/* =============================================================
   PACKETWISE.TECH — Main Stylesheet
   Brand: Navy #0A192F | Teal #14B8A6 | Orange #F59E0B | White #FFFFFF
   ============================================================= */

/* ---- Reset & Custom Properties ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --navy:     #0A192F;
  --navy-mid: #0d2240;
  --navy-lt:  #112d4e;
  --teal:     #14B8A6;
  --teal-lt:  #2dd4bf;
  --teal-dk:  #0f9284;
  --orange:   #F59E0B;
  --white:    #FFFFFF;
  --gray-50:  #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-400: #94a3b8;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-900: #0f172a;
  --text-on-dark: #c8d6e8;

  --font-sans: system-ui, -apple-system, 'Segoe UI', Roboto, Arial, sans-serif;
  --font-mono: 'SFMono-Regular', Consolas, 'Liberation Mono', monospace;

  --radius-sm:  4px;
  --radius-md:  8px;
  --radius-lg:  12px;
  --radius-xl:  20px;

  --shadow-sm:  0 1px 3px rgba(0,0,0,.12), 0 1px 2px rgba(0,0,0,.08);
  --shadow-md:  0 4px 16px rgba(0,0,0,.18);
  --shadow-lg:  0 8px 32px rgba(0,0,0,.24);
  --shadow-teal: 0 0 0 3px rgba(20,184,166,.35);

  --max-w: 1180px;
  --section-py: 5rem;
  --nav-h: 72px;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

body {
  font-family: var(--font-sans);
  color: var(--gray-900);
  background: var(--white);
  line-height: 1.65;
  overflow-x: hidden;
}

/* ---- Typography ---- */
h1,h2,h3,h4,h5,h6 { line-height: 1.25; font-weight: 700; letter-spacing: -.02em; }
h1 { font-size: clamp(2rem, 5vw, 3.25rem); }
h2 { font-size: clamp(1.5rem, 3.5vw, 2.25rem); }
h3 { font-size: clamp(1.125rem, 2.5vw, 1.5rem); }
h4 { font-size: 1.125rem; }
p  { max-width: 68ch; }
a  { color: var(--teal); text-decoration: none; }
a:hover { text-decoration: underline; }
a:focus-visible { outline: 2px solid var(--teal); outline-offset: 3px; border-radius: 2px; }
ul,ol { padding-left: 1.25rem; }
li { margin-bottom: .4rem; }

/* ---- Layout ---- */
.container { width: 100%; max-width: var(--max-w); margin-inline: auto; padding-inline: 1.5rem; }
.section { padding-block: var(--section-py); }
.section--dark { background: var(--navy); color: var(--text-on-dark); }
.section--dark h2, .section--dark h3, .section--dark h4 { color: var(--white); }
.section--mid  { background: var(--navy-mid); color: var(--text-on-dark); }
.section--mid h2, .section--mid h3, .section--mid h4 { color: var(--white); }
.section--gray { background: var(--gray-50); }
.section--white { background: var(--white); }

.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%,420px),1fr)); gap: 2rem; align-items: start; }
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%,300px),1fr)); gap: 2rem; align-items: start; }
.grid-4 { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%,220px),1fr)); gap: 1.5rem; align-items: start; }
.flex    { display: flex; }
.flex-col { flex-direction: column; }
.gap-sm   { gap: .75rem; }
.gap-md   { gap: 1.5rem; }
.mt-sm    { margin-top: 1rem; }
.mt-md    { margin-top: 2rem; }
.mt-lg    { margin-top: 3rem; }
.text-center { text-align: center; }
.text-center p { margin-inline: auto; }

/* ---- Eyebrow label ---- */
.eyebrow {
  display: inline-block;
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: .75rem;
}
.eyebrow--orange { color: var(--orange); }

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .75rem 1.75rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: .95rem;
  cursor: pointer;
  border: 2px solid transparent;
  transition: background .18s, color .18s, border-color .18s, box-shadow .18s, transform .12s;
  text-decoration: none;
  line-height: 1.3;
}
.btn:hover { transform: translateY(-1px); text-decoration: none; }
.btn:active { transform: translateY(0); }
.btn:focus-visible { outline: 2px solid var(--teal); outline-offset: 3px; }

.btn-primary {
  background: var(--teal);
  color: var(--navy);
  border-color: var(--teal);
}
.btn-primary:hover { background: var(--teal-lt); border-color: var(--teal-lt); color: var(--navy); }

.btn-outline {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,.45);
}
.btn-outline:hover { border-color: var(--white); background: rgba(255,255,255,.08); color: var(--white); }

.btn-outline-teal {
  background: transparent;
  color: var(--teal);
  border-color: var(--teal);
}
.btn-outline-teal:hover { background: rgba(20,184,166,.1); }

.btn-ghost {
  background: transparent;
  color: var(--teal);
  border-color: transparent;
  padding-left: 0;
}
.btn-ghost:hover { color: var(--teal-lt); }
.btn-ghost::after { content: ' →'; }

.cta-group { display: flex; gap: 1rem; flex-wrap: wrap; align-items: center; }

/* ---- Navigation ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(10,25,47,.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(20,184,166,.15);
  height: var(--nav-h);
  display: flex;
  align-items: center;
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  width: 100%;
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: 1.5rem;
}
.nav-logo { display: flex; align-items: center; flex-shrink: 0; }
.nav-logo img { height: 38px; width: auto; }
.nav-logo:hover { opacity: .88; }
.nav-logo:focus-visible { outline: 2px solid var(--teal); outline-offset: 4px; border-radius: 4px; }

.nav-links {
  display: flex;
  align-items: center;
  gap: .25rem;
  list-style: none;
  padding: 0;
  margin: 0;
}
.nav-links a {
  color: var(--text-on-dark);
  font-size: .9rem;
  font-weight: 500;
  padding: .45rem .75rem;
  border-radius: var(--radius-sm);
  transition: color .15s, background .15s;
  display: block;
  white-space: nowrap;
}
.nav-links a:hover, .nav-links a[aria-current="page"] {
  color: var(--teal);
  background: rgba(20,184,166,.08);
  text-decoration: none;
}
.nav-links a[aria-current="page"] { color: var(--teal); }

.nav-cta-btn {
  flex-shrink: 0;
  padding: .55rem 1.25rem;
  font-size: .88rem;
}

/* Mobile nav */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--white);
  padding: .5rem;
  border-radius: var(--radius-sm);
  line-height: 1;
}
.nav-toggle:focus-visible { outline: 2px solid var(--teal); outline-offset: 3px; }
.hamburger-icon { display: block; width: 24px; height: 2px; background: currentColor; position: relative; }
.hamburger-icon::before, .hamburger-icon::after {
  content: '';
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: currentColor;
  transition: transform .2s;
}
.hamburger-icon::before { top: -7px; }
.hamburger-icon::after  { top:  7px; }
[aria-expanded="true"] .hamburger-icon { background: transparent; }
[aria-expanded="true"] .hamburger-icon::before { transform: rotate(45deg) translate(5px,5px); }
[aria-expanded="true"] .hamburger-icon::after  { transform: rotate(-45deg) translate(5px,-5px); }

@media (max-width: 860px) {
  .nav-toggle { display: flex; align-items: center; justify-content: center; }
  .nav-links, .nav-cta-btn {
    display: none;
    position: absolute;
    top: var(--nav-h);
    left: 0;
    width: 100%;
    background: var(--navy);
    border-bottom: 1px solid rgba(20,184,166,.2);
    padding: 1rem 1.5rem;
    flex-direction: column;
    align-items: flex-start;
  }
  .nav-links { gap: .25rem; }
  .nav-links a { font-size: 1rem; padding: .65rem .5rem; }
  .nav-links.open, .nav-cta-btn.open { display: flex; }
  .nav-cta-btn {
    position: static;
    width: auto;
    margin: .5rem .5rem 1rem;
    align-self: flex-start;
  }
  .nav-cta-btn.open { display: inline-flex; }
}

/* ---- Hero ---- */
.hero {
  background: var(--navy);
  color: var(--white);
  min-height: 90vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-block: 5rem;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 70% 50%, rgba(20,184,166,.08) 0%, transparent 60%),
    radial-gradient(ellipse 40% 40% at 20% 80%, rgba(245,158,11,.05) 0%, transparent 55%);
  pointer-events: none;
}
.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}
@media (max-width: 768px) { .hero-inner { grid-template-columns: 1fr; } }
.hero-content { position: relative; }
.hero-title { color: var(--white); margin-bottom: 1.25rem; }
.hero-title span { color: var(--teal); }
.hero-lead {
  color: var(--text-on-dark);
  font-size: 1.1rem;
  line-height: 1.75;
  margin-bottom: 2rem;
  max-width: 56ch;
}
.hero-visual { position: relative; display: flex; align-items: center; justify-content: center; }

/* ---- Page hero (inner pages) ---- */
.page-hero {
  background: var(--navy);
  color: var(--white);
  padding-block: 4.5rem 3.5rem;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 50% 70% at 80% 50%, rgba(20,184,166,.07) 0%, transparent 65%);
  pointer-events: none;
}
.page-hero h1 { color: var(--white); margin-bottom: 1rem; max-width: 20ch; }
.page-hero .lead { color: var(--text-on-dark); font-size: 1.1rem; max-width: 60ch; margin-bottom: 1.75rem; }

/* ---- Network SVG diagram ---- */
.network-diagram {
  width: 100%;
  max-width: 480px;
  margin: 0 auto;
}

/* ---- Cards ---- */
.card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  transition: box-shadow .2s, transform .2s;
}
.card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.card--dark {
  background: var(--navy-lt);
  border-color: rgba(20,184,166,.18);
  color: var(--text-on-dark);
}
.card--dark h3, .card--dark h4 { color: var(--white); }
.card-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: rgba(20,184,166,.12);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  color: var(--teal);
  flex-shrink: 0;
}
.card--dark .card-icon { background: rgba(20,184,166,.15); }
.card h3, .card h4 { margin-bottom: .6rem; }
.card p { margin-bottom: .75rem; font-size: .95rem; }
.card ul { font-size: .9rem; color: var(--gray-600); }
.card--dark ul { color: var(--text-on-dark); }

/* ---- Capability list ---- */
.capability-list { list-style: none; padding: 0; }
.capability-list li {
  display: flex;
  gap: .75rem;
  align-items: flex-start;
  padding: .6rem 0;
  border-bottom: 1px solid rgba(20,184,166,.12);
  font-size: .95rem;
}
.capability-list li:last-child { border-bottom: none; }
.capability-list li::before {
  content: '';
  flex-shrink: 0;
  width: 6px;
  height: 6px;
  background: var(--teal);
  border-radius: 50%;
  margin-top: .55rem;
}

/* ---- Section header ---- */
.section-header { margin-bottom: 3rem; }
.section-header h2 { margin-bottom: .75rem; }
.section-header p { color: var(--gray-600); font-size: 1.05rem; }
.section--dark .section-header p,
.section--mid .section-header p { color: var(--text-on-dark); }

/* ---- Process steps ---- */
.process-steps {
  counter-reset: step;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%,180px),1fr));
  gap: 1.5rem;
  position: relative;
}
.step {
  counter-increment: step;
  position: relative;
  padding: 1.5rem;
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(20,184,166,.2);
  border-radius: var(--radius-lg);
  text-align: center;
}
.step::before {
  content: counter(step, decimal-leading-zero);
  display: block;
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--teal);
  margin-bottom: .75rem;
  font-variant-numeric: tabular-nums;
}
.step h4 { color: var(--white); margin-bottom: .5rem; font-size: 1rem; }
.step p { font-size: .88rem; color: var(--text-on-dark); margin: 0; }

/* ---- Architecture diagram (layered) ---- */
.arch-diagram {
  display: flex;
  flex-direction: column;
  gap: .75rem;
}
.arch-layer {
  border: 1px solid rgba(20,184,166,.25);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  background: rgba(255,255,255,.03);
  position: relative;
}
.arch-layer__label {
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--orange);
  margin-bottom: .5rem;
}
.arch-layer__title { font-size: 1rem; font-weight: 600; color: var(--white); margin-bottom: .6rem; }
.arch-layer__items {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
}
.arch-tag {
  background: rgba(20,184,166,.1);
  border: 1px solid rgba(20,184,166,.25);
  border-radius: 4px;
  padding: .2rem .65rem;
  font-size: .78rem;
  color: var(--teal-lt);
  white-space: nowrap;
}
.arch-arrow {
  text-align: center;
  color: var(--teal);
  font-size: 1.2rem;
  line-height: 1;
  opacity: .7;
}

/* ---- Evidence table ---- */
.evidence-table {
  width: 100%;
  border-collapse: collapse;
  font-size: .9rem;
}
.evidence-table th, .evidence-table td {
  padding: .85rem 1rem;
  text-align: left;
  border-bottom: 1px solid rgba(20,184,166,.15);
}
.evidence-table th {
  color: var(--teal);
  font-weight: 700;
  font-size: .78rem;
  letter-spacing: .07em;
  text-transform: uppercase;
  background: rgba(20,184,166,.06);
}
.evidence-table td { color: var(--text-on-dark); }
.evidence-table tr:last-child td { border-bottom: none; }

/* ---- Use-case cards ---- */
.usecase-card {
  border: 1px solid rgba(20,184,166,.2);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  background: rgba(255,255,255,.03);
  transition: border-color .2s, background .2s;
}
.usecase-card:hover { border-color: var(--teal); background: rgba(20,184,166,.05); }
.usecase-label {
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--orange);
  margin-bottom: .5rem;
  display: block;
}
.usecase-card h3 { color: var(--white); margin-bottom: .5rem; font-size: 1.1rem; }
.usecase-card .question { font-style: italic; color: var(--teal-lt); margin-bottom: .75rem; font-size: .9rem; }
.usecase-card ul { color: var(--text-on-dark); font-size: .9rem; }

/* ---- FAQ Accordion ---- */
.accordion { border: 1px solid rgba(20,184,166,.2); border-radius: var(--radius-lg); overflow: hidden; }
.accordion-item { border-bottom: 1px solid rgba(20,184,166,.15); }
.accordion-item:last-child { border-bottom: none; }
.accordion-btn {
  width: 100%;
  background: none;
  border: none;
  color: var(--white);
  font-size: 1rem;
  font-weight: 600;
  text-align: left;
  padding: 1.25rem 1.5rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  transition: background .15s;
}
.accordion-btn:hover { background: rgba(20,184,166,.05); }
.accordion-btn:focus-visible { outline: 2px solid var(--teal); outline-offset: -2px; }
.accordion-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  color: var(--teal);
  transition: transform .2s;
}
.accordion-btn[aria-expanded="true"] .accordion-icon { transform: rotate(45deg); }
.accordion-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height .3s ease;
}
.accordion-panel-inner { padding: 0 1.5rem 1.25rem; color: var(--text-on-dark); font-size: .95rem; }

/* ---- Contact form ---- */
.contact-form { max-width: 680px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; }
@media (max-width: 540px) { .form-grid { grid-template-columns: 1fr; } }
.form-group { display: flex; flex-direction: column; gap: .4rem; }
.form-group.full { grid-column: 1 / -1; }
label {
  font-size: .85rem;
  font-weight: 600;
  color: var(--gray-700);
}
.section--dark label, .section--mid label { color: var(--text-on-dark); }
input, textarea, select {
  padding: .7rem .9rem;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: .95rem;
  color: var(--gray-900);
  background: var(--white);
  transition: border-color .15s, box-shadow .15s;
  -webkit-appearance: none;
  appearance: none;
}
.section--dark input, .section--dark textarea, .section--dark select,
.section--mid input, .section--mid textarea, .section--mid select {
  background: rgba(255,255,255,.07);
  border-color: rgba(20,184,166,.3);
  color: var(--white);
}
.section--dark input::placeholder, .section--dark textarea::placeholder { color: var(--gray-400); }
input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--teal);
  box-shadow: var(--shadow-teal);
}
textarea { resize: vertical; min-height: 130px; }
select { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2394a3b8' d='M6 8L1 3h10z'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right .9rem center; padding-right: 2.5rem; cursor: pointer; }
.section--dark select { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2314B8A6' d='M6 8L1 3h10z'/%3E%3C/svg%3E"); }
.section--dark select option { background: var(--navy-lt); color: var(--white); }

.form-notice {
  font-size: .82rem;
  color: var(--gray-400);
  margin-top: .5rem;
  padding: .75rem 1rem;
  background: rgba(245,158,11,.08);
  border: 1px solid rgba(245,158,11,.2);
  border-radius: var(--radius-sm);
}
.form-notice strong { color: var(--orange); }

#form-status {
  margin-top: 1rem;
  padding: .9rem 1.25rem;
  border-radius: var(--radius-md);
  font-size: .95rem;
  display: none;
}
#form-status.success { background: rgba(20,184,166,.12); border: 1px solid var(--teal); color: var(--teal-lt); display: block; }
#form-status.error   { background: rgba(239,68,68,.1); border: 1px solid #ef4444; color: #fca5a5; display: block; }
.required-mark { color: var(--orange); }
.field-error { font-size: .8rem; color: #fca5a5; display: none; }
input.invalid, textarea.invalid, select.invalid { border-color: #ef4444; }
input.invalid + .field-error, textarea.invalid + .field-error, select.invalid + .field-error { display: block; }

/* ---- Business questions ---- */
.questions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%,340px),1fr));
  gap: 1rem;
}
.question-item {
  display: flex;
  gap: .75rem;
  padding: 1rem 1.25rem;
  background: rgba(255,255,255,.03);
  border: 1px solid rgba(20,184,166,.15);
  border-radius: var(--radius-md);
  font-size: .93rem;
  color: var(--text-on-dark);
  transition: border-color .2s;
}
.question-item:hover { border-color: var(--teal); }
.question-item::before {
  content: '?';
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  background: rgba(245,158,11,.15);
  border-radius: 50%;
  color: var(--orange);
  font-weight: 800;
  font-size: .8rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: .05rem;
}

/* ---- Principle list ---- */
.principle-list { list-style: none; padding: 0; display: flex; flex-direction: column; gap: .75rem; }
.principle-list li {
  padding: 1rem 1.25rem;
  background: rgba(255,255,255,.04);
  border-left: 3px solid var(--teal);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-size: .95rem;
  color: var(--text-on-dark);
}
.principle-list li strong { color: var(--white); display: block; margin-bottom: .2rem; }

/* ---- Delivery CTA ---- */
.cta-banner {
  background: linear-gradient(135deg, var(--navy-lt) 0%, rgba(20,184,166,.12) 100%);
  border: 1px solid rgba(20,184,166,.25);
  border-radius: var(--radius-xl);
  padding: 3.5rem 2.5rem;
  text-align: center;
}
.cta-banner h2 { color: var(--white); margin-bottom: 1rem; }
.cta-banner p  { color: var(--text-on-dark); max-width: 60ch; margin-inline: auto; margin-bottom: 2rem; }

/* ---- Service detail hero ---- */
.service-nav {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin-bottom: 1.5rem;
}
.service-nav a {
  font-size: .78rem;
  color: var(--gray-400);
  text-decoration: none;
}
.service-nav a:hover { color: var(--teal); }
.service-nav a + a::before { content: ' / '; }

/* ---- Contact info block ---- */
.contact-info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px,1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}
.contact-info-item {
  display: flex;
  flex-direction: column;
  gap: .4rem;
}
.contact-info-item .label {
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--teal);
}
.contact-info-item .value { color: var(--white); font-size: .95rem; }
.contact-info-item a { color: var(--white); }
.contact-info-item a:hover { color: var(--teal); }

/* ---- Automation workflow ---- */
.workflow-track {
  display: flex;
  align-items: center;
  gap: 0;
  overflow-x: auto;
  padding-bottom: .5rem;
  scroll-snap-type: x mandatory;
}
.workflow-step {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  scroll-snap-align: start;
}
.workflow-box {
  background: rgba(20,184,166,.1);
  border: 1px solid rgba(20,184,166,.3);
  border-radius: var(--radius-md);
  padding: .9rem 1.1rem;
  font-size: .85rem;
  font-weight: 600;
  color: var(--teal-lt);
  white-space: nowrap;
  min-width: 110px;
  text-align: center;
}
.workflow-arrow {
  color: var(--teal);
  padding: 0 .5rem;
  font-size: 1.1rem;
  opacity: .6;
  flex-shrink: 0;
}

/* ---- Governance block ---- */
.governance-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%,220px),1fr));
  gap: 1rem;
}
.gov-item {
  display: flex;
  gap: .75rem;
  padding: 1rem;
  background: rgba(255,255,255,.03);
  border: 1px solid rgba(20,184,166,.15);
  border-radius: var(--radius-md);
  font-size: .88rem;
  color: var(--text-on-dark);
}
.gov-item::before {
  content: '✓';
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  background: rgba(20,184,166,.15);
  border-radius: 50%;
  color: var(--teal);
  font-size: .75rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ---- AI principles ---- */
.ai-principles {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%,240px),1fr));
  gap: 1rem;
}
.ai-principle {
  display: flex;
  gap: .75rem;
  padding: .9rem 1rem;
  background: rgba(255,255,255,.03);
  border: 1px solid rgba(20,184,166,.15);
  border-radius: var(--radius-md);
  font-size: .88rem;
  color: var(--text-on-dark);
  align-items: flex-start;
}
.ai-principle-num {
  flex-shrink: 0;
  min-width: 24px;
  height: 24px;
  background: rgba(20,184,166,.15);
  border-radius: 50%;
  color: var(--teal);
  font-size: .75rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ---- Footer ---- */
.site-footer {
  background: var(--gray-900);
  color: var(--gray-400);
  padding: 4rem 0 2rem;
  border-top: 1px solid rgba(20,184,166,.12);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}
@media (max-width: 860px) { .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; } }
@media (max-width: 540px) { .footer-grid { grid-template-columns: 1fr; gap: 1.5rem; } }
.footer-brand { max-width: 320px; }
.footer-brand .footer-logo { margin-bottom: 1rem; display: block; }
.footer-brand .footer-logo img { height: 32px; }
.footer-brand p { font-size: .88rem; line-height: 1.65; margin-bottom: 1rem; }
.footer-heading {
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--white);
  margin-bottom: 1rem;
}
.footer-links { list-style: none; padding: 0; display: flex; flex-direction: column; gap: .55rem; }
.footer-links a { color: var(--gray-400); font-size: .88rem; text-decoration: none; }
.footer-links a:hover { color: var(--teal); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.07);
  padding-top: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: .82rem;
}
.footer-email a { color: var(--teal); }

/* ---- Skip link (a11y) ---- */
.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  background: var(--teal);
  color: var(--navy);
  padding: .6rem 1.2rem;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  font-weight: 700;
  z-index: 9999;
}
.skip-link:focus { top: 0; }

/* ---- Utilities ---- */
.visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }
.font-mono { font-family: var(--font-mono); font-size: .85em; }
.text-teal   { color: var(--teal); }
.text-orange { color: var(--orange); }
.text-muted  { color: var(--gray-600); }
.text-muted-dark { color: var(--text-on-dark); }
.divider { border: none; border-top: 1px solid var(--gray-200); margin: 0; }
.divider--dark { border-top-color: rgba(20,184,166,.15); }