/* Genel Ayarlar */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    color: #333;
    line-height: 1.6;
    scroll-behavior: smooth;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px 0;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
}

.btn {
    background-color: #F8B500; /* SBU logosundaki sarı renk */
    color: #333;
    padding: 12px 25px;
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
    transition: background-color 0.3s ease, transform 0.3s ease;
    display: inline-block;
    border: none;
    cursor: pointer;
}

.btn:hover {
    background-color: #e0a500;
    transform: translateY(-2px);
}

/* Header */
header {
    background-color: #fff;
    padding: 10px 0;
    border-bottom: 1px solid #eee;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo img {
    height: 80px; /* Logonun yüksekliğini ayarlayın */
    transition: transform 0.3s ease;
}

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

nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
}

nav ul li {
    margin-left: 25px;
}

nav ul li a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    padding: 5px 0;
    transition: color 0.3s ease, border-bottom 0.3s ease;
}

nav ul li a:hover,
nav ul li a.active {
    color: #F8B500;
    border-bottom: 2px solid #F8B500;
}

/* Hero Section */
.hero {
    background: url('hero-bg.jpg') no-repeat center center/cover;
    color: #fff;
    text-align: center;
    padding: 100px 0;
    min-height: 550px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.55); /* Koyu bir overlay */
}

.hero .container {
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-size: 3.5em;
    margin-bottom: 15px;
    color: #F8B500;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.hero h2 {
    font-size: 2em;
    margin-bottom: 30px;
    font-weight: 400;
}

.hero p {
    font-size: 1.15em;
    max-width: 800px;
    margin: 0 auto 40px auto;
    opacity: 0.9;
}

/* About Us Section */
.about-us {
    padding: 80px 0;
    background-color: #f9f9f9;
}

.about-us h2 {
    text-align: center;
    font-size: 2.8em;
    margin-bottom: 20px;
    color: #333;
}

.about-us h3 {
    font-size: 2em;
    color: #F8B500;
    margin-bottom: 25px;
    text-align: center;
}

.about-content {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 60px;
    margin-bottom: 60px;
}

.about-text {
    flex: 2;
    min-width: 300px;
    text-align: left;
}

.about-image {
    flex: 1;
    min-width: 250px;
    text-align: center;
}

.about-image img {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 8px 20px rgba(0,0,0,0.15);
}

.about-text p {
    margin-bottom: 15px;
    font-size: 1.05em;
    color: #555;
}

.values {
    text-align: center;
    margin-top: 50px;
}

.values h3 {
    color: #333;
    font-size: 2.2em;
    margin-bottom: 30px;
}

.values ul {
    list-style: none;
    padding: 0;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 25px;
}

.values ul li {
    background-color: #fff;
    padding: 25px 35px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
    display: flex;
    align-items: center;
    font-weight: bold;
    color: #444;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    font-size: 1.1em;
}

.values ul li:hover {
    transform: translateY(-7px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.12);
}

.values ul li i {
    color: #F8B500;
    margin-right: 12px;
    font-size: 1.3em;
}

/* Services Section */
.services {
    padding: 80px 0;
    background-color: #fff;
    text-align: center;
}

.services h2 {
    font-size: 2.8em;
    margin-bottom: 10px;
    color: #333;
}

.services h3 {
    font-size: 2em;
    color: #F8B500;
    margin-bottom: 60px;
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.service-item {
    background-color: #f9f9f9;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.06);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-align: center;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.service-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.1);
}

.service-icon {
    margin-bottom: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 120px; /* Görseli kapsayacak kadar yükseklik */
}

.service-icon img {
    max-width: 100%;
    max-height: 120px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.service-item h4 {
    font-size: 1.6em;
    margin-bottom: 15px;
    color: #444;
}

.service-item p {
    font-size: 1em;
    color: #666;
    line-height: 1.7;
    flex-grow: 1; /* Paragrafın esnek büyümesini sağlar */
}

/* References Section */
.references {
    padding: 80px 0;
    background-color: #f2f2f2;
    text-align: center;
}

.references h2 {
    font-size: 2.8em;
    margin-bottom: 10px;
    color: #333;
}

.references h3 {
    font-size: 2em;
    color: #F8B500;
    margin-bottom: 30px;
}

.references p {
    font-size: 1.1em;
    color: #555;
    margin-bottom: 50px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.reference-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 30px;
    justify-content: center;
    align-items: center;
}

.reference-item {
    background-color: #fff;
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 180px;
}

.reference-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 6px 15px rgba(0,0,0,0.1);
}

.reference-item a {
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
}

.reference-item img {
    max-width: 120px; /* Logo boyutunu ayarlayın */
    max-height: 80px;
    height: auto;
    margin-bottom: 15px;
    filter: grayscale(80%); /* Logoları biraz soluklaştır */
    transition: filter 0.3s ease;
}

.reference-item:hover img {
    filter: grayscale(0%); /* Hover'da renkli hale getir */
}

.reference-item span {
    font-size: 0.9em;
    color: #666;
    word-break: break-all; /* Uzun URL'ler için */
}

/* Contact Section */
.contact {
    padding: 80px 0;
    background-color: #fff;
    text-align: center;
}

.contact h2 {
    font-size: 2.8em;
    margin-bottom: 10px;
    color: #333;
}

.contact h3 {
    font-size: 2em;
    color: #F8B500;
    margin-bottom: 50px;
}

.contact-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 40px;
    margin-bottom: 60px;
    justify-content: center;
    align-items: flex-start;
}

.contact-info {
    flex: 1;
    min-width: 300px;
    text-align: left;
    padding: 30px;
    background-color: #f9f9f9;
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
}

.contact-info p {
    font-size: 1.1em;
    margin-bottom: 15px;
    color: #555;
    display: flex;
    align-items: flex-start;
}

.contact-info p i {
    color: #F8B500;
    margin-right: 15px;
    font-size: 1.3em;
    margin-top: 3px;
}

.contact-info p a {
    color: #555;
    text-decoration: none;
    transition: color 0.3s ease;
}

.contact-info p a:hover {
    color: #F8B500;
}

.social-media {
    margin-top: 30px;
    display: flex;
    gap: 15px;
}

.social-media a {
    color: #F8B500;
    font-size: 1.8em;
    transition: transform 0.3s ease, color 0.3s ease;
}

.social-media a:hover {
    transform: translateY(-3px);
    color: #e0a500;
}

.contact-map {
    flex: 2;
    min-width: 350px;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 10px rgba(0,0,0,0.08);
}

.contact-map iframe {
    border-radius: 10px;
}

.contact-form {
    max-width: 700px;
    margin: 0 auto;
    padding: 40px;
    background-color: #f9f9f9;
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
    text-align: left;
}

.contact-form h3 {
    text-align: center;
    color: #333;
    font-size: 2.2em;
    margin-bottom: 30px;
}

.contact-form input[type="text"],
.contact-form input[type="email"],
.contact-form textarea {
    width: calc(100% - 20px);
    padding: 12px;
    margin-bottom: 20px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1em;
}

.contact-form textarea {
    resize: vertical;
}

.contact-form button.btn {
    width: 100%;
    padding: 15px;
    font-size: 1.1em;
}

/* Footer */
footer {
    background-color: #222;
    color: #eee;
    text-align: center;
    padding: 30px 0;
    margin-top: 50px;
    font-size: 0.95em;
}

footer .footer-links {
    margin-top: 20px;
}

footer .footer-links a {
    color: #eee;
    text-decoration: none;
    margin: 0 15px;
    transition: color 0.3s ease;
}

footer .footer-links a:hover {
    color: #F8B500;
}

/* Responsive Düzenlemeler */
@media (max-width: 992px) {
    .hero h1 { font-size: 3em; }
    .hero h2 { font-size: 1.7em; }
    .about-content { flex-direction: column; text-align: center; gap: 30px; }
    .about-text, .about-image { flex: none; width: 100%; }
    .about-text { text-align: center; }
    .values ul { flex-direction: column; align-items: center; }
    .contact-grid { flex-direction: column; }
    .contact-info, .contact-map { flex: none; width: 100%; }
    .contact-info { text-align: center; }
    .contact-info p { justify-content: center; }
    .social-media { justify-content: center; }
}

@media (max-width: 768px) {
    nav { display: none; /* Menüyü mobil görünümde gizle veya hamburger menü ekle */ }
    header .container { justify-content: center; }
    .hero { min-height: 400px; padding: 60px 0; }
    .hero h1 { font-size: 2.5em; }
    .hero h2 { font-size: 1.4em; }
    h2 { font-size: 2.2em !important; }
    h3 { font-size: 1.6em !important; }
    .service-grid, .reference-grid { grid-template-columns: 1fr; }
    .values ul li { padding: 15px 20px; font-size: 1em; }
}