:root {
  --bg: #0F1B2D;
  --bg-alt: #16283F;
  --line: #24405C;
  --text: #EAF1F5;
  --muted: #90A6B8;
  --accent: #3FA796;
  --accent-warm: #E8B04B;

  --font-head: "IBM Plex Sans Condensed", sans-serif;
  --font-body: "IBM Plex Sans", sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.55;
}

.wrap {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}

a { color: inherit; }

h1, h2, h3 {
  font-family: var(--font-head);
  font-weight: 600;
  line-height: 1.15;
  margin: 0 0 0.5em;
}

h1 { font-size: clamp(2rem, 4vw, 2.9rem); }
h2 { font-size: clamp(1.4rem, 2.5vw, 1.9rem); }
h3 { font-size: 1.15rem; }

p { color: var(--muted); max-width: 60ch; }

:focus-visible {
  outline: 2px solid var(--accent-warm);
  outline-offset: 3px;
}

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

.site-header {
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 20px;
  padding-bottom: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand-mark {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px rgba(63, 167, 150, 0.18);
  flex-shrink: 0;
}

.brand-text {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text);
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand-text.small { font-size: 1.05rem; }

.brand-sub {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 0.68rem;
  letter-spacing: 0.02em;
  color: var(--muted);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 0.95rem;
}

.main-nav a {
  text-decoration: none;
  color: var(--muted);
}

.main-nav a:hover { color: var(--text); }

.nav-cta {
  color: var(--accent) !important;
  font-weight: 500;
}

/* ---------- Flash messages ---------- */

.flash-wrap { padding-top: 20px; }

.flash {
  padding: 12px 16px;
  border-radius: 4px;
  font-size: 0.95rem;
}

.flash-success {
  background: rgba(63, 167, 150, 0.14);
  border: 1px solid var(--accent);
  color: var(--text);
}

.flash-error {
  background: rgba(232, 176, 74, 0.14);
  border: 1px solid var(--accent-warm);
  color: var(--text);
}

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

.hero {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  align-items: center;
  padding: 64px 24px 40px;
}

.hero-kicker {
  font-size: 0.85rem;
  color: var(--accent);
  margin: 0 0 12px;
  letter-spacing: 0.01em;
}

.hero-lead { font-size: 1.05rem; }

.hero-actions {
  display: flex;
  gap: 14px;
  margin-top: 28px;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 12px 22px;
  border-radius: 4px;
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--accent);
  color: #0B1826;
}

.btn-primary:hover { background: #4fbcaa; }

.btn-ghost {
  border-color: var(--line);
  color: var(--text);
}

.btn-ghost:hover { border-color: var(--accent); }

.hero-diagram svg { width: 100%; height: auto; }

.link {
  stroke: var(--line);
  stroke-width: 1.5;
}

.node-core {
  fill: var(--bg-alt);
  stroke: var(--accent);
  stroke-width: 2;
}

.node-core-label {
  fill: var(--text);
  font-family: var(--font-head);
  font-size: 13px;
  text-anchor: middle;
}

.node {
  fill: var(--bg-alt);
  stroke: var(--accent-warm);
  stroke-width: 1.5;
}

.node-label {
  fill: var(--muted);
  font-family: var(--font-body);
  font-size: 12px;
  text-anchor: middle;
}

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

.section { padding: 40px 24px; }

.page-head { padding-bottom: 8px; }

.service-list {
  list-style: none;
  margin: 24px 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.service-row {
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.service-row h3 { margin-bottom: 6px; }
.service-row p { margin: 0; }

.text-link {
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
}

.text-link:hover { text-decoration: underline; }

.band {
  background: var(--bg-alt);
  border-radius: 6px;
}

.band-lead { max-width: 55ch; }

.client-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1px;
  background: var(--line);
  margin-top: 24px;
  border: 1px solid var(--line);
}

.client-item {
  background: var(--bg-alt);
  padding: 20px;
  font-family: var(--font-head);
  font-weight: 500;
  color: var(--text);
}

.service-detail-list {
  border-top: 1px solid var(--line);
}

.service-detail {
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
  max-width: 65ch;
}

.cta-band {
  text-align: left;
  border-top: 1px solid var(--line);
  margin-top: 20px;
}

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

.contact-layout {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 48px;
  align-items: start;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.contact-form label {
  font-size: 0.85rem;
  color: var(--muted);
  margin-top: 14px;
}

.contact-form input,
.contact-form textarea {
  background: var(--bg-alt);
  border: 1px solid var(--line);
  border-radius: 4px;
  color: var(--text);
  padding: 10px 12px;
  font-family: var(--font-body);
  font-size: 0.95rem;
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-color: var(--accent);
}

.contact-form button { margin-top: 22px; align-self: flex-start; }

.contact-info h2 { font-size: 1.2rem; }

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

.site-footer {
  border-top: 1px solid var(--line);
  margin-top: 40px;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 20px;
  padding: 32px 24px;
}

.footer-tagline {
  margin-top: 8px;
  font-size: 0.9rem;
  max-width: 40ch;
}

.footer-links {
  display: flex;
  gap: 20px;
  font-size: 0.9rem;
}

.footer-links a { text-decoration: none; color: var(--muted); }
.footer-links a:hover { color: var(--text); }

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

@media (max-width: 760px) {
  .hero { grid-template-columns: 1fr; padding-top: 40px; }
  .hero-diagram { order: -1; max-width: 280px; margin: 0 auto; }
  .contact-layout { grid-template-columns: 1fr; }
}