/* ==========================================================================
   CDAI Solutions — Design Tokens & Global Styles
   ========================================================================== */

:root {
  /* Color */
  --navy-deep: #0A1F44;
  --navy-mid: #123262;
  --navy-pale: #1B3A63;
  --teal: #17C3B2;
  --teal-bright: #2DE1D2;
  --bg: #F5F8FB;
  --surface: #FFFFFF;
  --text: #1F2A44;
  --text-muted: #5B6B84;
  --border: #E2E8F0;
  --border-dark: #24406E;

  /* Type */
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Layout */
  --max-width: 1200px;
  --radius: 4px;
  --shadow-sm: 0 1px 3px rgba(10, 31, 68, 0.08);
  --shadow-md: 0 8px 24px rgba(10, 31, 68, 0.10);
}

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

html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}

body {
  font-family: var(--font-body);
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

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

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

ul { list-style: none; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--navy-deep);
  line-height: 1.15;
  font-weight: 600;
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(2.2rem, 4vw, 3.4rem); }
h2 { font-size: clamp(1.7rem, 3vw, 2.4rem); }
h3 { font-size: 1.3rem; }
h4 { font-size: 1.05rem; }

p { color: var(--text-muted); }

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

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

/* Eyebrow / system tag — signature mono label */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 14px;
}
.eyebrow::before {
  content: "";
  width: 8px;
  height: 8px;
  background: var(--teal);
  border-radius: 1px;
  box-shadow: 0 0 0 3px rgba(23, 195, 178, 0.15);
}
.eyebrow.on-dark { color: var(--teal-bright); }

/* ==========================================================================
   Header / Navigation
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 500;
  background: var(--navy-deep);
  border-bottom: 1px solid var(--border-dark);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  color: #fff;
  letter-spacing: -0.01em;
  display: flex;
  align-items: baseline;
  gap: 6px;
  flex-shrink: 0;
}
.logo .accent { color: var(--teal-bright); }
.logo .sub {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-left: 4px;
}

.main-nav { display: flex; align-items: center; }
.main-nav > ul { display: flex; align-items: center; gap: 2px; }

.main-nav > ul > li { position: relative; }

.main-nav > ul > li > a,
.main-nav > ul > li > button.nav-toggle {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 0.86rem;
  font-weight: 500;
  color: #C9D5E8;
  padding: 10px 12px;
  border-radius: var(--radius);
  background: none;
  border: none;
  font-family: var(--font-body);
  cursor: pointer;
  white-space: nowrap;
  position: relative;
}
.main-nav > ul > li > a::after {
  content: "";
  position: absolute;
  left: 12px; right: 12px; bottom: 4px;
  height: 2px;
  background: var(--teal-bright);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.2s ease;
}
.main-nav > ul > li > a:hover,
.main-nav > ul > li.active > a,
.main-nav > ul > li:hover > button.nav-toggle {
  color: #fff;
}
.main-nav > ul > li > a:hover::after,
.main-nav > ul > li.active > a::after {
  transform: scaleX(1);
}

.caret { font-size: 0.6rem; margin-top: 1px; opacity: 0.7; }

.dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--surface);
  min-width: 240px;
  box-shadow: var(--shadow-md);
  border-radius: 0 0 var(--radius) var(--radius);
  border-top: 2px solid var(--teal);
  padding: 8px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(4px);
  transition: all 0.15s ease;
}
.main-nav > ul > li:hover .dropdown,
.main-nav > ul > li:focus-within .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.dropdown a {
  display: block;
  padding: 9px 12px;
  font-size: 0.86rem;
  color: var(--text);
  border-radius: 3px;
}
.dropdown a:hover { background: var(--bg); color: var(--navy-deep); }
.dropdown .view-all {
  border-top: 1px solid var(--border);
  margin-top: 6px;
  padding-top: 10px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--teal);
}

.nav-cta {
  margin-left: 12px;
  background: var(--teal);
  color: var(--navy-deep) !important;
  font-weight: 600 !important;
  padding: 9px 18px !important;
  border-radius: var(--radius);
}
.nav-cta:hover { background: var(--teal-bright); }
.nav-cta::after { display: none !important; }

.mobile-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border-dark);
  border-radius: var(--radius);
  width: 42px;
  height: 38px;
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
}
.mobile-toggle span { width: 20px; height: 2px; background: #fff; display: block; }

@media (max-width: 1080px) {
  .main-nav { position: fixed; top: 72px; left: 0; right: 0; bottom: 0; background: var(--navy-deep); flex-direction: column; padding: 12px; overflow-y: auto; transform: translateX(-100%); transition: transform 0.25s ease; }
  .main-nav.open { transform: translateX(0); }
  .main-nav > ul { flex-direction: column; align-items: stretch; width: 100%; gap: 0; }
  .main-nav > ul > li { width: 100%; border-bottom: 1px solid var(--border-dark); }
  .main-nav > ul > li > a, .main-nav > ul > li > button.nav-toggle { width: 100%; color: #fff; padding: 14px 8px; justify-content: space-between; }
  .dropdown { position: static; box-shadow: none; border-top: none; background: var(--navy-mid); opacity: 1; visibility: visible; transform: none; display: none; max-height: 0; overflow: hidden; padding: 0; }
  .main-nav > ul > li.mobile-open .dropdown { display: block; max-height: 600px; padding: 6px; }
  .dropdown a { color: #C9D5E8; }
  .dropdown a:hover { background: var(--navy-pale); color: #fff; }
  .nav-cta { margin: 12px 8px; text-align: center; }
  .mobile-toggle { display: flex; }
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.92rem;
  padding: 13px 26px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.15s ease;
}
.btn-primary { background: var(--teal); color: var(--navy-deep); }
.btn-primary:hover { background: var(--teal-bright); transform: translateY(-1px); }
.btn-outline { border-color: rgba(255,255,255,0.35); color: #fff; }
.btn-outline:hover { border-color: var(--teal-bright); color: var(--teal-bright); }
.btn-ghost { border-color: var(--border); color: var(--navy-deep); }
.btn-ghost:hover { border-color: var(--teal); color: var(--teal); }
.btn-block { width: 100%; justify-content: center; }

/* ==========================================================================
   Hero
   ========================================================================== */

.hero {
  position: relative;
  background: var(--navy-deep);
  color: #fff;
  padding: 90px 0 80px;
  overflow: hidden;
}
.hero-network {
  position: absolute;
  inset: 0;
  opacity: 0.5;
  pointer-events: none;
}
.hero-inner {
  position: relative;
  z-index: 2;
  max-width: 720px;
}
.hero.hero-page { padding: 64px 0 64px; }
.hero h1 { color: #fff; margin-bottom: 18px; }
.hero p.lead { color: #B9C6DE; font-size: 1.1rem; max-width: 620px; margin-bottom: 32px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

.breadcrumb {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: #8AA0C4;
  letter-spacing: 0.04em;
  margin-bottom: 20px;
}
.breadcrumb a { color: #8AA0C4; }
.breadcrumb a:hover { color: var(--teal-bright); }
.breadcrumb .sep { margin: 0 6px; opacity: 0.5; }
.breadcrumb .current { color: var(--teal-bright); }

.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 48px;
  flex-wrap: wrap;
}
.hero-stats .stat-num {
  font-family: var(--font-mono);
  font-size: 1.7rem;
  color: var(--teal-bright);
  font-weight: 700;
}
.hero-stats .stat-label {
  font-size: 0.78rem;
  color: #8AA0C4;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: 4px;
}

/* ==========================================================================
   Sections
   ========================================================================== */

section { padding: 80px 0; }
.section-alt { background: var(--surface); }
.section-navy { background: var(--navy-deep); color: #fff; }
.section-navy h2, .section-navy h3, .section-navy h4 { color: #fff; }
.section-navy p { color: #AEBEDA; }

.section-head { max-width: 680px; margin-bottom: 48px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head p { margin-top: 14px; font-size: 1.02rem; }

/* Grid utilities */
.grid { display: grid; gap: 28px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 900px) { .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; } }

/* Bracket card — signature schematic-style card */
.card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 30px 26px;
  border-radius: var(--radius);
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.card::before, .card::after {
  content: "";
  position: absolute;
  width: 14px;
  height: 14px;
  border-top: 2px solid var(--teal);
  border-left: 2px solid var(--teal);
  top: -1px; left: -1px;
  opacity: 0;
  transition: opacity 0.15s ease;
}
.card::after {
  left: auto; right: -1px; top: auto; bottom: -1px;
  border-top: none; border-left: none;
  border-bottom: 2px solid var(--teal);
  border-right: 2px solid var(--teal);
}
.card:hover { transform: translateY(-3px); border-color: transparent; }
.card:hover::before, .card:hover::after { opacity: 1; }
.card .card-tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--teal);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 10px;
  display: block;
}
.card h3, .card h4 { margin-bottom: 10px; }
.card p { font-size: 0.94rem; }
.card a.card-link { display: inline-flex; align-items: center; gap: 6px; margin-top: 16px; font-size: 0.85rem; font-weight: 600; color: var(--navy-deep); }
.card a.card-link:hover { color: var(--teal); }

/* Feature row (icon-letter tile + text) */
.feature {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.feature-icon {
  flex-shrink: 0;
  width: 44px; height: 44px;
  border-radius: var(--radius);
  background: var(--navy-deep);
  color: var(--teal-bright);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.95rem;
}
.section-navy .feature-icon { background: var(--navy-pale); }
.feature h4 { margin-bottom: 6px; }
.feature p { font-size: 0.92rem; }

/* Process steps (legitimate ordered sequence) */
.process { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; counter-reset: step; }
@media (max-width: 900px) { .process { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .process { grid-template-columns: 1fr; } }
.process-step {
  position: relative;
  padding: 24px 20px 24px 0;
  border-top: 2px solid var(--border-dark);
}
.process-step .step-num {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--teal-bright);
  margin-bottom: 14px;
  display: block;
}
.process-step h4 { color: #fff; margin-bottom: 8px; }
.process-step p { font-size: 0.9rem; }

/* Logo strip */
.logo-strip { display: flex; flex-wrap: wrap; gap: 16px; align-items: center; }
.logo-chip {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  border: 1px solid var(--border);
  padding: 10px 18px;
  border-radius: var(--radius);
  background: var(--surface);
}

/* Split section */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
@media (max-width: 900px) { .split { grid-template-columns: 1fr; gap: 32px; } }
.split img, .placeholder-media { border-radius: var(--radius); }

.placeholder-media {
  aspect-ratio: 4/3;
  background: repeating-linear-gradient(135deg, var(--navy-mid), var(--navy-mid) 10px, var(--navy-pale) 10px, var(--navy-pale) 20px);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #8AA0C4;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  text-align: center;
  padding: 20px;
  border: 1px solid var(--border-dark);
}
.placeholder-media.light {
  background: repeating-linear-gradient(135deg, #E9EEF5, #E9EEF5 10px, #DCE4EF 10px, #DCE4EF 20px);
  color: var(--text-muted);
  border: 1px dashed #B9C6DE;
}

/* Checklist */
.checklist li { display: flex; gap: 10px; margin-bottom: 12px; font-size: 0.95rem; color: var(--text); }
.checklist li::before { content: "✓"; color: var(--teal); font-weight: 700; flex-shrink: 0; }
.section-navy .checklist li { color: #E2E9F5; }

/* Table */
.data-table { width: 100%; border-collapse: collapse; margin-top: 16px; }
.data-table th, .data-table td { text-align: left; padding: 14px 16px; border-bottom: 1px solid var(--border); font-size: 0.92rem; }
.data-table th { font-family: var(--font-mono); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-muted); }

/* CTA band */
.cta-band {
  background: var(--navy-deep);
  color: #fff;
  padding: 64px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-band h2 { color: #fff; margin-bottom: 14px; }
.cta-band p { color: #AEBEDA; max-width: 560px; margin: 0 auto 30px; }
.cta-band .hero-actions { justify-content: center; }

/* Form */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 640px) { .form-grid { grid-template-columns: 1fr; } }
.field { display: flex; flex-direction: column; gap: 6px; }
.field.full { grid-column: 1 / -1; }
.field label { font-size: 0.84rem; font-weight: 600; color: var(--navy-deep); }
.field input, .field select, .field textarea {
  font-family: var(--font-body);
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.94rem;
  background: var(--surface);
  color: var(--text);
}
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--teal); outline: none; box-shadow: 0 0 0 3px rgba(23,195,178,0.12); }

/* Badge / tag */
.tag-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 6px 12px;
  border: 1px solid var(--border-dark);
  border-radius: 20px;
  color: #C9D5E8;
}

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer { background: var(--navy-mid); color: #C9D5E8; padding: 64px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr 1.2fr; gap: 32px; padding-bottom: 48px; border-bottom: 1px solid var(--border-dark); }
@media (max-width: 900px) { .footer-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .footer-grid { grid-template-columns: 1fr; } }
.footer-grid h4 { color: #fff; font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 18px; font-family: var(--font-mono); font-weight: 600; }
.footer-grid ul li { margin-bottom: 10px; }
.footer-grid a { font-size: 0.9rem; color: #AEBEDA; }
.footer-grid a:hover { color: var(--teal-bright); }
.footer-about p { font-size: 0.9rem; color: #AEBEDA; margin: 16px 0 20px; max-width: 320px; }
.footer-logo { font-family: var(--font-display); font-weight: 700; font-size: 1.2rem; color: #fff; }
.footer-logo .accent { color: var(--teal-bright); }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; padding: 24px 0; flex-wrap: wrap; gap: 12px; font-size: 0.82rem; color: #8AA0C4; }
.footer-bottom a { color: #8AA0C4; }
.footer-bottom a:hover { color: var(--teal-bright); }
.social-row { display: flex; gap: 12px; }
.social-row a { width: 34px; height: 34px; border: 1px solid var(--border-dark); border-radius: var(--radius); display: flex; align-items: center; justify-content: center; font-family: var(--font-mono); font-size: 0.72rem; }
.social-row a:hover { border-color: var(--teal); color: var(--teal-bright); }

/* Utility */
.mt-8 { margin-top: 8px; } .mt-16 { margin-top: 16px; } .mt-24 { margin-top: 24px; } .mt-32 { margin-top: 32px; }
.text-center { text-align: center; }
.two-col-text { columns: 2; column-gap: 40px; }
@media (max-width: 760px) { .two-col-text { columns: 1; } }