/* ============================================================
   NODICAL TECHNOLOGIES — Design System
   Signature: the connected-node motif from the brand mark,
   carried through as a real structural device (not decoration).
   ============================================================ */

/* FONTS: Currently using Google Fonts via @import (external dependency).
   For MAXIMUM SECURITY & PRIVACY: Self-host fonts instead.
   1. Download: Space Grotesk, Manrope, IBM Plex Mono (WOFF2)
   2. Place in /assets/fonts/
   3. Replace @import below with @font-face declarations
   4. Update CSP: remove https://fonts.googleapis.com and https://fonts.gstatic.com
   See FONTS.md for detailed instructions. */

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

:root{
  /* --- Color tokens, grounded in the logo mark --- */
  --ink:            #14142B;
  --ink-soft:       #4A4766;
  --paper:          #FAF9FC;
  --paper-dim:      #F1EEF7;
  --line:           #E4DFEE;

  --indigo-deep:    #180F3E;
  --indigo-deep-2:  #241558;

  --magenta:        #C4188E;
  --magenta-light:  #E45FB8;
  --violet:         #3B2A9C;
  --violet-light:   #5C46C9;

  --gradient-brand: linear-gradient(135deg, var(--magenta) 0%, var(--violet) 100%);
  --gradient-brand-soft: linear-gradient(135deg, rgba(196,24,142,0.12) 0%, rgba(59,42,156,0.12) 100%);

  --shadow-sm: 0 1px 2px rgba(20,20,43,0.06);
  --shadow-md: 0 8px 24px rgba(20,20,43,0.08);
  --shadow-lg: 0 24px 64px rgba(20,20,43,0.14);

  --radius: 18px;
  --radius-sm: 10px;

  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Manrope', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;

  --wrap: 1180px;
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin:0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  line-height: 1.6;
}
img{ max-width:100%; display:block; }
a{ color:inherit; }
.wrap{ max-width: var(--wrap); margin:0 auto; padding:0 32px; }

h1,h2,h3,h4{
  font-family: var(--font-display);
  font-weight:700;
  line-height:1.1;
  margin:0 0 0.5em;
  letter-spacing:-0.01em;
}
h1{ font-size: clamp(38px, 5.4vw, 68px); }
h2{ font-size: clamp(28px, 3.4vw, 42px); }
h3{ font-size: 21px; }
p{ margin:0 0 1em; color: var(--ink-soft); }
.lead{ font-size: 18px; color: var(--ink-soft); max-width: 560px; }

.eyebrow{
  display:inline-flex; align-items:center; gap:8px;
  font-family: var(--font-mono); font-size:12.5px; font-weight:600;
  letter-spacing:0.14em; text-transform:uppercase;
  color: var(--magenta);
  margin-bottom:18px;
}
.eyebrow::before{
  content:''; width:7px; height:7px; border-radius:50%;
  background: var(--gradient-brand); flex-shrink:0;
}

.gradient-text{
  background: var(--gradient-brand);
  -webkit-background-clip:text; background-clip:text;
  color:transparent;
}

/* --- Buttons --- */
.btn{
  display:inline-flex; align-items:center; gap:10px;
  padding:14px 26px; border-radius: 999px;
  font-family: var(--font-body); font-weight:700; font-size:15px;
  text-decoration:none; cursor:pointer; border:1.5px solid transparent;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, color 0.2s ease;
}
.btn-primary{
  background: var(--gradient-brand); color:#fff;
  box-shadow: var(--shadow-md);
}
.btn-primary:hover{ transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.btn-outline{
  background:transparent; border-color: var(--line); color: var(--ink);
}
.btn-outline:hover{ border-color: var(--magenta); color: var(--magenta); }
.btn-ghost-light{
  background:transparent; border-color: rgba(255,255,255,0.28); color:#fff;
}
.btn-ghost-light:hover{ border-color:#fff; }

/* --- Header --- */
header{
  position: sticky; top:0; z-index:50;
  background: rgba(250,249,252,0.86);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav-inner{
  display:flex; align-items:center; justify-content:space-between;
  padding:14px 32px; max-width: var(--wrap); margin:0 auto;
}
.logo-mark{ display:flex; align-items:center; position:relative; }
.logo-mark::before{
  content:'';
  position:absolute;
  inset:-8px;
  background:var(--paper);
  border-radius:8px;
  z-index:-1;
}
.logo-mark img{ height:52px; width:auto; }
nav.links{ display:flex; gap:34px; align-items:center; }
nav.links a{
  font-size:14.5px; font-weight:600; text-decoration:none; color: var(--ink);
  position:relative; padding-bottom:4px;
}
nav.links a::after{
  content:''; position:absolute; left:0; right:100%; bottom:0; height:2px;
  background: var(--gradient-brand); transition: right 0.25s ease;
}
nav.links a:hover::after, nav.links a.active::after{ right:0; }
nav.links a.active{ color: var(--magenta); }
.menu-toggle{ display:none; background:none; border:none; cursor:pointer; padding:6px; flex-direction:column; gap:5px; }
.menu-toggle span{ width:22px; height:2px; background: var(--ink); display:block; }

/* --- Footer --- */
footer{ background: var(--indigo-deep); color: rgba(255,255,255,0.72); padding:72px 0 28px; }
.foot-grid{ display:grid; grid-template-columns:1.2fr repeat(4,0.9fr); gap:32px; margin-bottom:56px; }
.foot-brand img{ height:38px; margin-bottom:16px; filter:brightness(0) invert(1); }
.foot-brand p{ color:rgba(255,255,255,0.5); font-size:13.5px; max-width:260px; }
footer h5{
  color:#fff; font-size:12.5px; font-weight:600; letter-spacing:0.1em;
  text-transform:uppercase; font-family: var(--font-mono); margin-bottom:18px;
}
footer ul{ list-style:none; padding:0; margin:0; }
footer li{ margin-bottom:11px; }
footer a{ color:rgba(255,255,255,0.65); text-decoration:none; font-size:14px; }
footer a:hover{ color:#fff; }
.foot-bottom{
  border-top:1px solid rgba(255,255,255,0.12); padding-top:26px;
  display:flex; justify-content:space-between; flex-wrap:wrap; gap:12px;
  font-size:13px; color:rgba(255,255,255,0.45);
}

/* --- Sections --- */
section{ padding:100px 0; }
.section-dark{ background: var(--indigo-deep); color:rgba(255,255,255,0.82); }
.section-dark h2, .section-dark h3{ color:#fff; }
.section-dark p{ color:rgba(255,255,255,0.62); }
.section-dim{ background: var(--paper-dim); }
.section-head{ max-width:640px; margin:0 0 56px; }
.section-head.center{ margin-left:auto; margin-right:auto; text-align:center; }

/* --- Node network signature illustration --- */
.node-field{ position:relative; }
.node-field svg{ width:100%; height:auto; display:block; }
.node-dot{ fill: url(#nodeGradient); }
.node-line{ stroke: url(#nodeGradient); stroke-width:1.4; opacity:0.55; fill:none; }

/* --- Cards --- */
.card{
  background:#fff; border:1px solid var(--line); border-radius: var(--radius);
  padding:32px; transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}
.card:hover{ transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color:transparent; }

/* --- Services node-chain layout --- */
.service-chain{ position:relative; }
.service-chain::before{
  content:''; position:absolute; left:35px; top:0; bottom:0; width:2px;
  background: linear-gradient(var(--magenta), var(--violet));
  opacity:0.25;
}
.service-node{ position:relative; display:grid; grid-template-columns:72px 1fr; gap:28px; padding-bottom:64px; }
.service-node:last-child{ padding-bottom:0; }
.service-node-marker{
  width:72px; height:72px; border-radius:50%;
  background: var(--gradient-brand); color:#fff;
  display:flex; align-items:center; justify-content:center;
  font-family: var(--font-mono); font-weight:600; font-size:13px;
  box-shadow: var(--shadow-md); z-index:1;
}
.service-node-body h3{ margin-bottom:10px; }
.cap-list{ list-style:none; padding:0; margin:18px 0 0; display:grid; grid-template-columns:1fr 1fr; gap:10px 24px; }
.cap-list li{ font-size:14.5px; color: var(--ink-soft); display:flex; align-items:baseline; gap:8px; }
.cap-list li::before{ content:'—'; color: var(--magenta); flex-shrink:0; }

/* --- Hero --- */
.hero{ padding:76px 0 90px; overflow:hidden; }
.hero-grid{ display:grid; grid-template-columns:1.05fr 0.95fr; gap:56px; align-items:center; }
.hero-actions{ display:flex; gap:16px; margin-top:32px; flex-wrap:wrap; }

/* --- Stat row --- */
.stat-row{ display:grid; grid-template-columns:repeat(4,1fr); gap:24px; margin-top:64px; }
.stat{ border-left:2px solid var(--line); padding-left:18px; }
.stat .num{ font-family:var(--font-display); font-size:34px; font-weight:700; }
.stat .label{ font-size:13px; color: var(--ink-soft); }

/* --- CTA band --- */
.cta-band{
  background: var(--indigo-deep);
  background-image: radial-gradient(circle at 15% 20%, rgba(196,24,142,0.35), transparent 45%),
                     radial-gradient(circle at 85% 80%, rgba(59,42,156,0.45), transparent 50%);
  border-radius: 28px; padding:64px 56px; text-align:center; color:#fff;
}
.cta-band h2{ color:#fff; }
.cta-band p{ color:rgba(255,255,255,0.68); max-width:520px; margin:0 auto 28px; }
.cta-actions{ display:flex; gap:16px; justify-content:center; flex-wrap:wrap; }

/* --- Brand spotlight card --- */
.brand-spotlight{
  display:grid; grid-template-columns:1fr 1fr; gap:0;
  border-radius: var(--radius); overflow:hidden; box-shadow: var(--shadow-lg);
}
.brand-spotlight-media{ background: var(--paper-dim); position:relative; min-height:380px; overflow:hidden; }
.brand-spotlight-media img{ width:100%; height:100%; object-fit:cover; }
.brand-spotlight-placeholder{
  position:absolute; inset:0; display:flex; flex-direction:column; align-items:center; justify-content:center;
  gap:28px;
  background: var(--indigo-deep);
  z-index: 10;
}
.brand-spotlight-placeholder .mark{
  width:190px; height:auto; opacity:1;
}
.brand-spotlight-placeholder span{ font-family:var(--font-mono); font-size:12.5px; color:rgba(255,255,255,0.55); letter-spacing:.05em; }
.brand-spotlight-copy{ background:#fff; padding:52px; display:flex; flex-direction:column; justify-content:center; }

/* --- Utility --- */
.mono{ font-family: var(--font-mono); }
.center{ text-align:center; }
.split{ display:grid; grid-template-columns:1fr 1fr; gap:56px; align-items:center; }

/* --- Social Media Icons --- */
.social-links{
  display:flex; gap:12px; align-items:center; flex-wrap:wrap;
}
.social-links a{
  display:inline-flex; align-items:center; justify-content:center;
  width:44px; height:44px; border-radius:50%;
  background:var(--paper-dim); color:var(--ink-soft);
  border:1px solid var(--line);
  transition:all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  text-decoration:none;
}
.social-links a:hover,
.social-links a:focus{
  background:var(--gradient-brand);
  color:#fff;
  border-color:transparent;
  transform:translateY(-3px);
  box-shadow:var(--shadow-md);
}
.social-links a:focus-visible{
  outline:2px solid var(--magenta);
  outline-offset:2px;
}
.social-links svg{ width:20px; height:20px; }

/* --- Footer Social --- */
.foot-social{
  margin-top:16px;
}
.foot-social .social-links a{
  background:rgba(255,255,255,0.08);
  border-color:rgba(255,255,255,0.12);
  color:rgba(255,255,255,0.7);
}
.foot-social .social-links a:hover,
.foot-social .social-links a:focus{
  background:var(--gradient-brand);
  color:#fff;
  border-color:transparent;
}

/* --- Enhanced Reveal Animations --- */
.reveal{
  opacity:0;
  transform:translateY(24px);
  transition:opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1),
            transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}
.reveal.is-visible{
  opacity:1;
  transform:translateY(0);
}

/* Staggered reveal for children */
.reveal-group .reveal:nth-child(1){ transition-delay:0ms; }
.reveal-group .reveal:nth-child(2){ transition-delay:100ms; }
.reveal-group .reveal:nth-child(3){ transition-delay:200ms; }
.reveal-group .reveal:nth-child(4){ transition-delay:300ms; }
.reveal-group .reveal:nth-child(5){ transition-delay:400ms; }
.reveal-group .reveal:nth-child(6){ transition-delay:500ms; }

/* Reduced motion support */
@media (prefers-reduced-motion: reduce){
  .reveal,
  .reveal *,
  .btn,
  .social-links a,
  .service-node,
  .card,
  .stat{
    transition:none !important;
    animation:none !important;
  }
  .reveal{ opacity:1; transform:none; }
}

/* --- Enhanced Cards --- */
.card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:32px;
  transition:transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}
.card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-lg);
  border-color:var(--magenta);
}
.card:focus-within{
  outline:2px solid var(--magenta);
  outline-offset:2px;
}

/* --- Service Node Enhancements --- */
.service-node{
  position:relative;
}
.service-node::before{
  content:'';
  position:absolute;
  left:-28px;
  top:0;
  bottom:0;
  width:2px;
  background:var(--line);
  z-index:0;
}
.service-node:last-child::before{ display:none; }
.service-node-marker{
  position:relative;
  z-index:1;
  width:48px; height:48px;
  border-radius:50%;
  background:var(--gradient-brand);
  color:#fff;
  display:flex; align-items:center; justify-content:center;
  font-family:var(--font-mono);
  font-weight:600;
  font-size:14px;
  box-shadow:var(--shadow-sm);
  flex-shrink:0;
}
.service-node-body{ position:relative; z-index:1; }

/* --- Hero Enhancements --- */
.hero{
  position:relative;
}
.hero::after{
  content:'';
  position:absolute;
  inset:0;
  background:
    radial-gradient(ellipse at 20% 0%, rgba(196,24,142,0.08), transparent 50%),
    radial-gradient(ellipse at 80% 100%, rgba(59,42,156,0.08), transparent 50%);
  pointer-events:none;
  z-index:0;
}
.hero .wrap{ position:relative; z-index:1; }

/* --- Stat Row Enhancements --- */
.stat{ position:relative; }
.stat::before{
  content:'';
  position:absolute;
  left:-10px;
  top:50%;
  transform:translateY(-50%);
  width:8px; height:8px;
  border-radius:50%;
  background:var(--gradient-brand);
  opacity:0;
  transition:opacity 0.3s ease;
}
.stat:hover::before{ opacity:1; }

/* --- Focus Styles for Accessibility --- */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible{
  outline:2px solid var(--magenta);
  outline-offset:2px;
}

/* --- Skip Link --- */
.skip-link{
  position:absolute;
  top:-100%;
  left:50%;
  transform:translateX(-50%);
  background:var(--indigo-deep);
  color:#fff;
  padding:12px 24px;
  border-radius:var(--radius-sm);
  font-weight:600;
  z-index:10000;
  transition:top 0.3s ease;
}
.skip-link:focus{ top:16px; }

/* --- Form Enhancements --- */
.form-group input,
.form-group textarea,
.form-group select{
  transition:border-color 0.2s ease, box-shadow 0.2s ease;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus{
  box-shadow:0 0 0 3px rgba(196,24,142,0.15);
}

/* --- Section Spacing --- */
section{ padding:96px 0; }
.section-dim{ background:var(--paper-dim); }
.section-dark{ background:var(--indigo-deep); color:#fff; }
.section-dark .eyebrow{ color:var(--magenta-light); }
.section-dark p{ color:rgba(255,255,255,0.68); }
.section-dark h1,
.section-dark h2,
.section-dark h3{ color:#fff; }

/* --- Back to Top Button --- */
.back-to-top{
  position:fixed;
  bottom:24px;
  right:24px;
  width:48px;
  height:48px;
  border-radius:50%;
  background:var(--gradient-brand);
  color:#fff;
  border:none;
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:center;
  box-shadow:var(--shadow-lg);
  opacity:0;
  visibility:hidden;
  transform:translateY(16px);
  transition:all 0.3s ease;
  z-index:1000;
}
.back-to-top.visible{
  opacity:1;
  visibility:visible;
  transform:translateY(0);
}
.back-to-top:hover{
  transform:translateY(-4px);
  box-shadow:0 12px 32px rgba(196,24,142,0.4);
}
.back-to-top svg{ width:24px; height:24px; }

/* --- Loading State --- */
.btn.loading{
  position:relative;
  color:transparent !important;
  pointer-events:none;
}
.btn.loading::after{
  content:'';
  position:absolute;
  width:20px;
  height:20px;
  border:2px solid #fff;
  border-right-color:transparent;
  border-radius:50%;
  animation:spin 0.7s linear infinite;
}
@keyframes spin{ to{ transform:rotate(360deg); } }

/* --- Legal / policy pages --- */
.legal-body{ max-width:760px; }
.legal-body h2{ font-size:20px; margin:36px 0 12px; }
.legal-body h2:first-child{ margin-top:0; }
.legal-body p, .legal-body li{ color:var(--ink-soft); font-size:14.5px; line-height:1.75; }
.legal-body ul{ margin:10px 0 10px 20px; }
.legal-updated{ color:var(--ink-soft); font-size:13px; margin-bottom:8px; font-family:var(--font-mono); }
.legal-flag{
  background: var(--paper-dim); border:1px solid var(--line); border-radius:var(--radius-sm);
  padding:14px 18px; font-size:13.5px; color:var(--ink-soft); margin-bottom:28px;
}

@media (max-width: 900px){
  .hero-grid{ grid-template-columns:1fr; }
  .foot-grid{ grid-template-columns:1fr 1fr; }
  .stat-row{ grid-template-columns:1fr 1fr; }
  .split{ grid-template-columns:1fr; }
  .brand-spotlight{ grid-template-columns:1fr; }
  section{ padding:72px 0; }
  .service-node::before{ left:22px; top:24px; bottom:auto; width:auto; height:2px; }
}
@media (max-width: 720px){
  nav.links{
    display:none; position:absolute; top:100%; left:0; right:0; flex-direction:column;
    align-items:flex-start; gap:0; background:var(--paper); border-bottom:1px solid var(--line);
    box-shadow:var(--shadow-md); padding:8px 32px;
  }
  nav.links.open{ display:flex; }
  nav.links a{ width:100%; padding:14px 0; border-bottom:1px solid var(--line); }
  .menu-toggle{ display:flex; }
  .nav-inner{ position:relative; }
  .foot-grid{ grid-template-columns:1fr; gap:32px; }
  .cap-list{ grid-template-columns:1fr; }
  .cta-band{ padding:44px 26px; }
  .wrap{ padding:0 20px; }
  .stat-row{ grid-template-columns:1fr; }
  .stat::before{ display:none; }
  .service-node::before{ display:none; }
  .back-to-top{ bottom:16px; right:16px; width:44px; height:44px; }
}

/* --- Print Styles --- */
@media print{
  .menu-toggle,
  .btn,
  .social-links,
  .back-to-top,
  header,
  footer{ display:none !important; }
  body{ background:#fff; color:#000; }
  a{ text-decoration:none; color:#000; }
  section{ padding:0; page-break-inside:avoid; }
}