/* ===== Team Turquoise ===== */
:root {
  --turquoise: #40E0D0;
  --turquoise-dark: #17b8a6;
  --bg: #0a1628;
  --bg-alt: #0e1f36;
  --card: #13294b;
  --text: #e8f1f5;
  --text-dim: #9db4c7;
  --radius: 16px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
}

h1, h2, h3, h4, .logo-text {
  font-family: 'Space Grotesk', sans-serif;
  line-height: 1.2;
}

.container {
  width: min(1100px, 92%);
  margin: 0 auto;
}

.accent { color: var(--turquoise); }

/* ===== Navbar ===== */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 18px 0;
  transition: background .3s, padding .3s, box-shadow .3s;
}
.navbar.scrolled {
  background: rgba(10, 22, 40, .92);
  backdrop-filter: blur(12px);
  padding: 12px 0;
  box-shadow: 0 4px 24px rgba(0,0,0,.35);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text);
  font-weight: 700;
  font-size: 1.15rem;
}
.logo-mark {
  width: 38px; height: 38px;
  display: grid;
  place-items: center;
  background: var(--turquoise);
  color: var(--bg);
  border-radius: 10px;
  font-weight: 700;
  font-size: 1.2rem;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav-links a {
  color: var(--text-dim);
  text-decoration: none;
  font-weight: 500;
  font-size: .95rem;
  transition: color .2s;
}
.nav-links a:hover { color: var(--turquoise); }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.hamburger span {
  width: 24px; height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: .3s;
}

/* ===== Buttons ===== */
.btn {
  display: inline-block;
  background: var(--turquoise);
  color: var(--bg) !important;
  padding: 13px 28px;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 600;
  font-size: .95rem;
  transition: transform .2s, box-shadow .2s, background .2s;
}
.btn:hover {
  background: var(--turquoise-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(64, 224, 208, .25);
}
.btn-outline {
  background: transparent;
  color: var(--turquoise) !important;
  border: 1.5px solid var(--turquoise);
}
.btn-outline:hover {
  background: rgba(64, 224, 208, .1);
  box-shadow: none;
}
.btn-small { padding: 9px 20px; }

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background:
    radial-gradient(ellipse 60% 50% at 70% 20%, rgba(64,224,208,.12), transparent),
    var(--bg);
}
.hero-glow {
  position: absolute;
  width: 500px; height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(64,224,208,.15), transparent 70%);
  top: -150px; right: -100px;
  pointer-events: none;
}
.hero-content { padding: 140px 0 80px; }
.hero-kicker {
  display: inline-block;
  background: rgba(64,224,208,.12);
  border: 1px solid rgba(64,224,208,.3);
  color: var(--turquoise);
  padding: 6px 16px;
  border-radius: 999px;
  font-size: .85rem;
  font-weight: 600;
  margin-bottom: 24px;
}
.hero h1 {
  font-size: clamp(2.4rem, 6vw, 4rem);
  font-weight: 700;
  max-width: 700px;
  margin-bottom: 20px;
}
.hero-sub {
  color: var(--text-dim);
  font-size: 1.15rem;
  max-width: 560px;
  margin-bottom: 36px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 64px;
}
.hero-stats {
  display: flex;
  gap: 56px;
  flex-wrap: wrap;
}
.stat-num {
  display: block;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--turquoise);
}
.stat-num::after { content: '+'; }
.stat-label {
  color: var(--text-dim);
  font-size: .9rem;
}

/* ===== Sections ===== */
.section { padding: 96px 0; }
.section-alt { background: var(--bg-alt); }
.section-kicker {
  color: var(--turquoise);
  font-weight: 600;
  font-size: .9rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 10px;
}
.section h2 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  margin-bottom: 40px;
}
.section-sub {
  color: var(--text-dim);
  max-width: 560px;
  margin: -24px 0 40px;
}

/* ===== Cards (Hakkımızda) ===== */
.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 20px;
}
.card {
  background: var(--card);
  border: 1px solid rgba(64,224,208,.1);
  border-radius: var(--radius);
  padding: 32px 26px;
  transition: transform .25s, border-color .25s;
}
.card:hover {
  transform: translateY(-6px);
  border-color: rgba(64,224,208,.4);
}
.card-icon { font-size: 2rem; margin-bottom: 16px; }
.card h3 { margin-bottom: 10px; font-size: 1.2rem; }
.card p { color: var(--text-dim); font-size: .95rem; }

/* ===== Robotlar ===== */
.robots-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}
.robot-card {
  background: var(--card);
  border: 1px solid rgba(64,224,208,.1);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform .25s, border-color .25s;
}
.robot-card:hover {
  transform: translateY(-6px);
  border-color: rgba(64,224,208,.4);
}
.robot-img {
  height: 180px;
  display: grid;
  place-items: center;
  font-size: 4rem;
  background: linear-gradient(135deg, rgba(64,224,208,.15), rgba(64,224,208,.03));
}
.robot-body { padding: 24px; }
.robot-year {
  color: var(--turquoise);
  font-size: .8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
}
.robot-body h3 { margin: 8px 0 10px; }
.robot-body p { color: var(--text-dim); font-size: .95rem; }

/* ===== Takım ===== */
.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 24px;
  text-align: center;
}
.avatar {
  width: 90px; height: 90px;
  margin: 0 auto 14px;
  display: grid;
  place-items: center;
  font-size: 2.4rem;
  background: var(--card);
  border: 2px solid rgba(64,224,208,.25);
  border-radius: 50%;
  transition: border-color .25s, transform .25s;
}
.member:hover .avatar {
  border-color: var(--turquoise);
  transform: scale(1.06);
}
.member h4 { font-size: 1rem; margin-bottom: 4px; }
.member p { color: var(--text-dim); font-size: .85rem; }

/* ===== Sponsorlar ===== */
.sponsors-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  margin-bottom: 48px;
}
.sponsor {
  background: var(--card);
  border: 1px dashed rgba(64,224,208,.3);
  border-radius: var(--radius);
  padding: 40px 20px;
  text-align: center;
  color: var(--text-dim);
  font-weight: 500;
}
.sponsor-cta {
  text-align: center;
  padding: 40px;
  background: linear-gradient(135deg, rgba(64,224,208,.12), rgba(64,224,208,.04));
  border-radius: var(--radius);
}
.sponsor-cta p {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 20px;
}

/* ===== İletişim ===== */
.contact-wrap { text-align: center; }
.contact-wrap .section-sub { margin-left: auto; margin-right: auto; }
.contact-links {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}
.contact-item {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--card);
  border: 1px solid rgba(64,224,208,.15);
  border-radius: 12px;
  padding: 14px 24px;
  color: var(--text);
  text-decoration: none;
  font-weight: 500;
  transition: border-color .2s, transform .2s;
}
.contact-item:hover {
  border-color: var(--turquoise);
  transform: translateY(-3px);
}

/* ===== Footer ===== */
.footer {
  border-top: 1px solid rgba(64,224,208,.1);
  padding: 28px 0;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  color: var(--text-dim);
  font-size: .9rem;
}

/* ===== Scroll animasyonu ===== */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .6s ease, transform .6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: none;
}

/* ===== Mobil ===== */
@media (max-width: 768px) {
  .hamburger { display: flex; }
  .nav-links {
    position: fixed;
    top: 62px; left: 0; right: 0;
    flex-direction: column;
    background: rgba(10, 22, 40, .97);
    backdrop-filter: blur(12px);
    padding: 28px 0;
    gap: 20px;
    transform: translateY(-130%);
    transition: transform .3s ease;
  }
  .nav-links.open { transform: none; }
  .hero-stats { gap: 32px; }
}