/* ============================================================
   Mayfair21 — styles.css
   Single-page brand site. Bone backdrop, Navy carrier, Coral
   accent. Mobile-first; breakpoints at 600, 900, 1280.
   ============================================================ */

:root {
  --navy: #143A5E;
  --navy-deep: #0E2940;
  --coral: #E94B4B;
  --coral-deep: #C73838;
  --bone: #F8F5F0;
  --stone: #E8E2D6;
  --slate: #4A5568;
  --charcoal: #0F1419;
  --brass: #B8956A;
  --white: #FFFFFF;

  --sans: 'Inter', -apple-system, 'Helvetica Neue', Arial, sans-serif;
  --mono: 'JetBrains Mono', monospace;

  --gutter: 24px;
  --container: 1140px;
  --container-lg: 1280px;
}

/* ---------- Reset / base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html {
  scroll-behavior: smooth;
  /* Buffer for the fixed header on anchor jumps. */
  scroll-padding-top: 110px;
}
@media (min-width: 900px) {
  html { scroll-padding-top: 140px; }
}
body {
  margin: 0;
  font-family: var(--sans);
  font-weight: 400;
  font-size: 17px;
  line-height: 1.6;
  color: var(--charcoal);
  background: var(--bone);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img, svg { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; }
h1, h2, h3, h4, p, ul, ol, blockquote, figure { margin: 0; }
ul, ol { padding-left: 0; list-style: none; }

/* ---------- Layout helpers ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}
@media (min-width: 1280px) {
  :root { --gutter: 32px; }
  .container { max-width: var(--container-lg); }
}

.section { padding: 80px 0; }
@media (min-width: 900px) { .section { padding: 120px 0; } }

.section-bone { background: var(--bone); color: var(--charcoal); }
.section-navy { background: var(--navy); color: var(--white); }

.centred { text-align: center; }

/* ---------- Typography ---------- */
.eyebrow {
  font-family: var(--mono);
  font-weight: 500;
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--slate);
  margin-bottom: 24px;
}
.eyebrow-coral { color: var(--coral); }

.hero-headline,
.display-md,
.display-sm {
  font-family: var(--sans);
  font-weight: 200;
  color: var(--navy);
  letter-spacing: -0.04em;
  line-height: 1.05;
}
.display-md { font-size: clamp(36px, 5.2vw, 56px); letter-spacing: -0.035em; }
.display-sm { font-size: clamp(32px, 4.4vw, 48px); letter-spacing: -0.03em; line-height: 1.1; }

.display-md.light, .display-sm.light, .hero-headline.light { color: var(--white); }

/* Brand inflection — coral 800 accent inside a 200 headline. */
.accent { font-weight: 800; color: var(--coral); }

.prose {
  max-width: 680px;
  font-size: 18px;
  line-height: 1.65;
  color: var(--charcoal);
}
.prose p + p { margin-top: 1.1em; }

.lead {
  max-width: 720px;
  font-family: var(--sans);
  font-weight: 300;
  font-size: clamp(18px, 1.7vw, 22px);
  line-height: 1.55;
  color: var(--charcoal);
  margin-top: 24px;
}
.lead.light { color: rgba(255, 255, 255, 0.8); }
.lead.centred { margin-left: auto; margin-right: auto; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  padding: 14px 26px;
  font-family: var(--sans);
  font-weight: 500;
  font-size: 15px;
  letter-spacing: 0.01em;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color 180ms ease, color 180ms ease, border-color 180ms ease;
}
.btn-primary { background: var(--coral); color: var(--white); }
.btn-primary:hover { background: var(--coral-deep); }
.btn-outline { background: transparent; color: var(--white); border-color: var(--white); }
.btn-outline:hover { background: var(--white); color: var(--navy); }
.btn-block { display: block; width: 100%; text-align: center; }

/* ============================================================
   HEADER
   Static bone background with navy text throughout — no transparent
   state, no scroll-state transition. The bar is the bar on every
   section of the page.
   ============================================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: var(--bone);
  border-bottom: 1px solid var(--stone);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: 100%;
  max-width: var(--container-lg);
  margin: 0 auto;
  padding: 18px var(--gutter);
}
.header-logo img { height: 64px; width: auto; }
@media (min-width: 900px) {
  .header-logo img { height: 96px; }
}
.header-nav { display: none; }
@media (min-width: 900px) {
  .header-nav {
    display: flex;
    gap: 32px;
  }
  .header-nav a {
    font-family: var(--sans);
    font-weight: 500;
    font-size: 14px;
    letter-spacing: 0.01em;
    color: var(--navy);
    transition: color 180ms ease;
  }
  .header-nav a:hover { color: var(--coral); }
}

.nav-toggle {
  display: inline-flex;
  flex-direction: column;
  justify-content: space-between;
  width: 28px;
  height: 20px;
  background: transparent;
  border: none;
  padding: 0;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--navy);
  transition: transform 180ms ease, opacity 180ms ease;
}
@media (min-width: 900px) {
  .nav-toggle { display: none; }
}

@media (max-width: 899px) {
  .header-nav.open {
    display: flex;
    flex-direction: column;
    gap: 0;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bone);
    border-bottom: 1px solid var(--stone);
    padding: 12px 0;
  }
  .header-nav.open a {
    display: block;
    padding: 14px var(--gutter);
    color: var(--navy);
    font-family: var(--sans);
    font-weight: 500;
    font-size: 16px;
    border-top: 1px solid var(--stone);
  }
  .header-nav.open a:first-child { border-top: none; }
  .nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(9px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-9px) rotate(-45deg); }
}

/* ============================================================
   SECTION 1 — HERO
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: flex-end;
  padding: 120px var(--gutter) 64px;
  background-image: url('assets/images/01-hero-sandton.jpg');
  background-size: cover;
  background-position: center;
  color: var(--white);
  overflow: hidden;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(20, 58, 94, 0.85) 100%);
  pointer-events: none;
}
.hero-content {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: var(--container-lg);
  margin: 0 auto;
  padding-bottom: 64px;
}
.hero-headline {
  color: var(--white);
  font-weight: 200;
  letter-spacing: -0.045em;
  font-size: clamp(48px, 8vw, 120px);
  line-height: 1.02;
  max-width: 18ch;
}
.hero-subhead {
  margin-top: 28px;
  font-family: var(--sans);
  font-weight: 300;
  font-size: clamp(18px, 1.8vw, 22px);
  line-height: 1.5;
  color: rgba(255, 255, 255, 0.8);
  max-width: 720px;
}
.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 36px;
}
.hero-factband {
  position: absolute;
  z-index: 2;
  left: 0;
  right: 0;
  bottom: 24px;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 0;
  padding: 0 var(--gutter);
  font-family: var(--mono);
  font-weight: 400;
  font-size: 11px;
  letter-spacing: 1px;
  color: rgba(255, 255, 255, 0.6);
  text-align: center;
}
.factband-sep { padding: 0 14px; }
@media (max-width: 599px) {
  .hero-factband { flex-direction: column; align-items: center; gap: 4px; bottom: 16px; }
  .factband-sep { display: none; }
  .hero-content { padding-bottom: 80px; }
}

/* ============================================================
   TWO-COLUMN (Platform, Operating model, About)
   ============================================================ */
.two-col-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
  align-items: start;
}
@media (min-width: 900px) {
  .two-col-grid {
    grid-template-columns: 1fr 1fr;
    gap: 80px;
  }
}

/* Platform (01) centres its two columns vertically — the right
   column prose is shorter than the left and looks better visually
   anchored against the middle of the headline than floating at
   the top. About (07) is now image-filling-column, so it gets
   stretch alignment instead (further down). */
@media (min-width: 900px) {
  #platform .two-col-grid { align-items: center; }
}

/* About (07) wants a touch more breathing room between the headline
   and the body — the global margin:0 reset on h2 had them sitting
   too tight against each other. */
#about .display-sm { margin-bottom: 28px; }
.col-image {
  width: 100%;
  height: auto;
  display: block;
}

/* ============================================================
   SECTION 3 — HOW WE WORK
   2×3 cell grid on desktop. Cells 1–5 are step cells (bone, stone
   border, coral mono number + navy title + body). Cell 6 is the
   commitment cell (navy fill, white centred text, no number) and
   lands bottom-right so the closing line is what the eye finishes on.
   ============================================================ */
.how-intro {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: start;
}
@media (min-width: 900px) {
  .how-intro { grid-template-columns: 1fr 1fr; gap: 80px; }
}
.how-intro-right {
  font-family: var(--sans);
  font-weight: 400;
  font-size: 18px;
  line-height: 1.65;
  color: var(--charcoal);
  max-width: 560px;
}
.how-intro-right p + p { margin-top: 1.1em; }
@media (min-width: 900px) {
  /* Pull the body copy down a touch so it sits flush with the headline
     rather than ranging above it. Visual balance only — content order
     in the DOM is unchanged. */
  .how-intro-right { margin-top: 12px; }
}

.steps-grid {
  margin-top: 56px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
@media (min-width: 900px) {
  .steps-grid { grid-template-columns: 1fr 1fr; gap: 20px; }
}

.step-cell {
  background: var(--bone);
  border: 1px solid var(--stone);
  padding: 32px;
  display: flex;
  flex-direction: column;
}
.step-cell .step-number {
  font-family: var(--mono);
  font-weight: 800;
  font-size: 32px;
  color: var(--coral);
  line-height: 1;
  letter-spacing: -0.01em;
  margin-bottom: 18px;
}
.step-cell .step-title {
  font-family: var(--sans);
  font-weight: 700;
  font-size: 22px;
  color: var(--navy);
  letter-spacing: -0.015em;
  line-height: 1.25;
  margin-bottom: 14px;
}
.step-cell .step-body {
  font-family: var(--sans);
  font-weight: 400;
  font-size: 16px;
  line-height: 1.6;
  color: var(--charcoal);
}

/* Commitment cell — same shell as the step cells (bone + stone border),
   no number, text centred. Differentiation comes from the centred layout
   and the coral accent phrase inside the line. */
.step-cell-commitment {
  align-items: center;
  justify-content: center;
  text-align: center;
}
.step-commitment-line {
  font-family: var(--sans);
  font-weight: 500;
  font-size: clamp(17px, 1.8vw, 21px);
  letter-spacing: -0.005em;
  line-height: 1.45;
  color: var(--navy);
}
.step-commitment-line .accent {
  /* Keep coral as the inflection but match the surrounding text weight
     so it reads as emphasis, not a yelled phrase. */
  font-weight: 700;
}

/* ============================================================
   SECTION 4 — Operating model bullet list
   ============================================================ */
.square-list {
  margin-top: 32px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-width: 620px;
}
.square-list li {
  position: relative;
  padding-left: 22px;
  font-family: var(--mono);
  font-weight: 400;
  font-size: 14px;
  line-height: 1.5;
  color: var(--slate);
}
.square-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 8px;
  height: 8px;
  background: var(--coral);
}

/* ============================================================
   SECTION 5 — Capabilities (two-column, image on right)
   ============================================================ */
.capabilities-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
  align-items: start;
}
@media (min-width: 900px) {
  .capabilities-grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    gap: 64px;
  }
}
.capabilities-left { min-width: 0; }
.capabilities-right { min-width: 0; }
.capabilities-image {
  width: 100%;
  height: auto;
  display: block;
}
@media (min-width: 900px) {
  /* Image fills the full row height of the right column rather than
     floating in the middle with whitespace above and below. object-fit
     cover crops to whatever aspect ratio the column ends up at; the
     atrium photo holds up well at tall verticals. */
  .capabilities-right { align-self: stretch; }
  .capabilities-image {
    width: 100%;
    height: 100%;
    aspect-ratio: auto;
    object-fit: cover;
  }
}

/* About (07) and Operating Model (03) right-column images fill their
   columns the same way. Operating Model's column also carries the
   bullet list under the image — image takes flex: 1, bullets sit at
   the bottom of the column. */
@media (min-width: 900px) {
  #about .two-col-right,
  #operating-model .two-col-right { align-self: stretch; }

  #about .two-col-right { display: block; }
  #about .col-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }

  #operating-model .two-col-right {
    display: flex;
    flex-direction: column;
  }
  #operating-model .col-image {
    flex: 1 1 auto;
    width: 100%;
    min-height: 0;
    object-fit: cover;
  }
  #operating-model .square-list {
    flex: 0 0 auto;
    margin-top: 32px;
  }
}

.cap-blocks {
  margin-top: 32px;
  display: flex;
  flex-direction: column;
}
.cap-block {
  padding: 32px 0;
  border-top: 1px solid var(--stone);
  max-width: 740px;
}
.cap-block:first-child { border-top: none; padding-top: 0; }
.cap-block:last-child { padding-bottom: 0; }
.cap-title {
  font-family: var(--sans);
  font-weight: 600;
  font-size: 22px;
  color: var(--navy);
  letter-spacing: -0.01em;
  margin-bottom: 14px;
  line-height: 1.3;
}
.cap-body {
  font-size: 17px;
  line-height: 1.6;
  color: var(--charcoal);
  margin-bottom: 14px;
}
/* Quiet "currently represented" line beneath each capability block —
   mono face echoes the eyebrow/fact-band treatment so it reads as
   metadata, not headline copy. Operator-brief link is the only place
   in the section that goes to coral. */
.cap-platform {
  font-family: var(--mono);
  font-weight: 400;
  font-size: 13px;
  letter-spacing: 0.5px;
  color: var(--slate);
  line-height: 1.55;
}
.cap-platform-name {
  font-weight: 600;
  color: var(--navy);
}
.cap-brief-link {
  color: var(--coral);
  border-bottom: 1px solid transparent;
  transition: border-color 160ms ease;
  padding-bottom: 2px;
  white-space: nowrap;
}
.cap-brief-link:hover {
  border-bottom-color: var(--coral);
}
/* Placeholder for capabilities whose operator brief isn't published yet.
   Inherits the cap-platform mono/slate styling — no coral, no hover —
   so it reads as an unlinked label rather than a broken link. Swap
   <span class="cap-brief-placeholder"> for <a class="cap-brief-link"
   href="..."> once the brief URL exists. */
.cap-brief-placeholder {
  white-space: nowrap;
}
.cap-close {
  margin-top: 40px;
  font-size: 16px;
  color: var(--slate);
  max-width: 740px;
}

/* ============================================================
   SECTION 6 — Selected situations (navy + tower overlay)
   ============================================================ */
.section-tower { position: relative; overflow: hidden; }
.tower-overlay {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.3;
  z-index: 0;
}
.section-tower::after {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(14, 41, 64, 0.55);
  z-index: 1;
}
.section-tower .container { position: relative; z-index: 2; }

.situations-grid {
  margin-top: 56px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px 56px;
}
@media (min-width: 900px) {
  .situations-grid { grid-template-columns: 1fr 1fr; }
}
.situation { color: var(--white); }
.situation-number {
  font-family: var(--mono);
  font-weight: 800;
  font-size: 48px;
  color: var(--coral);
  line-height: 1;
  margin-bottom: 16px;
}
.situation-title {
  font-family: var(--sans);
  font-weight: 600;
  font-size: 20px;
  color: var(--white);
  letter-spacing: -0.01em;
  margin-bottom: 12px;
  line-height: 1.3;
}
.situation-body {
  font-family: var(--sans);
  font-weight: 400;
  font-size: 15px;
  line-height: 1.65;
  color: rgba(255, 255, 255, 0.8);
  max-width: 540px;
}

/* ============================================================
   SECTION 7 — Areas of activity (2x2 sector grid)
   ============================================================ */
.sectors-grid {
  margin-top: 48px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}
@media (min-width: 700px) {
  .sectors-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
}
.sector-card {
  background: var(--bone);
  border: 1px solid var(--stone);
  padding: 32px;
}
.sector-title {
  font-family: var(--sans);
  font-weight: 600;
  font-size: 22px;
  color: var(--navy);
  letter-spacing: -0.01em;
  margin-bottom: 12px;
  line-height: 1.3;
}
.sector-card p {
  font-size: 16px;
  line-height: 1.6;
  color: var(--charcoal);
}
.areas-close {
  margin-top: 48px;
  text-align: center;
  font-size: 16px;
  color: var(--slate);
  max-width: 820px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.6;
}

/* ============================================================
   SECTION 9 — Contact (full-bleed image + form)
   ----------------------------------------------------------
   Overlay deliberately strong so the coral eyebrow at 100%
   reads cleanly against the blue-hour photograph beneath.
   ============================================================ */
.section-contact {
  position: relative;
  overflow: hidden;
  padding: 120px 0;
  color: var(--white);
}
.contact-bg {
  position: absolute; inset: 0;
  background-size: cover;
  background-position: center;
  z-index: 0;
}
.contact-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(20, 58, 94, 0.82) 0%, rgba(14, 41, 64, 0.92) 100%);
  z-index: 1;
}
.contact-inner { position: relative; z-index: 2; }

/* Contact eyebrow is left-aligned to match the rest of the site's
   section eyebrows; only the headline, lead and email link below it
   are centred. Coral colour and opacity inherit from .eyebrow-coral. */

/* Single prominent clickable email — no form, no fields. */
.contact-email-line {
  margin: 56px auto 0;
  text-align: center;
  font-family: var(--sans);
  font-weight: 200;
  font-size: clamp(28px, 4vw, 44px);
  letter-spacing: -0.02em;
  color: var(--white);
  line-height: 1.1;
}
.contact-email-line a {
  display: inline-block;
  color: var(--white);
  border-bottom: 1px solid rgba(255, 255, 255, 0.3);
  padding-bottom: 6px;
  transition: color 180ms ease, border-color 180ms ease;
}
.contact-email-line a:hover {
  color: var(--coral);
  border-bottom-color: var(--coral);
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  background: var(--navy);
  color: var(--white);
  padding: 72px 0 28px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
}
@media (min-width: 900px) {
  .footer-grid { grid-template-columns: 1.4fr 1fr 1fr; gap: 48px; }
}
.footer-mark { height: 64px; width: auto; margin-bottom: 18px; }
.footer-tagline {
  font-family: var(--mono);
  font-weight: 400;
  font-size: 11px;
  letter-spacing: 1.5px;
  color: rgba(255, 255, 255, 0.6);
  max-width: 320px;
  line-height: 1.5;
}
.footer-eyebrow {
  font-family: var(--mono);
  font-weight: 500;
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 18px;
}
.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-family: var(--sans);
  font-weight: 400;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.85);
}
.footer-links a { transition: color 160ms ease; }
.footer-links a:hover { color: var(--coral); }

.footer-bottom {
  margin-top: 64px;
  padding-top: 22px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: space-between;
  font-family: var(--mono);
  font-weight: 400;
  font-size: 10px;
  letter-spacing: 1.5px;
  color: rgba(255, 255, 255, 0.4);
  text-transform: uppercase;
}

/* ============================================================
   Responsive trims
   ============================================================ */
@media (max-width: 599px) {
  .section { padding: 64px 0; }
  .sector-card { padding: 24px; }
  .step-cell { padding: 24px; }
  .hero { padding: 100px 20px 56px; }
  .footer-bottom { font-size: 9px; }
}