/* ============================================================
   Sightline Cyber — shared stylesheet
   Palette: cool paper / ink navy / ledger green
   Type: Source Serif 4 (display) · Inter (body) · IBM Plex Mono (labels)
   ============================================================ */

:root {
  --paper: #f5f4ef;
  --paper-raised: #fdfdfb;
  --ink: #17242e;
  --ink-soft: #4a5560;
  --ink-faint: #7b848c;
  --hairline: #d9d6cb;
  --hairline-soft: #e6e4da;
  --green: #17242e;      /* accent = ink navy (monochrome scheme) */
  --green-deep: #0c161e; /* hover state, darker navy */
  --green-wash: #e2e6e9; /* light navy wash */
  --serif: "Source Serif 4", Georgia, "Times New Roman", serif;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", "SF Mono", Menlo, monospace;
  --maxw: 1120px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection { background: var(--green); color: #fff; }

.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 32px;
}

/* ---------- Type helpers ---------- */

.eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--green);
  display: flex;
  align-items: center;
  gap: 12px;
}

.eyebrow::before {
  content: "";
  display: inline-block;
  width: 28px;
  height: 1px;
  background: var(--green);
  flex: none;
}

h1, h2, h3 { font-family: var(--serif); font-weight: 600; line-height: 1.15; }

.lede {
  font-size: 20px;
  line-height: 1.6;
  color: var(--ink-soft);
  max-width: 620px;
}

/* ---------- Header / nav ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(245, 244, 239, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--hairline);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.wordmark {
  display: flex;
  align-items: center;
  gap: 11px;
  text-decoration: none;
  color: var(--ink);
}

.wordmark svg { flex: none; }

.wordmark-text {
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.wordmark-text span { color: var(--green); }

.site-nav {
  display: flex;
  align-items: center;
  gap: 30px;
}

.site-nav a {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--ink-soft);
  padding: 6px 0;
  border-bottom: 2px solid transparent;
  transition: color .15s ease, border-color .15s ease;
}

.site-nav a:hover { color: var(--ink); }

.site-nav a.active {
  color: var(--ink);
  border-bottom-color: var(--green);
}

.btn {
  display: inline-block;
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 12px 22px;
  border: 1px solid var(--ink);
  color: var(--ink);
  background: transparent;
  cursor: pointer;
  transition: background .15s ease, color .15s ease, border-color .15s ease;
}

.btn:hover { background: var(--ink); color: var(--paper); }

.btn.btn-solid {
  background: var(--green);
  border-color: var(--green);
  color: #fff;
}

.btn.btn-solid:hover { background: var(--green-deep); border-color: var(--green-deep); }

.site-nav .btn { padding: 10px 18px; }

.nav-toggle { display: none; }

/* ---------- Hero ---------- */

.hero { padding: 96px 0 72px; position: relative; }

.hero h1 {
  font-size: clamp(38px, 5.2vw, 58px);
  max-width: 720px;
  margin: 22px 0 24px;
  letter-spacing: -0.01em;
}

.hero h1 em {
  font-style: italic;
  color: var(--green);
}

.hero .lede { margin-bottom: 36px; }

.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* sightline rule — horizon line with crosshair tick */
.sightline {
  position: relative;
  height: 1px;
  background: var(--hairline);
  margin: 0;
}

.sightline::after {
  content: "";
  position: absolute;
  left: 18%;
  top: -5px;
  width: 11px;
  height: 11px;
  border: 1.5px solid var(--green);
  border-radius: 50%;
  background: var(--paper);
}

.sightline::before {
  content: "";
  position: absolute;
  left: calc(18% + 4.5px);
  top: -12px;
  width: 1.5px;
  height: 25px;
  background: var(--green);
  opacity: .55;
}

/* ---------- Experience banner (marquee) ---------- */

.banner {
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
  background: var(--paper-raised);
  padding: 26px 0 30px;
  overflow: hidden;
}

.banner-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-faint);
  text-align: center;
  margin-bottom: 18px;
}

.marquee {
  display: flex;
  overflow: hidden;
  user-select: none;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}

.marquee-track {
  display: flex;
  flex: none;
  align-items: center;
  gap: 64px;
  padding-right: 64px;
  animation: marquee 36s linear infinite;
}

.marquee:hover .marquee-track { animation-play-state: paused; }

@keyframes marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-100%); }
}

@media (prefers-reduced-motion: reduce) {
  .marquee-track { animation: none; }
  .marquee { flex-wrap: wrap; justify-content: center; }
}

.marquee-track li {
  list-style: none;
  font-family: var(--serif);
  font-size: 21px;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--ink-soft);
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 64px;
}

.marquee-track li::after {
  content: "·";
  color: var(--green);
  font-size: 24px;
}

/* ---------- Sections ---------- */

.section { padding: 88px 0; }

.section-head { margin-bottom: 52px; }

.section-head h2 {
  font-size: clamp(28px, 3.6vw, 40px);
  margin: 18px 0 16px;
  max-width: 640px;
}

.section-alt { background: var(--paper-raised); border-top: 1px solid var(--hairline-soft); border-bottom: 1px solid var(--hairline-soft); }

/* ---------- Timeline services (home overview) ---------- */

.timeline {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  padding-top: 34px;
}

.timeline::before {
  content: "";
  position: absolute;
  top: 6px;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--hairline);
}

.timeline-card { position: relative; }

.timeline-card::before {
  content: "";
  position: absolute;
  top: -32px;
  left: 0;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  border: 1.5px solid var(--green);
  background: var(--paper);
}

.timeline-phase {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 12px;
}

.timeline-card h3 { font-size: 23px; margin-bottom: 12px; }

.timeline-card p { color: var(--ink-soft); font-size: 16px; }

.timeline-card .more {
  display: inline-block;
  margin-top: 14px;
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--green);
  text-decoration: none;
  border-bottom: 1px solid var(--green-wash);
  transition: border-color .15s ease;
}

.timeline-card .more:hover { border-bottom-color: var(--green); }

/* ---------- Audience strip (who we serve) ---------- */

.audience-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--hairline);
  border: 1px solid var(--hairline);
}

.audience-cell {
  background: var(--paper-raised);
  padding: 30px 28px;
}

.audience-cell h3 { font-size: 19px; margin-bottom: 8px; }

.audience-cell p { font-size: 15.5px; color: var(--ink-soft); }

/* ---------- Service detail blocks (services page) ---------- */

.svc-block {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 56px;
  padding: 64px 0;
  border-top: 1px solid var(--hairline);
}

.svc-block:first-of-type { border-top: none; }

.svc-side { position: sticky; top: 104px; align-self: start; }

.svc-phase {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 10px;
}

.svc-side h2 { font-size: 30px; margin-bottom: 14px; }

.svc-side .svc-meta {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--ink-faint);
  line-height: 1.8;
}

.svc-body p { color: var(--ink-soft); margin-bottom: 18px; max-width: 640px; }

.svc-body h4 {
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink);
  margin: 30px 0 14px;
}

.svc-list { list-style: none; max-width: 640px; }

.svc-list li {
  padding: 13px 0 13px 26px;
  border-top: 1px solid var(--hairline-soft);
  position: relative;
  font-size: 16px;
  color: var(--ink-soft);
}

.svc-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 21px;
  width: 7px;
  height: 7px;
  border: 1.5px solid var(--green);
  border-radius: 50%;
}

.svc-list li strong { color: var(--ink); font-weight: 600; }

/* ---------- Team ---------- */

.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 28px;
}

.team-creds a {
  color: var(--ink-soft);
  text-decoration: none;
  border-bottom: 1px solid var(--hairline);
}

.team-creds a:hover { color: var(--ink); border-bottom-color: var(--ink); }

.team-card {
  background: var(--paper-raised);
  border: 1px solid var(--hairline);
  padding: 34px 30px;
  display: flex;
  flex-direction: column;
}

.team-portrait {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  background: var(--green-wash);
  border: 1px solid var(--hairline);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--serif);
  font-size: 30px;
  font-weight: 600;
  color: var(--green);
  margin-bottom: 22px;
  overflow: hidden;
}

.team-portrait img { width: 100%; height: 100%; object-fit: cover; }

.team-card h3 { font-size: 22px; margin-bottom: 4px; }

.team-role {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 16px;
}

.team-card p { font-size: 15px; color: var(--ink-soft); margin-bottom: 12px; }

.team-creds {
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid var(--hairline-soft);
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--ink-faint);
  letter-spacing: 0.04em;
}

.team-card.placeholder { border-style: dashed; background: transparent; }

.team-card.placeholder .team-portrait { background: transparent; border-style: dashed; color: var(--ink-faint); }

/* ---------- Principles / approach rows ---------- */

.principles { border-top: 1px solid var(--hairline); }

.principle-row {
  display: grid;
  grid-template-columns: 72px 260px 1fr;
  gap: 36px;
  padding: 30px 0;
  border-bottom: 1px solid var(--hairline);
  align-items: baseline;
}

.principle-num {
  font-family: var(--mono);
  font-size: 14px;
  color: var(--green);
}

.principle-row h3 { font-size: 20px; }

.principle-row p { color: var(--ink-soft); font-size: 16px; max-width: 560px; }

/* ---------- CTA band ---------- */

.cta-band {
  background: var(--ink);
  color: var(--paper);
  padding: 84px 0;
}

.cta-band .eyebrow { color: #93a5b1; }
.cta-band .eyebrow::before { background: #93a5b1; }

.cta-band h2 {
  font-size: clamp(28px, 3.6vw, 40px);
  margin: 18px 0 18px;
  max-width: 620px;
}

.cta-band p { color: #aeb8bf; max-width: 560px; margin-bottom: 32px; }

.cta-band .btn { border-color: var(--paper); color: var(--paper); }
.cta-band .btn:hover { background: var(--paper); color: var(--ink); }
.cta-band .btn.btn-solid { background: var(--paper); border-color: var(--paper); color: var(--ink); }
.cta-band .btn.btn-solid:hover { background: #fff; border-color: #fff; }

/* ---------- Contact ---------- */

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 72px;
  align-items: start;
}

.contact-info h1 { font-size: clamp(32px, 4vw, 44px); margin: 20px 0 18px; }

.contact-info p { color: var(--ink-soft); margin-bottom: 26px; max-width: 440px; }

.contact-direct {
  font-family: var(--mono);
  font-size: 14px;
  line-height: 2.1;
}

.contact-direct a { color: var(--green); text-decoration: none; border-bottom: 1px solid var(--green-wash); }
.contact-direct a:hover { border-bottom-color: var(--green); }

.contact-form {
  background: var(--paper-raised);
  border: 1px solid var(--hairline);
  padding: 40px;
}

.form-field { margin-bottom: 22px; }

.form-field label {
  display: block;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 8px;
}

.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  font-family: var(--sans);
  font-size: 16px;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--hairline);
  padding: 12px 14px;
  outline: none;
  transition: border-color .15s ease;
}

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus { border-color: var(--green); }

.form-field textarea { min-height: 130px; resize: vertical; }

/* ---------- Footer ---------- */

.site-footer {
  border-top: 1px solid var(--hairline);
  padding: 44px 0 52px;
  background: var(--paper);
}

.footer-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 32px;
  flex-wrap: wrap;
}

.footer-brand .wordmark-text { font-size: 17px; }

.footer-note {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-faint);
  margin-top: 10px;
  max-width: 420px;
  line-height: 1.8;
}

.footer-links { display: flex; gap: 26px; }

.footer-links a {
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
  text-decoration: none;
}

.footer-links a:hover { color: var(--ink); }

/* ---------- Page hero (interior pages) ---------- */

.page-hero { padding: 76px 0 56px; }

.page-hero h1 {
  font-size: clamp(34px, 4.4vw, 50px);
  margin: 20px 0 20px;
  max-width: 700px;
}

/* ---------- Responsive ---------- */

@media (max-width: 900px) {
  .timeline, .audience-grid, .team-grid { grid-template-columns: 1fr; }
  .timeline { gap: 40px; padding-top: 0; }
  .timeline::before { display: none; }
  .timeline-card::before { display: none; }
  .svc-block { grid-template-columns: 1fr; gap: 24px; }
  .svc-side { position: static; }
  .contact-grid { grid-template-columns: 1fr; gap: 44px; }
  .principle-row { grid-template-columns: 40px 1fr; }
  .principle-row p { grid-column: 2; }
}

@media (max-width: 760px) {
  .site-nav { display: none; }
  .nav-toggle {
    display: block;
    background: none;
    border: 1px solid var(--hairline);
    font-family: var(--mono);
    font-size: 12px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: 9px 14px;
    color: var(--ink);
    cursor: pointer;
  }
  .site-nav.open {
    display: flex;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    background: var(--paper-raised);
    border-bottom: 1px solid var(--hairline);
    padding: 20px 32px 26px;
    gap: 18px;
  }
  .hero { padding: 64px 0 56px; }
  .section { padding: 64px 0; }
}