:root{
  /* LIGHT THEME (genel) */
  --bg: #f6f8fc;
  --surface: #ffffff;
  --card: rgba(255,255,255,0.92);
  --border: rgba(15,23,42,0.10);
  --text: #0f172a;
  --muted: rgba(15,23,42,0.68);

  /* Brand */
  --brand: #0ea5a6;              /* soft turkuaz */
  --brand2: #f59e0b;             /* soft amber */
  --link: #2563eb;

  /* NAV (koyu mavimsi - beyaz logo için) */
  --navbg1: rgba(13, 27, 59, 0.96);
  --navbg2: rgba(10, 20, 46, 0.94);
  --navborder: rgba(255,255,255,0.10);

  --shadow: 0 18px 40px rgba(15,23,42,0.08);
  --radius: 16px;
  --maxw: 1120px;
}

*{ box-sizing: border-box; }
html,body{
  margin:0; padding:0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Inter, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}
a{ color: var(--link); text-decoration: none; }
a:hover{ text-decoration: underline; }
img{ max-width: 100%; height: auto; display:block; }

.container{ max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }
.section{ padding: 72px 0; }
.section.compact{ padding: 48px 0; }

/* TOPBAR / NAV */
.topbar{
  position: sticky; top: 0; z-index: 50;
  background: linear-gradient(90deg, var(--navbg1), var(--navbg2));
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--navborder);
}
.nav{
  display:flex; align-items:center; justify-content: space-between;
  padding: 12px 0;
  gap: 16px;
}

/* BRAND (logo only) */
.brand{
  display:flex; align-items:center;
  gap: 0;
  padding: 0;
}
.brand .title{ display:none !important; }

/* Eğer HTML’de .mark kaldıysa, kutuyu öldür */
.brand .mark{
  width:auto !important; height:auto !important;
  background: transparent !important;
  border: 0 !important;
  border-radius: 0 !important;
  padding: 0 !important;
  box-shadow: none !important;
  display:block !important;
  overflow: visible !important;
}

.brand .mark img,
.brand-logo{
  height: 44px;
  width: auto;
  display:block;
  background: transparent !important;
  border: 0 !important;
  box-shadow: none !important;
  border-radius: 0 !important;

  /* küçük dokunuş: beyaz logo daha net */
  filter: drop-shadow(0 6px 14px rgba(0,0,0,0.35));
}

/* MENU */
.menu{ display:flex; gap: 18px; align-items:center; }
.menu a{
  font-size: 14px;
  color: rgba(255,255,255,0.88);
  opacity: 1;
}
.menu a:hover{
  color: rgba(255,255,255,1);
  text-decoration:none;
}
.menu a.active{
  color: rgba(255,255,255,1);
  position: relative;
}
.menu a.active::after{
  content:"";
  position:absolute;
  left:0; right:0;
  bottom:-10px;
  height:2px;
  border-radius:999px;
  background: linear-gradient(90deg, rgba(14,165,166,1), rgba(245,158,11,1));
}

/* CTA BUTTONS (nav üstünde - okunaklı koyu yazı) */
.nav-cta{ display:flex; gap: 10px; align-items:center; }

.btn{
  display:inline-flex; align-items:center; justify-content:center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: 12px;

  /* açık zemin + koyu yazı */
  border: 1px solid rgba(255,255,255,0.22);
  background: rgba(255,255,255,0.90);
  color: rgba(15,23,42,0.94);

  font-weight: 800;
  font-size: 14px;
  box-shadow: 0 10px 22px rgba(0,0,0,0.18);
  cursor: pointer;
  transition: transform 160ms ease, background 160ms ease, border-color 160ms ease;
}
.btn:hover{
  background: rgba(255,255,255,0.98);
  text-decoration:none;
  transform: translateY(-1px);
}

.btn.primary{
  border-color: rgba(14,165,166,0.55);
  background: linear-gradient(135deg, rgba(14,165,166,0.26), rgba(245,158,11,0.20));
  color: rgba(15,23,42,0.96);
}
.btn.primary:hover{
  background: linear-gradient(135deg, rgba(14,165,166,0.34), rgba(245,158,11,0.26));
}

/* HAMBURGER (koyu yazı okunaklı) */
.hamburger{
  display:none;
  width: 44px; height: 44px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,0.22);
  background: rgba(255,255,255,0.90);
  color: rgba(15,23,42,0.94);
  box-shadow: 0 10px 22px rgba(0,0,0,0.18);
  transition: transform 160ms ease, background 160ms ease;
}
.hamburger:hover{
  background: rgba(255,255,255,0.98);
  transform: translateY(-1px);
}

/* Mobile panel */
.mobile-panel{
  display:none;
  border-top: 1px solid rgba(255,255,255,0.12);
  padding: 12px 0 18px;
}
.mobile-panel a{
  display:block;
  padding: 10px 0;
  color: rgba(255,255,255,0.92);
}
.mobile-panel a:hover{ color: rgba(255,255,255,1); }

/* HERO (light) */
.hero{
  padding: 64px 0 34px;
  background:
    radial-gradient(900px 460px at 12% 10%, rgba(14,165,166,0.16), transparent 62%),
    radial-gradient(800px 420px at 88% 10%, rgba(245,158,11,0.14), transparent 62%),
    linear-gradient(180deg, rgba(15,23,42,0.02), transparent 30%);
}
.hero-grid{
  display:grid;
  grid-template-columns: 1.25fr 0.75fr;
  gap: 28px;
  align-items:center;
}
.hero h1{
  font-size: clamp(34px, 4vw, 56px);
  margin: 0 0 14px;
  letter-spacing: -0.02em;
}
.hero p{
  margin: 0 0 22px;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.65;
  max-width: 60ch;
}
.hero .hero-actions{ display:flex; gap: 10px; flex-wrap: wrap; }

.hero-card{
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.88);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
}
.hero-card .logo-wrap{
  border-radius: 14px;
  overflow:hidden;
  border: 1px solid var(--border);
  background: rgba(15,23,42,0.03);
}
.hero-card small{ display:block; margin-top: 12px; color: var(--muted); line-height:1.55; }

/* KPI + GRID */
.kpis{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 22px;
}
.kpi{
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.92);
  border-radius: 14px;
  padding: 14px;
  box-shadow: 0 10px 26px rgba(15,23,42,0.06);
}
.kpi strong{ font-size: 18px; display:block; color: rgba(15,23,42,0.95); }
.kpi span{ color: var(--muted); font-size: 12px; }

.grid3{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
.card{
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.92);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
}
.card h3{ margin: 0 0 10px; font-size: 16px; color: rgba(15,23,42,0.95); }
.card p{ margin: 0; color: var(--muted); line-height:1.7; font-size: 14px; }

.pill{
  display:inline-flex; gap: 10px; align-items:center;
  padding: 8px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.78);
  color: rgba(15,23,42,0.70);
  font-size: 12px;
}

.split{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  align-items:start;
}

/* STEPS */
.steps{ display:grid; gap: 12px; }
.step{
  display:flex; gap: 12px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.92);
  border-radius: var(--radius);
  padding: 14px;
  box-shadow: 0 10px 26px rgba(15,23,42,0.06);
}
.step .num{
  width: 34px; height: 34px;
  border-radius: 12px;
  background: rgba(14,165,166,0.14);
  border: 1px solid rgba(14,165,166,0.32);
  display:flex; align-items:center; justify-content:center;
  font-weight: 900;
  color: rgba(15,23,42,0.90);
}
.step h4{ margin: 0 0 6px; font-size: 14px; color: rgba(15,23,42,0.92); }
.step p{ margin: 0; color: var(--muted); font-size: 13px; line-height:1.7; }

/* FORMS */
.form{ display:grid; gap: 10px; }
.field{ display:grid; gap: 6px; }
label{ font-size: 13px; color: rgba(15,23,42,0.65); }

input, select, textarea{
  width: 100%;
  padding: 12px 12px;
  border-radius: 12px;
  border: 1px solid rgba(15,23,42,0.12);
  background: rgba(255,255,255,0.98);
  color: rgba(15,23,42,0.92);
  outline: none;
}
textarea{ min-height: 120px; resize: vertical; }
input:focus, select:focus, textarea:focus{
  border-color: rgba(14,165,166,0.55);
  box-shadow: 0 0 0 4px rgba(14,165,166,0.12);
}

/* NOTICE */
.notice{
  border: 1px dashed rgba(245,158,11,0.55);
  background: rgba(245,158,11,0.10);
  border-radius: 14px;
  padding: 12px 14px;
  color: rgba(15,23,42,0.85);
  font-size: 13px;
  line-height:1.65;
}

/* FOOTER */
.footer{
  border-top: 1px solid rgba(15,23,42,0.10);
  padding: 28px 0;
  color: rgba(15,23,42,0.55);
  font-size: 13px;
}
.footer-grid{
  display:flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items:center;
  justify-content: space-between;
}
.footer a{ color: rgba(15,23,42,0.55); }
.footer a:hover{ color: rgba(15,23,42,0.78); }

/* BADGE */
.badge{
  display:inline-flex; align-items:center; gap: 8px;
  padding: 7px 10px;
  border-radius: 999px;
  border: 1px solid rgba(15,23,42,0.10);
  background: rgba(255,255,255,0.78);
  color: rgba(15,23,42,0.66);
  font-size: 12px;
}

/* RESPONSIVE */
@media (max-width: 900px){
  .hero-grid{ grid-template-columns: 1fr; }
  .kpis{ grid-template-columns: 1fr; }
  .grid3{ grid-template-columns: 1fr; }
  .split{ grid-template-columns: 1fr; }
  .menu, .nav-cta{ display:none; }
  .hamburger{ display:inline-flex; align-items:center; justify-content:center; }
  .mobile-panel.show{ display:block; }
}