@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;600;800&display=swap');

:root {
    --primary: #0066ff;
    --dark: #1d1d1f;
    --text-muted: #6e6e73;
    --bg: #ffffff;
    --card-bg: #f5f5f7;
    --transition: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; scroll-behavior: smooth; }
body { 
    font-family: 'Plus Jakarta Sans', sans-serif; 
    background: var(--bg); 
    color: var(--dark); 
    overflow-x: hidden;
}

/* --- Animasyon Tanımları --- */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slideInRight {
    from { opacity: 0; transform: translateX(-20px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes navBlur {
    from { backdrop-filter: blur(0px); background: rgba(255,255,255,0); }
    to { backdrop-filter: blur(20px); background: rgba(255,255,255,0.85); }
}

/* --- Navigasyon --- */
nav {
    display: flex; justify-content: space-between; align-items: center;
    padding: 0 8%; height: 80px; position: fixed; width: 100%; top: 0;
    z-index: 1000;
    animation: navBlur 1s forwards;
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

.logo { 
    font-size: 1.5rem; font-weight: 800; color: var(--dark); text-decoration: none;
    animation: slideInRight 0.8s ease;
}

.nav-links { display: flex; list-style: none; gap: 35px; }
.nav-links a { 
    text-decoration: none; color: var(--dark); font-size: 0.95rem; font-weight: 600; 
    opacity: 0.7; transition: var(--transition);
}
.nav-links a:hover { opacity: 1; color: var(--primary); transform: translateY(-2px); }

/* --- Section & İçerik --- */
section { 
    padding: 160px 8% 80px; 
    min-height: 100vh;
    animation: fadeInUp 1s ease-out; /* Sayfa açılış animasyonu */
}

.header-box h1, .header-box h2 { 
    font-size: 3.5rem; font-weight: 800; letter-spacing: -2px; margin-bottom: 20px;
    animation: fadeInUp 0.8s ease-out;
}

.header-box p { 
    font-size: 1.25rem; color: var(--text-muted); 
    animation: fadeInUp 1s ease-out;
}

/* --- Kartlar (Hover Efektli) --- */
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 30px; }

.card { 
    background: var(--card-bg); padding: 50px; border-radius: 32px; 
    border: 1px solid transparent;
    transition: var(--transition);
}

.card:hover { 
    transform: translateY(-15px) scale(1.02); 
    background: #ffffff;
    box-shadow: 0 30px 60px rgba(0,0,0,0.1);
    border-color: var(--primary);
}

/* --- Butonlar --- */
.btn-main {
    display: inline-block;
    background: var(--dark); color: white; padding: 18px 45px; 
    border-radius: 50px; text-decoration: none; font-weight: 600;
    transition: var(--transition);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.btn-main:hover {
    background: var(--primary);
    transform: translateY(-3px);
    box-shadow: 0 15px 30px rgba(0, 102, 255, 0.3);
}

/* --- İletişim Formu --- */
input, textarea { 
    transition: var(--transition);
    border: 2px solid transparent;
}

input:focus, textarea:focus { 
    background: white;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.1);
}

/* --- Footer --- */
footer { 
    padding: 80px 8%; text-align: center; 
    background: #fafafa; border-top: 1px solid #eee;
    opacity: 0;
    animation: fadeInUp 1s ease-out 0.5s forwards; /* Gecikmeli belirme */

}


/* Masaüstü Stilleri */
.navbar { display: flex; justify-content: space-between; align-items: center; padding: 1rem; }
.nav-list { display: flex; list-style: none; }
.menu-toggle { display: none; cursor: pointer; } /* Masaüstünde gizli */

/* Mobil Stilleri (768px altı) */
@media (max-width: 768px) {
  .menu-toggle { display: block; } /* Hamburger ikonunu göster */

  .nav-list {
    position: absolute;
    top: 70px;
    left: -100%; /* Menüyü ekranın soluna gizle */
    flex-direction: column;
    background-color: #333;
    width: 100%;
    transition: 0.3s;
  }

  .nav-list.active {
    left: 0; /* Menü açıldığında ekranı kapla */
  }
}