/*
Theme Name: Karroter Technique
Theme URI: https://www.karroter.com/
Author: Karroter Technique Pvt. Ltd.
Author URI: https://www.karroter.com/
Description: Custom theme for Karroter Technique Pvt. Ltd. — industrial oil filtration systems (centrifugal cleaners, oil purifier systems, electrostatic cleaners, vacuum dehydration). Built with the "Contamination to Clarity" design system: graphite/steel base, amber-to-teal accent, Space Grotesk + Inter + IBM Plex Mono type, HMI-style data panels. Includes on-page SEO/AEO schema (Organization, Product, FAQPage, BreadcrumbList) and slug-matched templates for every product and gallery page.
Version: 1.0.0
Requires at least: 6.0
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: karroter
*/

/* ===================================================================
   KARROTER TECHNIQUE — Design System
   Concept: "Contamination → Clarity" — oil visibly moves from a raw
   amber/rust tone to a clean teal tone across the page, mirroring what
   the machines physically do. Spec data reads like the touchscreen HMI
   panels the products actually use (dark panel, mono digits).
   =================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;600;700&family=Inter:wght@400;500;600;700&family=IBM+Plex+Mono:wght@500;600&display=swap');

:root{
  /* Neutrals — tuned toward the logo's mountain gray (#6d6f71) */
  --graphite-900:#17191a;
  --graphite-800:#202324;
  --graphite-700:#3a3d3e;
  --graphite-500:#5b5e5f;
  --steel-300:#9a9c9d;
  --paper:#f5f6f4;
  --white:#ffffff;
  --line:#e0e1de;
  --line-dark:#38393a;

  /* Brand colors sampled directly from the Karroter logo:
     orange #faa21b (the circle) = "raw / contaminated oil"
     green  #4b823c (the ring / wordmark) = "clean / purified oil" */
  --oil-amber:#faa21b;
  --oil-amber-dark:#c97e0d;
  --oil-amber-tint:#fdecd0;

  --clean-teal:#4b823c;
  --clean-teal-dark:#386330;
  --clean-teal-tint:#e2ecdd;

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

  --radius:6px;
  --container:1180px;
  --shadow-card: 0 1px 2px rgba(20,24,28,.06), 0 8px 24px -12px rgba(20,24,28,.12);
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-body);
  color:var(--graphite-800);
  background:var(--paper);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
ul{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{
  font-family:var(--font-display);
  color:var(--graphite-900);
  line-height:1.15;
  margin:0 0 .5em;
  letter-spacing:-0.01em;
}
p{margin:0 0 1em;}
.container{max-width:var(--container);margin:0 auto;padding:0 24px;}
:focus-visible{outline:3px solid var(--clean-teal);outline-offset:2px;}

/* -------------------- Utility gradient rule (signature motif) ------- */
.gradient-rule{
  height:4px;width:100%;border-radius:2px;
  background:linear-gradient(90deg,var(--oil-amber) 0%, var(--oil-amber) 38%, var(--clean-teal) 68%, var(--clean-teal) 100%);
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase;
  color:var(--clean-teal-dark);font-weight:600;margin-bottom:14px;
}
.eyebrow::before{
  content:"";width:8px;height:8px;border-radius:50%;
  background:linear-gradient(90deg,var(--oil-amber),var(--clean-teal));
}
.section{padding:72px 0;}
.section-tight{padding:48px 0;}
.section-alt{background:var(--white);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-dark{background:var(--graphite-900);color:#dfe4e6;}
.section-dark h2,.section-dark h3{color:var(--white);}

/* -------------------- Buttons --------------------------------------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-body);font-weight:600;font-size:15px;
  padding:13px 24px;border-radius:var(--radius);border:1.5px solid transparent;
  cursor:pointer;transition:.15s ease;
}
.btn-primary{background:var(--clean-teal);color:var(--white);}
.btn-primary:hover{background:var(--clean-teal-dark);}
.btn-outline{border-color:var(--graphite-700);color:var(--graphite-900);background:transparent;}
.btn-outline:hover{border-color:var(--clean-teal);color:var(--clean-teal-dark);}
.btn-outline-light{border-color:rgba(255,255,255,.35);color:#fff;background:transparent;}
.btn-outline-light:hover{border-color:#fff;}
.btn-lg{padding:15px 30px;font-size:16px;}

/* -------------------- Header / Nav (light theme) ----------------------
   Dropdown visibility uses opacity + visibility + pointer-events (NOT
   display:none) so it animates, sits above the page via position:absolute
   (removed from flow — cannot push page content), and never traps clicks
   while hidden. The same rules are duplicated onto WordPress's own
   ".sub-menu" / ".menu-item-has-children" classes so a manually-built
   Appearance → Menus menu behaves identically even before (or without)
   the theme's custom nav walker being picked up.
   ------------------------------------------------------------------- */
.site-header{
  background:var(--white);
  border-bottom:1px solid var(--line);
  position:sticky;top:0;z-index:100;
}
.site-header::after{
  content:"";display:block;height:3px;width:100%;
  background:linear-gradient(90deg,var(--oil-amber) 0%, var(--oil-amber) 38%, var(--clean-teal) 68%, var(--clean-teal) 100%);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;padding:12px 24px;gap:24px;max-width:var(--container);margin:0 auto;}

.brand{display:flex;align-items:center;gap:12px;flex:none;}
.brand img{height:50px;width:auto;display:block;}
.brand-text{font-family:var(--font-display);font-weight:700;font-size:18px;color:var(--graphite-900);line-height:1.1;}
.brand-text small{display:block;font-family:var(--font-body);font-weight:500;font-size:10.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--graphite-500);margin-top:2px;}

nav.main-nav{display:flex;align-items:center;gap:6px;}
nav.main-nav > ul{display:flex;align-items:center;gap:2px;}
nav.main-nav > ul > li{position:relative;}
nav.main-nav > ul > li > a{
  display:block;padding:14px 15px;font-family:var(--font-display);font-weight:600;
  font-size:14.5px;letter-spacing:.02em;color:var(--graphite-800);
  border-bottom:3px solid transparent;
}
nav.main-nav > ul > li > a:hover,
nav.main-nav > ul > li.active > a{color:var(--clean-teal-dark);border-bottom-color:var(--oil-amber);}

/* Dropdown — a real <ul class="dropdown"> (built by Karroter_Nav_Walker),
   not a <div> wrapping loose <li> elements. Hidden state uses BOTH
   opacity/visibility (for the smooth, proven hover transition) AND
   !important + a JS-driven "js-open" class as a second, independent
   trigger — belt-and-suspenders against any external stylesheet or
   caching layer that might otherwise leave it stuck open. */
.has-dropdown .dropdown{
  position:absolute !important;top:100%;left:0;min-width:280px;
  background:var(--white);border-top:3px solid var(--clean-teal);
  box-shadow:0 20px 45px -12px rgba(20,24,28,.24);
  padding:8px 0;list-style:none;margin:0;z-index:9999;
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .18s ease, transform .18s ease, visibility .18s ease;
  pointer-events:none;
}
.has-dropdown:hover .dropdown,
.has-dropdown:focus-within .dropdown,
.has-dropdown.js-open .dropdown{
  opacity:1 !important;visibility:visible !important;transform:translateY(0);pointer-events:auto;
}
.dropdown li a{display:block;padding:10px 20px;font-family:var(--font-body);font-weight:400;font-size:14px;color:var(--graphite-700);letter-spacing:0;border-bottom:none;}
.dropdown li a:hover{background:var(--clean-teal-tint);color:var(--clean-teal-dark);}
.dropdown li a span.tag{display:block;font-family:var(--font-mono);font-size:10.5px;color:var(--clean-teal);margin-top:1px;}

.nav-cta{display:flex;align-items:center;gap:14px;flex:none;}

.menu-toggle{display:none;background:none;border:none;font-size:26px;cursor:pointer;color:var(--graphite-900);}

@media (max-width:980px){
  .nav-wrap{padding:12px 16px;}
  .brand-text{display:none;}
  .menu-toggle{display:block;}

  /* Off-canvas slide-in panel from the right, rather than a full-screen
     overlay — the same pattern the reference theme uses in production. */
  nav.main-nav{
    position:fixed;top:0;right:-100%;height:100vh;width:300px;max-width:86vw;
    background:var(--white);box-shadow:-12px 0 40px rgba(20,24,28,.18);
    flex-direction:column;align-items:stretch;padding:90px 0 24px;overflow-y:auto;
    transition:right .25s ease;z-index:150;
  }
  nav.main-nav.open{right:0;}
  nav.main-nav > ul{flex-direction:column;align-items:stretch;gap:0;}
  nav.main-nav > ul > li > a{border-bottom:1px solid var(--line);padding:14px 20px;}
  .has-dropdown .dropdown{
    position:static !important;opacity:1 !important;visibility:visible !important;pointer-events:auto;
    transform:none;box-shadow:none;border-top:none;display:none;padding:0;margin:0 0 8px 12px;
  }
  .has-dropdown.js-open .dropdown{display:block;}
}

/* -------------------- Floating action buttons (mobile-friendly reach) -- */
.float-actions{position:fixed;right:20px;bottom:20px;display:flex;flex-direction:column;gap:12px;z-index:120;}
.float-actions a{
  width:52px;height:52px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  box-shadow:0 10px 30px rgba(20,24,28,.25);color:#fff;
}
.float-actions .wa{background:#25d366;}
.float-actions .ph{background:var(--clean-teal);}
.float-actions a:hover{filter:brightness(1.06);}

/* -------------------- Breadcrumb -------------------------------------- */
.breadcrumb{background:var(--white);border-bottom:1px solid var(--line);}
.breadcrumb ol{display:flex;flex-wrap:wrap;gap:6px;padding:13px 0;font-size:13px;color:var(--graphite-500);max-width:var(--container);margin:0 auto;padding-left:24px;padding-right:24px;}
.breadcrumb a{color:var(--clean-teal-dark);font-weight:500;}
.breadcrumb li:not(:last-child)::after{content:"/";margin-left:6px;color:var(--steel-300);}

/* -------------------- Hero -------------------------------------------- */
.hero{
  position:relative;overflow:hidden;
  background:
    radial-gradient(1100px 480px at 82% -10%, rgba(18,118,110,.18), transparent 60%),
    radial-gradient(900px 420px at -10% 110%, rgba(193,127,42,.16), transparent 60%),
    var(--graphite-900);
  color:#fff;padding:88px 0 64px;
}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center;}
.hero h1{color:#fff;font-size:44px;max-width:640px;}
.hero p.lead{color:#b9c2c4;font-size:18px;max-width:520px;}
.hero-actions{display:flex;gap:14px;margin-top:28px;flex-wrap:wrap;}
.hero-stats{display:flex;gap:28px;margin-top:44px;flex-wrap:wrap;}
.hero-stats .stat b{display:block;font-family:var(--font-mono);font-size:26px;color:var(--clean-teal);}
.hero-stats .stat span{font-size:12.5px;color:var(--steel-300);}

/* HMI gauge illustration */
.hmi-panel{
  background:var(--graphite-800);border:1px solid var(--line-dark);border-radius:14px;
  padding:26px;box-shadow:var(--shadow-card);
}
.hmi-panel .hmi-head{display:flex;justify-content:space-between;align-items:center;font-family:var(--font-mono);font-size:11px;color:var(--steel-300);letter-spacing:.06em;text-transform:uppercase;margin-bottom:16px;}
.hmi-dot{width:8px;height:8px;border-radius:50%;background:var(--clean-teal);box-shadow:0 0 0 4px rgba(18,118,110,.25);display:inline-block;margin-right:6px;}
.hmi-bar-track{height:10px;border-radius:5px;background:var(--graphite-700);overflow:hidden;margin:10px 0 4px;}
.hmi-bar-fill{height:100%;border-radius:5px;background:linear-gradient(90deg,var(--oil-amber),var(--clean-teal));}
.hmi-labels{display:flex;justify-content:space-between;font-family:var(--font-mono);font-size:11px;color:var(--steel-300);}
.hmi-readout{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:20px;}
.hmi-readout div{background:var(--graphite-900);border:1px solid var(--line-dark);border-radius:8px;padding:12px 14px;}
.hmi-readout div span{display:block;font-size:11px;color:var(--steel-300);text-transform:uppercase;letter-spacing:.05em;}
.hmi-readout div b{font-family:var(--font-mono);color:var(--clean-teal);font-size:19px;}

@media (max-width:980px){
  .hero-grid{grid-template-columns:1fr;}
  .hero h1{font-size:34px;}
}

/* -------------------- Cards / Grids ------------------------------------ */
.grid{display:grid;gap:24px;}
.grid-3{grid-template-columns:repeat(3,1fr);}
.grid-2{grid-template-columns:repeat(2,1fr);}
.grid-4{grid-template-columns:repeat(4,1fr);}
@media (max-width:980px){.grid-3,.grid-4{grid-template-columns:repeat(2,1fr);}}
@media (max-width:640px){.grid-3,.grid-4,.grid-2{grid-template-columns:1fr;}}

.card{
  background:var(--white);border:1px solid var(--line);border-radius:10px;
  padding:26px;transition:.15s ease;
}
.card:hover{border-color:var(--clean-teal);box-shadow:var(--shadow-card);transform:translateY(-2px);}
.card .icon{
  width:44px;height:44px;border-radius:9px;margin-bottom:16px;
  background:var(--clean-teal-tint);color:var(--clean-teal-dark);
  display:flex;align-items:center;justify-content:center;font-family:var(--font-mono);font-weight:700;
}
.card h3{font-size:18px;}
.card p{color:var(--graphite-500);font-size:14.5px;margin-bottom:14px;}
.card .card-link{font-size:14px;font-weight:600;color:var(--clean-teal-dark);display:inline-flex;align-items:center;gap:6px;}

.product-card{display:flex;flex-direction:column;height:100%;}
.product-card .tag-row{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:10px;}
.product-card .model-tag{font-family:var(--font-mono);font-size:11px;background:var(--paper);border:1px solid var(--line);color:var(--graphite-700);padding:3px 8px;border-radius:20px;}

/* -------------------- Feature list with droplet marker ------------------ */
.droplet-list li{position:relative;padding-left:28px;margin-bottom:12px;font-size:15px;color:var(--graphite-700);}
.droplet-list li::before{
  content:"";position:absolute;left:0;top:5px;width:14px;height:14px;border-radius:50% 50% 50% 0;
  transform:rotate(45deg);
  background:linear-gradient(160deg,var(--oil-amber),var(--clean-teal));
}

/* -------------------- Spec table --------------------------------------- */
.spec-table{width:100%;border-collapse:collapse;background:var(--white);border:1px solid var(--line);border-radius:10px;overflow:hidden;}
.spec-table th,.spec-table td{padding:13px 18px;text-align:left;font-size:14.5px;border-bottom:1px solid var(--line);}
.spec-table th{background:var(--graphite-900);color:#fff;font-family:var(--font-mono);font-size:12.5px;text-transform:uppercase;letter-spacing:.04em;font-weight:600;}
.spec-table td.num{font-family:var(--font-mono);color:var(--clean-teal-dark);font-weight:600;}
.spec-table tr:last-child td{border-bottom:none;}
.spec-table tr:nth-child(even) td{background:var(--paper);}

/* -------------------- Industry chips ------------------------------------ */
.chip-row{display:flex;flex-wrap:wrap;gap:10px;}
.chip{
  font-size:13.5px;font-weight:500;padding:9px 16px;border-radius:30px;
  background:var(--white);border:1px solid var(--line);color:var(--graphite-700);
}

/* -------------------- Two column with image placeholder ------------------ */
.split{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center;}
@media (max-width:900px){.split{grid-template-columns:1fr;}}
.media-frame{
  aspect-ratio:4/3;border-radius:12px;border:1px solid var(--line);
  background:
    repeating-linear-gradient(135deg, var(--clean-teal-tint) 0 14px, var(--oil-amber-tint) 14px 28px);
  display:flex;align-items:center;justify-content:center;text-align:center;
  color:var(--graphite-700);font-family:var(--font-mono);font-size:13px;padding:20px;
}
.media-frame span{background:rgba(255,255,255,.85);padding:10px 16px;border-radius:8px;}

/* -------------------- FAQ (AEO) ------------------------------------------ */
.faq-item{border-bottom:1px solid var(--line);padding:20px 0;}
.faq-item summary{cursor:pointer;font-family:var(--font-display);font-weight:600;font-size:16.5px;color:var(--graphite-900);list-style:none;display:flex;justify-content:space-between;align-items:center;gap:16px;}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{content:"+";font-size:22px;color:var(--clean-teal);flex:none;}
.faq-item[open] summary::after{content:"–";}
.faq-item p{margin-top:12px;color:var(--graphite-500);}

/* -------------------- Testimonials --------------------------------------- */
.testimonial{background:var(--white);border:1px solid var(--line);border-radius:10px;padding:24px;}
.testimonial p{font-size:15px;color:var(--graphite-700);}
.testimonial .who{display:flex;align-items:center;gap:12px;margin-top:14px;}
.testimonial .avatar{width:38px;height:38px;border-radius:50%;background:linear-gradient(160deg,var(--oil-amber),var(--clean-teal));flex:none;}
.testimonial .who b{display:block;font-size:14px;}
.testimonial .who span{font-size:12.5px;color:var(--graphite-500);}

/* -------------------- CTA band -------------------------------------------- */
.cta-band{
  background:linear-gradient(120deg, var(--graphite-900) 0%, #1e2a2a 100%);
  color:#fff;border-radius:16px;padding:48px;display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap;
}
.cta-band h3{color:#fff;font-size:26px;margin-bottom:4px;}
.cta-band p{color:#b9c2c4;margin:0;}

/* -------------------- Footer ----------------------------------------------- */
.site-footer{background:var(--graphite-900);color:#b9c2c4;padding:60px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:36px;padding-bottom:40px;border-bottom:1px solid var(--line-dark);}
@media (max-width:900px){.footer-grid{grid-template-columns:1fr 1fr;}}
@media (max-width:560px){.footer-grid{grid-template-columns:1fr;}}
.site-footer h4{color:#fff;font-size:14px;text-transform:uppercase;letter-spacing:.05em;margin-bottom:16px;}
.site-footer ul li{margin-bottom:10px;font-size:14px;}
.site-footer a:hover{color:var(--clean-teal);}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;padding:22px 0;font-size:13px;color:var(--steel-300);flex-wrap:wrap;gap:10px;}
.footer-logo{display:flex;align-items:center;gap:10px;margin-bottom:14px;}

/* -------------------- Contact form (static markup) --------------------------- */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
@media (max-width:640px){.form-grid{grid-template-columns:1fr;}}
.form-field{display:flex;flex-direction:column;gap:6px;grid-column:span 1;}
.form-field.full{grid-column:1 / -1;}
.form-field label{font-size:13.5px;font-weight:600;color:var(--graphite-700);}
.form-field input,.form-field select,.form-field textarea{
  padding:12px 14px;border:1.5px solid var(--line);border-radius:7px;font-family:var(--font-body);font-size:14.5px;background:var(--white);
}
.form-field input:focus,.form-field select:focus,.form-field textarea:focus{border-color:var(--clean-teal);}

/* -------------------- Misc ----------------------------------------------------- */
.text-center{text-align:center;}
.max-w-640{max-width:640px;margin-left:auto;margin-right:auto;}
.mt-40{margin-top:40px;}
.section-head{max-width:680px;margin-bottom:44px;}
.badge-strip{display:flex;gap:34px;flex-wrap:wrap;align-items:center;color:var(--graphite-500);font-size:13.5px;font-family:var(--font-mono);}