/* Header ve Navigasyon */
header {
    background-color: var(--header-bg);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    padding: 1rem 0;
    transition: all 0.3s ease;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

nav {
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 0 2rem;
}

.logo {
    flex: 0 0 auto;
    margin: 0;
    display: flex;
    align-items: center;
    transition: transform 0.3s ease;
    margin-left: 0;
}

.logo:hover {
    transform: scale(1.05);
}

.logo img {
    height: 45px;
    width: auto;
    display: block;
}

.nav-container {
    display: flex;
    align-items: center;
    gap: 2.5rem;
    margin-left: auto;
}

.nav-links {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 2rem;
}

.nav-links li {
    position: relative;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 1px;
    transition: all 0.3s ease;
    padding: 0.5rem 0;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent-color);
    transition: width 0.3s ease;
}

.nav-links a:hover {
    color: var(--accent-color);
}

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

/* Tema Değiştirme Butonu */
.theme-toggle {
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.3rem;
    cursor: pointer;
    padding: 0.5rem;
    transition: all 0.3s ease;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-toggle:hover {
    color: var(--accent-color);
    background-color: var(--hover-bg);
    transform: rotate(15deg);
}

/* Hamburger Menü */
.hamburger {
    display: none;
    cursor: pointer;
    background: none;
    border: none;
    padding: 0.5rem;
    z-index: 1006;
}

.hamburger span {
    display: block;
    width: 25px;
    height: 2px;
    background-color: var(--text-primary);
    margin: 6px 0;
    transition: all 0.3s ease;
    border-radius: 2px;
}

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

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

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

/* Responsive Tasarım */
@media screen and (max-width: 1024px) {
    nav {
        padding: 0 1.5rem;
    }
}

@media screen and (max-width: 768px) {
    nav {
        padding: 0 1rem;
    }

    .nav-container {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background-color: var(--header-bg);
        flex-direction: column;
        padding: 6rem 2rem 2rem;
        transition: right 0.3s ease;
        box-shadow: -2px 0 10px rgba(0, 0, 0, 0.1);
    }

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

    .nav-links {
        flex-direction: column;
        width: 100%;
        gap: 0.5rem;
    }

    .nav-links li {
        width: 100%;
    }

    .nav-links a {
        display: block;
        font-size: 1rem;
        width: 100%;
        text-align: left;
        border-radius: 8px;
        transition: background-color 0.3s ease;
    }

    .nav-links a:hover {
        background-color: var(--hover-bg);
    }

    .nav-links a::after {
        display: none;
    }

    .hamburger {
        display: block;
    }

    .theme-toggle {
        margin-top: 0;
    }
}

/* iPhone SE ve küçük ekranlar için */
@media screen and (max-width: 375px) {
    nav {
        padding: 0 0.8rem;
    }

    .logo img {
        height: 35px;
    }

    .nav-container {
        width: 90%;
        padding: 5rem 1.5rem 1.5rem;
    }

    .nav-links a {
        font-size: 0.9rem;
    }
}