/*
Theme Name: FK Controls
Theme URI: https://example.com
Author: FK Controls
Author URI: https://example.com
Description: A custom business theme for FK Controls — industrial process monitoring, SPC, and anomaly-detection services. Blueprint-grid aesthetic with a live animated control-chart hero.
Version: 1.0.0
Requires at least: 6.0
Requires PHP: 7.4
Text Domain: fk-controls
*/

/* ==========================================================================
   Design tokens
   ========================================================================== */
:root{
  --color-bg: #0B2545;
  --color-bg-alt: #0E2E56;
  --color-bg-card: #10305F;
  --color-grid-line: rgba(255,255,255,0.055);
  --color-text: #F1F5F9;
  --color-text-muted: #93A2B8;
  --color-text-faint: #5D7091;
  --color-accent: #FF6B35;
  --color-accent-dim: rgba(255,107,53,0.14);
  --color-signal: #5EEAD4;
  --color-signal-dim: rgba(94,234,212,0.14);
  --color-border: rgba(255,255,255,0.12);
  --color-border-soft: rgba(255,255,255,0.07);

  --font-display: 'JetBrains Mono', ui-monospace, 'SF Mono', Consolas, monospace;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --container: 1180px;
  --radius: 3px;
  --grid-size: 34px;
}

/* ==========================================================================
   Reset / base
   ========================================================================== */
*, *::before, *::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin:0;
  background: var(--color-bg);
  background-image:
    linear-gradient(var(--color-grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-grid-line) 1px, transparent 1px);
  background-size: var(--grid-size) var(--grid-size);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img{ max-width:100%; display:block; }
a{ color: inherit; text-decoration:none; }
ul{ list-style:none; margin:0; padding:0; }
h1,h2,h3,h4{ font-family: var(--font-display); font-weight:600; line-height:1.15; margin:0 0 .5em; letter-spacing:-0.01em; }
p{ margin:0 0 1em; }
button{ font-family:inherit; }

:focus-visible{
  outline: 2px solid var(--color-signal);
  outline-offset: 3px;
}

.container{
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 28px;
}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:.5em;
  font-family: var(--font-display);
  font-size: 12.5px;
  letter-spacing: .08em;
  color: var(--color-signal);
  text-transform: uppercase;
  margin-bottom: 14px;
}
.eyebrow::before{
  content:"";
  width:7px; height:7px;
  background: var(--color-signal);
  box-shadow: 0 0 0 3px var(--color-signal-dim);
  border-radius: 1px;
  display:inline-block;
}
.eyebrow.alert{ color: var(--color-accent); }
.eyebrow.alert::before{ background: var(--color-accent); box-shadow: 0 0 0 3px var(--color-accent-dim); }

.btn{
  display:inline-flex;
  align-items:center;
  gap:.6em;
  font-family: var(--font-display);
  font-size: 13.5px;
  letter-spacing:.03em;
  text-transform: uppercase;
  padding: 13px 22px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor:pointer;
  transition: transform .15s ease, background .2s ease, border-color .2s ease;
}
.btn:hover{ transform: translateY(-1px); }
.btn-primary{ background: var(--color-accent); color:#0B2545; font-weight:700; }
.btn-primary:hover{ background:#ff7c4d; }
.btn-ghost{ border-color: var(--color-border); color: var(--color-text); }
.btn-ghost:hover{ border-color: var(--color-signal); color: var(--color-signal); }

/* ==========================================================================
   Header / nav
   ========================================================================== */
.site-header{
  position: sticky; top:0; z-index: 50;
  background: rgba(11,37,69,0.86);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border-soft);
}
.site-header .container{
  display:flex; align-items:center; justify-content:space-between;
  height: 76px;
}
.site-logo{
  display:flex; align-items:center; gap:10px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight:700;
  letter-spacing:.02em;
  text-transform: uppercase;
}
.site-logo .dot{
  width:9px; height:9px;
  background: var(--color-accent);
  border-radius:1px;
  box-shadow: 0 0 0 4px var(--color-accent-dim);
}
.primary-nav ul{ display:flex; gap:34px; align-items:center; }
.primary-nav a{
  font-size:14.5px;
  color: var(--color-text-muted);
  transition: color .15s ease;
}
.primary-nav a:hover, .primary-nav a.current{ color: var(--color-text); }
.nav-cta{ display:flex; align-items:center; gap:22px; }
.menu-toggle{
  display:none;
  background:none; border:none; color:var(--color-text);
  width:40px; height:40px;
}

@media (max-width: 880px){
  .primary-nav{
    position: fixed; inset: 76px 0 0 0;
    background: var(--color-bg);
    transform: translateX(100%);
    transition: transform .25s ease;
    padding: 32px 28px;
  }
  .primary-nav.is-open{ transform: translateX(0); }
  .primary-nav ul{ flex-direction:column; align-items:flex-start; gap:24px; }
  .menu-toggle{ display:block; }
  .nav-cta .btn-ghost{ display:none; }
}

/* ==========================================================================
   Hero
   ========================================================================== */
.hero{ padding: 96px 0 90px; }
.hero .container{
  display:grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 60px;
  align-items:center;
}
.hero h1{
  font-size: clamp(34px, 4.2vw, 54px);
  color: var(--color-text);
}
.hero h1 .hl{ color: var(--color-signal); }
.hero .lede{
  font-size: 18px;
  color: var(--color-text-muted);
  max-width: 46ch;
  margin-bottom: 30px;
}
.hero-actions{ display:flex; gap:14px; margin-bottom: 34px; }
.hero-proof{
  display:flex; gap:28px;
  font-family: var(--font-display);
  font-size: 12.5px;
  color: var(--color-text-faint);
  letter-spacing:.03em;
  text-transform:uppercase;
}
.hero-proof strong{ display:block; font-size:20px; color:var(--color-text); font-weight:700; }

.chart-panel{
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 22px 22px 16px;
}
.chart-panel-head{
  display:flex; justify-content:space-between; align-items:center;
  font-family: var(--font-display);
  font-size:11.5px;
  color: var(--color-text-faint);
  letter-spacing:.06em;
  margin-bottom: 8px;
  text-transform:uppercase;
}
.chart-panel-head .live{ color: var(--color-signal); display:flex; align-items:center; gap:6px; }
.chart-panel-head .live::before{
  content:""; width:6px; height:6px; background:var(--color-signal); border-radius:50%;
  animation: pulse-dot 1.6s ease-in-out infinite;
}
@keyframes pulse-dot{ 0%,100%{opacity:1;} 50%{opacity:.25;} }

.chart-annotation{
  font-family: var(--font-display);
  font-size: 12px;
  color: var(--color-accent);
  transition: opacity .4s ease, transform .4s ease;
  transform: translateY(4px);
  margin-top: 4px;
}
.chart-annotation.is-visible{ opacity:1 !important; transform:none; }

.chart-canvas-wrap{ position:relative; width:100%; height:200px; margin-top:14px; }
.chart-canvas-wrap canvas{ width:100% !important; height:200px !important; display:block; }

.chart-value-row{
  display:flex;
  align-items:baseline;
  gap:12px;
  margin-top: 16px;
}
.chart-big-value{
  font-family: var(--font-display);
  font-size: 30px;
  font-weight:700;
  color: var(--color-text);
}
.chart-delta{
  font-family: var(--font-display);
  font-size: 12.5px;
  color: var(--color-text-faint);
}
.chart-delta.is-up{ color: var(--color-accent); }
.chart-delta.is-down{ color: var(--color-signal); }
.chart-pill{
  margin-left:auto;
  font-family: var(--font-display);
  font-size: 11px;
  text-transform:uppercase;
  letter-spacing:.04em;
  padding: 5px 11px;
  border-radius: 999px;
  background: var(--color-signal-dim);
  color: var(--color-signal);
}
.chart-pill.is-alert{ background: var(--color-accent-dim); color: var(--color-accent); }

.chart-limits-row{
  display:flex;
  gap:18px;
  margin-top: 6px;
  font-family: var(--font-display);
  font-size: 11px;
  color: var(--color-text-faint);
  text-transform:uppercase;
  letter-spacing:.03em;
}
.chart-limits-row b{ color: var(--color-text-muted); font-weight:600; margin-left:4px; }

.chart-banner{
  margin-top: 14px;
  text-align:center;
  padding: 9px;
  border-radius: var(--radius);
  font-family: var(--font-display);
  font-size: 12.5px;
  text-transform:uppercase;
  letter-spacing:.04em;
  background: var(--color-signal-dim);
  color: var(--color-signal);
  transition: background .3s ease, color .3s ease;
}
.chart-banner.is-alert{ background: var(--color-accent-dim); color: var(--color-accent); }

@media (prefers-reduced-motion: reduce){
  .chart-annotation, .chart-panel-head .live::before{ animation:none !important; opacity:1 !important; }
}

@media (max-width: 880px){
  .hero .container{ grid-template-columns:1fr; }
  .hero{ padding: 56px 0 60px; }
}

/* ==========================================================================
   Sections (generic)
   ========================================================================== */
section{ padding: 84px 0; }
.section-alt{ background: var(--color-bg-alt); border-top:1px solid var(--color-border-soft); border-bottom:1px solid var(--color-border-soft); }
.section-head{ max-width: 640px; margin-bottom: 48px; }
.section-head h2{ font-size: clamp(26px, 3vw, 34px); }
.section-head p{ color: var(--color-text-muted); font-size:16.5px; }

/* Tag-style service cards */
.tag-grid{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.tag-card{
  background: var(--color-bg-card);
  border:1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 26px 24px 24px;
  transition: border-color .2s ease, transform .2s ease;
}
.tag-card:hover{ border-color: var(--color-signal); transform: translateY(-3px); }
.tag-card .tag-id{
  display:inline-block;
  font-family: var(--font-display);
  font-size: 11.5px;
  color: var(--color-signal);
  background: var(--color-signal-dim);
  border-radius: var(--radius);
  padding: 4px 8px;
  letter-spacing:.04em;
  margin-bottom: 16px;
}
.tag-card h3{ font-size: 18.5px; margin-bottom:.4em; }
.tag-card p{ color: var(--color-text-muted); font-size: 15px; margin-bottom:0; }

@media (max-width: 880px){ .tag-grid{ grid-template-columns:1fr; } }

/* Case study / blog cards */
.log-grid{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.log-card{
  border:1px solid var(--color-border);
  border-radius: var(--radius);
  overflow:hidden;
  display:flex; flex-direction:column;
  background: var(--color-bg-card);
}
.log-card-body{ padding: 22px 22px 24px; display:flex; flex-direction:column; flex:1; }
.log-index{
  font-family: var(--font-display);
  font-size: 11.5px;
  color: var(--color-text-faint);
  letter-spacing:.06em;
  margin-bottom: 10px;
}
.log-card h3{ font-size: 17px; margin-bottom: 10px; }
.log-card p{ color: var(--color-text-muted); font-size:14.5px; flex:1; }
.log-card .read-more{
  font-family: var(--font-display);
  font-size: 12.5px;
  color: var(--color-signal);
  text-transform:uppercase;
  letter-spacing:.04em;
  margin-top: 14px;
}

@media (max-width: 880px){ .log-grid{ grid-template-columns:1fr; } }

/* CTA band */
.cta-band{
  text-align:center;
  padding: 90px 0;
}
.cta-band h2{ font-size: clamp(26px,3.4vw,38px); margin-bottom: .4em; }
.cta-band p{ color: var(--color-text-muted); margin-bottom: 30px; }

/* Generic content page */
.page-hero{ padding: 64px 0 50px; border-bottom:1px solid var(--color-border-soft); }
.page-hero h1{ font-size: clamp(28px,4vw,42px); }
.page-hero p{ color: var(--color-text-muted); font-size:17px; max-width:60ch; }

.content-block{ max-width: 760px; }
.content-block h2{ font-size:22px; margin-top:1.6em; }
.content-block p, .content-block li{ color: var(--color-text-muted); font-size:16px; }
.content-block li{ margin-bottom:.4em; padding-left:1.2em; position:relative; }
.content-block li::before{ content:"—"; position:absolute; left:0; color:var(--color-signal); }

/* Two column feature (About) */
.split{ display:grid; grid-template-columns: 1fr 1fr; gap:56px; align-items:center; }
@media (max-width:880px){ .split{ grid-template-columns:1fr; } }

/* Stat row */
.stat-row{ display:flex; gap:48px; flex-wrap:wrap; margin-top:20px; }
.stat{ font-family:var(--font-display); }
.stat strong{ display:block; font-size:30px; color:var(--color-signal); }
.stat span{ font-size:12px; color:var(--color-text-faint); text-transform:uppercase; letter-spacing:.05em; }

/* ==========================================================================
   Contact form
   ========================================================================== */
.contact-grid{ display:grid; grid-template-columns: 1fr 1.1fr; gap:56px; }
@media (max-width:880px){ .contact-grid{ grid-template-columns:1fr; } }
.contact-info-item{ margin-bottom: 22px; }
.contact-info-item .label{
  font-family:var(--font-display); font-size:11.5px; color:var(--color-text-faint);
  text-transform:uppercase; letter-spacing:.06em; margin-bottom:4px;
}
.form-panel{
  background: var(--color-bg-card);
  border:1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 30px;
}
.form-row{ margin-bottom:18px; }
.form-row label{
  display:block; font-family:var(--font-display); font-size:12px;
  color: var(--color-text-faint); text-transform:uppercase; letter-spacing:.05em; margin-bottom:7px;
}
.form-row input, .form-row textarea{
  width:100%;
  background: var(--color-bg);
  border:1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 12px 14px;
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 15px;
}
.form-row input:focus, .form-row textarea:focus{ outline:none; border-color: var(--color-signal); }
.form-notice{ padding: 12px 14px; border-radius: var(--radius); font-size:14px; margin-bottom:20px; }
.form-notice.success{ background: var(--color-signal-dim); border:1px solid var(--color-signal); color:var(--color-signal); }
.form-notice.error{ background: var(--color-accent-dim); border:1px solid var(--color-accent); color:var(--color-accent); }

/* ==========================================================================
   Single post
   ========================================================================== */
.post-header{ padding: 60px 0 30px; border-bottom:1px solid var(--color-border-soft); }
.post-meta{
  font-family: var(--font-display); font-size:12.5px; color:var(--color-text-faint);
  text-transform:uppercase; letter-spacing:.05em; margin-bottom:14px;
}
.post-body{ max-width: 720px; padding-top: 44px; font-size:17px; }
.post-body p{ color:#D7DEE8; margin-bottom:1.3em; }
.post-body h2{ font-size:24px; margin-top:1.8em; }
.post-body h3{ font-size:19px; margin-top:1.4em; }
.post-body a{ color: var(--color-signal); border-bottom:1px solid rgba(94,234,212,.4); }
.post-body blockquote{
  border-left: 3px solid var(--color-accent);
  margin: 1.6em 0; padding: 4px 0 4px 20px;
  color: var(--color-text-muted); font-style: italic;
}
.post-body pre{
  background: var(--color-bg-card); border:1px solid var(--color-border);
  border-radius:var(--radius); padding:16px; overflow-x:auto; font-size:14px;
}
.post-nav{ display:flex; justify-content:space-between; padding: 40px 0 70px; border-top:1px solid var(--color-border-soft); margin-top:40px; }

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer{ border-top:1px solid var(--color-border-soft); padding: 60px 0 30px; margin-top: 40px; }
.footer-grid{ display:grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 46px; }
.footer-brand p{ color: var(--color-text-muted); font-size:14.5px; max-width:32ch; }
.footer-col h4{
  font-family:var(--font-display); font-size:12px; letter-spacing:.06em;
  color:var(--color-text-faint); text-transform:uppercase; margin-bottom:16px;
}
.footer-col ul li{ margin-bottom:10px; }
.footer-col a{ color: var(--color-text-muted); font-size:14.5px; }
.footer-col a:hover{ color: var(--color-signal); }
.footer-bottom{
  display:flex; justify-content:space-between; align-items:center;
  border-top:1px solid var(--color-border-soft); padding-top: 24px;
  font-size:13px; color: var(--color-text-faint);
}
@media (max-width: 880px){
  .footer-grid{ grid-template-columns: 1fr 1fr; }
  .footer-bottom{ flex-direction:column; gap:10px; text-align:center; }
}

/* Blog archive */
.archive-head{ padding: 60px 0 10px; }