* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Arial', sans-serif;
}

body {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    line-height: 1.6;
    color: #333;
    transition: background 0.3s, color 0.3s;
    overflow: hidden; /* Loader sırasında kaydırmayı engelle */
}

body.dark-mode {
    background: linear-gradient(135deg, #2c3e50 0%, #3498db 100%);
    color: #fff;
}

body.loaded {
    overflow: auto; /* Yükleme bitince kaydırmayı aç */
}

.loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #1a3c6e;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 1;
    transition: opacity 0.5s ease-out;
}

.loader.hidden {
    opacity: 0;
    pointer-events: none;
}

.loader i {
    color: #ffd700;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

header {
    background: #1a3c6e;
    color: white;
    padding: 1rem;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
    transition: background 0.3s;
}

body.dark-mode header {
    background: #2c3e50;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

nav .logo {
    font-size: 1.8rem;
    font-weight: bold;
    letter-spacing: 1px;
}

nav ul {
    display: flex;
    list-style: none;
}

nav ul li {
    margin-left: 2rem;
}

nav ul li a {
    color: white;
    text-decoration: none;
    position: relative;
    transition: color 0.3s;
}

nav ul li a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background: #ffd700;
    transition: width 0.3s;
}

nav ul li a:hover::after {
    width: 100%;
}

nav ul li a:hover {
    color: #ffd700;
}

.theme-toggle {
    display: flex;
    align-items: center;
}

#theme-button {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: white;
    transition: transform 0.5s;
}

#theme-button:hover {
    transform: rotate(360deg);
}

.hero {
    height: 100vh;
    background: url('/assets/images/hero-bg.png') no-repeat center center/cover;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
    margin-top: 60px;
    position: relative;
}

.parallax {
    background-attachment: fixed;
    background-size: cover;
    background-position: center;
}

#particles-js {
    position: absolute;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.hero-content {
    background: rgba(0, 0, 0, 0.7);
    padding: 3rem;
    border-radius: 15px;
    backdrop-filter: blur(5px);
    z-index: 1;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.hero p {
    font-size: 1.3rem;
    margin-bottom: 2rem;
}

.cta-button {
    display: inline-block;
    padding: 1rem 2rem;
    background: #ffd700;
    color: #1a3c6e;
    text-decoration: none;
    border-radius: 50px;
    font-weight: bold;
    transition: background 0.3s, transform 0.3s, box-shadow 0.3s;
}

.cta-button:hover {
    background: #e6c200;
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

.slider {
    padding: 4rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.slider h2 {
    text-align: center;
    margin-bottom: 2rem;
    font-size: 2.5rem;
}

.slider-container {
    position: relative;
    overflow: hidden;
    max-width: 800px;
    margin: 0 auto;
}

.slide {
    display: none;
    text-align: center;
    opacity: 0;
    transform: translateX(100%);
    transition: opacity 0.5s ease-in-out, transform 0.5s ease-in-out;
}

.slide.active {
    display: block;
    opacity: 1;
    transform: translateX(0);
}

.slide img {
    max-width: 100%;
    height: 300px;
    object-fit: cover;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.slide h3 {
    margin: 1rem 0;
    color: #1a3c6e;
}

body.dark-mode .slide h3 {
    color: #ffd700;
}

.prev, .next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0, 0, 0, 0.7);
    color: white;
    border: none;
    padding: 1rem;
    cursor: pointer;
    font-size: 1.5rem;
    border-radius: 50%;
    transition: background 0.3s;
}

.prev:hover, .next:hover {
    background: #ffd700;
    color: #1a3c6e;
}

.prev { left: 10px; }
.next { right: 10px; }

.services {
    padding: 4rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

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

.service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.service-card {
    background: #fff;
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s, background 0.3s;
    transform-style: preserve-3d;
}

body.dark-mode .service-card {
    background: #34495e;
}

.service-card:hover {
    background: linear-gradient(135deg, #ffd700, #e6c200);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
}

.service-card .icon {
    margin-bottom: 1rem;
    color: #1a3c6e;
    transition: transform 0.3s;
}

body.dark-mode .service-card .icon {
    color: #ffd700;
}

.service-card:hover .icon {
    transform: rotate(360deg);
}

.service-card h3 {
    margin-bottom: 1rem;
    color: #1a3c6e;
}

body.dark-mode .service-card h3 {
    color: #fff;
}

.testimonials {
    padding: 4rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.testimonials h2 {
    text-align: center;
    margin-bottom: 2rem;
    font-size: 2.5rem;
}

.testimonial-slider {
    position: relative;
    overflow: hidden;
    max-width: 800px;
    margin: 0 auto;
}

.testimonial-slide {
    display: none;
    text-align: center;
    opacity: 0;
    transform: translateX(100%);
    transition: opacity 0.5s ease-in-out, transform 0.5s ease-in-out;
}

.testimonial-slide.active {
    display: block;
    opacity: 1;
    transform: translateX(0);
}

.testimonial-slide p {
    font-style: italic;
    font-size: 1.2rem;
}

.contact {
    padding: 4rem 2rem;
    max-width: 600px;
    margin: 0 auto;
}

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

.contact form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.contact input, .contact textarea {
    padding: 1rem;
    border: 1px solid #ccc;
    border-radius: 5px;
    font-size: 1rem;
    transition: border-color 0.3s, background 0.3s;
}

body.dark-mode .contact input, body.dark-mode .contact textarea {
    background: #34495e;
    color: #fff;
    border-color: #555;
}

.contact input:focus, .contact textarea:focus {
    border-color: #ffd700;
    outline: none;
}

.contact textarea {
    resize: vertical;
    min-height: 100px;
}

.live-support {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 1000;
}

.support-button {
    display: flex;
    align-items: center;
    padding: 1rem 1.5rem;
    background: #25D366;
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-weight: bold;
    transition: transform 0.3s, box-shadow 0.3s;
}

.support-button:hover {
    transform: scale(1.2);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

footer {
    background: #1a3c6e;
    color: white;
    padding: 2rem;
    text-align: center;
}

body.dark-mode footer {
    background: #2c3e50;
}

footer a {
    color: #ffd700;
    text-decoration: none;
}

@media (max-width: 768px) {
    nav ul {
        flex-direction: column;
        align-items: center;
    }

    nav ul li {
        margin: 0.5rem 0;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero p {
        font-size: 1rem;
    }

    .slide img {
        height: 200px;
    }

    .parallax {
        background-attachment: scroll;
    }
}