.container-fluid {
    padding-left: 0;
    padding-right: 0;
}

.auth-shell {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background:
        radial-gradient(circle at 20% 20%, rgba(59, 130, 246, 0.18), transparent 45%),
        radial-gradient(circle at 80% 80%, rgba(14, 165, 233, 0.14), transparent 50%),
        #091226;
    padding: 1.25rem;
}

.auth-card,
.app-card {
    width: 100%;
    max-width: 420px;
    border-radius: 18px;
    padding: 2rem 1.75rem;
    background: rgba(15, 23, 42, 0.75);
    border: 1px solid rgba(255, 255, 255, 0.12);
    backdrop-filter: blur(8px);
    color: #e2e8f0;
    box-shadow: 0 18px 50px rgba(0, 0, 0, 0.45);
}

.auth-title,
.app-title {
    margin: 0;
    text-align: center;
    color: #f8fafc;
    font-weight: 700;
    font-size: 2rem;
}

.auth-card .form-group,
.app-card .form-group {
    max-width: 300px;
    margin: 0 auto 0.9rem auto;
}

.auth-card .form-control,
.app-card .form-control {
    background: rgba(15, 23, 42, 0.45);
    border: 1px solid rgba(148, 163, 184, 0.35);
    color: #f8fafc;
    height: 48px;
}

.auth-card .form-control::placeholder,
.app-card .form-control::placeholder {
    color: #94a3b8;
}

.auth-card .form-control:focus,
.app-card .form-control:focus {
    border-color: #60a5fa;
    box-shadow: 0 0 0 0.15rem rgba(96, 165, 250, 0.2);
}

.primary-btn {
    width: min(300px, 100%);
    display: block;
    margin: 0.4rem auto 1rem auto;
    background: #1d4ed8;
    border: 0;
    height: 44px;
}

.auth-note {
    margin: 0.8rem 0 0 0;
    text-align: center;
    color: #94a3b8;
    font-size: 0.9rem;
}

.app-header {
    max-width: 300px;
    margin: 0 auto 1rem auto;
}

.app-shell {
    position: relative;
}

.app-topbar {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 20;
}

.logout-btn {
    width: auto;
    min-width: 110px;
    margin: 0;
    display: block;
}

.result-text {
    text-align: center;
    margin: 0.5rem 0 0 0;
    color: #cbd5e1;
    font-size: 1.1rem;
}

@media (max-width: 600px) {
    .app-topbar {
        top: 0.75rem;
        right: 0.75rem;
    }
}