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

.main-header {
    background-color: #000;
    color: #fff;
    padding: 1.5rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

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

.logo a {
    text-decoration: none;
    color: #fff;
}

.logo h1 {
    font-size: 1.8rem;
    font-weight: 300;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.logo img {
    display: none;
    height: 40px;
    width: auto;
}

.main-nav {
    position: relative;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 2px;
    background-color: #fff;
    margin: 3px 0;
    transition: all 0.3s ease;
}

.nav-list {
    list-style: none;
    display: flex;
    gap: 2.5rem;
    align-items: center;
}

.nav-list li a {
    color: #fff;
    text-decoration: none;
    font-size: 1rem;
    font-weight: 400;
    letter-spacing: 1px;
    transition: opacity 0.3s ease;
    position: relative;
}

.nav-list li a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 1px;
    background-color: #fff;
    transition: width 0.3s ease;
}

.nav-list li a:hover::after {
    width: 100%;
}

.nav-list li a:hover {
    opacity: 0.8;
}


.close-menu-item {
    display: none;
}

/* Responsive Tasarım */
@media (max-width: 768px) {
    .header-container {
        padding: 0 1rem;
    }

    .logo h1 {
        display: none;
    }

    .logo img {
        display: block;
        height: 63px;
    }

    .mobile-menu-toggle {
        display: flex;
        z-index: 1001;
    }

    .main-nav {
        position: relative;
    }

    .nav-list {
        position: fixed;
        top: 0;
        right: -100%;
        height: 100vh;
        width: 70%;
        max-width: 300px;
        background-color: #000;
        flex-direction: column;
        padding: 6rem 2rem 2rem;
        gap: 2rem;
        transition: right 0.3s ease;
        box-shadow: -5px 0 15px rgba(0, 0, 0, 0.3);
    }

    .nav-list.active {
        right: 0;
    }

    .nav-list li {
        width: 100%;
        text-align: center;
    }

    .close-menu-item {
        display: block;
        position: absolute;
        top: 1rem;
        right: 1rem;
        width: auto !important;
    }

    .close-menu-btn {
        background: transparent;
        border: none;
        color: #fff;
        font-size: 2rem;
        cursor: pointer;
        padding: 0.5rem;
        border-radius: 50%;
        width: 40px;
        height: 40px;
        display: flex;
        align-items: center;
        justify-content: center;
        transition: all 0.3s ease;
    }

    .close-menu-btn:hover {
        background-color: rgba(255, 255, 255, 0.1);
    }

    .close-menu-btn span {
        line-height: 1;
        font-weight: 300;
    }

    .mobile-menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .mobile-menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
}

@media (max-width: 480px) {
    .logo img {
        height: 54px;
    }

    .nav-list {
        width: 80%;
    }
}