/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Poppins', sans-serif;
    line-height: 1.6;
    color: #333;
}

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

/* Header Styles */
.header {
    position: fixed;
    width: 100%;
    top: 0;
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.logo h1 {
    font-size: 1.8rem;
    color: #2c3e50;
    font-weight: 700;
}

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

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

.nav-links a {
    text-decoration: none;
    color: #2c3e50;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: #e74c3c;
}

/* Hero Section */
.hero {
    height: 100vh;
    background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url('../images/hero-bg.jpg');
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
    padding-top: 80px;
}

.hero-content {
    max-width: 800px;
    padding: 0 20px;
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    animation: fadeInUp 1s ease;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    animation: fadeInUp 1s ease 0.2s;
}

.cta-button {
    display: inline-block;
    padding: 1rem 2rem;
    background: #e74c3c;
    color: white;
    text-decoration: none;
    border-radius: 5px;
    transition: background 0.3s ease;
    animation: fadeInUp 1s ease 0.4s;
}

.cta-button:hover {
    background: #c0392b;
}

/* About Section */
.about {
    padding: 100px 0;
    background: #f9f9f9;
}

.about h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #2c3e50;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.about-text p {
    font-size: 1.1rem;
    color: #666;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.stat-item {
    text-align: center;
    padding: 20px;
    background: white;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.stat-item:hover {
    transform: translateY(-10px);
}

.stat-item i {
    font-size: 2.5rem;
    color: #e74c3c;
    margin-bottom: 1rem;
}

.stat-item h3 {
    font-size: 2rem;
    color: #2c3e50;
    margin-bottom: 0.5rem;
}

/* Services Section */
.services {
    padding: 100px 0;
}

.services h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #2c3e50;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.service-card {
    text-align: center;
    padding: 30px;
    background: white;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.service-card:hover {
    transform: translateY(-10px);
}

.service-card i {
    font-size: 3rem;
    color: #e74c3c;
    margin-bottom: 1.5rem;
}

.service-card h3 {
    font-size: 1.5rem;
    color: #2c3e50;
    margin-bottom: 1rem;
}

/* Projects Section */
.projects {
    padding: 100px 0;
    background: #f9f9f9;
    position: relative;
    margin-bottom: 50px;
}

.projects h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #2c3e50;
}

.project-swiper {
    padding: 20px 0;
    position: relative;
    width: 100%;
    overflow: hidden;
}

.swiper-slide {
    height: auto;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 0 15px;
}

.project-item {
    position: relative;
    overflow: hidden;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 350px;
    margin: 0 auto;
    transition: transform 0.3s ease;
}

.project-item:hover {
    transform: translateY(-10px);
}

.project-item img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.project-item:hover img {
    transform: scale(1.1);
}

.project-info {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 20px;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    color: white;
}

.project-info h3 {
    font-size: 1.2rem;
    margin-bottom: 5px;
}

.project-info p {
    font-size: 0.9rem;
    opacity: 0.9;
}

/* Swiper Navigation Buttons */
.swiper-button-next,
.swiper-button-prev {
    color: #e74c3c;
    width: 40px;
    height: 40px;
    transition: all 0.3s ease;
}

.swiper-button-next {
    right: 20px;
}

.swiper-button-prev {
    left: 20px;
}

.swiper-button-next:after,
.swiper-button-prev:after {
    font-size: 1.5rem;
    font-weight: bold;
}

.swiper-button-next:hover,
.swiper-button-prev:hover {
    color: #c0392b;
    transform: scale(1.1);
}

/* Swiper Pagination */
.swiper-pagination {
    bottom: -30px !important;
}

.swiper-pagination-bullet {
    width: 10px;
    height: 10px;
    background: #e74c3c;
    opacity: 0.5;
    transition: all 0.3s ease;
}

.swiper-pagination-bullet-active {
    opacity: 1;
    transform: scale(1.2);
}

@media (max-width: 768px) {
    .project-item {
        max-width: 100%;
    }

    .swiper-button-next,
    .swiper-button-prev {
        display: none;
    }
}

/* Contact Section */
.contact {
    padding: 100px 0;
    margin-bottom: 50px;
}

.contact h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #2c3e50;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 50px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 15px;
}

.info-item i {
    font-size: 1.5rem;
    color: #e74c3c;
}

.contact-form {
    display: grid;
    gap: 20px;
}

.contact-form input,
.contact-form textarea {
    padding: 15px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-family: inherit;
}

.contact-form textarea {
    height: 150px;
    resize: vertical;
}

.submit-btn {
    padding: 15px 30px;
    background: #e74c3c;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background 0.3s ease;
}

.submit-btn:hover {
    background: #c0392b;
}

/* Footer */
.footer {
    background: #2c3e50;
    color: white;
    padding: 50px 0 20px;
    position: relative;
    margin-top: 100px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    max-width: 1200px;
    margin: 0 auto 30px;
    padding: 0 20px;
}

.footer-logo h2 {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
}

.social-links {
    display: flex;
    gap: 20px;
}

.social-links a {
    color: white;
    font-size: 1.5rem;
    transition: color 0.3s ease;
}

.social-links a:hover {
    color: #e74c3c;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px 20px 0;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .navbar {
        padding: 1rem;
    }

    .nav-links {
        display: none;
    }

    .burger {
        display: block;
    }

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

    .about-content,
    .contact-content {
        grid-template-columns: 1fr;
    }

    .about-stats {
        grid-template-columns: 1fr;
    }

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

/* Burger Menu */
.burger {
    display: none;
    cursor: pointer;
}

.burger div {
    width: 25px;
    height: 3px;
    background-color: #2c3e50;
    margin: 5px;
    transition: all 0.3s ease;
}

/* Mobile Navigation */
.nav-active {
    transform: translateX(0%);
}

@keyframes navLinkFade {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.toggle .line1 {
    transform: rotate(-45deg) translate(-5px, 6px);
}

.toggle .line2 {
    opacity: 0;
}

.toggle .line3 {
    transform: rotate(45deg) translate(-5px, -6px);
}

/* TÜBİTAK Projects Section */
.tubitak {
    padding: 100px 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.tubitak h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #2c3e50;
}

.tubitak-content {
    display: flex;
    flex-direction: column;
    gap: 50px;
}

.tubitak-intro {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.tubitak-intro p {
    font-size: 1.1rem;
    color: #666;
    line-height: 1.8;
}

/* Category Tabs */
.tubitak-categories {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 30px;
}

.category-tab {
    padding: 10px 25px;
    background: white;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
    color: #666;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.category-tab:hover {
    background: #e74c3c;
    color: white;
}

.category-tab.active {
    background: #e74c3c;
    color: white;
}

/* Project Cards */
.tubitak-projects {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.tubitak-project {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.tubitak-project:hover {
    transform: translateY(-10px);
}

.project-image {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

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

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, transparent, rgba(0, 0, 0, 0.7));
    display: flex;
    align-items: flex-end;
    padding: 20px;
}

.project-tag {
    background: #e74c3c;
    color: white;
    padding: 5px 15px;
    border-radius: 15px;
    font-size: 0.9rem;
}

.project-content {
    padding: 25px;
}

.project-icon {
    width: 50px;
    height: 50px;
    background: #e74c3c;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.project-icon i {
    font-size: 1.5rem;
    color: white;
}

.project-details h3 {
    font-size: 1.4rem;
    color: #2c3e50;
    margin-bottom: 10px;
}

.project-details p {
    color: #666;
    margin-bottom: 15px;
}

.project-features {
    list-style: none;
    margin-bottom: 20px;
}

.project-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
    color: #666;
}

.project-features i {
    color: #e74c3c;
    font-size: 0.9rem;
}

.project-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 15px;
    border-top: 1px solid #eee;
}

.project-year, .project-budget {
    font-size: 0.9rem;
    color: #666;
}

.project-budget {
    color: #e74c3c;
    font-weight: 500;
}

/* Stats Section */
.tubitak-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.stat-box {
    background: white;
    padding: 30px;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.stat-box:hover {
    transform: translateY(-10px);
}

.stat-icon {
    width: 60px;
    height: 60px;
    background: #e74c3c;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.stat-icon i {
    font-size: 1.8rem;
    color: white;
}

.stat-box h4 {
    font-size: 2.5rem;
    color: #e74c3c;
    margin-bottom: 10px;
}

.stat-box p {
    color: #666;
    font-size: 1.1rem;
    margin-bottom: 15px;
}

.stat-progress {
    height: 6px;
    background: #f0f0f0;
    border-radius: 3px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: #e74c3c;
    border-radius: 3px;
    transition: width 1s ease;
}

/* CTA Section */
.tubitak-cta {
    text-align: center;
    padding: 50px;
    background: white;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    margin-top: 50px;
}

.tubitak-cta h3 {
    font-size: 1.8rem;
    color: #2c3e50;
    margin-bottom: 15px;
}

.tubitak-cta p {
    color: #666;
    margin-bottom: 25px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .tubitak-categories {
        flex-wrap: wrap;
    }

    .category-tab {
        width: calc(50% - 10px);
        text-align: center;
    }

    .tubitak-projects {
        grid-template-columns: 1fr;
    }

    .project-meta {
        flex-direction: column;
        gap: 10px;
        align-items: flex-start;
    }

    .tubitak-stats {
        grid-template-columns: 1fr;
    }

    .tubitak-cta {
        padding: 30px;
    }

    .tubitak-cta h3 {
        font-size: 1.5rem;
    }
}

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        right: -100%;
        top: 70px;
        height: calc(100vh - 70px);
        background: rgba(255, 255, 255, 0.95);
        display: flex;
        flex-direction: column;
        align-items: center;
        width: 100%;
        transition: 0.5s ease-in;
        z-index: 999;
    }

    .nav-links li {
        margin: 20px 0;
        opacity: 0;
    }

    .burger {
        display: block;
    }

    .nav-active {
        right: 0;
    }

    .toggle .line1 {
        transform: rotate(-45deg) translate(-5px, 6px);
    }

    .toggle .line2 {
        opacity: 0;
    }

    .toggle .line3 {
        transform: rotate(45deg) translate(-5px, -6px);
    }
}