/* ============================================================
   Code Continuum — Legacy Systems Specialist
   Design tokens
   ============================================================ */
:root {
  --ink: #10161f;
  --ink-soft: #1a2330;
  --blueprint: #1e3a5f;
  --blueprint-line: rgba(255, 255, 255, 0.09);
  --paper: #ece6d8;
  --paper-line: rgba(16, 22, 31, 0.08);
  --brass: #a9793e;
  --brass-bright: #c79355;
  --teal: #3f7368;
  --white: #ffffff;
  --ink-70: rgba(16, 22, 31, 0.72);
  --ink-50: rgba(16, 22, 31, 0.52);
  --white-80: rgba(255, 255, 255, 0.82);
  --white-55: rgba(255, 255, 255, 0.55);

  --serif: "Source Serif 4", "Iowan Old Style", Georgia, serif;
  --sans: "IBM Plex Sans", -apple-system, "Segoe UI", Helvetica, Arial, sans-serif;
  --mono: "IBM Plex Mono", "SFMono-Regular", Menlo, Consolas, monospace;

  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--sans);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

img, svg { max-width: 100%; display: block; }

a { color: inherit; }

h1, h2, h3, h4 {
  font-family: var(--serif);
  font-weight: 600;
  line-height: 1.15;
  margin: 0 0 0.5em;
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(2.1rem, 4.4vw, 3.4rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.25rem); }
h3 { font-size: 1.25rem; }

p { margin: 0 0 1.1em; max-width: 62ch; }
p.lede { font-size: 1.15rem; /*color: var(--ink-70);*/ }

.container {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
}

/* Focus visibility */
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--brass);
  outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation: none !important; transition: none !important; }
}

/* ---------------- Header / nav ---------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--ink);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.logo {
  font-family: var(--serif);
  font-size: 1.28rem;
  color: var(--white);
  text-decoration: none;
  display: flex;
  align-items: baseline;
  gap: 8px;
}
.logo .mark { color: var(--brass-bright); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 34px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-links a {
  color: var(--white-80);
  text-decoration: none;
  font-size: 0.96rem;
}
.nav-links a:hover { color: var(--white); }
.nav-links a.current { color: var(--brass-bright); }

.nav-cta {
  border: 1px solid var(--brass);
  color: var(--white) !important;
  padding: 9px 18px;
  font-size: 0.92rem;
}
.nav-cta:hover { background: var(--brass); }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  margin: 5px 0;
}

@media (max-width: 860px) {
  .nav-links {
    position: absolute;
    top: 76px; left: 0; right: 0;
    background: var(--ink);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    max-height: 0;
    overflow: hidden;
    border-bottom: 1px solid rgba(255,255,255,0.08);
  }
  .nav-links.open { max-height: 400px; }
  .nav-links li { width: 100%; }
  .nav-links a { display: block; padding: 16px 24px; width: 100%; border-top: 1px solid rgba(255,255,255,0.06); }
  .nav-cta { border: none; margin: 4px 24px 16px; }
  .nav-toggle { display: block; }
}

/* ---------------- Hero ---------------- */
.hero {
  background:
    repeating-linear-gradient(0deg, var(--blueprint-line) 0 1px, transparent 1px 48px),
    repeating-linear-gradient(90deg, var(--blueprint-line) 0 1px, transparent 1px 48px),
    linear-gradient(180deg, var(--ink) 0%, var(--blueprint) 130%);
  color: var(--white);
  padding: 76px 0 88px;
}

.hero .container {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
}

.hero-eyebrow-line {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--brass-bright);
  font-family: var(--mono);
  font-size: 0.86rem;
  margin-bottom: 18px;
}
.hero-eyebrow-line .rule { width: 30px; height: 1px; background: var(--brass-bright); }

.hero h1 { color: var(--white); max-width: 15ch; }
.hero p.lede { color: var(--white-80); max-width: 46ch; margin-top: 18px; }

.hero-actions { display: flex; gap: 16px; margin-top: 34px; flex-wrap: wrap; }

.btn {
  display: inline-block;
  font-family: var(--sans);
  font-size: 0.98rem;
  font-weight: 500;
  padding: 13px 24px;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
}
.btn-primary { background: var(--brass); color: var(--ink); border-color: var(--brass); }
.btn-primary:hover { background: var(--brass-bright); }
.btn-ghost { border-color: rgba(255,255,255,0.35); color: var(--white); }
.btn-ghost:hover { border-color: var(--white); }
.btn-ghost-dark { border-color: rgba(16,22,31,0.3); color: var(--ink); }
.btn-ghost-dark:hover { border-color: var(--ink); }

@media (max-width: 860px) {
  .hero .container { grid-template-columns: 1fr; }
  .hero { padding: 48px 0 56px; }
}

/* ---------------- Sections ---------------- */
section { padding: 76px 0; }
.section-paper { background: var(--paper); }
.section-ink { background: var(--ink); color: var(--white); }
.section-ink p { color: var(--white-80); }
.section-ink h2 { color: var(--white); }

.section-intro { max-width: 62ch; margin-bottom: 44px; }
.section-intro h2 { margin-bottom: 14px; }

.divider {
  width: 56px;
  height: 3px;
  background: var(--brass);
  margin: 0 0 22px;
}

/* ---------------- Blueprint panel (services) ---------------- */
.panels {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--paper-line);
  border: 1px solid var(--paper-line);
}
.panel {
  background: var(--paper);
  padding: 34px 30px 30px;
  position: relative;
}
.panel::before {
  content: "";
  position: absolute;
  top: 14px; left: 14px;
  width: 10px; height: 10px;
  border-top: 1px solid var(--brass);
  border-left: 1px solid var(--brass);
}
.panel::after {
  content: "";
  position: absolute;
  bottom: 14px; right: 14px;
  width: 10px; height: 10px;
  border-bottom: 1px solid var(--brass);
  border-right: 1px solid var(--brass);
}
.panel .tag {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--teal);
  margin-bottom: 10px;
  display: block;
}
.panel h3 { margin-bottom: 10px; }
.panel p { color: var(--ink-70); font-size: 0.98rem; }

@media (max-width: 860px) {
  .panels { grid-template-columns: 1fr; }
}

/* ---------------- Technology index grid ---------------- */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1px;
  background: var(--blueprint-line);
  border: 1px solid var(--blueprint-line);
}
.tech-card {
  background: var(--ink);
  padding: 26px 20px;
  text-decoration: none;
  color: var(--white);
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: background 0.15s ease;
}
.tech-card:hover { background: var(--ink-soft); }
.tech-card svg { width: 34px; height: 34px; }
.tech-card .name { font-family: var(--serif); font-size: 1.02rem; }
.tech-card .sub { font-family: var(--mono); font-size: 0.74rem; color: var(--white-55); }

@media (max-width: 980px) { .tech-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 640px) { .tech-grid { grid-template-columns: repeat(2, 1fr); } }

/* ---------------- Two column ---------------- */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}
@media (max-width: 860px) {
  .two-col { grid-template-columns: 1fr; gap: 36px; }
}

/* ---------------- Lists ---------------- */
.check-list { list-style: none; margin: 0; padding: 0; }
.check-list li {
  padding: 10px 0 10px 26px;
  border-bottom: 1px solid var(--paper-line);
  position: relative;
  font-size: 0.98rem;
}
.section-ink .check-list li { border-bottom-color: var(--blueprint-line); }
.check-list li::before {
  content: "";
  position: absolute;
  left: 0; top: 18px;
  width: 8px; height: 8px;
  background: var(--brass);
}
.check-list li:last-child { border-bottom: none; }

/* ---------------- CTA band ---------------- */
.cta-band {
  background: var(--blueprint);
  color: var(--white);
  padding: 64px 0;
  text-align: left;
}
.cta-band .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  flex-wrap: wrap;
}
.cta-band h2 { color: var(--white); margin-bottom: 4px; max-width: 20ch; }
.cta-band p { color: var(--white-80); margin: 0; }

/* ---------------- Footer ---------------- */
.site-footer {
  background: var(--ink);
  color: var(--white-55);
  padding: 56px 0 30px;
  font-size: 0.92rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-grid h4 {
  font-family: var(--sans);
  color: var(--white-80);
  font-size: 0.86rem;
  text-transform: none;
  margin-bottom: 14px;
}
.footer-grid ul { list-style: none; margin: 0; padding: 0; }
.footer-grid li { margin-bottom: 9px; }
.footer-grid a { color: var(--white-55); text-decoration: none; }
.footer-grid a:hover { color: var(--white); }
.footer-brand .logo { margin-bottom: 12px; }
.footer-brand p { color: var(--white-55); font-size: 0.9rem; }
.footer-bottom {
  padding-top: 22px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 0.82rem;
}

@media (max-width: 760px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

/* ---------------- Tech detail page ---------------- */
.tech-hero {
  background: linear-gradient(180deg, var(--ink) 0%, var(--blueprint) 160%);
  color: var(--white);
  padding: 56px 0 64px;
}
.tech-hero .container { display: flex; gap: 30px; align-items: center; }
.tech-hero-icon {
  flex: 0 0 auto;
  width: 74px; height: 74px;
  border: 1px solid rgba(255,255,255,0.25);
  display: flex; align-items: center; justify-content: center;
}
.tech-hero-icon svg { width: 40px; height: 40px; }
.tech-hero h1 { color: var(--white); margin-bottom: 8px; }
.tech-hero .sub { font-family: var(--mono); color: var(--brass-bright); font-size: 0.9rem; }
.breadcrumb {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--white-55);
  margin-bottom: 18px;
}
.breadcrumb a { color: var(--white-55); text-decoration: none; }
.breadcrumb a:hover { color: var(--white); }

@media (max-width: 640px) {
  .tech-hero .container { flex-direction: column; align-items: flex-start; text-align: left; }
}

.pair-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--paper-line);
  border: 1px solid var(--paper-line);
  margin-top: 8px;
}
.pair-grid > div { background: var(--paper); padding: 26px; }
.pair-grid h3 { font-size: 1.05rem; }
@media (max-width: 760px) { .pair-grid { grid-template-columns: 1fr; } }

/* ---------------- Contact / About extras ---------------- */
.detail-row {
  display: flex;
  gap: 18px;
  padding: 18px 0;
  border-bottom: 1px solid var(--paper-line);
}
.detail-row:last-child { border-bottom: none; }
.detail-row .label {
  flex: 0 0 140px;
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--teal);
  padding-top: 2px;
}

form.contact-form { display: flex; flex-direction: column; gap: 18px; max-width: 520px; }
.field { display: flex; flex-direction: column; gap: 6px; }
.field label { font-size: 0.88rem; color: var(--ink-70); }
.field input, .field select, .field textarea {
  font-family: var(--sans);
  font-size: 1rem;
  padding: 12px 14px;
  border: 1px solid rgba(16,22,31,0.25);
  background: var(--white);
  color: var(--ink);
}
.field textarea { resize: vertical; min-height: 130px; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: 2px solid var(--brass);
  outline-offset: 1px;
  border-color: var(--brass);
}
.form-note { font-size: 0.85rem; color: var(--ink-50); }