/* --- TEMEL AYARLAR & RENKLER --- */
 :root {
   --koyu-yesil: #002802;
   --acik-yesil: #2E5A4E;
   --beyaz: #FFFFFF;
   --gri: #F4F7F6;
   --ana-renk: #00A651;
   --acik-renk: #00B59C;
   --koyu-renk: #111111;
   --bg-texture: #f8f9fa;
   --font: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
 }

 * {
   margin: 0;
   padding: 0;
   box-sizing: border-box;
   font-family: var(--font);
   scroll-behavior: smooth;
 }

 .mainpage {
   background-color: var(--beyaz);
   color: var(--koyu-renk);
   line-height: 1.6;
 }

 /* --- HEADER & NAVBAR --- */
 header {
   background-color: var(--koyu-yesil);
   position: fixed;
   width: 100%;
   top: 0;
   left: 0;
   z-index: 1000;
   box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
 }

 .navbar {
   display: flex;
   justify-content: space-between;
   align-items: center;
   max-width: 1200px;
   margin: 0 auto;
   padding: 20px;
 }

 .logo {
   color: var(--beyaz);
   font-size: 24px;
   font-weight: bold;
   letter-spacing: 1px;
 }

 .logo span {
   color: #A3C9A8;
 }

 .logo img {
   height: 50px;
   width: auto;
   display: block;
   transition: transform 0.3s ease;
 }

 .logo img:hover {
   transform: scale(1.05);
 }

 .nav-links {
   display: flex;
   list-style: none;
 }

 .nav-links li {
   margin-left: 30px;
 }

 .nav-links a {
   color: var(--beyaz);
   text-decoration: none;
   font-size: 16px;
   font-weight: 500;
   transition: color 0.3s ease;
 }

 .nav-links a:hover {
   color: #A3C9A8;
 }

 /* --- HERO (GİRİŞ) BÖLÜMÜ --- */
 #home {
   height: 100vh;
   background: linear-gradient(rgba(26, 60, 52, 0.7), rgba(26, 60, 52, 0.7)),
     url('https://images.unsplash.com/photo-1486406146926-c627a92ad1ab?q=80&w=2070') no-repeat center center/cover;
   display: flex;
   flex-direction: column;
   justify-content: center;
   align-items: center;
   text-align: center;
   color: var(--beyaz);
   padding: 0 20px;
 }

 #home h1 {
   font-size: 48px;
   margin-bottom: 20px;
   text-transform: uppercase;
 }

 #home p {
   font-size: 20px;
   margin-bottom: 30px;
   max-width: 600px;
 }

 .btn {
   background-color: var(--beyaz);
   color: var(--koyu-yesil);
   padding: 12px 30px;
   text-decoration: none;
   font-weight: bold;
   border-radius: 4px;
   transition: all 0.3s ease;
   border: 2px solid var(--beyaz);
 }

 .btn:hover {
   background-color: transparent;
   color: var(--beyaz);
 }

 /* --- GENEL BÖLÜM STİLLERİ --- */
 section {
   padding: 100px 20px 80px 20px;
   max-width: 1200px;
   margin: 0 auto;
 }

 .section-title {
   text-align: center;
   font-size: 36px;
   color: var(--koyu-yesil);
   margin-bottom: 50px;
   position: relative;
 }

 .section-title::after {
   content: '';
   display: block;
   width: 60px;
   height: 3px;
   background-color: var(--acik-yesil);
   margin: 10px auto 0 auto;
 }

 /* --- HAKKIMIZDA --- */
 .about-container {
   display: flex;
   align-items: center;
   gap: 50px;
 }

 .about-text {
   flex: 1;
 }

 .about-image {
   flex: 1;
 }

 .about-image img {
   width: 100%;
   border-radius: 8px;
   box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
 }

 /* --- PROJELERİMİZ --- */
 #projelerimiz {
   background-color: var(--gri);
   max-width: 100%;
 }

 .projects-content {
   max-width: 1200px;
   margin: 0 auto;
 }

 .grid-projeler {
   display: grid;
   grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
   gap: 20px;
 }

 .proje-card {
   background-color: var(--gri);
   padding: 25px;
   border-left: 4px solid var(--acik-renk);
   border-radius: 4px;
   display: block;
   cursor: pointer;
   text-decoration: none;
   transition: transform 0.3s ease;
 }

 .proje-card:hover {
   transform: translateY(-5px);
 }

 .proje-card h3 {
   font-size: 18px;
   color: var(--koyu-renk);
   margin-bottom: 5px;
 }

 .proje-card p {
   color: var(--ana-renk);
   font-size: 14px;
   font-weight: bold;
   text-transform: uppercase;
 }

 .services-wrapper {
   max-width: 1200px;
   margin: 0 auto;
 }

 .grid-3 {
   display: grid;
   grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
   gap: 30px;
 }

 .service-card {
   background-color: var(--beyaz);
   padding: 30px;
   border-radius: 6px;
   box-shadow: 0 2px 15px rgba(0, 0, 0, 0.05);
   transition: transform 0.3s ease;
   text-align: center;
 }

 .service-card:hover {
   transform: translateY(-5px);
 }

 .service-card h3 {
   color: var(--ana-renk);
   margin-bottom: 12px;
   font-size: 20px;
 }



 /* --- İLETİŞİM --- */
 .contact-container {
   display: flex;
   gap: 50px;
 }

 .contact-info {
   flex: 1;
 }

 .contact-info h3 {
   color: var(--koyu-yesil);
   margin-bottom: 15px;
 }

 /* --- FOOTER --- */
 .main-footer {
   background-color: var(--koyu-yesil);
   color: var(--beyaz);
   text-align: center;
   padding: 30px 20px;
   margin-top: 50px;
 }

 .project-body {
   font-family: 'Montserrat', sans-serif;
   background-color: var(--bg-texture);
   color: var(--koyu-renk);
   line-height: 1.6;
   padding-top: 80px;
 }

 /* --- Ana Konteynır --- */
 .project-container {
   width: 95%;
   max-width: 1100px;
   background: #ffffff;
   margin: 40px auto;
   padding: 50px;
   box-shadow: 0 15px 40px rgba(0, 0, 0, 0.05);
   border-radius: 12px;
 }

 .project-main h1 {
   color: var(--acik-renk);
   font-size: 2rem;
   text-transform: uppercase;
   letter-spacing: 1px;
   margin-bottom: 40px;
   border-left: 5px solid var(--acik-renk);
   padding-left: 20px;
 }

 .project-main h1 span {
   font-weight: 300;
   display: block;
   font-size: 1.2rem;
   color: var(--koyu-renk);
 }

 /* --- Galeri --- */
 .image-gallery {
   display: grid;
   grid-template-columns: repeat(3, 1fr);
   gap: 20px;
   margin-bottom: 50px;
 }

 .image-box {
   aspect-ratio: 1 / 1;
   overflow: hidden;
   border-radius: 8px;
   box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
   cursor: pointer;
 }

 .image-box img {
   width: 100%;
   height: 100%;
   object-fit: cover;
   transition: transform 0.5s ease;
 }

 .image-box:hover img {
   transform: scale(1.1);
 }

 /* --- Metin Alanı --- */
 .content-text {
   font-size: 1.1rem;
   font-weight: 400;
   color: #444;
   margin: 0 auto 50px auto;
   max-width: 900px;
   text-align: center;
   border-top: 1px solid #eee;
   padding-top: 30px;
 }

 /* --- Footer Alanı --- */
 .project-footer {
   display: flex;
   justify-content: space-between;
   align-items: center;
   border-top: 2px solid var(--bg-texture);
   padding-top: 30px;
 }

 .footer-left h2 {
   color: var(--acik-renk);
   font-size: 1.4rem;
   margin: 0;
   line-height: 1.3;
 }

 .footer-right h3 {
   font-size: 1.6rem;
   font-weight: 800;
 }

 .text-green {
   color: var(--acik-renk);
 }

 /* --- RESPONSIVE (MOBİL UYUMLULUK) --- */
 @media (max-width: 1000px) {

   .navbar {
     flex-direction: column;
     gap: 15px;
     padding: 15px;
   }

   .nav-links {
     padding: 0;
     justify-content: center;
     flex-wrap: wrap;
   }

   .nav-links li {
     margin: 5px 10px;
   }

   .nav-links a {
     white-space: nowrap;
     font-size: 14px;
   }

   .about-container,
   .contact-container {
     flex-direction: column;
   }

   #home h1 {
     font-size: 32px;
   }

   .project-container {
     padding: 25px;
     margin: 20px auto;
   }

   .image-gallery {
     grid-template-columns: 1fr;
   }

   .footer {
     flex-direction: column;
     text-align: center;
     gap: 30px;
   }

   .project-footer {
     flex-direction: column;
     gap: 20px;
     text-align: center;
   }

   .footer-left h2 {
     border-bottom: 2px solid var(--bg-texture);
     padding-bottom: 15px;
     width: 100%;
   }

   .footer-right h3 {
     font-size: 1.3rem;
   }

   .main h1 {
     font-size: 1.5rem;
   }
 }