/* Statik alt sayfalar için ortak site kabuğu (header, mobil menü, footer).
   landing.html ile aynı değerleri kullanır; landing kendi satır içi stilini korur. Yalnızca gereken parçalar alındı. */
:root {
  --bg: #05070b;
  --surface: rgba(11, 16, 25, 0.74);
  --surface-2: rgba(15, 22, 34, 0.88);
  --line: rgba(255, 255, 255, 0.09);
  --line-strong: rgba(255, 255, 255, 0.18);
  --text: #f5f7fb;
  --muted: #99a5b8;
  --dim: #5d687b;
  --cyan: #67e8f9;
  --blue: #60a5fa;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

:focus-visible {
  outline: 3px solid var(--cyan);
  outline-offset: 3px;
}

a {
  color: inherit;
  text-decoration: none;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background:
    radial-gradient(circle at 50% 20%, rgba(103, 232, 249, 0.12), transparent 45rem),
    radial-gradient(circle at 90% 10%, rgba(52, 211, 153, 0.08), transparent 50rem),
    radial-gradient(circle at 10% 30%, rgba(96, 165, 250, 0.08), transparent 40rem),
    radial-gradient(circle at 50% 80%, rgba(103, 232, 249, 0.04), transparent 50rem),
    linear-gradient(180deg, #020408 0%, #050a14 40%, #020408 100%);
  font-family: "Plus Jakarta Sans", system-ui, sans-serif;
  overflow-x: hidden;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 100;
  min-height: 44px;
  padding: 12px 16px;
  border-radius: 12px;
  background: #f5f7fb;
  color: #07111f;
  font-weight: 800;
  transform: translateY(-160%);
  transition: transform 160ms ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.page {
  position: relative;
  z-index: 1;
}

.container {
  width: min(1240px, calc(100vw - 44px));
  margin: 0 auto;
}

/* Header */
.nav {
  position: sticky;
  top: 14px;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-top: 14px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: rgba(5, 8, 14, 0.72);
  box-shadow: 0 18px 55px rgba(0, 0, 0, 0.36);
  backdrop-filter: blur(20px);
}

.nav.scrolled {
  background: rgba(4, 6, 11, 0.92);
  border-color: var(--line-strong);
}

.brand {
  display: flex;
  align-items: center;
  height: 38px;
}

.brand-logo {
  display: block;
  width: auto;
  height: 34px;
  object-fit: contain;
}

.nav-links {
  display: flex;
  gap: 23px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 600;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.045);
  color: var(--text);
  font-size: 13px;
  font-weight: 900;
  transition: 170ms ease;
  cursor: pointer;
}

.btn:hover {
  transform: translateY(-1px);
  border-color: var(--line-strong);
  background: rgba(255, 255, 255, 0.075);
}

.btn-primary {
  border-color: transparent;
  background: #f4f7fb;
  color: #07111f;
  box-shadow: 0 18px 50px rgba(255, 255, 255, 0.1);
}

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  padding: 6px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.05);
  cursor: pointer;
}

.hamburger span {
  display: block;
  width: 100%;
  height: 1.5px;
  background: var(--muted);
  border-radius: 2px;
  transition: 200ms ease;
}

.hamburger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

.mobile-menu {
  display: none;
  position: fixed;
  top: 72px;
  left: 14px;
  right: 14px;
  z-index: 49;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: rgba(5, 8, 14, 0.96);
  backdrop-filter: blur(24px);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.5);
}

.mobile-menu.open {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.mobile-menu a {
  padding: 12px 16px;
  border-radius: 12px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 600;
  transition: 150ms ease;
}

.mobile-menu a:hover,
.mobile-menu a.active {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
}

.mobile-menu .menu-divider {
  height: 1px;
  background: var(--line);
  margin: 4px 0;
}

.mobile-menu .menu-cta {
  margin-top: 4px;
  padding: 12px 16px;
  border-radius: 12px;
  background: #f4f7fb;
  color: #07111f;
  font-weight: 700;
  text-align: center;
}

/* Sayfa başlığı (landing bölüm başlığı ile aynı tipografi) */
.kicker {
  margin-bottom: 11px;
  color: var(--cyan);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.page-title {
  margin: 0;
  font-family: "Archivo", sans-serif;
  font-size: clamp(34px, 4vw, 58px);
  line-height: 1;
  letter-spacing: -0.064em;
  font-weight: 900;
}

.section-copy {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.76;
}

/* Footer */
footer {
  padding: 64px 0;
  border-top: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.2);
}

.footer-inner {
  max-width: 1152px;
  margin: 0 auto;
  padding: 0 24px;
}

.footer-brand {
  display: block;
  text-align: center;
  font-family: "Archivo", sans-serif;
  font-size: 20px;
  font-weight: 900;
  letter-spacing: -0.04em;
  margin-bottom: 24px;
  color: var(--text);
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
}

.footer-nav a {
  padding: 8px 20px;
  color: var(--dim);
  font-size: 14px;
  font-weight: 600;
  transition: 200ms ease;
}

.footer-nav a:hover,
.footer-nav a.active {
  color: var(--text);
}

.footer-social {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-top: 20px;
}

.footer-social a {
  color: var(--dim);
  transition: 200ms ease;
}

.footer-social a:hover {
  color: var(--text);
}

.footer-social svg {
  width: 20px;
  height: 20px;
}

.footer-copy {
  margin-top: 24px;
  text-align: center;
  font-size: 14px;
  color: var(--dim);
}

@media (max-width: 1100px) {
  .nav-links {
    display: none;
  }

  .hamburger {
    display: flex;
  }
}

@media (max-width: 720px) {
  .container {
    width: min(100vw - 24px, 1240px);
  }

  .nav-actions .btn:not(.btn-primary) {
    display: none;
  }

  .nav {
    top: 8px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .btn,
  .skip-link {
    transition: none;
  }

  .btn:hover {
    transform: none;
  }
}