/* ---------------------------------------------
   TOKENS
--------------------------------------------- */
:root{
  --bg:            #F4F5F1;
  --bg-alt:        #ECEEE8;
  --ink:           #0F2027;
  --ink-soft:      #45535A;
  --primary:       #16323E;
  --primary-dark:  #0B1E26;
  --accent:        #E07A3F;
  --accent-dim:    #C9EADD;
  --line:          #D6D9CF;
  --term-bg:       #0C1B22;
  --term-green:    #6FCF97;

  --font-display: 'IBM Plex Mono', ui-monospace, SFMono-Regular, monospace;
  --font-body:    'IBM Plex Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --wrap: 1120px;
  --radius: 6px;
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin:0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  *{ animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}

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

h1,h2,h3{
  font-family: var(--font-display);
  color: var(--primary-dark);
  margin: 0 0 0.5em;
  line-height: 1.15;
  letter-spacing: -0.01em;
}

h1{ font-size: clamp(2.2rem, 5vw, 3.4rem); font-weight: 600; }
h2{ font-size: clamp(1.5rem, 3vw, 2.1rem); font-weight: 600; }
h3{ font-size: 1.1rem; font-weight: 600; }

p{ color: var(--ink-soft); margin: 0 0 1em; }

a{ color: inherit; }

.eyebrow{
  font-family: var(--font-display);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 0.9em;
}

.accent{ color: var(--accent); }

/* subtle grain overlay for texture */
.grain{
  position: fixed; inset: 0;
  pointer-events: none;
  z-index: 999;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------------------------------------------
   BUTTONS
--------------------------------------------- */
.btn{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 0.92rem;
  font-weight: 600;
  padding: 0.85em 1.5em;
  border-radius: var(--radius);
  text-decoration: none;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}
.btn:hover{ transform: translateY(-1px); }
.btn:focus-visible{ outline: 3px solid var(--accent); outline-offset: 2px; }

.btn-primary{
  background: var(--accent);
  color: #17140F;
}
.btn-primary:hover{ background: #c96a30; }

.btn-ghost{
  background: transparent;
  border-color: var(--line);
  color: var(--primary-dark);
}
.btn-ghost:hover{ border-color: var(--primary-dark); }

.btn-block{ width: 100%; }

/* ---------------------------------------------
   HEADER
--------------------------------------------- */
.site-header{
  position: sticky; top: 0;
  z-index: 50;
  background: rgba(244,245,241,0.88);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.header-inner{
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.logo{
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  text-decoration: none;
  color: var(--primary-dark);
  letter-spacing: 0.01em;
}
.logo-dash{ color: var(--accent); }

.main-nav{
  display: flex;
  align-items: center;
  gap: 2rem;
  font-family: var(--font-display);
  font-size: 0.9rem;
}
.main-nav a{ text-decoration: none; color: var(--ink-soft); }
.main-nav a:hover{ color: var(--primary-dark); }

.nav-toggle{ display: none; }

/* ---------------------------------------------
   HERO
--------------------------------------------- */
.hero{ padding: 5rem 0 4rem; }
.hero-grid{
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 3rem;
  align-items: center;
}
.lede{ font-size: 1.1rem; max-width: 46ch; }
.hero-actions{ display: flex; gap: 1rem; margin-top: 1.8rem; flex-wrap: wrap; }

.hero-diagram{ width: 100%; }
.topology{ width: 100%; height: auto; overflow: visible; }
.node rect{
  fill: var(--bg);
  stroke: var(--primary);
  stroke-width: 1.5;
}
.node-hub rect{
  fill: var(--primary-dark);
  stroke: var(--accent);
  stroke-width: 2;
}
.node-label{
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 600;
  fill: var(--primary-dark);
}
.node-hub .node-label{ fill: #F4F5F1; }
.node-sub{
  font-family: var(--font-display);
  font-size: 10px;
  fill: var(--ink-soft);
}
.node-hub .node-sub{ fill: var(--accent-dim); }
.node-small rect{ fill: transparent; stroke: var(--line); stroke-dasharray: 3 3; }
.node-label-sm{ font-size: 12px; fill: var(--ink-soft); }

.link{ stroke: var(--line); stroke-width: 1.5; fill: none; }
.link-dim{ stroke-dasharray: 2 4; }

.pulse{ fill: var(--accent); }
.pulse-b{ fill: var(--term-green); }
.pulse-c{ fill: var(--accent); }
.pulse-d{ fill: var(--term-green); }

/* ---------------------------------------------
   TRUST STRIP
--------------------------------------------- */
.trust-strip{
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--bg-alt);
  padding: 1.1rem 0;
}
.trust-inner{
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 0.9rem;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 0.82rem;
  color: var(--ink-soft);
  letter-spacing: 0.01em;
}
.trust-inner .dot{ color: var(--accent); }

/* ---------------------------------------------
   SERVICES
--------------------------------------------- */
.services{ padding: 5rem 0; }
.service-grid{
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  margin-top: 2.5rem;
}
.service-card{
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.8rem;
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.service-card:hover{
  border-color: var(--accent);
  transform: translateY(-2px);
}
.service-card p{ margin-bottom: 0; font-size: 0.96rem; }

/* ---------------------------------------------
   APPROACH
--------------------------------------------- */
.approach{ padding: 5rem 0; background: var(--bg-alt); }
.approach-grid{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}
.approach-list{
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}
.approach-list li{
  padding-left: 1.4rem;
  position: relative;
  color: var(--ink-soft);
  font-size: 0.96rem;
}
.approach-list li::before{
  content: '\2192';
  position: absolute; left: 0;
  color: var(--accent);
  font-weight: 700;
}
.approach-list span{
  font-family: var(--font-display);
  color: var(--primary-dark);
  font-weight: 600;
}

.approach-term{
  background: var(--term-bg);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 12px 30px rgba(11,30,38,0.25);
}
.term-bar{
  display: flex; gap: 6px;
  padding: 0.7rem 0.9rem;
  background: rgba(255,255,255,0.04);
}
.term-bar span{
  width: 10px; height: 10px; border-radius: 50%;
  background: rgba(255,255,255,0.15);
}
.term-body{
  margin: 0;
  padding: 1.4rem 1.3rem 1.8rem;
  font-family: var(--font-display);
  font-size: 0.86rem;
  line-height: 1.9;
  color: #C9D3D6;
  white-space: pre-wrap;
}
.term-prompt{ color: var(--accent); }
.term-out{ display: block; color: #8FA3AB; }
.term-ok{ display: block; color: var(--term-green); font-weight: 600; }
.term-cursor{
  color: var(--term-green);
  animation: blink 1s steps(1) infinite;
}
@keyframes blink{ 50%{ opacity: 0; } }

/* ---------------------------------------------
   STACK
--------------------------------------------- */
.stack{ padding: 5rem 0; }
.stack-grid{
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  margin-top: 2.5rem;
}
.stack-item{
  border-top: 3px solid var(--accent);
  padding-top: 1rem;
}
.stack-tag{
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--primary-dark);
  margin-bottom: 0.6rem;
}
.stack-item p{ font-size: 0.92rem; margin: 0; }

/* ---------------------------------------------
   CONTACT
--------------------------------------------- */
.contact{ padding: 5rem 0 6rem; background: var(--primary-dark); }
.contact .eyebrow{ color: var(--accent); }
.contact h2{ color: #F4F5F1; }
.contact > .wrap > .contact-single > .contact-copy > p:not(.eyebrow){ color: #B8C4C8; }

.contact-single{
  max-width: 640px;
}
.contact-details{
  margin-top: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}
.contact-line{
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  text-decoration: none;
  padding-bottom: 1rem;
  border-bottom: 1px solid rgba(244,245,241,0.12);
}
.contact-label{
  font-family: var(--font-display);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #7C8E93;
}
.contact-value{
  font-family: var(--font-display);
  font-size: 1.05rem;
  color: #F4F5F1;
  font-weight: 600;
}
a.contact-line:hover .contact-value{ color: var(--accent); }

/* ---------------------------------------------
   FOOTER
--------------------------------------------- */
.site-footer{ padding: 2rem 0; }
.footer-inner{
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-size: 0.82rem;
  color: var(--ink-soft);
}
.footer-inner a{ text-decoration: none; color: var(--primary-dark); font-weight: 600; }

/* ---------------------------------------------
   RESPONSIVE
--------------------------------------------- */
@media (max-width: 880px){
  .hero-grid, .approach-grid{ grid-template-columns: 1fr; }
  .service-grid{ grid-template-columns: 1fr; }
  .stack-grid{ grid-template-columns: repeat(2, 1fr); }
  .main-nav{
    position: fixed;
    top: 72px; left: 0; right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    align-items: flex-start;
    padding: 1.5rem 24px;
    gap: 1.2rem;
    transform: translateY(-150%);
    transition: transform 0.25s ease;
  }
  .main-nav.open{ transform: translateY(0); }
  .nav-toggle{
    display: flex;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
  }
  .nav-toggle span{
    width: 22px; height: 2px;
    background: var(--primary-dark);
  }
  .hero{ padding: 3rem 0 2.5rem; }
}

@media (max-width: 560px){
  .stack-grid{ grid-template-columns: 1fr; }
}