.login-shell { max-width: 380px; margin: 60px auto 0; background: var(--card-bg); border: 1px solid var(--border-subtle); border-radius: 20px; padding: 40px; box-shadow: var(--shadow-card); }
.login-back-link { display: inline-block; margin-bottom: 16px; font-size: 13px; color: var(--text-secondary); text-decoration: none; }
.login-back-link:hover { color: var(--accent); }
.login-shell h1 { margin: 0 0 24px; font-size: 24px; text-align: center; background: linear-gradient(120deg, var(--accent), var(--accent-secondary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.login-error { margin-bottom: 16px; padding: 12px; border-radius: 8px; background: var(--error-soft); border: 1px solid var(--error-soft-strong); color: var(--error-text); font-size: 14px; }