*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  background: radial-gradient(circle at top left, #182635 0, #050711 55%);
  color: #f7fafc;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  display: block;
}

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

button {
  font-family: inherit;
}

.site-header {
  /* Header artık sabit değil, sayfayla birlikte kayıyor */
  position: static;
  z-index: 20;
  backdrop-filter: blur(16px);
  background: linear-gradient(
    to bottom,
    rgba(5, 7, 17, 0.96),
    rgba(5, 7, 17, 0.86),
    transparent
  );
}

.navbar {
  max-width: 1120px;
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.navbar__brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.navbar__logo {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  object-fit: contain;
}

.navbar__title {
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.9rem;
  color: #e2fbe9;
}

.navbar__links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  font-size: 0.9rem;
}

.navbar__links a {
  position: relative;
  color: #cbd5f5;
  transition: color 0.2s ease;
}

.navbar__links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.35rem;
  width: 0;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, #3be7a4, #31c3ff);
  transition: width 0.18s ease;
}

.navbar__links a:hover::after {
  width: 100%;
}

.navbar__links a:hover {
  color: #f7fafc;
}

.navbar__lang {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.15rem;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.9);
  border: 1px solid rgba(56, 189, 248, 0.35);
}

.lang-btn {
  border: none;
  padding: 0.25rem 0.7rem;
  border-radius: 999px;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  cursor: pointer;
  background: transparent;
  color: #9ca3af;
  transition: background 0.18s ease, color 0.18s ease;
}

.lang-btn--active {
  background: linear-gradient(90deg, #22c55e, #22d3ee);
  color: #020617;
}

.navbar__toggle {
  display: none;
  flex-direction: column;
  gap: 0.18rem;
  width: 1.5rem;
  background: transparent;
  border: none;
  cursor: pointer;
}

.navbar__toggle span {
  height: 2px;
  width: 100%;
  border-radius: 999px;
  background: #e5e7eb;
}

.hero {
  max-width: 1120px;
  margin: 0 auto;
  padding: 3rem 1.5rem 4rem;
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(0, 1.1fr);
  gap: 3rem;
  align-items: center;
}

.hero__eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.75rem;
  color: #a5f3fc;
}

.hero__title {
  margin: 0.5rem 0;
  font-size: clamp(2.3rem, 4vw, 3.1rem);
  line-height: 1.1;
  background: linear-gradient(120deg, #e5f9ff, #a7f3d0);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero__subtitle {
  margin: 0.75rem 0 1.5rem;
  color: #cbd5f5;
  max-width: 32rem;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.7rem 1.4rem;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 500;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease,
    border-color 0.15s ease;
}

.btn--primary {
  background: linear-gradient(120deg, #22c55e, #22d3ee);
  color: #020617;
  box-shadow: 0 18px 40px rgba(34, 211, 238, 0.25);
}

.btn--primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 20px 50px rgba(34, 197, 94, 0.35);
}

.btn--ghost {
  background: rgba(15, 23, 42, 0.7);
  border-color: rgba(148, 163, 184, 0.6);
  color: #e5e7eb;
}

.btn--ghost:hover {
  border-color: rgba(34, 211, 238, 0.9);
  background: rgba(15, 23, 42, 0.95);
}

.hero__highlights {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: #9ca3af;
}

.hero__highlights span {
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid rgba(45, 212, 191, 0.4);
}

.hero__visual {
  display: flex;
  justify-content: center;
}

.hero__logo-card {
  position: relative;
  padding: 2rem;
  border-radius: 24px;
  background: radial-gradient(circle at top, #0b1724, #020617);
  border: 1px solid rgba(56, 189, 248, 0.35);
  box-shadow: 0 25px 70px rgba(15, 23, 42, 0.9);
  min-width: 260px;
  max-width: 320px;
}

.hero__logo-card::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  background: conic-gradient(
    from 140deg,
    rgba(45, 212, 191, 0.1),
    rgba(56, 189, 248, 0.25),
    transparent,
    transparent
  );
  opacity: 0.8;
  z-index: -1;
}

.hero__logo-image {
  width: 100%;
  filter: drop-shadow(0 14px 30px rgba(34, 197, 94, 0.55));
}

.section {
  max-width: 1120px;
  margin: 0 auto;
  padding: 2.75rem 1.5rem;
}

.section__header {
  max-width: 640px;
  margin-bottom: 1.75rem;
}

.section__header h2 {
  margin: 0 0 0.6rem;
  font-size: 1.5rem;
}

.section__header p {
  margin: 0;
  color: #9ca3af;
}

.section--about {
  border-top: 1px solid rgba(30, 64, 175, 0.8);
}

.section__body--two-column {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.75rem;
  color: #e5e7eb;
}

.section--services {
  border-top: 1px solid rgba(30, 64, 175, 0.7);
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.5rem;
}

.cards--services {
  margin-top: 1.5rem;
}

.card {
  padding: 1.35rem 1.3rem;
  border-radius: 18px;
  background: radial-gradient(circle at top left, #0b1220, #020617);
  border: 1px solid rgba(55, 65, 81, 0.9);
  box-shadow: 0 16px 40px rgba(15, 23, 42, 0.85);
}

.card h3 {
  margin: 0 0 0.6rem;
  font-size: 1rem;
}

.card p {
  margin: 0;
  color: #9ca3af;
  font-size: 0.9rem;
}

.card--compact {
  padding: 1.1rem 1.1rem;
}

.section--technologies {
  border-top: 1px solid rgba(30, 64, 175, 0.7);
}

.tech-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1.4rem;
}

.tech-chip {
  padding: 0.35rem 0.8rem;
  border-radius: 999px;
  font-size: 0.8rem;
  color: #e5e7eb;
  background: rgba(15, 23, 42, 0.9);
  border: 1px solid rgba(37, 99, 235, 0.8);
}

.section--why {
  border-top: 1px solid rgba(30, 64, 175, 0.7);
}

.section--contact {
  border-top: 1px solid rgba(30, 64, 175, 0.7);
  padding-bottom: 3.5rem;
}

.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.4fr);
  gap: 2rem;
  align-items: flex-start;
}

.contact-info__name {
  margin: 0.25rem 0;
  font-weight: 600;
}

.contact-info__phone,
.contact-info__email {
  margin: 0.25rem 0 0;
  color: #cbd5f5;
}

.contact-info__phone a,
.contact-info__email a {
  color: #5eead4;
}

.contact-form {
  padding: 1.5rem 1.4rem;
  border-radius: 18px;
  background: radial-gradient(circle at top left, #020617, #020617);
  border: 1px solid rgba(55, 65, 81, 0.9);
  box-shadow: 0 16px 40px rgba(15, 23, 42, 0.9);
}

.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.35rem;
  font-size: 0.85rem;
  color: #e5e7eb;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.55rem 0.7rem;
  border-radius: 10px;
  border: 1px solid rgba(30, 64, 175, 0.85);
  background: rgba(15, 23, 42, 0.95);
  color: #e5e7eb;
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease,
    background 0.15s ease;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: rgba(34, 211, 238, 0.95);
  box-shadow: 0 0 0 1px rgba(34, 211, 238, 0.4);
  background: #020617;
}

.form-note {
  margin-top: 0.6rem;
  font-size: 0.75rem;
  color: #9ca3af;
}

.site-footer {
  border-top: 1px solid rgba(30, 64, 175, 0.7);
  background: #020617;
}

.site-footer__inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 1.3rem 1.5rem 1.7rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  color: #9ca3af;
}

.site-footer__links {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.site-footer__links a {
  color: #e5e7eb;
  font-size: 0.8rem;
}

.site-footer__links a:hover {
  text-decoration: underline;
}

@media (max-width: 900px) {
  .hero {
    grid-template-columns: minmax(0, 1fr);
    gap: 2.25rem;
  }

  .hero__visual {
    order: -1;
  }

  .section__body--two-column {
    grid-template-columns: minmax(0, 1fr);
  }

  .cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .contact-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 720px) {
  .navbar {
    padding-inline: 1rem;
  }

  .navbar__toggle {
    display: flex;
  }

  .navbar__links {
    position: absolute;
    left: 0;
    right: 0;
    top: 64px;
    padding: 0.75rem 1.2rem 1rem;
    flex-direction: column;
    align-items: flex-start;
    background: rgba(15, 23, 42, 0.98);
    border-bottom: 1px solid rgba(30, 64, 175, 0.85);
    transform-origin: top;
    transform: scaleY(0.6);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.16s ease, transform 0.16s ease;
  }

  .navbar__links--open {
    opacity: 1;
    pointer-events: auto;
    transform: scaleY(1);
  }

  .hero {
    padding: 2.4rem 1rem 3.1rem;
  }

  .cards {
    grid-template-columns: minmax(0, 1fr);
  }

  .site-footer__inner {
    padding-inline: 1rem;
  }
}