/* Ortak giriş sayfası (yönetici ve öğrenci) */

:root {
    --g-ana: #3d72fc;
    --g-ana-koyu: #2a5be0;
    --g-lacivert: #091851;
    --g-metin: #1b2336;
    --g-soluk: #6b7280;
    --g-cizgi: #e5e7eb;
    --g-zemin: #f5f7fb;
    --g-hata: #dc3545;
}

* {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    min-height: 100%;
    font-family: 'Poppins', system-ui, -apple-system, 'Segoe UI', sans-serif;
    color: var(--g-metin);
    background: var(--g-zemin);
}

a {
    color: var(--g-ana);
    text-decoration: none;
}

.giris {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    min-height: 100vh;
}

/* ---------- Sol: görsel ve tanıtım ---------- */
.giris-gorsel {
    position: relative;
    background-size: cover;
    background-position: center;
    color: #fff;
}

    .giris-gorsel::before {
        content: "";
        position: absolute;
        inset: 0;
        background: linear-gradient(150deg, rgba(9, 24, 81, .93) 0%, rgba(9, 24, 81, .78) 45%, rgba(61, 114, 252, .65) 100%);
    }

.giris-gorsel-ic {
    position: relative;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 48px 56px;
}

.giris-logo img {
    max-height: 56px;
    max-width: 220px;
}

.giris-tanitim h1 {
    font-size: 40px;
    line-height: 1.2;
    font-weight: 700;
    margin: 0 0 14px;
}

.giris-tanitim p {
    font-size: 17px;
    opacity: .88;
    margin: 0 0 30px;
    max-width: 460px;
}

.giris-tanitim ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    gap: 14px;
}

.giris-tanitim li {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 15px;
}

    .giris-tanitim li i {
        width: 38px;
        height: 38px;
        border-radius: 10px;
        background: rgba(255, 255, 255, .14);
        display: inline-flex;
        align-items: center;
        justify-content: center;
        font-size: 19px;
        flex-shrink: 0;
    }

.giris-telif {
    opacity: .65;
    font-size: 13px;
}

/* ---------- Sağ: form ---------- */
.giris-form-alan {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 24px;
    background: #fff;
}

.giris-kart {
    width: 100%;
    max-width: 420px;
}

.giris-logo-mobil {
    display: none;
}

.giris-baslik h2 {
    font-size: 30px;
    font-weight: 700;
    margin: 0 0 8px;
}

.giris-baslik p {
    color: var(--g-soluk);
    margin: 0 0 32px;
    font-size: 15px;
}

.giris-alan {
    margin-bottom: 20px;
}

    .giris-alan label {
        display: block;
        font-size: 14px;
        font-weight: 500;
        margin-bottom: 8px;
    }

.giris-input {
    position: relative;
    display: flex;
    align-items: center;
}

    .giris-input > i {
        position: absolute;
        left: 16px;
        color: var(--g-soluk);
        font-size: 19px;
        pointer-events: none;
    }

    .giris-input input {
        width: 100%;
        height: 54px;
        border: 1.5px solid var(--g-cizgi);
        border-radius: 12px;
        padding: 0 48px 0 48px;
        font: inherit;
        font-size: 15px;
        color: var(--g-metin);
        background: var(--g-zemin);
        transition: border-color .2s, box-shadow .2s, background .2s;
    }

        .giris-input input:focus {
            outline: none;
            border-color: var(--g-ana);
            background: #fff;
            box-shadow: 0 0 0 4px rgba(61, 114, 252, .14);
        }

        .giris-input input.input-validation-error {
            border-color: var(--g-hata);
        }

.sifre-goster {
    position: absolute;
    right: 8px;
    width: 38px;
    height: 38px;
    border: none;
    background: transparent;
    color: var(--g-soluk);
    font-size: 19px;
    cursor: pointer;
    border-radius: 8px;
}

    .sifre-goster:hover {
        background: var(--g-cizgi);
        color: var(--g-metin);
    }

.giris-alan-hata {
    display: block;
    color: var(--g-hata);
    font-size: 13px;
    margin-top: 6px;
}

.giris-hata {
    background: #fdecec;
    border: 1px solid #f5c2c7;
    color: #b02a37;
    border-radius: 12px;
    padding: 12px 16px;
    font-size: 14px;
    margin-bottom: 20px;
}

    .giris-hata ul {
        margin: 0;
        padding-left: 18px;
    }

    .giris-hata.validation-summary-valid {
        display: none;
    }

.giris-secenek {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 4px 0 26px;
    font-size: 14px;
}

.giris-onay {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    user-select: none;
}

    .giris-onay input {
        width: 18px;
        height: 18px;
        accent-color: var(--g-ana);
        cursor: pointer;
    }

.giris-buton {
    width: 100%;
    height: 54px;
    border: none;
    border-radius: 12px;
    background: var(--g-ana);
    color: #fff;
    font: inherit;
    font-size: 16px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    cursor: pointer;
    box-shadow: 0 10px 24px rgba(61, 114, 252, .3);
    transition: background .2s, transform .1s;
}

    .giris-buton:hover {
        background: var(--g-ana-koyu);
    }

    .giris-buton:active {
        transform: translateY(1px);
    }

    .giris-buton.yukleniyor {
        opacity: .7;
        cursor: wait;
    }

.giris-ayrac {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--g-soluk);
    font-size: 13px;
    margin: 24px 0;
}

    .giris-ayrac::before,
    .giris-ayrac::after {
        content: "";
        flex: 1;
        height: 1px;
        background: var(--g-cizgi);
    }

.giris-sosyal {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    height: 52px;
    border: 1.5px solid var(--g-cizgi);
    border-radius: 12px;
    color: var(--g-metin);
    font-weight: 500;
}

.giris-alt {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 10px;
    margin-top: 32px;
    padding-top: 22px;
    border-top: 1px solid var(--g-cizgi);
    font-size: 14px;
}

    .giris-alt a {
        color: var(--g-soluk);
        display: inline-flex;
        align-items: center;
        gap: 6px;
    }

        .giris-alt a:hover {
            color: var(--g-ana);
        }

/* ---------- Tablet ---------- */
@media (max-width: 1100px) {
    .giris-gorsel-ic {
        padding: 40px;
    }

    .giris-tanitim h1 {
        font-size: 32px;
    }
}

/* ---------- Mobil: görsel üstte ince bant, form tam ekran ---------- */
@media (max-width: 860px) {
    .giris {
        grid-template-columns: 1fr;
        grid-template-rows: auto 1fr;
    }

    .giris-gorsel-ic {
        padding: 28px 24px 34px;
        justify-content: flex-start;
        gap: 18px;
    }

    .giris-tanitim h1 {
        font-size: 24px;
        margin-bottom: 6px;
    }

    .giris-tanitim p {
        font-size: 14px;
        margin: 0;
    }

    .giris-tanitim ul,
    .giris-telif {
        display: none;
    }

    .giris-logo img {
        max-height: 44px;
    }

    .giris-form-alan {
        align-items: flex-start;
        padding: 0 20px 40px;
        background: transparent;
    }

    .giris-kart {
        background: #fff;
        border-radius: 20px;
        padding: 28px 22px;
        margin-top: -18px;
        box-shadow: 0 12px 34px rgba(9, 24, 81, .1);
    }

    .giris-baslik h2 {
        font-size: 24px;
    }

    .giris-baslik p {
        margin-bottom: 24px;
    }
}

/* Giriş ↔ kayıt geçiş bağlantısı */
.giris-kayit {
    text-align: center;
    margin: 22px 0 0;
    font-size: 14px;
    color: var(--g-soluk);
}

    .giris-kayit a {
        font-weight: 600;
    }

/* Kayıt formunda yan yana alanlar (ad / soyad, şifre / tekrar) */
.giris-satir {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0 14px;
}

.giris-input input.input-sade {
    padding-left: 16px;
}

.giris-onay a {
    font-weight: 500;
}

@media (max-width: 480px) {
    .giris-satir {
        grid-template-columns: 1fr;
    }
}