/* Genel yerleşim */
body {
    max-width: 1090px;
    margin: 0 auto;
    font-family: "Trebuchet MS", Arial, sans-serif;
    background: #f2f2f2;
    color: #222;
}

section {
    padding: 60px 30px;
}

h1, h2, h3 {
    font-weight: 700;
    margin-bottom: 20px;
}

/* İstanbul esintili renk teması */
/* Boğaz mavisi, Osmanlı sarısı, taş duvar gri, gece lacivert */
#teklif {
    background: linear-gradient(to bottom right, #0b3c60, #145a8d);
    color: #fff;
    min-height: 470px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    text-align: center;
}

#teklif a.btn {
    margin-top: 20px;
    padding: 14px 32px;
    background: #f4c542;
    color: #222;
    text-decoration: none;
    border-radius: 8px;
    font-weight: bold;
    transition: 0.3s;
}

#teklif a.btn:hover {
    background: #ffd75e;
}

/* Blokların kontrast renkleri */
#yorumlar {
    background: #fff;
    color: #222;
}

#urunler {
    background: #145a8d;
    color: #fff;
}

#uzmanlar {
    background: #f4c542;
    color: #222;
}

#abonelik {
    background: #fff;
    color: #222;
}

#egitim-medya {
    background: #0b3c60;
    color: #fff;
}

#iletisim {
    background: #e6e6e6;
    color: #222;
}

/* Liste ve içerik biçimleri */
ul {
    padding-left: 20px;
    line-height: 1.7;
}

article {
    margin-top: 40px;
    padding: 25px;
    background: #fff4d7;
    border-left: 6px solid #d6a020;
    color: #222;
    line-height: 1.7;
    border-radius: 6px;
}

/* Form tasarımı */
form {
    max-width: 420px;
    margin: 0 auto;
}

form input[type="email"] {
    width: 100%;
    padding: 14px;
    margin-bottom: 12px;
    border-radius: 6px;
    border: 1px solid #aaa;
    font-size: 16px;
}

form button {
    width: 100%;
    padding: 14px;
    border: none;
    border-radius: 6px;
    background: #145a8d;
    color: #fff;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: 0.3s;
}

form button:hover {
    background: #1f76b6;
}

/* Footer */
footer {
    text-align: center;
    padding: 20px;
    background: #0b3c60;
    color: #fff;
}

/* Mobil uyumluluk */
@media (max-width: 768px) {
    section {
        padding: 45px 20px;
    }

    #teklif {
        padding: 40px 20px;
    }

    h1 {
        font-size: 28px;
    }

    h2 {
        font-size: 24px;
    }

    article {
        padding: 18px;
    }

    form {
        width: 100%;
    }

    iframe {
        height: 220px !important;
    }
}