@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@700;800&family=Inter:wght@400;500;600&family=Poppins:wght@600;700&display=swap');

:root {
  --navy: #003087;
  --turkuaz: #00b5e2;
  --gold: #d4af37;
  --light: #f8f9fa;
  --gray: #6c757d;
  --darkgray: #333;
}

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

body {
  font-family: 'Inter', sans-serif;
  line-height: 1.6;
  color: #333;
  background: white;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 800;
  color: var(--navy);
}

.poppins {
  font-family: 'Poppins', sans-serif;
}

/* HEADER & NAV */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  transition: all 0.3s;
  box-shadow: 0 2px 20px rgba(0,0,0,0.1);
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 5%;
  max-width: 1400px;
  margin: auto;
}

.logo img {
  height: 50px;
}

.nav-links {
  display: flex;
  gap: 2.5rem;
}

.nav-links a {
  text-decoration: none;
  color: var(--navy);
  font-weight: 600;
  position: relative;
  transition: 0.3s;
}

.nav-links a::after {
  content: '';
  position: absolute;
  width: 0;
  height: 3px;
  bottom: -8px;
  left: 50%;
  background: var(--turkuaz);
  transition: 0.3s;
  transform: translateX(-50%);
}

.nav-links a:hover::after { width: 100%; }
.nav-links a:hover { color: var(--turkuaz); }

.mobile-toggle {
  display: none;
  font-size: 1.8rem;
  cursor: pointer;
  color: var(--navy);
}

/* HERO */
.hero {
  height: 78vh;
  min-height: 560px;
  background: linear-gradient(rgba(0,0,0,0.52), rgba(0,0,0,0.52)), url('../assets/images/hero.jpg') center/cover no-repeat;
  background-attachment: fixed;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: white;
  position: relative;
}

.hero-content {
  max-width: 900px;
  padding: 2rem;
}

.hero h1 {
  font-size: 4.5rem;
  margin-bottom: 1rem;
  text-shadow: 0 2px 10px rgba(0,0,0,0.5);
}

.hero p {
  font-size: 1.4rem;
  margin: 1.5rem 0;
}

/* Butonlar */
.btn {
  display: inline-block;
  padding: 1rem 2.5rem;
  background: var(--turkuaz);
  color: white;
  text-decoration: none;
  border-radius: 50px;
  font-weight: 600;
  transition: 0.3s;
  margin: 0.5rem;
}

.btn:hover {
  background: var(--navy);
  transform: translateY(-3px);
  box-shadow: 0 10px 20px rgba(0,0,0,0.2);
}

.btn-secondary {
  background: transparent;
  border: 2px solid white;
}

.btn-secondary:hover {
  background: white;
  color: var(--navy);
}

/* Genel Section */
section {
  padding: 5rem 5%;
  max-width: 1400px;
  margin: auto;
}

.section-title {
  text-align: center;
  font-size: 2.8rem;
  margin-bottom: 3rem;
  color: var(--navy);
}

/* Hizmet & Kurs Kartları */
.services {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.service-card {
  background: white;
  padding: 2.5rem;
  border-radius: 15px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.1);
  text-align: center;
  transition: transform 0.4s ease;
  cursor: pointer;
}

.service-card:hover {
  transform: translateY(-15px);
}

.service-card i {
  font-size: 3.5rem;
  color: var(--turkuaz);
  margin-bottom: 1rem;
}

/* KURS SAYFASI ÖZEL KART EFEKTİ (scale hover) */
.service-card.kurs-card {
  transition: transform 0.3s ease;
}

.service-card.kurs-card:hover {
  transform: scale(0.95);
}

/* Kurs etiketi (Yakında Başlıyor vs.) */
.kurs-badge {
  display: inline-block;
  background: var(--gold);
  color: white;
  padding: 0.6rem 1.4rem;
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 600;
  margin-top: 1rem;
}

/* KURS BİLGİ KARTI – Neden Katılmalısınız? */
.kurs-info-container {
  display: flex;
  justify-content: center;
  padding: 2rem 0;
}

.kurs-info-card {
  background: white;
  padding: 3rem;
  border-radius: 15px;
  box-shadow: 0 8px 30px rgba(0,0,0,0.1);
  max-width: 900px;
  width: 95%;
  line-height: 1.8;
  text-align: left;
}

.kurs-info-card h2 {
  text-align: center;
  margin-bottom: 1.5rem;
  color: var(--navy);
}

.kurs-info-card ul {
  list-style: none;
  padding: 0;
  margin: 2rem 0;
}

.kurs-info-card ul li {
  margin-bottom: 1rem;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 1.05rem;
}

.kurs-info-card ul li i {
  color: var(--gold);
  font-size: 1.3rem;
  margin-top: 3px;
}

/* Altın Buton */
.gold-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--gold);
  color: white;
  text-decoration: none;
  padding: 14px 32px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 1.1rem;
  transition: all 0.3s;
  margin-top: 1.5rem;
}

.gold-btn:hover {
  background: #b8950e;
  transform: translateY(-3px);
  box-shadow: 0 10px 20px rgba(212, 175, 55, 0.3);
}

/* Referanslar */
.referanslar {
  background: var(--light);
  padding: 5rem 5%;
  text-align: center;
}

.ref-grid {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 6rem;
  flex-wrap: wrap;
  max-width: 1000px;
  margin: 0 auto;
}

.ref-grid img {
  height: 100px;
  max-width: 350px;
  object-fit: contain;
  filter: grayscale(100%);
  transition: all 0.4s ease;
}

.ref-grid img:hover {
  filter: grayscale(0);
  transform: translateY(-8px);
}

/* Footer */
footer {
  background: var(--navy);
  color: white;
  padding: 3rem 5% 1rem;
  text-align: center;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.social a {
  color: white;
  font-size: 1.8rem;
  margin: 0 1rem;
  transition: 0.3s;
}

.social a:hover {
  color: var(--turkuaz);
  transform: translateY(-5px);
}

/* RESPONSIVE */
@media (max-width: 768px) {
  .hero h1 { font-size: 3rem; }
  .hero p { font-size: 1.2rem; }
  .section-title { font-size: 2.4rem; }

  .nav-links {
    position: fixed;
    top: 70px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 70px);
    background: white;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    padding-top: 4rem;
    transition: 0.4s ease;
    box-shadow: 5px 0 20px rgba(0,0,0,0.1);
  }

  .nav-links.active { left: 0; }
  .mobile-toggle { display: block; }
}

@media (max-width: 640px) {
  .ref-grid { gap: 3rem; }
  .ref-grid img { height: 80px; }
}