:root {
  --brand-indigo: #1E1B4B;
  --accent-violet: #7C3AED;
  --bg: #F8FAFC;
  --bg-alt: #F1F5F9;
  --surface: rgba(255, 255, 255, 0.85);
  --surface-solid: #FFFFFF;
  --ink: #0F172A;
  --ink-soft: #475569;
  --line: rgba(30, 27, 75, 0.1);
  --line-strong: rgba(30, 27, 75, 0.2);
  --gradient: linear-gradient(135deg, var(--brand-indigo), var(--accent-violet));
  --radius: 1rem;
  --radius-lg: 1.5rem;
  --shadow: 0 10px 30px -10px rgba(30, 27, 75, 0.1);
  --transition: 0.3s ease-out;
  --font-heading: 'Poppins', 'Inter', system-ui, -apple-system, sans-serif;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2rem;
  --space-6: 3rem;
  --space-8: 4rem;
  --space-10: 5rem;
}

:root[data-theme="dark"] {
  --bg: #0F172A;
  --bg-alt: #1E293B;
  --surface: rgba(30, 41, 59, 0.85);
  --surface-solid: #1E293B;
  --ink: #F8FAFC;
  --ink-soft: #94A3B8;
  --line: rgba(255, 255, 255, 0.1);
  --line-strong: rgba(255, 255, 255, 0.2);
  --shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
}

:root[data-theme="dark"] .blob {
  opacity: 0.25;
  filter: blur(60px) brightness(1.2);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 6rem; }
body {
  margin: 0;
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
  font-weight: 400;
}
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin: 0 0 var(--space-2);
}
p { margin: 0 0 var(--space-2); }
a { color: inherit; text-decoration: none; }
button, input, textarea { font: inherit; }
:focus-visible { outline: 3px solid var(--accent-violet); outline-offset: 3px; }

.no-scroll { overflow: hidden; }

.skip-link { position: absolute; left: 1rem; top: -3rem; padding: 0.75rem 1rem; background: var(--surface-solid); border-radius: 999px; z-index: 100; border: 1px solid var(--line-strong); }
.skip-link:focus { top: 1rem; }

.container { width: min(1120px, calc(100% - 2rem)); margin-inline: auto; }
.section { padding: var(--space-10) 0; position: relative; }
.section-alt { background: var(--bg-alt); }
.section-dark {
  background: var(--brand-indigo);
  color: #fff;
  position: relative;
  overflow: hidden;
}
.section-dark p { color: rgba(255,255,255,0.85); }

.eyebrow {
  margin-bottom: var(--space-2);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  font-weight: 700;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  white-space: nowrap;
}
.section-dark .eyebrow {
  background: linear-gradient(135deg, #C4B5FD, #A78BFA);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: 0.85rem 1.5rem;
  border-radius: 999px;
  font-weight: 700;
  border: 1px solid transparent;
  transition: transform var(--transition), filter var(--transition);
}
.button:hover { transform: translateY(-2px); }
.button-primary { background: var(--gradient); color: #fff; box-shadow: var(--shadow); }
.button-secondary { background: transparent; border-color: var(--line-strong); color: var(--ink); }
.section-dark .button-secondary { color: #fff; border-color: rgba(255,255,255,0.3); }
.text-link { color: var(--accent-violet); font-weight: 700; display: inline-flex; gap: 0.3rem; }
.text-link::after { content: "→"; }

.site-header { position: sticky; top: 0; z-index: 50; padding: 1rem 0; }
.header-shell {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: var(--surface);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow);
}
.logo { display: inline-flex; gap: 0.75rem; align-items: center; }
.logo-mark { width: 2.2rem; height: 2.2rem; border-radius: 0.6rem; background: var(--gradient); position: relative; }
.logo-mark::after { content: ""; position: absolute; inset: 0.5rem; border: 1px solid rgba(255,255,255,0.5); border-radius: 0.3rem; }
.logo-text { display: flex; flex-direction: column; line-height: 1.2; white-space: nowrap; }
.logo-text strong { font-size: 1rem; }
.logo-text span:last-child { font-size: 0.75rem; color: var(--ink-soft); }

.site-nav { display: flex; justify-content: center; gap: 0.5rem; flex-wrap: wrap; }
.site-nav a { padding: 0.6rem 1rem; border-radius: 999px; font-weight: 600; color: var(--ink-soft); }
.site-nav a:hover, .site-nav a.is-current { background: rgba(124, 58, 237, 0.1); color: var(--ink); }
.header-actions { display: flex; gap: 0.5rem; }
.theme-toggle, .nav-toggle {
  display: inline-flex; align-items: center; gap: 0.4rem; min-height: 3rem; padding: 0 1rem;
  border-radius: 999px; border: 1px solid var(--line-strong); background: var(--surface-solid); color: var(--ink);
  transition: transform var(--transition);
}
.theme-toggle:hover, .nav-toggle:hover { transform: translateY(-2px); }
.nav-toggle { display: none; }
.mobile-nav-cta { display: none; }

.decor { position: absolute; inset: 0; z-index: 0; pointer-events: none; overflow: hidden; }
.blob { position: absolute; border-radius: 50%; filter: blur(60px); opacity: 0.4; }
.blob-1 { width: 400px; height: 400px; background: var(--accent-violet); top: -100px; right: -100px; }
.blob-2 { width: 300px; height: 300px; background: #312E81; bottom: -50px; left: -50px; }
.content-layer { position: relative; z-index: 1; }

.hero { padding: 4rem 0 6rem; }
.hero-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center; }
.hero h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
.hero-lead { font-size: 1.15rem; color: var(--ink-soft); max-width: 34rem; }
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; margin-top: 1.5rem; }
.hero-highlights { list-style: none; padding: 0; margin: 2rem 0 0; display: grid; gap: 0.75rem; }
.hero-highlights li { position: relative; padding-left: 1.5rem; color: var(--ink-soft); }
.hero-highlights li::before { content: ""; position: absolute; left: 0; top: 0.6rem; width: 0.5rem; height: 0.5rem; border-radius: 999px; background: var(--gradient); }

.hero-board {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 1.5rem; box-shadow: var(--shadow); display: grid; gap: 1rem;
}
.hero-board__row--pills { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.signal-pill { padding: 0.4rem 0.8rem; border-radius: 999px; background: rgba(124, 58, 237, 0.1); font-size: 0.8rem; font-weight: 700; letter-spacing: 0.05em; }
.hero-board__row--main { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.board-card { background: var(--bg-alt); padding: 1rem; border-radius: var(--radius); border: 1px solid var(--line); }
.board-card strong { display: block; margin: 0.5rem 0; }
.micro-label { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--ink-soft); font-weight: 700; }
.hero-board__diagram { display: grid; grid-template-columns: repeat(5, minmax(60px, 1fr)); gap: 0.5rem; overflow-x: auto; padding-bottom: 0.5rem; }
.node { text-align: center; padding: 0.6rem; border-radius: 0.5rem; background: var(--brand-indigo); color: #fff; font-size: 0.8rem; font-weight: 700; }

.section-heading { max-width: 40rem; margin-bottom: 3rem; }
.section-heading h2 { font-size: clamp(2rem, 3vw, 2.5rem); }

.capability-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 1.5rem; }
.capability-block {
  grid-column: span 4; padding: 2rem; border-radius: var(--radius-lg);
  border: 1px solid var(--line); background: var(--surface); box-shadow: var(--shadow);
  display: flex; flex-direction: column; gap: 1rem; transition: transform var(--transition);
}
.capability-block:hover { transform: translateY(-4px); }
.capability-block--wide { grid-column: span 8; }
.capability-block--tall { grid-column: span 4; }
.capability-index { display: inline-flex; width: fit-content; padding: 0.3rem 0.7rem; border-radius: 999px; background: rgba(124, 58, 237, 0.1); color: var(--accent-violet); font-weight: 800; font-size: 0.8rem; letter-spacing: 0.05em; }

.metric-strip { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }
.metric-card { padding: 2rem; border-radius: var(--radius); border: 1px solid var(--line); background: var(--surface); text-align: center; }
.metric-value { display: block; font-size: 2.5rem; font-weight: 800; letter-spacing: -0.02em; margin-top: 0.5rem; }
.metric-label { color: var(--ink-soft); font-weight: 700; font-size: 0.9rem; }

.case-list { display: grid; gap: 1.5rem; }
.case-strip {
  display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; align-items: center;
  padding: 2rem; border-radius: var(--radius-lg); border: 1px solid var(--line); background: var(--surface); box-shadow: var(--shadow);
}
.case-strip--alt .case-content { order: 2; }
.case-visual { min-height: 16rem; border-radius: var(--radius); background: var(--gradient); opacity: 0.9; overflow: hidden; display: flex; }
.case-visual svg { width: 100%; height: 100%; display: block; }

.cta-band { padding-bottom: 5rem; }
.cta-band__inner {
  display: grid; grid-template-columns: 1fr auto; gap: 2rem; align-items: center;
  padding: 3rem; border-radius: var(--radius-lg); background: var(--brand-indigo); color: #fff;
}
.cta-band__inner p { color: rgba(255,255,255,0.85); margin: 0; }
.cta-band__actions { display: flex; gap: 1rem; }

.service-stack { display: grid; gap: 1.5rem; }
.service-detail {
  display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; padding: 2rem;
  border-radius: var(--radius-lg); border: 1px solid var(--line); background: var(--surface); box-shadow: var(--shadow);
}
.info-card { background: var(--bg-alt); padding: 1.5rem; border-radius: var(--radius); border: 1px solid var(--line); }

.filter-row { display: flex; gap: 0.5rem; margin-bottom: 2rem; flex-wrap: wrap; }
.filter-chip { padding: 0.6rem 1.2rem; border-radius: 999px; border: 1px solid var(--line-strong); background: var(--surface); font-weight: 700; cursor: pointer; }
.filter-chip.is-active { background: var(--gradient); color: #fff; border-color: transparent; }
.project-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
.project-card { border-radius: var(--radius-lg); border: 1px solid var(--line); background: var(--surface); overflow: hidden; box-shadow: var(--shadow); display: flex; flex-direction: column; }
.project-card__visual { min-height: 14rem; background: var(--gradient); opacity: 0.9; overflow: hidden; display: flex; }
.project-card__visual svg { width: 100%; height: 100%; display: block; }
.project-card__body { padding: 1.5rem; }

.principle-grid, .insight-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
.mini-panel, .insight-card { padding: 2rem; border-radius: var(--radius-lg); border: 1px solid var(--line); background: var(--surface); box-shadow: var(--shadow); }

.svg-signature {
  padding: 2.5rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: var(--surface);
  box-shadow: var(--shadow);
  display: flex;
  justify-content: center;
  align-items: center;
  overflow-x: auto;
}
.svg-signature svg {
  max-width: 100%;
  height: auto;
}

.contact-grid { display: grid; grid-template-columns: 1fr; max-width: 800px; margin-inline: auto; }
.contact-panel { padding: 2.5rem; border-radius: var(--radius-lg); border: 1px solid var(--line); background: var(--surface); box-shadow: var(--shadow); }
.contact-form { display: grid; gap: 1.5rem; }
.form-banner { padding: 1rem; border-radius: var(--radius); background: rgba(124, 58, 237, 0.1); font-size: 0.9rem; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
.form-field { display: grid; gap: 0.5rem; }
.form-field--full { grid-column: 1 / -1; }
.form-field label { font-weight: 700; }
.form-field input, .form-field textarea {
  padding: 0.8rem 1rem; border-radius: 0.75rem; border: 1px solid var(--line-strong);
  background: var(--surface-solid); color: var(--ink); width: 100%;
}
.form-field input[aria-invalid="true"] { border-color: #DC2626; }
.field-error { color: #DC2626; font-size: 0.85rem; margin: 0; min-height: 1rem; }
.form-status { font-weight: 600; min-height: 1.5rem; }
.form-status[data-state="success"] { color: #059669; }

.site-footer { padding: 3rem 0; border-top: 1px solid var(--line); background: var(--bg-alt); }
.footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: var(--space-4); }
.footer-copy { color: var(--ink-soft); }

.toast-stack { position: fixed; bottom: 1rem; right: 1rem; z-index: 80; display: grid; gap: 0.5rem; }
.toast { padding: 1rem; border-radius: var(--radius); background: var(--surface-solid); border: 1px solid var(--line-strong); box-shadow: var(--shadow); opacity: 0; transform: translateY(10px); transition: all var(--transition); }
.toast.is-visible { opacity: 1; transform: translateY(0); }

.reveal { opacity: 0; transform: translateY(20px); transition: opacity 0.5s ease-out, transform 0.5s ease-out; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

[hidden] { display: none !important; }

@media (max-width: 980px) {
  .nav-toggle { display: inline-flex; }
  .site-nav {
    position: absolute; top: calc(100% + 0.5rem); left: 0; right: 0; flex-direction: column;
    padding: 1rem; border-radius: var(--radius-lg); border: 1px solid var(--line);
    background: var(--surface-solid); box-shadow: var(--shadow); opacity: 0; visibility: hidden; transform: translateY(-10px);
  }
  .site-nav[data-open="true"] { opacity: 1; visibility: visible; transform: translateY(0); }
  .mobile-nav-cta { display: inline-flex; margin-top: 0.5rem; }
  .desktop-nav-cta { display: none; }
  .header-shell { grid-template-columns: auto auto auto; position: relative; }
  .hero-grid, .case-strip, .service-detail, .cta-band__inner { grid-template-columns: 1fr; }
  .case-strip--alt .case-content { order: 0; }
  .form-grid { grid-template-columns: 1fr; }
}

@media (min-width: 600px) and (max-width: 980px) {
  .capability-grid, .metric-strip, .project-grid, .principle-grid, .insight-grid { grid-template-columns: repeat(2, 1fr); }
  .capability-block, .capability-block--wide, .capability-block--tall { grid-column: span 1; }
}

@media (max-width: 599px) {
  .capability-grid, .metric-strip, .project-grid, .principle-grid, .insight-grid { grid-template-columns: 1fr; }
  .capability-block, .capability-block--wide, .capability-block--tall { grid-column: span 1; }
}

@media (max-width: 560px) {
  .section { padding: var(--space-6) 0; }
  .hero h1 { font-size: 2.2rem; }
  .button { width: 100%; }
  .cta-band__actions .button { width: auto; }
  .footer-grid { grid-template-columns: 1fr; }
  .capability-block, .case-strip, .service-detail, .contact-panel, .mini-panel, .insight-card, .hero-board, .svg-signature { padding: 1.25rem; }
  .case-visual { min-height: 12rem; }
  .project-card__visual { min-height: 10rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
  .reveal { opacity: 1; transform: none; }
}