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

html {
    scroll-behavior: smooth;
}

body {
    background: #ffffff;
    color: #1d1d1f;
    font-family: 'Poppins', system-ui, sans-serif;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

header {
    width: 100%;
    background: rgba(255,255,255,0.85);
    backdrop-filter: blur(20px);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid #eee;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 5%;
}

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.logo img {
    height: 48px;           /* İstediğin boyuta göre değiştirebilirsin */
    width: auto;
    transition: height 0.3s ease;
}

.logo:hover img {
    height: 52px;
}

nav {
    display: flex;
    gap: 18px;
    align-items: center;
}

nav a {
    color: #1d1d1f;
    text-decoration: none;
    font-weight: 500;
    font-size: 14px;
    transition: 0.3s;
}

nav a:hover {
    color: #0071e3;
}

.whatsapp-btn {
    background: #25D366;
    color: white;
    padding: 10px 18px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    font-size: 13px;
    transition: 0.3s;
}

.whatsapp-btn:hover {
    background: #1eb855;
    transform: translateY(-1px);
}

section {
    width: 100%;
}

.content-section,
.hero-modern,
.cta-section,
.content-image,
.hero {
    max-width: 1100px;
    margin: 0 auto;
    padding: 80px 20px;
}

.hero,
.hero-modern {
    text-align: center;
    padding: 120px 20px;
    background: #f5f5f7;
}

.hero h1,
.hero-modern h1 {
    font-size: 52px;
    font-weight: 600;
    letter-spacing: -1px;
}

.hero p,
.hero-modern p {
    font-size: 18px;
    max-width: 700px;
    margin: 20px auto 0;
    color: #555;
}

.content-image {
    text-align: center;
    padding: 40px 20px;
}

.content-image img {
    width: 100%;
    max-width: 900px;
    border-radius: 16px;
    object-fit: cover;
}

.content-section h2 {
    font-size: 26px;
    margin-top: 40px;
    margin-bottom: 10px;
    text-align: center;
}

.content-section p {
    font-size: 16px;
    color: #555;
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.main-btn {
    display: inline-block;
    background: #0071e3;
    color: white;
    padding: 14px 32px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 500;
    margin-top: 20px;
    transition: 0.3s;
}

.main-btn:hover {
    background: #005bb5;
    transform: translateY(-2px);
}

.cta-section {
    text-align: center;
}

.site-footer {
    background: #f5f5f7;
    color: #333;
    padding: 60px 5% 20px;
    border-top: 1px solid #eaeaea;
}

.footer-content {
    max-width: 1100px;
    margin: auto;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 40px;
}

.footer-box h3 {
    margin-bottom: 10px;
}

.footer-box a {
    color: #555;
    text-decoration: none;
    display: block;
    margin-bottom: 8px;
}

.footer-box a:hover {
    color: #0071e3;
}

.footer-bottom {
    text-align: center;
    margin-top: 40px;
    font-size: 13px;
    color: #888;
}

@media (max-width: 768px) {
    header {
        flex-direction: column;
        gap: 16px;
        padding: 16px 5%;
    }

    .logo img {
        height: 42px;
    }

    nav {
        flex-wrap: wrap;
        justify-content: center;
        gap: 14px;
    }

    .hero h1,
    .hero-modern h1 {
        font-size: 34px;
    }

    .content-section p {
        padding: 0 10px;
    }
}