/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;600;700&display=swap');

body {
  font-family: 'Poppins', 'Segoe UI', Arial, sans-serif;
  background: #f7fdfd;
  color: #222;
  margin: 0;
  padding: 0;
}

h1, h2, h3, h4 {
  font-weight: 700;
  letter-spacing: 0.5px;
  margin-bottom: 12px;
}

h2 {
  border-bottom: 3px solid #00b7b2;
  display: inline-block;
  padding-bottom: 4px;
  margin-bottom: 24px;
}

a {
  color: #00b7b2;
  text-decoration: none;
  transition: color 0.2s;
}
a:hover {
  color: #009d99;
}

.btn, .store {
  background: linear-gradient(90deg, #00b7b2 60%, #009d99 100%);
  color: white !important;
  border: none;
  border-radius: 32px;
  padding: 14px 32px;
  font-size: 18px;
  font-weight: 600;
  box-shadow: 0 4px 16px rgba(0,183,178,0.10);
  cursor: pointer;
  transition: background 0.3s, transform 0.2s, box-shadow 0.2s;
  margin: 8px 0;
  display: inline-block;
}
.btn:hover, .store:hover {
  background: linear-gradient(90deg, #009d99 60%, #00b7b2 100%);
  transform: scale(1.06);
  box-shadow: 0 8px 24px rgba(0,183,178,0.18);
}

.logo-png {
  width: 160px;
  height: auto;
  margin: 0 0 8px 0;
}

header {
  background: white;
  box-shadow: 0 2px 12px rgba(0,183,178,0.06);
  padding: 18px 0 10px 0;
  position: sticky;
  top: 0;
  z-index: 10;
}
.desktop-nav {
  display: flex;
  gap: 32px;
  justify-content: center;
  align-items: center;
  margin-top: 8px;
}
.menu-link {
  font-size: 18px;
  font-weight: 600;
  color: #009d99;
  padding: 6px 18px;
  border-radius: 20px;
  transition: background 0.2s, color 0.2s;
}
.menu-link.active, .menu-link:hover {
  background: #e0f7f6;
  color: #00b7b2;
}

.hero {
  background: linear-gradient(135deg, #00b7b2 0%, #009d99 100%);
  color: white;
  padding: 80px 0 60px 0;
  text-align: center;
  max-width: 100vw;
  margin: 0 auto;
  box-sizing: border-box;
}

.avantajlar, .sss {
  padding: 60px 0;
}

.avantajlar > div, .hakkimizda > div, .sss > div, footer > div, .esnaftan-footer > div {
  justify-content: center;
  margin: 0 auto;
  max-width: 1200px;
}

.avantajlar .card, .sss details, .hakkimizda .card {
  background: white;
  border-radius: 20px;
  box-shadow: 0 4px 24px rgba(0,183,178,0.10);
  padding: 32px;
  width: 320px;
  transition: box-shadow 0.2s, transform 0.2s;
  position: relative;
  margin: 0 16px 32px 16px;
  max-width: 400px;
  box-sizing: border-box;
}
.avantajlar .card:hover, .sss details[open], .hakkimizda .card:hover {
  box-shadow: 0 8px 32px rgba(0,183,178,0.18);
  transform: translateY(-6px) scale(1.03);
}

.sss details {
  margin-bottom: 18px;
  border-radius: 12px;
  background: #f7fdfd;
  padding: 18px 24px;
  width: 100%;
  box-sizing: border-box;
  cursor: pointer;
  border: 1px solid #e0f7f6;
}
.sss summary {
  font-size: 20px;
  color: #009d99;
  font-weight: 600;
  outline: none;
}
.sss details[open] summary {
  color: #00b7b2;
}

footer {
  background: #00b7b2;
  color: white;
  padding: 40px 0 0 0;
  margin-top: 40px;
}
footer h4 {
  font-size: 20px;
  margin-bottom: 12px;
  font-weight: 600;
}
footer a {
  color: white;
  opacity: 0.85;
  transition: opacity 0.2s, background 0.2s;
}
footer a:hover {
  opacity: 1;
  background: #009d99;
  border-radius: 50%;
}
footer .social-links a {
  background: #fff;
  color: #00b7b2 !important;
  border-radius: 50%;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-right: 8px;
  box-shadow: 0 2px 8px rgba(0,183,178,0.10);
  transition: background 0.2s, color 0.2s, transform 0.2s;
  text-decoration: none;
}
footer .social-links a:hover {
  background: #00b7b2;
  color: #fff !important;
  transform: scale(1.12);
  text-decoration: none;
}

/* Hamburger Menü ve Mobil Sidebar */
.mobile-menu-toggle {
  display: none;
  position: absolute;
  top: 24px;
  right: 24px;
  z-index: 1001;
  background: none;
  border: none;
  font-size: 32px;
  color: #00b7b2;
  cursor: pointer;
}
.mobile-sidebar {
  display: none;
  position: fixed;
  top: 0;
  right: 0;
  width: 80vw;
  max-width: 320px;
  height: 100vh;
  background: #fff;
  box-shadow: -2px 0 24px rgba(0,183,178,0.10);
  z-index: 1100;
  flex-direction: column;
  padding: 40px 24px 24px 24px;
  transition: transform 0.3s cubic-bezier(.23,1.01,.32,1);
  transform: translateX(100%);
}
.mobile-sidebar.active {
  display: flex;
  transform: translateX(0);
}
.mobile-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0,0,0,0.25);
  z-index: 1099;
}
.mobile-overlay.active {
  display: block;
}
.close-sidebar {
  position: absolute;
  top: 18px;
  right: 18px;
  font-size: 32px;
  color: #00b7b2;
  background: none;
  border: none;
  cursor: pointer;
}
.mobile-sidebar .menu-link {
  display: block;
  font-size: 22px;
  color: #009d99;
  margin: 18px 0;
  padding: 12px 0;
  border-radius: 12px;
  text-align: left;
  font-weight: 600;
  background: none;
  border: none;
}
.mobile-sidebar .menu-link.active, .mobile-sidebar .menu-link:hover {
  background: #e0f7f6;
  color: #00b7b2;
}

/* Responsive Tasarım */
@media (max-width: 900px) {
  .avantajlar > div, .hakkimizda > div, .sss > div, footer > div, .esnaftan-footer > div {
    flex-direction: column;
    align-items: center;
    gap: 24px;
    justify-content: center !important;
    margin: 0 auto !important;
    max-width: 98vw !important;
  }
  .avantajlar .card, .hakkimizda .card, .sss details {
    width: 95%;
    min-width: 0;
    max-width: 98vw;
    padding: 12px 4vw;
    margin: 0 4vw 24px 4vw;
  }
  .logo-png {
    width: 120px;
  }
  .desktop-nav {
    display: none;
  }
  .mobile-menu-toggle {
    display: block;
  }
  footer > div, .esnaftan-footer > div {
    gap: 30px;
    padding: 0 15px;
  }
  .footer-section {
    text-align: center;
  }
  .footer-section p {
    font-size: 0.9rem;
  }
}
@media (max-width: 600px) {
  .hero {
    padding: 36px 0 18px 0;
  }
  h1 {
    font-size: 24px;
    line-height: 1.2;
  }
  h2 {
    font-size: 18px;
  }
  .btn, .store {
    font-size: 15px;
    padding: 8px 12px;
  }
  .avantajlar .card, .hakkimizda .card, .sss details {
    width: 98vw;
    max-width: 99vw;
    padding: 12px 4vw;
    margin: 0 auto 16px auto;
  }
  footer > div, .esnaftan-footer > div {
    flex-direction: column !important;
    align-items: center !important;
    text-align: center;
    gap: 12px !important;
  }
  .social-links {
    justify-content: center !important;
    margin: 0 auto;
  }
}

/* 4K ve Ultra Geniş Ekranlar (2560px+) */
@media (min-width: 2560px) {
  .hero {
    padding: 180px 0 120px 0;
  }
  h1 {
    font-size: 80px;
  }
  h2 {
    font-size: 48px;
  }
  .btn, .store {
    font-size: 28px;
    padding: 22px 60px;
  }
  .avantajlar .card, .hakkimizda .card, .sss details {
    width: 480px;
    padding: 48px;
  }
}

/* 3K Ekranlar (1920px - 2559px) */
@media (min-width: 1920px) and (max-width: 2559px) {
  .hero {
    padding: 140px 0 100px 0;
  }
  h1 {
    font-size: 64px;
  }
  h2 {
    font-size: 36px;
  }
  .btn, .store {
    font-size: 22px;
    padding: 18px 44px;
  }
  .avantajlar .card, .hakkimizda .card, .sss details {
    width: 400px;
    padding: 40px;
  }
}

/* 2K Ekranlar (1440px - 1919px) */
@media (min-width: 1440px) and (max-width: 1919px) {
  .hero {
    padding: 110px 0 80px 0;
  }
  h1 {
    font-size: 56px;
  }
  h2 {
    font-size: 32px;
  }
  .btn, .store {
    font-size: 20px;
    padding: 16px 36px;
  }
  .avantajlar .card, .hakkimizda .card, .sss details {
    width: 360px;
    padding: 36px;
  }
}

/* 1K Ekranlar (1200px - 1439px) */
@media (min-width: 1200px) and (max-width: 1439px) {
  .hero {
    padding: 90px 0 60px 0;
  }
  h1 {
    font-size: 44px;
  }
  h2 {
    font-size: 28px;
  }
  .btn, .store {
    font-size: 18px;
    padding: 14px 28px;
  }
  .avantajlar .card, .hakkimizda .card, .sss details {
    width: 320px;
    padding: 28px;
  }
}

/* Animasyonlar */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: none; }
}
.avantajlar .card, .hakkimizda .card, .sss details {
  animation: fadeInUp 0.7s cubic-bezier(.23,1.01,.32,1) both;
}

@media (min-width: 901px) {
  header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 0 10px 0;
    position: sticky;
    top: 0;
    z-index: 10;
    background: white;
    box-shadow: 0 2px 12px rgba(0,183,178,0.06);
  }
  .logo {
    margin-left: 40px;
  }
  .desktop-nav {
    display: flex !important;
    gap: 32px;
    justify-content: center;
    align-items: center;
    margin-top: 8px;
  }
  .mobile-menu-toggle, .mobile-sidebar, .mobile-overlay {
    display: none !important;
  }
  .hero {
    padding: 80px 0 60px 0;
    text-align: center;
    max-width: 1100px;
    margin: 0 auto;
    box-sizing: border-box;
  }
  .avantajlar > div, .hakkimizda > div, .sss > div, footer > div, .esnaftan-footer > div {
    flex-direction: row !important;
    align-items: flex-start !important;
    text-align: left;
    gap: 40px !important;
    justify-content: center !important;
    margin: 0 auto !important;
    max-width: 1200px !important;
  }
  .avantajlar .card, .hakkimizda .card, .sss details {
    width: 360px;
    max-width: 360px;
    padding: 32px;
    margin: 0 24px 40px 24px;
  }
  footer > div, .esnaftan-footer > div {
    flex-direction: row !important;
    align-items: flex-start !important;
    text-align: left;
    gap: 40px !important;
  }
  .social-links {
    justify-content: flex-start !important;
    margin: 0;
  }
}