* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: 'Segoe UI', Arial, sans-serif;
    background: #f4f6f8;
    color: #333;
}

.banner {
    background: #28356e;
    color: #fff;
    padding: 28px 16px 32px;
    text-align: center;
    position: relative;
}

.banner__top {
    display: grid;
    grid-template-areas: "sol orta sag";
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: center;
    gap: 20px;
    max-width: 1180px;
    margin: 0 auto 18px;
}

.banner__hucre {
    min-width: 0;
}

.banner__hucre--sol {
    grid-area: sol;
    text-align: left;
}

.banner__hucre--orta {
    grid-area: orta;
    text-align: center;
}

.banner__hucre--sag {
    grid-area: sag;
    text-align: right;
}

.banner__geri {
    color: #fff;
    text-decoration: none;
    font-size: 14px;
    border: 1px solid rgba(255, 255, 255, 0.6);
    padding: 8px 14px;
    border-radius: 20px;
    white-space: nowrap;
}

.banner__geri:hover {
    background: rgba(255, 255, 255, 0.15);
}

.banner__logo {
    display: block;
    height: 82px;
    width: auto;
}

.banner__baslik {
    font-size: 22px;
    font-weight: 700;
    margin: 0;
    letter-spacing: 0.5px;
}

.banner__aciklama {
    max-width: 480px;
    margin: 10px auto 0;
    font-size: 14px;
    line-height: 1.5;
    color: rgba(255, 255, 255, 0.9);
}

.ust-banner {
    max-width: 1180px;
    margin: 0 auto;
    padding: 20px 16px 0;
}

.ust-banner img {
    display: block;
    width: 100%;
    height: auto;
    max-height: 320px;
    object-fit: cover;
    border-radius: 10px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

@media (max-width: 767px) {
    .banner__top {
        grid-template-areas:
            "sol sag"
            "orta orta";
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 14px 12px;
    }

    .banner__hucre--orta {
        padding-top: 2px;
    }

    .ust-banner img {
        height: auto;
        max-height: none;
        aspect-ratio: auto;
        object-fit: contain;
    }
}

.sayfa {
    position: relative;
    z-index: 1;
    max-width: 1180px;
    margin: 24px auto 40px;
    padding: 0 16px;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: 24px;
}

.icerik {
    max-width: 560px;
    width: 100%;
}

.yan-banner {
    flex: 0 0 220px;
    align-self: stretch;
}

.yan-banner img {
    width: 100%;
    height: 100%;
    max-height: 640px;
    object-fit: cover;
    border-radius: 10px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

@media (max-width: 991px) {
    .yan-banner {
        display: none;
    }
}

.kart {
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
    overflow: hidden;
}

.kart__adim {
    background: #3f5fa8;
    color: #fff;
    padding: 16px 20px;
    font-size: 18px;
    font-weight: 600;
}

.kart__gövde {
    padding: 24px 20px 28px;
}

.form-grup {
    margin-bottom: 18px;
}

.form-grup label {
    display: block;
    font-size: 13px;
    color: #666;
    margin-bottom: 6px;
}

.form-grup input,
.form-grup select {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid #d3d7dc;
    border-radius: 6px;
    font-size: 15px;
    background: #fff;
}

.form-grup input:focus,
.form-grup select:focus {
    outline: none;
    border-color: #1e88e5;
}

.hata {
    color: #d32f2f;
    font-size: 12px;
    margin-top: 4px;
}

.kvkk-onay {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin: 4px 0 8px;
    color: #555;
    font-size: 13px;
    line-height: 1.45;
}

.kvkk-onay input {
    flex: 0 0 auto;
    width: 18px;
    height: 18px;
    margin: 1px 0 0;
    accent-color: #3f5fa8;
}

.kvkk-onay label {
    margin: 0;
}

.kvkk-ac {
    padding: 0;
    border: 0;
    background: transparent;
    color: #28356e;
    font: inherit;
    text-align: left;
    text-decoration: underline;
    cursor: pointer;
}

.kvkk-ac:hover {
    color: #3f5fa8;
}

.kvkk-modal {
    width: min(560px, calc(100% - 32px));
    max-height: min(720px, calc(100% - 32px));
    padding: 0;
    border: 0;
    border-radius: 10px;
    color: #333;
    box-shadow: 0 18px 60px rgba(0, 0, 0, 0.28);
}

.kvkk-modal::backdrop {
    background: rgba(17, 28, 62, 0.72);
}

.kvkk-modal__baslik {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 18px 20px;
    background: #3f5fa8;
    color: #fff;
}

.kvkk-modal__baslik h2 {
    margin: 0;
    font-size: 20px;
}

.kvkk-modal__kapat {
    width: 34px;
    height: 34px;
    padding: 0;
    border: 1px solid rgba(255, 255, 255, 0.7);
    border-radius: 50%;
    background: transparent;
    color: #fff;
    font-size: 24px;
    line-height: 1;
    cursor: pointer;
}

.kvkk-modal__icerik {
    padding: 20px;
    font-size: 14px;
    line-height: 1.6;
}

.kvkk-modal__icerik p {
    margin: 0 0 14px;
}

.kvkk-modal__icerik p:last-child {
    margin-bottom: 0;
}

.kvkk-modal__alt {
    padding: 0 20px 20px;
}

.kvkk-modal__onay {
    margin-top: 0;
}

.btn-gonder {
    display: inline-block;
    width: 100%;
    background: #d4ad5c;
    color: #28356e;
    border: none;
    padding: 15px;
    font-size: 17px;
    font-weight: 600;
    border-radius: 6px;
    cursor: pointer;
    margin-top: 10px;
}

.btn-gonder:hover {
    background: #bd9440;
}

.guven-notu {
    display: flex;
    align-items: center;
    gap: 10px;
    background: #f0f2f5;
    border-radius: 8px;
    padding: 12px 16px;
    margin-top: 20px;
    font-size: 13px;
    color: #555;
}

.tesekkur {
    text-align: center;
}

.tesekkur h1 {
    color: #1e88e5;
    margin-top: 0;
}

.tesekkur .btn-gonder {
    width: auto;
    text-decoration: none;
    padding-left: 28px;
    padding-right: 28px;
}

@media (max-width: 480px) {
    .banner__top {
        gap: 8px;
    }

    .banner__logo {
        height: 48px;
    }

    .banner__geri {
        font-size: 12px;
        padding: 7px 9px;
    }

    .banner__baslik {
        font-size: 16px;
        line-height: 1.2;
    }

    .banner__aciklama {
        font-size: 11px;
        line-height: 1.3;
    }

    .kart__gövde {
        padding: 20px 16px 24px;
    }
}