/* GENEL TEMA */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f8f9fa;
    background-image: 
        linear-gradient(#e9ecef 1px, transparent 1px),
        linear-gradient(90deg, #e9ecef 1px, transparent 1px);
    background-size: 40px 40px; /* Daha ufak, kurumsal fayans hissi */
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    color: #333;
}

/* HEADER TASARIMI */
.kurumsal-header {
    background-color: #003366; /* Kurumsal Lacivert */
    color: white;
    padding: 15px 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-icerik {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
}

.logo {
    font-size: 24px;
    font-weight: bold;
    letter-spacing: 1px;
}

.ana-menu a {
    color: #e0e0e0;
    text-decoration: none;
    margin-left: 20px;
    font-size: 14px;
    transition: color 0.3s;
}

.ana-menu a:hover { color: #ffffff; }

/* SAYFA İSKELETİ (3 KOLONLU YAPI) */
.sayfa-duzeni {
    display: flex;
    justify-content: space-between;
    max-width: 1400px;
    margin: 40px auto;
    padding: 0 20px;
    flex: 1;
    gap: 30px;
}

/* REKLAM ALANLARI (GOOGLE ADS) */
.reklam-alani {
    width: 160px;
    display: flex;
    justify-content: center;
}

.ads-placeholder {
    width: 160px;
    height: 600px;
    background-color: #e9ecef;
    border: 2px dashed #adb5bd;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #6c757d;
    position: sticky;
    top: 100px; /* Header'ın altında kayarken ekranda kalır */
}

/* ANA İÇERİK (FORM ALANI) */
.merkez-icerik {
    flex: 1;
    max-width: 700px;
}

.uygulama-konteyner {
    background-color: #ffffff;
    border-top: 5px solid #003366;
    box-shadow: 0 5px 20px rgba(0,0,0,0.05);
    padding: 40px;
}

.uygulama-baslik h2 {
    color: #003366;
    margin-top: 0;
    border-bottom: 1px solid #dee2e6;
    padding-bottom: 10px;
}

.uygulama-baslik p {
    color: #6c757d;
    font-size: 14px;
    line-height: 1.6;
}

/* FORM ELEMANLARI */
.sayfa { display: none; }
.sayfa.aktif { display: block; animation: fadeIn 0.4s; }

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.asama-gostergesi {
    font-size: 12px;
    font-weight: bold;
    color: #0056b3;
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.form-grubu { margin-bottom: 25px; }

label {
    display: block;
    font-weight: bold;
    margin-bottom: 8px;
    color: #212529;
}

select {
    width: 100%;
    padding: 12px;
    border: 1px solid #ced4da;
    border-radius: 4px;
    background-color: #f8f9fa;
    font-size: 15px;
}

.secenek-grubu label {
    font-weight: normal;
    display: block;
    padding: 10px;
    border: 1px solid #ced4da;
    margin-bottom: 5px;
    cursor: pointer;
    background-color: #ffffff;
    transition: background-color 0.2s;
}

.secenek-grubu label:hover { background-color: #f1f3f5; }

/* CAPTCHA PANELİ */
.guvenlik-paneli {
    border: 1px solid #cce5ff;
    background-color: #e6f2ff;
    padding: 15px;
    margin-bottom: 25px;
    border-left: 4px solid #0056b3;
}

.guvenlik-baslik {
    font-size: 12px;
    font-weight: bold;
    color: #004085;
    margin-bottom: 10px;
}

.checkbox-alani label {
    display: inline;
    font-weight: normal;
    font-size: 13px;
    cursor: pointer;
}

/* BUTONLAR */
.buton-hizalama { display: flex; gap: 15px; margin-top: 20px; }
.buton-hizalama.sag { justify-content: flex-end; }
.buton-hizalama.tam-genislik { justify-content: space-between; }

button {
    padding: 12px 25px;
    border: none;
    cursor: pointer;
    font-size: 15px;
    font-weight: bold;
    border-radius: 4px;
    transition: background-color 0.3s;
}

.btn-kurumsal { background-color: #003366; color: white; }
.btn-kurumsal:hover { background-color: #002244; }

.btn-kurumsal.vurgulu { background-color: #28a745; width: 100%; }
.btn-kurumsal.vurgulu:hover { background-color: #218838; }

.btn-ikincil { background-color: #e9ecef; color: #495057; }
.btn-ikincil:hover { background-color: #ced4da; }

/* SONUÇ PANOSU */
.sonuc-baslik {
    color: #28a745;
    font-size: 24px;
    font-weight: bold;
    border-bottom: 1px solid #dee2e6;
    padding-bottom: 10px;
}

.veri-panosu {
    background-color: #f8f9fa;
    border: 1px solid #dee2e6;
    padding: 30px;
    text-align: center;
    margin: 30px 0;
}

.veri-etiket { font-size: 16px; color: #6c757d; margin-bottom: 10px; }
.veri-deger { font-size: 36px; font-weight: bold; color: #003366; }

/* FOOTER TASARIMI */
.kurumsal-footer {
    background-color: #343a40;
    color: #adb5bd;
    padding: 20px 0;
    margin-top: auto;
    font-size: 13px;
}

.footer-icerik {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
}

.footer-linkler a {
    color: #adb5bd;
    text-decoration: none;
    margin-left: 15px;
}

.footer-linkler a:hover { color: #ffffff; }

/* ILETISIM */

input[type="text"], input[type="email"], textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ced4da;
    border-radius: 4px;
    background-color: #f8f9fa;
    font-size: 15px;
    font-family: inherit;
    box-sizing: border-box;
    transition: border-color 0.3s;
}

input[type="text"]:focus, input[type="email"]:focus, textarea:focus {
    outline: none;
    border-color: #003366;
}

.iletisim-bilgileri {
    background-color: #e6f2ff;
    border-left: 4px solid #0056b3;
    padding: 20px;
    margin-bottom: 30px;
    border-radius: 0 4px 4px 0;
    color: #004085;
    font-size: 14px;
    line-height: 1.6;
}

.iletisim-bilgileri strong {
    color: #003366;
}

/* =========================================
   RESPONSIVE TASARIM (MOBİL VE TABLET UYUMU)
   ========================================= */

/* TABLET EKRANLAR (992px ve altı) */
@media screen and (max-width: 992px) {
    /* Kenar reklamlarını gizle ve ana içeriği merkeze al */
    .reklam-alani {
        display: none;
    }
    .sayfa-duzeni {
        justify-content: center;
        gap: 0;
    }
    .merkez-icerik {
        max-width: 100%;
        width: 100%;
    }
}

/* MOBİL EKRANLAR (768px ve altı) */
@media screen and (max-width: 768px) {
    /* Header Düzeni: Logo ve menüyü alt alta ortala */
    .header-icerik {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
    
    .ana-menu {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 10px;
    }
    
    .ana-menu a {
        margin-left: 0;
        font-size: 13px;
        background-color: rgba(255,255,255,0.1);
        padding: 5px 10px;
        border-radius: 4px;
    }

    /* Ana Yapı Boşlukları */
    .sayfa-duzeni {
        margin: 20px auto;
        padding: 0 15px;
    }
    
    .uygulama-konteyner {
        padding: 20px; /* İç boşluğu daralt */
    }
    
    .uygulama-baslik h2 {
        font-size: 20px;
    }

    /* Buton Düzeni: Telefonda yan yana daralmasın, alt alta tam boy olsun */
    .buton-hizalama {
        flex-direction: column;
        gap: 10px;
    }
    
    .buton-hizalama button {
        width: 100%;
    }

    /* Footer Düzeni: Yazı ve linkleri alt alta ortala */
    .kurumsal-footer {
        padding: 15px 0;
    }
    
    .footer-icerik {
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }
    
    .footer-linkler a {
        display: block;
        margin: 5px 0;
    }
}