/* Header Styles */
.main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 15px 0;
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
}

.logo a {
    text-decoration: none;
    color: var(--primary);
    font-size: 24px;
    font-weight: 700;
}

.logo img {
    height: 50px;
    width: auto;
}

.main-nav ul {
    display: flex;
    gap: 30px;
    align-items: center;
    list-style: none;
    margin: 0;
    padding: 0;
}

.main-nav a {
    text-decoration: none;
    color: var(--dark);
    font-weight: 600;
    font-size: 15px;
    letter-spacing: 0.5px;
    transition: color 0.3s ease;
    padding: 8px 0;
    position: relative;
    font-family: Poppins, sans-serif;
}

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--gradient);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.main-nav a:hover::after {
    transform: scaleX(1);
}

.main-nav a:hover {
    color: var(--primary);
}

/* Teklif Al Butonu */
.btn-contact {
    background: linear-gradient(120deg, #2B3A67 0%, #496A81 100%);
    color: white !important;
    padding: 12px 24px !important;
    border-radius: 5px;
    transition: all 0.3s ease;
    font-weight: 500;
    letter-spacing: 0.5px;
}

.btn-contact:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(43, 58, 103, 0.3);
    background: linear-gradient(120deg, #496A81 0%, #2B3A67 100%);
}

.btn-contact::after {
    display: none;
}

/* Aktif Menü */
.main-nav a.active {
    color: var(--primary);
}

.main-nav a.active::after {
    transform: scaleX(1);
}

/* Mobile Menu */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
    padding: 10px;
}

.mobile-menu-btn span {
    width: 30px;
    height: 2px;
    background: var(--primary);
    transition: all 0.3s ease;
}

/* Responsive */
@media (max-width: 992px) {
    .mobile-menu-btn {
        display: flex;
    }

    .main-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: white;
        padding: 20px;
        box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    }

    .main-nav.active {
        display: block;
    }

    .main-nav ul {
        flex-direction: column;
        gap: 20px;
    }

    .main-nav a {
        display: block;
        padding: 10px;
    }

    .btn-contact {
        width: 100%;
        text-align: center;
        margin-top: 10px;
    }
}

@media (max-width: 576px) {
    .header-container {
        padding: 0 15px;
    }

    .logo img {
        height: 40px;
    }
}

/* ... header ile ilgili diğer stiller ... */