/* ========================================================================
   3 Tenets Security LLC — styles-v2.css (editorial layout, 2026-09)
   Palette unchanged: navy #101585 / #0C1158 / #0A0E45, terracotta
   #B4533E / #E8836D, white and #F4F5F9.
   ===================================================================== */

:root {
  --navy: #101585;
  --navy-deep: #0C1158;
  --navy-ink: #0A0E45;
  --accent: #B4533E;
  --accent-light: #E8836D;
  --paper: #FFFFFF;
  --paper-2: #F4F5F9;
  --rule: #DDE1EA;
  --ink: #131A33;
  --ink-2: #4A5370;
  --ink-3: #6B7390;
  --serif: "Iowan Old Style", "Charter", "Bitstream Charter", "Sitka Text", Cambria, Georgia, serif;
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --wrap: 1180px;
}

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

html { scroll-behavior: smooth; scroll-padding-top: 76px; }
body {
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
img { display: block; max-width: 100%; }
ol, ul { list-style: none; }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 28px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

h1, h2 { font-family: var(--serif); font-weight: 600; letter-spacing: -.01em; color: var(--navy-deep); }
h2 { font-size: clamp(1.8rem, 3.4vw, 2.6rem); line-height: 1.15; }
h3, h4 { font-weight: 650; color: var(--ink); }

.kicker {
  font-size: .78rem; font-weight: 600; letter-spacing: .14em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 14px;
}
.kicker--light { color: var(--accent-light); }

/* ---------- Buttons & links ---------- */
.btn {
  display: inline-block; font: 600 1rem/1 var(--sans); padding: 16px 26px;
  border: 0; border-radius: 3px; cursor: pointer; text-decoration: none;
  transition: background-color .15s;
}
.btn-solid { background: var(--navy); color: #fff; }
.btn-solid:hover { background: var(--navy-ink); }
.btn-accent { background: var(--accent); color: #fff; }
.btn-accent:hover { background: #9A4331; }
.link-arrow {
  display: inline-block; font-weight: 600; color: var(--navy); text-decoration: none;
  border-bottom: 2px solid var(--accent); padding-bottom: 2px;
}
.link-arrow::after { content: " \2192"; }
.link-arrow:hover { color: var(--accent); }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--accent); outline-offset: 3px;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50; background: var(--paper);
  border-bottom: 1px solid var(--rule);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.brand-mark { width: 40px; height: 40px; object-fit: contain; }
.brand-text { font-family: var(--serif); font-size: 1.3rem; font-weight: 600; color: var(--navy-deep); }
.brand-sub { font-family: var(--sans); font-size: .72rem; font-weight: 600; letter-spacing: .2em; text-transform: uppercase; color: var(--accent); margin-left: 4px; }

.nav-menu { display: flex; align-items: center; gap: 30px; }
.nav-menu a { font-size: .95rem; font-weight: 500; color: var(--ink-2); text-decoration: none; padding: 6px 0; }
.nav-menu a:hover { color: var(--navy); box-shadow: inset 0 -2px 0 var(--accent); }
.nav-menu .nav-cta { color: var(--navy); font-weight: 600; border: 1.5px solid var(--navy); padding: 8px 16px; border-radius: 3px; }
.nav-menu .nav-cta:hover { background: var(--navy); color: #fff; box-shadow: none; }
.nav-toggle {
  display: none; font: 600 .9rem var(--sans); color: var(--navy); background: none;
  border: 1.5px solid var(--navy); border-radius: 3px; padding: 7px 14px; cursor: pointer;
}

/* ---------- Hero ---------- */
.hero { padding: 96px 0 88px; border-bottom: 1px solid var(--rule); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr); gap: 72px; align-items: end; }
.hero h1 { font-size: clamp(2.3rem, 5vw, 3.9rem); line-height: 1.08; margin-bottom: 28px; }
.hero-lead { font-size: 1.15rem; color: var(--ink-2); max-width: 600px; margin-bottom: 36px; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 28px; }

.hero-brief { border-top: 3px solid var(--navy-deep); }
.hero-brief dl > div { padding: 16px 0; border-bottom: 1px solid var(--rule); }
.hero-brief dt { font-size: .75rem; font-weight: 600; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 4px; }
.hero-brief dd { font-size: .98rem; color: var(--ink); }

/* ---------- Tenets ---------- */
.tenets { background: var(--navy-deep); color: #fff; padding: 88px 0; }
.tenets-intro { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 48px; align-items: end; margin-bottom: 56px; }
.tenets-intro h2 { color: #fff; }
.tenets-intro p { color: rgba(255,255,255,.75); max-width: 460px; }
.tenet-row { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 1px solid rgba(255,255,255,.2); }
.tenet-row li { padding: 36px 36px 8px 0; }
.tenet-row li + li { padding-left: 36px; border-left: 1px solid rgba(255,255,255,.2); }
.tenet-letter { display: block; font-family: var(--serif); font-size: 4.5rem; line-height: 1; color: var(--accent-light); margin-bottom: 18px; }
.tenet-row h3 { color: #fff; font-size: 1.25rem; margin-bottom: 10px; }
.tenet-row p { color: rgba(255,255,255,.75); font-size: .98rem; }

/* ---------- Split layout (sticky side column) ---------- */
.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 2fr); gap: 72px; }
.split-side { align-self: start; position: sticky; top: 108px; }
.split-side h2 { margin-bottom: 18px; }
.side-note { color: var(--ink-2); margin-bottom: 24px; }

/* ---------- Services ---------- */
.services { padding: 104px 0; }
.svc-group + .svc-group { margin-top: 48px; }
.svc-group-title {
  display: flex; align-items: center; gap: 16px; font-size: .8rem; letter-spacing: .16em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 4px;
}
.svc-group-title::after { content: ""; flex: 1; height: 1px; background: var(--rule); }
.svc { display: grid; grid-template-columns: 56px minmax(0, 1fr); column-gap: 8px; padding: 26px 0; border-bottom: 1px solid var(--rule); }
.svc-num { grid-row: span 2; font-family: var(--serif); font-size: 1.1rem; color: var(--ink-3); padding-top: 2px; }
.svc h4 { font-size: 1.2rem; color: var(--navy-deep); margin-bottom: 6px; }
.svc p { color: var(--ink-2); }

/* ---------- AI ---------- */
.ai { background: var(--navy-ink); color: #fff; padding: 104px 0; }
.ai-head { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); gap: 64px; align-items: end; margin-bottom: 56px; }
.ai-head h2 { color: #fff; }
.ai-head > p { color: rgba(255,255,255,.75); }

.flow { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); margin-bottom: 64px; counter-reset: flow; }
.flow li {
  position: relative; padding: 18px 20px 0 0; font-size: .9rem; color: rgba(255,255,255,.65);
  border-top: 2px solid rgba(255,255,255,.25);
}
.flow li::before {
  counter-increment: flow; content: counter(flow);
  position: absolute; top: -9px; left: 0; width: 16px; height: 16px; border-radius: 50%;
  background: var(--navy-ink); border: 2px solid rgba(255,255,255,.5); font-size: 0;
}
.flow li span { display: block; font-size: 1.05rem; font-weight: 600; color: #fff; margin-bottom: 4px; }
.flow .flow-human { border-top-color: var(--accent-light); }
.flow .flow-human::before { background: var(--accent-light); border-color: var(--accent-light); }
.flow .flow-human span { color: var(--accent-light); }

.ai-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 64px; }
.ai-item { padding: 24px 0; border-top: 1px solid rgba(255,255,255,.16); }
.ai-item h3 { color: #fff; font-size: 1.1rem; margin-bottom: 6px; }
.ai-item p { color: rgba(255,255,255,.72); font-size: .97rem; }
.ai-note { margin-top: 40px; padding-top: 24px; border-top: 1px solid rgba(255,255,255,.16); color: rgba(255,255,255,.72); }
.ai-note strong { color: #fff; }

/* ---------- Approach ---------- */
.approach { padding: 104px 0; background: var(--paper-2); }
.steps { counter-reset: step; }
.steps li { counter-increment: step; display: grid; grid-template-columns: 72px minmax(0, 1fr); padding: 26px 0; border-top: 1px solid var(--rule); }
.steps li:last-child { border-bottom: 1px solid var(--rule); }
.steps li::before { content: counter(step, decimal-leading-zero); grid-row: span 2; font-family: var(--serif); font-size: 2rem; line-height: 1; color: var(--accent); }
.steps h3 { font-size: 1.2rem; color: var(--navy-deep); margin-bottom: 4px; }
.steps p { color: var(--ink-2); }

/* ---------- About ---------- */
.about { padding: 104px 0; }
.about-top { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.25fr); gap: 72px; margin-bottom: 88px; }
.pull {
  font-family: var(--serif); font-size: clamp(1.7rem, 3vw, 2.4rem); line-height: 1.25; color: var(--navy-deep);
  padding-left: 28px; border-left: 4px solid var(--accent); align-self: start;
}
.about-copy p { color: var(--ink-2); margin-bottom: 16px; }
.about-copy p.kicker { color: var(--accent); }
.about-copy strong { color: var(--ink); font-weight: 600; }

.ledger-title { font-size: clamp(1.5rem, 2.4vw, 1.9rem); margin-bottom: 20px; }
.ledger table { width: 100%; border-collapse: collapse; }
.ledger th, .ledger td { text-align: left; vertical-align: top; padding: 14px 16px 14px 0; border-bottom: 1px solid var(--rule); }
.ledger tbody th[scope="row"] { width: 110px; font-family: var(--serif); font-size: 1.15rem; font-weight: 600; color: var(--navy); }
.ledger td:nth-child(2) { width: 38%; font-weight: 600; color: var(--ink); }
.ledger td:nth-child(3) { color: var(--ink-2); font-size: .96rem; }
.ledger-group th { padding-top: 32px; font-size: .78rem; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; color: var(--accent); border-bottom: 2px solid var(--navy-deep); }
.ledger tbody tr:first-child th { padding-top: 0; }

/* ---------- Contact ---------- */
.contact { background: var(--navy-deep); color: #fff; padding: 104px 0; }
.contact-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr); gap: 72px; align-items: start; }
.contact-info h2 { color: #fff; margin-bottom: 18px; }
.contact-info > p { color: rgba(255,255,255,.75); margin-bottom: 36px; max-width: 440px; }
.contact-lines li { display: grid; grid-template-columns: 80px 1fr; padding: 14px 0; border-top: 1px solid rgba(255,255,255,.18); }
.contact-lines li:last-child { border-bottom: 1px solid rgba(255,255,255,.18); }
.contact-lines span { font-size: .75rem; font-weight: 600; letter-spacing: .12em; text-transform: uppercase; color: rgba(255,255,255,.55); padding-top: 3px; }
.contact-lines a { color: #fff; text-decoration: none; font-size: 1.08rem; }
.contact-lines a:hover { color: var(--accent-light); }

.contact-form { background: var(--paper); color: var(--ink); padding: 40px; border-radius: 4px; }
.field { margin-bottom: 18px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field label { display: block; font-size: .88rem; font-weight: 600; color: var(--ink); margin-bottom: 6px; }
.field label span { color: var(--accent); }
.field input, .field select, .field textarea {
  width: 100%; font: inherit; font-size: 1rem; color: var(--ink); background: var(--paper);
  border: 1px solid #C9CEDB; border-radius: 3px; padding: 12px 14px;
}
.field textarea { resize: vertical; min-height: 130px; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--navy); box-shadow: 0 0 0 3px rgba(16,21,133,.12); }
.field input.invalid, .field textarea.invalid { border-color: #B42318; box-shadow: 0 0 0 3px rgba(180,35,24,.12); }
.field select {
  appearance: none; padding-right: 40px;
  background: var(--paper) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' fill='none' stroke='%234A5370' stroke-width='2' viewBox='0 0 24 24'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E") no-repeat right 14px center;
}
.form-note { margin-top: 14px; font-size: .92rem; min-height: 1.2em; }
.form-note.success { color: #1E7B4A; }
.form-note.error { color: #B42318; }

/* ---------- Footer ---------- */
.site-footer { background: var(--navy-ink); color: rgba(255,255,255,.7); padding: 40px 0 28px; border-top: 1px solid rgba(255,255,255,.08); }
.footer-inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 24px; }
.brand--footer .brand-mark { width: 32px; height: 32px; }
.brand--footer .brand-text { color: #fff; font-size: 1.15rem; }
.brand--footer .brand-sub { color: var(--accent-light); }
.footer-nav { display: flex; flex-wrap: wrap; gap: 24px; }
.footer-nav a { color: rgba(255,255,255,.72); text-decoration: none; font-size: .92rem; }
.footer-nav a:hover { color: #fff; }
.footer-bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px; margin-top: 28px; padding-top: 20px; border-top: 1px solid rgba(255,255,255,.12); font-size: .85rem; color: rgba(255,255,255,.55); }

/* ---------- Error page (kept for 404.shtml etc.) ---------- */
.error-page { min-height: 70vh; display: grid; place-items: center; text-align: center; padding: 80px 24px; }
.error-page .code { font-family: var(--serif); font-size: clamp(3rem, 10vw, 6rem); color: var(--navy); line-height: 1; }
.error-page p { color: var(--ink-2); margin: 16px 0 28px; }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .hero-grid, .tenets-intro, .ai-head, .about-top, .contact-grid, .split { grid-template-columns: minmax(0, 1fr); gap: 40px; }
  .split-side { position: static; }
  .flow { grid-template-columns: repeat(2, minmax(0, 1fr)); row-gap: 28px; }
  .about-top { margin-bottom: 64px; }
}
@media (max-width: 820px) {
  .nav-toggle { display: inline-block; }
  .main-nav { position: absolute; top: 68px; left: 0; right: 0; }
  .nav-menu {
    display: none; flex-direction: column; align-items: stretch; gap: 0;
    background: var(--paper); border-bottom: 1px solid var(--rule); padding: 8px 28px 20px;
  }
  .nav-menu.open { display: flex; }
  .nav-menu a { display: block; padding: 12px 0; border-bottom: 1px solid var(--rule); }
  .nav-menu a:hover { box-shadow: none; }
  .nav-menu .nav-cta { margin-top: 12px; text-align: center; border-bottom: 1.5px solid var(--navy); }
}
@media (max-width: 720px) {
  body { font-size: 16px; }
  .wrap { padding: 0 20px; }
  .hero { padding: 64px 0; }
  .tenets, .services, .ai, .approach, .about, .contact { padding: 72px 0; }
  .tenet-row { grid-template-columns: minmax(0, 1fr); }
  .tenet-row li, .tenet-row li + li { padding: 28px 0; border-left: 0; border-bottom: 1px solid rgba(255,255,255,.2); }
  .tenet-letter { font-size: 3.2rem; }
  .ai-list { grid-template-columns: minmax(0, 1fr); }
  .flow { grid-template-columns: minmax(0, 1fr); }
  .field-row { grid-template-columns: minmax(0, 1fr); }
  .contact-form { padding: 28px 22px; }
  .svc { grid-template-columns: 40px minmax(0, 1fr); }
  .steps li { grid-template-columns: 56px minmax(0, 1fr); }
  .ledger table, .ledger tbody, .ledger tr, .ledger th, .ledger td { display: block; width: auto !important; }
  .ledger tr:not(.ledger-group) { padding: 14px 0; border-bottom: 1px solid var(--rule); }
  .ledger tr:not(.ledger-group) th, .ledger tr:not(.ledger-group) td { border: 0; padding: 0; }
  .ledger td:nth-child(2) { margin: 2px 0 4px; }
  .ledger-group th { padding-top: 28px; padding-bottom: 8px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}