/* Trang đăng nhập / đăng ký / quên mật khẩu — thẻ ở giữa màn hình kiểu Google */
.auth-body { min-height: 100vh; display: flex; flex-direction: column; }
.auth-top { display: flex; align-items: center; justify-content: space-between; height: var(--topbar-h); padding: 0 var(--sp-4); }
.auth-main { flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center; padding: var(--sp-6) var(--sp-4) var(--sp-10); }
.auth-card { width: 100%; max-width: 440px; padding: var(--sp-8); }
.auth-title { font-size: var(--fs-2xl); margin-bottom: var(--sp-1); }
.auth-form > .muted { margin-bottom: var(--sp-6); }
.auth-form .alert { margin-bottom: var(--sp-4); }
.auth-tabs { margin: calc(var(--sp-8) * -1) calc(var(--sp-8) * -1) var(--sp-6); padding: 0 var(--sp-8); }
.auth-tabs .tab { flex: 1; padding: var(--sp-4) 0; }
.auth-center { text-align: center; }
.auth-pass { position: relative; }
.auth-pass .input { padding-right: 44px; }
.auth-eye { position: absolute; right: 4px; top: 4px; width: 32px; height: 32px; border: 0; background: none; border-radius: 50%; }
.auth-eye:hover { background: var(--surface-hover); }
.auth-captcha { display: flex; gap: var(--sp-2); }
.auth-captcha .input { flex: 1; text-transform: none; letter-spacing: 2px; }
.auth-captcha-img {
    width: 128px; height: 40px; flex-shrink: 0; padding: 0; border: 1px solid var(--border-strong);
    border-radius: var(--r-sm); background: var(--surface-2); color: var(--text); display: grid; place-items: center;
}
.auth-captcha-img svg { width: 120px; height: 38px; }
.auth-switch { text-align: center; margin-top: var(--sp-4); }
.auth-foot { margin-top: var(--sp-6); font-size: var(--fs-sm); text-align: center; }
.auth-foot a:hover { color: var(--text); }
.otp-row { display: flex; gap: var(--sp-2); justify-content: space-between; }
.otp-row .input { width: 48px; height: 52px; padding: 0; text-align: center; font-size: var(--fs-xl); font-weight: 700; }
.auth-steps { display: flex; gap: 6px; margin-bottom: var(--sp-6); }
.auth-steps span { flex: 1; height: 4px; border-radius: 2px; background: var(--surface-hover); }
.auth-steps span.is-done { background: var(--text); }
@media (max-width: 480px) { .auth-card { padding: var(--sp-6) var(--sp-4); } .auth-tabs { margin: calc(var(--sp-6) * -1) calc(var(--sp-4) * -1) var(--sp-6); padding: 0 var(--sp-4); } .otp-row .input { width: 42px; } }

/* Nút Google + vạch "hoặc" */
.auth-google { display: flex; align-items: center; justify-content: center; gap: var(--sp-2); margin-top: var(--sp-4); }
.auth-or { display: flex; align-items: center; gap: var(--sp-3); margin: var(--sp-4) 0 var(--sp-2); color: var(--text-2); font-size: var(--fs-sm); }
.auth-or::before, .auth-or::after { content: ""; flex: 1; border-top: 1px solid var(--border); }