:root {
    --dark-blue: #0d2d52;
    --medium-blue: #2a75b3;
    --light-blue: #eaf4ff;
    --red: #e4002b;
    --gray: #f4f4f4;
    --text-color: var(--dark-blue); /* Bu satırı güncelledim */
    --white: #ffffff;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', sans-serif;
    margin: 0;
    padding: 0;
    color: var(--text-color);
    line-height: 1.6;
}

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

/* Header */
header {
    background-color: var(--white);
    padding: 15px 0;
    border-bottom: 1px solid #ddd;
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.logo {
    height: 60px;
}

header nav a {
    text-decoration: none;
    color: var(--dark-blue);
    margin: 0 15px;
    font-weight: 600;
}

.contact-button {
    background-color: var(--red);
    color: var(--white);
    padding: 10px 20px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: 600;
}

/* Hero Section */
#hero {
    background-image: linear-gradient(rgba(13, 45, 82, 0.5), rgba(13, 45, 82, 0.5)), url('../images/hero-background.jpg'); /* Şeffaflık oranı düşürüldü */
    background-size: cover;
    background-position: center;
    color: var(--white);
    text-align: center;
    padding: 120px 0; /* Boşluk yeniden ayarlandı */
    display: flex;
    align-items: center;
    justify-content: center;
    /* min-height kaldırıldı */
}

    #hero .container {
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        height: 100%;
    }

    #hero h1 {
        font-size: 3.8rem;
        margin-bottom: 15px;
        font-weight: 700;
    }

    #hero p {
        font-size: 1.3rem;
        font-weight: 400;
        margin-bottom: 40px;
        letter-spacing: 1px;
    }

.hero-buttons {
    display: flex;
    gap: 20px;
    margin-top: 20px;
}

.button-primary {
    background-color: var(--red);
    color: var(--white);
    padding: 15px 30px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    border: none;
    cursor: pointer;
    transition: background-color 0.3s, transform 0.3s;
    white-space: nowrap;
}

    .button-primary:hover {
        background-color: #c30025;
        transform: translateY(-2px);
    }

.button-secondary {
    background-color: transparent;
    color: var(--white);
    padding: 15px 30px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    border: 2px solid var(--white);
    cursor: pointer;
    transition: background-color 0.3s, border-color 0.3s, color 0.3s, transform 0.3s;
    white-space: nowrap;
}

    .button-secondary:hover {
        background-color: var(--white);
        color: var(--dark-blue);
        transform: translateY(-2px);
    }
/* General Section Styling */
section {
    padding: 80px 0;
}

    section:nth-child(even) {
        background-color: var(--gray);
    }

h2 {
    text-align: center;
    font-size: 2.5rem;
    color: var(--dark-blue);
    margin-bottom: 40px;
}

/* About Section */
#about p {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 20px auto;
}

#about h2::after {
    content: '';
    display: block;
    width: 80px;
    height: 3px;
    background-color: var(--medium-blue);
    margin: 15px auto 0;
}

.about-images {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 40px;
}

    .about-images img {
        width: 45%;
        max-width: 400px;
        border-radius: 10px;
        box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    }

/* Services Section */
#services h2::after {
    content: '';
    display: block;
    width: 80px;
    height: 3px;
    background-color: var(--medium-blue);
    margin: 15px auto 0;
}

.services-intro {
    text-align: center;
    margin-bottom: 40px;
}

    .services-intro h3 {
        font-size: 1.8rem;
        color: var(--dark-blue);
        margin: 0;
        font-weight: 400;
    }

    .services-intro h4 {
        font-size: 2.2rem;
        color: var(--dark-blue);
        margin: 0px 0 0px 0;
        font-weight: 700;
    }

    .services-intro p {
        font-size: 1.1rem;
        max-width: 800px;
        margin: 0 auto;
    }

.service-tabs {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin: 40px auto 50px auto;
    border: 1px solid #ccc;
    padding: 10px;
    max-width: 800px;
}

    .service-tabs span {
        color: var(--text-color);
        font-weight: 600;
        padding: 0 20px;
        border-right: 1px solid #ccc;
    }

        .service-tabs span:last-child {
            border-right: none;
        }

.service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.service-box {
    padding: 30px;
    border-radius: 10px;
    color: var(--white);
}

    .service-box h4 {
        margin-top: 0;
        border-bottom: 1px solid rgba(255,255,255,0.5);
        padding-bottom: 10px;
        font-size: 1.3rem;
    }

    .service-box ul {
        list-style: disc;
        padding-left: 20px;
    }

        .service-box ul li {
            padding: 5px 0;
        }

.color-dark-blue {
    background-color: var(--dark-blue);
}

.color-teal {
    background-color: #5d9a9a;
}

.color-gray {
    background-color: #8c8c8c;
}

.color-red {
    background-color: var(--red);
}

.color-medium-blue {
    background-color: var(--medium-blue);
}

.color-blue-alt {
    background-color: #2e6093;
}

.service-button {
    display: inline-block;
    background-color: var(--white);
    color: var(--dark-blue);
    padding: 10px 25px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: 700;
    margin-top: 20px;
    transition: all 0.3s ease;
}

    .service-button:hover {
        background-color: var(--gray);
        transform: translateY(-2px);
    }

/* References Section */
.reference-logos {
    display: flex;
    justify-content: space-around;
    align-items: center;
    flex-wrap: wrap;
    gap: 40px;
    margin-top: 50px;
}

    .reference-logos img {
        height: 80px;
        transition: all 0.3s ease;
    }

        .reference-logos img:hover {
            transform: scale(1.1);
        }

h2.decorated-title {
    position: relative;
    display: inline-block;
    padding-bottom: 15px;
    text-align: center;
    width: 100%;
}

    h2.decorated-title::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 50%;
        transform: translateX(-50%);
        width: 100px;
        height: 4px;
        background-color: var(--medium-blue);
    }

    h2.decorated-title::before {
        content: '';
        position: absolute;
        bottom: -2px;
        left: 50%;
        transform: translateX(-50%);
        width: 8px;
        height: 8px;
        background-color: var(--red);
        z-index: 2;
    }


/* Patented Design Section */
#patented-design {
    background-color: var(--light-blue);
}

.patented-design-container {
    display: flex;
    align-items: center;
    gap: 40px;
}

.patented-design-content {
    flex: 3;
    text-align: center;
}

    .patented-design-content h2,
    .patented-design-content h3 {
        text-align: center;
    }

    .patented-design-content p {
        text-align: center;
        margin: 20px 0;
        max-width: none;
    }

.product-images {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin: 30px 0;
}

    .product-images img {
        width: calc(33.333% - 14px);
        max-width: 250px;
        height: auto;
        border-radius: 10px;
        border: 3px solid var(--white);
        box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    }

.patented-design-seal {
    flex: 1;
    text-align: center;
}

#patented-design .seal {
    height: 180px;
}

#patented-design ul {
    display: inline-block;
    text-align: left;
    list-style-type: disc;
    padding-left: 20px;
}

    #patented-design ul li {
        background: none;
        padding: 5px 0;
    }

/* Patented Solution Section */
.solution-main-title {
    font-size: 2.2rem;
    line-height: 1.4;
    margin-bottom: 50px;
}

    .solution-main-title .red-text {
        color: var(--red);
        display: block;
    }

    .solution-main-title .blue-text {
        color: var(--dark-blue);
        display: block;
    }

.solution-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 15px;
    margin-bottom: 50px;
}

.solution-box {
    color: var(--white);
    padding: 20px;
    text-align: center;
    font-weight: 600;
    font-size: 1.1rem;
    border-radius: 5px;
    min-height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.solution-red {
    background-color: var(--red);
}

.solution-blue {
    background-color: var(--dark-blue);
}

.solution-footer {
    text-align: center;
    color: var(--dark-blue);
}

    .solution-footer p {
        max-width: 800px;
        margin: 20px auto;
    }

.short-hr {
    border: none;
    height: 2px;
    width: 100px;
    background-color: #ccc;
    margin: 30px auto;
}

/* Contact Form */
#contact-form {
    background-color: var(--gray);
}

    #contact-form form {
        max-width: 700px;
        margin: 0 auto;
        display: flex;
        flex-direction: column;
        gap: 15px;
    }

    #contact-form p {
        text-align: center;
        max-width: 600px;
        margin: -20px auto 40px auto;
    }

    #contact-form input, #contact-form textarea {
        padding: 15px;
        font-family: 'Poppins', sans-serif;
        border: 1px solid #ccc;
        border-radius: 5px;
        font-size: 1rem;
    }

    #contact-form button {
        align-self: center;
    }


/* Footer */
footer {
    background-color: var(--dark-blue);
    color: #f0f0f0;
    padding: 60px 0 0 0;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 2fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid #4a6a8a;
}

.footer-col h4 {
    font-size: 1.5rem;
    color: var(--white);
    margin-top: 0;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

    .footer-col h4::after {
        content: '';
        position: absolute;
        left: 0;
        bottom: 0;
        width: 50px;
        height: 2px;
        background-color: var(--medium-blue);
    }

.footer-col .logo {
    height: 50px;
    margin-bottom: 20px;
}

.footer-about-text {
    color: #ccc;
    font-size: 0.9rem;
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

    .footer-links li {
        padding: 4px 0;
        color: #ccc;
    }

.footer-contact {
    list-style: none;
    padding: 0;
    margin: 0;
}

    .footer-contact li {
        display: flex;
        align-items: flex-start;
        margin-bottom: 20px;
        color: #ccc;
    }

    .footer-contact .icon {
        margin-right: 15px;
        color: var(--medium-blue);
        margin-top: 5px;
    }

        .footer-contact .icon svg {
            width: 20px;
            height: 20px;
        }

    .footer-contact strong {
        color: var(--white);
        display: block;
    }

.copyright {
    text-align: center;
    padding: 20px 0;
    font-size: 0.9rem;
    color: #aaa;
}


/* Responsive Design */
@media (max-width: 992px) {
    .patented-design-container {
        flex-direction: column;
        align-items: center;
    }

    .patented-design-content h2, .patented-design-content h3 {
        text-align: center;
    }

    .patented-design-content p {
        text-align: center;
    }

    .patented-design-content .product-images {
        justify-content: center;
    }

    .patented-design-seal {
        order: -1;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-col h4::after {
        left: 50%;
        transform: translateX(-50%);
    }

    .footer-contact li {
        justify-content: center;
        text-align: left;
    }
}


@media (max-width: 768px) {
    header .container {
        flex-direction: column;
        gap: 10px;
    }

    #hero h1 {
        font-size: 2.5rem;
    }

    .about-images, .product-images, .reference-logos {
        flex-direction: column;
        align-items: center;
    }

        .about-images img, .product-images img {
            width: 80%;
        }

    .solution-grid {
        grid-template-columns: 1fr;
    }

    .service-tabs {
        flex-direction: column;
        gap: 10px;
        border: none;
        padding: 0;
    }

        .service-tabs span {
            border-right: none;
            border-bottom: 1px solid #ccc;
            padding-bottom: 10px;
        }
}