/* Gökyuva tanıtım sitesi (KARAR 9 Eyl) — dış font/CDN YOK (CSP self). */
:root {
  --blue-900: #0f2a5c;
  --blue-700: #1d4ed8;
  --blue-600: #2563eb;
  --blue-400: #38bdf8;
  --blue-50: #eff6ff;
  --ink: #0f172a;
  --ink-2: #334155;
  --muted: #64748b;
  --line: #e2e8f0;
  --bg: #ffffff;
  --bg-alt: #f8fafc;
  --radius: 16px;
  --shadow: 0 10px 30px rgba(15, 42, 92, 0.08);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
}
a { color: var(--blue-700); }
h1, h2, h3 { line-height: 1.2; margin: 0 0 0.5em; letter-spacing: -0.01em; }
h1 { font-size: clamp(2rem, 4.5vw, 3.25rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.125rem); }
h3 { font-size: 1.125rem; }
p { margin: 0 0 1em; }
.muted { color: var(--muted); font-size: 0.95rem; }

/* Üst bar */
.topbar {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: 0.75rem clamp(1rem, 5vw, 3rem);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 0.5rem; font-weight: 800; font-size: 1.25rem; color: var(--blue-700); text-decoration: none; }
.topnav { display: flex; align-items: center; gap: 1.25rem; flex-wrap: wrap; }
.topnav a { text-decoration: none; color: var(--ink-2); font-weight: 500; }
.topnav a:hover { color: var(--blue-700); }

/* Düğmeler */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 0.6rem 1.1rem; border-radius: 12px; font-weight: 600; text-decoration: none;
  border: 1px solid transparent; cursor: pointer; font-size: 0.95rem; transition: background 0.15s, transform 0.15s;
}
.btn-lg { padding: 0.85rem 1.5rem; font-size: 1.05rem; }
.btn-primary { background: var(--blue-600); color: #fff !important; }
.btn-primary:hover { background: var(--blue-700); transform: translateY(-1px); }
.btn-primary:disabled { opacity: 0.55; cursor: not-allowed; transform: none; }
.btn-ghost { border-color: var(--line); color: var(--blue-700) !important; background: #fff; }
.btn-ghost:hover { background: var(--blue-50); }

/* Kahraman */
.hero {
  display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 3rem; align-items: center;
  padding: clamp(3rem, 8vw, 6rem) clamp(1rem, 5vw, 3rem) clamp(2rem, 6vw, 4rem);
  max-width: 1200px; margin: 0 auto;
}
.eyebrow { color: var(--blue-600); font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; font-size: 0.8rem; }
.lead { font-size: 1.15rem; color: var(--ink-2); max-width: 40rem; }
.hero-actions { display: flex; gap: 0.75rem; flex-wrap: wrap; margin: 1.5rem 0; }
.hero-badges { list-style: none; padding: 0; margin: 0; display: flex; gap: 0.5rem; flex-wrap: wrap; }
.hero-badges li { background: var(--blue-50); color: var(--blue-900); padding: 0.35rem 0.75rem; border-radius: 999px; font-size: 0.85rem; font-weight: 600; }
.hero-art { text-align: center; }
.hero-art img { filter: drop-shadow(0 20px 30px rgba(37, 99, 235, 0.18)); }
.hero-quote { margin-top: 1rem; color: var(--blue-900); font-style: italic; font-weight: 500; }

/* Bölümler */
.section { padding: clamp(2.5rem, 6vw, 5rem) clamp(1rem, 5vw, 3rem); max-width: 1200px; margin: 0 auto; }
.section-alt { position: relative; }
.section-alt::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: var(--bg-alt); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  left: 50%; width: 100vw; transform: translateX(-50%);
}
.section > h2 { text-align: center; margin-bottom: 2rem; }

/* Adımlar */
.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; counter-reset: step; }
.steps li { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 1.5rem; box-shadow: var(--shadow); }
.step-no { display: inline-flex; align-items: center; justify-content: center; width: 2.25rem; height: 2.25rem; border-radius: 50%; background: linear-gradient(135deg, var(--blue-700), var(--blue-400)); color: #fff; font-weight: 800; margin-bottom: 0.75rem; }
.steps p { margin: 0; color: var(--ink-2); font-size: 0.97rem; }

/* Özellik kartları */
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
.card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 1.5rem; }
.card h3 { color: var(--blue-900); }
.card p { margin: 0; color: var(--ink-2); font-size: 0.97rem; }

/* Güvenlik listesi */
.checklist { list-style: none; padding: 0; margin: 0 auto; max-width: 52rem; display: grid; gap: 0.9rem; }
.checklist li { padding-left: 2rem; position: relative; color: var(--ink-2); }
.checklist li::before { content: "✓"; position: absolute; left: 0; top: 0; color: var(--blue-600); font-weight: 800; }

/* İletişim */
.contact { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 3rem; align-items: start; }
.contact-intro h2 { text-align: left; }
.lead-form { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 1.75rem; box-shadow: var(--shadow); display: grid; gap: 1rem; }
.field { display: grid; gap: 0.35rem; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
label { font-weight: 600; font-size: 0.92rem; color: var(--ink-2); }
input[type="text"], input[type="email"], input[type="tel"], input[type="number"], textarea {
  width: 100%; padding: 0.7rem 0.85rem; border: 1px solid #cbd5e1; border-radius: 10px; font: inherit; color: var(--ink); background: #fff;
}
input:focus, textarea:focus { outline: 2px solid rgba(37, 99, 235, 0.35); border-color: var(--blue-600); }
input[aria-invalid="true"], textarea[aria-invalid="true"] { border-color: #ef4444; }
.consent { display: flex; gap: 0.6rem; align-items: flex-start; font-weight: 400; font-size: 0.9rem; color: var(--ink-2); }
.consent input { margin-top: 0.25rem; }
.form-status { min-height: 1.25rem; margin: 0; font-size: 0.95rem; }
.form-status.ok { color: #047857; font-weight: 600; }
.form-status.err { color: #b91c1c; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

/* Çağrı bandı (ana sayfa → /iletisim) */
.cta { text-align: center; }
.cta .lead { margin: 0 auto 1.5rem; }
.contact-intro h1 { font-size: clamp(1.75rem, 3.5vw, 2.5rem); }
.contact-intro .checklist { margin: 1rem 0 1.5rem; }

/* KVKK */
.kvkk { max-width: 52rem; }
.kvkk h2 { text-align: left; font-size: 1.25rem; }
.kvkk p { color: var(--ink-2); font-size: 0.92rem; }

/* Alt bilgi */
.footer { border-top: 1px solid var(--line); padding: 1.5rem clamp(1rem, 5vw, 3rem); display: flex; justify-content: space-between; align-items: center; gap: 1rem; flex-wrap: wrap; color: var(--muted); font-size: 0.9rem; }
.footer div { display: flex; align-items: center; gap: 0.5rem; }
.footer nav { display: flex; gap: 1.25rem; }
.footer a { color: var(--ink-2); text-decoration: none; }
.footer a:hover { color: var(--blue-700); }

@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; text-align: center; }
  .lead { margin: 0 auto; }
  .hero-actions, .hero-badges { justify-content: center; }
  .hero-art img { width: 200px; height: 200px; }
  .steps, .grid { grid-template-columns: 1fr; }
  .contact { grid-template-columns: 1fr; gap: 1.5rem; }
  .field-row { grid-template-columns: 1fr; }
  .topnav a:not(.btn) { display: none; }
}
@media print { .topbar, .hero-actions, .lead-form, .footer nav { display: none; } }