/* ===========================================================
   HGGarge — Energy Systems
   Design tokens
   =========================================================== */
:root{
  --bg:        #10171A;
  --bg-alt:    #182123;
  --surface:   #1E2A2D;
  --surface-2: #24322F;
  --line:      rgba(242,240,234,0.09);
  --line-strong: rgba(242,240,234,0.18);
  --text:      #F2F0EA;
  --text-dim:  #A9B3B2;
  --text-faint:#71807D;
  --amber:     #E8A33D;
  --amber-dim: #B77E2C;
  --teal:      #3FA98C;
  --teal-dim:  #2C7D67;

  --font-display: "Space Grotesk", "Helvetica Neue", Arial, sans-serif;
  --font-body: "Inter", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;

  --container: 1180px;
  --radius: 3px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
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;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:600;
  line-height:1.12;
  margin:0 0 .5em;
  letter-spacing:-0.01em;
}
p{margin:0 0 1.1em;color:var(--text-dim);}
ul{margin:0;padding:0;}
.container{max-width:var(--container);margin:0 auto;padding:0 32px;}
section{position:relative;}

::selection{background:var(--amber);color:#161E21;}

/* focus visibility */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible{
  outline:2px solid var(--amber);
  outline-offset:3px;
}

/* ---------------- Bilingual toggle ---------------- */
html[data-lang="tr"] [data-lang-content="en"]{display:none !important;}
html[data-lang="en"] [data-lang-content="tr"]{display:none !important;}

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

/* ---------------- Eyebrow / labels ---------------- */
.eyebrow{
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:0.14em;
  text-transform:uppercase;
  color:var(--amber);
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:18px;
}
.eyebrow::before{
  content:"";
  width:22px;height:1px;background:var(--amber);
  display:inline-block;
}

/* ---------------- Header ---------------- */
.site-header{
  position:sticky; top:0; z-index:100;
  background:rgba(16,23,26,0.86);
  backdrop-filter: blur(10px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex; align-items:center; justify-content:space-between;
  height:76px;
}
.brand{display:flex;align-items:center;gap:12px;}
.brand img{width:34px;height:34px;}
.brand-word{
  font-family:var(--font-display);
  font-size:19px;
  font-weight:700;
  letter-spacing:-0.01em;
}
.brand-word span{color:var(--amber);}

.main-nav{display:flex;align-items:center;gap:36px;}
.main-nav a{
  font-size:14.5px;
  color:var(--text-dim);
  transition:color .15s;
  position:relative;
}
.main-nav a:hover{color:var(--text);}
.main-nav a.active{color:var(--text);}
.main-nav a.active::after{
  content:"";
  position:absolute; left:0; right:0; bottom:-26px;
  height:2px; background:var(--amber);
}

.header-actions{display:flex;align-items:center;gap:18px;}
.lang-toggle{
  display:flex; border:1px solid var(--line-strong); border-radius:20px; overflow:hidden;
  font-family:var(--font-mono); font-size:12px;
}
.lang-toggle button{
  background:transparent;border:none;color:var(--text-faint);
  padding:6px 13px; cursor:pointer; font-family:var(--font-mono); font-size:12px;
  transition:all .15s;
}
.lang-toggle button.is-active{background:var(--amber);color:#161E21;font-weight:700;}

.btn{
  display:inline-flex; align-items:center; gap:8px;
  padding:11px 22px;
  border-radius:2px;
  font-size:14px; font-weight:600;
  border:1px solid var(--amber);
  transition:all .15s;
  cursor:pointer;
  font-family:var(--font-body);
}
.btn-primary{background:var(--amber);color:#161E21;}
.btn-primary:hover{background:#f0b25c;}
.btn-ghost{border-color:var(--line-strong); color:var(--text);}
.btn-ghost:hover{border-color:var(--amber); color:var(--amber);}

.nav-toggle{display:none;background:none;border:none;color:var(--text);cursor:pointer;}

/* ---------------- Hero ---------------- */
.hero{
  padding:96px 0 84px;
  border-bottom:1px solid var(--line);
  position:relative;
  overflow:hidden;
  background:
    radial-gradient(ellipse 900px 500px at 82% -10%, rgba(63,169,140,0.16), transparent 60%),
    radial-gradient(ellipse 700px 500px at 10% 110%, rgba(232,163,61,0.12), transparent 60%);
}
.hero-grid{display:grid;grid-template-columns:1.15fr 0.85fr;gap:64px;align-items:center;}
.hero h1{font-size:clamp(34px,4.6vw,58px);}
.hero h1 em{font-style:normal;color:var(--amber);}
.hero-sub{font-size:17.5px;max-width:520px;}
.hero-cta{display:flex;gap:14px;margin-top:30px;flex-wrap:wrap;}
.hero-stats{display:flex;gap:36px;margin-top:52px;}
.hero-stats div{border-left:2px solid var(--amber);padding-left:14px;}
.hero-stats .num{font-family:var(--font-mono);font-size:26px;font-weight:600;}
.hero-stats .label{font-size:12.5px;color:var(--text-faint);}

/* signature: energy flow diagram */
.flowline-wrap{position:relative;}
.flowline text{font-family:var(--font-mono);font-size:9px;fill:var(--text-faint);letter-spacing:.08em;}
.flow-path{
  fill:none;stroke:var(--line-strong);stroke-width:1.4;
}
.flow-path-active{
  fill:none;stroke:var(--teal);stroke-width:1.6;
  stroke-dasharray:6 10;
  animation:flow 3.2s linear infinite;
}
@keyframes flow{to{stroke-dashoffset:-160;}}
.flow-node{fill:var(--bg);stroke:var(--amber);stroke-width:2;}
.flow-node-alt{fill:var(--bg);stroke:var(--teal);stroke-width:2;}
.flow-pulse{fill:var(--amber);animation:pulse 3.2s ease-in-out infinite;}
@keyframes pulse{0%,100%{opacity:.25;}50%{opacity:1;}}

/* section divider using the same flow motif */
.divider{padding:6px 0 2px;}
.divider svg{width:100%;height:34px;display:block;}

/* ---------------- Generic section ---------------- */
.section{padding:88px 0;}
.section-alt{background:var(--bg-alt);}
.section-head{max-width:640px;margin-bottom:52px;}
.section-head h2{font-size:clamp(26px,3vw,38px);}

/* ---------------- Cards / grids ---------------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:26px;}
.card{
  background:var(--surface);
  border:1px solid var(--line);
  padding:32px 28px;
  border-radius:var(--radius);
  transition:border-color .18s, transform .18s;
}
.card:hover{border-color:var(--amber-dim);transform:translateY(-3px);}
.card .icon{width:40px;height:40px;margin-bottom:20px;color:var(--amber);}
.card h3{font-size:19px;margin-bottom:10px;}
.card p{font-size:14.5px;margin-bottom:0;}

/* process steps (real sequence -> numbering justified) */
.process{counter-reset:step;}
.step{
  display:grid;grid-template-columns:64px 1fr;gap:22px;
  padding:28px 0;border-top:1px solid var(--line);
}
.step:last-child{border-bottom:1px solid var(--line);}
.step-num{
  counter-increment:step;
  font-family:var(--font-mono);color:var(--amber);font-size:14px;
}
.step-num::before{content:"0" counter(step);}
.step h3{font-size:18px;margin-bottom:8px;}
.step p{margin-bottom:0;font-size:14.5px;max-width:640px;}

/* stat band */
.stat-band{
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  background:var(--bg-alt);
}
.stat-band .grid-3{padding:52px 0;}
.stat{text-align:left;border-left:2px solid var(--teal);padding-left:18px;}
.stat .num{font-family:var(--font-mono);font-size:34px;font-weight:600;color:var(--text);}
.stat .label{color:var(--text-faint);font-size:13.5px;margin-top:6px;}

/* CTA band */
.cta-band{
  padding:76px 0;
  background:linear-gradient(120deg, rgba(232,163,61,0.10), rgba(63,169,140,0.10));
  border-top:1px solid var(--line); border-bottom:1px solid var(--line);
  text-align:center;
}
.cta-band h2{font-size:clamp(24px,3vw,34px);max-width:640px;margin:0 auto 14px;}
.cta-band p{max-width:520px;margin:0 auto 30px;}
.cta-band .hero-cta{justify-content:center;}

/* ---------------- Blog ---------------- */
.blog-list{display:grid;grid-template-columns:repeat(2,1fr);gap:30px;}
.post-card{border:1px solid var(--line);background:var(--surface);border-radius:var(--radius);overflow:hidden;transition:border-color .18s;}
.post-card:hover{border-color:var(--amber-dim);}
.post-thumb{height:180px;background:linear-gradient(135deg,var(--bg-alt),var(--surface-2));position:relative;overflow:hidden;}
.post-thumb svg{position:absolute;inset:0;width:100%;height:100%;}
.post-body{padding:24px 26px 28px;}
.post-meta{font-family:var(--font-mono);font-size:12px;color:var(--text-faint);margin-bottom:10px;letter-spacing:.05em;}
.post-body h3{font-size:19px;margin-bottom:10px;}
.post-body p{font-size:14.5px;}
.post-link{font-size:13.5px;color:var(--amber);font-weight:600;}

.article-hero{padding:60px 0 40px;border-bottom:1px solid var(--line);}
.breadcrumb{font-size:13px;color:var(--text-faint);margin-bottom:26px;font-family:var(--font-mono);}
.breadcrumb a{color:var(--text-faint);}
.breadcrumb a:hover{color:var(--amber);}
.article-hero h1{font-size:clamp(28px,4vw,44px);max-width:820px;}
.article-meta{display:flex;gap:22px;color:var(--text-faint);font-family:var(--font-mono);font-size:12.5px;margin-top:22px;}

.article-body{max-width:760px;margin:0 auto;padding:56px 0;}
.article-body h2{font-size:26px;margin-top:2.2em;}
.article-body h3{font-size:20px;margin-top:1.6em;}
.article-body p{font-size:16px;color:var(--text-dim);}
.article-body ul{margin:0 0 1.4em;padding-left:20px;}
.article-body li{color:var(--text-dim);margin-bottom:.5em;}
.article-body strong{color:var(--text);}
.article-body blockquote{
  border-left:3px solid var(--amber);
  margin:2em 0;padding:6px 0 6px 22px;
  color:var(--text);font-family:var(--font-display);font-size:19px;
}
.pull-callout{
  background:var(--surface);border:1px solid var(--line);border-left:3px solid var(--teal);
  padding:22px 26px;border-radius:var(--radius);margin:2em 0;font-size:14.5px;color:var(--text-dim);
}

/* ---------------- Team / About ---------------- */
.founder{display:grid;grid-template-columns:340px 1fr;gap:56px;align-items:start;}
.founder-photo{
  aspect-ratio:4/5;border-radius:var(--radius);
  background:linear-gradient(160deg,var(--surface-2),var(--bg-alt));
  border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;
  overflow:hidden;position:relative;
}
.founder-photo svg{width:70%;}
.founder-name{font-family:var(--font-display);font-size:15px;color:var(--amber);margin-top:18px;}
.founder-role{font-size:13px;color:var(--text-faint);font-family:var(--font-mono);}
.timeline{margin-top:20px;}

/* ---------------- Contact ---------------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;}
.info-row{display:grid;grid-template-columns:28px 1fr;gap:14px;padding:18px 0;border-top:1px solid var(--line);}
.info-row:last-child{border-bottom:1px solid var(--line);}
.info-row .label{font-family:var(--font-mono);font-size:11.5px;color:var(--text-faint);text-transform:uppercase;letter-spacing:.08em;margin-bottom:4px;}
.info-row .value{font-size:15px;color:var(--text);}
.map-placeholder{
  margin-top:32px;height:220px;border:1px dashed var(--line-strong);border-radius:var(--radius);
  display:flex;align-items:center;justify-content:center;color:var(--text-faint);
  font-family:var(--font-mono);font-size:12.5px;background:var(--surface);
}
.form-field{margin-bottom:20px;}
.form-field label{display:block;font-size:13px;color:var(--text-faint);margin-bottom:8px;font-family:var(--font-mono);}
.form-field input,.form-field textarea{
  width:100%;background:var(--surface);border:1px solid var(--line-strong);
  color:var(--text);padding:13px 14px;border-radius:2px;font-family:var(--font-body);font-size:14.5px;
}
.form-field textarea{resize:vertical;min-height:120px;}
.form-field input:focus,.form-field textarea:focus{border-color:var(--amber);outline:none;}
.form-note{font-size:12.5px;color:var(--text-faint);margin-top:14px;}

/* ---------------- Footer ---------------- */
.site-footer{border-top:1px solid var(--line);padding:64px 0 34px;background:var(--bg-alt);}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;margin-bottom:52px;}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:14px;max-width:280px;}
.footer-col h4{font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--text-faint);margin-bottom:18px;font-weight:500;}
.footer-col a, .footer-col p{display:block;font-size:14px;color:var(--text-dim);margin-bottom:12px;}
.footer-col a:hover{color:var(--amber);}
.footer-bottom{
  display:flex;justify-content:space-between;align-items:center;
  padding-top:28px;border-top:1px solid var(--line);
  font-size:12.5px;color:var(--text-faint);flex-wrap:wrap;gap:12px;
}
.footer-bottom a{color:var(--text-faint);}
.footer-bottom a:hover{color:var(--amber);}

/* ---------------- Responsive ---------------- */
@media (max-width:960px){
  .hero-grid{grid-template-columns:1fr;}
  .grid-3{grid-template-columns:1fr 1fr;}
  .founder{grid-template-columns:1fr;}
  .contact-grid{grid-template-columns:1fr;}
  .blog-list{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:760px){
  .main-nav{
    position:fixed;top:76px;left:0;right:0;bottom:0;
    background:var(--bg);flex-direction:column;align-items:flex-start;
    padding:30px 32px;gap:22px;
    transform:translateX(100%);transition:transform .25s ease;
    overflow-y:auto;
  }
  .main-nav.is-open{transform:translateX(0);}
  .nav-toggle{display:block;}
  .grid-3{grid-template-columns:1fr;}
  .grid-2{grid-template-columns:1fr;}
  .hero{padding:56px 0 56px;}
  .header-actions .btn-ghost{display:none;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .step{grid-template-columns:1fr;}
  .hero-stats{flex-wrap:wrap;gap:24px;}
}