/* Erz Enerji - Minimal Kurumsal Tema */
:root{
  --bg:#ffffff;
  --text:#333;
  --muted:#6b7280;
  --primary:#1E88E5;
  --secondary:#43A047;
  --card:#f8fafc;
  --border:#e5e7eb;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Arial,sans-serif;line-height:1.5}
a{color:var(--primary);text-decoration:none}
.container{max-width:1100px;margin:0 auto;padding:0 20px}
.site-header{position:sticky;top:0;background:#fff;border-bottom:1px solid var(--border);z-index:10}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{font-weight:800;font-size:20px;letter-spacing:.3px}
.logo span{color:var(--primary)}
.nav a{margin:0 10px}
.nav .btn{margin-left:6px}
.nav-toggle{display:none;background:none;border:none;font-size:24px}
.site-main{padding-bottom:40px}
.btn{display:inline-block;padding:10px 16px;border-radius:999px;border:1px solid var(--border);transition:.2s all;cursor:pointer;font-weight:600}
.btn:hover{transform:translateY(-1px)}
.btn-primary{background:var(--primary);color:#fff;border-color:var(--primary)}
.btn-outline{background:#fff;color:var(--primary);border-color:var(--primary)}
.btn-secondary{background:var(--secondary);color:#fff;border-color:var(--secondary)}
.tag{font-size:12px;padding:3px 8px;border-radius:999px;background:#e8f4ff;margin-left:6px}
.badge{display:inline-block;background:#eef2ff;border:1px solid var(--border);border-radius:999px;padding:6px 10px;margin-right:6px;font-size:12px}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.card{background:#fff;border:1px solid var(--border);border-radius:16px;padding:16px}
.card.shaded{background:var(--card)}
.card.disabled{opacity:.6}
.list{list-style:none;padding:0;margin:0}
.list li{margin:8px 0}
.page-hero{padding:40px 0 10px;border-bottom:1px solid var(--border)}
.features{padding:30px 0}
.hero{background:linear-gradient(135deg, #e8f4ff, #ecfff0);border-bottom:1px solid var(--border)}
.hero-inner{display:grid;grid-template-columns:1.1fr .9fr;gap:20px;align-items:center;padding:30px 0}
.hero-visual{height:280px;border-radius:20px;border:1px solid var(--border);background:
  radial-gradient(circle at 30% 40%, rgba(30,136,229,.15), transparent 40%),
  radial-gradient(circle at 70% 60%, rgba(67,160,71,.15), transparent 40%),
  linear-gradient(180deg,#fff,#f7fbff)}
.trust{margin-top:10px}
.infographic .steps{counter-reset:stp}
.infographic .steps li{counter-increment:stp;background:#fff;border:1px solid var(--border);padding:10px 12px;margin:8px 0;border-radius:12px}
.infographic .steps li::before{content:counter(stp);display:inline-flex;align-items:center;justify-content:center;width:22px;height:22px;background:var(--primary);color:#fff;border-radius:999px;margin-right:8px;font-size:12px}
.cta-band{padding:30px 0;background:#f6fbff;border-top:1px solid var(--border);border-bottom:1px solid var(--border);text-align:center}
.timeline{padding:30px 0}
.timeline .step{display:grid;grid-template-columns:60px 1fr;gap:10px;align-items:start;margin-bottom:8px}
.timeline .num{width:44px;height:44px;border-radius:999px;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;margin-top:2px}
.about-preview{padding:20px 0}
.product{padding:10px 0 20px}
.note{padding:10px 0;color:var(--muted)}
.contact .map-wrap iframe{width:100%;height:240px;border:0;border-radius:12px}
.form .field{margin-bottom:12px}
.form label{display:block;font-size:14px;color:#111;margin-bottom:6px}
.form input,.form select,.form textarea{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:10px;background:#fff}
.honeypot{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.alert{padding:10px 12px;border-radius:10px;margin-bottom:12px}
.alert.success{background:#ecfff5;border:1px solid #c8f5db}
.alert.error{background:#fff0f0;border:1px solid #ffd1d1}
.site-footer{border-top:1px solid var(--border);background:#fff;padding:24px 0}
.site-footer .lg{font-size:22px;margin-bottom:6px}
.site-footer .copy{text-align:center;color:var(--muted);font-size:14px;border-top:1px solid var(--border);padding-top:12px;margin-top:20px}
/* Responsive */
@media (max-width: 900px){
  .grid-3{grid-template-columns:1fr 1fr}
  .hero-inner{grid-template-columns:1fr}
}
@media (max-width: 680px){
  .grid-2,.grid-3{grid-template-columns:1fr}
  .nav{display:none;position:absolute;right:10px;top:64px;background:#fff;border:1px solid var(--border);border-radius:12px;padding:10px}
  .nav.open{display:flex;flex-direction:column}
  .nav a{padding:8px 10px}
  .nav-toggle{display:block}
}