#backend .studio-login-content { max-width: 800px; min-height: calc(100dvh - 64px); margin: 0 auto; padding: 0 18px 58px; }
#backend:has(#studioGate:not([hidden])) .page-nav > span,
#backend:has(#studioGate:not([hidden])) .page-nav button[data-view="learning"] { display: none; }
#backend .studio-lock-stage { position: relative; display: grid; place-items: center; height: min(60dvh, 520px); min-height: 420px; margin: 0 -18px -78px; overflow: hidden; background: #080b20; }
#backend .studio-lock-stage img { display: block; width: 100%; height: 100%; object-fit: cover; object-position: center top; }
#backend .studio-lock-stage::after { content: ''; position: absolute; inset: auto 0 0; height: 45%; background: linear-gradient(180deg, transparent, #080b20ec 73%, #080b20); pointer-events: none; }
#backend .studio-login-card { position: relative; z-index: 1; width: 100%; padding: 25px 26px 27px; border: 1px solid #9693d24d; border-radius: 22px; background: radial-gradient(circle at 50% 0, #25245485, transparent 70%), #11152e; box-shadow: 0 24px 55px #0008, inset 0 1px 0 #ffffff14; }
#backend .studio-login-eyebrow { display: block; color: #b7b6ee; font-size: 10px; font-weight: 700; letter-spacing: .18em; }
#backend .studio-login-card h1 { margin: 9px 0 20px; color: #fff; font-size: clamp(24px, 4vw, 29px); line-height: 1.35; font-weight: 760; }
#backend .studio-password-box { display: flex; align-items: center; gap: 8px; min-height: 53px; margin-bottom: 13px; padding: 4px 6px 4px 16px; border: 1px solid #ffffff24; border-radius: 999px; background: #ffffff0c; }
#backend .studio-password-box:focus-within { border-color: #9d9dff; box-shadow: 0 0 0 2px #7777ef28; }
#backend .studio-password-box input { flex: 1; width: 100%; min-width: 0; height: 42px; margin: 0; padding: 0; border: 0; outline: none; background: transparent; color: #fff; font-size: 15px; }
#backend .studio-password-box input::placeholder { color: #b3b5ce; }
#backend .studio-password-box button { flex: 0 0 55px; height: 36px; padding: 0; border: 0; border-radius: 999px; background: #ffffff15; color: #d6d5e9; font-size: 12px; cursor: pointer; }
#backend .studio-password-box button:focus-visible { outline: 2px solid #acd5ff; outline-offset: 2px; }
#backend .studio-login-card > .btn { min-height: 50px; border-radius: 999px; font-size: 15px; }
#backend .studio-login-error { margin: 11px 0 0; color: #ff9bb9; font-size: 13px; line-height: 1.55; text-align: center; }
#backend .studio-login-error:empty { display: none; }
@media (max-width: 650px) {
  #backend .studio-login-content { padding: 0 16px 48px; }
  #backend .studio-lock-stage { height: min(58dvh, 490px); min-height: 390px; margin: 0 -16px -80px; }
  #backend .studio-login-card { padding: 23px 20px 25px; }
  #backend .studio-login-card h1 { font-size: 24px; }
}