.footer-brand .footer-mark { height: 36px; width: auto; display: block; }
.footer-brand .footer-logo b { color: var(--text); font-weight: 700; }
.footer-brand .footer-logo .muted { font-family: var(--font-sans); color: var(--text-dim); font-weight: 400; font-size: .8rem; letter-spacing: .14em; text-transform: uppercase; }
.footer-tagline { margin-top: 16px; max-width: 360px; font-size: .96rem; line-height: 1.6; }

.footer-contact { display: flex; flex-direction: column; gap: 10px; text-align: right; }
.footer-contact .fc-title { color: var(--gold); font-size: .74rem; letter-spacing: .22em; text-transform: uppercase; font-weight: 600; margin-bottom: 4px; }
.footer-contact a, .footer-contact span { color: var(--text-dim); transition: color .15s ease; }
.footer-contact a:hover { color: var(--gold); }

.footer-bar { border-top: 1px solid var(--hair); }
.footer-bar .container { max-width: var(--maxw-wide); padding-top: 18px; padding-bottom: 18px; font-size: .82rem; color: var(--text-faint); }

/* ---------------- Responsive ---------------- */
@media (max-width: 980px) {
  .hero { grid-template-columns: 1fr; gap: 48px; }
  .contact { grid-template-columns: 1fr; }
  .enquiry { border-left: 0; padding-left: 0; border-top: 1px solid var(--hair); padding-top: 40px; }
  .cols { grid-template-columns: 1fr 1fr; column-gap: clamp(32px, 5vw, 64px); }
  .cols .col { border-right: 0; border-bottom: 1px solid var(--hair); padding: 32px 0; }
  .about-lead { grid-template-columns: 1fr; gap: 36px; }
  .about-lead .stat { border-left: 0; border-top: 2px solid var(--hair-gold); padding-left: 0; padding-top: 28px; }
  .coverage { grid-template-columns: 1fr; }
  .coverage .badge { text-align: left; }
}

@media (max-width: 640px) {
  body { font-size: 16px; }
  .listing-item { grid-template-columns: 1fr; gap: 8px; }
  .listing-item .num { font-size: 1.1rem; }
  .standards { grid-template-columns: 1fr; }
  .cols { grid-template-columns: 1fr; }
  .contact-row { grid-template-columns: 1fr; gap: 4px; }
  .main-nav {
    position: absolute; top: 76px; left: 0; right: 0; z-index: 10;
    flex-direction: column; gap: 0;
    background: var(--bg-alt);
    border-bottom: 1px solid var(--hair);
    display: none; padding: 8px 24px 16px;
  }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 12px 0; }
  .nav-toggle {
    display: inline-flex; background: none; border: 0; cursor: pointer;
    color: var(--text); font-size: 1.6rem; line-height: 1;
  }
  .footer-grid { flex-direction: column; gap: 28px; }
  .footer-contact { text-align: left; }
}