:root {
    --primary-color: #FFA500; /* Canlı Turuncu */
    --secondary-color: #4A90E2; /* Yatıştırıcı Mavi */
    --dark-color: #2c3e50; /* Koyu Kurşun */
    --light-color: #ecf0f1; /* Açık Gri */
    --white-color: #ffffff;
    --text-color: #34495e; /* Koyu Mavi-Gri */
    --font-family: 'Poppins', sans-serif;
    --border-radius: 12px;
    --shadow: 0 10px 20px rgba(0,0,0,0.1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    overflow-x: hidden; /* Prevent horizontal scrolling */
}

body {
    font-family: var(--font-family);
    color: var(--text-color);
    background-color: var(--light-color);
    line-height: 1.7;
}

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

/* Header */
.site-header {
    background: var(--white-color);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
}

.main-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo img {
    height: 50px;
    width: auto;
}

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

.nav-links li {
    margin-left: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--dark-color);
    font-weight: 600;
    transition: color 0.3s ease;
    position: relative;
    padding-bottom: 5px;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

.nav-links a:hover::after, .nav-links a.active::after {
    width: 100%;
}

.nav-links a:hover, .nav-links a.active {
    color: var(--primary-color);
}

.btn {
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-block;
    border: none;
    cursor: pointer;
}

.btn-primary {
    background: var(--primary-color);
    color: var(--white-color);
}

.btn-primary:hover {
    background: #e69500;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(255, 165, 0, 0.4);
}

.btn-secondary {
    background: var(--secondary-color);
    color: var(--white-color);
}
.btn-secondary:hover {
    background: #3a7ac8;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(74, 144, 226, 0.4);
}

.mobile-nav-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--dark-color);
    cursor: pointer;
}


/* Hero Section */
.hero {
    background-color: var(--dark-color);
    color: var(--white-color);
    padding: 8rem 0;
    text-align: center;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, var(--dark-color) 0%, var(--secondary-color) 100%);
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
    line-height: 1.2;
}

.hero-content p {
    font-size: 1.2rem;
    max-width: 700px;
    margin: 0 auto 2rem;
    font-weight: 300;
}

.hero-shape {
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
    height: 100px;
    background: var(--light-color);
    clip-path: polygon(0 100%, 100% 100%, 100% 0);
}


/* Features Section */
.features {
    padding: 6rem 0;
    background: var(--light-color);
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--dark-color);
}

.section-header p {
    font-size: 1.1rem;
    color: var(--text-color);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--white-color);
    padding: 2.5rem;
    border-radius: var(--border-radius);
    text-align: center;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 30px rgba(0,0,0,0.15);
}

.card-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--dark-color);
}

/* About Us Section */
.about-us {
    padding: 6rem 0;
    background: var(--white-color);
}

.about-us-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-us-image img {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.about-us-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

.about-us-content p {
    margin-bottom: 1.5rem;
}

.about-us-content ul {
    list-style: none;
    margin-bottom: 2rem;
}

.about-us-content li {
    margin-bottom: 0.75rem;
    font-weight: 600;
}

.about-us-content li i {
    color: var(--primary-color);
    margin-right: 0.5rem;
}

/* Projects Section */
.projects {
    padding: 6rem 0;
    background: var(--light-color);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.project-card {
    background: var(--white-color);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 30px rgba(0,0,0,0.15);
}

.project-card img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    display: block;
}

.project-info {
    padding: 1.5rem;
}

.project-info h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--dark-color);
}

/* Testimonials Section */
.testimonials {
    padding: 6rem 0;
    background: var(--white-color);
    position: relative;
}

.testimonial-carousel .swiper-slide {
    padding: 2rem 0;
}

.testimonial-card {
    background: var(--white-color);
    padding: 2.5rem;
    border-radius: var(--border-radius);
    border: 1px solid #eee;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    text-align: center;
    margin: 0 1rem;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.testimonial-author {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 1.5rem;
}

.author-icon {
    font-size: 3.5rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.testimonial-author h4 {
    margin-bottom: 0.1rem;
    color: var(--dark-color);
}

.testimonial-author span {
    color: var(--text-color);
    font-size: 0.9rem;
}

.testimonial-card p {
    font-style: italic;
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.star-rating {
    color: #FFD700; /* Gold */
}

.testimonial-carousel .swiper-button-next, .testimonial-carousel .swiper-button-prev {
    color: var(--primary-color);
}

.testimonial-carousel .swiper-pagination-bullet-active {
    background: var(--primary-color);
}


/* CTA Section */
.cta {
    background: linear-gradient(135deg, var(--primary-color) 0%, #ff8c00 100%);
    color: var(--white-color);
    padding: 5rem 2rem;
    text-align: center;
    border-radius: var(--border-radius);
    margin: 6rem 20px;
    box-shadow: 0 20px 40px rgba(255, 165, 0, 0.3);
}

.cta h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.cta p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

/* Footer */
.site-footer {
    background: var(--dark-color);
    color: var(--light-color);
    padding: 4rem 0 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-about p {
    margin-top: 1rem;
    max-width: 350px;
}

.footer-links h4, .footer-contact h4 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.footer-links ul {
    list-style: none;
}

.footer-links a {
    color: var(--light-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: var(--primary-color);
}

.footer-contact p {
    margin-bottom: 0.5rem;
}

.footer-contact i {
    margin-right: 0.5rem;
    color: var(--primary-color);
}

.social-media {
    margin-top: 1rem;
}

.social-media a {
    color: var(--light-color);
    text-decoration: none;
    font-size: 1.5rem;
    margin-right: 1rem;
    transition: color 0.3s ease;
}

.social-media a:hover {
    color: var(--primary-color);
}

.copyright {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #444;
}

/* Animations */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.animate-on-scroll.is-visible {
    opacity: 1;
    transform: translateY(0);
}


/* Responsive Design */
@media (max-width: 992px) {
    .nav-links,
    .main-nav .btn-primary {
        display: none;
    }
    .mobile-nav-toggle {
        display: block;
    }
    .about-us-grid {
        grid-template-columns: 1fr;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .footer-about p {
        margin: 1rem auto;
    }
     .contact-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .hero {
        padding: 6rem 0;
    }
    .hero-content h1 {
        font-size: 2.5rem;
    }
    .hero-content p {
        font-size: 1rem;
    }
    .features, .about-us, .projects, .testimonials, .site-footer {
        padding: 4rem 20px;
    }
     .cta {
        margin: 4rem 20px;
        padding: 3rem 1rem;
    }
    .section-header h2, .about-us-content h2, .cta h2 {
        font-size: 2rem;
    }
    .testimonial-carousel {
        /* The container adds padding, so remove it from here */
    }
}

/* Contact Page Specific */
.contact-section {
    padding: 6rem 0;
    background: var(--light-color);
}
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: flex-start;
}
.contact-form-container h2, .contact-info h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--dark-color);
}
.contact-form-container p, .contact-info p {
    margin-bottom: 2rem;
}
.form-group {
    margin-bottom: 1.5rem;
}
.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
}
.form-group input, .form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border-radius: var(--border-radius);
    border: 1px solid #ccc;
    font-family: var(--font-family);
}
.contact-info ul {
    list-style: none;
}
.contact-info li {
    display: flex;
    align-items: center;
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
}
.contact-info li i {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-right: 1rem;
    width: 30px;
}