.login-shell {
    width: min(100%, 1040px);
    min-height: calc(100vh - 156px);
    margin: 0 auto;
    padding: 3.25rem 1rem;
    display: grid;
    grid-template-columns: minmax(0, 1.06fr) minmax(360px, .94fr);
    align-items: stretch;
}

/* Panel, logonun zeminiyle aynı laciverttir: logo görseli kutu gibi değil panelin parçası gibi durur.
   Turuncu ışıltı logodan uzakta, sağ alt köşededir (logonun arkasındaki zemin düz kalmalıdır). */
.login-intro {
    color: #fff;
    background: radial-gradient(circle at 100% 100%, rgba(255, 138, 61, .24) 0, rgba(255, 138, 61, 0) 46%), var(--sb-navy);
    border-radius: 22px 0 0 22px;
    padding: 3.2rem;
    display: flex;
    flex-direction: column;
    box-shadow: 0 18px 48px rgba(14, 24, 40, .16);
}

.login-brand { color: inherit; display: inline-flex; align-items: center; gap: .65rem; font-weight: 700; text-decoration: none; }
.login-brand:hover { color: inherit; }
.login-brand-mark { display: block; width: 2.25rem; height: 2.25rem; object-fit: cover; border: 1px solid rgba(255,255,255,.48); border-radius: .7rem; }
.login-intro-copy { margin: auto 0 2.5rem; }
.login-eyebrow { margin: 0 0 .7rem; color: var(--sb-orange-ink); font-size: .72rem; font-weight: 800; letter-spacing: .12em; }
.login-intro .login-eyebrow { color: var(--sb-orange); }
.login-intro h1 { margin: 0 0 1rem; max-width: 420px; color: #fff; font-size: clamp(2rem, 4vw, 2.75rem); line-height: 1.13; }
.login-intro-copy > p:last-child { margin: 0; max-width: 390px; color: rgba(255,255,255,.76); line-height: 1.65; }
.login-benefits { margin: 0; padding: 1.25rem 0 0; list-style: none; border-top: 1px solid rgba(255,255,255,.22); }
.login-benefits li { position: relative; padding: .34rem 0 .34rem 1.55rem; color: rgba(255,255,255,.88); font-size: .91rem; }
.login-benefits li::before { content: "✓"; position: absolute; left: 0; color: var(--sb-orange); font-weight: 800; }

.login-form-panel { padding: 3.25rem; background: #fff; border: 1px solid #eaecf0; border-left: 0; border-radius: 0 22px 22px 0; box-shadow: 0 18px 48px rgba(14, 24, 40, .09); }
.login-form-heading { margin-bottom: 2rem; }
.login-form-heading h2 { margin: 0 0 .6rem; color: #0e1828; font-size: 1.72rem; font-weight: 750; }
.login-form-heading > p:last-child { margin: 0; color: #727983; line-height: 1.55; }
.login-form { display: grid; gap: 1.15rem; }
.login-field { display: grid; gap: .45rem; }
.login-field label { color: #383f4b; font-size: .9rem; font-weight: 700; }
.login-field input { width: 100%; min-height: 2.85rem; padding: .68rem .82rem; border: 1px solid #d7dadf; border-radius: .65rem; background: #fff; color: #0e1828; outline: none; transition: border-color .15s, box-shadow .15s; }
.login-field input::placeholder { color: #a5aab1; }
.login-field input:focus { border-color: var(--sb-orange); box-shadow: 0 0 0 .2rem rgba(255, 138, 61, .22); }
.login-validation { margin: 0; color: #b42318; font-size: .82rem; }
.login-validation ul { margin: 0; padding-left: 1.1rem; }
.remember-choice { display: flex; align-items: flex-start; gap: .7rem; margin: .1rem 0; color: #474d57; cursor: pointer; }
.remember-choice input { width: 1.05rem; height: 1.05rem; margin-top: .18rem; accent-color: var(--sb-navy); }
.remember-choice strong, .remember-choice small { display: block; }
.remember-choice strong { font-size: .9rem; }
.remember-choice small { margin-top: .12rem; color: #7e848d; font-size: .78rem; }
/* Ana eylem logodaki simge gibidir: turuncu zemin üstünde lacivert yazı (beyaz yazı turuncuda okunmaz). */
.login-submit { display: flex; align-items: center; justify-content: center; gap: .65rem; min-height: 3rem; border: 0; border-radius: .65rem; background: var(--sb-orange); color: var(--sb-navy); font-weight: 800; transition: background .15s, transform .15s; }
.login-submit:hover, .login-submit:focus { background: var(--sb-orange-dark); color: var(--sb-navy); transform: translateY(-1px); }
.login-submit:focus-visible { outline: 3px solid var(--sb-navy); outline-offset: 2px; }
.login-submit span { font-size: 1.15rem; }
.login-security-note { margin: 1.45rem 0 0; color: #858a91; font-size: .78rem; line-height: 1.5; }
/* Eskimiş sekmeden gönderilen giriş reddedilince gösterilen bilgi. */
.login-notice { margin: 0 0 1rem; padding: .7rem .85rem; border: 1px solid #c7d6ee; border-radius: .65rem; background: #f1f6ff; color: #1d3a66; font-size: .86rem; line-height: 1.45; }
/* Erişim yok ve hata açıklama sayfaları (Denied, StatusNotice). */
.login-card { max-width: 34rem; margin: 3rem auto; padding: 2rem; border: 1px solid #e5e8ee; border-radius: 1rem; background: #fff; box-shadow: 0 12px 34px rgba(15, 26, 44, .07); }
.login-card .eyebrow { margin: 0 0 .5rem; color: var(--sb-orange-ink); font-size: .74rem; font-weight: 800; letter-spacing: .12em; }
.login-card h1 { margin: 0 0 .6rem; font-size: 1.5rem; }
.login-card p { color: #5d6470; }
.login-card .btn { margin-top: .8rem; }
.login-card .btn-primary { border-color: var(--sb-navy); background: var(--sb-navy); }
.login-card .btn-primary:hover, .login-card .btn-primary:focus { border-color: var(--sb-navy-2); background: var(--sb-navy-2); }
.login-key-warning { margin: 0 0 1rem; padding: .7rem .85rem; border: 1px solid #f5c26b; border-radius: .65rem; background: #fff8eb; color: #7a4b00; font-size: .82rem; line-height: 1.45; }
.app-nav-account { display: flex; align-items: center; gap: .75rem; margin-left: auto; padding-left: 1rem; }
.app-nav-account form { margin: 0; }
.app-nav-user { max-width: 190px; overflow: hidden; color: #666c76; font-size: .82rem; text-overflow: ellipsis; white-space: nowrap; }
.app-nav-logout { border: 1px solid #d9dde3; border-radius: .5rem; padding: .38rem .65rem; background: #fff; color: #545b67; font-size: .8rem; font-weight: 700; }
.app-nav-logout:hover { border-color: #b0bbcd; color: #14233a; }

@media (max-width: 767.98px) {
    .login-shell { min-height: auto; max-width: 550px; padding: 1.5rem 0; grid-template-columns: 1fr; }
    .login-intro { border-radius: 18px 18px 0 0; padding: 1.8rem; }
    .login-intro-copy { margin: 2.5rem 0 1.25rem; }
    .login-intro h1 { font-size: 1.8rem; }
    .login-benefits { display: none; }
    .login-form-panel { padding: 2rem 1.5rem; border: 1px solid #eaecf0; border-top: 0; border-radius: 0 0 18px 18px; }
}
/* Üst menünün dar ekran ve sığma kuralları site.css'tedir ("Üst menü"). */