/* ===================================================================
   ZAREN SYSTEMS — Executional Infrastructure
   Design language: an operations/control-room aesthetic. The subject
   is visibility across a distributed team, so the recurring visual
   device is a node map — scattered points of work, connected, with
   a signal color marking what's active right now.
   =================================================================== */

:root {
  /* Color */
  --bg:            #0A0E13;
  --surface:       #10161D;
  --surface-2:     #161D26;
  --border:        #212A34;
  --border-soft:   #1A222B;
  --text:          #E7ECF1;
  --text-muted:    #8A96A5;
  --text-faint:    #56626F;
  --signal:        #F0A64B;   /* amber — active / in progress */
  --signal-dim:    rgba(240, 166, 75, 0.14);
  --link:          #4FA9A6;   /* teal — connections / structure */
  --link-dim:      rgba(79, 169, 166, 0.14);
  --danger:        #D9705A;

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

  /* Layout */
  --content-width: 1120px;
  --radius-sm: 4px;
  --radius-md: 10px;
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 40px;
  --space-5: 64px;
  --space-6: 96px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body::before {
  /* Faint fixed grid texture, like a schematic backdrop */
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    linear-gradient(var(--border-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--border-soft) 1px, transparent 1px);
  background-size: 64px 64px;
  opacity: 0.35;
  mask-image: linear-gradient(to bottom, black, black 30%, transparent 85%);
}

a { color: var(--link); text-decoration: none; }
a:hover { color: var(--signal); }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: -0.01em;
  margin: 0;
}

h1 { font-size: clamp(2.4rem, 4.6vw, 4rem); }
h2 { font-size: clamp(1.7rem, 3vw, 2.4rem); }
h3 { font-size: 1.25rem; }

p { margin: 0; color: var(--text-muted); }

.container {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 var(--space-3);
  position: relative;
  z-index: 1;
}

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

.eyebrow::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--signal);
  box-shadow: 0 0 0 3px var(--signal-dim);
}

/* ---------- Focus states (accessibility) ---------- */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 3px;
  border-radius: 2px;
}

/* ---------- Header / Nav ---------- */
header.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(10, 14, 19, 0.86);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-soft);
}

.nav-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--text);
  letter-spacing: -0.01em;
}

.brand:hover { color: var(--text); }

.brand-mark {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

nav.main-nav {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

nav.main-nav ul {
  list-style: none;
  display: flex;
  gap: 28px;
  margin: 0;
  padding: 0;
}

nav.main-nav a {
  color: #e8e8e8;
  font-size: 0.92rem;
  font-weight: 500;
  transition: color 0.15s ease;
}

nav.main-nav a:hover,
nav.main-nav a[aria-current="page"] {
  color: var(--text);
}

nav.main-nav a[aria-current="page"] {
  position: relative;
}

nav.main-nav a[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -6px;
  height: 2px;
  background: var(--signal);
  border-radius: 2px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.9rem;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-primary {
  background: var(--signal);
  color: #17110A;
}
.btn-primary:hover {
  background: #f5b566;
  color: #17110A;
}

.btn-ghost {
  background: transparent;
  border-color: var(--border);
  color: var(--text);
}
.btn-ghost:hover {
  border-color: var(--link);
  color: var(--text);
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  padding: 8px 10px;
  cursor: pointer;
}

@media (max-width: 860px) {
  .nav-toggle { display: inline-flex; }
  nav.main-nav {
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-2) var(--space-3);
    gap: var(--space-2);
    display: none;
  }
  nav.main-nav.open { display: flex; }
  nav.main-nav ul {
    flex-direction: column;
    gap: 4px;
  }
  nav.main-nav ul a {
    display: block;
    padding: 10px 4px;
  }
  .nav-actions { display: flex; flex-direction: column; gap: 10px; }
}

/* ---------- Hero ---------- */
.hero {
  padding: var(--space-6) 0 var(--space-5);
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--space-5);
  align-items: center;
}

@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; gap: var(--space-4); }
}

.hero h1 { margin-top: var(--space-2); }

.hero .lede {
  margin-top: var(--space-3);
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 46ch;
}

.hero-actions {
  margin-top: var(--space-4);
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.node-graphic {
  width: 100%;
  height: auto;
}

.node-graphic .link-line {
  stroke: var(--border);
  stroke-width: 1;
}

.node-graphic .node-idle {
  fill: var(--surface-2);
  stroke: var(--border);
  stroke-width: 1;
}

.node-graphic .node-active {
  fill: var(--signal);
  animation: pulse 2.6s ease-in-out infinite;
  transform-origin: center;
}

.node-graphic .node-active-2 { animation-delay: 0.6s; }
.node-graphic .node-active-3 { animation-delay: 1.3s; }

.node-graphic .node-link {
  fill: var(--link);
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.45; }
}

/* ---------- Sections ---------- */
section { padding: var(--space-5) 0; position: relative; }

.section-divider {
  border: none;
  border-top: 1px solid var(--border-soft);
  margin: 0;
}

.section-head {
  max-width: 640px;
  margin-bottom: var(--space-4);
}

.section-head h2 { margin-top: var(--space-2); }
.section-head .lede { margin-top: var(--space-2); color: var(--text-muted); font-size: 1.05rem; }

/* status strip */
.status-strip {
  border-top: 1px solid var(--border-soft);
  border-bottom: 1px solid var(--border-soft);
  padding: var(--space-3) 0;
}
.status-strip .container {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  justify-content: space-between;
}
.status-item {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-faint);
}
.status-item strong {
  font-family: var(--font-body);
  color: var(--text);
  font-size: 1rem;
  font-weight: 600;
}

/* card grid */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
}
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
}
@media (max-width: 860px) {
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
}

.card {
  background: var(--surface);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-md);
  padding: var(--space-3);
}

.card .tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--link);
  text-transform: uppercase;
}

.card h3 { margin-top: 12px; }
.card p { margin-top: 10px; }

/* feature row */
.feature-row {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: var(--space-4);
  padding: var(--space-4) 0;
  border-top: 1px solid var(--border-soft);
}
.feature-row:last-child { border-bottom: 1px solid var(--border-soft); }
@media (max-width: 760px) {
  .feature-row { grid-template-columns: 1fr; gap: var(--space-2); }
}
.feature-row .index {
  font-family: var(--font-mono);
  color: var(--text-faint);
  font-size: 0.85rem;
}
.feature-row h3 { margin-bottom: 10px; }
.feature-row .detail-list {
  margin-top: var(--space-2);
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.feature-row .detail-list span {
  font-size: 0.92rem;
  color: var(--text-muted);
  display: flex;
  gap: 10px;
}
.feature-row .detail-list span::before {
  content: "→";
  color: var(--link);
  flex-shrink: 0;
}

/* CTA band */
.cta-band {
  background: var(--surface);
  border-top: 1px solid var(--border-soft);
  border-bottom: 1px solid var(--border-soft);
  text-align: center;
  padding: var(--space-5) 0;
}
.cta-band h2 { margin-bottom: var(--space-2); }
.cta-band .lede { margin: 0 auto var(--space-3); }

/* Forms */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2);
}
@media (max-width: 700px) { .form-grid { grid-template-columns: 1fr; } }

.field { display: flex; flex-direction: column; gap: 6px; margin-bottom: var(--space-2); }
.field.full { grid-column: 1 / -1; }
.field label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
}
.field input,
.field textarea,
.field select {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 11px 12px;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.95rem;
}
.field input:focus,
.field textarea:focus,
.field select:focus {
  outline: none;
  border-color: var(--link);
}
.field textarea { resize: vertical; min-height: 120px; }

/* Contact info blocks */
.info-block {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: var(--space-2) 0;
  border-bottom: 1px solid var(--border-soft);
}
.info-block:last-child { border-bottom: none; }
.info-block .icon {
  width: 34px; height: 34px;
  border-radius: var(--radius-sm);
  background: var(--surface-2);
  border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  color: var(--link);
}
.info-block h4 {
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  margin: 0 0 4px;
}
.info-block p, .info-block a { font-size: 0.95rem; }

/* FAQ */
details.faq {
  border-bottom: 1px solid var(--border-soft);
  padding: var(--space-2) 0;
}
details.faq summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--text);
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
details.faq summary::-webkit-details-marker { display: none; }
details.faq summary::after {
  content: "+";
  font-family: var(--font-mono);
  color: var(--link);
  font-size: 1.2rem;
  flex-shrink: 0;
  margin-left: 12px;
}
details.faq[open] summary::after { content: "–"; }
details.faq p { margin-top: 10px; padding-right: 30px; }

/* Legal doc */
.legal h2 {
  margin-top: var(--space-5);
  padding-top: var(--space-4);
  border-top: 1px solid var(--border-soft);
}
.legal h2:first-of-type { border-top: none; padding-top: 0; margin-top: var(--space-3); }
.legal p, .legal li { color: var(--text-muted); margin-top: 12px; }
.legal ul { padding-left: 20px; }
.legal .updated {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-faint);
}

/* ---------- Footer ---------- */
footer.site-footer {
  border-top: 1px solid var(--border-soft);
  padding: var(--space-5) 0 var(--space-3);
  margin-top: var(--space-4);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: var(--space-4);
}
@media (max-width: 860px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .footer-grid { grid-template-columns: 1fr; }
}
.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin: 0 0 14px;
}
.footer-col ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.footer-col a, .footer-col p { color: var(--text-muted); font-size: 0.92rem; }
.footer-col address { font-style: normal; color: var(--text-muted); font-size: 0.92rem; line-height: 1.7; }

.footer-bottom {
  margin-top: var(--space-5);
  padding-top: var(--space-3);
  border-top: 1px solid var(--border-soft);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 0.82rem;
  color: var(--text-faint);
}
.footer-bottom a { color: var(--text-faint); }
.footer-bottom a:hover { color: var(--link); }

/* Page header (non-home pages) */
.page-hero {
  padding: var(--space-5) 0 var(--space-4);
}
.page-hero h1 { margin-top: var(--space-2); }
.page-hero .lede { margin-top: var(--space-2); font-size: 1.08rem; max-width: 60ch; }

.pill-row { display: flex; gap: 10px; flex-wrap: wrap; margin-top: var(--space-3); }
.pill {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--link);
  background: var(--link-dim);
  border: 1px solid rgba(79,169,166,0.3);
  padding: 5px 10px;
  border-radius: 20px;
}