:root {
    --primary-color: #002452;
    --secondary-color: #f5f5f5;
    --text-color: #333;
    --white: #ffffff;
}

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

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

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* Header & Navigation */
header {
    background-color: var(--primary-color);
    padding: 10px 0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.logo {
    width: 100px;
    height: auto;
    filter: brightness(0) invert(1);
}

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

nav ul li {
    margin-left: 20px;
}

nav ul li a {
    color: var(--white);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

nav ul li a:hover {
    opacity: 0.8;
}

.btn-primary {
    background-color: var(--white);
    color: var(--primary-color) !important;
    padding: 8px 15px;
    border-radius: 5px;
    font-size: 0.9rem;
}

.btn-primary:hover {
    background-color: rgba(255, 255, 255, 0.9);
    color: var(--primary-color) !important;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    z-index: 1001;
}

.menu-toggle span {
    width: 30px;
    height: 3px;
    background-color: var(--white);
    margin: 3px 0;
    transition: all 0.3s ease;
}

@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
        z-index: 1500;
    }
    
    nav ul {
        position: fixed;
        top: 0;
        right: -100%;
        width: 70%;
        height: 100vh;
        background-color: var(--primary-color);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        transition: all 0.5s ease;
        box-shadow: -5px 0 15px rgba(0, 0, 0, 0.3);
        z-index: 1200;
        padding: 20px 0;
    }
    
    nav ul.active {
        right: 0;
        pointer-events: auto;
    }
    
    nav ul li {
        margin: 20px 0;
        width: 100%;
        text-align: center;
    }

    nav ul li a {
        color: var(--white);
        font-size: 18px;
        display: block;
        padding: 15px 30px;
        width: 100%;
        transition: background-color 0.3s ease;
    }
    
    nav ul li a:hover {
        background-color: rgba(255, 255, 255, 0.1);
        opacity: 1;
    }
    
    nav ul li a.btn-primary {
        margin: 10px auto;
        display: inline-block;
        width: auto;
    }
    
    .menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(6px, 6px);
    }
    
    .menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(6px, -6px);
    }
    
    .overlay {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100vh;
        background-color: rgba(0, 0, 0, 0.5);
        display: none;
        z-index: 1100;
        pointer-events: none;
    }
    
    .overlay.active {
        display: block;
        pointer-events: auto;
    }
}

/* Hero Section */
.hero {
    background-color: var(--primary-color);
    color: var(--white);
    text-align: center;
    padding: 100px 0 80px;
}

.hero h1 {
    font-size: 4rem;
    margin-bottom: 30px;
}

.hero-text {
    max-width: 800px;
    margin: 0 auto 50px;
    font-size: 1.2rem;
    line-height: 1.8;
}

@media (max-width: 768px) {
    .hero {
        padding: 80px 0 60px;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero-text {
        font-size: 1rem;
        padding: 0 20px;
    }
}

/* About Section */
.about {
    padding: 100px 0;
    background-color: var(--secondary-color);
}

.about h2 {
    color: var(--primary-color);
    text-align: left;
    margin-bottom: 20px;
    font-size: 2.5rem;
}

.about h3 {
    color: var(--primary-color);
    text-align: left;
    margin-bottom: 30px;
    font-size: 1.5rem;
}

.about p {
    max-width: 100%;
    margin: 0 auto 20px;
    text-align: left;
    line-height: 1.8;
}

@media (max-width: 768px) {
    .about {
        padding: 60px 0;
    }
    
    .about h2 {
        font-size: 2rem;
    }
    
    .about h3 {
        font-size: 1.3rem;
    }
}

/* Key Services Section */
.key-services {
    padding: 100px 0;
    background-color: var(--primary-color);
    color: var(--white);
}

.key-services h2 {
    text-align: center;
    margin-bottom: 60px;
    font-size: 2.5rem;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin: 0 auto;
    max-width: 1200px;
}

.service-item {
    text-align: left;
    padding: 30px;
    border-left: 3px solid var(--white);
    transition: all 0.3s ease;
}

.service-item:hover {
    transform: translateX(10px);
}

.service-number {
    font-size: 2.5rem;
    font-weight: bold;
    margin-bottom: 15px;
    color: var(--white);
}

.service-item h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: var(--white);
}

@media (max-width: 768px) {
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .service-item {
        text-align: center;
        border-left: none;
        border-bottom: 3px solid var(--white);
    }
    
    .service-item:hover {
        transform: translateY(-10px);
    }
}

/* Education Section */
.education {
    padding: 100px 0;
    background-color: var(--secondary-color);
}

.education h2 {
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 60px;
    font-size: 2.5rem;
    font-weight: bold;
}

.education-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

.education-card {
    background: var(--white);
    padding: 40px 30px;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    text-align: center;
    transition: all 0.3s ease;
}

.education-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

.education-card .icon {
    margin-bottom: 20px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(0, 31, 92, 0.05);
    width: 80px;
    height: 80px;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.education-card:hover .icon {
    background-color: var(--primary-color);
    transform: scale(1.1);
}

.education-card .icon svg {
    width: 35px;
    height: 35px;
    fill: var(--primary-color);
    transition: all 0.3s ease;
}

.education-card:hover .icon svg {
    fill: var(--white);
}

.education-card h3 {
    color: var(--primary-color);
    margin-bottom: 15px;
    font-size: 1.5rem;
    font-weight: 600;
}

.education-card p {
    color: #666;
    font-size: 0.95rem;
    line-height: 1.6;
}

.education-cta {
    text-align: center;
    margin-top: 60px;
}

.bugun-basla {
    width: 12em;
    height: 2.8em;
    margin: 0.5em;
    background: var(--primary-color);
    color: var(--white);
    border: none;
    border-radius: 0.625em;
    font-size: 20px;
    font-weight: bold;
    cursor: pointer;
    position: relative;
    z-index: 1;
    overflow: hidden;
    display: inline-block;
    text-decoration: none;
    text-align: center;
    line-height: 2.8em;
}

.bugun-basla:hover {
    color: var(--primary-color);
}

.bugun-basla:after {
    content: "";
    background: var(--white);
    position: absolute;
    z-index: -1;
    left: -20%;
    right: -20%;
    top: 0;
    bottom: 0;
    transform: skewX(-45deg) scale(0, 1);
    transition: all 0.5s;
}

.bugun-basla:hover:after {
    transform: skewX(-45deg) scale(1, 1);
    -webkit-transition: all 0.5s;
    transition: all 0.5s;
}

@media (max-width: 768px) {
    .education-grid {
        grid-template-columns: 1fr;
        padding: 0 20px;
    }
    
    .education h2 {
        font-size: 2rem;
        margin-bottom: 30px;
    }
    
    .education-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .education-card {
        padding: 20px;
    }
    
    .education-card .icon {
        width: 50px;
        height: 50px;
    }
    
    .education-card h3 {
        font-size: 1.2rem;
    }
    
    .education-card p {
        font-size: 0.9rem;
    }
}

@media (min-width: 769px) and (max-width: 1200px) {
    .education-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Management Section */
.management {
    padding: 100px 0;
    background-color: var(--white);
}

.management h2 {
    text-align: center;
    margin-bottom: 60px;
    font-size: 2.5rem;
    color: var(--primary-color);
}

.management-team {
    max-width: 1200px;
    margin: 0 auto;
}

.management-card {
    display: flex;
    align-items: center;
    gap: 40px;
    margin-bottom: 60px;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
    background-color: var(--white);
}

.management-image {
    flex: 0 0 250px;
    height: 250px;
    border-radius: 15px;
    overflow: hidden;
}

.management-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.management-info {
    flex: 1;
}

.management-info h3 {
    font-size: 1.8rem;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.management-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: #333;
    margin-bottom: 20px;
}

.management-title-subtitle {
    font-size: 0.85rem;
    font-weight: 400;
    color: var(--primary-color);
    margin-bottom: 15px;
    line-height: 1.4;
    margin-top: -12px;
}

.management-bio {
    font-size: 1.1rem;
    line-height: 1.6;
    color: #555;
}

.management-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

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

.team-member:hover {
    transform: translateY(-10px);
}

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

.team-member h4 {
    font-size: 1.2rem;
    color: var(--primary-color);
    margin: 15px 15px 5px;
}

.team-member p {
    font-size: 0.9rem;
    color: #555;
    margin: 0 15px 15px;
}

/* Activities Section */
.activities {
    padding: 100px 0;
    background-color: var(--secondary-color);
}

.activities h2 {
    text-align: center;
    margin-bottom: 60px;
    font-size: 2.5rem;
    color: var(--primary-color);
}

.activities-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

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

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

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

.activity-item h3 {
    font-size: 1.3rem;
    color: var(--primary-color);
    margin: 20px 20px 10px;
}

.activity-item p {
    font-size: 1rem;
    color: #555;
    margin: 0 20px 20px;
    line-height: 1.6;
}

@media (max-width: 768px) {
    .management-card {
        flex-direction: column;
        text-align: center;
        gap: 20px;
    }
    
    .management-image {
        flex: 0 0 auto;
    }
    
    .activities-grid {
        grid-template-columns: 1fr;
        padding: 0 20px;
    }
}

/* Footer */
footer {
    background-color: var(--primary-color);
    color: var(--white);
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-logo {
    height: 60px;
    filter: brightness(0) invert(1);
}

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

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

.footer-links a:hover {
    opacity: 0.8;
}

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.social-links img {
    width: 24px;
    height: 24px;
    filter: brightness(0) invert(1);
    transition: opacity 0.3s ease;
}

.social-links a:hover img {
    opacity: 0.8;
}

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

@media (max-width: 768px) {
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-logo {
        margin-bottom: 20px;
    }
    
    .footer-links, .footer-contact {
        margin: 20px 0;
    }
    
    .social-links {
        justify-content: center;
    }
}

/* Management Page Styles */
.management-page {
    padding: 100px 0;
}

.management-page h1 {
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 60px;
    font-size: 2.5rem;
}

.management-page .management-card {
    max-width: 800px;
    background: var(--white);
    border-radius: 15px;
    box-shadow: 0 5px 25px rgba(0,0,0,0.1);
    overflow: hidden;
    margin: 0 auto 40px;
    display: flex;
    align-items: stretch;
}

.management-page .management-card img {
    width: 300px;
    height: 400px;
    object-fit: cover;
}

.management-page .management-info {
    padding: 40px;
    flex: 1;
}

.management-page .management-info h3 {
    color: var(--primary-color);
    font-size: 1.8rem;
    margin-bottom: 15px;
}

.management-page .management-info .title {
    color: #666;
    font-size: 1.1rem;
    margin-bottom: 20px;
    font-weight: 500;
}

.management-page .management-info .description {
    color: var(--text-color);
    margin-bottom: 30px;
    line-height: 1.8;
}

@media (max-width: 768px) {
    .management-page {
        padding: 60px 0;
    }
    
    .management-page .management-card {
        flex-direction: column;
    }

    .management-page .management-card img {
        width: 100%;
        height: 300px;
    }

    .management-page .management-info {
        padding: 30px;
    }
}

/* Neon Button Styles */
.basvuru-button {
    --glow-color: #4d9fff;
    --glow-spread-color: rgba(77, 159, 255, 0.8);
    --enhanced-glow-color: #80bdff;
    --btn-color: #002452;
    border: .25em solid var(--glow-color);
    padding: 1em 3em;
    color: var(--glow-color);
    font-size: 15px;
    font-weight: bold;
    background-color: var(--btn-color);
    border-radius: 1em;
    outline: none;
    box-shadow: 0 0 1em .25em var(--glow-color),
           0 0 2em 1em var(--glow-spread-color),
           inset 0 0 .75em .25em var(--glow-color);
    text-shadow: 0 0 .5em var(--glow-color);
    position: relative;
    transition: all 0.3s;
    text-decoration: none;
    display: inline-block;
    cursor: pointer;
    z-index: 1;
}

.basvuru-button::after {
    pointer-events: none;
    content: "";
    position: absolute;
    top: 120%;
    left: 0;
    height: 100%;
    width: 100%;
    background-color: var(--glow-spread-color);
    filter: blur(1.5em);
    opacity: .8;
    transform: perspective(1.5em) rotateX(35deg) scale(1, .6);
    z-index: -1;
}

.basvuru-button:hover {
    color: var(--btn-color);
    background-color: var(--glow-color);
    box-shadow: 0 0 1.5em .35em var(--glow-color),
           0 0 3em 2em var(--glow-spread-color),
           inset 0 0 .75em .25em var(--glow-color);
    text-shadow: none;
}

.basvuru-button:active {
    box-shadow: 0 0 0.6em .25em var(--glow-color),
           0 0 2.5em 2em var(--glow-spread-color),
           inset 0 0 .5em .25em var(--glow-color);
}

/* Education Titles Section */
.education-titles {
    padding: 100px 0;
    background-color: var(--secondary-color);
}

.education-titles h2 {
    text-align: center;
    margin-bottom: 60px;
    font-size: 2.5rem;
    color: var(--primary-color);
}

.titles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin: 0 auto;
    max-width: 1200px;
}

.title-item {
    background-color: var(--white);
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    overflow: hidden;
    transition: all 0.3s ease;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.title-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.2);
}

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

.title-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

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

.title-content {
    padding: 25px;
    display: flex;
    align-items: center;
    gap: 15px;
}

.title-number {
    font-size: 2rem;
    font-weight: bold;
    color: var(--primary-color);
    opacity: 0.8;
    min-width: 40px;
    text-align: center;
}

.title-item h3 {
    font-size: 1.3rem;
    color: var(--primary-color);
    margin: 0;
}

@media (max-width: 768px) {
    .titles-grid {
        grid-template-columns: 1fr;
        padding: 0 20px;
    }
    
    .title-image {
        height: 180px;
    }
}

/* Presentation Section */
.presentation {
    padding: 100px 0;
    background: linear-gradient(180deg, var(--secondary-color) 0%, var(--primary-color) 100%);
}

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

.presentation-container {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    border-radius: 10px;
    overflow: hidden;
}

.presentation-container iframe {
    display: block;
    width: 100%;
    height: 600px;
    border: none;
}

.presentation-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 31, 92, 0.85);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.4s ease;
}

.presentation-container:hover .presentation-overlay {
    background-color: rgba(0, 31, 92, 0.95);
}

.presentation-text {
    text-align: center;
    padding: 40px;
    color: var(--white);
    max-width: 600px;
}

.presentation-text h3 {
    font-size: 2rem;
    margin-bottom: 20px;
}

.presentation-text p {
    font-size: 1.1rem;
    margin-bottom: 30px;
    opacity: 0.9;
}

.btn-presentation {
    display: inline-block;
    background-color: var(--white);
    color: var(--primary-color);
    padding: 15px 30px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: bold;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.btn-presentation:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

@media (max-width: 768px) {
    .presentation-container {
        margin: 0 20px;
    }
    
    .presentation-container iframe {
        height: 300px;
    }
    
    .presentation-text h3 {
        font-size: 1.5rem;
    }
    
    .presentation-text p {
        font-size: 1rem;
    }
}

.management-links {
    display: flex;
    gap: 20px;
    margin-top: 30px;
}

.management-links a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 20px;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-cv {
    background-color: #ff5722;
    color: white;
}

.btn-cv:hover {
    background-color: #e64a19;
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(230, 74, 25, 0.3);
}

.btn-linkedin {
    background-color: #0077b5;
    color: white;
}

.btn-linkedin:hover {
    background-color: #005f92;
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 119, 181, 0.3);
}

.management-links svg {
    fill: currentColor;
}

/* General Responsive Improvements */
@media (max-width: 768px) {
    nav {
        flex-direction: column;
        gap: 20px;
    }

    nav ul {
        flex-direction: column;
        text-align: center;
    }

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

    .management-card {
        flex-direction: column;
    }

    .management-card img {
        width: 100%;
        height: 300px;
    }
}

/* Management Page */
@media (max-width: 576px) {
    .management-card {
        padding: 20px;
    }
    
    .management-image {
        width: 200px;
        height: 200px;
    }
    
    .management-info h3 {
        font-size: 1.5rem;
    }
    
    .management-title {
        font-size: 1.1rem;
    }
    
    .management-title-subtitle {
        font-size: 0.85rem;
    }
    
    .management-bio {
        font-size: 1rem;
    }
    
    .management-links {
        flex-direction: column;
        gap: 10px;
    }
}

/* Utility Classes */
.no-scroll {
    overflow: hidden;
}