/*
Theme Name: Hakan Karaca Engineering
Theme URI: https://hakankaraca.com/
Author: Hakan Karaca
Description: Clean, premium editorial theme for industrial automation, AI, OT/IT, MES and engineering tools.
Version: 2.0.0
License: GPL-2.0-or-later
Text Domain: hakan-karaca-engineering
*/
:root{
 --text:#0b0d10;--muted:#687078;--muted2:#8b939b;--line:#e5e8eb;--bg:#fff;--soft:#f5f6f7;
 --dark:#071017;--dark2:#0e2029;--blue:#0071e3;--cyan:#5ed7e4;--max:1280px;--reading:820px;
 --r:28px;--r2:20px;--shadow:0 16px 50px rgba(15,23,42,.08);--shadow2:0 28px 90px rgba(15,23,42,.12)
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"SF Pro Display","SF Pro Text",Inter,"Segoe UI",Helvetica,Arial,sans-serif;line-height:1.62;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto}
button,input,select,textarea{font:inherit}
.container{width:min(var(--max),calc(100% - 48px));margin:0 auto}
.site-wrap{min-height:100vh;display:flex;flex-direction:column}
/* Header */
.site-header{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,.86);backdrop-filter:saturate(180%) blur(24px);-webkit-backdrop-filter:saturate(180%) blur(24px);border-bottom:1px solid rgba(0,0,0,.06)}
.header-inner{min-height:66px;display:flex;align-items:center;gap:20px}
.brand{display:flex;align-items:center;gap:11px;min-width:215px}
.brand-mark{width:35px;height:35px;border-radius:11px;display:grid;place-items:center;background:linear-gradient(145deg,#101820,#2d6c83);color:#fff;font-size:12px;font-weight:900;box-shadow:0 8px 26px rgba(23,67,82,.18)}
.brand-copy{display:block}.brand-title{display:block;font-size:13px;font-weight:850;letter-spacing:.04em;line-height:1.08}.brand-tag{display:block;color:#7b838a;font-size:9px;margin-top:3px;letter-spacing:.03em}
.main-nav{margin-left:auto;display:flex;align-items:center}.nav-list{display:flex;align-items:center;gap:2px;list-style:none;margin:0;padding:0}.nav-list>li{position:relative}
.nav-link,.nav-dropdown summary{display:flex;align-items:center;gap:6px;padding:9px 10px;border-radius:12px;color:#20252a;font-size:11px;font-weight:760;cursor:pointer;list-style:none}.nav-link:hover,.nav-dropdown summary:hover{background:#f1f2f4}
.nav-dropdown summary::-webkit-details-marker{display:none}.nav-dropdown summary:after{content:"⌄";font-size:10px;color:#8a9198}.nav-dropdown[open] summary{background:#f1f2f4}
.nav-dropdown .dropdown{position:absolute;right:0;top:44px;width:300px;padding:8px;background:rgba(255,255,255,.96);border:1px solid rgba(0,0,0,.08);border-radius:18px;box-shadow:var(--shadow2);backdrop-filter:blur(24px)}
.dropdown a{display:block;padding:11px 12px;border-radius:12px;font-size:12px;font-weight:700}.dropdown a:hover{background:#f4f5f6}
.search-link{width:36px;height:36px;justify-content:center;padding:0;border:1px solid var(--line);border-radius:50%}.search-link span{font-size:15px;line-height:1}
.mobile-toggle{display:none;margin-left:auto;border:1px solid var(--line);background:#fff;border-radius:11px;width:38px;height:38px;align-items:center;justify-content:center;font-size:17px}
/* Hero */
.hero{background:var(--dark);color:#fff;overflow:hidden;position:relative}.hero:before{content:"";position:absolute;inset:-30% -12%;background:radial-gradient(circle at 16% 24%,rgba(54,146,255,.30),transparent 23%),radial-gradient(circle at 84% 15%,rgba(95,215,228,.25),transparent 22%),radial-gradient(circle at 60% 82%,rgba(101,80,255,.16),transparent 23%);filter:blur(12px)}
.hero:after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);background-size:72px 72px;mask-image:linear-gradient(to bottom,black 10%,transparent 98%)}
.hero-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.15fr .85fr;gap:64px;align-items:center;padding:116px 0 118px}.eyebrow{font-size:10px;font-weight:850;letter-spacing:.18em;color:#8cdee7;text-transform:uppercase;margin-bottom:18px}.hero h1{margin:0;max-width:900px;font-size:clamp(56px,7.2vw,104px);line-height:.92;letter-spacing:-.075em}.hero-lead{margin:26px 0 0;max-width:780px;color:#c8d4da;font-size:18px;line-height:1.7}.hero-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:32px}.btn{display:inline-flex;align-items:center;justify-content:center;padding:13px 18px;border-radius:999px;font-size:12px;font-weight:850;transition:.18s ease}.btn-primary{background:#fff;color:#111}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 32px rgba(255,255,255,.12)}.btn-ghost{border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.06);color:#fff}.btn-ghost:hover{background:rgba(255,255,255,.11)}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.hero-tile{padding:25px;border:1px solid rgba(255,255,255,.12);border-radius:24px;background:linear-gradient(145deg,rgba(255,255,255,.13),rgba(255,255,255,.04));min-height:168px}.hero-tile.large{grid-column:1/-1;min-height:194px}.hero-tile small{display:block;font-size:9px;letter-spacing:.14em;text-transform:uppercase;color:#8fdbe3;font-weight:850}.hero-tile strong{display:block;margin-top:11px;font-size:26px;line-height:1.1;letter-spacing:-.035em}.hero-tile p{margin:9px 0 0;color:#b8c7ce;font-size:12px;line-height:1.55}.hero-tile.stat strong{font-size:45px}
/* Common */
.section{padding:96px 0}.section.soft{background:var(--soft)}.section.dark{background:#081018;color:#fff}.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:32px}.section-head h2{margin:0;font-size:40px;line-height:1.04;letter-spacing:-.05em}.section-head p{margin:10px 0 0;max-width:760px;color:var(--muted);font-size:15px}.dark .section-head p{color:#a8b7bf}.section-link{font-size:12px;font-weight:850;color:var(--blue);white-space:nowrap}.grid{display:grid;gap:18px}
/* Editorial cards */
.posts-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.post-card,.topic-card,.tool-card,.feature-card,.mini-card{background:#fff;border:1px solid var(--line);border-radius:24px;transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}.post-card:hover,.topic-card:hover,.tool-card:hover,.mini-card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:#d7dadd}.card-body{padding:26px}.meta{font-size:9px;font-weight:850;letter-spacing:.13em;text-transform:uppercase;color:#8b9299}.post-card h3{margin:10px 0 10px;font-size:21px;line-height:1.18;letter-spacing:-.035em}.post-card p{margin:0;color:var(--muted);font-size:14px;line-height:1.65}.read{display:inline-flex;margin-top:17px;color:var(--blue);font-size:12px;font-weight:850}
/* AI */
.ai-section{background:#f2f5f7}.ai-wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:18px}.ai-feature{padding:42px;border-radius:30px;color:#fff;min-height:390px;background:radial-gradient(circle at 80% 10%,rgba(95,215,228,.25),transparent 28%),radial-gradient(circle at 20% 80%,rgba(113,87,255,.17),transparent 25%),linear-gradient(135deg,#07121a,#133846);position:relative;overflow:hidden}.ai-feature:after{content:"AI";position:absolute;right:-12px;bottom:-45px;font-size:220px;font-weight:900;letter-spacing:-.12em;color:rgba(255,255,255,.035)}.ai-feature>*{position:relative;z-index:1}.ai-label{display:inline-flex;padding:7px 10px;border:1px solid rgba(255,255,255,.12);border-radius:999px;background:rgba(255,255,255,.07);font-size:9px;font-weight:850;letter-spacing:.12em;text-transform:uppercase;color:#bcebf0}.ai-feature h3{margin:18px 0 12px;font-size:40px;line-height:1.03;letter-spacing:-.05em}.ai-feature p{max-width:740px;color:#bfd1d9;font-size:14px}.ai-feature a{display:inline-flex;margin-top:22px;padding:11px 15px;border-radius:999px;background:rgba(255,255,255,.09);font-size:11px;font-weight:850}.ai-list{display:grid;gap:18px}.ai-item{display:flex;flex-direction:column;justify-content:space-between;min-height:186px;padding:26px;border-radius:24px;background:#fff;border:1px solid var(--line)}.ai-item small{font-size:9px;text-transform:uppercase;letter-spacing:.12em;color:#8b9299;font-weight:850}.ai-item strong{display:block;margin-top:8px;font-size:20px;line-height:1.18;letter-spacing:-.03em}.ai-item span{color:var(--blue);font-size:11px;font-weight:850}
/* Topics/tools */
.topic-grid{grid-template-columns:repeat(4,minmax(0,1fr))}.topic-card{display:flex;flex-direction:column;justify-content:space-between;min-height:168px;padding:26px}.topic-card span{font-size:9px;letter-spacing:.13em;text-transform:uppercase;color:#8c9399;font-weight:850}.topic-card strong{font-size:19px;line-height:1.17;letter-spacing:-.03em}.topic-card p{margin:9px 0 0;color:var(--muted);font-size:12px}.topic-card em{margin-top:18px;color:var(--blue);font-size:11px;font-weight:850;font-style:normal}
.tools-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.tool-card{padding:26px;background:rgba(255,255,255,.04);border-color:rgba(255,255,255,.11);color:#fff}.tool-card:hover{border-color:rgba(255,255,255,.2);box-shadow:0 18px 50px rgba(0,0,0,.2)}.tool-card strong{font-size:19px;line-height:1.16;letter-spacing:-.025em}.tool-card small{display:block;margin-top:10px;color:#a7b6bd;font-size:12px;line-height:1.55}
/* Article */
.content-shell{padding:76px 0 110px}.article-wrap{max-width:var(--reading)}.breadcrumbs{font-size:11px;color:#8a9299;margin-bottom:26px}.breadcrumbs a{color:#637079}.article-meta{display:flex;gap:9px;align-items:center;flex-wrap:wrap;font-size:10px;color:#889198;margin-bottom:16px}.article-title{margin:0;font-size:clamp(42px,6vw,72px);line-height:.98;letter-spacing:-.065em}.article-tools{margin-top:34px}.article-content{font-size:17px;color:#262d31}.article-content h2{margin-top:44px;font-size:31px;line-height:1.1;letter-spacing:-.04em}.article-content h3{margin-top:32px;font-size:21px;line-height:1.2}.article-content p{margin:0 0 20px}.article-content ul,.article-content ol{padding-left:24px}.article-content li{margin:6px 0}.article-content blockquote{margin:30px 0;padding:22px 24px;border-left:3px solid #cdd4d8;background:#f6f8f9;border-radius:0 16px 16px 0}.article-content code{padding:2px 6px;background:#f1f3f4;border-radius:7px}.article-content pre{padding:20px;border-radius:18px;background:#0b1116;color:#e8f1f4;overflow:auto}.toc{margin-top:34px;padding:20px 22px;border:1px solid var(--line);border-radius:18px;background:#fafafa}.toc strong{font-size:12px}.toc ul{margin:11px 0 0;padding-left:18px}.toc li{margin:6px 0;font-size:12px}.related{margin-top:76px}.related .section-head{margin-bottom:24px}
/* Tools archive */
.tools-hero{padding:36px;border-radius:30px;background:linear-gradient(135deg,#071018,#173846);color:#fff;margin-bottom:28px}.tools-hero .eyebrow{margin-bottom:10px}.tools-hero h1{margin:0;font-size:50px;line-height:1;letter-spacing:-.055em}.tools-hero p{margin:14px 0 0;max-width:740px;color:#bdd0d7}.tools-index{grid-template-columns:repeat(3,minmax(0,1fr))}.tool-index-card{display:flex;flex-direction:column;min-height:176px;padding:24px;border:1px solid var(--line);border-radius:22px;background:#fff}.tool-index-card strong{font-size:18px;line-height:1.18;letter-spacing:-.025em}.tool-index-card p{margin:9px 0 0;color:var(--muted);font-size:12px}.tool-index-card span{margin-top:auto;color:var(--blue);font-size:11px;font-weight:850}
/* Featured */
.feature-strip{display:grid;grid-template-columns:1.2fr .8fr;gap:18px}.feature-card{padding:42px;background:linear-gradient(135deg,#edf7f9,#fff)}.feature-card h3{margin:14px 0 11px;font-size:38px;line-height:1.03;letter-spacing:-.045em}.feature-card p{max-width:760px;color:var(--muted);font-size:14px}.feature-card a{display:inline-flex;margin-top:14px;color:var(--blue);font-size:12px;font-weight:850}.mini-stack{display:grid;gap:18px}.mini-card{padding:26px;min-height:178px;display:flex;flex-direction:column;justify-content:space-between}.mini-card span{font-size:9px;letter-spacing:.13em;text-transform:uppercase;color:#8e959b;font-weight:850}.mini-card strong{font-size:22px;line-height:1.15;letter-spacing:-.03em}
/* Footer */
.site-footer{margin-top:auto;padding:58px 0 25px;background:#080d12;color:#8c979e}.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px}.site-footer h3{margin:0 0 12px;color:#fff;font-size:14px}.site-footer p,.site-footer a{font-size:12px;line-height:1.9}.site-footer a:hover{color:#fff}.footer-note{max-width:520px}.footer-bottom{margin-top:34px;padding-top:20px;border-top:1px solid rgba(255,255,255,.08);font-size:10px;color:#667279}
/* Search */
.search-box{display:flex;gap:8px;margin:22px 0 36px}.search-box input{flex:1;border:1px solid var(--line);border-radius:999px;padding:13px 17px;background:#fff}.search-box button{border:0;border-radius:999px;padding:13px 18px;background:#111;color:#fff;font-weight:800;cursor:pointer}
/* Responsive */
@media(max-width:1180px){.nav-list .optional{display:none}.hero-inner{grid-template-columns:1fr}.hero-grid{max-width:900px}.posts-grid,.tools-grid,.tools-index{grid-template-columns:repeat(2,minmax(0,1fr))}.topic-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.ai-wrap,.feature-strip{grid-template-columns:1fr}}
@media(max-width:920px){.main-nav{display:none;position:absolute;left:14px;right:14px;top:62px;padding:8px;background:rgba(255,255,255,.97);border:1px solid rgba(0,0,0,.08);border-radius:18px;box-shadow:var(--shadow2)}.main-nav.open{display:block}.nav-list{display:block}.nav-list>li{width:100%}.nav-link,.nav-dropdown summary{padding:12px 13px}.nav-dropdown .dropdown{position:static;width:auto;box-shadow:none;border:0;background:transparent;padding:0 0 8px 8px}.mobile-toggle{display:flex}.brand{min-width:0}.brand-tag{display:none}.header-inner{min-height:62px}.hero-inner{padding:84px 0}.hero h1{font-size:clamp(50px,10vw,78px)}}
@media(max-width:720px){.container{width:min(var(--max),calc(100% - 30px))}.hero-inner{padding:72px 0}.hero-grid{grid-template-columns:1fr}.hero-tile.large{grid-column:auto}.section{padding:68px 0}.section-head{display:block}.section-head h2{font-size:31px}.posts-grid,.tools-grid,.tools-index,.topic-grid{grid-template-columns:1fr}.feature-card h3,.ai-feature h3{font-size:31px}.tools-hero h1{font-size:39px}.article-title{font-size:44px}.article-content{font-size:16px}.footer-grid{grid-template-columns:1fr}.search-box{display:block}.search-box input{width:100%;margin-bottom:8px}.search-box button{width:100%}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.post-card,.topic-card,.tool-card,.mini-card{transition:none}.post-card:hover,.topic-card:hover,.tool-card:hover,.mini-card:hover{transform:none}}