/* ============================================
   AUREVON TECHNOLOGIES — Design System
   Palette sampled from the physical brand mark.
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Archivo:wght@500;600;700;800&family=Inter:wght@400;500;600&family=IBM+Plex+Mono:wght@500&display=swap');

:root {
  /* Core palette — grounded in the reception wall + mark */
  --navy-deepest: #1a1d26;
  --navy-base: #333642;
  --navy-mid: #454858;
  --navy-line: #565a68;
  --silver: #c7ccd6;
  --silver-dim: #9497a6;
  --blue-accent: #4a7fa5;
  --blue-accent-soft: #6b9cbf;
  --gold-accent: #c9a24a;
  --paper: #f3f4f6;
  --paper-raised: #ffffff;
  --ink: #1d2027;
  --ink-soft: #565a66;
  --ink-faint: #868c99;

  --font-display: 'Archivo', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;

  --max-width: 1180px;
  --radius: 3px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a { color: inherit; text-decoration: none; }

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

@media (max-width: 640px) {
  .wrap { padding: 0 20px; }
}

/* ---------- Typography ---------- */

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.15;
}

h1 { font-size: clamp(2.4rem, 5vw, 3.6rem); font-weight: 800; }
h2 { font-size: clamp(1.7rem, 3.2vw, 2.4rem); }
h3 { font-size: 1.25rem; }

p { color: var(--ink-soft); }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--blue-accent);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
}

.eyebrow::before {
  content: '';
  width: 18px;
  height: 1px;
  background: var(--blue-accent);
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 26px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.18s ease;
}

.btn-primary {
  background: var(--gold-accent);
  color: var(--navy-deepest);
}
.btn-primary:hover { background: #d9b25e; transform: translateY(-1px); }

.btn-ghost {
  background: transparent;
  border-color: var(--navy-line);
  color: var(--silver);
}
.btn-ghost:hover { border-color: var(--silver); }

.btn-outline-dark {
  background: transparent;
  border-color: var(--navy-base);
  color: var(--navy-base);
}
.btn-outline-dark:hover { background: var(--navy-base); color: var(--paper); }

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

.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 22px 0;
  transition: background 0.25s ease, padding 0.25s ease, box-shadow 0.25s ease;
}

.site-header.scrolled {
  background: var(--navy-deepest);
  padding: 14px 0;
  box-shadow: 0 4px 24px rgba(0,0,0,0.25);
}

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

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand img { width: 30px; height: 30px; }

.brand-text {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.05rem;
  color: var(--silver);
  letter-spacing: 0.02em;
}

.brand-text span { color: var(--blue-accent-soft); }

.nav-links {
  display: flex;
  gap: 34px;
  align-items: center;
}

.nav-links a {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--silver-dim);
  transition: color 0.15s ease;
}

.nav-links a:hover, .nav-links a.active { color: var(--silver); }

.nav-cta {
  padding: 10px 20px;
  font-size: 0.88rem;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--silver);
  font-size: 1.4rem;
  cursor: pointer;
}

@media (max-width: 860px) {
  .nav-links { 
    position: fixed;
    top: 64px; left: 0; right: 0;
    background: var(--navy-deepest);
    flex-direction: column;
    padding: 28px 32px;
    gap: 22px;
    transform: translateY(-120%);
    transition: transform 0.25s ease;
  }
  .nav-links.open { transform: translateY(0); }
  .nav-toggle { display: block; }
}

/* ---------- Hero (photo-based) ---------- */

.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: flex-end;
  background-size: cover;
  background-position: center 30%;
  overflow: hidden;
}

.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(26,29,38,0.42) 0%, rgba(26,29,38,0.28) 40%, rgba(26,29,38,0.94) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  padding-bottom: 88px;
  max-width: 760px;
}

.hero-content .eyebrow { color: var(--gold-accent); }
.hero-content .eyebrow::before { background: var(--gold-accent); }

.hero h1 { color: var(--silver); margin-bottom: 18px; }

.hero-tagline {
  font-size: 1.15rem;
  color: var(--silver-dim);
  max-width: 560px;
  margin-bottom: 34px;
}

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

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

section { padding: 96px 0; }

.section-dark {
  background: var(--navy-deepest);
  color: var(--silver);
}
.section-dark p { color: var(--silver-dim); }
.section-dark h2, .section-dark h3 { color: var(--silver); }

.section-head {
  max-width: 620px;
  margin-bottom: 56px;
}

.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }

/* ---------- Pillars / Service grid ---------- */

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

@media (max-width: 860px) {
  .pillar-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .pillar-grid { grid-template-columns: 1fr; }
}

.pillar {
  background: var(--navy-deepest);
  padding: 38px 32px;
  transition: background 0.2s ease;
}

.pillar:hover { background: var(--navy-base); }

.pillar-mark {
  width: 26px; height: 26px;
  margin-bottom: 22px;
  opacity: 0.85;
}

.pillar h3 { color: var(--silver); margin-bottom: 10px; }
.pillar p { font-size: 0.92rem; margin-bottom: 14px; }

.pillar-outcome {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  color: var(--blue-accent-soft);
  text-transform: uppercase;
}

/* ---------- Identity strip (Design/Build/Secure/Implement/Enhance) ---------- */

.identity-strip {
  display: flex;
  border-top: 1px solid var(--navy-line);
  border-bottom: 1px solid var(--navy-line);
  overflow-x: auto;
}

.identity-item {
  flex: 1;
  min-width: 140px;
  padding: 26px 24px;
  border-right: 1px solid var(--navy-line);
}
.identity-item:last-child { border-right: none; }

.identity-item .num {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--gold-accent);
  display: block;
  margin-bottom: 8px;
}

.identity-item h4 {
  font-family: var(--font-display);
  font-size: 0.98rem;
  color: var(--silver);
  font-weight: 700;
}

/* ---------- Two-column content ---------- */

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

@media (max-width: 780px) {
  .split { grid-template-columns: 1fr; gap: 36px; }
}

/* ---------- Cards (light section) ---------- */

.card {
  background: var(--paper-raised);
  border: 1px solid #e2e4e8;
  padding: 30px;
  border-radius: var(--radius);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

@media (max-width: 860px) { .card-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .card-grid { grid-template-columns: 1fr; } }

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

.cta-band {
  background: var(--navy-base);
  color: var(--silver);
  padding: 72px 0;
  text-align: center;
}

.cta-band h2 { color: var(--silver); margin-bottom: 14px; }
.cta-band p { max-width: 520px; margin: 0 auto 32px; color: var(--silver-dim); }
.cta-band .hero-actions { justify-content: center; }

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

footer {
  background: var(--navy-deepest);
  color: var(--silver-dim);
  padding: 56px 0 32px;
  font-size: 0.88rem;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--navy-line);
  margin-bottom: 24px;
}

.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--blue-accent-soft);
  margin-bottom: 16px;
  font-weight: 500;
}

.footer-col a, .footer-col p {
  display: block;
  margin-bottom: 10px;
  color: var(--silver-dim);
  font-size: 0.9rem;
}
.footer-col a:hover { color: var(--silver); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  color: var(--ink-faint);
  font-size: 0.8rem;
}

/* ---------- Page header (non-home pages) ---------- */

.page-header {
  background: var(--navy-deepest);
  color: var(--silver);
  padding: 168px 0 72px;
}

.page-header .eyebrow { color: var(--gold-accent); }
.page-header .eyebrow::before { background: var(--gold-accent); }
.page-header p { max-width: 560px; color: var(--silver-dim); font-size: 1.05rem; }

/* ---------- Service detail blocks ---------- */

.service-block {
  padding: 56px 0;
  border-bottom: 1px solid #e2e4e8;
}

.service-block:last-child { border-bottom: none; }

.service-block-inner {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 40px;
}

@media (max-width: 640px) {
  .service-block-inner { grid-template-columns: 1fr; gap: 16px; }
}

.service-num {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--blue-accent);
}

.service-block h3 { margin-bottom: 12px; font-size: 1.5rem; }

.service-outcome {
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid #e2e4e8;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--ink-soft);
}
.service-outcome strong { color: var(--ink); }

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

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 56px;
}

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

.contact-channel {
  display: flex;
  gap: 16px;
  padding: 20px 0;
  border-bottom: 1px solid #e2e4e8;
}

.contact-channel .icon {
  width: 20px; height: 20px;
  flex-shrink: 0;
  margin-top: 3px;
}

.contact-channel h4 { font-size: 0.98rem; margin-bottom: 4px; }
.contact-channel p { font-size: 0.9rem; margin: 0; }

form.contact-form label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--ink);
}

form.contact-form input,
form.contact-form select,
form.contact-form textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid #d5d8dd;
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 0.95rem;
  margin-bottom: 20px;
  background: var(--paper-raised);
  color: var(--ink);
}

form.contact-form textarea { resize: vertical; min-height: 120px; }

form.contact-form input:focus,
form.contact-form select:focus,
form.contact-form textarea:focus {
  outline: 2px solid var(--blue-accent);
  outline-offset: 1px;
}

.form-note {
  font-size: 0.82rem;
  color: var(--ink-faint);
  margin-top: -8px;
}

/* ---------- Reduced motion ---------- */

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