/* LibraryTürk geliştirici giriş sayfası — kurumsal. Marka: turuncu #FF6F0F + navy #1a2b3c.
   Hiras_Muhasebe landing kalitesi. Sol-renkli-border / "AI tasarımı" / emoji YOK. */
:root{
  --primary:#FF6F0F; --primary-dark:#e65a00; --primary-light:#ff8a3c; --primary-soft:#fff7ed;
  --secondary:#1a2b3c; --ink:#1e293b; --mut:#64748b; --light:#94a3b8;
  --line:#e2e8f0; --line-dark:#cbd5e1; --bg:#f8fafc; --white:#ffffff;
  --shadow-sm:0 1px 2px rgba(0,0,0,.05); --shadow:0 4px 6px -1px rgba(0,0,0,.08); --shadow-lg:0 12px 24px -8px rgba(16,30,54,.16);
  --radius:8px; --radius-lg:12px;
}
*{ box-sizing:border-box; }
html,body{ margin:0; }
body{ font-family:'Inter',-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif; color:var(--ink);
      background:var(--white); line-height:1.65; -webkit-font-smoothing:antialiased; }
.container{ max-width:1080px; margin:0 auto; padding:0 28px; }

/* nav */
.nav{ position:sticky; top:0; z-index:100; background:rgba(255,255,255,.9); backdrop-filter:blur(10px);
      -webkit-backdrop-filter:blur(10px); border-bottom:1px solid var(--line); }
.nav-in{ max-width:1080px; margin:0 auto; padding:0 28px; height:64px; display:flex; align-items:center; justify-content:space-between; }
.brand{ display:flex; align-items:center; gap:11px; text-decoration:none; }
.brand-logo{ height:38px; width:auto; display:block; }
.nav-act{ display:flex; align-items:center; gap:18px; }
.nav-link{ font-size:14px; color:var(--mut); text-decoration:none; font-weight:500; }
.nav-link:hover{ color:var(--ink); }

/* buttons */
.btn-primary{ display:inline-block; background:var(--primary); color:#fff; text-decoration:none; font-weight:600;
              font-size:14px; padding:9px 18px; border-radius:var(--radius); box-shadow:var(--shadow-sm); transition:background .15s; }
.btn-primary:hover{ background:var(--primary-dark); }
.btn-primary.lg{ font-size:15px; padding:13px 26px; }
.btn-ghost{ display:inline-block; color:var(--ink); text-decoration:none; font-weight:600; font-size:15px;
            padding:13px 24px; border-radius:var(--radius); border:1px solid var(--line-dark); transition:.15s; }
.btn-ghost:hover{ border-color:var(--primary); color:var(--primary-dark); }

/* hero */
.hero{ background:linear-gradient(180deg,var(--primary-soft),#fff 72%); border-bottom:1px solid var(--line); padding:72px 0 64px; }
.eyebrow{ display:inline-block; font-size:12px; font-weight:700; letter-spacing:.12em; text-transform:uppercase;
          color:var(--primary-dark); background:#fff; border:1px solid #fed7aa; padding:5px 12px; border-radius:999px;
          margin-bottom:18px; box-shadow:var(--shadow-sm); }
.hero h1{ font-size:40px; line-height:1.15; margin:0 0 16px; letter-spacing:-.02em; color:var(--secondary); }
.hero .lead{ font-size:18px; color:var(--mut); max-width:640px; margin:0 0 30px; }
.cta{ display:flex; gap:12px; flex-wrap:wrap; }

/* sections */
.sec-title{ font-size:22px; font-weight:700; color:var(--secondary); margin:64px 0 22px; letter-spacing:-.01em; }
.cards{ display:grid; grid-template-columns:repeat(2,1fr); gap:18px; }
.card{ background:#fff; border:1px solid var(--line); border-radius:var(--radius-lg); padding:22px 24px;
       box-shadow:var(--shadow-sm); transition:box-shadow .18s, transform .18s, border-color .18s; }
.card:hover{ box-shadow:var(--shadow-lg); transform:translateY(-2px); border-color:var(--line-dark); }
.card h3{ margin:0 0 7px; font-size:16px; color:var(--ink); }
.card p{ margin:0; color:var(--mut); font-size:14px; }

/* panel (başlangıç) */
.panel{ background:var(--bg); border:1px solid var(--line); border-radius:var(--radius-lg); padding:8px 24px 24px; }
table{ width:100%; border-collapse:collapse; font-size:14.5px; }
td{ padding:14px 4px; border-bottom:1px solid var(--line); vertical-align:top; }
tr:last-child td{ border-bottom:none; }
td.k{ color:var(--mut); width:200px; white-space:nowrap; }
code{ font-family:Consolas,Menlo,monospace; font-size:13px; background:#fff; color:var(--primary-dark);
      border:1px solid var(--line); padding:2px 7px; border-radius:5px; }
pre{ background:var(--secondary); color:#e2e8f0; padding:18px 20px; border-radius:var(--radius); overflow:auto;
     font-family:Consolas,Menlo,monospace; font-size:13.5px; margin:16px 0 0; }

/* footer */
footer{ margin-top:72px; border-top:1px solid var(--line); background:var(--bg); }
.foot-in{ max-width:1080px; margin:0 auto; padding:28px; display:flex; justify-content:space-between; flex-wrap:wrap; gap:12px; color:var(--mut); font-size:13px; }
footer a{ color:var(--primary-dark); text-decoration:none; }

@media(max-width:680px){ .cards{ grid-template-columns:1fr; } .hero h1{ font-size:30px; } td.k{ width:130px; } .nav-link{ display:none; } }