/* --- Değişkenler ve Temel Ayarlar --- */
:root {
    --primary-color: #0056b3;
    --secondary-color: #007bff;
    --light-color: #f8f9fa;
    --dark-color: #212529;
    --text-color: #495057;
    --glass-bg: rgba(255, 255, 255, 0.15);
    --glass-blur: blur(10px);
    --border-radius-md: 15px;
    --box-shadow-light: 0 8px 25px rgba(0, 0, 0, 0.07);
}

body {
    font-family: 'Poppins', sans-serif;
    color: var(--text-color);
    line-height: 1.7;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 600;
    color: var(--dark-color);
}

section {
    padding: 120px 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--primary-color);
    text-align: center;
}

.section-subtitle {
    font-size: 1.1rem;
    color: #6c757d;
    max-width: 600px;
    margin: 0 auto 50px auto;
    text-align: center;
}

.btn-primary-custom {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: #fff;
    padding: 12px 30px;
    font-weight: 600;
    border-radius: 50px;
    transition: all 0.3s ease;
}

.btn-primary-custom:hover {
    background-color: #00418a;
    border-color: #00418a;
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 86, 179, 0.3);
}

.navbar {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    transition: background 0.3s ease;
}

.navbar-logo {
    height: 30px;
    width: auto;
}

.nav-item {
    text-align: center;
    padding: 1em;
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--primary-color) !important;
}

.navbar-brand .fa-bolt {
    color: var(--secondary-color);
}

.navbar .nav-link {
    font-weight: 500;
    color: var(--dark-color);
    transition: color 0.3s ease;
}

.navbar .nav-link:hover,
.navbar .nav-link.active {
    color: var(--primary-color);
}

.hero {
    height: 100vh;
    min-height: 700px;
    background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5));
    background-size: cover;
    background-position: center center;
    background-repeat: no-repeat;
    display: flex;
    align-items: center;
    color: #fff;
    padding-top: 90px;
}

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 700;
    color: #fff;
    line-height: 1.2;
}

.hero-content p {
    font-size: 1.2rem;
    margin: 20px 0 30px 0;
    max-width: 600px;
}

#research {
    background-color: var(--light-color);
}

.research-card {
    background: #fff;
    border-radius: var(--border-radius-md);
    box-shadow: var(--box-shadow-light);
    padding: 30px;
    text-align: center;
    height: 100%;
    transition: all 0.3s ease;
}

.research-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.1);
}

.research-card-img {
    font-size: 3.5rem;
    color: var(--primary-color);
    margin-bottom: 20px;
    line-height: 1;
}

.research-card-body h3 {
    font-size: 1.25rem;
    margin-bottom: 20px;
    min-height: 50px;
}

.research-card-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
}

.research-card-link .fa-arrow-right {
    transition: transform 0.3s ease;
}

.research-card-link:hover .fa-arrow-right {
    transform: translateX(5px);
}

.solution-card {
    background: #fff;
    border-radius: var(--border-radius-md);
    box-shadow: var(--box-shadow-light);
    overflow: hidden;
    height: 100%;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}

.solution-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.1);
}

.solution-card-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.solution-card-body {
    padding: 25px;
    flex-grow: 1;
}

.solution-card-body h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
}

.solution-card-body p {
    font-size: 0.95rem;
    color: var(--text-color);
}


.services-card {
    background: #fff;
    border-radius: var(--border-radius-md);
    box-shadow: var(--box-shadow-light);
    overflow: hidden;
    height: 100%;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}

.services-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.1);
}

.services-card-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.services-card-body {
    padding: 25px;
    flex-grow: 1;
}

.services-card-body h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
}

.services-card-body p {
    font-size: 0.95rem;
    color: var(--text-color);
}


#about {
    background-color: var(--light-color);
}

#about p {
    color: #64748b;
    line-height: 1.8;
    font-size: 1rem;
}

.about-stats {
    background: #fff;
    border-radius: var(--border-radius-md);
    padding: 20px;
    text-align: center;
    box-shadow: var(--box-shadow-light);
    height: 100%;
}

.about-stats i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.about-stats h4 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--dark-color);
    margin: 0;
}

.about-stats p {
    font-size: 1rem;
    color: var(--text-color);
    margin: 0;
}

.logo-scroller {
    max-width: 1100px;
    margin: 0 auto;
    overflow: hidden;

}

.logo-scroller-inner {
    display: flex;
    width: max-content;
    flex-wrap: nowrap;
    animation: scroll 50s linear infinite;
}

@keyframes scroll {
    0% {
        transform: translateX(0);
    }

    100% {
        transform: translateX(-50%);
    }
}

.logo-scroller a {
    display: inline-block;
    margin: 0 10px;
    outline: none;
    border: none;
}

.logo-scroller img {
    height: 100px;
    max-width: none;
    width: auto;
    transition: none;
}

#contact {
    color: #fff;
    background: linear-gradient(rgba(0, 40, 85, 0.8), rgba(0, 40, 85, 0.8)), url('https://images.unsplash.com/photo-1517048676732-d65bc937f952?w=1200') no-repeat center center;
    background-size: cover;
    background-attachment: fixed;
}

#contact .section-title,
#contact .section-subtitle {
    color: #fff;
}

.contact-info {
    padding: 20px;
}

.contact-info i {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.contact-info h4 {
    color: #fff;
    font-size: 1.25rem;
    margin-bottom: 10px;
}

.contact-info p {
    margin: 0;
}

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

.contact-info a:hover {
    opacity: 0.8;
}

#contactForm {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-radius: var(--border-radius-md);
    padding: 40px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

#contactForm .form-control {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    border-radius: 10px;
    padding: 15px;
    color: #fff;
}

#contactForm .form-control::placeholder {
    color: rgba(255, 255, 255, 0.7);
}

#contactForm .form-control:focus {
    background: rgba(255, 255, 255, 0.3);
    box-shadow: none;
    color: #fff;
}

footer {
    background-color: var(--dark-color);
    color: rgba(255, 255, 255, 0.7);
    padding: 30px 0;
}

@media (max-width: 991.98px) {
    .hero {
        height: auto;
        min-height: 0;
        padding: 150px 0 80px 0;
        text-align: center;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .hero-content p {
        font-size: 1.1rem;
    }

    #about .col-lg-6 {
        text-align: center;
    }

    .about-stats {
        margin-bottom: 20px;
    }

    .logo-scroller img {
        height: 70px;
    }
}

@media (max-width: 767.98px) {
    .section-title {
        font-size: 2rem;
    }

    .solution-card,
    .research-card {
        margin-bottom: 30px;
    }

    .logo-scroller img {
        height: 60px;
    }

    .logo-scroller a {
        margin: 0 20px;
    }
}